/* * nsf.c -- * * Basic Machinery of the Next Scripting Framework, a Tcl based framework * for supporting language oriented programming. For Details, see * http://next-scripting.org/ * * Copyright (C) 1999-2012 Gustaf Neumann (a) (b) * Copyright (C) 1999-2007 Uwe Zdun (a) (b) * Copyright (C) 2007-2008 Martin Matuska (b) * Copyright (C) 2010-2012 Stefan Sobernig (b) * * * (a) University of Essen * Specification of Software Systems * Altendorferstrasse 97-101 * D-45143 Essen, Germany * * (b) Vienna University of Economics and Business * Institute of Information Systems and New Media * A-1090, Augasse 2-6 * Vienna, Austria * * This work is licensed under the MIT License * http://www.opensource.org/licenses/MIT * * Copyright: * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * * * This software is based upon MIT Object Tcl by David Wetherall and * Christopher J. Lindblad, that contains the following copyright * message: * * "Copyright 1993 Massachusetts Institute of Technology * * Permission to use, copy, modify, distribute, and sell this * software and its documentation for any purpose is hereby granted * without fee, provided that the above copyright notice appear in * all copies and that both that copyright notice and this * permission notice appear in supporting documentation, and that * the name of M.I.T. not be used in advertising or publicity * pertaining to distribution of the software without specific, * written prior permission. M.I.T. makes no representations about * the suitability of this software for any purpose. It is * provided "as is" without express or implied warranty." */ #define NSF_C 1 #include "nsfInt.h" #include "nsfAccessInt.h" #ifdef COMPILE_NSF_STUBS # if defined(PRE86) EXTERN NsfStubs nsfStubs; # else MODULE_SCOPE const NsfStubs * const nsfConstStubPtr; # endif #endif #ifdef USE_TCL_STUBS # define Nsf_ExprObjCmd(clientData, interp, objc, objv) \ NsfCallCommand(interp, NSF_EXPR, objc, objv) #else # define Nsf_ExprObjCmd(clientData, interp, objc, objv) \ Tcl_ExprObjCmd(clientData, interp, objc, objv) #endif /* * Call Stack specific definitions */ typedef enum { CALLING_LEVEL, ACTIVE_LEVEL } CallStackLevel; typedef struct callFrameContext { int frameSaved; Tcl_CallFrame *framePtr; Tcl_CallFrame *varFramePtr; } callFrameContext; typedef struct NsfProcContext { ClientData oldDeleteData; Tcl_CmdDeleteProc *oldDeleteProc; NsfParamDefs *paramDefs; } NsfProcContext; /* * TclCmdClientdata is an incomplete type containing the common * field(s) of ForwardCmdClientData, AliasCmdClientData and * SetterCmdClientData used for filling in at runtime the actual * object. */ typedef struct TclCmdClientData { NsfObject *object; } TclCmdClientData; typedef struct SetterCmdClientData { NsfObject *object; Nsf_Param *paramsPtr; } SetterCmdClientData; typedef struct ForwardCmdClientData { NsfObject *object; Tcl_Obj *cmdName; Tcl_ObjCmdProc *objProc; ClientData clientData; int passthrough; int needobjmap; int verbose; int hasNonposArgs; int nr_args; Tcl_Obj *args; int objframe; Tcl_Obj *onerror; Tcl_Obj *prefix; int nr_subcommands; Tcl_Obj *subcommands; } ForwardCmdClientData; typedef struct AliasCmdClientData { NsfObject *object; Tcl_Obj *cmdName; Tcl_ObjCmdProc *objProc; ClientData clientData; NsfClass *class; Tcl_Interp *interp; Tcl_Command aliasedCmd; Tcl_Command aliasCmd; } AliasCmdClientData; /* * When NSF_MEM_COUNT is set, we want to trace as well the mem-count frees * associated with the interp. Therefore, we need in this case a special * client data structure. */ #ifdef NSF_MEM_COUNT typedef struct NsfNamespaceClientData { NsfObject *object; Tcl_Namespace *nsPtr; Tcl_Interp *interp; } NsfNamespaceClientData; #endif /* * Argv parsing specific definitions */ #define PARSE_CONTEXT_PREALLOC 20 typedef struct { ClientData *clientData; int status; Tcl_Obj **objv; Tcl_Obj **full_objv; int *flags; ClientData clientData_static[PARSE_CONTEXT_PREALLOC]; Tcl_Obj *objv_static[PARSE_CONTEXT_PREALLOC+1]; int flags_static[PARSE_CONTEXT_PREALLOC+1]; int lastObjc; int objc; int varArgs; NsfObject *object; } ParseContext; static Nsf_TypeConverter ConvertToNothing, ConvertViaCmd, ConvertToObjpattern; typedef struct { Nsf_TypeConverter *converter; char *domain; } enumeratorConverterEntry; /* * Tcl_Obj Types for Next Scripting Objects */ static Tcl_ObjType CONST86 *Nsf_OT_byteCodeType = NULL, *Nsf_OT_tclCmdNameType = NULL, *Nsf_OT_listType = NULL, *Nsf_OT_doubleType = NULL, *Nsf_OT_intType = NULL, *Nsf_OT_parsedVarNameType = NULL; /* * Function prototypes */ /* Prototypes for method definitions */ static Tcl_ObjCmdProc NsfForwardMethod; static Tcl_ObjCmdProc NsfObjscopedMethod; static Tcl_ObjCmdProc NsfSetterMethod; static Tcl_ObjCmdProc NsfProcAliasMethod; static Tcl_ObjCmdProc NsfAsmProc; /* prototypes for methods called directly when CallDirectly() returns NULL */ static int NsfCAllocMethod(Tcl_Interp *interp, NsfClass *cl, Tcl_Obj *nameObj); static int NsfCCreateMethod(Tcl_Interp *interp, NsfClass *cl, CONST char *name, int objc, Tcl_Obj *CONST objv[]); static int NsfOCleanupMethod(Tcl_Interp *interp, NsfObject *object); static int NsfOConfigureMethod(Tcl_Interp *interp, NsfObject *object, int objc, Tcl_Obj *CONST objv[]); static int NsfODestroyMethod(Tcl_Interp *interp, NsfObject *object); static int MethodDispatch(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], Tcl_Command cmd, NsfObject *object, NsfClass *cl, CONST char *methodName, int frameType, int flags); static int DispatchDefaultMethod(Tcl_Interp *interp, NsfObject *object, Tcl_Obj *obj, int flags); static int DispatchDestroyMethod(Tcl_Interp *interp, NsfObject *object, int flags); static int DispatchUnknownMethod(Tcl_Interp *interp, NsfObject *object, int objc, Tcl_Obj *CONST objv[], Tcl_Obj *callInfo, Tcl_Obj *methodObj, int flags); NSF_INLINE static int ObjectDispatch(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], int flags); NSF_INLINE static int ObjectDispatchFinalize(Tcl_Interp *interp, NsfCallStackContent *cscPtr, int result /*, char *string , CONST char *methodName*/); /* prototypes for object life-cycle management */ static int RecreateObject(Tcl_Interp *interp, NsfClass *cl, NsfObject *object, int objc, Tcl_Obj *CONST objv[]); static void FinalObjectDeletion(Tcl_Interp *interp, NsfObject *object); #if defined(DO_CLEANUP) static void FreeAllNsfObjectsAndClasses(Tcl_Interp *interp, NsfCmdList **instances); #endif static void CallStackDestroyObject(Tcl_Interp *interp, NsfObject *object); static void PrimitiveCDestroy(ClientData clientData); static void PrimitiveODestroy(ClientData clientData); static void PrimitiveDestroy(ClientData clientData); static void NsfCleanupObject_(NsfObject *object); /* prototypes for object and command lookup */ static NsfObject *GetObjectFromString(Tcl_Interp *interp, CONST char *name); static NsfClass *GetClassFromString(Tcl_Interp *interp, CONST char *name); static int GetClassFromObj(Tcl_Interp *interp, register Tcl_Obj *objPtr, NsfClass **clPtr, int withUnknown); /*static NsfObject *GetHiddenObjectFromCmd(Tcl_Interp *interp, Tcl_Command cmdPtr); static int ReverseLookupCmdFromCmdTable(Tcl_Interp *interp, Tcl_Command searchCmdPtr, Tcl_HashTable *cmdTablePtr);*/ static void GetAllInstances(Tcl_Interp *interp, NsfCmdList **instances, NsfClass *startClass); NSF_INLINE static Tcl_Command FindMethod(Tcl_Namespace *nsPtr, CONST char *methodName); /* prototypes for namespace specific calls */ static Tcl_Obj *NameInNamespaceObj(Tcl_Interp *interp, CONST char *name, Tcl_Namespace *ns); static Tcl_Namespace *CallingNameSpace(Tcl_Interp *interp); NSF_INLINE static Tcl_Command NSFindCommand(Tcl_Interp *interp, CONST char *name); static Tcl_Namespace *NSGetFreshNamespace(Tcl_Interp *interp, NsfObject *object, CONST char *name); static Tcl_Namespace *RequireObjNamespace(Tcl_Interp *interp, NsfObject *object); static int NSDeleteCmd(Tcl_Interp *interp, Tcl_Namespace *nsPtr, CONST char *methodName); static void NSNamespaceDeleteProc(ClientData clientData); static void NSNamespacePreserve(Tcl_Namespace *nsPtr); static void NSNamespaceRelease(Tcl_Namespace *nsPtr); /* prototypes for filters and mixins */ static void FilterComputeDefined(Tcl_Interp *interp, NsfObject *object); static void MixinComputeDefined(Tcl_Interp *interp, NsfObject *object); NSF_INLINE static void GuardAdd(NsfCmdList *filterCL, Tcl_Obj *guardObj); static int GuardCall(NsfObject *object, Tcl_Interp *interp, Tcl_Obj *guardObj, NsfCallStackContent *cscPtr); static void GuardDel(NsfCmdList *filterCL); /* prototypes for forwarders */ static void ForwardCmdDeleteProc(ClientData clientData); static int ForwardProcessOptions(Tcl_Interp *interp, Tcl_Obj *nameObj, Tcl_Obj *withDefault, int withEarlybinding, Tcl_Obj *withMethodprefix, int withObjframe, Tcl_Obj *withOnerror, int withVerbose, Tcl_Obj *target, int objc, Tcl_Obj * CONST objv[], ForwardCmdClientData **tcdPtr); /* properties of objects and classes */ static int IsBaseClass(NsfObject *cl); static int IsMetaClass(Tcl_Interp *interp, NsfClass *cl, int withMixins); static int IsSubType(NsfClass *subcl, NsfClass *cl); static NsfClass *DefaultSuperClass(Tcl_Interp *interp, NsfClass *cl, NsfClass *mcl, int isMeta); /* prototypes for call stack specific calls */ NSF_INLINE static void CscInit_(NsfCallStackContent *cscPtr, NsfObject *object, NsfClass *cl, Tcl_Command cmd, int frameType, int flags); NSF_INLINE static void CscFinish_(Tcl_Interp *interp, NsfCallStackContent *cscPtr); NSF_INLINE static void CallStackDoDestroy(Tcl_Interp *interp, NsfObject *object); /* prototypes for parameter and argument management */ static int NsfParameterInvalidateClassCacheCmd(Tcl_Interp *interp, NsfClass *cl); static int ProcessMethodArguments(ParseContext *pcPtr, Tcl_Interp *interp, NsfObject *object, int processFlags, NsfParamDefs *paramDefs, Tcl_Obj *methodNameObj, int objc, Tcl_Obj *CONST objv[]); static int ParameterCheck(Tcl_Interp *interp, Tcl_Obj *paramObjPtr, Tcl_Obj *valueObj, const char *argNamePrefix, int doCheckArguments, int isNamed, int doConfigureParameter, Nsf_Param **paramPtrPtr); static void ParamDefsRefCountIncr(NsfParamDefs *paramDefs); static void ParamDefsRefCountDecr(NsfParamDefs *paramDefs); static int ParamSetFromAny(Tcl_Interp *interp, register Tcl_Obj *objPtr); static int ArgumentParse(Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], NsfObject *obj, Tcl_Obj *procName, Nsf_Param CONST *paramPtr, int nrParameters, int serial, int processFlags, ParseContext *pc); static int ArgumentCheck(Tcl_Interp *interp, Tcl_Obj *objPtr, struct Nsf_Param CONST *pPtr, int doCheckArguments, int *flags, ClientData *clientData, Tcl_Obj **outObjPtr); static int GetMatchObject(Tcl_Interp *interp, Tcl_Obj *patternObj, Tcl_Obj *origObj, NsfObject **matchObject, CONST char **pattern); static void NsfProcDeleteProc(ClientData clientData); static int NsfParameterInvalidateObjectCacheCmd(Tcl_Interp *interp, NsfObject *object); /* prototypes for alias management */ static int AliasDelete(Tcl_Interp *interp, Tcl_Obj *cmdName, CONST char *methodName, int withPer_object); static Tcl_Obj *AliasGet(Tcl_Interp *interp, Tcl_Obj *cmdName, CONST char *methodName, int withPer_object, int leaveError); static int AliasDeleteObjectReference(Tcl_Interp *interp, Tcl_Command cmd); static int NsfMethodAliasCmd(Tcl_Interp *interp, NsfObject *object, int withPer_object, CONST char *methodName, int withFrame, Tcl_Obj *cmdName); static int AliasRefetch(Tcl_Interp *interp, NsfObject *object, CONST char *methodName, AliasCmdClientData *tcd); NSF_INLINE static Tcl_Command AliasDereference(Tcl_Interp *interp, NsfObject *object, CONST char *methodName, Tcl_Command cmd); /* prototypes for (class) list handling */ static NsfClasses ** NsfClassListAdd(NsfClasses **firstPtrPtr, NsfClass *cl, ClientData clientData); static void NsfClassListFree(NsfClasses *firstPtr); /* misc prototypes */ static int SetInstVar(Tcl_Interp *interp, NsfObject *object, Tcl_Obj *nameObj, Tcl_Obj *valueObj); static int ListDefinedMethods(Tcl_Interp *interp, NsfObject *object, CONST char *pattern, int withPer_object, int methodType, int withCallproctection, int withPath); static int NextSearchAndInvoke(Tcl_Interp *interp, CONST char *methodName, int objc, Tcl_Obj *CONST objv[], NsfCallStackContent *cscPtr, int freeArgumentVector); static void CmdListFree(NsfCmdList **cmdList, NsfFreeCmdListClientData *freeFct); static void NsfCommandPreserve(Tcl_Command cmd); static void NsfCommandRelease(Tcl_Command cmd); static Tcl_Command GetOriginalCommand(Tcl_Command cmd); EXTERN void NsfDStringArgv(Tcl_DString *dsPtr, int objc, Tcl_Obj *CONST objv[]); static int MethodSourceMatches(int withSource, NsfClass *cl, NsfObject *object); #ifdef DO_CLEANUP static void DeleteNsfProcs(Tcl_Interp *interp, Tcl_Namespace *nsPtr); #endif #if defined(NSF_WITH_ASSERTIONS) static void AssertionRemoveProc(NsfAssertionStore *aStore, CONST char *name); #endif #ifdef DO_FULL_CLEANUP static void DeleteProcsAndVars(Tcl_Interp *interp, Tcl_Namespace *nsPtr, int withKeepvars); #endif /* *---------------------------------------------------------------------- * * NsfErrorContext -- * * Print the current errorCode and errorInfo to stderr. * This should be used as the last ressort, when e.g. logging fails * * Results: * None. * * Side effects: * Output to stderr * *---------------------------------------------------------------------- */ static void NsfErrorContext(Tcl_Interp *interp, CONST char *context) { Tcl_DString ds, *dsPtr = &ds; Tcl_DStringInit(dsPtr); Tcl_DStringAppend(dsPtr, "puts stderr \"Error in ", -1); Tcl_DStringAppend(dsPtr, context, -1); Tcl_DStringAppend(dsPtr, ":\n$::errorCode $::errorInfo\"", -1); Tcl_EvalEx(interp, Tcl_DStringValue(dsPtr), Tcl_DStringLength(dsPtr), 0); Tcl_DStringFree(dsPtr); } /* *---------------------------------------------------------------------- * * NsfDStringEval -- * * Evaluate the provided Tcl_DString as a Tcl command and output * the error stack in case of a failure. * * Results: * Tcl result code. * * Side effects: * Output to stderr possible. * *---------------------------------------------------------------------- */ static int NsfDStringEval(Tcl_Interp *interp, Tcl_DString *dsPtr, CONST char *context) { int result = Tcl_EvalEx(interp, Tcl_DStringValue(dsPtr), Tcl_DStringLength(dsPtr), 0); if (result == TCL_ERROR) { NsfErrorContext(interp, context); } return result; } /* *---------------------------------------------------------------------- * * NsfLog -- * * Produce a formatted warning by calling an external function * ::nsf::log. It is defined static to allow for inlining. * * Results: * None. * * Side effects: * Output of the warning. * *---------------------------------------------------------------------- */ void NsfLog(Tcl_Interp *interp, int requiredLevel, CONST char *fmt, ...) { va_list ap; if (RUNTIME_STATE(interp)->debugLevel >= requiredLevel) { CONST char *level = requiredLevel == NSF_LOG_WARN ? "Warning" : "Notice"; Tcl_DString cmdString, ds; Tcl_DStringInit(&ds); va_start(ap, fmt); NsfDStringPrintf(&ds, fmt, ap); va_end(ap); Tcl_DStringInit(&cmdString); Tcl_DStringAppendElement(&cmdString, "::nsf::log"); Tcl_DStringAppendElement(&cmdString, level); Tcl_DStringAppendElement(&cmdString, Tcl_DStringValue(&ds)); NsfDStringEval(interp, &cmdString, "log command"); Tcl_DStringFree(&cmdString); Tcl_DStringFree(&ds); } } /* *---------------------------------------------------------------------- * * NsfDeprecatedCmd -- * * Provide a warning about a deprecated command or method. The * message is produced via calling the external Tcl function * ::nsf::deprecated. * * Results: * None. * * Side effects: * Output of the warning. * *---------------------------------------------------------------------- */ static void NsfDeprecatedCmd(Tcl_Interp *interp, CONST char *what, CONST char *oldCmd, CONST char *newCmd) { Tcl_DString ds, *dsPtr = &ds; assert(what); assert(oldCmd); Tcl_DStringInit(dsPtr); Tcl_DStringAppendElement(dsPtr, "::nsf::deprecated"); Tcl_DStringAppendElement(dsPtr, what); Tcl_DStringAppendElement(dsPtr, oldCmd); Tcl_DStringAppendElement(dsPtr, newCmd ? newCmd : ""); NsfDStringEval(interp, dsPtr, "log command"); Tcl_DStringFree(dsPtr); } /*********************************************************************** * argv parsing ***********************************************************************/ /* *---------------------------------------------------------------------- * * ParseContextInit -- * * Initialize a ParseContext with default values and allocate * memory if needed. Every ParseContext has to be initialized * before usage and has to be freed with ParseContextRelease(). * * Results: * None. * * Side effects: * Allocate potentially memory. * *---------------------------------------------------------------------- */ static void ParseContextInit(ParseContext *pcPtr, int objc, NsfObject *object, Tcl_Obj *procName) { if (likely(objc < PARSE_CONTEXT_PREALLOC)) { /* the single larger memset below .... */ memset(pcPtr, 0, sizeof(ParseContext)); /* ... is faster than the two smaller memsets below */ /* memset(pcPtr->clientData_static, 0, sizeof(ClientData)*(objc)); memset(pcPtr->objv_static, 0, sizeof(Tcl_Obj *)*(objc+1));*/ pcPtr->full_objv = &pcPtr->objv_static[0]; pcPtr->clientData = &pcPtr->clientData_static[0]; pcPtr->flags = &pcPtr->flags_static[0]; } else { pcPtr->full_objv = (Tcl_Obj **)ckalloc(sizeof(Tcl_Obj *)*(objc+1)); pcPtr->flags = (int *)ckalloc(sizeof(int)*(objc+1)); MEM_COUNT_ALLOC("pcPtr.objv", pcPtr->full_objv); pcPtr->clientData = (ClientData *)ckalloc(sizeof(ClientData)*objc); MEM_COUNT_ALLOC("pcPtr.clientData", pcPtr->clientData); /*fprintf(stderr, "ParseContextMalloc %d objc, %p %p\n", objc, pcPtr->full_objv, pcPtr->clientData);*/ memset(pcPtr->full_objv, 0, sizeof(Tcl_Obj *)*(objc+1)); memset(pcPtr->flags, 0, sizeof(int)*(objc+1)); memset(pcPtr->clientData, 0, sizeof(ClientData)*(objc)); pcPtr->status = NSF_PC_STATUS_FREE_OBJV|NSF_PC_STATUS_FREE_CD; pcPtr->varArgs = 0; } pcPtr->objv = &pcPtr->full_objv[1]; pcPtr->full_objv[0] = procName; pcPtr->object = object; } /* *---------------------------------------------------------------------- * * ParseContextExtendObjv -- * * Extend Tcl_Obj array at runtime, when more elements are * needed. This function is called to extend an already * initialized ParseContext. * * Results: * None. * * Side effects: * Allocate potentially memory. * *---------------------------------------------------------------------- */ static void ParseContextExtendObjv(ParseContext *pcPtr, int from, int elts, Tcl_Obj *CONST source[]) { int requiredSize = from + elts + 1; /*NsfPrintObjv("BEFORE: ", pcPtr->objc, pcPtr->full_objv);*/ if (unlikely(requiredSize >= PARSE_CONTEXT_PREALLOC)) { if (pcPtr->objv == &pcPtr->objv_static[1]) { /* realloc from preallocated memory */ pcPtr->full_objv = (Tcl_Obj **)ckalloc(sizeof(Tcl_Obj *) * requiredSize); pcPtr->flags = (int *) ckalloc(sizeof(int) * requiredSize); MEM_COUNT_ALLOC("pcPtr.objv", pcPtr->full_objv); memcpy(pcPtr->full_objv, &pcPtr->objv_static[0], sizeof(Tcl_Obj *) * PARSE_CONTEXT_PREALLOC); memcpy(pcPtr->flags, &pcPtr->flags_static[0], sizeof(int) * PARSE_CONTEXT_PREALLOC); /* fprintf(stderr, "ParseContextExtendObjv: extend %p alloc %d new objv=%p pcPtr %p\n", pcPtr, requiredSize, pcPtr->full_objv, pcPtr);*/ pcPtr->status |= NSF_PC_STATUS_FREE_OBJV; } else { /* realloc from mallocated memory */ pcPtr->full_objv = (Tcl_Obj **)ckrealloc((char *)pcPtr->full_objv, sizeof(Tcl_Obj *) * requiredSize); pcPtr->flags = (int *) ckrealloc((char *)pcPtr->flags, sizeof(int) * requiredSize); /*fprintf(stderr, "ParseContextExtendObjv: extend %p realloc %d new objv=%p pcPtr %p\n", pcPtr, requiredSize, pcPtr->full_objv, pcPtr);*/ } pcPtr->objv = &pcPtr->full_objv[1]; } memcpy(pcPtr->objv + from, source, sizeof(Tcl_Obj *) * elts); memset(pcPtr->flags + from, 0, sizeof(int) * elts); pcPtr->objc += elts; /*NsfPrintObjv("AFTER: ", pcPtr->objc, pcPtr->full_objv);*/ } /* *---------------------------------------------------------------------- * * ParseContextRelease -- * * Release (and potentially free) the content of a * ParseContext. This function is the counterpart of * ParseContextInit(), * * Results: * None. * * Side effects: * Free potentially memory. * *---------------------------------------------------------------------- */ static void ParseContextRelease(ParseContext *pcPtr) { int status = pcPtr->status; /*fprintf(stderr, "ParseContextRelease %p status %.6x %d elements\n", pcPtr, status, pcPtr->objc);*/ #if !defined(NDEBUG) { /* * Perform a general consistency check: although the contents of the parse * context are at release time sometimes only partially initialized, the * following holds true for ensuring correct release of Tcl_Objs: * * 1) if one of the objv-flags has NSF_PC_MUST_DECR set, * then the status flag NSF_PC_STATUS_MUST_DECR has to * be set as well. * * 2) if objc>0 then for all objv entries having a flag * different from 0 must have a * TCL_OBJ in the vector. * * 3) for preallocated objvs, all elements of the objv * after the argument vector must be 0 or * NSF_PC_IS_DEFAULT (sanity check) */ /* * (1) make sure, that the status correctly reflects MUST_DECR */ int i; if (status == 0 || (status & NSF_PC_STATUS_MUST_DECR) == 0) { for (i = 0; i < pcPtr->objc - 1; i++) { assert((pcPtr->flags[i] & NSF_PC_MUST_DECR) == 0); } } /* * (2) make sure, Tcl_Objs are set when needed for reclaiming memory */ if (pcPtr->objc > 0) { /*fprintf(stderr, "%s ", ObjStr(pcPtr->full_objv[0]));*/ for (i = 0; i < pcPtr->objc; i++) { if (pcPtr->flags[i]) { assert(pcPtr->objv[i]); /*fprintf(stderr, "[%d]%s %.6x ", i, ObjStr(pcPtr->objv[i]), pcPtr->flags[i]);*/ } } } /* * (3) All later flags must be empty or DEFAULT */ if (pcPtr->full_objv == &pcPtr->objv_static[0] && pcPtr->objc > 0) { for (i = pcPtr->objc; i < PARSE_CONTEXT_PREALLOC; i++) { assert(pcPtr->flags[i] == 0 || pcPtr->flags[i] == NSF_PC_IS_DEFAULT); } } } #endif if (unlikely(status)) { if (status & NSF_PC_STATUS_MUST_DECR) { int i; /*fprintf(stderr, "ParseContextRelease %p loop from 0 to %d\n", pcPtr, pcPtr->objc-1);*/ for (i = 0; i < pcPtr->objc; i++) { /*fprintf(stderr, "ParseContextRelease %p check [%d] obj %p flags %.6x & %p\n", pcPtr, i, pcPtr->objv[i], pcPtr->flags[i], &(pcPtr->flags[i]));*/ if (pcPtr->flags[i] & NSF_PC_MUST_DECR) { assert(pcPtr->objv[i]); assert(pcPtr->objv[i]->refCount > 0); /*fprintf(stderr, "... decr ref count on %p\n", pcPtr->objv[i]);*/ DECR_REF_COUNT2("valueObj", pcPtr->objv[i]); } } } /* * Objv can be separately extended; also flags are extend when this * happens. */ if (unlikely(status & NSF_PC_STATUS_FREE_OBJV)) { /*fprintf(stderr, "ParseContextRelease %p free %p %p\n", pcPtr, pcPtr->full_objv, pcPtr->clientData);*/ MEM_COUNT_FREE("pcPtr.objv", pcPtr->full_objv); ckfree((char *)pcPtr->full_objv); ckfree((char *)pcPtr->flags); } /* * If the parameter definition was extended at creation time also * clientData is extended. */ if (status & NSF_PC_STATUS_FREE_CD) { /*fprintf(stderr, "free client-data for %p\n", pcPtr);*/ MEM_COUNT_FREE("pcPtr.clientData", pcPtr->clientData); ckfree((char *)pcPtr->clientData); } } } /* * call an Next Scripting method */ static int CallMethod(ClientData clientData, Tcl_Interp *interp, Tcl_Obj *methodObj, int objc, Tcl_Obj *CONST objv[], int flags) { NsfObject *object = (NsfObject *) clientData; int result; ALLOC_ON_STACK(Tcl_Obj*, objc, tov); /*fprintf(stderr, "%%%% callmethod called with method %p\n", methodObj),*/ tov[0] = object->cmdName; tov[1] = methodObj; if (likely(objc>2)) { memcpy(tov+2, objv, sizeof(Tcl_Obj *)*(objc-2)); } /*fprintf(stderr, "%%%% CallMethod cmdName=%s, method=%s, objc=%d\n", ObjStr(tov[0]), ObjStr(tov[1]), objc); {int i; fprintf(stderr, "\t CALL: %s ", ObjStr(methodObj));for(i=0; i1); tov[0] = object->cmdName; tov[1] = methodObj; if (objc>2) { tov[2] = arg1; } if (objc>3) { memcpy(tov+3, objv, sizeof(Tcl_Obj *)*(objc-3)); } /*fprintf(stderr, "%%%% CallMethodWithArgs cmdName=%s, method=%s, arg1 %s objc=%d\n", ObjStr(tov[0]), ObjStr(tov[1]), objc>2 ? ObjStr(tov[2]) : "", objc);*/ result = ObjectDispatch(object, interp, objc, tov, flags); FREE_ON_STACK(Tcl_Obj*, tov); return result; } #include "nsfStack.c" /*********************************************************************** * Value added replacements of Tcl functions ***********************************************************************/ /* *---------------------------------------------------------------------- * Nsf_NextHashEntry -- * * Function very similar to Tcl_NextHashEntry. If during the iteration of * hash entries some of these entries are removed, Tcl_NextHashEntry() can * lead to a valid looking but invalid hPtr, when the next entry was * already deleted. This seem to occur only, when there are more than 12 * hash entries in the table (multiple buckets). Therefore, we use * numEntries to check, if it is sensible to return a an hash entry. We can * trigger refetch of the hSrchPtr, when the number of expected entries * differs from the numbers of the actual entries. * * Results: * Hash Entry or NULL. * * Side effects: * None. * *---------------------------------------------------------------------- */ static Tcl_HashEntry * Nsf_NextHashEntry(Tcl_HashTable *tablePtr, int expected, Tcl_HashSearch *hSrchPtr) { /*fprintf(stderr, "Nsf_NextHashEntry %p expected %d numEntries %d\n", tablePtr, expected, tablePtr->numEntries);*/ if (tablePtr->numEntries < 1) { return NULL; } else if (tablePtr->numEntries != expected) { return Tcl_FirstHashEntry(tablePtr, hSrchPtr); } else { return Tcl_NextHashEntry(hSrchPtr); } } /* *---------------------------------------------------------------------- * NsfCommandPreserve -- * * Increment Tcl's command refCount * * Results: * void * * Side effects: * None. * *---------------------------------------------------------------------- */ static void NsfCommandPreserve(Tcl_Command cmd) { Tcl_Command_refCount(cmd)++; MEM_COUNT_ALLOC("command.refCount", cmd); } /* *---------------------------------------------------------------------- * NsfCommandRelease -- * * Decrement Tcl command refCount and free it if necessary * * Results: * void * * Side effects: * Free pot. memory * *---------------------------------------------------------------------- */ static void NsfCommandRelease(Tcl_Command cmd) { /*fprintf(stderr,"NsfCommandRelease %p\n", cmd);*/ MEM_COUNT_FREE("command.refCount", cmd); TclCleanupCommandMacro((Command *)cmd); } /*********************************************************************** * EXTERN callable routines for the preliminary C interface ***********************************************************************/ Nsf_Object * NsfGetSelfObj(Tcl_Interp *interp) { return (Nsf_Object *) GetSelfObj(interp); } Nsf_Object * NsfGetObject(Tcl_Interp *interp, CONST char *name) { return (Nsf_Object *) GetObjectFromString(interp, name); } Nsf_Class * NsfGetClass(Tcl_Interp *interp, CONST char *name) { return (Nsf_Class *)GetClassFromString(interp, name); } Nsf_Class * NsfIsClass(Tcl_Interp *UNUSED(interp), ClientData clientData) { if (clientData && NsfObjectIsClass((NsfObject *)clientData)) { return (Nsf_Class *) clientData; } return NULL; } void NsfRequireObjNamespace(Tcl_Interp *interp, Nsf_Object *object) { RequireObjNamespace(interp, (NsfObject *) object); } Tcl_Obj * Nsf_ObjSetVar2(Nsf_Object *object, Tcl_Interp *interp, Tcl_Obj *name1, Tcl_Obj *name2, Tcl_Obj *valueObj, int flags) { Tcl_Obj *result; CallFrame frame, *framePtr = &frame; Nsf_PushFrameObj(interp, (NsfObject *)object, framePtr); if (((NsfObject *)object)->nsPtr) { flags |= TCL_NAMESPACE_ONLY; } result = Tcl_ObjSetVar2(interp, name1, name2, valueObj, flags); Nsf_PopFrameObj(interp, framePtr); return result; } Tcl_Obj * Nsf_ObjGetVar2(Nsf_Object *object, Tcl_Interp *interp, Tcl_Obj *name1, Tcl_Obj *name2, int flags) { Tcl_Obj *result; CallFrame frame, *framePtr = &frame; Nsf_PushFrameObj(interp, (NsfObject *)object, framePtr); if (((NsfObject *)object)->nsPtr) { flags |= TCL_NAMESPACE_ONLY; } result = Tcl_ObjGetVar2(interp, name1, name2, flags); Nsf_PopFrameObj(interp, framePtr); return result; } int Nsf_UnsetVar2(Nsf_Object *object1, Tcl_Interp *interp, CONST char *name1, CONST char *name2, int flags) { NsfObject *object = (NsfObject *) object1; int result; CallFrame frame, *framePtr = &frame; Nsf_PushFrameObj(interp, object, framePtr); if (object->nsPtr) { flags |= TCL_NAMESPACE_ONLY; } result = Tcl_UnsetVar2(interp, name1, name2, flags); Nsf_PopFrameObj(interp, framePtr); return result; } int NsfCreate(Tcl_Interp *interp, Nsf_Class *class, Tcl_Obj *nameObj, int objc, Tcl_Obj *CONST objv[]) { NsfClass *cl = (NsfClass *) class; int result; ALLOC_ON_STACK(Tcl_Obj *, objc+2, ov); INCR_REF_COUNT2("nameObj", nameObj); ov[0] = NULL; ov[1] = nameObj; if (objc>0) { memcpy(ov+2, objv, sizeof(Tcl_Obj *)*objc); } result = NsfCCreateMethod(interp, cl, ObjStr(nameObj), objc+2, ov); FREE_ON_STACK(Tcl_Obj*, ov); DECR_REF_COUNT2("nameObj", nameObj); return result; } int NsfDeleteObject(Tcl_Interp *interp, Nsf_Object *object) { return DispatchDestroyMethod(interp, (NsfObject *)object, 0); } int NsfRemoveObjectMethod(Tcl_Interp *interp, Nsf_Object *object1, CONST char *methodName) { NsfObject *object = (NsfObject *) object1; /*fprintf(stderr, "... NsfRemoveObjectMethod %s %s\n", ObjectName(object), methodName);*/ NsfObjectMethodEpochIncr("NsfRemoveObjectMethod"); AliasDelete(interp, object->cmdName, methodName, 1); #if defined(NSF_WITH_ASSERTIONS) if (object->opt) { AssertionRemoveProc(object->opt->assertions, methodName); } #endif if (object->nsPtr) { int rc = NSDeleteCmd(interp, object->nsPtr, methodName); if (rc < 0) { return NsfPrintError(interp, "%s: cannot delete object specific method '%s'", ObjectName(object), methodName); } } return TCL_OK; } int NsfRemoveClassMethod(Tcl_Interp *interp, Nsf_Class *class, CONST char *methodName) { NsfClass *cl = (NsfClass *) class; int rc; #if defined(NSF_WITH_ASSERTIONS) NsfClassOpt *opt = cl->opt; #endif /*fprintf(stderr, "... NsfRemoveClassMethod %s %s\n", ClassName(class), methodName);*/ NsfInstanceMethodEpochIncr("NsfRemoveClassMethod"); AliasDelete(interp, class->object.cmdName, methodName, 0); #if defined(NSF_WITH_ASSERTIONS) if (opt && opt->assertions) { AssertionRemoveProc(opt->assertions, methodName); } #endif rc = NSDeleteCmd(interp, cl->nsPtr, methodName); if (rc < 0) { return NsfPrintError(interp, "%s: cannot delete method '%s'", ClassName(cl), methodName); } return TCL_OK; } #if defined(NSFOBJ_TRACE) void ObjTrace(char *string, NsfObject *object) { if (object) { fprintf(stderr, "--- %s tcl %p %s (%d %p) nsf %p (%d) %s \n", string, object->cmdName, object->cmdName->typePtr ? object->cmdName->typePtr->name : "NULL", object->cmdName->refCount, object->cmdName->internalRep.twoPtrValue.ptr1, object, object->refCount, ObjectName(object)); } else { fprintf(stderr, "--- No object: %s\n", string); } } #else # define ObjTrace(a, b) #endif /* *---------------------------------------------------------------------- * NSTail -- * * Return the namespace tail of a name. * * Results: * String. * * Side effects: * None. * *---------------------------------------------------------------------- */ /* search for tail of name */ static CONST char * NSTail(CONST char *string) { register char *p = (char *)string+strlen(string); while (p > string) { if (unlikely(*p == ':' && *(p-1) == ':')) { return p+1; } p--; } return string; } /* *---------------------------------------------------------------------- * IsClassNsName -- * * Check, if the provided string starts with the prefix of the * classes namespace. * * Results: * Boolean. * * Side effects: * None. * *---------------------------------------------------------------------- */ NSF_INLINE static int IsClassNsName(CONST char *string, CONST char **cont) { assert(string); if (*string == ':' && strncmp((string), "::nsf::classes", 14) == 0) { if (cont) {*cont = string + 14;} return 1; } return 0; } /* *---------------------------------------------------------------------- * NSCutNsfClasses -- * * Removes preceding ::nsf::classes from a string * * Results: * NsfObject and *fromClasses * * Side effects: * None. * *---------------------------------------------------------------------- */ NSF_INLINE static CONST char * NSCutNsfClasses(CONST char *string) { assert(strncmp((string), "::nsf::classes", 14) == 0); return string+14; } /* *---------------------------------------------------------------------- * GetObjectFromNsName -- * * Get object or class from a fully qualified cmd name, such as * e.g. ::nsf::classes::X * * Results: * NsfObject and *fromClasses * * Side effects: * None. * *---------------------------------------------------------------------- */ NSF_INLINE static NsfObject * GetObjectFromNsName(Tcl_Interp *interp, CONST char *string, int *fromClassNS) { CONST char *className; if (IsClassNsName(string, &className)) { *fromClassNS = 1; return (NsfObject *)GetClassFromString(interp, className); } else { *fromClassNS = 0; return GetObjectFromString(interp, string); } } /* *---------------------------------------------------------------------- * DStringAppendQualName -- * * Append to initialized DString the name of the namespace followed * by a simple name (methodName, cmdName). * * Results: * String pointing to DString value. * * Side effects: * None. * *---------------------------------------------------------------------- */ static char * DStringAppendQualName(Tcl_DString *dsPtr, Tcl_Namespace *nsPtr, CONST char *name) { int oldLength = Tcl_DStringLength(dsPtr); Tcl_DStringAppend(dsPtr, nsPtr->fullName, -1); if (Tcl_DStringLength(dsPtr) > (oldLength + 2)) { Tcl_DStringAppend(dsPtr, "::", 2); } Tcl_DStringAppend(dsPtr, name, -1); return Tcl_DStringValue(dsPtr); } static void NsfCleanupObject_(NsfObject *object) { NsfObjectRefCountDecr(object); /*fprintf(stderr, "NsfCleanupObject obj refCount of %p after decr %d id %p interp %p flags %.6x\n", object, object->refCount, object->id, object->teardown, object->flags);*/ if (unlikely(object->refCount <= 0)) { /*fprintf(stderr, "NsfCleanupObject %p ref-count %d\n", object, object->refCount);*/ assert(object->refCount == 0); assert(object->flags & NSF_DELETED); /* * During FinalObjectDeletion(), object->teardown is NULL, we cannot access * the object and class names anymore. */ if (object->teardown && NSF_DTRACE_OBJECT_FREE_ENABLED()) { NSF_DTRACE_OBJECT_FREE(ObjectName(object), ClassName(object->cl)); } MEM_COUNT_FREE("NsfObject/NsfClass", object); #if defined(NSFOBJ_TRACE) fprintf(stderr, "CKFREE Object %p refCount=%d\n", object, object->refCount); #endif #if !defined(NDEBUG) memset(object, 0, sizeof(NsfObject)); #endif ckfree((char *) object); } } /* * Tcl_Obj functions for objects */ /* *---------------------------------------------------------------------- * TclObjIsNsfObject -- * * Check, if the provided Tcl_Obj is bound to a nsf object. If so, return * the NsfObject in the third argument. * * Results: * True or false, * * Side effects: * None * *---------------------------------------------------------------------- */ static int TclObjIsNsfObject(Tcl_Interp *interp, Tcl_Obj *objPtr, NsfObject **objectPtr) { Tcl_ObjType CONST86 *cmdType = objPtr->typePtr; if (cmdType == Nsf_OT_tclCmdNameType) { Tcl_Command cmd = Tcl_GetCommandFromObj(interp, objPtr); if (likely(cmd != NULL)) { NsfObject *object = NsfGetObjectFromCmdPtr(cmd); if (object) { *objectPtr = object; return 1; } } } return 0; } /* *---------------------------------------------------------------------- * GetObjectFromObj -- * * Lookup an Next Scripting object from the given objPtr, preferably from * an object of type "cmdName". On success the NsfObject is returned in the * third argument. The objPtr might be converted by this function. * * Results: * True or false, * * Side effects: * object type of objPtr might be changed * *---------------------------------------------------------------------- */ static int GetObjectFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr, NsfObject **objectPtr) { int result; NsfObject *object; CONST char *string; Tcl_Command cmd; /*fprintf(stderr, "GetObjectFromObj obj %p %s is of type %s\n", objPtr, ObjStr(objPtr), objPtr->typePtr ? objPtr->typePtr->name : "(null)");*/ /* in case, objPtr was not of type cmdName, try to convert */ cmd = Tcl_GetCommandFromObj(interp, objPtr); /*fprintf(stderr, "GetObjectFromObj obj %s => cmd=%p (%d)\n", ObjStr(objPtr), cmd, cmd ? Tcl_Command_refCount(cmd):-1);*/ if (cmd) { NsfObject *object = NsfGetObjectFromCmdPtr(cmd); /*fprintf(stderr, "GetObjectFromObj obj %s, o is %p objProc %p NsfObjDispatch %p\n", ObjStr(objPtr), object, Tcl_Command_objProc(cmd), NsfObjDispatch);*/ if (object) { if (objectPtr) *objectPtr = object; return TCL_OK; } } /*fprintf(stderr, "GetObjectFromObj convertFromAny for %s type %p %s\n", ObjStr(objPtr), objPtr->typePtr, objPtr->typePtr ? objPtr->typePtr->name : "(none)");*/ /* In case, we have to revolve via the CallingNameSpace (i.e. the * argument is not fully qualified), we retry here. */ string = ObjStr(objPtr); if (isAbsolutePath(string)) { object = NULL; } else { Tcl_Obj *tmpName = NameInNamespaceObj(interp, string, CallingNameSpace(interp)); CONST char *nsString = ObjStr(tmpName); INCR_REF_COUNT(tmpName); object = GetObjectFromString(interp, nsString); /* fprintf(stderr, " RETRY, string '%s' returned %p\n", nsString, object);*/ DECR_REF_COUNT(tmpName); } if (object) { if (objectPtr) *objectPtr = object; result = TCL_OK; } else { result = TCL_ERROR; } return result; } /* *---------------------------------------------------------------------- * NsfCallObjectUnknownHandler -- * * Call ::nsf::object::unknown; this function is typically called, when an unknown * object or class is passed as an argument. * * Results: * Tcl result code * * Side effects: * Called handler might side effect. * *---------------------------------------------------------------------- */ static int NsfCallObjectUnknownHandler(Tcl_Interp *interp, Tcl_Obj *nameObj) { int result; Tcl_Obj *ov[3]; /*fprintf(stderr, "try ::nsf::object::unknown for '%s'\n", ObjStr(nameObj));*/ ov[0] = NsfGlobalObjs[NSF_OBJECT_UNKNOWN_HANDLER]; ov[1] = nameObj; INCR_REF_COUNT(ov[1]); result = Tcl_EvalObjv(interp, 2, ov, 0); DECR_REF_COUNT(ov[1]); return result; } #if 0 static int NsfCallArgumentUnknownHandler(Tcl_Interp *interp, Tcl_Obj *methodObj, Tcl_Obj *argumentObj, NsfObject *object) { Tcl_Obj *ov[4]; int result, oc = 3; /*fprintf(stderr, "try ::nsf::argument::unknown for '%s'\n", ObjStr(nameObj));*/ ov[0] = NsfGlobalObjs[NSF_ARGUMENT_UNKNOWN_HANDLER]; ov[1] = methodObj; ov[2] = argumentObj; if (object) { ov[3] = object->cmdName; oc ++; } INCR_REF_COUNT(ov[1]); result = Tcl_EvalObjv(interp, oc, ov, 0); DECR_REF_COUNT(ov[1]); return result; } #endif /* *---------------------------------------------------------------------- * GetClassFromObj -- * * Lookup an Next Scripting class from the given objPtr. If the class could * not be directly converted and withUnknown is true, the function calls * the unknown function (::nsf::object::unknown) to fetch the class on * demand and retries the conversion. On success the NsfClass is returned * in the third argument. The objPtr might be converted by this function. * * Results: * True or false, * * Side effects: * object type of objPtr might be changed * *---------------------------------------------------------------------- */ static int GetClassFromObj(Tcl_Interp *interp, register Tcl_Obj *objPtr, NsfClass **clPtr, int withUnknown) { NsfObject *object; NsfClass *cls = NULL; int result = TCL_OK; CONST char *objName = ObjStr(objPtr); Tcl_Command cmd; cmd = Tcl_GetCommandFromObj(interp, objPtr); /*fprintf(stderr, "GetClassFromObj %p %s unknown %d cmd %p\n", objPtr, objName, withUnknown, cmd);*/ if (cmd) { cls = NsfGetClassFromCmdPtr(cmd); #if 1 if (cls == NULL) { /* * We have a cmd, but no class; namespace-imported classes are already * resolved, but we have to care, if a class is "imported" via "interp * alias". */ Tcl_Interp *alias_interp; const char *alias_cmd_name; Tcl_Obj *nameObj = objPtr; Tcl_Obj **alias_ov; int alias_oc = 0; if (!isAbsolutePath(objName)) { nameObj = NameInNamespaceObj(interp, objName, CallingNameSpace(interp)); objName = ObjStr(nameObj); INCR_REF_COUNT(nameObj); } result = Tcl_GetAliasObj(interp, objName, &alias_interp, &alias_cmd_name, &alias_oc, &alias_ov); Tcl_ResetResult(interp); /* we only want interp-aliases with 0 args */ if (result == TCL_OK && alias_oc == 0) { cmd = NSFindCommand(interp, alias_cmd_name); /*fprintf(stderr, "..... alias arg 0 '%s' cmd %p\n", alias_cmd_name, cmd);*/ if (cmd) { cls = NsfGetClassFromCmdPtr(cmd); } } /*fprintf(stderr, "..... final cmd %p, cls %p\n", cmd , cls);*/ if (nameObj != objPtr) { DECR_REF_COUNT(nameObj); } } #endif if (cls) { if (clPtr) *clPtr = cls; return TCL_OK; } } result = GetObjectFromObj(interp, objPtr, &object); if (result == TCL_OK) { cls = NsfObjectToClass(object); if (cls) { if (clPtr) *clPtr = cls; return TCL_OK; } else { /* flag, that we could not convert so far */ result = TCL_ERROR; } } if (withUnknown) { result = NsfCallObjectUnknownHandler(interp, isAbsolutePath(objName) ? objPtr : NameInNamespaceObj(interp, objName, CallingNameSpace(interp))); if (result == TCL_OK) { /* Retry, but now, the last argument (withUnknown) has to be 0 */ result = GetClassFromObj(interp, objPtr, clPtr, 0); } /*fprintf(stderr, "... ::nsf::object::unknown for '%s', result %d cl %p\n", objName, result, cl);*/ } return result; } /* * Version of GetClassFromObj() with external symbol */ int NsfGetClassFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr, NsfClass **clPtr, int withUnknown) { return GetClassFromObj(interp, objPtr, clPtr, withUnknown); } /* *---------------------------------------------------------------------- * IsObjectOfType -- * * Check, if the provided NsfObject is of a certain type. The arguments * "what" and "objPtr" are just used for the error messages. objPtr is the * value from which the object was converted from. * * Results: * Tcl result code. * * Side effects: * None * *---------------------------------------------------------------------- */ static int IsObjectOfType(Tcl_Interp *interp, NsfObject *object, CONST char *what, Tcl_Obj *objPtr, Nsf_Param CONST *pPtr) { NsfClass *cl; Tcl_DString ds, *dsPtr = &ds; if (unlikely(pPtr->flags & NSF_ARG_BASECLASS) && !IsBaseClass(object)) { what = "baseclass"; goto type_error; } if (unlikely(pPtr->flags & NSF_ARG_METACLASS) && !IsMetaClass(interp, (NsfClass *)object, 1)) { what = "metaclass"; goto type_error; } if (likely(pPtr->converterArg == NULL)) { return TCL_OK; } if ((GetClassFromObj(interp, pPtr->converterArg, &cl, 0) == TCL_OK) && IsSubType(object->cl, cl)) { return TCL_OK; } type_error: DSTRING_INIT(dsPtr); Tcl_DStringAppend(dsPtr, what, -1); if (pPtr->converterArg) { Tcl_DStringAppend(dsPtr, " of type ", -1); Tcl_DStringAppend(dsPtr, ObjStr(pPtr->converterArg), -1); } NsfObjErrType(interp, NULL, objPtr, Tcl_DStringValue(dsPtr), (Nsf_Param *)pPtr); DSTRING_FREE(dsPtr); return TCL_ERROR; } /* *---------------------------------------------------------------------- * NameInNamespaceObj -- * * Create a fully qualified name in the provided namespace or in * the current namespace in form of an Tcl_Obj (with 0 refCount); * * Results: * Tcl_Obj containing fully qualified name * * Side effects: * Allocates fresh copies of list elements * *---------------------------------------------------------------------- */ static Tcl_Obj * NameInNamespaceObj(Tcl_Interp *interp, CONST char *name, Tcl_Namespace *nsPtr) { Tcl_Obj *objPtr; Tcl_DString ds, *dsPtr = &ds; assert(nsPtr); /*fprintf(stderr, "NameInNamespaceObj %s (%p, %s) ", name, nsPtr, nsPtr->fullName);*/ DSTRING_INIT(dsPtr); DStringAppendQualName(dsPtr, nsPtr, name); objPtr = Tcl_NewStringObj(Tcl_DStringValue(dsPtr), Tcl_DStringLength(dsPtr)); /*fprintf(stderr, "returns %s\n", ObjStr(objPtr));*/ DSTRING_FREE(dsPtr); return objPtr; } /* *---------------------------------------------------------------------- * NsfReverseClasses -- * * Reverse class list. Caller is responsible for freeing data. * * Results: * Pointer to start of the reversed list * * Side effects: * Allocates fresh copies of list elements * *---------------------------------------------------------------------- */ static NsfClasses * NsfReverseClasses(NsfClasses *sl) { NsfClasses *firstPtr = NULL; for (; sl; sl = sl->nextPtr) { NsfClasses *element = NEW(NsfClasses); element->cl = sl->cl; element->clientData = sl->clientData; element->nextPtr = firstPtr; firstPtr = element; } return firstPtr; } /* *---------------------------------------------------------------------- * NsfClassListFree -- * * Frees all elements of the provided class list * * Results: * None. * * Side effects: * Frees memory. * *---------------------------------------------------------------------- */ static void NsfClassListFree(NsfClasses *classList) { NsfClasses *nextPtr; for (; classList; classList = nextPtr) { nextPtr = classList->nextPtr; FREE(NsfClasses, classList); } } /* *---------------------------------------------------------------------- * NsfClassListAdd -- * * Add class list entry to the specified list. In case the initial * list is empty, *firstPtrPtr is updated as well. * * Results: * Returns address of next-pointer. * * Side effects: * New list element is allocated. * *---------------------------------------------------------------------- */ static NsfClasses ** NsfClassListAdd(NsfClasses **firstPtrPtr, NsfClass *cl, ClientData clientData) { NsfClasses *l = *firstPtrPtr, *element = NEW(NsfClasses); element->cl = cl; element->clientData = clientData; element->nextPtr = NULL; if (l) { while (l->nextPtr) { l = l->nextPtr; } l->nextPtr = element; } else { *firstPtrPtr = element; } return &(element->nextPtr); } /* *---------------------------------------------------------------------- * NsfClassListAddNoDup -- * * Add class list entry to the specified list without duplicates. In case * the initial list is empty, *firstPtrPtr is updated as well. * * Results: * Returns address of next pointer. * * Side effects: * New list element is allocated. * *---------------------------------------------------------------------- */ static NsfClasses ** NsfClassListAddNoDup(NsfClasses **firstPtrPtr, NsfClass *cl, ClientData clientData, int *isNewPtr) { NsfClasses *clPtr = *firstPtrPtr, **nextPtr; if (clPtr) { for (; clPtr->nextPtr && clPtr->cl != cl; clPtr = clPtr->nextPtr); nextPtr = &clPtr->nextPtr; } else { nextPtr = firstPtrPtr; } if (*nextPtr == NULL) { NsfClasses *element = NEW(NsfClasses); element->cl = cl; element->clientData = clientData; element->nextPtr = NULL; *nextPtr = element; if (isNewPtr) { *isNewPtr = 1; } } else { if (isNewPtr) { *isNewPtr = 0; } } return nextPtr; } /* *---------------------------------------------------------------------- * NsfClassListFind -- * * Find an element in the class list and return it if found. * * Results: * Found element or NULL * * Side effects: * None. * *---------------------------------------------------------------------- */ static NsfClasses * NsfClassListFind(NsfClasses *clPtr, NsfClass *cl) { for (; clPtr; clPtr = clPtr->nextPtr) { if (clPtr->cl == cl) break; } return clPtr; } #if 0 /* debugging purposes only */ /* *---------------------------------------------------------------------- * NsfClassListStats -- * * Print some statistics about generated Class List structures for * debugging purpose. * * Results: * None. * * Side effects: * None. * *---------------------------------------------------------------------- */ static void NsfClassListStats(CONST char *title, NsfClasses *classList) { NsfClass *cl; int count = 0; cl = classList ? classList->cl : NULL; for (; classList; classList = classList->nextPtr) { count++; } fprintf(stderr, "%s class list starting with %s has %d elements\n", title, cl ? ClassName(cl) : "none", count); } static void NsfClassListPrint(CONST char *title, NsfClasses *clsList) { if (title) { fprintf(stderr, "%s", title); } fprintf(stderr, " %p: ", clsList); while (clsList) { fprintf(stderr, "%p %s ", clsList->cl, ClassName(clsList->cl)); clsList = clsList->nextPtr; } fprintf(stderr, "\n"); } #endif #if defined(CHECK_ACTIVATION_COUNTS) /* *---------------------------------------------------------------------- * NsfClassListUnlink -- * * Return removed item with matching key form nsfClasses. * Key is void to allow not only class pointers as keys. * * Results: * unlinked element or NULL. * In case the first element is unlinked, *firstPtrPtr * is updated. * * Side effects: * none. * *---------------------------------------------------------------------- */ static NsfClasses * NsfClassListUnlink(NsfClasses **firstPtrPtr, void *key) { NsfClasses *entryPtr = NULL; if (*firstPtrPtr != NULL) { NsfClasses *prevPtr; /* list is non-empty */ for (entryPtr = *firstPtrPtr; entryPtr; prevPtr = entryPtr, entryPtr = entryPtr->nextPtr) { if ((void *)entryPtr->cl == key) { /* found entry */ if (prevPtr) { /* later item */ prevPtr->nextPtr = entryPtr->nextPtr; } else { /* first item */ *firstPtrPtr = entryPtr->nextPtr; } break; } } } return entryPtr; } #endif /* * precedence ordering functions */ /* *---------------------------------------------------------------------- * TopoSort -- * * Perform a topological sort of the class hierarchies. Depending on the * argument "direction" it performs the sort on the transitive list of * superclasses or subclasses. The resulting list contains no duplicates or * cycles and is returned in the class member "order". During the * computation it colors the processed nodes in WHITE, GRAY or BLACK. * * Results: * Boolean value indicating success. * * Side effects: * Allocating class list. * *---------------------------------------------------------------------- */ enum colors { WHITE, GRAY, BLACK }; typedef enum { SUPER_CLASSES, SUB_CLASSES } ClassDirection; static int TopoSort(NsfClass *cl, NsfClass *baseClass, ClassDirection direction) { NsfClasses *sl = direction == SUPER_CLASSES ? cl->super : cl->sub; NsfClasses *pl; /* * Be careful to reset the color of unreported classes to * white in case we unwind with error, and on final exit * reset color of reported classes to WHITE. Meaning of colors: * * WHITE ... not processed * GRAY ... in work * BLACK ... done */ cl->color = GRAY; for (; sl; sl = sl->nextPtr) { NsfClass *sc = sl->cl; if (sc->color == GRAY) { cl->color = WHITE; return 0; } if (unlikely(sc->color == WHITE && !TopoSort(sc, baseClass, direction))) { cl->color = WHITE; if (cl == baseClass) { register NsfClasses *pc; for (pc = cl->order; pc; pc = pc->nextPtr) { pc->cl->color = WHITE; } } return 0; } } cl->color = BLACK; pl = NEW(NsfClasses); pl->cl = cl; pl->nextPtr = baseClass->order; baseClass->order = pl; if (unlikely(cl == baseClass)) { register NsfClasses *pc; for (pc = cl->order; pc; pc = pc->nextPtr) { pc->cl->color = WHITE; } } return 1; } /* *---------------------------------------------------------------------- * TransitiveSuperClasses -- * * Return a class list containing the transitive list of super classes * starting with (and containing) the provided class. The super class list * is cached in cl->order and has to be invalidated by FlushPrecedences() * in case the order changes. The caller does not have free the returned * class list (like for TransitiveSubClasses); * * Results: * Class list * * Side effects: * Updating cl->order. * *---------------------------------------------------------------------- */ NSF_INLINE static NsfClasses * TransitiveSuperClasses(NsfClass *cl) { /* * Check, of the superclass order is already cached. */ if (likely(cl->order != NULL)) { return cl->order; } /* * If computation is successful, return cl->order. * Otherwise clear cl->order. */ if (likely(TopoSort(cl, cl, SUPER_CLASSES))) { return cl->order; } else { NsfClassListFree(cl->order); return cl->order = NULL; } } /* *---------------------------------------------------------------------- * TransitiveSubClasses -- * * Return a class list containing the transitive list of sub-classes * starting with (and containing) the provided class.The caller has to free * the returned class list. * * Results: * Class list * * Side effects: * Just indirect. * *---------------------------------------------------------------------- */ NSF_INLINE static NsfClasses * TransitiveSubClasses(NsfClass *cl) { NsfClasses *order, *savedOrder; /* * Since TopoSort() places its result in cl->order, we have to save the old * cl->order, perform the computation and restore the old order. */ savedOrder = cl->order; cl->order = NULL; if (likely(TopoSort(cl, cl, SUB_CLASSES))) { order = cl->order; } else { NsfClassListFree(cl->order); order = NULL; } cl->order = savedOrder; return order; } /* *---------------------------------------------------------------------- * FlushPrecedences -- * * This function iterations over the provided class list and flushes (and * frees) the superclass caches in cl->order for every element. * * Results: * None. * * Side effects: * Freeing class lists cached in cl->order. * *---------------------------------------------------------------------- */ static void FlushPrecedences(NsfClasses *subClasses) { NsfClasses *clPtr; for (clPtr = subClasses; clPtr; clPtr = clPtr->nextPtr) { NsfClassListFree(clPtr->cl->order); clPtr->cl->order = NULL; } } /* *---------------------------------------------------------------------- * AddInstance -- * * Add an instance to a class. * * Results: * None. * * Side effects: * Add entry to children hash-table. * *---------------------------------------------------------------------- */ static void AddInstance(NsfObject *object, NsfClass *cl) { int newItem; assert(cl); object->cl = cl; (void) Tcl_CreateHashEntry(&cl->instances, (char *)object, &newItem); /*if (newItem == 0) { fprintf(stderr, "instance %p %s was already an instance of %p %s\n", object, ObjectName(object), cl, ClassName(cl)); }*/ assert(newItem); } /* *---------------------------------------------------------------------- * RemoveInstance -- * * Remove an instance from a class. The function checks, whether the entry * is actually still an instance before it deletes it. * * Results: * void * * Side effects: * Entry deleted from instances hash-table * *---------------------------------------------------------------------- */ static void RemoveInstance(NsfObject *object, NsfClass *cl) { assert(cl); /* * If we are during a delete, which should not happen under normal * operations, prevent an abort due to a deleted hash table. */ if (cl->object.flags & NSF_DURING_DELETE) { NsfLog(cl->object.teardown, NSF_LOG_WARN, "Class which should loose instance is currently being deleted: %s", ClassName(cl)); } else { Tcl_HashEntry *hPtr = Tcl_CreateHashEntry(&cl->instances, (char *)object, NULL); /*if (hPtr == NULL) { fprintf(stderr, "instance %s is not an instance of %s\n", ObjectName(object), ClassName(cl)); }*/ assert(hPtr); Tcl_DeleteHashEntry(hPtr); } } /* * superclass/subclass list maintenance */ static void AS(NsfClass *s, NsfClasses **sl) { #if 0 register NsfClasses *l = *sl; while (l && l->cl != s) { l = l->nextPtr; } #else register NsfClasses *l = NULL; #endif if (!l) { NsfClasses *sc = NEW(NsfClasses); sc->cl = s; sc->nextPtr = *sl; *sl = sc; } } static void AddSuper(NsfClass *cl, NsfClass *super) { if (cl && super) { /* * keep corresponding sub in step with super */ AS(super, &cl->super); AS(cl, &super->sub); } } static int RemoveSuper1(NsfClass *s, NsfClasses **sl) { NsfClasses *l = *sl; if (!l) return 0; if (l->cl == s) { *sl = l->nextPtr; FREE(NsfClasses, l); return 1; } while (l->nextPtr && l->nextPtr->cl != s) l = l->nextPtr; if (l->nextPtr) { NsfClasses *n = l->nextPtr->nextPtr; FREE(NsfClasses, l->nextPtr); l->nextPtr = n; return 1; } return 0; } static int RemoveSuper(NsfClass *cl, NsfClass *super) { /* * keep corresponding sub in step with super */ int sp = RemoveSuper1(super, &cl->super); int sb = RemoveSuper1(cl, &super->sub); return sp && sb; } /* * methods lookup */ /* *---------------------------------------------------------------------- * GetEnsembeObjectFromName -- * * Get an ensemble object from a method name. If the method name * is fully qualified, just use a Tcl lookup, otherwise get it from * the provided namespace, * * Results: * ensemble object or NULL * * Side effects: * none * *---------------------------------------------------------------------- */ static NsfObject * GetEnsembeObjectFromName(Tcl_Interp *interp, Tcl_Namespace *nsPtr, Tcl_Obj *name, Tcl_Command *cmdPtr, int *fromClassNS) { Tcl_Command cmd; char *nameString = ObjStr(name); if (*nameString == ':') { cmd = Tcl_GetCommandFromObj(interp, name); *fromClassNS = IsClassNsName(nameString, NULL); } else { cmd = nsPtr ? FindMethod(nsPtr, nameString) : NULL; } if (cmd) { *cmdPtr = cmd; return NsfGetObjectFromCmdPtr(GetOriginalCommand(cmd)); } return NULL; } /* *---------------------------------------------------------------------- * GetRegObject -- * * Try to get the object, on which the method was registered from a * fully qualified method handle * * Results: * NsfObject * or NULL on failure * * Side effects: * none * *---------------------------------------------------------------------- */ static NsfObject * GetRegObject(Tcl_Interp *interp, Tcl_Command cmd, CONST char *methodName, CONST char **methodName1, int *fromClassNS) { NsfObject *regObject; CONST char *procName; size_t objNameLength; assert(methodName && *methodName == ':'); assert(cmd); procName = Tcl_GetCommandName(interp, cmd); objNameLength = strlen(methodName) - strlen(procName) - 2; if (objNameLength > 0) { Tcl_DString ds, *dsPtr = &ds; /* obtain parent name */ Tcl_DStringInit(dsPtr); Tcl_DStringAppend(dsPtr, methodName, objNameLength); regObject = GetObjectFromNsName(interp, Tcl_DStringValue(dsPtr), fromClassNS); if (regObject && methodName1) { *methodName1 = procName; } Tcl_DStringFree(dsPtr); } else { regObject = NULL; } /*fprintf(stderr, "GetRegObject cmd %p methodName '%s' => %p\n", cmd, methodName, regObject);*/ return regObject; } /* *---------------------------------------------------------------------- * ResolveMethodName -- * * Resolve a method name relative to a provided namespace. * The method name can be * a) a fully qualified name * b) a list of method name and subcommands * c) a simple name * * Results: * Tcl_Command or NULL on failure * * Side effects: * none * *---------------------------------------------------------------------- */ static Tcl_Command ResolveMethodName(Tcl_Interp *interp, Tcl_Namespace *nsPtr, Tcl_Obj *methodObj, Tcl_DString *methodNameDs, NsfObject **regObject, NsfObject **defObject, CONST char **methodName1, int *fromClassNS) { char *methodName = ObjStr(methodObj); NsfObject *referencedObject; int containsSpace; Tcl_Command cmd; /*fprintf(stderr,"methodName '%s' comp %d type %s\n", methodName, strchr(methodName, ' ')>0, methodObj->typePtr ? methodObj->typePtr->name : "(none)");*/ if (methodObj->typePtr == Nsf_OT_listType) { int length; Tcl_ListObjLength(interp, methodObj, &length); containsSpace = length > 1; } else if (methodObj->typePtr == Nsf_OT_tclCmdNameType) { containsSpace = 0; } else { containsSpace = strchr(methodName, ' ') != NULL; } #if !defined(NDBUG) if (containsSpace) { assert(strchr(methodName, ' ') != 0); } else { assert(strchr(methodName, ' ') == 0); } #endif if (containsSpace) { CONST char *firstElementString; Tcl_Namespace *parentNsPtr; NsfObject *ensembleObject; Tcl_Obj *methodHandleObj, **ov; int oc, i; /* * When the methodName is required, we have to provide a methodNameDS as * well. */ assert(methodName1 == NULL || methodNameDs != NULL); /*fprintf(stderr, "name '%s' contains space \n", methodName);*/ if ((Tcl_ListObjGetElements(interp, methodObj, &oc, &ov) != TCL_OK) || ((referencedObject = GetEnsembeObjectFromName(interp, nsPtr, ov[0], &cmd, fromClassNS)) == NULL) ) { if (methodName1) {*methodName1 = NULL;} if (regObject) {*regObject = NULL;} if (defObject) {*defObject = NULL;} return NULL; } /* * We have an ensemble object. First, figure out, on which * object/class the ensemble object was registered. We determine * the regObject on the first element of the list. If we can't, * then the current object is the regObject. */ firstElementString = ObjStr(ov[0]); if (*firstElementString == ':') { NsfObject *registrationObject; registrationObject = GetRegObject(interp, cmd, firstElementString, methodName1, fromClassNS); if (regObject) {*regObject = registrationObject;} } else { if (regObject) {*regObject = NULL;} } /*fprintf(stderr, "... regObject object '%s' reg %p, fromClassNS %d\n", ObjectName(referencedObject), *regObject, *fromClassNS);*/ /* * Build a fresh methodHandleObj to held method name and names of * subcmds. */ methodHandleObj = Tcl_DuplicateObj(referencedObject->cmdName); INCR_REF_COUNT(methodHandleObj); if (methodNameDs) { Tcl_DStringAppend(methodNameDs, Tcl_GetCommandName(interp, cmd), -1); } parentNsPtr = NULL; /* * Iterate over the objects and append to the methodNameDs and methodHandleObj */ for (i = 1; i < oc; i++) { cmd = Tcl_GetCommandFromObj(interp, methodHandleObj); ensembleObject = cmd ? NsfGetObjectFromCmdPtr(cmd) : NULL; if (!ensembleObject) { DECR_REF_COUNT(methodHandleObj); if (methodName1) {*methodName1 = NULL;} if (regObject) {*regObject = NULL;} if (defObject) {*defObject = NULL;} return NULL; } if (parentNsPtr && Tcl_Command_nsPtr(ensembleObject->id) != parentNsPtr) { /* fprintf(stderr, "*** parent change saved parent %p %s computed parent %p %s\n", parentNsPtr, parentNsPtr->fullName, Tcl_Command_nsPtr(ensembleObject->id), Tcl_Command_nsPtr(ensembleObject->id)->fullName);*/ DECR_REF_COUNT(methodHandleObj); methodHandleObj = Tcl_DuplicateObj(ensembleObject->cmdName); } parentNsPtr = ensembleObject->nsPtr; Tcl_AppendLimitedToObj(methodHandleObj, "::", 2, INT_MAX, NULL); Tcl_AppendLimitedToObj(methodHandleObj, ObjStr(ov[i]), -1, INT_MAX, NULL); if (methodNameDs) { Tcl_DStringAppendElement(methodNameDs, ObjStr(ov[i])); } } /* * cmd contains now the parent-obj, on which the method was * defined. Get from this cmd the defObj. */ if (defObject) {*defObject = NsfGetObjectFromCmdPtr(cmd);} /*fprintf(stderr, "... handle '%s' last cmd %p defObject %p\n", ObjStr(methodHandleObj), cmd, *defObject);*/ /* * Obtain the command from the method handle and report back the * final methodName, */ cmd = Tcl_GetCommandFromObj(interp, methodHandleObj); if (methodName1) {*methodName1 = Tcl_DStringValue(methodNameDs);} /*fprintf(stderr, "... methodname1 '%s' cmd %p\n", Tcl_DStringValue(methodNameDs), cmd);*/ DECR_REF_COUNT(methodHandleObj); } else if (*methodName == ':') { cmd = Tcl_GetCommandFromObj(interp, methodObj); if (likely(cmd != NULL)) { referencedObject = GetRegObject(interp, cmd, methodName, methodName1, fromClassNS); if (regObject) {*regObject = referencedObject;} if (defObject) {*defObject = referencedObject;} if (methodName1 && *methodName1 == NULL) { /* * The return value for the method name is required and was not * computed by GetRegObject() */ *methodName1 = Tcl_GetCommandName(interp, cmd); } } else { /* * The cmd was not registered on an object or class, but we * still report back the cmd (might be e.g. a primitive cmd). */ if (regObject) {*regObject = NULL;} if (defObject) {*defObject = NULL;} } } else { if (methodName1) {*methodName1 = methodName;} cmd = nsPtr ? FindMethod(nsPtr, methodName) : NULL; if (regObject) {*regObject = NULL;} if (defObject) {*defObject = NULL;} } return cmd; } /* *---------------------------------------------------------------------- * CmdIsProc -- * * Check, whether the cmd is interpreted * * Results: * Boolean * * Side effects: * None * *---------------------------------------------------------------------- */ static int NSF_INLINE CmdIsProc(Tcl_Command cmd) { /* In 8.6: TclIsProc((Command *)cmd) is not equivalent to the definition below */ assert(cmd); return (Tcl_Command_objProc(cmd) == TclObjInterpProc); } /* *---------------------------------------------------------------------- * CmdIsNsfObject -- * * Check whether the provided cmd refers to an NsfObject or Class. * * Results: * Boolean * * Side effects: * None. * *---------------------------------------------------------------------- */ NSF_INLINE static int CmdIsNsfObject(Tcl_Command cmd) { assert(cmd); return Tcl_Command_objProc(cmd) == NsfObjDispatch; } /* *---------------------------------------------------------------------- * GetTclProcFromCommand -- * * Check if cmd refers to a Tcl proc, and if so, return the proc * definition. * * Results: * The found proc of cmd or NULL. * * Side effects: * None * *---------------------------------------------------------------------- */ static Proc * GetTclProcFromCommand(Tcl_Command cmd) { Tcl_ObjCmdProc *proc; assert(cmd); proc = Tcl_Command_objProc(cmd); if (proc == TclObjInterpProc) { return (Proc *)Tcl_Command_objClientData(cmd); } return NULL; } /* *---------------------------------------------------------------------- * FindMethod -- * * Lookup the cmd for methodName in a namespace. * * Results: * The found cmd of the method or NULL. * * Side effects: * None * *---------------------------------------------------------------------- */ NSF_INLINE static Tcl_Command FindMethod(Tcl_Namespace *nsPtr, CONST char *methodName) { register Tcl_HashEntry *entryPtr; assert(nsPtr); if ((entryPtr = Tcl_CreateHashEntry(Tcl_Namespace_cmdTablePtr(nsPtr), methodName, NULL))) { return (Tcl_Command) Tcl_GetHashValue(entryPtr); } return NULL; } /* *---------------------------------------------------------------------- * FindProcMethod -- * * Lookup the proc for methodName in a namespace. * * Results: * The found proc of the method or NULL. * * Side effects: * None * *---------------------------------------------------------------------- */ static Proc * FindProcMethod(Tcl_Namespace *nsPtr, CONST char *methodName) { Tcl_Command cmd; assert (nsPtr); cmd = FindMethod(nsPtr, methodName); return cmd ? GetTclProcFromCommand(cmd) : NULL; } /* *---------------------------------------------------------------------- * SearchPLMethod -- * * Search a method along a provided class list. * The methodName must be simple (must not contain * space). * * Results: * The found class defining the method or NULL. * * Side effects: * None * *---------------------------------------------------------------------- */ static NsfClass * SearchPLMethod0(register NsfClasses *pl, CONST char *methodName, Tcl_Command *cmdPtr) { /* Search the precedence list (class hierarchy) */ for (; pl; pl = pl->nextPtr) { register Tcl_HashEntry *entryPtr = Tcl_CreateHashEntry(Tcl_Namespace_cmdTablePtr(pl->cl->nsPtr), methodName, NULL); if (entryPtr != NULL) { *cmdPtr = (Tcl_Command) Tcl_GetHashValue(entryPtr); return pl->cl; } } return NULL; } static NsfClass * SearchPLMethod(register NsfClasses *pl, CONST char *methodName, Tcl_Command *cmdPtr, int flags) { /* Search the precedence list (class hierarchy) */ for (; pl; pl = pl->nextPtr) { register Tcl_HashEntry *entryPtr = Tcl_CreateHashEntry(Tcl_Namespace_cmdTablePtr(pl->cl->nsPtr), methodName, NULL); if (entryPtr != NULL) { Tcl_Command cmd = (Tcl_Command) Tcl_GetHashValue(entryPtr); if (unlikely(Tcl_Command_flags(cmd) & flags)) { /*fprintf(stderr, "skipped cmd %p flags %.6x & %.6x => %.6x\n", cmd, flags, Tcl_Command_flags(cmd), Tcl_Command_flags(cmd) & flags);*/ continue; } *cmdPtr = cmd; return pl->cl; } } return NULL; } /* *---------------------------------------------------------------------- * SearchCMethod -- * * Search a method along the superclass hierarchy of the provided * class. The methodObj must be simple (must not contain * space). The method has the interface for internal calls during * interpretation, while SearchSimpleCMethod() has the interface * with more overhead for introspection. * * Results: * The found class defining the method or NULL. * * Side effects: * None * *---------------------------------------------------------------------- */ static NsfClass * SearchCMethod(/*@notnull@*/ NsfClass *cl, CONST char *methodName, Tcl_Command *cmdPtr) { assert(cl); return SearchPLMethod0(TransitiveSuperClasses(cl), methodName, cmdPtr); } /* *---------------------------------------------------------------------- * SearchSimpleCMethod -- * * Search a method along the superclass hierarchy of the provided * class. The methodObj must be simple (must not contain * space). The method has the same interface as * SearchComplexCMethod(). * * Results: * The found class defining the method or NULL. * * Side effects: * None * *---------------------------------------------------------------------- */ static NsfClass * SearchSimpleCMethod(Tcl_Interp *interp, /*@notnull@*/ NsfClass *cl, Tcl_Obj *methodObj, Tcl_Command *cmdPtr) { assert(cl); return SearchPLMethod0(TransitiveSuperClasses(cl), ObjStr(methodObj), cmdPtr); } /* *---------------------------------------------------------------------- * SearchComplexCMethod -- * * Search a method along the superclass hierarchy of the provided * class. The methodObj can refer to an ensemble object (can * contain space). The method has the same interface as * SearchSimpleCMethod(). * * Results: * The found class defining the method or NULL. * * Side effects: * None * *---------------------------------------------------------------------- */ static NsfClass * SearchComplexCMethod(Tcl_Interp *interp, /*@notnull@*/ NsfClass *cl, Tcl_Obj *methodObj, Tcl_Command *cmdPtr) { NsfClasses *pl; int fromClassNS = 1; assert(cl); for (pl = TransitiveSuperClasses(cl); pl; pl = pl->nextPtr) { Tcl_Command cmd = ResolveMethodName(interp, pl->cl->nsPtr, methodObj, NULL, NULL, NULL, NULL, &fromClassNS); if (cmd) { *cmdPtr = cmd; return pl->cl; } } return NULL; } /* *---------------------------------------------------------------------- * ObjectFindMethod -- * * Find a method for a given object in the precedence path. The * provided methodObj might be an ensemble object. This function * tries to optimize access by calling different implementations * for simple and ensemble method names. * * Results: * Tcl command. * * Side effects: * None. * *---------------------------------------------------------------------- */ static Tcl_Command ObjectFindMethod(Tcl_Interp *interp, NsfObject *object, Tcl_Obj *methodObj, NsfClass **pcl) { Tcl_Command cmd = NULL; int containsSpace = strchr(ObjStr(methodObj), ' ') != NULL; NsfClass *(*lookupFunction)(Tcl_Interp *interp, NsfClass *cl, Tcl_Obj *methodObj, Tcl_Command *cmdPtr) = containsSpace ? SearchComplexCMethod : SearchSimpleCMethod; if (unlikely(object->flags & NSF_MIXIN_ORDER_VALID) == 0) { MixinComputeDefined(interp, object); } if (object->flags & NSF_MIXIN_ORDER_DEFINED_AND_VALID) { NsfCmdList *mixinList; for (mixinList = object->mixinOrder; mixinList; mixinList = mixinList->nextPtr) { NsfClass *mixin = NsfGetClassFromCmdPtr(mixinList->cmdPtr); if (mixin && (*pcl = (*lookupFunction)(interp, mixin, methodObj, &cmd))) { if (Tcl_Command_flags(cmd) & NSF_CMD_CLASS_ONLY_METHOD && !NsfObjectIsClass(object)) { cmd = NULL; continue; } break; } } } if (!cmd && object->nsPtr) { int fromClassNS = 0; cmd = ResolveMethodName(interp, object->nsPtr, methodObj, NULL, NULL, NULL, NULL, &fromClassNS); } if (!cmd && object->cl) { *pcl = (*lookupFunction)(interp, object->cl, methodObj, &cmd); } return cmd; } /* *---------------------------------------------------------------------- * GetObjectSystem -- * * Return the object system for which the object was defined * * Results: * Object system pointer * * Side effects: * None. * *---------------------------------------------------------------------- */ static NsfObjectSystem * GetObjectSystem(NsfObject *object) { assert(object); if (NsfObjectIsClass(object)) { return ((NsfClass *)object)->osPtr; } assert(object->cl); return object->cl->osPtr; } /* *---------------------------------------------------------------------- * ObjectSystemFree -- * * Free a single object system structure including its root classes. * * Results: * None. * * Side effects: * Free memory of structure, free the root classes. * *---------------------------------------------------------------------- */ static void ObjectSystemFree(Tcl_Interp *interp, NsfObjectSystem *osPtr) { int idx; for (idx=0; idx<=NSF_o_unknown_idx; idx++) { if (osPtr->methods[idx]) { DECR_REF_COUNT(osPtr->methods[idx]); } if (osPtr->handles[idx]) { DECR_REF_COUNT(osPtr->handles[idx]); } } if (osPtr->rootMetaClass && osPtr->rootClass) { RemoveSuper(osPtr->rootMetaClass, osPtr->rootClass); RemoveInstance((NsfObject *)osPtr->rootMetaClass, osPtr->rootMetaClass); RemoveInstance((NsfObject *)osPtr->rootClass, osPtr->rootMetaClass); FinalObjectDeletion(interp, &osPtr->rootClass->object); FinalObjectDeletion(interp, &osPtr->rootMetaClass->object); } FREE(NsfObjectSystem, osPtr); } /* *---------------------------------------------------------------------- * ObjectSystemAdd -- * * Add and entry to the list of object systems of the interpreter. * * Results: * None. * * Side effects: * Updating the per interp list of object systems. * *---------------------------------------------------------------------- */ static void ObjectSystemAdd(Tcl_Interp *interp, NsfObjectSystem *osPtr) { osPtr->nextPtr = RUNTIME_STATE(interp)->objectSystems; RUNTIME_STATE(interp)->objectSystems = osPtr; } /* *---------------------------------------------------------------------- * ObjectSystemsCheckSystemMethod -- * * Mark in all object systems the specified method as * (potentially) overloaded and mark it in the specified * object system as defined. * * Results: * None. * * Side effects: * Updating the object system structure(s). * *---------------------------------------------------------------------- */ static void ObjectSystemsCheckSystemMethod(Tcl_Interp *interp, CONST char *methodName, NsfObject *object) { NsfObjectSystem *osPtr, *defOsPtr = GetObjectSystem(object); char firstChar; assert(methodName); firstChar = *methodName; for (osPtr = RUNTIME_STATE(interp)->objectSystems; osPtr; osPtr = osPtr->nextPtr) { int i, rootClassMethod, flag = 0; for (i=0; i<=NSF_o_unknown_idx; i++) { Tcl_Obj *methodObj = osPtr->methods[i]; CONST char *methodString = methodObj ? ObjStr(methodObj) : NULL; if (methodString && *methodString == firstChar && !strcmp(methodName, methodString)) { flag = 1<definedMethods & flag) { /* * If for some reason (e.g. reload) we redefine the base * methods, these never count as overloads. */ if ((rootClassMethod && object == &defOsPtr->rootClass->object) || (!rootClassMethod && object == &defOsPtr->rootMetaClass->object) ) { /*fprintf(stderr, "+++ %s %.6x NOT overloading %s.%s %s (is root %d, is meta %d)\n", ClassName(defOsPtr->rootClass), osPtr->overloadedMethods, ObjectName(object), methodName, Nsf_SystemMethodOpts[i], object == &defOsPtr->rootClass->object, object == &defOsPtr->rootMetaClass->object);*/ } else { osPtr->overloadedMethods |= flag; /*fprintf(stderr, "+++ %s %.6x overloading %s.%s %s (is root %d, is meta %d)\n", ClassName(defOsPtr->rootClass), osPtr->overloadedMethods, ObjectName(object), methodName, Nsf_SystemMethodOpts[i], object == &defOsPtr->rootClass->object, object == &defOsPtr->rootMetaClass->object);*/ } } if (osPtr == defOsPtr && ((osPtr->definedMethods & flag) == 0)) { /* * Mark the method das defined */ osPtr->definedMethods |= flag; /*fprintf(stderr, "+++ %s %.6x defining %s.%s %s osPtr %p defined %.8x flag %.8x\n", ClassName(defOsPtr->rootClass), osPtr->definedMethods, ObjectName(object), methodName, Nsf_SystemMethodOpts[i], osPtr, osPtr->definedMethods, flag);*/ /* * If there is a method-handle provided for this system method, * register it as a fallback unless the method being defined is * already at the root class. */ if (osPtr->handles[i]) { NsfObject *defObject = rootClassMethod ? &osPtr->rootClass->object : &osPtr->rootMetaClass->object; if (defObject != object) { int result = NsfMethodAliasCmd(interp, defObject, 0, methodName, 0, osPtr->handles[i]); /* * Since the defObject is not equals the overloaded method, the * definition above is effectively an overload of the alias. */ osPtr->overloadedMethods |= flag; NsfLog(interp, NSF_LOG_NOTICE, "Define automatically alias %s for %s", ObjStr(osPtr->handles[i]), Nsf_SystemMethodOpts[i]); /* * If the definition was ok, make the method protected. */ if (result == TCL_OK) { Tcl_Obj *methodObj = Tcl_GetObjResult(interp); Tcl_Command cmd = Tcl_GetCommandFromObj(interp, methodObj); if (cmd) { Tcl_Command_flags(cmd) |= NSF_CMD_CALL_PROTECTED_METHOD; } Tcl_ResetResult(interp); } else { NsfLog(interp, NSF_LOG_WARN, "Could not define alias %s for %s", ObjStr(osPtr->handles[i]), Nsf_SystemMethodOpts[i]); } } } } } } /* *---------------------------------------------------------------------- * ObjectSystemsCleanup -- * * Delete all objects from all defined object systems. This method * is to be called when an Next Scripting process or thread exists. * * Results: * None. * * Side effects: * All commands and objects are deleted, memory is freed. * *---------------------------------------------------------------------- */ static int ObjectSystemsCleanup(Tcl_Interp *interp, int withKeepvars) { NsfCmdList *instances = NULL, *entryPtr; NsfObjectSystem *osPtr, *nPtr; /* Deletion is performed in two rounds: * (a) SOFT DESTROY: invoke all user-defined destroy methods * without destroying objects * (b) PHYSICAL DESTROY: delete the objects and classes, * destroy methods are not invoked anymore * * This is to prevent that the destroy order causes classes to be * deleted before the methods invoked by destroy are executed. Note * that it is necessary to iterate over all object systems * simultaneous, since the might be dependencies between objects of * different object systems. */ /* * Collect all instances from all object systems */ for (osPtr = RUNTIME_STATE(interp)->objectSystems; osPtr; osPtr = osPtr->nextPtr) { GetAllInstances(interp, &instances, osPtr->rootClass); } /***** SOFT DESTROY *****/ RUNTIME_STATE(interp)->exitHandlerDestroyRound = NSF_EXITHANDLER_ON_SOFT_DESTROY; /*fprintf(stderr, "===CALL destroy on OBJECTS\n");*/ for (entryPtr = instances; entryPtr; entryPtr = entryPtr->nextPtr) { NsfObject *object = (NsfObject *)entryPtr->clorobj; /*fprintf(stderr, "key = %s %p %d flags %.6x\n", ObjectName(object), object, object && !NsfObjectIsClass(object), object->flags);*/ if (object && !NsfObjectIsClass(object) && !(object->flags & NSF_DESTROY_CALLED)) { DispatchDestroyMethod(interp, object, 0); } } /*fprintf(stderr, "===CALL destroy on CLASSES\n");*/ for (entryPtr = instances; entryPtr; entryPtr = entryPtr->nextPtr) { NsfClass *cl = entryPtr->clorobj; if (cl && !(cl->object.flags & NSF_DESTROY_CALLED)) { DispatchDestroyMethod(interp, (NsfObject *)cl, 0); } } /* now, turn of filters, all destroy callbacks are done */ RUNTIME_STATE(interp)->doFilters = 0; #ifdef DO_CLEANUP FreeAllNsfObjectsAndClasses(interp, &instances); # ifdef DO_FULL_CLEANUP DeleteProcsAndVars(interp, Tcl_GetGlobalNamespace(interp), withKeepvars); # endif #endif /* now free all objects systems with their root classes */ for (osPtr = RUNTIME_STATE(interp)->objectSystems; osPtr; osPtr = nPtr) { nPtr = osPtr->nextPtr; ObjectSystemFree(interp, osPtr); } #ifdef DO_CLEANUP /* finally, free all nsfprocs */ DeleteNsfProcs(interp, NULL); #endif CmdListFree(&instances, NULL); return TCL_OK; } /* *---------------------------------------------------------------------- * CallDirectly -- * * Determine when it is possible/necessary to call a method * implementation directly or via method dispatch. * * Results: * 1 is returned when command should be invoked directly, 0 * otherwise. * * Side effects: * methodObjPtr is set with the Tcl_Obj of the name of the method, * if there is one defined. * *---------------------------------------------------------------------- */ static int CallDirectly(Tcl_Interp *interp, NsfObject *object, int methodIdx, Tcl_Obj **methodObjPtr) { /* * We can/must call a C-implemented method directly, when * * a) the object system has no such appropriate method defined * * b) the script does not contain a method with the appropriate * name, and * * c) filters are not active on the object */ NsfObjectSystem *osPtr = GetObjectSystem(object); int callDirectly = 1; Tcl_Obj *methodObj; methodObj = osPtr->methods[methodIdx]; /*fprintf(stderr, "OS of %s is %s, method %s methodObj %p osPtr %p defined %.8x %.8x overloaded %.8x %.8x flags %.8x\n", ObjectName(object), ObjectName(&osPtr->rootClass->object), Nsf_SystemMethodOpts[methodIdx]+1, methodObj, osPtr, osPtr->definedMethods, osPtr->definedMethods & (1 << methodIdx), osPtr->overloadedMethods, osPtr->overloadedMethods & (1 << methodIdx), 1 << methodIdx );*/ if (methodObj) { int flag = 1 << methodIdx; if ((osPtr->overloadedMethods & flag) != 0) { /* overloaded, we must dispatch */ /*fprintf(stderr, "overloaded\n");*/ callDirectly = 0; } else if ((osPtr->definedMethods & flag) == 0) { /* not defined, we must call directly */ /*fprintf(stderr, "Warning: CallDirectly object %s idx %s not defined\n", ObjectName(object), Nsf_SystemMethodOpts[methodIdx]+1);*/ } else { #if DISPATCH_ALWAYS_DEFINED_METHODS callDirectly = 0; #else if (!(object->flags & NSF_FILTER_ORDER_VALID)) { FilterComputeDefined(interp, object); } /*fprintf(stderr, "CallDirectly object %s idx %s object flags %.6x %.6x \n", ObjectName(object), Nsf_SystemMethodOpts[methodIdx]+1, (object->flags & NSF_FILTER_ORDER_DEFINED_AND_VALID), NSF_FILTER_ORDER_DEFINED_AND_VALID);*/ if ((object->flags & NSF_FILTER_ORDER_DEFINED_AND_VALID) == NSF_FILTER_ORDER_DEFINED_AND_VALID) { /*fprintf(stderr, "CallDirectly object %s idx %s has filter \n", ObjectName(object), Nsf_SystemMethodOpts[methodIdx]+1);*/ callDirectly = 0; } #endif } } /*fprintf(stderr, "CallDirectly object %s idx %d returns %s => %d\n", ObjectName(object), methodIdx, methodObj ? ObjStr(methodObj) : "(null)", callDirectly);*/ /* return the methodObj in every case */ *methodObjPtr = methodObj; return callDirectly; } /* *---------------------------------------------------------------------- * NsfMethodObj -- * * Return the methodObj for a given method index. * * Results: * Returns Tcl_Obj* or NULL * * Side effects: * None. * *---------------------------------------------------------------------- */ Tcl_Obj * NsfMethodObj(NsfObject *object, int methodIdx) { NsfObjectSystem *osPtr = GetObjectSystem(object); /* fprintf(stderr, "NsfMethodObj object %s os %p idx %d %s methodObj %p\n", ObjectName(object), osPtr, methodIdx, Nsf_SystemMethodOpts[methodIdx]+1, osPtr->methods[methodIdx]); */ return osPtr->methods[methodIdx]; } /* * conditional memory allocations of optional storage */ static NsfObjectOpt * NsfRequireObjectOpt(NsfObject *object) { if (!object->opt) { object->opt = NEW(NsfObjectOpt); memset(object->opt, 0, sizeof(NsfObjectOpt)); } return object->opt; } static NsfClassOpt * NsfRequireClassOpt(/*@notnull@*/ NsfClass *cl) { assert(cl); if (!cl->opt) { cl->opt = NEW(NsfClassOpt); memset(cl->opt, 0, sizeof(NsfClassOpt)); if (cl->object.flags & NSF_IS_CLASS) { cl->opt->id = cl->object.id; /* probably a temporary solution */ } } return cl->opt; } static void MakeObjNamespace(Tcl_Interp *interp, NsfObject *object) { #ifdef NAMESPACE_TRACE fprintf(stderr, "+++ MakeObjNamespace for %s\n", ObjectName(object)); #endif if (!object->nsPtr) { Tcl_Namespace *nsPtr; nsPtr = object->nsPtr = NSGetFreshNamespace(interp, object, ObjectName(object)); assert(nsPtr); /* * Copy all obj variables to the newly created namespace */ if (object->varTablePtr) { Tcl_HashSearch search; Tcl_HashEntry *hPtr; TclVarHashTable *varTablePtr = Tcl_Namespace_varTablePtr(nsPtr); Tcl_HashTable *varHashTablePtr = TclVarHashTablePtr(varTablePtr); Tcl_HashTable *objHashTablePtr = TclVarHashTablePtr(object->varTablePtr); *varHashTablePtr = *objHashTablePtr; /* copy the table */ if (objHashTablePtr->buckets == objHashTablePtr->staticBuckets) { varHashTablePtr->buckets = varHashTablePtr->staticBuckets; } for (hPtr = Tcl_FirstHashEntry(varHashTablePtr, &search); hPtr; hPtr = Tcl_NextHashEntry(&search)) { hPtr->tablePtr = varHashTablePtr; } CallStackReplaceVarTableReferences(interp, object->varTablePtr, (TclVarHashTable *)varHashTablePtr); ckfree((char *) object->varTablePtr); object->varTablePtr = NULL; } } } static Tcl_Var CompiledLocalsLookup(CallFrame *varFramePtr, CONST char *varName) { int i, localCt = varFramePtr->numCompiledLocals; Tcl_Obj **objPtrPtr = &varFramePtr->localCachePtr->varName0; /* fprintf(stderr, ".. search #local vars %d for %s\n", localCt, varName);*/ for (i=0 ; icompiledLocals[i]; } } } return NULL; } /* *---------------------------------------------------------------------- * GetVarAndNameFromHash -- * * Conveniance function to obtain variable and name from * a variable hash entry * * Results: * Results are passed back in argument 2 and 3 * * Side effects: * None. * *---------------------------------------------------------------------- */ static void GetVarAndNameFromHash(Tcl_HashEntry *hPtr, Var **val, Tcl_Obj **varNameObj) { *val = TclVarHashGetValue(hPtr); *varNameObj = TclVarHashGetKey(*val); } /********************************************************* * * Variable resolvers * *********************************************************/ #define FOR_COLON_RESOLVER(ptr) (*(ptr) == ':' && *(ptr+1) != ':') /* *---------------------------------------------------------------------- * MethodName -- * * Return the methodName from a Tcl_Obj, strips potentially the * colon prefix * * Results: * method name * * Side effects: * None. * *---------------------------------------------------------------------- */ static CONST char * MethodName(Tcl_Obj *methodObj) { char *methodName; assert(methodObj); methodName = ObjStr(methodObj); if (FOR_COLON_RESOLVER(methodName)) { methodName ++; } return methodName; } CONST char * NsfMethodName(Tcl_Obj *methodObj) { return MethodName(methodObj); } /* *---------------------------------------------------------------------- * NsfMethodNamePath -- * * Compute the full method name for error messages containing the * ensemble root. * * Results: * Tcl_Obj, caller has to take care for ref-counting * * Side effects: * None. * *---------------------------------------------------------------------- */ Tcl_Obj * NsfMethodNamePath(Tcl_Interp *interp, Tcl_Obj *procObj) { Tcl_CallFrame *framePtr; NsfCallStackContent *cscPtr = CallStackGetTopFrame(interp, &framePtr); Tcl_Obj *resultObj; /* NsfShowStack(interp);*/ if (cscPtr && (cscPtr->flags & NSF_CSC_CALL_IS_ENSEMBLE)) { resultObj = Tcl_NewListObj(0, NULL); Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj(Tcl_GetCommandName(interp, cscPtr->cmdPtr), -1)); Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj(MethodName(procObj), -1)); } else { resultObj = Tcl_NewStringObj(MethodName(procObj), -1); } /* The following might be needed for deeper nested errors, but so far, it does not appear to be necessary. Just kept as a reminder here */ #if 0 if ((cscPtr->frameType & NSF_CSC_TYPE_ENSEMBLE)) { cscPtr = CallStackFindEnsembleCsc(framePtr, &framePtr); fprintf(stderr, "inside ensemble\n"); } #endif return resultObj; } /* *---------------------------------------------------------------------- * NsColonVarResolver -- * * Namespace resolver for namespace specific variable lookup. * colon prefix * * Results: * method name * * Side effects: * None. * *---------------------------------------------------------------------- */ static int NsColonVarResolver(Tcl_Interp *interp, CONST char *varName, Tcl_Namespace *UNUSED(nsPtr), int flags, Tcl_Var *varPtr) { Tcl_CallFrame *varFramePtr; TclVarHashTable *varTablePtr; NsfObject *object; int new, frameFlags; Tcl_Obj *key; #if defined (VAR_RESOLVER_TRACE) fprintf(stderr, "NsColonVarResolver '%s' flags %.6x\n", varName, flags); #endif /* * Case 1: The variable is to be resolved in global scope, proceed in * resolver chain */ if (unlikely(flags & TCL_GLOBAL_ONLY)) { /*fprintf(stderr, "global-scoped lookup for var '%s' in NS '%s'\n", varName, nsPtr->fullName);*/ return TCL_CONTINUE; } /* * Case 2: The lookup happens in a proc frame (lookup in compiled * locals and hash-table vars). We are not interested to handle * these cases here, so proceed in resolver chain. */ varFramePtr = (Tcl_CallFrame *)Tcl_Interp_varFramePtr(interp); assert(varFramePtr); frameFlags = Tcl_CallFrame_isProcCallFrame(varFramePtr); #if defined (VAR_RESOLVER_TRACE) fprintf(stderr, "NsColonVarResolver '%s' frame flags %.6x\n", varName, Tcl_CallFrame_isProcCallFrame(varFramePtr)); #endif if (frameFlags & FRAME_IS_PROC) { #if defined (VAR_RESOLVER_TRACE) fprintf(stderr, "...... forwarding to next resolver\n"); #endif /*fprintf(stderr, "proc-scoped var '%s' assumed, frame %p flags %.6x\n", name, varFramePtr, Tcl_CallFrame_isProcCallFrame(varFramePtr));*/ return TCL_CONTINUE; } /* * FRAME_IS_NSF_CMETHOD has always FRAME_IS_PROC set, so it is * handled already above */ assert((frameFlags & FRAME_IS_NSF_CMETHOD) == 0); if ((frameFlags & FRAME_IS_NSF_OBJECT) == 0) { /* * Case 3: we are not in an Next Scripting frame, so proceed as well */ return TCL_CONTINUE; } else { /* * Case 4: we are in an Next Scripting object frame */ if (*varName == ':') { if (*(varName+1) != ':') { /* * Case 4a: The variable name starts with a single ":". Skip * the char, but stay in the resolver. */ varName ++; } else { /* * Case 4b: Names starting with "::" are not for us */ return TCL_CONTINUE; } } else if (NSTail(varName) != varName) { /* * Case 4c: Names containing "::" are not for us */ return TCL_CONTINUE; } /* * Since we know that we are here always in an object frame, we * can blindly get the object from the client data . */ object = (NsfObject *)Tcl_CallFrame_clientData(varFramePtr); } /* * We have an object and create the variable if not found */ assert(object); varTablePtr = object->nsPtr ? Tcl_Namespace_varTablePtr(object->nsPtr) : object->varTablePtr; assert(varTablePtr); /* * Does the variable exist in the object's namespace? */ key = Tcl_NewStringObj(varName, -1); INCR_REF_COUNT(key); *varPtr = (Tcl_Var)VarHashCreateVar(varTablePtr, key, NULL); #if defined (VAR_RESOLVER_TRACE) fprintf(stderr, "...... lookup of '%s' for object '%s' returns %p\n", varName, ObjectName(object), *varPtr); #endif if (*varPtr == NULL) { /* * We failed to find the variable so far, therefore we create it * in this var table. Note that in several cases above, * TCL_CONTINUE takes care for variable creation. */ Var *newVar = VarHashCreateVar(varTablePtr, key, &new); *varPtr = (Tcl_Var)newVar; } DECR_REF_COUNT(key); return *varPtr ? TCL_OK : TCL_ERROR; } /********************************************************* * * Begin of compiled var resolver * *********************************************************/ typedef struct NsfResolvedVarInfo { Tcl_ResolvedVarInfo vInfo; /* This must be the first element. */ NsfObject *lastObject; Tcl_Var var; Tcl_Obj *nameObj; } NsfResolvedVarInfo; /* *---------------------------------------------------------------------- * HashVarFree -- * * Free hashed variables based on refCount. * * Results: * None. * * Side effects: * Changed refCount or freed variable. * *---------------------------------------------------------------------- */ NSF_INLINE static void HashVarFree(Tcl_Var var) { if (unlikely(VarHashRefCount(var) < 2)) { /*fprintf(stderr,"#### free %p\n", var);*/ ckfree((char *) var); } else { VarHashRefCount(var)--; } } /* *---------------------------------------------------------------------- * CompiledColonVarFetch -- * * This function is the actual variable resolution handler for a * colon-prefixed (":/varName/") found in a compiled script * registered by the compiling var resolver (see * InterpCompiledColonResolver()). When initializing a call frame, * this handler is called, crawls the object's var table (creating * a variable, if needed), and returns a Var structure. Based on * this, a link variable ":/varName/" pointing to this object * variable (i.e., "varName") is created and is stored in the * compiled locals array of the call frame. Beware that these link * variables interact with the family of link-creating commands * ([variable], [global], [upvar]) by being subject to * "retargeting" upon name conflicts (see * tests/varresolutiontest.tcl for some examples). * * Results: * Tcl_Var containing value or NULL. * * Side effects: * Updates of Variable structure cache in necessary. * *---------------------------------------------------------------------- */ static Tcl_Var CompiledColonVarFetch(Tcl_Interp *interp, Tcl_ResolvedVarInfo *vinfoPtr) { NsfResolvedVarInfo *resVarInfo = (NsfResolvedVarInfo *)vinfoPtr; NsfCallStackContent *cscPtr = CallStackGetTopFrame0(interp); NsfObject *object; TclVarHashTable *varTablePtr; Tcl_Var var = resVarInfo->var; int new; #if defined(VAR_RESOLVER_TRACE) int flags = var ? ((Var *)var)->flags : 0; fprintf(stderr,"CompiledColonVarFetch var '%s' var %p flags = %.4x dead? %.4x\n", ObjStr(resVarInfo->nameObj), var, flags, flags & VAR_DEAD_HASH); #endif if (likely(cscPtr != NULL)) { object = cscPtr->self; } else { object = NULL; } /* * We cache lookups based on nsf objects; we have to care about * cases, where the instance variables are in some delete states. * */ if ((var && object == resVarInfo->lastObject && (((((Var *)var)->flags) & VAR_DEAD_HASH)) == 0)) { /* * The variable is valid. */ #if defined(VAR_RESOLVER_TRACE) fprintf(stderr, ".... cached var '%s' var %p flags = %.4x\n", ObjStr(resVarInfo->nameObj), var, ((Var *)var)->flags); #endif return var; } if (unlikely(!object)) { return NULL; } if (var) { /* * The variable is not valid anymore. Clean it up. */ HashVarFree(var); } if (object->nsPtr) { varTablePtr = Tcl_Namespace_varTablePtr(object->nsPtr); } else if (object->varTablePtr) { varTablePtr = object->varTablePtr; } else { /* * In most situations, we have a varTablePtr through the clauses * above. However, if someone redefines e.g. the method "configure" or * "objectparameter", we might find an object with an still empty * varTable, since these are lazy initiated. */ varTablePtr = object->varTablePtr = VarHashTableCreate(); } assert(varTablePtr); resVarInfo->lastObject = object; #if defined(VAR_RESOLVER_TRACE) fprintf(stderr,"Fetch var %s in object %s\n", TclGetString(resVarInfo->nameObj), ObjectName(object)); #endif resVarInfo->var = var = (Tcl_Var) VarHashCreateVar(varTablePtr, resVarInfo->nameObj, &new); /* * Increment the reference counter to avoid ckfree() of the variable * in Tcl's FreeVarEntry(); for cleanup, we provide our own * HashVarFree(); */ VarHashRefCount(var)++; #if defined(VAR_RESOLVER_TRACE) { Var *v = (Var *)(resVarInfo->var); fprintf(stderr, ".... looked up existing var %s var %p flags = %.6x undefined %d\n", ObjStr(resVarInfo->nameObj), v, v->flags, TclIsVarUndefined(v)); } #endif return var; } /* *---------------------------------------------------------------------- * CompiledColonVarFree -- * * DeleteProc of the compiled variable handler. * * Results: * None. * * Side effects: * Free compiled variable structure and variable. * *---------------------------------------------------------------------- */ static void CompiledColonVarFree(Tcl_ResolvedVarInfo *vInfoPtr) { NsfResolvedVarInfo *resVarInfo = (NsfResolvedVarInfo *)vInfoPtr; #if defined(VAR_RESOLVER_TRACE) fprintf(stderr, "CompiledColonVarFree %p for variable '%s'\n", resVarInfo, ObjStr(resVarInfo->nameObj)); #endif DECR_REF_COUNT(resVarInfo->nameObj); if (resVarInfo->var) {HashVarFree(resVarInfo->var);} FREE(NsfResolvedVarInfo, vInfoPtr); } /* *---------------------------------------------------------------------- * InterpCompiledColonVarResolver -- * * For colon-prefixed (":/varName/") variables, we provide our own * var resolver for compiling scripts and evaluating compiled * scripts (e.g., proc bodies). At the time of first compilation * (or re-compilation), this resolver is processed (see * tclProc.c:InitResolvedLocals()). It registers two handlers for a * given, colon-prefixed variable found in the script: the actual * variable fetcher and a variable cleanup handler. The variable * fetcher is executed whenever a Tcl call frame is initialized and * the array of compiled locals is constructed (see also * InitResolvedLocals()). * * The Tcl var resolver protocol dictates that per-namespace * compiling var resolvers take precedence over this per-interp * compiling var resolver. That is, per-namespace resolvers are * processed first and can effectively outrule per-interp * resolvers by signaling TCL_OK or TCL_BREAK. * * Results: * TCL_OK or TCL_CONTINUE (according to Tcl's var resolver protocol) * * Side effects: * Registers per-variable resolution and cleanup handlers. * *---------------------------------------------------------------------- */ static int InterpCompiledColonVarResolver(Tcl_Interp *interp, CONST84 char *name, int length, Tcl_Namespace *UNUSED(context), Tcl_ResolvedVarInfo **rPtr) { /* * The variable handler is registered, when we have an active Next Scripting * object and the variable starts with the appropriate prefix. Note * that getting the "self" object is a weak protection against * handling of wrong vars */ NsfObject *object = GetSelfObj(interp); #if defined(VAR_RESOLVER_TRACE) fprintf(stderr, "compiled var resolver for %s, obj %p\n", name, object); #endif if (object && FOR_COLON_RESOLVER(name)) { NsfResolvedVarInfo *resVarInfo = NEW(NsfResolvedVarInfo); resVarInfo->vInfo.fetchProc = CompiledColonVarFetch; resVarInfo->vInfo.deleteProc = CompiledColonVarFree; /* if NULL, Tcl does a ckfree on proc clean up */ resVarInfo->lastObject = NULL; resVarInfo->var = NULL; resVarInfo->nameObj = Tcl_NewStringObj(name+1, length-1); INCR_REF_COUNT(resVarInfo->nameObj); #if defined(VAR_RESOLVER_TRACE) fprintf(stderr, "... resVarInfo %p nameObj %p '%s' obj %p %s\n", resVarInfo, resVarInfo->nameObj, ObjStr(resVarInfo->nameObj), object, ObjectName(object)); #endif *rPtr = (Tcl_ResolvedVarInfo *)resVarInfo; return TCL_OK; } return TCL_CONTINUE; } /* *---------------------------------------------------------------------- * InterpGetFrameAndFlags -- * * Return for the provided interp the flags of the frame (returned as * result) and the actual varFrame (returned in the second argument). In * case, the toplevel frame is a LAMBDA frame, skip it. * * Results: * Frame flags, varFrame * * Side effects: * None. * *---------------------------------------------------------------------- */ NSF_INLINE static int InterpGetFrameAndFlags(Tcl_Interp *interp, CallFrame **framePtr) { int frameFlags; assert(framePtr); *framePtr = Tcl_Interp_varFramePtr(interp); frameFlags = Tcl_CallFrame_isProcCallFrame(*framePtr); /* * If the resolver is called from a lambda frame, use always the parent frame */ if ((frameFlags & FRAME_IS_LAMBDA)) { *framePtr = (CallFrame *)Tcl_CallFrame_callerPtr(*framePtr); frameFlags = Tcl_CallFrame_isProcCallFrame(*framePtr); #if defined(VAR_RESOLVER_TRACE) fprintf(stderr, "InterpColonVarResolver skip lambda frame flags %.6x\n", Tcl_CallFrame_isProcCallFrame(*framePtr)); #endif } #if defined(VAR_RESOLVER_TRACE) fprintf(stderr, "... final frame flags %.6x\n",frameFlags); #endif return frameFlags; } /* *---------------------------------------------------------------------- * InterpColonVarResolver -- * * For accessing object (instance) variables using the colon-prefix * notation (":/varName/"), we provide our own var resolvers. This * function is the non-compiling var resolver; its services are * requested in two situations: a) when evaluating non-compiled * statements, b) when executing slow-path bytecode instructions, * with "slow path" referring to bytecode instructions not making * use of the compiled locals array (and, e.g., reverting to * TclObjLookupVar*() calls). * * The Tcl var resolver protocol dictates that per-namespace, * non-compiling var resolvers take precedence over this per-interp * non-compiling var resolver. That is, per-namespace resolvers are * processed first and can effectively outrule per-interp resolvers * by signaling TCL_OK or TCL_BREAK. See * e.g. TclLookupSimpleVar(). * * Results: * TCL_OK or TCL_CONTINUE (according to on Tcl's var resolver protocol) * * Side effects: * If successful, return varPtr, pointing to instance variable. * *---------------------------------------------------------------------- */ static int InterpColonVarResolver(Tcl_Interp *interp, CONST char *varName, Tcl_Namespace *UNUSED(nsPtr), int flags, Tcl_Var *varPtr) { int new, frameFlags; CallFrame *varFramePtr; TclVarHashTable *varTablePtr; NsfObject *object; Tcl_Obj *keyObj; Tcl_Var var; /* * TCL_GLOBAL_ONLY is removed, since "vwait :varName" is called with * with this flag. */ if (!FOR_COLON_RESOLVER(varName) || (flags & (/*TCL_GLOBAL_ONLY|*/TCL_NAMESPACE_ONLY))) { /* ordinary names and global lookups are not for us */ #if defined(VAR_RESOLVER_TRACE) fprintf(stderr, "InterpColonVarResolver '%s' flags %.6x not for us\n", varName, flags); #endif return TCL_CONTINUE; } frameFlags = InterpGetFrameAndFlags(interp, &varFramePtr); if (likely(frameFlags & FRAME_IS_NSF_METHOD)) { if ((*varPtr = CompiledLocalsLookup(varFramePtr, varName))) { /* * This section is reached under notable circumstances and represents a * point of interaction between our resolvers for non-compiled (i.e., * InterpColonVarResolver()) and compiled script execution (i.e., * InterpCompiledColonVarResolver()). * * Expect this branch to be hit iff... * * 1. ... InterpCompiledColonVarResolver() is called from within the Tcl * bytecode interpreter when executing a bytecode-compiled script on a * *slow path* (i.e., involving a TclObjLookupVarEx() call) * * 2. ... the act of variable resolution (i.e., TclObjLookupVarEx()) has * not been restricted to the global (TCL_GLOBAL_ONLY) or an effective * namespace (TCL_NAMESPACE_ONLY) * * 3. ..., resulting from the fact of participating in an bytecode * interpretation, CompiledColonVarFetch() stored a link variable * (pointing to the actual/real object variable, whether defined or not) * under the given varName value into the current call frame's array of * compiled locals (when initializing the call frame; see * tclProc.c:InitResolvedLocals()). */ #if defined(VAR_RESOLVER_TRACE) fprintf(stderr, ".... found local %s varPtr %p flags %.6x\n", varName, *varPtr, flags); #endif /* * By looking up the compiled-local directly and signaling TCL_OK, we * optimise a little by avoiding further lookups down the Tcl var * resolution infrastructure. Note that signaling TCL_CONTINUE would * work too, however, it would involve extra resolution overhead. */ return TCL_OK; } object = ((NsfCallStackContent *)varFramePtr->clientData)->self; } else if (frameFlags & FRAME_IS_NSF_CMETHOD) { object = ((NsfCallStackContent *)varFramePtr->clientData)->self; } else if (frameFlags & FRAME_IS_NSF_OBJECT) { object = (NsfObject *)(varFramePtr->clientData); } else { #if defined(VAR_RESOLVER_TRACE) fprintf(stderr, ".... not found %s\n", varName); #endif return TCL_CONTINUE; } /* * Trim the varName for the colon prefix (":"). */ varName ++; /* * We have an object and create the variable if not found */ assert(object); if (unlikely(object->nsPtr != NULL)) { varTablePtr = Tcl_Namespace_varTablePtr(object->nsPtr); } else if (likely(object->varTablePtr != NULL)) { varTablePtr = object->varTablePtr; } else { /* * In most situations, we have a varTablePtr through the clauses * above. However, if someone redefines e.g. the method "configure" or * "objectparameter", we might find an object with an still empty * varTable, since these are lazy initiated. */ varTablePtr = object->varTablePtr = VarHashTableCreate(); } assert(varTablePtr); /*fprintf(stderr, "Object Var Resolver, name=%s, obj %p, nsPtr %p, varTablePtr %p\n", varName, object, object->nsPtr, varTablePtr);*/ keyObj = Tcl_NewStringObj(varName, -1); INCR_REF_COUNT(keyObj); var = (Tcl_Var)VarHashCreateVar(varTablePtr, keyObj, NULL); if (likely(var != NULL)) { #if defined(VAR_RESOLVER_TRACE) fprintf(stderr, ".... found in hash-table %s %p flags %.6x ns %p\n", varName, var, ((Var *)var)->flags, object->nsPtr); #endif /* make coverage analysis easier */ assert(1); } else { /* * We failed to find the variable, therefore we create it new */ var = (Tcl_Var)VarHashCreateVar(varTablePtr, keyObj, &new); #if defined(VAR_RESOLVER_TRACE) fprintf(stderr, ".... var %p %s created in hash-table %p\n", var, varName, varTablePtr); #endif } *varPtr = var; DECR_REF_COUNT(keyObj); return TCL_OK; } /********************************************************* * * End of var resolvers * *********************************************************/ /********************************************************* * * Begin of cmd resolver * *********************************************************/ /* *---------------------------------------------------------------------- * InterpColonCmdResolver -- * * Resolve command names. If the command starts with the Next * Scripting specific prefix and we are on an Next Scripting stack * frame, treat command as OO method. * * Results: * TCL_OK or TCL_CONTINUE (based on Tcl's command resolver protocol) * * Side effects: * If successful, return cmdPtr, pointing to method. * *---------------------------------------------------------------------- */ static int InterpColonCmdResolver(Tcl_Interp *interp, CONST char *cmdName, Tcl_Namespace *UNUSED(nsPtr), int flags, Tcl_Command *cmdPtr) { CallFrame *varFramePtr; int frameFlags; /* fprintf(stderr, "InterpColonCmdResolver %s flags %.6x\n", cmdName, flags); */ if (likely((*cmdName == ':' && *(cmdName + 1) == ':') || flags & TCL_GLOBAL_ONLY)) { /* fully qualified names and global lookups are not for us */ /*fprintf(stderr, "... not for us %s flags %.6x\n", cmdName, flags);*/ return TCL_CONTINUE; } frameFlags = InterpGetFrameAndFlags(interp, &varFramePtr); /* * The resolver is called as well, when a body of a method is * compiled. In these situations, Tcl stacks a non-proc frame, that * we have to skip. In order to safely identify such situations, we * stuff into the call flags of the proc frame during the * compilation step NSF_CSC_CALL_IS_COMPILE. */ if (frameFlags == 0 && Tcl_CallFrame_callerPtr(varFramePtr)) { varFramePtr = (CallFrame *)Tcl_CallFrame_callerPtr(varFramePtr); frameFlags = Tcl_CallFrame_isProcCallFrame(varFramePtr); if ((frameFlags & (FRAME_IS_NSF_METHOD)) == 0 || (((NsfCallStackContent *)varFramePtr->clientData)->flags & NSF_CSC_CALL_IS_COMPILE) == 0 ) { frameFlags = 0; } else { #if defined(CMD_RESOLVER_TRACE) fprintf(stderr, "InterpColonCmdResolver got parent frame cmdName %s flags %.6x, frame flags %.6x\n", cmdName, flags, Tcl_CallFrame_isProcCallFrame(varFramePtr)); #endif } } #if defined(CMD_RESOLVER_TRACE) fprintf(stderr, "InterpColonCmdResolver cmdName %s flags %.6x, frame flags %.6x\n", cmdName, flags, frameFlags); #endif if (frameFlags & (FRAME_IS_NSF_METHOD|FRAME_IS_NSF_OBJECT|FRAME_IS_NSF_CMETHOD )) { if (*cmdName == ':') { #if defined(CMD_RESOLVER_TRACE) fprintf(stderr, " ... call colonCmd for %s\n", cmdName); #endif /* * We have a cmd starting with ':', we are in an nsf frame, so * forward to the colonCmd. */ *cmdPtr = RUNTIME_STATE(interp)->colonCmd; return TCL_OK; } else { #if defined(NSF_WITH_OS_RESOLVER) /* * Experimental Object-System specific resolver: If an * un-prefixed method name is found in a body of a method, we try * to perform a lookup for this method in the namespace of the * object system for the current object. If this lookup is not * successful the standard lookups are performed. The * object-system specific resolver allows to use the "right" * (un-prefixed) "self" or "next" calls without namespace * imports. */ NsfObject *object; NsfObjectSystem *osPtr; if (frameFlags & (FRAME_IS_NSF_METHOD|FRAME_IS_NSF_CMETHOD)) { object = ((NsfCallStackContent *)varFramePtr->clientData)->self; } else if (frameFlags & (FRAME_IS_NSF_OBJECT)) { object = (NsfObject *)(varFramePtr->clientData); } else { object = NULL; } if (object) { Tcl_HashEntry *entryPtr; Tcl_HashTable *cmdTablePtr; Tcl_Command cmd; osPtr = GetObjectSystem(object); cmd = osPtr->rootClass->object.id; cmdTablePtr = Tcl_Namespace_cmdTablePtr(((Command *)cmd)->nsPtr); entryPtr = Tcl_CreateHashEntry(cmdTablePtr, cmdName, NULL); /*fprintf(stderr, "InterpColonCmdResolver OS specific resolver tried to lookup %s for os %s in ns %s\n", cmdName, ClassName(osPtr->rootClass), ((Command *)cmd)->nsPtr->fullName);*/ if (entryPtr) { /*fprintf(stderr, "InterpColonCmdResolver OS specific resolver found %s::%s\n", ((Command *)cmd)->nsPtr->fullName, cmdName);*/ *cmdPtr = Tcl_GetHashValue(entryPtr); return TCL_OK; } } #endif } } #if defined(CMD_RESOLVER_TRACE) fprintf(stderr, " ... not found %s\n", cmdName); NsfShowStack(interp); #endif return TCL_CONTINUE; } /********************************************************* * * End of cmd resolver * *********************************************************/ /* *---------------------------------------------------------------------- * NsfNamespaceInit -- * * Initialize a provided namespace by setting its resolvers and * namespace path * * Results: * none * * Side effects: * change ns behavior * *---------------------------------------------------------------------- */ static void NsfNamespaceInit(Tcl_Namespace *nsPtr) { assert(nsPtr); /* * This puts a per-object namespace resolver into position upon * acquiring the namespace. Works for object-scoped commands/procs * and object-only ones (set, unset, ...) */ Tcl_SetNamespaceResolvers(nsPtr, (Tcl_ResolveCmdProc *)NULL, NsColonVarResolver, (Tcl_ResolveCompiledVarProc *)NULL); #if defined(NSF_WITH_INHERIT_NAMESPACES) /* * In case there is a namespace path set for the parent namespace, * apply this as well to the object namespace to avoid surprises * with "namespace path nx". */ { Namespace *parentNsPtr = Tcl_Namespace_parentPtr(nsPtr); int pathLength = Tcl_Namespace_commandPathLength(parentNsPtr); if (pathLength>0) { Namespace **pathArray = (Namespace **)ckalloc(sizeof(Namespace *) * pathLength); NamespacePathEntry *tmpPathArray = Tcl_Namespace_commandPathArray(parentNsPtr); int i; for (i=0; ifullName, nsPtr->deleteProc == NSNamespaceDeleteProc);*/ /* * Check, if this already a namespace handled by NSF */ if (nsPtr->deleteProc == NSNamespaceDeleteProc && nsPtr->clientData) { NsfObject *parentObject = (NsfObject *) nsPtr->clientData; /* * Make global lookups when the parent is a slotcontainer */ /* parentObject = (NsfObject *) GetObjectFromString(interp, nsPtr->fullName);*/ if ((parentObject->flags & NSF_IS_SLOT_CONTAINER)) { Tcl_Command cmd = Tcl_FindCommand(interp, cmdName, NULL, TCL_GLOBAL_ONLY); if (cmd) { *cmdPtr = cmd; return TCL_OK; } } } return TCL_CONTINUE; } /* *---------------------------------------------------------------------- * RequireObjNamespace -- * * Obtain for an object a namespace if necessary and initialize it. * In this function, variables existing outside of the namespace * get copied over to thew fresh namespace. * * Results: * Tcl_Namespace * * Side effects: * Allocate pot. a namespace * *---------------------------------------------------------------------- */ static Tcl_Namespace * RequireObjNamespace(Tcl_Interp *interp, NsfObject *object) { if (!object->nsPtr) { MakeObjNamespace(interp, object); NsfNamespaceInit(object->nsPtr); } assert(object->nsPtr); return object->nsPtr; } /* * Namespace related commands */ /* *---------------------------------------------------------------------- * NSNamespacePreserve -- * * Increment namespace refCount * * Results: * void * * Side effects: * None. * *---------------------------------------------------------------------- */ static void NSNamespacePreserve(Tcl_Namespace *nsPtr) { assert(nsPtr); MEM_COUNT_ALLOC("NSNamespace", nsPtr); Tcl_Namespace_refCount(nsPtr)++; } /* *---------------------------------------------------------------------- * NSNamespaceRelease -- * * Decrement namespace refCount and free namespace if necessary * * Results: * void * * Side effects: * Free pot. memory * *---------------------------------------------------------------------- */ static void NSNamespaceRelease(Tcl_Namespace *nsPtr) { assert(nsPtr); MEM_COUNT_FREE("NSNamespace", nsPtr); Tcl_Namespace_refCount(nsPtr)--; if (unlikely(Tcl_Namespace_refCount(nsPtr) == 0 && (Tcl_Namespace_flags(nsPtr) & NS_DEAD))) { /* * The namespace refCount has reached 0, we have to free * it. unfortunately, NamespaceFree() is not exported */ /*fprintf(stderr, "HAVE TO FREE namespace %p\n", nsPtr); */ /*NamespaceFree(nsPtr);*/ ckfree(nsPtr->fullName); ckfree(nsPtr->name); ckfree((char *)nsPtr); } } /* *---------------------------------------------------------------------- * NSDeleteCmd -- * * Delete the Tcl command for the provided methodName located in * the provided namespace. * * Results: * Tcl result or -1, if no such method exists int. * * Side effects: * Command is deleted. * *---------------------------------------------------------------------- */ static int NSDeleteCmd(Tcl_Interp *interp, Tcl_Namespace *nsPtr, CONST char *methodName) { Tcl_Command token; assert(nsPtr); if ((token = FindMethod(nsPtr, methodName))) { return Tcl_DeleteCommandFromToken(interp, token); } return -1; } /* *---------------------------------------------------------------------- * NSDeleteChild -- * * Delete a child of an object in cases, when the parent object is * deleted. It is designed to delete either objects or classes to * be a little bit more graceful on destuctors. Not perfect yet. * * Results: * None. * * Side effects: * Might destroy an object. * *---------------------------------------------------------------------- */ static int NSDeleteChild(Tcl_Interp *interp, Tcl_Command cmd, int deleteObjectsOnly) { /*fprintf(stderr, "NSDeleteChildren child %p flags %.6x epoch %d\n", cmd, Tcl_Command_flags(cmd), Tcl_Command_cmdEpoch(cmd));*/ /* * In some situations (e.g. small buckets, less than 12 entries), we * get from the cmd-table already deleted cmds; we had previously an * assert(Tcl_Command_cmdEpoch(cmd) == 0); * which will fail in such cases. */ if (!Tcl_Command_cmdEpoch(cmd)) { NsfObject *object = NsfGetObjectFromCmdPtr(cmd); /*fprintf(stderr, "NSDeleteChildren child %p (%s) epoch %d\n", cmd, Tcl_GetCommandName(interp, cmd), Tcl_Command_cmdEpoch(cmd));*/ if (object == NULL) { /* * This is just a plain Tcl command; let Tcl handle the * deletion. */ return 0; } /*fprintf(stderr, "NSDeleteChild check %p %s true child %d\n", object, ObjectName(object), object->id == cmd);*/ /* delete here just true children */ if (object->id == cmd) { if (deleteObjectsOnly && NsfObjectIsClass(object)) { return 0; } /*fprintf(stderr, "NSDeleteChild destroy %p %s\n", object, ObjectName(object));*/ /* in the exit handler physical destroy --> directly call destroy */ if (RUNTIME_STATE(interp)->exitHandlerDestroyRound == NSF_EXITHANDLER_ON_PHYSICAL_DESTROY) { PrimitiveDestroy(object); return 1; } else { if (object->teardown && !(object->flags & NSF_DESTROY_CALLED)) { int result = DispatchDestroyMethod(interp, object, 0); if (unlikely(result != TCL_OK)) { /* * The destroy method failed. However, we have to remove * the command anyway, since its parent is currently being * deleted. */ if (object->teardown) { NsfLog(interp, NSF_LOG_NOTICE, "Destroy failed for object %s, perform low level deletion", ObjectName(object)); CallStackDestroyObject(interp, object); } } return 1; } } } else { /*fprintf(stderr, "NSDeleteChild remove alias %p %s\n", object, Tcl_GetCommandName(interp, cmd));*/ return AliasDeleteObjectReference(interp, cmd); } } return 0; } /* *---------------------------------------------------------------------- * NSDeleteChildren -- * * Delete the child objects of a namespace. * * Results: * None. * * Side effects: * Might destroy child objects. * *---------------------------------------------------------------------- */ static void NSDeleteChildren(Tcl_Interp *interp, Tcl_Namespace *nsPtr) { Tcl_HashTable *cmdTablePtr = Tcl_Namespace_cmdTablePtr(nsPtr); Tcl_HashSearch hSrch; Tcl_HashEntry *hPtr; int expected; #ifdef OBJDELETION_TRACE fprintf(stderr, "NSDeleteChildren %p %s activationCount %d\n", nsPtr, nsPtr->fullName, Tcl_Namespace_activationCount(nsPtr)); #endif /* * First, get rid of namespace imported objects; don't delete the * object, but the reference. */ Tcl_ForgetImport(interp, nsPtr, "*"); /* don't destroy namespace imported objects */ #if OBJDELETION_TRACE /* * Deletion is always tricky. Show, what elements should be deleted * in this loop. The actually deleted elements might be actually * less, if a deletion of one item triggers the destroy of another * item. */ for (hPtr = Tcl_FirstHashEntry(cmdTablePtr, &hSrch); hPtr; hPtr = Tcl_NextHashEntry(&hSrch)) { Tcl_Command cmd = (Tcl_Command)Tcl_GetHashValue(hPtr); fprintf(stderr, "will destroy %p %s\n", cmd, Tcl_GetCommandName(interp, cmd)); } #endif /* * Second, delete the objects. */ /* * A destroy of one element of the hash-table can trigger the * destroy of another item of the same table. Therefore we use * Nsf_NextHashEntry(), which handles this case. */ for (hPtr = Tcl_FirstHashEntry(cmdTablePtr, &hSrch); hPtr; hPtr = Nsf_NextHashEntry(cmdTablePtr, expected, &hSrch)) { /*Tcl_Command cmd = (Tcl_Command)Tcl_GetHashValue(hPtr); fprintf(stderr, "NSDeleteChild %p table %p numEntries before %d\n", cmd, hPtr->tablePtr, cmdTablePtr->numEntries );*/ expected = cmdTablePtr->numEntries - NSDeleteChild(interp, (Tcl_Command)Tcl_GetHashValue(hPtr), 1); } /* * Finally, delete the classes. */ for (hPtr = Tcl_FirstHashEntry(cmdTablePtr, &hSrch); hPtr; hPtr = Nsf_NextHashEntry(cmdTablePtr, expected, &hSrch)) { expected = cmdTablePtr->numEntries - NSDeleteChild(interp, (Tcl_Command)Tcl_GetHashValue(hPtr), 0); } } /* * delete all vars & procs in a namespace */ static void NSCleanupNamespace(Tcl_Interp *interp, Tcl_Namespace *nsPtr) { TclVarHashTable *varTablePtr = Tcl_Namespace_varTablePtr(nsPtr); Tcl_HashTable *cmdTablePtr = Tcl_Namespace_cmdTablePtr(nsPtr); Tcl_HashSearch hSrch; Tcl_HashEntry *hPtr; #ifdef OBJDELETION_TRACE fprintf(stderr, "NSCleanupNamespace %p flags %.6x\n", nsPtr, Tcl_Namespace_flags(nsPtr)); fprintf(stderr, "NSCleanupNamespace %p %.6x varTablePtr %p\n", nsPtr, ((Namespace *)nsPtr)->flags, varTablePtr); #endif /* * Delete all variables and initialize var table again * (DeleteVars frees the var-table) */ TclDeleteVars((Interp *)interp, varTablePtr); TclInitVarHashTable(varTablePtr, (Namespace *)nsPtr); /* * Delete all user-defined procs in the namespace */ for (hPtr = Tcl_FirstHashEntry(cmdTablePtr, &hSrch); hPtr; hPtr = Tcl_NextHashEntry(&hSrch)) { Tcl_Command cmd = (Tcl_Command) Tcl_GetHashValue(hPtr); if (CmdIsNsfObject(cmd)) { /* * Sub-objects should not be deleted here to preserve children * deletion order. Just delete aliases. */ AliasDeleteObjectReference(interp, cmd); continue; } /*fprintf(stderr, "NSCleanupNamespace calls DeleteCommandFromToken for %p flags %.6x\n", cmd, ((Command *)cmd)->flags); fprintf(stderr, " cmd = %s\n", Tcl_GetCommandName(interp, cmd)); fprintf(stderr, " nsPtr = %p\n", ((Command *)cmd)->nsPtr); fprintf(stderr, " epoch = %d\n", Tcl_Command_cmdEpoch(cmd)); fprintf(stderr, " refCount = %d\n", Tcl_Command_refCount(cmd)); fprintf(stderr, " flags %.6x\n", ((Namespace *)((Command *)cmd)->nsPtr)->flags);*/ Tcl_DeleteCommandFromToken(interp, cmd); } } static void NSNamespaceDeleteProc(ClientData clientData) { #ifdef NSF_MEM_COUNT NsfNamespaceClientData *nsClientData = (NsfNamespaceClientData *)clientData; NsfObject *object; assert(clientData); /*fprintf(stderr, "NSNamespaceDeleteProc cd %p\n", clientData); fprintf(stderr, "... nsPtr %p name '%s'\n", nsClientData->nsPtr, nsClientData->nsPtr->fullName);*/ object = nsClientData->object; ckfree((char *)nsClientData); #else NsfObject *object = (NsfObject *) clientData; #endif assert(object); /*fprintf(stderr, "namespace delete-proc obj=%p ns=%p\n", clientData, object ? object->nsPtr : NULL);*/ MEM_COUNT_FREE("NSNamespace", object->nsPtr); object->nsPtr = NULL; } void Nsf_DeleteNamespace(Tcl_Interp *interp, Tcl_Namespace *nsPtr) { int activationCount = 0; Tcl_CallFrame *f = (Tcl_CallFrame *)Tcl_Interp_framePtr(interp); /*fprintf(stderr, "Nsf_DeleteNamespace %p ", nsPtr);*/ while (f) { if (f->nsPtr == nsPtr) { activationCount++; } f = Tcl_CallFrame_callerPtr(f); } #if !defined(NDEBUG) if (Tcl_Namespace_activationCount(nsPtr) != activationCount) { fprintf(stderr, "WE HAVE TO FIX ACTIVATIONCOUNT\n"); Tcl_Namespace_activationCount(nsPtr) = activationCount; } #endif assert(Tcl_Namespace_activationCount(nsPtr) == activationCount); /*fprintf(stderr, "to %d. \n", ((Namespace *)nsPtr)->activationCount);*/ if (Tcl_Namespace_deleteProc(nsPtr)) { /*fprintf(stderr, "calling deteteNamespace %s\n", nsPtr->fullName);*/ Tcl_DeleteNamespace(nsPtr); } } /* *---------------------------------------------------------------------- * NSCheckColons -- * * Check the provided colons in an object name. If the name is * valid, the function returns 1, otherwise 0. * * Results: * returns 1 on success * * Side effects: * none * *---------------------------------------------------------------------- */ NSF_INLINE static int NSCheckColons(CONST char *name, size_t l) { register CONST char *n = name; if (*n == '\0') return 0; /* empty name */ if (l == 0) l = strlen(name); if (*(n+l-1) == ':') return 0; /* name ends with : */ if (*n == ':' && *(n+1) != ':') return 0; /* name begins with single : */ for (; *n != '\0'; n++) { if (*n == ':' && *(n+1) == ':' && *(n+2) == ':') { return 0; /* more than 2 colons in series in a name */ } } return 1; } /* *---------------------------------------------------------------------- * NSGetFreshNamespace -- * * Create an object namespace, provide a deleteProc (avoid * interference between object and namespace deletion order) and * keep the object as client data. * * Results: * Tcl_Namespace * * Side effects: * might allocate a namespace * *---------------------------------------------------------------------- */ static Tcl_Namespace* NSGetFreshNamespace(Tcl_Interp *interp, NsfObject *object, CONST char *name) { Namespace *dummy1Ptr, *dummy2Ptr, *nsPtr; const char *dummy; TclGetNamespaceForQualName(interp, name, NULL, TCL_FIND_ONLY_NS|TCL_CREATE_NS_IF_UNKNOWN, &nsPtr, &dummy1Ptr, &dummy2Ptr, &dummy); if (nsPtr->deleteProc != NSNamespaceDeleteProc) { /* * Avoid hijacking a namespace with different client data */ if (nsPtr->deleteProc || nsPtr->clientData) { Tcl_Panic("Namespace '%s' exists already with delProc %p and clientData %p; " "Can only convert a plain Tcl namespace into an nsf namespace, my delete Proc %p", name, nsPtr->deleteProc, nsPtr->clientData, NSNamespaceDeleteProc); } { #ifdef NSF_MEM_COUNT NsfNamespaceClientData *nsClientData = (NsfNamespaceClientData *)ckalloc(sizeof(NsfNamespaceClientData)); nsClientData->object = object; nsClientData->nsPtr = (Tcl_Namespace *)nsPtr; nsPtr->clientData = nsClientData; /*fprintf(stderr, "Adding NsfNamespaceClientData nsPtr %p cd %p name '%s'\n", nsPtr, nsClientData, nsPtr->fullName);*/ #else nsPtr->clientData = object; #endif nsPtr->deleteProc = (Tcl_NamespaceDeleteProc *)NSNamespaceDeleteProc; } MEM_COUNT_ALLOC("NSNamespace", nsPtr); } else { fprintf(stderr, "NSGetFreshNamespace: reusing namespace %p %s\n", nsPtr, nsPtr->fullName); } return (Tcl_Namespace *)nsPtr; } /* *---------------------------------------------------------------------- * NSRequireParentObject -- * * Try to require a parent object (e.g. during ttrace). This function * tries to load a parent object via ::nsf::object::unknown. * * Results: * returns 1 on success * * Side effects: * might create an object * *---------------------------------------------------------------------- */ static int NSRequireParentObject(Tcl_Interp *interp, CONST char *parentName) { int result; result = NsfCallObjectUnknownHandler(interp, Tcl_NewStringObj(parentName, -1)); if (result == TCL_OK) { NsfObject *parentObj = (NsfObject *) GetObjectFromString(interp, parentName); if (parentObj) { RequireObjNamespace(interp, parentObj); } result = (Tcl_FindNamespace(interp, parentName, (Tcl_Namespace *) NULL, TCL_GLOBAL_ONLY) != NULL); } return result; } /* *---------------------------------------------------------------------- * NSCheckNamespace -- * * Check if a namespace with the given name exists. If not, make * sure that a potential parent object has already required a * namespace. If there is no parent namespace yet, try to create a * parent object via __unknown. * If the provided parentNsPtr is not NULL, we know, that (a) the * provided name was relative and simple (contains no ":" * characters) and that (b) this namespace was used to build a fully * qualified name. In theses cases, the parentNsPtr points already * to the parentName, containing potentially a parent Object. In * all other cases, the parent name is either obtained from the * full namespace, or from string operations working on the * provided name. * * Results: * Tcl_Namespace for the provided name * * Side effects: * might create parent objects * *---------------------------------------------------------------------- */ NSF_INLINE static Tcl_Namespace * NSCheckNamespace(Tcl_Interp *interp, CONST char *nameString, Tcl_Namespace *parentNsPtr1) { Namespace *nsPtr, *dummy1Ptr, *dummy2Ptr, *parentNsPtr = (Namespace *)parentNsPtr1; CONST char *parentName, *dummy, *n; Tcl_DString ds, *dsPtr = &ds; int parentNameLength; /*fprintf(stderr, "NSCheckNamespace %s parentNsPtr %p\n", nameString, parentNsPtr);*/ /* * Check, if there is a already a namespace for the full name. The * namespace will be seldomly here, but we have to make this check * in every case. If there is a full namespace, we can use it to * determine the parent name. */ TclGetNamespaceForQualName(interp, nameString, NULL, TCL_GLOBAL_ONLY|TCL_FIND_ONLY_NS, &nsPtr, &dummy1Ptr, &dummy2Ptr, &dummy); /*fprintf(stderr, "before create calls TclGetNamespaceForQualName with %s => %p (%s) %p %s %p %s %p %s\n", nameString, nsPtr, nsPtr ? nsPtr->fullName : "", dummy1Ptr, dummy1Ptr ? dummy1Ptr->fullName : "", parentNsPtr, parentNsPtr ? parentNsPtr->fullName : "", dummy, dummy ? dummy : "");*/ /* * If there is a parentNs provided (or obtained from the full * namespace), we can determine the parent name from it. Otherwise, * we have to to perform the string operations. */ if (parentNsPtr == NULL && nsPtr) { parentNsPtr = Tcl_Namespace_parentPtr(nsPtr); } if (parentNsPtr) { parentNameLength = 0; parentName = parentNsPtr->fullName; if (*(parentName + 2) == '\0') { parentName = NULL; } /*fprintf(stderr, "NSCheckNamespace parentNs %s parentName of '%s' => '%s'\n", parentNsPtr->fullName, nameString, parentName);*/ } else { n = nameString + strlen(nameString); /* * search for last '::' */ while ((*n != ':' || *(n-1) != ':') && n-1 > nameString) {n--; } if (*n == ':' && n > nameString && *(n-1) == ':') {n--;} parentNameLength = n-nameString; if (parentNameLength > 0) { DSTRING_INIT(dsPtr); Tcl_DStringAppend(dsPtr, nameString, parentNameLength); parentName = Tcl_DStringValue(dsPtr); } else { parentName = NULL; } } if (parentName) { NsfObject *parentObj; parentObj = (NsfObject *) GetObjectFromString(interp, parentName); /*fprintf(stderr, "parentName %s parentObj %p\n", parentName, parentObj);*/ if (parentObj) { RequireObjNamespace(interp, parentObj); } else if (nsPtr == NULL && parentNsPtr == NULL) { TclGetNamespaceForQualName(interp, parentName, NULL, TCL_GLOBAL_ONLY|TCL_FIND_ONLY_NS, &parentNsPtr, &dummy1Ptr, &dummy2Ptr, &dummy); if (parentNsPtr == NULL) { /*fprintf(stderr, "===== calling NSRequireParentObject %s %p\n", parentName, cl);*/ NSRequireParentObject(interp, parentName); } } if (parentNameLength) { DSTRING_FREE(dsPtr); } } return (Tcl_Namespace *)nsPtr; } /* *---------------------------------------------------------------------- * NSFindCommand -- * * Find the "real" command belonging eg. to an Next Scripting class or object. * Do not return cmds produced by Tcl_Import, but the "real" cmd * to which they point. * * Results: * Tcl_Command or NULL * * Side effects: * None. * *---------------------------------------------------------------------- */ NSF_INLINE static Tcl_Command NSFindCommand(Tcl_Interp *interp, CONST char *name) { Tcl_Command cmd; assert(name); assert(*name == ':' && *(name + 1) == ':'); cmd = Tcl_FindCommand(interp, name, NULL, TCL_GLOBAL_ONLY); if (likely(cmd != NULL)) { Tcl_Command importedCmd = TclGetOriginalCommand(cmd); if (unlikely(importedCmd != NULL)) { cmd = importedCmd; } } return cmd; } #if !defined(NDEBUG) /* *---------------------------------------------------------------------- * ReverseLookupCmdFromCmdTable -- * * Allows for looking up objects in command tables (e.g., namespace cmd * tables, the interp's hidden cmd table) based on their command pointer * (rather than their command name). * * Results: * NsfObject* or NULL * * Side effects: * None. * *---------------------------------------------------------------------- */ static int ReverseLookupCmdFromCmdTable(Tcl_Interp *interp /* needed? */, Tcl_Command searchCmdPtr, Tcl_HashTable *cmdTablePtr) { Tcl_HashSearch search; Tcl_HashEntry *hPtr; assert(searchCmdPtr); assert(cmdTablePtr); for (hPtr = Tcl_FirstHashEntry(cmdTablePtr, &search); hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) { Tcl_Command needleCmdPtr = (Tcl_Command)Tcl_GetHashValue(hPtr); if (needleCmdPtr == searchCmdPtr) { return 1; } } return 0; } /* *---------------------------------------------------------------------- * GetHiddenObjectFromCmd -- * * Obtains a hidden object for a specified cmd. The function uses a reverse * lookup of *hidden* object structures based on their commands. This * helper is needed for handling hidden and re-exposed objects during the * shutdown and the cleanup of object systems. * * Results: * NsfObject* or NULL * * Side effects: * None. * *---------------------------------------------------------------------- */ static NsfObject * GetHiddenObjectFromCmd(Tcl_Interp *interp, Tcl_Command cmdPtr) { Interp *iPtr = (Interp *) interp; NsfObject *screenedObject; int found; assert(cmdPtr); /* * We can provide a shortcut, knowing that a) exposed cmds have an epoch * counter > 0, and b) the commands originating namespace must be the global * one. See also Tcl_HideCommand() and Tcl_ExposeCommand(). */ if (Tcl_Command_cmdEpoch(cmdPtr) == 0 || ((Command *)cmdPtr)->nsPtr != iPtr->globalNsPtr) { return NULL; } /* * Reverse lookup object in the interp's hidden command table. We start * off with the hidden cmds as we suspect their number being smaller than * the re-exposed ones, living in the global namespace */ found = ReverseLookupCmdFromCmdTable(interp, cmdPtr, iPtr->hiddenCmdTablePtr); if (!found) { /* * Reverse lookup object in the interp's global command table. Most likely * needed due to hiding + exposing on a different name. */ found = ReverseLookupCmdFromCmdTable(interp, cmdPtr, &iPtr->globalNsPtr->cmdTable); } screenedObject = found ? NsfGetObjectFromCmdPtr(cmdPtr) : NULL; #if !defined(NDEBUG) if (screenedObject) { fprintf(stderr, "SCREENED OBJECT %s found: object %p (%s) cmd %p\n", Tcl_GetCommandName(interp, cmdPtr), screenedObject, ObjectName(screenedObject), cmdPtr); } #endif return screenedObject; } #endif /* *---------------------------------------------------------------------- * GetObjectFromString -- * * Lookup an object from a given string. The function performs a * command lookup (every object is a command) and checks, if the * command is bound to an nsf object. * * Results: * NsfObject* or NULL * * Side effects: * None. * *---------------------------------------------------------------------- */ static NsfObject * GetObjectFromString(Tcl_Interp *interp, CONST char *name) { register Tcl_Command cmd; assert(name); /*fprintf(stderr, "GetObjectFromString name = '%s'\n", name);*/ cmd = NSFindCommand(interp, name); if (likely(cmd && CmdIsNsfObject(cmd))) { /*fprintf(stderr, "GetObjectFromString %s => %p\n", name, Tcl_Command_objClientData(cmd));*/ return (NsfObject *)Tcl_Command_objClientData(cmd); } /*fprintf(stderr, "GetObjectFromString %s => NULL\n", name);*/ return NULL; } /* *---------------------------------------------------------------------- * GetClassFromString -- * * Lookup a class from a given string. The function performs an * object lookup and checks, if the object is a class * * Results: * NsfClass* or NULL * * Side effects: * None. * *---------------------------------------------------------------------- */ static NsfClass * GetClassFromString(Tcl_Interp *interp, CONST char *name) { NsfObject *object = GetObjectFromString(interp, name); return (object && NsfObjectIsClass(object)) ? (NsfClass *)object : NULL; } /* *---------------------------------------------------------------------- * CanRedefineCmd -- * * This function tests, whether a method (provided as a string) is * allowed to be redefined in a provided namespace. * * Results: * Tcl result code. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int CanRedefineCmd(Tcl_Interp *interp, Tcl_Namespace *nsPtr, NsfObject *object, CONST char *methodName) { int result, ok; Tcl_Command cmd; assert(nsPtr); cmd = FindMethod(nsPtr, methodName); if (cmd) { if ( NsfGetObjectFromCmdPtr(cmd) != NULL) { /* * Don't allow overwriting of an object with an method. */ return NsfPrintError(interp, "refuse to overwrite child object with method %s; delete/rename it before overwriting", methodName); } ok = (Tcl_Command_flags(cmd) & NSF_CMD_REDEFINE_PROTECTED_METHOD) == 0; } else { ok = 1; } if (ok) { result = TCL_OK; } else { /* * We could test, whether we are bootstrapping the "right" object * system, and allow only overwrites for the current bootstrap * object system, but this seems necessary by now. */ Tcl_Obj *bootstrapObj = Tcl_GetVar2Ex(interp, "::nsf::bootstrap", NULL, TCL_GLOBAL_ONLY); if (bootstrapObj == NULL) { result = NsfPrintError(interp, "refuse to overwrite protected method '%s'; " "derive e.g. a sub-class!", methodName, ObjectName(object)); } else { result = TCL_OK; } } if (result == TCL_OK) { ObjectSystemsCheckSystemMethod(interp, methodName, object); } return result; } /* *---------------------------------------------------------------------- * NsfAddObjectMethod -- * * Externally callable function to register an object level method * for the provided object. * * Results: * Tcl result code. * * Side effects: * Newly created Tcl command. * *---------------------------------------------------------------------- */ int NsfAddObjectMethod(Tcl_Interp *interp, Nsf_Object *object1, CONST char *methodName, Tcl_ObjCmdProc *proc, ClientData clientData, Tcl_CmdDeleteProc *dp, int flags) { NsfObject *object = (NsfObject *)object1; Tcl_DString newCmdName, *dsPtr = &newCmdName; Tcl_Namespace *ns = RequireObjNamespace(interp, object); Tcl_Command newCmd; int result; /* Check, if we are allowed to redefine the method */ result = CanRedefineCmd(interp, object->nsPtr, object, (char *)methodName); if (unlikely(result != TCL_OK)) { return result; } NsfObjectMethodEpochIncr("NsfAddObjectMethod"); /* delete an alias definition, if it exists */ AliasDelete(interp, object->cmdName, methodName, 1); Tcl_DStringInit(dsPtr); DStringAppendQualName(dsPtr, ns, methodName); newCmd = Tcl_CreateObjCommand(interp, Tcl_DStringValue(dsPtr), proc, clientData, dp); if (flags) { ((Command *) newCmd)->flags |= flags; } Tcl_DStringFree(dsPtr); return TCL_OK; } /* *---------------------------------------------------------------------- * NsfAddClassMethod -- * * Externally callable function to register an class level method * for the provided class. * * Results: * Tcl result code. * * Side effects: * Newly created Tcl command. * *---------------------------------------------------------------------- */ int NsfAddClassMethod(Tcl_Interp *interp, Nsf_Class *class, CONST char *methodName, Tcl_ObjCmdProc *proc, ClientData clientData, Tcl_CmdDeleteProc *dp, int flags) { NsfClass *cl = (NsfClass *)class; Tcl_DString newCmdName, *dsPtr = &newCmdName; Tcl_Command newCmd; int result; /* Check, if we are allowed to redefine the method */ result = CanRedefineCmd(interp, cl->nsPtr, &cl->object, (char *)methodName); if (unlikely(result != TCL_OK)) { return result; } NsfInstanceMethodEpochIncr("NsfAddClassMethod"); /* delete an alias definition, if it exists */ AliasDelete(interp, class->object.cmdName, methodName, 0); Tcl_DStringInit(dsPtr); DStringAppendQualName(dsPtr, cl->nsPtr, methodName); newCmd = Tcl_CreateObjCommand(interp, Tcl_DStringValue(dsPtr), proc, clientData, dp); if (flags) { ((Command *) newCmd)->flags |= flags; } Tcl_DStringFree(dsPtr); return TCL_OK; } /* * Auto-naming */ static Tcl_Obj * AutonameIncr(Tcl_Interp *interp, Tcl_Obj *nameObj, NsfObject *object, int instanceOpt, int resetOpt) { int valueLength; Tcl_Obj *valueObj, *resultObj = NULL; int flogs = TCL_LEAVE_ERR_MSG; CallFrame frame, *framePtr = &frame; Nsf_PushFrameObj(interp, object, framePtr); if (object->nsPtr) { flogs |= TCL_NAMESPACE_ONLY; } valueObj = Tcl_ObjGetVar2(interp, NsfGlobalObjs[NSF_AUTONAMES], nameObj, flogs); if (valueObj) { long autoname_counter; /* should probably do an overflow check here */ Tcl_GetLongFromObj(interp, valueObj, &autoname_counter); autoname_counter++; if (Tcl_IsShared(valueObj)) { valueObj = Tcl_DuplicateObj(valueObj); } Tcl_SetLongObj(valueObj, autoname_counter); Tcl_ObjSetVar2(interp, NsfGlobalObjs[NSF_AUTONAMES], nameObj, valueObj, flogs); } if (resetOpt) { if (valueObj) { /* we have an entry */ Tcl_UnsetVar2(interp, NsfGlobalStrings[NSF_AUTONAMES], ObjStr(nameObj), flogs); } resultObj = NsfGlobalObjs[NSF_EMPTY]; INCR_REF_COUNT2("autoname", resultObj); } else { int mustCopy = 1, format = 0; char *c; if (valueObj == NULL) { valueObj = Tcl_ObjSetVar2(interp, NsfGlobalObjs[NSF_AUTONAMES], nameObj, NsfGlobalObjs[NSF_ONE], flogs); } if (instanceOpt) { char firstChar; CONST char *nextChars = ObjStr(nameObj); firstChar = *(nextChars ++); if (isupper((int)firstChar)) { char buffer[1]; buffer[0] = tolower((int)firstChar); resultObj = Tcl_NewStringObj(buffer, 1); INCR_REF_COUNT2("autoname", resultObj); Tcl_AppendLimitedToObj(resultObj, nextChars, -1, INT_MAX, NULL); mustCopy = 0; } } if (mustCopy) { resultObj = Tcl_DuplicateObj(nameObj); INCR_REF_COUNT2("autoname", resultObj); /* fprintf(stderr, "*** copy %p %s = %p\n", name, ObjStr(name), resultObj); */ } /* if we find a % in the autoname -> We use Tcl_FormatObjCmd to let the autoname string be formated, like Tcl "format" command, with the value. E.g.: autoname a%06d --> a000000, a000001, a000002, ... */ for (c = ObjStr(resultObj); *c != '\0'; c++) { if (*c == '%') { if (*(c+1) != '%') { format = 1; break; } else { /* when we find a %% we format and then append autoname, e.g. autoname a%% --> a%1, a%2, ... */ c++; } } } if (format) { Tcl_Obj *savedResultObj; ALLOC_ON_STACK(Tcl_Obj*, 3, ov); savedResultObj = Tcl_GetObjResult(interp); INCR_REF_COUNT(savedResultObj); ov[1] = resultObj; ov[2] = valueObj; if (NsfCallCommand(interp, NSF_FORMAT, 3, ov) != TCL_OK) { Nsf_PopFrameObj(interp, framePtr); DECR_REF_COUNT(savedResultObj); FREE_ON_STACK(Tcl_Obj*, ov); return NULL; } DECR_REF_COUNT(resultObj); resultObj = Tcl_DuplicateObj(Tcl_GetObjResult(interp)); INCR_REF_COUNT2("autoname", resultObj); Tcl_SetObjResult(interp, savedResultObj); DECR_REF_COUNT(savedResultObj); FREE_ON_STACK(Tcl_Obj*, ov); } else { char *valueString = Tcl_GetStringFromObj(valueObj, &valueLength); Tcl_AppendLimitedToObj(resultObj, valueString, valueLength, INT_MAX, NULL); /*fprintf(stderr, "+++ append to obj done\n");*/ } } Nsf_PopFrameObj(interp, framePtr); assert((resetOpt && resultObj->refCount>=1) || (resultObj->refCount == 1)); return resultObj; } /* * Next Scripting CallStack functions */ NSF_INLINE static void CallStackDoDestroy(Tcl_Interp *interp, NsfObject *object) { Tcl_Command oid; /*fprintf(stderr, "CallStackDoDestroy %p flags %.6x\n", object, object->flags);*/ PRINTOBJ("CallStackDoDestroy", object); /* * Don't do anything, if a recursive DURING_DELETE is for some * reason active. */ if (object->flags & NSF_DURING_DELETE) { return; } /*fprintf(stderr, "CallStackDoDestroy %p flags %.6x activation %d object->refCount %d cmd %p \n", object, object->flags, object->activationCount, object->refCount, object->id);*/ object->flags |= NSF_DURING_DELETE; oid = object->id; /* oid might be freed already, we can't even use (((Command *)oid)->flags & CMD_IS_DELETED) */ if (object->teardown && oid) { /* * PrimitiveDestroy() has to be before DeleteCommandFromToken(), * otherwise e.g. unset traces on this object cannot be executed * from Tcl. We make sure via refCounting that the object * structure is kept until after DeleteCommandFromToken(). */ NsfObjectRefCountIncr(object); PrimitiveDestroy(object); if /*(object->teardown == NULL)*/ ((object->flags & NSF_TCL_DELETE) == 0) { Tcl_Obj *savedResultObj = Tcl_GetObjResult(interp); INCR_REF_COUNT(savedResultObj); assert(object->teardown == NULL); /*fprintf(stderr, " before DeleteCommandFromToken %p object flags %.6x\n", oid, object->flags);*/ /*fprintf(stderr, "cmd dealloc %p refCount %d dodestroy \n", oid, Tcl_Command_refCount(oid));*/ Tcl_DeleteCommandFromToken(interp, oid); /* this can change the result */ /*fprintf(stderr, " after DeleteCommandFromToken %p %.6x\n", oid, ((Command *)oid)->flags);*/ Tcl_SetObjResult(interp, savedResultObj); DECR_REF_COUNT(savedResultObj); } NsfCleanupObject(object, "CallStackDoDestroy"); } } static void CallStackDestroyObject(Tcl_Interp *interp, NsfObject *object) { #ifdef OBJDELETION_TRACE fprintf(stderr, "CallStackDestroyObject %p %s activationcount %d flags %.6x\n", object, ObjectName(object), object->activationCount, object->flags); #endif if ((object->flags & NSF_DESTROY_CALLED) == 0) { int activationCount = object->activationCount; /* if the destroy method was not called yet, do it now */ #ifdef OBJDELETION_TRACE fprintf(stderr, " CallStackDestroyObject has to DispatchDestroyMethod %p activationCount %d\n", object, activationCount); #endif DispatchDestroyMethod(interp, object, 0); if (activationCount == 0) { /* * We assume, the object is now freed. If the object is already * freed, we cannot access activation count, and we cannot call * CallStackDoDestroy. */ /*fprintf(stderr, " CallStackDestroyObject %p done\n", obj);*/ return; } } /* * If the object is not referenced on the call-stack anymore * we have to destroy it directly, because CscFinish won't * find the object destroy. */ if (object->activationCount == 0) { CallStackDoDestroy(interp, object); } else { /* * To prevail the deletion order call delete children now -> children * destructors are called before parent's destructor. */ if (object->teardown && object->nsPtr) { /*fprintf(stderr, " CallStackDestroyObject calls NSDeleteChildren\n");*/ NSDeleteChildren(interp, object->nsPtr); } } /*fprintf(stderr, " CallStackDestroyObject %p DONE\n", object);*/ } /* * cmd list handling */ /* * Cmd List Add/Remove ... returns the new element */ static NsfCmdList * CmdListAdd(NsfCmdList **cList, Tcl_Command c, NsfClass *clorobj, int noDuplicates, int atEnd) { NsfCmdList *l, *nextPtr, *new; if (unlikely(atEnd)) { l = *cList; nextPtr = NULL; } else { l = NULL; nextPtr = *cList; } /* * check for duplicates, if necessary */ if (unlikely(noDuplicates)) { NsfCmdList *h = l, **end = NULL; while (h) { if (h->cmdPtr == c) { return h; } end = &(h->nextPtr); h = h->nextPtr; } if (end) { /* no duplicates, no need to search below, we are at the end of the list */ cList = end; l = NULL; } } /* * ok, we have no duplicates -> append "new" * to the end of the list */ new = NEW(NsfCmdList); new->cmdPtr = c; NsfCommandPreserve(new->cmdPtr); new->clientData = NULL; new->clorobj = clorobj; new->nextPtr = nextPtr; if (unlikely(l != NULL)) { /* * append new element at the end */ while (l->nextPtr) { l = l->nextPtr; } l->nextPtr = new; } else { /* * prepend new element */ *cList = new; } return new; } /* *---------------------------------------------------------------------- * CmdListAddSorted -- * * Add an entry to a cmdlist without duplicates. The order of the entries * is not supposed to be relevant. This function maintains a sorted list to * reduce cost to n/2. Can be improved be using better data structures of * needed. * * Results: * The newly inserted command list item or a found item * * Side effects: * Added List entry. * *---------------------------------------------------------------------- */ static NsfCmdList * CmdListAddSorted(NsfCmdList **cList, Tcl_Command c, NsfClass *clorobj) { NsfCmdList *prev, *new, *h; for (h = *cList, prev = NULL; h; prev = h, h = h->nextPtr) { if (h->cmdPtr == c) { return h; } else if (h->cmdPtr > c) { break; } } new = NEW(NsfCmdList); new->cmdPtr = c; NsfCommandPreserve(new->cmdPtr); new->clientData = NULL; new->clorobj = clorobj; new->nextPtr = h; if (prev) { prev->nextPtr = new; } else { *cList = new; } return new; } static void CmdListReplaceCmd(NsfCmdList *replace, Tcl_Command cmd, NsfClass *clorobj) { Tcl_Command del = replace->cmdPtr; replace->cmdPtr = cmd; replace->clorobj = clorobj; NsfCommandPreserve(cmd); NsfCommandRelease(del); } #if 0 /** for debug purposes only */ static void CmdListPrint(Tcl_Interp *interp, CONST char *title, NsfCmdList *cmdList) { if (title) { fprintf(stderr, "%s %p:\n", title, cmdList); } while (cmdList) { fprintf(stderr, " CL=%p, cmdPtr=%p %s, clorobj %p, clientData=%p\n", cmdList, cmdList->cmdPtr, interp ? Tcl_GetCommandName(interp, cmdList->cmdPtr) : "", cmdList->clorobj, cmdList->clientData); cmdList = cmdList->nextPtr; } } #endif /* * physically delete an entry 'del' */ static void CmdListDeleteCmdListEntry(NsfCmdList *del, NsfFreeCmdListClientData *freeFct) { if (unlikely(freeFct != NULL)) { (*freeFct)(del); } NsfCommandRelease(del->cmdPtr); FREE(NsfCmdList, del); } /* * remove a command 'delCL' from a command list, but do not * free it ... returns the removed NsfCmdList* */ static NsfCmdList * CmdListRemoveFromList(NsfCmdList **cmdList, NsfCmdList *delCL) { register NsfCmdList *c = *cmdList, *del = NULL; assert(delCL); if (c == NULL) { return NULL; } if (c == delCL) { *cmdList = c->nextPtr; del = c; } else { while (c->nextPtr && c->nextPtr != delCL) { c = c->nextPtr; } if (c->nextPtr == delCL) { del = delCL; c->nextPtr = delCL->nextPtr; } } return del; } /* *---------------------------------------------------------------------- * CmdListRemoveDeleted -- * * Remove all command pointers from a command list which are marked * "deleted". The condition for deletion is the presence of the flag * CMD_IS_DELETED, with the flag bit being set by * Tcl_DeleteCommandFromToken(). * * Results: * The cmd list filtered for non-deleted commands * * Side effects: * None * *---------------------------------------------------------------------- */ static void CmdListRemoveDeleted(NsfCmdList **cmdList, NsfFreeCmdListClientData *freeFct) { NsfCmdList *f = *cmdList, *del; while (f) { /* * HIDDEN OBJECTS: For supporting hidden mixins, we cannot rely on the * cmdEpoch as indicator of the deletion status of a cmd because the epoch * counters of hidden and re-exposed commands are bumped. Despite of this, * their object structures remain valid. We resort to the use of the * per-cmd flag CMD_IS_DELETED, set upon processing a command in * Tcl_DeleteCommandFromToken(). */ if (Tcl_Command_flags(f->cmdPtr) & CMD_IS_DELETED /* Tcl_Command_cmdEpoch(f->cmdPtr) */) { del = f; f = f->nextPtr; del = CmdListRemoveFromList(cmdList, del); CmdListDeleteCmdListEntry(del, freeFct); } else f = f->nextPtr; } } /* * delete all cmds with given context class object */ static void CmdListRemoveContextClassFromList(NsfCmdList **cmdList, NsfClass *clorobj, NsfFreeCmdListClientData *freeFct) { NsfCmdList *c, *del = NULL; /* CmdListRemoveDeleted(cmdList, freeFct); */ c = *cmdList; while (c && c->clorobj == clorobj) { del = c; *cmdList = c->nextPtr; CmdListDeleteCmdListEntry(del, freeFct); c = *cmdList; } while (c) { if (c->clorobj == clorobj) { del = c; c = *cmdList; while (c->nextPtr && c->nextPtr != del) { c = c->nextPtr; } if (c->nextPtr == del) { c->nextPtr = del->nextPtr; } CmdListDeleteCmdListEntry(del, freeFct); } c = c->nextPtr; } } /* * free the memory of a whole 'cmdList' */ static void CmdListFree(NsfCmdList **cmdList, NsfFreeCmdListClientData *freeFct) { NsfCmdList *del; while (*cmdList) { del = *cmdList; *cmdList = (*cmdList)->nextPtr; CmdListDeleteCmdListEntry(del, freeFct); } } /* * simple list search proc to search a list of cmds * for a command ptr */ static NsfCmdList * CmdListFindCmdInList(Tcl_Command cmd, NsfCmdList *l) { register NsfCmdList *h; for (h = l; h; h = h->nextPtr) { if (h->cmdPtr == cmd) return h; } return NULL; } /* * simple list search proc to search a list of cmds * for a simple Name */ static NsfCmdList * CmdListFindNameInList(Tcl_Interp *interp, CONST char *name, NsfCmdList *l) { register NsfCmdList *h; for (h = l; h; h = h->nextPtr) { CONST char *cmdName = Tcl_GetCommandName(interp, h->cmdPtr); if (cmdName[0] == name[0] && !strcmp(cmdName, name)) return h; } return NULL; } /* *---------------------------------------------------------------------- * CheckConditionInScope -- * * Check a given condition in the current call-frame's scope. It is * the responsibility of the caller to push the intended call-frame. * * Results: * Tcl result code. * * Side effects: * None * *---------------------------------------------------------------------- */ static int CheckConditionInScope(Tcl_Interp *interp, Tcl_Obj *condition) { int result, success; Tcl_Obj *ov[2] = {NULL, condition}; INCR_REF_COUNT(condition); result = Nsf_ExprObjCmd(NULL, interp, 2, ov); DECR_REF_COUNT(condition); if (result == TCL_OK) { result = Tcl_GetBooleanFromObj(interp, Tcl_GetObjResult(interp), &success); if (result == TCL_OK && success == 0) { result = NSF_CHECK_FAILED; } } return result; } /* * Generic Obj-List handling functions. */ /* *---------------------------------------------------------------------- * TclObjListFreeList -- * * Free the elements of the obj list. * * Results: * None. * * Side effects: * free memory. * *---------------------------------------------------------------------- */ static void TclObjListFreeList(NsfTclObjList *list) { NsfTclObjList *del; while (list) { del = list; list = list->nextPtr; DECR_REF_COUNT2("listContent", del->content); if (del->payload) {DECR_REF_COUNT2("listContent", del->payload);} FREE(NsfTclObjList, del); } } /* *---------------------------------------------------------------------- * TclObjListNewElement -- * * Add a new element to the obj list with an optional value (stored in * payload). * * Results: * None. * * Side effects: * allocate memory. * *---------------------------------------------------------------------- */ static Tcl_Obj * TclObjListNewElement(NsfTclObjList **list, Tcl_Obj *obj, Tcl_Obj *value) { NsfTclObjList *elt = NEW(NsfTclObjList); INCR_REF_COUNT2("listContent", obj); elt->content = obj; elt->payload = value; if (value) { INCR_REF_COUNT2("listPayload", value); } elt->nextPtr = *list; *list = elt; return obj; } /* *---------------------------------------------------------------------- * TclObjListAdd -- * * Add a NsfTclObjList element to the obj list indexed by a key into a * sorted list of elements. Duplicates are appended to the payload * elements. * * Results: * None. * * Side effects: * Add element to the obj-list. * *---------------------------------------------------------------------- */ static void TclObjListAdd(Tcl_Interp *interp, NsfTclObjList **list, Tcl_Obj *key, Tcl_Obj *value) { NsfTclObjList *elt, **prevPtr; CONST char *keyString = ObjStr(key); for (elt = *list, prevPtr = list; elt; prevPtr = &elt->nextPtr, elt = elt->nextPtr) { CONST char *eltString = ObjStr(elt->content); if (key == elt->content || strcmp(keyString, eltString) == 0) { /* * Found the element, append to it */ /* fprintf(stderr, "TclObjListAdd: insert %s equal %s\n", keyString, eltString);*/ Tcl_ListObjAppendElement(interp, elt->payload, value); return; } if (strcmp(keyString, eltString) < 0) { /* * Element not found, insert new before as a new entry. */ /* fprintf(stderr, "TclObjListAdd: insert %s before %s\n", keyString, eltString);*/ TclObjListNewElement(prevPtr, key, value); return; } } /* * Element not found, insert new as last entry. */ /* fprintf(stderr, "TclObjListAdd: insert last %s\n", keyString); */ TclObjListNewElement(prevPtr, key, Tcl_NewListObj(1, &value)); return; } #if defined(NSF_WITH_ASSERTIONS) /********************************************************************* * Assertions **********************************************************************/ static NsfTclObjList * AssertionNewList(Tcl_Interp *interp, Tcl_Obj *aObj) { Tcl_Obj **ov; int oc; NsfTclObjList *last = NULL; if (Tcl_ListObjGetElements(interp, aObj, &oc, &ov) == TCL_OK) { if (oc > 0) { int i; for (i = oc - 1; i >= 0; i--) { TclObjListNewElement(&last, ov[i], NULL); } } } return last; } static Tcl_Obj * AssertionList(Tcl_Interp *interp, NsfTclObjList *alist) { Tcl_Obj *listObj = Tcl_NewListObj(0, NULL); for (; alist; alist = alist->nextPtr) { Tcl_ListObjAppendElement(interp, listObj, alist->content); } return listObj; } static int AssertionListCheckOption(Tcl_Interp *interp, NsfObject *object) { NsfObjectOpt *opt = object->opt; Tcl_Obj *resultObj; if (!opt) return TCL_OK; resultObj = Tcl_GetObjResult(interp); if (opt->checkoptions & CHECK_OBJINVAR) Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj("object-invar", -1)); if (opt->checkoptions & CHECK_CLINVAR) Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj("class-invar", -1)); if (opt->checkoptions & CHECK_PRE) Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj("pre", -1)); if (opt->checkoptions & CHECK_POST) Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj("post", -1)); return TCL_OK; } static NsfProcAssertion * AssertionFindProcs(NsfAssertionStore *aStore, CONST char *name) { Tcl_HashEntry *hPtr; if (aStore == NULL) return NULL; hPtr = Tcl_CreateHashEntry(&aStore->procs, name, NULL); if (hPtr == NULL) return NULL; return (NsfProcAssertion *) Tcl_GetHashValue(hPtr); } static void AssertionRemoveProc(NsfAssertionStore *aStore, CONST char *name) { if (aStore) { Tcl_HashEntry *hPtr = Tcl_CreateHashEntry(&aStore->procs, name, NULL); if (hPtr) { NsfProcAssertion *procAss = (NsfProcAssertion *) Tcl_GetHashValue(hPtr); TclObjListFreeList(procAss->pre); TclObjListFreeList(procAss->post); FREE(NsfProcAssertion, procAss); Tcl_DeleteHashEntry(hPtr); } } } static void AssertionAddProc(Tcl_Interp *interp, CONST char *name, NsfAssertionStore *aStore, Tcl_Obj *pre, Tcl_Obj *post) { int new = 0; Tcl_HashEntry *hPtr = NULL; NsfProcAssertion *procs = NEW(NsfProcAssertion); AssertionRemoveProc(aStore, name); procs->pre = AssertionNewList(interp, pre); procs->post = AssertionNewList(interp, post); assert(aStore); hPtr = Tcl_CreateHashEntry(&aStore->procs, name, &new); if (new) { Tcl_SetHashValue(hPtr, procs); } } static NsfAssertionStore * AssertionCreateStore() { NsfAssertionStore *aStore = NEW(NsfAssertionStore); aStore->invariants = NULL; Tcl_InitHashTable(&aStore->procs, TCL_STRING_KEYS); MEM_COUNT_ALLOC("Tcl_InitHashTable", &aStore->procs); return aStore; } static void AssertionRemoveStore(NsfAssertionStore *aStore) { if (aStore) { Tcl_HashSearch hSrch; Tcl_HashEntry *hPtr; for (hPtr = Tcl_FirstHashEntry(&aStore->procs, &hSrch); hPtr; hPtr = Tcl_FirstHashEntry(&aStore->procs, &hSrch)) { /* * AssertionRemoveProc calls Tcl_DeleteHashEntry(hPtr), thus * we get the FirstHashEntry afterwards again to proceed */ AssertionRemoveProc(aStore, Tcl_GetHashKey(&aStore->procs, hPtr)); } Tcl_DeleteHashTable(&aStore->procs); MEM_COUNT_FREE("Tcl_InitHashTable", &aStore->procs); TclObjListFreeList(aStore->invariants); FREE(NsfAssertionStore, aStore); } } static int AssertionCheckList(Tcl_Interp *interp, NsfObject *object, NsfTclObjList *alist, CONST char *methodName) { NsfTclObjList *checkFailed = NULL; Tcl_Obj *savedResultObj = Tcl_GetObjResult(interp); int savedCheckoptions, acResult = TCL_OK; /* * no obj->opt -> checkoption == CHECK_NONE */ if (!object->opt) { return TCL_OK; } /* we do not check assertion modifying methods, otherwise we cannot react in catch on a runtime assertion check failure */ #if 1 /* TODO: the following check operations is XOTcl1 legacy and is not generic. it should be replaced by another method-property. Most of the is*String() definition are then obsolete and should be deleted from nsfInt.h as well. */ if (isCheckString(methodName)) { return TCL_OK; } #endif INCR_REF_COUNT(savedResultObj); Tcl_ResetResult(interp); while (alist) { /* Eval instead of IfObjCmd => the substitutions in the conditions will be done by Tcl */ CONST char *assStr = ObjStr(alist->content), *c = assStr; int comment = 0; for (; c && *c != '\0'; c++) { if (*c == '#') { comment = 1; break; } } if (!comment) { CallFrame frame, *framePtr = &frame; Nsf_PushFrameObj(interp, object, framePtr); /* don't check assertion during assertion check */ savedCheckoptions = object->opt->checkoptions; object->opt->checkoptions = CHECK_NONE; /* fprintf(stderr, "Checking Assertion %s ", assStr); */ /* * now check the assertion in the pushed call-frame's scope */ acResult = CheckConditionInScope(interp, alist->content); if (acResult != TCL_OK) { checkFailed = alist; } object->opt->checkoptions = savedCheckoptions; /* fprintf(stderr, "...%s\n", checkFailed ? "failed" : "ok"); */ Nsf_PopFrameObj(interp, framePtr); } if (checkFailed) { break; } alist = alist->nextPtr; } if (checkFailed) { DECR_REF_COUNT(savedResultObj); if (acResult == TCL_ERROR) { Tcl_Obj *sr = Tcl_GetObjResult(interp); INCR_REF_COUNT(sr); NsfPrintError(interp, "error in Assertion: {%s} in proc '%s'\n%s", ObjStr(checkFailed->content), methodName, ObjStr(sr)); DECR_REF_COUNT(sr); return TCL_ERROR; } return NsfPrintError(interp, "assertion failed check: {%s} in proc '%s'", ObjStr(checkFailed->content), methodName); } Tcl_SetObjResult(interp, savedResultObj); DECR_REF_COUNT(savedResultObj); return TCL_OK; } static int AssertionCheckInvars(Tcl_Interp *interp, NsfObject *object, CONST char *methodName, CheckOptions checkoptions) { int result = TCL_OK; if (checkoptions & CHECK_OBJINVAR && object->opt->assertions) { result = AssertionCheckList(interp, object, object->opt->assertions->invariants, methodName); } if (result != TCL_ERROR && checkoptions & CHECK_CLINVAR) { NsfClasses *clPtr; clPtr = TransitiveSuperClasses(object->cl); while (clPtr && result != TCL_ERROR) { NsfAssertionStore *aStore = (clPtr->cl->opt) ? clPtr->cl->opt->assertions : NULL; if (aStore) { result = AssertionCheckList(interp, object, aStore->invariants, methodName); } clPtr = clPtr->nextPtr; } } return result; } static int AssertionCheck(Tcl_Interp *interp, NsfObject *object, NsfClass *cl, CONST char *method, int checkOption) { int result = TCL_OK; NsfAssertionStore *aStore; if (cl) { aStore = cl->opt ? cl->opt->assertions : NULL; } else { aStore = object->opt ? object->opt->assertions : NULL; } assert(object->opt); if (checkOption & object->opt->checkoptions) { NsfProcAssertion *procs = AssertionFindProcs(aStore, method); if (procs) { switch (checkOption) { case CHECK_PRE: result = AssertionCheckList(interp, object, procs->pre, method); break; case CHECK_POST: result = AssertionCheckList(interp, object, procs->post, method); break; } } if (result != TCL_ERROR) { result = AssertionCheckInvars(interp, object, method, object->opt->checkoptions); } } return result; } static int AssertionSetCheckOptions(Tcl_Interp *interp, NsfObject *object, Tcl_Obj *arg) { NsfObjectOpt *opt = NsfRequireObjectOpt(object); int ocArgs; Tcl_Obj **ovArgs; opt->checkoptions = CHECK_NONE; if (Tcl_ListObjGetElements(interp, arg, &ocArgs, &ovArgs) == TCL_OK && ocArgs > 0) { int i; for (i = 0; i < ocArgs; i++) { CONST char *option = ObjStr(ovArgs[i]); if (option) { switch (*option) { case 'c': if (strcmp(option, "class-invar") == 0) { opt->checkoptions |= CHECK_CLINVAR; } break; case 'o': if (strcmp(option, "object-invar") == 0) { opt->checkoptions |= CHECK_OBJINVAR; } break; case 'p': if (strcmp(option, "pre") == 0) { opt->checkoptions |= CHECK_PRE; } else if (strcmp(option, "post") == 0) { opt->checkoptions |= CHECK_POST; } break; case 'a': if (strcmp(option, "all") == 0) { opt->checkoptions |= CHECK_ALL; } break; } } } } if (opt->checkoptions == CHECK_NONE && ocArgs>0) { return NsfPrintError(interp, "unknown check option in command '%s' check %s, ", "valid: all pre post object-invar class-invar", ObjectName(object), ObjStr(arg)); } return TCL_OK; } static void AssertionSetInvariants(Tcl_Interp *interp, NsfAssertionStore **assertions, Tcl_Obj *arg) { if (*assertions) { TclObjListFreeList((*assertions)->invariants); } else { *assertions = AssertionCreateStore(); } (*assertions)->invariants = AssertionNewList(interp, arg); } #endif /* NSF_WITH_ASSERTIONS */ /*********************************************************************** * Mixin support ***********************************************************************/ /* * push a mixin stack information on this object */ static int MixinStackPush(NsfObject *object) { register NsfMixinStack *h = NEW(NsfMixinStack); h->currentCmdPtr = NULL; h->nextPtr = object->mixinStack; object->mixinStack = h; /*fprintf(stderr, "MixinStackPush %p %s\n", object, ObjectName(object));*/ return 1; } /* * Pop a mixin stack information on this object. */ static void MixinStackPop(NsfObject *object) { register NsfMixinStack *h = object->mixinStack; /*fprintf(stderr, "MixinStackPop %p %s\n", object, ObjectName(object));*/ object->mixinStack = h->nextPtr; FREE(NsfMixinStack, h); } /* * Appends NsfClasses (containing the mixin-classes and their * super-classes) to 'mixinClasses' list from a given mixinList. */ static void MixinComputeOrderFullList(Tcl_Interp *interp, NsfCmdList **mixinList, NsfClasses **mixinClasses, NsfClasses **checkList, int level) { NsfCmdList *m; NsfClasses *pl, **clPtr = mixinClasses; CmdListRemoveDeleted(mixinList, GuardDel); for (m = *mixinList; m; m = m->nextPtr) { NsfClass *mCl = NsfGetClassFromCmdPtr(m->cmdPtr); if (mCl) { for (pl = TransitiveSuperClasses(mCl); pl; pl = pl->nextPtr) { if ((pl->cl->object.flags & NSF_IS_ROOT_CLASS) == 0) { NsfClassOpt *opt = pl->cl->opt; /* fprintf(stderr, "find %p %s in checklist 1 %p\n", pl->cl, ClassName(pl->cl), *checkList);*/ if (NsfClassListFind(*checkList, pl->cl)) { /*fprintf(stderr, "+++ never add %s\n", ClassName(pl->cl));*/ } else { if (opt && opt->classMixins) { /* * Compute transitively the (class) mixin-classes of this * added class. */ NsfClassListAdd(checkList, pl->cl, NULL); /*fprintf(stderr, "+++ transitive %s\n", ClassName(pl->cl));*/ MixinComputeOrderFullList(interp, &opt->classMixins, mixinClasses, checkList, level+1); } /*fprintf(stderr, "+++ add to mixinClasses %p path: %s clPtr %p\n", mixinClasses, ClassName(pl->cl), clPtr);*/ clPtr = NsfClassListAddNoDup(clPtr, pl->cl, m->clientData, NULL); } } } } } if (level == 0 && *checkList) { NsfClassListFree(*checkList); *checkList = NULL; } } /* *---------------------------------------------------------------------- * MixinResetOrder -- * * Free the mixin order of the provided object if it exists. * * Results: * void * * Side effects: * Frees potentially the mixinOrder list. * *---------------------------------------------------------------------- */ static void MixinResetOrder(NsfObject *object) { /*fprintf(stderr, "MixinResetOrder for object %s \n", ObjectName(object));*/ CmdListFree(&object->mixinOrder, NULL /*GuardDel*/); object->mixinOrder = NULL; } /* *---------------------------------------------------------------------- * NsfClassListAddPerClassMixins -- * * Append the class mixins to the provided list. CheckList is used to * eliminate potential duplicates. * * Results: * void * * Side effects: * Appends potentially elements to classList and checkList * *---------------------------------------------------------------------- */ static void NsfClassListAddPerClassMixins(Tcl_Interp *interp, NsfClass *cl, NsfClasses **classList, NsfClasses **checkList) { NsfClasses *pl; for (pl = TransitiveSuperClasses(cl); pl; pl = pl->nextPtr) { NsfClassOpt *clopt = pl->cl->opt; if (clopt && clopt->classMixins) { MixinComputeOrderFullList(interp, &clopt->classMixins, classList, checkList, 1); } } } /* *---------------------------------------------------------------------- * MixinComputeOrder -- * * Compute a duplicate-free linearized order of per-object and per-class * mixins and the class inheritance. The precedence rule is that the last * occurrence makes it into the final list. * * Results: * void * * Side effects: * object->mixinOrder is updated. * *---------------------------------------------------------------------- */ static void MixinComputeOrder(Tcl_Interp *interp, NsfObject *object) { NsfClasses *fullList, *checkList = NULL, *mixinClasses = NULL, *clPtr; if (object->mixinOrder) MixinResetOrder(object); /* Append per-obj mixins */ if (object->opt) { NsfCmdList *m; MixinComputeOrderFullList(interp, &object->opt->objMixins, &mixinClasses, &checkList, 1); /* * Add per-object mixins to checkList to avoid that theses classes in the * class mixins. * * TODO: we could add this already in MixinComputeOrderFullList() if we * provide an additional flag. */ for (m = object->opt->objMixins; m; m = m->nextPtr) { NsfClass *mCl = NsfGetClassFromCmdPtr(m->cmdPtr); if (mCl) { NsfClassListAddNoDup(&checkList, mCl, NULL, NULL); } } } /*fprintf(stderr, "%s ", ObjectName(object)); NsfClassListPrint("MixinComputeOrder poms", mixinClasses); NsfClassListPrint("MixinComputeOrder poms checkList", checkList);*/ /* append per-class mixins */ NsfClassListAddPerClassMixins(interp, object->cl, &mixinClasses, &checkList); /*fprintf(stderr, "%s ", ObjectName(object)); NsfClassListPrint("MixinComputeOrder poms+pcms", mixinClasses); CmdListPrint(interp, "mixinOrder", object->mixinOrder);*/ NsfClassListFree(checkList); fullList = mixinClasses; /* * Don't add duplicates or classes of the precedence order to the resulting * list. */ for (clPtr = mixinClasses; clPtr; clPtr = clPtr->nextPtr) { NsfClass *cl = clPtr->cl; NsfClasses *checker; /*fprintf(stderr, "--- Work on %s\n", ClassName(cl)); CmdListPrint(interp, "mixinOrder", object->mixinOrder);*/ checker = NsfClassListFind(clPtr->nextPtr, cl); /* * if checker is set, it is a duplicate and ignored */ if (checker == NULL) { /* check object->cl hierarchy */ checker = NsfClassListFind(TransitiveSuperClasses(object->cl), cl); /* * if checker is set, it was found in the class hierarchy and it is ignored */ } if (checker == NULL) { /* add the class to the mixinOrder list */ NsfCmdList *new; /*fprintf(stderr, "--- adding to mixinOrder %s to cmdlist %p of object %s\n", ClassName(cl), object->mixinOrder, ObjectName(object));*/ new = CmdListAdd(&object->mixinOrder, cl->object.id, NULL, /*noDuplicates*/ 0, 1); /*CmdListPrint(interp, "mixinOrder", object->mixinOrder);*/ /* * We require the first matching guard of the full list in the new * client data */ checker = NsfClassListFind(fullList, cl); if (checker) { new->clientData = checker->clientData; } } } /* ... and free the memory of the full list */ NsfClassListFree(fullList); /*CmdListPrint(interp, "mixin order\n", obj->mixinOrder);*/ } /* *---------------------------------------------------------------------- * MixinAdd -- * * Add a mixinreg (mixin-class with a potential guard) provided as a * Tcl_Obj* to 'mixinList' by appending it to the provided cmdList. * * Results: * Tcl result code. * * Side effects: * Potentially allocating cmd list elements added to the mixinList * *---------------------------------------------------------------------- */ static int MixinAdd(Tcl_Interp *interp, NsfCmdList **mixinList, Tcl_Obj *nameObj, NsfClass *baseClass) { NsfClass *mixinCl; Tcl_Obj *guardObj; NsfCmdList *new; /*fprintf(stderr, "MixinAdd gets obj %p type %p %s\n", nameObj, nameObj->typePtr, nameObj->typePtr?nameObj->typePtr->name : "NULL");*/ /* * When the provided nameObj is of type NsfMixinregObjType, the nsf specific * converter was called already; otherwise call the converter here. */ if (nameObj->typePtr != &NsfMixinregObjType) { if (Tcl_ConvertToType(interp, nameObj, &NsfMixinregObjType) != TCL_OK) { return TCL_ERROR; } } NsfMixinregGet(nameObj, &mixinCl, &guardObj); new = CmdListAdd(mixinList, mixinCl->object.id, NULL, /*noDuplicates*/ 1, 1); if (guardObj) { GuardAdd(new, guardObj); } else if (new->clientData) { GuardDel(new); } return TCL_OK; } /* *---------------------------------------------------------------------- * AppendMatchingElement -- * * Call AppendElement to the resultObj for values matching the specified * pattern. * * Results: * void * * Side effects: * Appends element to the result object * *---------------------------------------------------------------------- */ static void AppendMatchingElement(Tcl_Interp *interp, Tcl_Obj *resultObj, Tcl_Obj *nameObj, CONST char *pattern) { if (!pattern || Tcl_StringMatch( ObjStr(nameObj), pattern)) { Tcl_ListObjAppendElement(interp, resultObj, nameObj); } } /* *---------------------------------------------------------------------- * AppendMatchingElementsFromCmdList -- * * Apply AppendMatchingElement() to all elements of the passed * Cmdlist * * Results: * 1 iff a matching object was provided and it was found; 0 otherwise * * Side effects: * Appends elements to the result * *---------------------------------------------------------------------- */ static int AppendMatchingElementsFromCmdList(Tcl_Interp *interp, NsfCmdList *cmdl, Tcl_Obj *resultObj, CONST char *pattern, NsfObject *matchObject) { int rc = 0; for ( ; cmdl; cmdl = cmdl->nextPtr) { NsfObject *object = NsfGetObjectFromCmdPtr(cmdl->cmdPtr); if (object) { if (matchObject == object) { return 1; } else { AppendMatchingElement(interp, resultObj, object->cmdName, pattern); } } } return rc; } /* *---------------------------------------------------------------------- * AppendMatchingElementsFromClasses -- * * Apply AppendMatchingElement() to all elements of the passed * class list * * Results: * 1 iff a matching object was provided and it was found; 0 otherwise * * Side effects: * Appends elements to the result * *---------------------------------------------------------------------- */ static int AppendMatchingElementsFromClasses(Tcl_Interp *interp, NsfClasses *cls, CONST char *pattern, NsfObject *matchObject) { int rc = 0; Tcl_Obj *resultObj = Tcl_GetObjResult(interp); for ( ; cls; cls = cls->nextPtr) { NsfObject *object = (NsfObject *)cls->cl; if (object) { if (matchObject && object == matchObject) { /* * We have a matchObject and it is identical to obj, * just return true and don't continue search */ return 1; } else { AppendMatchingElement(interp, resultObj, object->cmdName, pattern); } } } return rc; } /* *---------------------------------------------------------------------- * GetAllInstances -- * * Get all instances of a class recursively into an initialized * String key hash-table * * Results: * void * * Side effects: * Passed hash-table contains instances * *---------------------------------------------------------------------- */ static void GetAllInstances(Tcl_Interp *interp, NsfCmdList **instances, NsfClass *startCl) { NsfClasses *clPtr, *subClasses = TransitiveSubClasses(startCl); for (clPtr = subClasses; clPtr; clPtr = clPtr->nextPtr) { Tcl_HashTable *tablePtr = &clPtr->cl->instances; Tcl_HashSearch search; Tcl_HashEntry *hPtr; for (hPtr = Tcl_FirstHashEntry(tablePtr, &search); hPtr; hPtr = Tcl_NextHashEntry(&search)) { NsfObject *inst = (NsfObject *)Tcl_GetHashKey(tablePtr, hPtr); Command *cmdPtr; if (unlikely(inst->flags & NSF_TCL_DELETE)) { NsfLog(interp, NSF_LOG_NOTICE, "Object %s is apparently deleted", ObjectName(inst)); continue; } cmdPtr = (Command *)inst->id; assert(cmdPtr); if (unlikely(cmdPtr->nsPtr->flags & NS_DYING)) { NsfLog(interp, NSF_LOG_WARN, "Namespace of %s is apparently deleted", ObjectName(inst)); continue; } #if !defined(NDEBUG) { /* * Make sure, we can still lookup the object; the object has to be still * alive. */ NsfObject *object = GetObjectFromString(interp, ObjectName(inst)); /* * HIDDEN OBJECTS: Provide a fallback to a pointer-based lookup. This is * needed because objects can be hidden or re-exposed under a different * name which is not reported back to the object system by the [interp * hide|expose] mechanism. However, we still want to process hidden and * re-exposed objects during cleanup like ordinary, exposed ones. */ if (unlikely(object == NULL)) { object = GetHiddenObjectFromCmd(interp, inst->id); } assert(object); } #endif /*fprintf (stderr, " -- %p flags %.6x activation %d %s id %p id->flags %.6x " "nsPtr->flags %.6x (instance of %s)\n", inst, inst->flags, inst->activationCount, ObjectName(inst), inst->id, cmdPtr->flags, cmdPtr->nsPtr ? cmdPtr->nsPtr->flags : 0, ClassName(clPtr->cl));*/ CmdListAdd(instances, inst->id, (NsfClass *)inst, 0, 0); } } NsfClassListFree(subClasses); } /* *---------------------------------------------------------------------- * AddToResultSet -- * * Helper function to add classes to the result set (implemented as * a hash-table), flagging test for matchObject as result * * Results: * 1 iff a matching object was provided and it was found; 0 otherwise * * Side effects: * Appends optionally element to the result object * *---------------------------------------------------------------------- */ static int AddToResultSet(Tcl_Interp *interp, Tcl_HashTable *destTablePtr, Tcl_Obj *resultSet, NsfObject *object, int *new, int appendResult, CONST char *pattern, NsfObject *matchObject) { Tcl_CreateHashEntry(destTablePtr, (char *)object, new); if (*new) { if (matchObject && matchObject == object) { return 1; } if (appendResult) { AppendMatchingElement(interp, resultSet, object->cmdName, pattern); } } return 0; } /* *---------------------------------------------------------------------- * AddToResultSetWithGuards -- * * Helper function to add classes with guards to the result set * (implemented as a hash-table, full version as a Tcl list), flagging test * for matchObject as result. * * Results: * 1 iff a matching object was provided and it was found; 0 otherwise * * Side effects: * Appends optionally element to the result object * *---------------------------------------------------------------------- */ static int AddToResultSetWithGuards(Tcl_Interp *interp, Tcl_HashTable *destTablePtr, Tcl_Obj *resultSet, NsfClass *cl, ClientData clientData, int *new, int appendResult, CONST char *pattern, NsfObject *matchObject) { assert(cl); Tcl_CreateHashEntry(destTablePtr, (char *)cl, new); if (*new) { if (appendResult) { if (!pattern || Tcl_StringMatch(ClassName(cl), pattern)) { Tcl_Obj *listObj = Tcl_NewListObj(0, NULL); Tcl_Obj *g = (Tcl_Obj *) clientData; INCR_REF_COUNT(listObj); Tcl_ListObjAppendElement(interp, listObj, cl->object.cmdName); Tcl_ListObjAppendElement(interp, listObj, NsfGlobalObjs[NSF_GUARD_OPTION]); Tcl_ListObjAppendElement(interp, listObj, g); Tcl_ListObjAppendElement(interp, resultSet, listObj); DECR_REF_COUNT(listObj); } } if (matchObject && matchObject == (NsfObject *)cl) { return 1; } } return 0; } /* *---------------------------------------------------------------------- * GetAllObjectMixinsOf -- * * Computes a set of classes, into which this class was mixed in * via per object mixin. The function gets recursively all per * object mixins from an class and its subclasses/isClassMixinOf * and adds it into an initialized object ptr hash-table * (TCL_ONE_WORD_KEYS) * * Results: * Tcl return code * * Side effects: * The set of classes is returned in the provided hash-table * *---------------------------------------------------------------------- */ static int GetAllObjectMixinsOf(Tcl_Interp *interp, Tcl_HashTable *destTablePtr, Tcl_Obj *resultSet, NsfClass *startCl, int isMixin, int appendResult, CONST char *pattern, NsfObject *matchObject) { int rc = 0, new = 0; NsfClasses *sc; /*fprintf(stderr, "startCl = %s, opt %p, isMixin %d, pattern '%s', matchObject %p\n", ClassName(startCl), startCl->opt, isMixin, pattern, matchObject);*/ /* * check all subclasses of startCl for mixins */ for (sc = startCl->sub; sc; sc = sc->nextPtr) { rc = GetAllObjectMixinsOf(interp, destTablePtr, resultSet, sc->cl, isMixin, appendResult, pattern, matchObject); if (rc) {return rc;} } /*fprintf(stderr, "check subclasses of %s done\n", ClassName(startCl));*/ if (startCl->opt) { NsfCmdList *m; NsfClass *cl; for (m = startCl->opt->isClassMixinOf; m; m = m->nextPtr) { /* we should have no deleted commands in the list */ assert((Tcl_Command_flags(m->cmdPtr) & CMD_IS_DELETED) == 0); cl = NsfGetClassFromCmdPtr(m->cmdPtr); assert(cl); /*fprintf(stderr, "check %s mixinof %s\n", ClassName(cl), ClassName((startCl)));*/ rc = GetAllObjectMixinsOf(interp, destTablePtr, resultSet, cl, isMixin, appendResult, pattern, matchObject); /* fprintf(stderr, "check %s mixinof %s done\n", ClassName(cl), ClassName(startCl));*/ if (rc) {return rc;} } } /* * check, if startCl has associated per-object mixins */ if (startCl->opt) { NsfCmdList *m; NsfObject *object; for (m = startCl->opt->isObjectMixinOf; m; m = m->nextPtr) { /* we should have no deleted commands in the list */ assert((Tcl_Command_flags(m->cmdPtr) & CMD_IS_DELETED) == 0); object = NsfGetObjectFromCmdPtr(m->cmdPtr); assert(object); rc = AddToResultSet(interp, destTablePtr, resultSet, object, &new, appendResult, pattern, matchObject); if (rc == 1) {return rc;} } } return rc; } /* *---------------------------------------------------------------------- * GetAllClassMixinsOf -- * * Computes a set of classes, into which this class was mixed in * via as a class mixin. The function gets recursively all per * class mixins from an class and its subclasses and adds it * into an initialized object ptr hash-table (TCL_ONE_WORD_KEYS) * * Results: * Tcl return code * * Side effects: * The set of classes is returned in the provided hash-table * *---------------------------------------------------------------------- */ static int GetAllClassMixinsOf(Tcl_Interp *interp, Tcl_HashTable *destTablePtr, Tcl_Obj *resultSet, /*@notnull@*/ NsfClass *startCl, int isMixin, int appendResult, CONST char *pattern, NsfObject *matchObject) { int rc = 0, new = 0; NsfClass *cl; NsfClasses *sc; assert(startCl); /*fprintf(stderr, "startCl = %p %s, opt %p, isMixin %d\n", startCl, ClassName(startCl), startCl->opt, isMixin);*/ /* * the startCl is a per class mixin, add it to the result set */ if (isMixin) { rc = AddToResultSet(interp, destTablePtr, resultSet, &startCl->object, &new, appendResult, pattern, matchObject); if (rc == 1) {return rc;} /* * check all subclasses of startCl for mixins */ for (sc = startCl->sub; sc; sc = sc->nextPtr) { #if !defined(NDEBUG) if (sc->cl == startCl) { /* * Sanity check: it seems that we can create via * __default_superclass a class which has itself as subclass! */ fprintf(stderr, "... STRANGE %p is subclass of %p %s, sub %p\n", sc->cl, startCl, ClassName(startCl), startCl->sub); continue; } #endif assert(sc->cl != startCl); rc = GetAllClassMixinsOf(interp, destTablePtr, resultSet, sc->cl, isMixin, appendResult, pattern, matchObject); if (rc) { return rc; } } } /* * check, if startCl is a per-class mixin of some other classes */ if (startCl->opt) { NsfCmdList *m; for (m = startCl->opt->isClassMixinOf; m; m = m->nextPtr) { /* we should have no deleted commands in the list */ assert((Tcl_Command_flags(m->cmdPtr) & CMD_IS_DELETED) == 0); cl = NsfGetClassFromCmdPtr(m->cmdPtr); assert(cl); rc = AddToResultSet(interp, destTablePtr, resultSet, &cl->object, &new, appendResult, pattern, matchObject); if (rc == 1) {return rc;} if (new) { /*fprintf(stderr, "... new\n");*/ rc = GetAllClassMixinsOf(interp, destTablePtr, resultSet, cl, 1, appendResult, pattern, matchObject); if (rc) {return rc;} } } } return rc; } /* *---------------------------------------------------------------------- * GetAllClassMixins -- * * Computes a set class-mixins of a given class and handles * transitive cases. The classes are added it into an initialized * object ptr hash-table (TCL_ONE_WORD_KEYS) * * Results: * Tcl return code * * Side effects: * The set of classes is returned in the provided hash-table * *---------------------------------------------------------------------- */ static int GetAllClassMixins(Tcl_Interp *interp, Tcl_HashTable *destTablePtr, Tcl_Obj *resultObj, NsfClass *startCl, int withGuards, CONST char *pattern, NsfObject *matchObject) { int rc = 0, new = 0; NsfClass *cl; NsfClasses *sc; /* * check this class for class mixins. */ if (startCl->opt) { NsfCmdList *m; for (m = startCl->opt->classMixins; m; m = m->nextPtr) { /* we should have no deleted commands in the list */ assert((Tcl_Command_flags(m->cmdPtr) & CMD_IS_DELETED) == 0); cl = NsfGetClassFromCmdPtr(m->cmdPtr); assert(cl); /* fprintf(stderr, "class mixin found: %s\n", ClassName(cl)); */ if ((withGuards) && (m->clientData)) { /* fprintf(stderr, "AddToResultSetWithGuards: %s\n", ClassName(cl)); */ rc = AddToResultSetWithGuards(interp, destTablePtr, resultObj, cl, m->clientData, &new, 1, pattern, matchObject); } else { /* fprintf(stderr, "AddToResultSet: %s\n", ClassName(cl)); */ rc = AddToResultSet(interp, destTablePtr, resultObj, &cl->object, &new, 1, pattern, matchObject); } if (rc == 1) {return rc;} if (new) { /* fprintf(stderr, "class mixin GetAllClassMixins for: %s (%s)\n", ClassName(cl), ClassName(startCl)); */ rc = GetAllClassMixins(interp, destTablePtr, resultObj, cl, withGuards, pattern, matchObject); if (rc) {return rc;} } } } /* * check all superclasses of startCl for class mixins. */ for (sc = startCl->super; sc; sc = sc->nextPtr) { /* fprintf(stderr, "Superclass GetAllClassMixins for %s (%s)\n", ClassName(sc->cl), ClassName(startCl)); */ rc = GetAllClassMixins(interp, destTablePtr, resultObj, sc->cl, withGuards, pattern, matchObject); if (rc) {return rc;} } return rc; } /* *---------------------------------------------------------------------- * RemoveFromClassMixinsOf -- * * Remove the class (provided as a cmd) from all isClassMixinOf definitions * from the provided classes (provided as cmdlist). * * Results: * void * * Side effects: * Deletes potentially some entries in the isClassMixinOf lists. * *---------------------------------------------------------------------- */ static void RemoveFromClassMixinsOf(Tcl_Command cmd, NsfCmdList *cmdlist) { for ( ; cmdlist; cmdlist = cmdlist->nextPtr) { NsfClass *ncl = NsfGetClassFromCmdPtr(cmdlist->cmdPtr); NsfClassOpt *nclopt = ncl ? ncl->opt : NULL; if (nclopt) { NsfCmdList *del = CmdListFindCmdInList(cmd, nclopt->isClassMixinOf); if (del) { /* fprintf(stderr, "Removing class %s from isClassMixinOf of class %s\n", ClassName(cl), ObjStr(NsfGetClassFromCmdPtr(cmdlist->cmdPtr)->object.cmdName)); */ del = CmdListRemoveFromList(&nclopt->isClassMixinOf, del); CmdListDeleteCmdListEntry(del, GuardDel); } } } } /* *---------------------------------------------------------------------- * RemoveFromObjectMixinsOf -- * * Remove the class (provided as a cmd) from all isObjectMixinOf definitions * from the provided classes (provided as cmdlist). * * Results: * void * * Side effects: * Deletes potentially some entries in the isObjectMixinOf lists. * *---------------------------------------------------------------------- */ static void RemoveFromObjectMixinsOf(Tcl_Command cmd, NsfCmdList *cmdlist) { for ( ; cmdlist; cmdlist = cmdlist->nextPtr) { NsfClass *cl = NsfGetClassFromCmdPtr(cmdlist->cmdPtr); NsfClassOpt *clopt = cl ? cl->opt : NULL; if (clopt) { NsfCmdList *del = CmdListFindCmdInList(cmd, clopt->isObjectMixinOf); if (del) { /* fprintf(stderr, "Removing object %s from isObjectMixinOf of Class %s\n", ObjectName(object), ObjStr(NsfGetClassFromCmdPtr(cmdlist->cmdPtr)->object.cmdName)); */ del = CmdListRemoveFromList(&clopt->isObjectMixinOf, del); CmdListDeleteCmdListEntry(del, GuardDel); } } /* else fprintf(stderr, "CleanupDestroyObject %s: NULL pointer in mixins!\n", ObjectName(object)); */ } } /* *---------------------------------------------------------------------- * RemoveFromClassmixins -- * * Remove the class (provided as a cmd) from all class mixins lists * from the provided classes (provided as cmdlist). * * Results: * void * * Side effects: * Deletes potentially some entries in the class mixins lists. * *---------------------------------------------------------------------- */ static void RemoveFromClassmixins(Tcl_Command cmd, NsfCmdList *cmdlist) { for ( ; cmdlist; cmdlist = cmdlist->nextPtr) { NsfClass *cl = NsfGetClassFromCmdPtr(cmdlist->cmdPtr); NsfClassOpt *clopt = cl ? cl->opt : NULL; if (clopt) { NsfCmdList *del = CmdListFindCmdInList(cmd, clopt->classMixins); if (del) { /* fprintf(stderr, "Removing class %s from mixins of object %s\n", ClassName(cl), ObjStr(NsfGetObjectFromCmdPtr(cmdlist->cmdPtr)->cmdName)); */ del = CmdListRemoveFromList(&clopt->classMixins, del); CmdListDeleteCmdListEntry(del, GuardDel); if (cl->object.mixinOrder) MixinResetOrder(&cl->object); } } } } /* *---------------------------------------------------------------------- * RemoveFromObjectMixins -- * * Remove the class (provided as a cmd) from all object mixin lists * from the provided classes (provided as cmdlist). * * Results: * void * * Side effects: * Deletes potentially some entries in the object mixins lists. * *---------------------------------------------------------------------- */ static void RemoveFromObjectMixins(Tcl_Command cmd, NsfCmdList *cmdlist) { for ( ; cmdlist; cmdlist = cmdlist->nextPtr) { NsfObject *nobj = NsfGetObjectFromCmdPtr(cmdlist->cmdPtr); NsfObjectOpt *objopt = nobj ? nobj->opt : NULL; if (objopt) { NsfCmdList *del = CmdListFindCmdInList(cmd, objopt->objMixins); if (del) { /* fprintf(stderr, "Removing class %s from mixins of object %s\n", ClassName(cl), ObjStr(NsfGetObjectFromCmdPtr(cmdlist->cmdPtr)->cmdName)); */ del = CmdListRemoveFromList(&objopt->objMixins, del); CmdListDeleteCmdListEntry(del, GuardDel); if (nobj->mixinOrder) MixinResetOrder(nobj); } } } } /* *---------------------------------------------------------------------- * MixinResetOrderForInstances -- * * Reset the per-object mixin order for the instances of the provided * class. * * Results: * void * * Side effects: * Deletes potentially the mixin list for the objects. * *---------------------------------------------------------------------- */ static void MixinResetOrderForInstances(NsfClass *cl) { Tcl_HashSearch hSrch; Tcl_HashEntry *hPtr; /*fprintf(stderr, "invalidating instances of class %s\n", ClassName(clPtr->cl));*/ /* Here we should check, whether this class is used as an object or class mixin somewhere else and invalidate the objects of these as well -- */ for (hPtr = Tcl_FirstHashEntry(&cl->instances, &hSrch); hPtr; hPtr = Tcl_NextHashEntry(&hSrch)) { NsfObject *object = (NsfObject *)Tcl_GetHashKey(&cl->instances, hPtr); if (object && !(object->flags & NSF_DURING_DELETE) && (object->flags & NSF_MIXIN_ORDER_DEFINED_AND_VALID)) { MixinResetOrder(object); object->flags &= ~NSF_MIXIN_ORDER_VALID; } } } /* *---------------------------------------------------------------------- * ResetOrderOfClassesUsedAsMixins -- * * Reset the per-object mixin order for all objects having this class as * per-object mixin. * * Results: * void * * Side effects: * Deletes potentially the mixin list for the objects. * *---------------------------------------------------------------------- */ static void ResetOrderOfClassesUsedAsMixins(NsfClass *cl) { /*fprintf(stderr, "ResetOrderOfClassesUsedAsMixins %s - %p\n", ClassName(cl), cl->opt);*/ if (cl->opt) { NsfCmdList *ml; for (ml = cl->opt->isObjectMixinOf; ml; ml = ml->nextPtr) { NsfObject *object = NsfGetObjectFromCmdPtr(ml->cmdPtr); if (object) { if (object->mixinOrder) { MixinResetOrder(object); } object->flags &= ~NSF_MIXIN_ORDER_VALID; } } } } /* *---------------------------------------------------------------------- * MixinInvalidateObjOrders -- * * Reset mixin order for all instances of the class and the instances of * its subclasses. This function is typically called, when the the class * hierarchy or the class mixins have changed and invalidate mixin entries * in all dependent instances. * * Results: * void * * Side effects: * Deletes potentially the mixin list for the objects and classes. * *---------------------------------------------------------------------- */ static void MixinInvalidateObjOrders(Tcl_Interp *interp, NsfClass *cl, NsfClasses *subClasses) { NsfClasses *clPtr; Tcl_HashSearch hSrch; Tcl_HashEntry *hPtr; Tcl_HashTable objTable, *commandTable = &objTable, *instanceTablePtr; /* * Iterate over the subclass hierarchy. */ for (clPtr = subClasses; clPtr; clPtr = clPtr->nextPtr) { Tcl_HashSearch hSrch; Tcl_HashEntry *hPtr; /* * Reset mixin order for all objects having this class as per object mixin */ ResetOrderOfClassesUsedAsMixins(clPtr->cl); /* fprintf(stderr, "invalidating instances of class %s\n", ClassName(clPtr)); */ instanceTablePtr = &clPtr->cl->instances; for (hPtr = Tcl_FirstHashEntry(instanceTablePtr, &hSrch); hPtr; hPtr = Tcl_NextHashEntry(&hSrch)) { NsfObject *object = (NsfObject *)Tcl_GetHashKey(instanceTablePtr, hPtr); if (object->mixinOrder) { MixinResetOrder(object); } object->flags &= ~NSF_MIXIN_ORDER_VALID; } } /* * Reset the mixin order for all objects having this class as a per class * mixin. This means that we have to work through the class mixin hierarchy * with its corresponding instances. */ Tcl_InitHashTable(commandTable, TCL_ONE_WORD_KEYS); MEM_COUNT_ALLOC("Tcl_InitHashTable", commandTable); GetAllClassMixinsOf(interp, commandTable, Tcl_GetObjResult(interp), cl, 1, 0, NULL, NULL); for (hPtr = Tcl_FirstHashEntry(commandTable, &hSrch); hPtr; hPtr = Tcl_NextHashEntry(&hSrch)) { NsfClass *ncl = (NsfClass *)Tcl_GetHashKey(commandTable, hPtr); /*fprintf(stderr, "Got %s, reset for ncl %p\n", ncl?ClassName(ncl):"NULL", ncl);*/ if (ncl) { MixinResetOrderForInstances(ncl); /* * This place seems to be sufficient to invalidate the computed object * parameter definitions. */ /*fprintf(stderr, "MixinInvalidateObjOrders via class mixin %s calls ifd invalidate \n", ClassName(ncl));*/ NsfParameterInvalidateClassCacheCmd(interp, ncl); } } Tcl_DeleteHashTable(commandTable); MEM_COUNT_FREE("Tcl_InitHashTable", commandTable); } /* *---------------------------------------------------------------------- * MixinComputeDefined -- * * This function computes the mixin order for the provided object and * adjusts the mixin flags accordingly. The mixin order is either * * DEFINED (there are mixins on the instance), * NONE (there are no mixins for the instance), * or INVALID (a class restructuring has occurred, * thus it is not clear whether mixins are defined or not). * * If the mixin order is INVALID, MixinComputeDefined can be used to * compute the order and set the instance to DEFINED or NONE * * Results: * void * * Side effects: * Might alter the mixin order. * *---------------------------------------------------------------------- */ static void MixinComputeDefined(Tcl_Interp *interp, NsfObject *object) { MixinComputeOrder(interp, object); object->flags |= NSF_MIXIN_ORDER_VALID; if (object->mixinOrder) { object->flags |= NSF_MIXIN_ORDER_DEFINED; } else { object->flags &= ~NSF_MIXIN_ORDER_DEFINED; } } /* *---------------------------------------------------------------------- * ComputePrecedenceList -- * * Returns the precedence list for the provided object. The precedence * list can optionally include the mixins and the root class. If pattern is * provided, this is used as well for filtering. The caller has to free the * resulting list via NsfClassListFree(); * * Results: * Precedence list inf form of a class list. * * Side effects: * Allocated class list. * *---------------------------------------------------------------------- */ static NsfClasses * ComputePrecedenceList(Tcl_Interp *interp, NsfObject *object, CONST char *pattern, int withMixins, int withRootClass) { NsfClasses *precedenceList = NULL, *pcl, **npl = &precedenceList; if (withMixins) { if (!(object->flags & NSF_MIXIN_ORDER_VALID)) { MixinComputeDefined(interp, object); } if (object->flags & NSF_MIXIN_ORDER_DEFINED_AND_VALID) { NsfCmdList *ml; for (ml = object->mixinOrder; ml; ml = ml->nextPtr) { NsfClass *mixin = NsfGetClassFromCmdPtr(ml->cmdPtr); if (pattern && !Tcl_StringMatch(ClassName(mixin), pattern)) { continue; } npl = NsfClassListAdd(npl, mixin, NULL); } } } pcl = TransitiveSuperClasses(object->cl); for (; pcl; pcl = pcl->nextPtr) { if (withRootClass == 0 && pcl->cl->object.flags & NSF_IS_ROOT_CLASS) { continue; } if (pattern && !Tcl_StringMatch(ClassName(pcl->cl), pattern)) { continue; } npl = NsfClassListAdd(npl, pcl->cl, NULL); } return precedenceList; } /* *---------------------------------------------------------------------- * SeekCurrent -- * * Walk through the command list until the provided command is reached. * return the next entry. If the provided cmd is NULL, then return the * first entry. * * Results: * Command list pointer or NULL * * Side effects: * None. * *---------------------------------------------------------------------- */ static NsfCmdList * SeekCurrent(Tcl_Command cmd, register NsfCmdList *cmdListPtr) { if (cmd) { for (; cmdListPtr; cmdListPtr = cmdListPtr->nextPtr) { if (cmdListPtr->cmdPtr == cmd) { return cmdListPtr->nextPtr; } } return NULL; } return cmdListPtr; } /* *---------------------------------------------------------------------- * CanInvokeMixinMethod -- * * Check, whether the provided cmd is allowed to be dispatch in a mixin. * * Results: * Tcl result code or NSF_CHECK_FAILED in case, search should continue * * Side effects: * None. * *---------------------------------------------------------------------- */ static int CanInvokeMixinMethod(Tcl_Interp *interp, NsfObject *object, Tcl_Command cmd, NsfCmdList *cmdList) { int result = TCL_OK; int cmdFlags = Tcl_Command_flags(cmd); if ((cmdFlags & NSF_CMD_CALL_PRIVATE_METHOD) || ((cmdFlags & NSF_CMD_CLASS_ONLY_METHOD) && !NsfObjectIsClass(object))) { /* * The command is not applicable for objects (i.e. might crash, * since it expects a class record); therefore skip it */ return NSF_CHECK_FAILED; } if (cmdList->clientData && !RUNTIME_STATE(interp)->guardCount) { /*fprintf(stderr, "guard call\n");*/ result = GuardCall(object, interp, (Tcl_Obj *)cmdList->clientData, NULL); } return result; } /* *---------------------------------------------------------------------- * MixinSearchProc -- * * Search for a method name in the mixin list of the provided * object. Depending on the state of the mixin stack, the search starts * at the beginning or at the last dispatched, shadowed method on * the mixin path. * * Results: * Tcl result code. * Returns as well always cmd (maybe NULL) in cmdPtr. * Returns on success as well the class and the currentCmdPointer * for continuation in next. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int MixinSearchProc(Tcl_Interp *interp, NsfObject *object, CONST char *methodName, Tcl_Obj *methodObj, NsfClass **clPtr, Tcl_Command *currentCmdPtr, Tcl_Command *cmdPtr) { Tcl_Command cmd = NULL; NsfCmdList *cmdList; NsfClass *cl = NULL; int result = TCL_OK; assert(object); assert(object->mixinStack); assert(methodName); /* ensure that the mixin order is valid */ assert(object->flags & NSF_MIXIN_ORDER_VALID); cmdList = SeekCurrent(object->mixinStack->currentCmdPtr, object->mixinOrder); RUNTIME_STATE(interp)->currentMixinCmdPtr = cmdList ? cmdList->cmdPtr : NULL; /*fprintf(stderr,"searching for '%s' in %p\n", methodName, cmdList); CmdListPrint(interp, "MixinSearch CL = \n", cmdList);*/ if (unlikely(*clPtr && *cmdPtr)) { Tcl_Command lastCmdPtr = NULL; /*fprintf(stderr, "... new branch\n");*/ for (; cmdList; cmdList = cmdList->nextPtr) { NsfClass *cl1; /* * Ignore deleted commands */ if (Tcl_Command_flags(cmdList->cmdPtr) & CMD_IS_DELETED) { continue; } cl1 = NsfGetClassFromCmdPtr(cmdList->cmdPtr); assert(cl1); lastCmdPtr = cmdList->cmdPtr; if (cl1 == *clPtr) { /* * The wanted class was found. Check guards and permissions to * determine whether we can invoke this method. */ result = CanInvokeMixinMethod(interp, object, *cmdPtr, cmdList); if (likely(result == TCL_OK)) { cl = cl1; } else if (result == NSF_CHECK_FAILED) { result = TCL_OK; } /* * No matter, what the result is, stop the search through the mixin * classes here. */ break; } } if (cl) { assert(cmdList); /* * On success: return class and cmdList->cmdPtr; */ *currentCmdPtr = cmdList->cmdPtr; /*fprintf(stderr, "... mixinsearch success returns %p (cl %s)\n", cmd, ClassName(cl));*/ } else { /* * We did not find the absolute entry in the mixins. Set the * currentCmdPtr (on the mixin stack) to the last entry to flag, that * the mixin list should not started again on a next. */ *cmdPtr = NULL; *currentCmdPtr = lastCmdPtr; /*fprintf(stderr, "... mixinsearch success failure %p (cl %s)\n", cmd, ClassName(cl));*/ } return result; } else { for (; cmdList; cmdList = cmdList->nextPtr) { /* * Ignore deleted commands */ if (Tcl_Command_flags(cmdList->cmdPtr) & CMD_IS_DELETED) { continue; } cl = NsfGetClassFromCmdPtr(cmdList->cmdPtr); assert(cl); /* fprintf(stderr, "+++ MixinSearch %s->%s in %p cmdPtr %p clientData %p\n", ObjectName(object), methodName, cmdList, cmdList->cmdPtr, cmdList->clientData); */ cmd = FindMethod(cl->nsPtr, methodName); if (cmd == NULL) { continue; } result = CanInvokeMixinMethod(interp, object, cmd, cmdList); if (unlikely(result == TCL_ERROR)) { return result; } else if (result == NSF_CHECK_FAILED) { result = TCL_OK; cmd = NULL; continue; } /* * cmd was found and is applicable. We return class and cmdPtr. */ *clPtr = cl; *currentCmdPtr = cmdList->cmdPtr; /*fprintf(stderr, "mixinsearch returns %p (cl %s)\n", cmd, ClassName(cl));*/ break; } } *cmdPtr = cmd; return result; } /* * info option for mixins and class mixins */ static int MixinInfo(Tcl_Interp *interp, NsfCmdList *m, CONST char *pattern, int withGuards, NsfObject *matchObject) { Tcl_Obj *list = Tcl_NewListObj(0, NULL); NsfClass *mixinClass; /*fprintf(stderr, " mixin info m=%p, pattern %s, matchObject %p\n", m, pattern, matchObject);*/ while (m) { /* fprintf(stderr, " mixin info m=%p, next=%p, pattern %s, matchObject %p\n", m, m->next, pattern, matchObject);*/ mixinClass = NsfGetClassFromCmdPtr(m->cmdPtr); if (mixinClass && (!pattern || (matchObject && &(mixinClass->object) == matchObject) || (!matchObject && Tcl_StringMatch(ObjStr(mixinClass->object.cmdName), pattern)))) { if (withGuards && m->clientData) { Tcl_Obj *l = Tcl_NewListObj(0, NULL); Tcl_Obj *g = (Tcl_Obj *) m->clientData; Tcl_ListObjAppendElement(interp, l, mixinClass->object.cmdName); Tcl_ListObjAppendElement(interp, l, NsfGlobalObjs[NSF_GUARD_OPTION]); Tcl_ListObjAppendElement(interp, l, g); Tcl_ListObjAppendElement(interp, list, l); } else { Tcl_ListObjAppendElement(interp, list, mixinClass->object.cmdName); } if (matchObject) break; } m = m->nextPtr; } Tcl_SetObjResult(interp, list); return TCL_OK; } /* * info option for mixinofs and isClassMixinOf */ static Tcl_Command MixinSearchMethodByName(NsfCmdList *mixinList, CONST char *name, NsfClass **cl) { Tcl_Command cmd; for (; mixinList; mixinList = mixinList->nextPtr) { NsfClass *foundCl = NsfGetClassFromCmdPtr(mixinList->cmdPtr); if (foundCl && SearchCMethod(foundCl, name, &cmd)) { if (cl) *cl = foundCl; return cmd; } } return NULL; } /* * Filter-Commands */ /* * The search method implements filter search order for object and * class filter: first a given name is interpreted as fully qualified * method name. If no method is found, a proc is searched with fully * name. Otherwise the simple name is searched on the heritage order: * object (only for per-object filters), class, meta-class */ static Tcl_Command FilterSearch(CONST char *name, NsfObject *startingObject, NsfClass *startingClass, NsfClass **cl) { Tcl_Command cmd = NULL; if (startingObject) { NsfObjectOpt *opt = startingObject->opt; /* * the object-specific filter can also be defined on the object's * class, its hierarchy, or the respective class mixins; thus use the * object's class as start point for the class-specific search then ... */ startingClass = startingObject->cl; /* * search for filters on object mixins */ if (opt && opt->objMixins) { if ((cmd = MixinSearchMethodByName(opt->objMixins, name, cl))) { return cmd; } } } /* * search for class filters on class mixins */ if (startingClass) { NsfClassOpt *opt = startingClass->opt; if (opt && opt->classMixins) { if ((cmd = MixinSearchMethodByName(opt->classMixins, name, cl))) { return cmd; } } } /* * search for object procs that are used as filters */ if (startingObject && startingObject->nsPtr) { /*fprintf(stderr, "search filter %s as proc \n", name);*/ if ((cmd = FindMethod(startingObject->nsPtr, name))) { *cl = (NsfClass *)startingObject; return cmd; } } /* * ok, no filter on obj or mixins -> search class */ if (startingClass) { *cl = SearchCMethod(startingClass, name, &cmd); if (!*cl) { /* * If no filter is found yet -> search the meta-class */ *cl = SearchCMethod(startingClass->object.cl, name, &cmd); } } return cmd; } /* * Filter Guards */ /* check a filter guard, return 1 if ok */ static int GuardCheck(Tcl_Interp *interp, Tcl_Obj *guardObj) { NsfRuntimeState *rst = RUNTIME_STATE(interp); if (guardObj) { int result; /* * if there are more than one filter guard for this filter * (i.e. they are inherited), then they are OR combined * -> if one check succeeds => return 1 */ /*fprintf(stderr, "checking guard **%s**\n", ObjStr(guardObj));*/ rst->guardCount++; result = CheckConditionInScope(interp, guardObj); rst->guardCount--; /*fprintf(stderr, "checking guard **%s** returned rc=%d\n", ObjStr(guardObj), rc);*/ if (result == TCL_OK) { /* fprintf(stderr, " +++ OK\n"); */ return TCL_OK; } else if (result == TCL_ERROR) { Tcl_Obj *sr = Tcl_GetObjResult(interp); INCR_REF_COUNT(sr); NsfPrintError(interp, "Guard error: '%s'\n%s", ObjStr(guardObj), ObjStr(sr)); DECR_REF_COUNT(sr); return TCL_ERROR; } } /* fprintf(stderr, " +++ FAILED\n"); */ return NSF_CHECK_FAILED; } /* static void GuardPrint(Tcl_Interp *interp, ClientData clientData) { Tcl_Obj *guardObj = (TclObj *) clientData; fprintf(stderr, " +++ \n"); if (guardObj) { fprintf(stderr, " * %s \n", ObjStr(guardObj)); } fprintf(stderr, " +++ \n"); } */ static void GuardDel(NsfCmdList *CL) { /*fprintf(stderr, "GuardDel %p clientData = %p\n", CL, CL? CL->clientData : NULL);*/ if (CL && CL->clientData) { DECR_REF_COUNT2("guardObj", (Tcl_Obj *)CL->clientData); CL->clientData = NULL; } } NSF_INLINE static void GuardAdd(NsfCmdList *CL, Tcl_Obj *guardObj) { if (guardObj) { GuardDel(CL); if (strlen(ObjStr(guardObj)) != 0) { INCR_REF_COUNT2("guardObj", guardObj); CL->clientData = guardObj; /*fprintf(stderr, "guard added to %p cmdPtr=%p, clientData= %p\n", CL, CL->cmdPtr, CL->clientData); */ } } } static int GuardCall(NsfObject *object, Tcl_Interp *interp, Tcl_Obj *guardObj, NsfCallStackContent *cscPtr) { int result = TCL_OK; if (guardObj) { Tcl_Obj *res = Tcl_GetObjResult(interp); /* save the result */ CallFrame frame, *framePtr = &frame; INCR_REF_COUNT(res); /* * For the guard push a fake call-frame on the Tcl stack so that * e.g. a "self calledproc" and other methods in the guard behave * like in the proc. */ if (cscPtr) { Nsf_PushFrameCsc(interp, cscPtr, framePtr); } else { Nsf_PushFrameObj(interp, object, framePtr); } result = GuardCheck(interp, guardObj); if (cscPtr) { Nsf_PopFrameCsc(interp, framePtr); } else { Nsf_PopFrameObj(interp, framePtr); } if (result != TCL_ERROR) { Tcl_SetObjResult(interp, res); /* restore the result */ } DECR_REF_COUNT(res); } return result; } static int GuardAddFromDefinitionList(NsfCmdList *dest, Tcl_Command interceptorCmd, NsfCmdList *interceptorDefList) { if (interceptorDefList) { NsfCmdList *h = CmdListFindCmdInList(interceptorCmd, interceptorDefList); if (h) { GuardAdd(dest, (Tcl_Obj *) h->clientData); /* * 1 means we have added a guard successfully "interceptorCmd" */ return 1; } } /* * 0 means we have not added a guard successfully "interceptorCmd" */ return 0; } static void GuardAddInheritedGuards(Tcl_Interp *interp, NsfCmdList *dest, NsfObject *object, Tcl_Command filterCmd) { NsfClasses *pl; int guardAdded = 0; NsfObjectOpt *opt; /* search guards for class filters registered on mixins */ if (!(object->flags & NSF_MIXIN_ORDER_VALID)) { MixinComputeDefined(interp, object); } if (object->flags & NSF_MIXIN_ORDER_DEFINED_AND_VALID) { NsfCmdList *ml; NsfClass *mixin; for (ml = object->mixinOrder; ml && !guardAdded; ml = ml->nextPtr) { mixin = NsfGetClassFromCmdPtr(ml->cmdPtr); if (mixin && mixin->opt) { guardAdded = GuardAddFromDefinitionList(dest, filterCmd, mixin->opt->classFilters); } } } /* search per-object filters */ opt = object->opt; if (!guardAdded && opt && opt->objFilters) { guardAdded = GuardAddFromDefinitionList(dest, filterCmd, opt->objFilters); } if (!guardAdded) { /* search per-class filters */ for (pl = TransitiveSuperClasses(object->cl); !guardAdded && pl; pl = pl->nextPtr) { NsfClassOpt *clopt = pl->cl->opt; if (clopt) { guardAdded = GuardAddFromDefinitionList(dest, filterCmd, clopt->classFilters); } } /* * if this is not a registered filter, it is an inherited filter, like: * Class create A * A method f ... * Class create B -superclass A * B method {{f {}}} * B filter f * -> get the guard from the filter that inherits it (here B->f) */ if (!guardAdded) { NsfCmdList *registeredFilter = CmdListFindNameInList(interp, (char *) Tcl_GetCommandName(interp, filterCmd), object->filterOrder); if (registeredFilter) { GuardAdd(dest, (Tcl_Obj *) registeredFilter->clientData); } } } } static int GuardList(Tcl_Interp *interp, NsfCmdList *frl, CONST char *interceptorName) { if (frl) { /* try to find simple name first */ NsfCmdList *h = CmdListFindNameInList(interp, interceptorName, frl); if (!h) { /* maybe it is a qualified name */ Tcl_Command cmd = NSFindCommand(interp, interceptorName); if (cmd) { h = CmdListFindCmdInList(cmd, frl); } } if (h) { Tcl_ResetResult(interp); if (h->clientData) { Tcl_Obj *g = (Tcl_Obj *) h->clientData; Tcl_SetObjResult(interp, g); } return TCL_OK; } } return NsfPrintError(interp, "info guard: can't find filter/mixin %s", interceptorName); } /* *---------------------------------------------------------------------- * FilterAddActive -- * * Add a method name to the set of methods, which were used as filters in * the current interp. * * TODO: let the set shrink, when filters are removed. * * Results: * None. * * Side effects: * Adding or updating of a hash entry * *---------------------------------------------------------------------- */ static void FilterAddActive(Tcl_Interp *interp, CONST char *methodName) { NsfRuntimeState *rst = RUNTIME_STATE(interp); Tcl_HashEntry *hPtr; int newItem; hPtr = Tcl_CreateHashEntry(&rst->activeFilterTablePtr, methodName, &newItem); if (newItem) { Tcl_SetHashValue(hPtr, INT2PTR(1)); } else { int count = PTR2INT(Tcl_GetHashValue(hPtr)); Tcl_SetHashValue(hPtr, INT2PTR(count+1)); } } /* *---------------------------------------------------------------------- * FilterIsActive -- * * Check, wether a method name is in the set of methods, which were used as * filters in the current interp. * * Results: * Boolean * * Side effects: * none * *---------------------------------------------------------------------- */ static int FilterIsActive(Tcl_Interp *interp, CONST char *methodName) { NsfRuntimeState *rst = RUNTIME_STATE(interp); Tcl_HashEntry *hPtr; hPtr = Tcl_CreateHashEntry(&rst->activeFilterTablePtr, methodName, NULL); return (hPtr != NULL); } /* *---------------------------------------------------------------------- * FiltersDefined -- * * Return the number of defined distinct names of filters. * * Results: * Positive number. * * Side effects: * none. * *---------------------------------------------------------------------- */ static int FiltersDefined(Tcl_Interp *interp) { NsfRuntimeState *rst = RUNTIME_STATE(interp); return Tcl_HashSize(&rst->activeFilterTablePtr); } /* * append a filter command to the 'filterList' of an obj/class */ static int FilterAdd(Tcl_Interp *interp, NsfCmdList **filterList, Tcl_Obj *filterregObj, NsfObject *startingObject, NsfClass *startingClass) { Tcl_Obj *filterObj = NULL; Tcl_Obj *guardObj = NULL; Tcl_Command cmd; NsfCmdList *new; NsfClass *cl; /* * When the provided nameObj is of type NsfFilterregObjType, the nsf specific * converter was called already; otherwise call the converter here. */ if (filterregObj->typePtr != &NsfFilterregObjType) { /*fprintf(stderr, "FilterAdd: convert %s in FilterAdd\n", ObjStr(filterregObj));*/ if (Tcl_ConvertToType(interp, filterregObj, &NsfFilterregObjType) != TCL_OK) { return TCL_ERROR; } } else { /*fprintf(stderr, "FilterAdd: %s already converted\n", ObjStr(filterregObj));*/ } NsfFilterregGet(filterregObj, &filterObj, &guardObj); if (!(cmd = FilterSearch(ObjStr(filterObj), startingObject, startingClass, &cl))) { if (startingObject) { return NsfPrintError(interp, "object filter: can't find filterproc '%s' on %s ", ObjStr(filterObj), ObjectName(startingObject)); } else { return NsfPrintError(interp, "class filter: can't find filterproc '%s' on %s ", ObjStr(filterObj), ClassName(startingClass)); } } /*fprintf(stderr, " +++ adding filter %s cl %p\n", ObjStr(nameObj), cl);*/ new = CmdListAdd(filterList, cmd, cl, /*noDuplicates*/ 1, 1); FilterAddActive(interp, ObjStr(filterObj)); if (guardObj) { GuardAdd(new, guardObj); } else if (new->clientData) { GuardDel(new); } return TCL_OK; } /* * reset the filter order cached in obj->filterOrder */ static void FilterResetOrder(NsfObject *object) { CmdListFree(&object->filterOrder, GuardDel); object->filterOrder = NULL; } /* * search the filter in the hierarchy again with FilterSearch, e.g. * upon changes in the class hierarchy or mixins that carry the filter * command, so that we can be sure it is still reachable. */ static void FilterSearchAgain(Tcl_Interp *interp, NsfCmdList **filters, NsfObject *startingObject, NsfClass *startingClass) { char *simpleName; Tcl_Command cmd; NsfCmdList *cmdList, *del; NsfClass *cl = NULL; CmdListRemoveDeleted(filters, GuardDel); for (cmdList = *filters; cmdList; ) { simpleName = (char *) Tcl_GetCommandName(interp, cmdList->cmdPtr); cmd = FilterSearch(simpleName, startingObject, startingClass, &cl); if (cmd == NULL) { del = CmdListRemoveFromList(filters, cmdList); cmdList = cmdList->nextPtr; CmdListDeleteCmdListEntry(del, GuardDel); } else if (cmd != cmdList->cmdPtr) { CmdListReplaceCmd(cmdList, cmd, cl); cmdList = cmdList->nextPtr; } else { cmdList = cmdList->nextPtr; } } /* some entries might be NULL now, if they are not found anymore -> delete those CmdListRemoveNulledEntries(filters, GuardDel); */ } /* * if the class hierarchy or class filters have changed -> * invalidate filter entries in all dependent instances * */ static void FilterInvalidateObjOrders(Tcl_Interp *interp, NsfClass *cl, NsfClasses *subClasses) { NsfClasses *clPtr; for (clPtr = subClasses; clPtr; clPtr = clPtr->nextPtr) { Tcl_HashSearch hSrch; Tcl_HashEntry *hPtr; assert(clPtr->cl); hPtr = &clPtr->cl->instances ? Tcl_FirstHashEntry(&clPtr->cl->instances, &hSrch) : NULL; /* recalculate the commands of all class-filter registrations */ if (clPtr->cl->opt) { FilterSearchAgain(interp, &clPtr->cl->opt->classFilters, 0, clPtr->cl); } for (; hPtr; hPtr = Tcl_NextHashEntry(&hSrch)) { NsfObject *object = (NsfObject *)Tcl_GetHashKey(&clPtr->cl->instances, hPtr); FilterResetOrder(object); object->flags &= ~NSF_FILTER_ORDER_VALID; /* recalculate the commands of all object filter registrations */ if (object->opt) { FilterSearchAgain(interp, &object->opt->objFilters, object, 0); } } } } /* * from cl on down the hierarchy we remove all filters * the refer to "removeClass" namespace. E.g. used to * remove filters defined in superclass list from dependent * class cl */ static void FilterRemoveDependentFilterCmds(NsfClass *cl, NsfClass *removeClass, NsfClasses *subClasses) { NsfClasses *clPtr; /*fprintf(stderr, "FilterRemoveDependentFilterCmds cl %p %s, removeClass %p %s\n", cl, ClassName(cl), removeClass, ObjStr(removeClass->object.cmdName));*/ for (clPtr = subClasses; clPtr; clPtr = clPtr->nextPtr) { Tcl_HashSearch hSrch; Tcl_HashEntry *hPtr; NsfClassOpt *opt; assert(clPtr->cl); hPtr = &clPtr->cl->instances ? Tcl_FirstHashEntry(&clPtr->cl->instances, &hSrch) : NULL; opt = clPtr->cl->opt; if (opt) { CmdListRemoveContextClassFromList(&opt->classFilters, removeClass, GuardDel); } for (; hPtr; hPtr = Tcl_NextHashEntry(&hSrch)) { NsfObject *object = (NsfObject *) Tcl_GetHashKey(&clPtr->cl->instances, hPtr); if (object->opt) { CmdListRemoveContextClassFromList(&object->opt->objFilters, removeClass, GuardDel); } } } } /* *---------------------------------------------------------------------- * MethodHandleObj -- * * Builds a methodHandle from a method name. We assume, the methodName is * not fully qualified (i.e. it must not start with a colon). * * Results: * fresh Tcl_Obj * * Side effects: * none * *---------------------------------------------------------------------- */ static Tcl_Obj * MethodHandleObj(NsfObject *object, int withPer_object, CONST char *methodName) { Tcl_Obj *resultObj; assert(object); assert(*methodName != ':'); resultObj = Tcl_NewStringObj(withPer_object ? "" : "::nsf::classes", -1); Tcl_AppendObjToObj(resultObj, object->cmdName); Tcl_AppendStringsToObj(resultObj, "::", methodName, (char *) NULL); return resultObj; } /* * info option for filters and class filters * withGuards -> if not 0 => append guards * withMethodHandles -> if not 0 => return method handles */ static int FilterInfo(Tcl_Interp *interp, NsfCmdList *f, CONST char *pattern, int withGuards, int withMethodHandles) { CONST char *simpleName; Tcl_Obj *list = Tcl_NewListObj(0, NULL); /*fprintf(stderr, "FilterInfo %p %s %d %d\n", pattern, pattern, withGuards, withMethodHandles);*/ /* * Guard lists should only have unqualified filter lists when * withGuards is activated, withMethodHandles has no effect */ if (withGuards) { withMethodHandles = 0; } while (f) { simpleName = Tcl_GetCommandName(interp, f->cmdPtr); if (!pattern || Tcl_StringMatch(simpleName, pattern)) { if (withGuards && f->clientData) { Tcl_Obj *innerList = Tcl_NewListObj(0, NULL); Tcl_Obj *g = (Tcl_Obj *) f->clientData; Tcl_ListObjAppendElement(interp, innerList, Tcl_NewStringObj(simpleName, -1)); Tcl_ListObjAppendElement(interp, innerList, NsfGlobalObjs[NSF_GUARD_OPTION]); Tcl_ListObjAppendElement(interp, innerList, g); Tcl_ListObjAppendElement(interp, list, innerList); } else { if (withMethodHandles) { NsfClass *filterClass = f->clorobj; Tcl_ListObjAppendElement(interp, list, MethodHandleObj((NsfObject *)filterClass, !NsfObjectIsClass(&filterClass->object), simpleName)); } else { Tcl_ListObjAppendElement(interp, list, Tcl_NewStringObj(simpleName, -1)); } } } f = f->nextPtr; } Tcl_SetObjResult(interp, list); return TCL_OK; } /* * Appends NsfCmdPtr *containing the filter cmds and their * superclass specializations to 'filterList' */ static void FilterComputeOrderFullList(Tcl_Interp *interp, NsfCmdList **filters, NsfCmdList **filterList) { NsfCmdList *f ; char *simpleName; NsfClass *fcl; NsfClasses *pl; /* * Ensure that no epoched command is in the filters list. */ CmdListRemoveDeleted(filters, GuardDel); for (f = *filters; f; f = f->nextPtr) { simpleName = (char *) Tcl_GetCommandName(interp, f->cmdPtr); fcl = f->clorobj; CmdListAdd(filterList, f->cmdPtr, fcl, /*noDuplicates*/ 0, 1); if (fcl && !NsfObjectIsClass(&fcl->object)) { /* get the class from the object for per-object filter */ fcl = ((NsfObject *)fcl)->cl; } /* if we have a filter class -> search up the inheritance hierarchy*/ if (fcl) { pl = TransitiveSuperClasses(fcl); if (pl && pl->nextPtr) { /* don't search on the start class again */ pl = pl->nextPtr; /* now go up the hierarchy */ for(; pl; pl = pl->nextPtr) { Tcl_Command pi = FindMethod(pl->cl->nsPtr, simpleName); if (pi) { CmdListAdd(filterList, pi, pl->cl, /*noDuplicates*/ 0, 1); /* fprintf(stderr, " %s::%s, ", ClassName(pl->cl), simpleName); */ } } } } } /*CmdListPrint(interp, "FilterComputeOrderFullList....\n", *filterList);*/ } /* * Computes a linearized order of object and class filter. Then * duplicates in the full list and with the class inheritance list of * 'obj' are eliminated. The precedence rule is that the last * occurrence makes it into the final list. */ static void FilterComputeOrder(Tcl_Interp *interp, NsfObject *object) { NsfCmdList *filterList = NULL, *next, *checker, *newList; NsfClasses *pl; if (object->filterOrder) FilterResetOrder(object); /* fprintf(stderr, " List: ", ObjectName(object)); */ /* * Append class filters registered for mixins. */ if (!(object->flags & NSF_MIXIN_ORDER_VALID)) { MixinComputeDefined(interp, object); } if (object->flags & NSF_MIXIN_ORDER_DEFINED_AND_VALID) { NsfCmdList *ml; NsfClass *mixin; for (ml = object->mixinOrder; ml; ml = ml->nextPtr) { mixin = NsfGetClassFromCmdPtr(ml->cmdPtr); if (mixin && mixin->opt && mixin->opt->classFilters) { FilterComputeOrderFullList(interp, &mixin->opt->classFilters, &filterList); } } } /* * Append per-obj filters. */ if (object->opt) { FilterComputeOrderFullList(interp, &object->opt->objFilters, &filterList); } /* * Append per-class filters. */ for (pl = TransitiveSuperClasses(object->cl); pl; pl = pl->nextPtr) { NsfClassOpt *clopt = pl->cl->opt; if (clopt && clopt->classFilters) { FilterComputeOrderFullList(interp, &clopt->classFilters, &filterList); } } /*fprintf(stderr, "\n");*/ /* * Use no duplicates & no classes of the precedence order * on the resulting list. */ while (filterList) { checker = next = filterList->nextPtr; while (checker) { if (checker->cmdPtr == filterList->cmdPtr) break; checker = checker->nextPtr; } if (checker == NULL) { newList = CmdListAdd(&object->filterOrder, filterList->cmdPtr, filterList->clorobj, /*noDuplicates*/ 0, 1); GuardAddInheritedGuards(interp, newList, object, filterList->cmdPtr); /* fprintf(stderr, " Adding %s::%s,\n", filterList->cmdPtr->nsPtr->fullName, Tcl_GetCommandName(interp, filterList->cmdPtr)); */ /* GuardPrint(interp, newList->clientData); */ } CmdListDeleteCmdListEntry(filterList, GuardDel); filterList = next; } /* fprintf(stderr, "\n"); */ } /* * The filter order is either * DEFINED (there are filter on the instance), * NONE (there are no filter for the instance), * or INVALID (a class restructuring has occurred, thus it is not clear * whether filters are defined or not). * If it is INVALID FilterComputeDefined can be used to compute the order * and set the instance to DEFINE or NONE. */ static void FilterComputeDefined(Tcl_Interp *interp, NsfObject *object) { FilterComputeOrder(interp, object); object->flags |= NSF_FILTER_ORDER_VALID; if (object->filterOrder) { object->flags |= NSF_FILTER_ORDER_DEFINED; } else { object->flags &= ~NSF_FILTER_ORDER_DEFINED; } } /* * push a filter stack information on this object */ static int FilterStackPush(NsfObject *object, Tcl_Obj *calledProc) { register NsfFilterStack *h = NEW(NsfFilterStack); h->currentCmdPtr = NULL; h->calledProc = calledProc; INCR_REF_COUNT(h->calledProc); h->nextPtr = object->filterStack; object->filterStack = h; return 1; } /* * pop a filter stack information on this object */ static void FilterStackPop(NsfObject *object) { register NsfFilterStack *h = object->filterStack; object->filterStack = h->nextPtr; /* free stack entry */ DECR_REF_COUNT(h->calledProc); FREE(NsfFilterStack, h); } /* * search through the filter list on obj and class hierarchy * for registration of a command ptr as filter * * returns a tcl obj list with the filter registration, like: * " filter , * " filter , * or an empty list, if not registered */ static Tcl_Obj * FilterFindReg(Tcl_Interp *interp, NsfObject *object, Tcl_Command cmd) { Tcl_Obj *list = Tcl_NewListObj(0, NULL); NsfClasses *pl; /* search per-object filters */ if (object->opt && CmdListFindCmdInList(cmd, object->opt->objFilters)) { Tcl_ListObjAppendElement(interp, list, object->cmdName); Tcl_ListObjAppendElement(interp, list, NsfGlobalObjs[NSF_OBJECT]); Tcl_ListObjAppendElement(interp, list, NsfGlobalObjs[NSF_FILTER]); Tcl_ListObjAppendElement(interp, list, Tcl_NewStringObj(Tcl_GetCommandName(interp, cmd), -1)); return list; } /* search per-class filters */ for (pl = TransitiveSuperClasses(object->cl); pl; pl = pl->nextPtr) { NsfClassOpt *opt = pl->cl->opt; if (opt && opt->classFilters) { if (CmdListFindCmdInList(cmd, opt->classFilters)) { Tcl_ListObjAppendElement(interp, list, pl->cl->object.cmdName); Tcl_ListObjAppendElement(interp, list, NsfGlobalObjs[NSF_FILTER]); Tcl_ListObjAppendElement(interp, list, Tcl_NewStringObj(Tcl_GetCommandName(interp, cmd), -1)); return list; } } } return list; } /* * before we can perform a filter dispatch, FilterSearchProc seeks the * current filter and the relevant calling information */ static Tcl_Command FilterSearchProc(Tcl_Interp *interp, NsfObject *object, Tcl_Command *currentCmd, NsfClass **cl) { NsfCmdList *cmdList; assert(object); assert(object->filterStack); *currentCmd = NULL; /* * Ensure that the filter order is not invalid, otherwise compute order * FilterComputeDefined(interp, object); */ assert(object->flags & NSF_FILTER_ORDER_VALID); cmdList = SeekCurrent(object->filterStack->currentCmdPtr, object->filterOrder); while (cmdList) { /*fprintf(stderr, "FilterSearchProc found %s\n", Tcl_GetCommandName(interp, (Tcl_Command)cmdList->cmdPtr));*/ if (Tcl_Command_cmdEpoch(cmdList->cmdPtr)) { cmdList = cmdList->nextPtr; } else if (FilterActiveOnObj(interp, object, cmdList->cmdPtr)) { /* fprintf(stderr, "Filter <%s> -- Active on: %s\n", Tcl_GetCommandName(interp, (Tcl_Command)cmdList->cmdPtr), ObjectName(object)); */ object->filterStack->currentCmdPtr = cmdList->cmdPtr; cmdList = SeekCurrent(object->filterStack->currentCmdPtr, object->filterOrder); } else { /* ok. we found it */ if (cmdList->clorobj && !NsfObjectIsClass(&cmdList->clorobj->object)) { *cl = NULL; } else { *cl = cmdList->clorobj; } *currentCmd = cmdList->cmdPtr; /* fprintf(stderr, "FilterSearchProc - found: %s, %p\n", Tcl_GetCommandName(interp, (Tcl_Command)cmdList->cmdPtr), cmdList->cmdPtr); */ return cmdList->cmdPtr; } } return NULL; } /* *---------------------------------------------------------------------- * SuperclassAdd -- * * Add a list of superclasses (specified in the argument vector) to * the specified class. On the first call, the class has no previous * superclasses. * * Results: * Tcl result code. * * Side effects: * Rearranging the class relations, flushing previous precedence orders. * *---------------------------------------------------------------------- */ static int SuperclassAdd(Tcl_Interp *interp, NsfClass *cl, int oc, Tcl_Obj **ov, Tcl_Obj *arg, NsfClass *baseClass) { NsfClasses *superClasses, *subClasses, *osl = NULL; NsfObjectSystem *osPtr; NsfClass **scl; int i, j; superClasses = TransitiveSuperClasses(cl); subClasses = TransitiveSubClasses(cl); /* * We have to remove all dependent superclass filter referenced * by class or one of its subclasses. * * Do not check the class "cl" itself (first entry in * filterCheck class list). */ if (superClasses) { superClasses = superClasses->nextPtr; } for (; superClasses; superClasses = superClasses->nextPtr) { FilterRemoveDependentFilterCmds(cl, superClasses->cl, subClasses); } /* * Invalidate all interceptors orders of instances of this and of all * depended classes. */ MixinInvalidateObjOrders(interp, cl, subClasses); if (FiltersDefined(interp) > 0) { FilterInvalidateObjOrders(interp, cl, subClasses); } /* * Build an array of superclasses from the argument vector. */ scl = NEW_ARRAY(NsfClass*, oc); for (i = 0; i < oc; i++) { if (GetClassFromObj(interp, ov[i], &scl[i], 1) != TCL_OK) { FREE(NsfClass**, scl); NsfClassListFree(subClasses); return NsfObjErrType(interp, "superclass", arg, "a list of classes", NULL); } } /* * Check that superclasses don't precede their classes. */ for (i = 0; i < oc; i++) { for (j = i+1; j < oc; j++) { NsfClasses *dl = TransitiveSuperClasses(scl[j]); dl = NsfClassListFind(dl, scl[i]); if (dl) { FREE(NsfClass**, scl); NsfClassListFree(subClasses); return NsfObjErrType(interp, "superclass", arg, "classes in dependence order", NULL); } } } /* * Ensure that the current class and new superclasses are from the * same object system. */ osPtr = GetObjectSystem(&cl->object); for (i = 0; i < oc; i++) { if (osPtr != GetObjectSystem(&scl[i]->object)) { NsfPrintError(interp, "class \"%s\" has a different object system as class \"%s\"", ClassName(cl), ClassName(scl[i])); NsfClassListFree(subClasses); FREE(NsfClass**, scl); return TCL_ERROR; } } while (cl->super) { /* * Build a backup of the old superclass list in case we need to revert. */ NsfClass *sc = cl->super->cl; NsfClasses *l = osl; osl = NEW(NsfClasses); osl->cl = sc; osl->nextPtr = l; (void)RemoveSuper(cl, cl->super->cl); } for (i=0; i < oc; i++) { AddSuper(cl, scl[i]); } FlushPrecedences(subClasses); NsfClassListFree(subClasses); FREE(NsfClass**, scl); if (unlikely(!TransitiveSuperClasses(cl))) { NsfClasses *l; /* * Cycle in the superclass graph, backtrack */ while (cl->super) { (void)RemoveSuper(cl, cl->super->cl); } for (l = osl; l; l = l->nextPtr) { AddSuper(cl, l->cl); } NsfClassListFree(osl); return NsfObjErrType(interp, "superclass", arg, "a cycle-free graph", NULL); } NsfClassListFree(osl); assert(cl->super); Tcl_ResetResult(interp); return TCL_OK; } /* *---------------------------------------------------------------------- * CheckVarName -- * * Check, whether the provided name is free of namespace markup. * * Results: * Tcl result code. * * Side effects: * none * *---------------------------------------------------------------------- */ static int CheckVarName(Tcl_Interp *interp, const char *varNameString) { /* * We want to have a plain variable name, since we do not want to * get interferences with namespace resolver and such. In an first * attempt, we disallowed occurrences of "::", but we have to deal as * well with e.g. arrayName(::x::y) * * TODO: more general and efficient solution to disallow e.g. a::b * (check for :: until parens) */ /*if (strstr(varNameString, "::") || *varNameString == ':') {*/ if (*varNameString == ':') { return NsfPrintError(interp, "variable name \"%s\" must not contain " "namespace separator or colon prefix", varNameString); } return TCL_OK; } static int VarExists(Tcl_Interp *interp, NsfObject *object, CONST char *varName, CONST char *index, int flags) { CallFrame frame, *framePtr = &frame; Var *varPtr, *arrayPtr; int result; Nsf_PushFrameObj(interp, object, framePtr); if (flags & NSF_VAR_TRIGGER_TRACE) { varPtr = TclVarTraceExists(interp, varName); } else { int flags = (index == NULL) ? TCL_PARSE_PART1 : 0; varPtr = TclLookupVar(interp, varName, index, flags, "access", /*createPart1*/ 0, /*createPart2*/ 0, &arrayPtr); } /* fprintf(stderr, "VarExists %s varPtr %p flags %.4x isundef %d\n", varName, varPtr, flags, varPtr ? TclIsVarUndefined(varPtr) : NULL); */ result = (varPtr && ((flags & NSF_VAR_REQUIRE_DEFINED) == 0 || !TclIsVarUndefined(varPtr))); if (result && (flags & NSF_VAR_ISARRAY) && !TclIsVarArray(varPtr)) { result = 0; } Nsf_PopFrameObj(interp, framePtr); return result; } #if defined(WITH_TCL_COMPILE) # include #endif static void MakeProcError( Tcl_Interp *interp, /* The interpreter in which the procedure was called. */ Tcl_Obj *procNameObj) /* Name of the procedure. Used for error * messages and trace information. */ { int overflow, limit = 60, nameLen; const char *procName; /*fprintf(stderr, "MakeProcError %p type %p refCount %d\n", procNameObj, procNameObj->typePtr, procNameObj->refCount);*/ procName = Tcl_GetStringFromObj(procNameObj, &nameLen); overflow = (nameLen > limit); Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( "\n (procedure \"%.*s%s\" line %d)", (overflow ? limit : nameLen), procName, (overflow ? "..." : ""), Tcl_GetErrorLine(interp))); } static int ByteCompiled(Tcl_Interp *interp, unsigned int *flagsPtr, Proc *procPtr, CONST char *procName) { Namespace *nsPtr = procPtr->cmdPtr->nsPtr; Tcl_Obj *bodyObj = procPtr->bodyPtr; if (likely(bodyObj->typePtr == Nsf_OT_byteCodeType)) { #if defined(HAVE_TCL_COMPILE_H) ByteCode *codePtr; Interp *iPtr = (Interp *) interp; /* * When we've got bytecode, this is the check for validity. That is, * the bytecode must be for the right interpreter (no cross-leaks!), * the code must be from the current epoch (so subcommand compilation * is up-to-date), the namespace must match (so variable handling * is right) and the resolverEpoch must match (so that new shadowed * commands and/or resolver changes are considered). */ codePtr = bodyObj->internalRep.otherValuePtr; if (unlikely(((Interp *) *codePtr->interpHandle != iPtr) || (codePtr->compileEpoch != iPtr->compileEpoch) || (codePtr->nsPtr != nsPtr) || (codePtr->nsEpoch != nsPtr->resolverEpoch))) { # if defined(VAR_RESOLVER_TRACE) fprintf(stderr, "ByteCompiled bytecode not valid proc %p cmd %p method %s\n", procPtr, procPtr->cmdPtr, Tcl_GetCommandName(interp, (Tcl_Command)procPtr->cmdPtr)); fprintf(stderr, " %d %d %d %d\n", ((Interp *) *codePtr->interpHandle != iPtr), (codePtr->compileEpoch != iPtr->compileEpoch), (codePtr->nsPtr != nsPtr), (codePtr->nsEpoch != nsPtr->resolverEpoch)); { CompiledLocal *localPtr = procPtr->firstLocalPtr; for (; localPtr != NULL; localPtr = localPtr->nextPtr) { fprintf(stderr, "... local %p '%s' resolveInfo %p deleteProc %p\n", localPtr, localPtr->name, localPtr->resolveInfo, localPtr->resolveInfo ? localPtr->resolveInfo->deleteProc : NULL); } } # endif /* dummy statement for coverage analysis */ assert(1); goto doCompilation; } #endif return TCL_OK; } else { int result; #if defined(HAVE_TCL_COMPILE_H) doCompilation: #endif *flagsPtr |= NSF_CSC_CALL_IS_COMPILE; result = TclProcCompileProc(interp, procPtr, bodyObj, (Namespace *) nsPtr, "body of proc", procName); *flagsPtr &= ~NSF_CSC_CALL_IS_COMPILE; return result; } } /* *---------------------------------------------------------------------- * PushProcCallFrame -- * * Set up and push a new call frame for the procedure invocation. * call-frame. The proc is passed via clientData. * * Results: * Tcl result code * * Side effects: * compiles body conditionally * *---------------------------------------------------------------------- */ static int PushProcCallFrame(Proc *procPtr, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], NsfCallStackContent *cscPtr) { Tcl_CallFrame *framePtr; int result; /* * Set up and push a new call frame for the new procedure invocation. * This call frame will execute in the proc's namespace, which might be * different than the current namespace. The proc's namespace is that of * its command, which can change if the command is renamed from one * namespace to another. */ /* TODO: we could use Tcl_PushCallFrame(), if we would allocate the tcl stack frame earlier */ result = TclPushStackFrame(interp, (Tcl_CallFrame **)&framePtr, (Tcl_Namespace *) procPtr->cmdPtr->nsPtr, (FRAME_IS_PROC|FRAME_IS_NSF_METHOD)); if (unlikely(result != TCL_OK)) { return result; } Tcl_CallFrame_objc(framePtr) = objc; Tcl_CallFrame_objv(framePtr) = objv; Tcl_CallFrame_procPtr(framePtr) = procPtr; Tcl_CallFrame_clientData(framePtr) = cscPtr; /*fprintf(stderr, "Stack Frame %p procPtr %p compiledLocals %p firstLocal %p\n", framePtr, procPtr, Tcl_CallFrame_compiledLocals(framePtr), procPtr->firstLocalPtr);*/ return ByteCompiled(interp, &cscPtr->flags, procPtr, ObjStr(objv[0])); } #include "nsfAPI.h" /*---------------------------------------------------------------------- * ParamsNew -- * * Allocate an array of Nsf_Param structures * * Results: * Pointer to allocated memory * * Side effects: * Allocation of memory. * *---------------------------------------------------------------------- */ static Nsf_Param * ParamsNew(int nr) { Nsf_Param *paramsPtr = NEW_ARRAY(Nsf_Param, nr+1); memset(paramsPtr, 0, sizeof(Nsf_Param)*(nr+1)); return paramsPtr; } /*---------------------------------------------------------------------- * ParamFree -- * * Deallocate the contents of a single Nsf_Param* * * Results: * None. * * Side effects: * Free the parameter definition. * *---------------------------------------------------------------------- */ static void ParamFree(Nsf_Param *paramPtr) { /*fprintf(stderr, "ParamFree %p\n", paramPtr);*/ if (paramPtr->name) {STRING_FREE("paramPtr->name", paramPtr->name);} if (paramPtr->nameObj) {DECR_REF_COUNT(paramPtr->nameObj);} if (paramPtr->defaultValue) {DECR_REF_COUNT(paramPtr->defaultValue);} if (paramPtr->converterName) {DECR_REF_COUNT2("converterNameObj", paramPtr->converterName);} if (paramPtr->converterArg) {DECR_REF_COUNT(paramPtr->converterArg);} if (paramPtr->paramObj) {DECR_REF_COUNT(paramPtr->paramObj);} if (paramPtr->slotObj) {DECR_REF_COUNT(paramPtr->slotObj);} if (paramPtr->method) {DECR_REF_COUNT(paramPtr->method);} } /*---------------------------------------------------------------------- * ParamsFree -- * * Deallocate a block of multiple Nsf_Param* * * Results: * None. * * Side effects: * Free the parameter definition. * *---------------------------------------------------------------------- */ static void ParamsFree(Nsf_Param *paramsPtr) { Nsf_Param *paramPtr; /*fprintf(stderr, "ParamsFree %p\n", paramsPtr);*/ for (paramPtr=paramsPtr; paramPtr->name; paramPtr++) { ParamFree(paramPtr); } FREE(Nsf_Param*, paramsPtr); } NSF_INLINE static NsfParamDefs * ParamDefsGet(Tcl_Command cmdPtr) { assert(cmdPtr); if (likely(Tcl_Command_deleteProc(cmdPtr) == NsfProcDeleteProc)) { return ((NsfProcContext *)Tcl_Command_deleteData(cmdPtr))->paramDefs; } return NULL; } /* *---------------------------------------------------------------------- * NsfProcDeleteProc -- * * FreeProc for procs with associated parameter definitions. * * Results: * None. * * Side effects: * Freeing memory. * *---------------------------------------------------------------------- */ static void NsfProcDeleteProc(ClientData clientData) { NsfProcContext *ctxPtr = (NsfProcContext *)clientData; if (ctxPtr->oldDeleteProc) { (*ctxPtr->oldDeleteProc)(ctxPtr->oldDeleteData); } if (ctxPtr->paramDefs) { /*fprintf(stderr, "free ParamDefs %p\n", ctxPtr->paramDefs);*/ ParamDefsRefCountDecr(ctxPtr->paramDefs); } /*fprintf(stderr, "free %p\n", ctxPtr);*/ FREE(NsfProcContext, ctxPtr); } /* *---------------------------------------------------------------------- * ParamDefsStore -- * * Store the provided parameter definitions in the provided * command. It stores a new deleteProc which will call the original * delete proc automatically. * * Results: * Tcl result code. * * Side effects: * None * *---------------------------------------------------------------------- */ static int ParamDefsStore(Tcl_Command cmd, NsfParamDefs *paramDefs) { Command *cmdPtr = (Command *)cmd; if (cmdPtr->deleteProc != NsfProcDeleteProc) { NsfProcContext *ctxPtr = NEW(NsfProcContext); /*fprintf(stderr, "ParamDefsStore %p replace deleteProc %p by %p\n", paramDefs, cmdPtr->deleteProc, NsfProcDeleteProc);*/ ctxPtr->oldDeleteData = (Proc *)cmdPtr->deleteData; ctxPtr->oldDeleteProc = cmdPtr->deleteProc; cmdPtr->deleteProc = NsfProcDeleteProc; ctxPtr->paramDefs = paramDefs; cmdPtr->deleteData = ctxPtr; return TCL_OK; } else { /*fprintf(stderr, "ParamDefsStore cmd %p has already NsfProcDeleteProc deleteData %p\n", cmd, cmdPtr->deleteData);*/ if (cmdPtr->deleteData) { NsfProcContext *ctxPtr = cmdPtr->deleteData; assert(ctxPtr->paramDefs == NULL); ctxPtr->paramDefs = paramDefs; } } return TCL_ERROR; } /* *---------------------------------------------------------------------- * ParamDefsNew -- * * Allocate a new paramDefs structure and initialize it with zeros. The * allocated structure should be freed with ParamDefsFree(). * * Results: * pointer to paramDefs structure * * Side effects: * Allocating memory * *---------------------------------------------------------------------- */ static NsfParamDefs * ParamDefsNew() { NsfParamDefs *paramDefs; static NsfMutex serialMutex = 0; static int serial = 0; paramDefs = NEW(NsfParamDefs); memset(paramDefs, 0, sizeof(NsfParamDefs)); /* We could keep the serial as well in thread local storage */ NsfMutexLock(&serialMutex); paramDefs->serial = serial++; NsfMutexUnlock(&serialMutex); /*fprintf(stderr, "ParamDefsNew %p\n", paramDefs);*/ return paramDefs; } /* *---------------------------------------------------------------------- * ParamDefsFree -- * * Actually free the parameter definitions. Since the parameter definitions * are ref-counted, this function should be just called via * ParamDefsRefCountDecr. * * Results: * None. * * Side effects: * Free the parameter definitions. * *---------------------------------------------------------------------- */ static void ParamDefsFree(NsfParamDefs *paramDefs) { /*fprintf(stderr, "ParamDefsFree %p slotObj %p returns %p\n", paramDefs, paramDefs->slotObj, paramDefs->returns);*/ if (paramDefs->paramsPtr) { ParamsFree(paramDefs->paramsPtr); } if (paramDefs->slotObj) {DECR_REF_COUNT2("paramDefsObj", paramDefs->slotObj);} if (paramDefs->returns) {DECR_REF_COUNT2("paramDefsObj", paramDefs->returns);} FREE(NsfParamDefs, paramDefs); } /* *---------------------------------------------------------------------- * ParamDefsRefCountIncr -- * ParamDefsRefCountDecr -- * * Perform book keeping on the parameter definitions. RefCounting is * necessary, since it might be possible that during the processing of the * e.g. object parameters, these might be redefined (when an object * parameter calls a method, redefining the * structures). ParamDefsRefCountDecr() is responsible for actually freeing * the structure. * * Results: * None. * * Side effects: * No direct. * *---------------------------------------------------------------------- */ static void ParamDefsRefCountIncr(NsfParamDefs *paramDefs) { assert(paramDefs); paramDefs->refCount ++; } static void ParamDefsRefCountDecr(NsfParamDefs *paramDefs) { paramDefs->refCount --; if (paramDefs->refCount < 1) { ParamDefsFree(paramDefs); } } /* *---------------------------------------------------------------------- * ParamDefsFormatOption -- * * Append a parameter option to the nameStringObj representing the * syntax of the parameter definition. * * Results: * None. * * Side effects: * none * *---------------------------------------------------------------------- */ static void ParamDefsFormatOption(Tcl_Obj *nameStringObj, CONST char *option, int *colonWritten, int *firstOption) { if (!*colonWritten) { Tcl_AppendLimitedToObj(nameStringObj, ":", 1, INT_MAX, NULL); *colonWritten = 1; } if (*firstOption) { *firstOption = 0; } else { Tcl_AppendLimitedToObj(nameStringObj, ",", 1, INT_MAX, NULL); } Tcl_AppendLimitedToObj(nameStringObj, option, -1, INT_MAX, NULL); } /* *---------------------------------------------------------------------- * ParamDefsFormat -- * * Produce a Tcl_Obj representing a single parameter in the syntax * of the parameter definition. * * Results: * Tcl_Obj * * Side effects: * None. * *---------------------------------------------------------------------- */ static Tcl_Obj * ParamDefsFormat(Tcl_Interp *interp, Nsf_Param CONST *paramsPtr) { int first, colonWritten; Tcl_Obj *listObj = Tcl_NewListObj(0, NULL), *innerListObj, *nameStringObj; Nsf_Param CONST *paramPtr; INCR_REF_COUNT2("paramDefsObj", listObj); for (paramPtr = paramsPtr; paramPtr->name; paramPtr++) { if (paramPtr->flags & NSF_ARG_NOCONFIG) { continue; } if (paramPtr -> paramObj) { innerListObj = paramPtr->paramObj; } else { /* * We need this part only for C-defined parameter definitions, defined * via genTclAPI. * * TODO: we could streamline this by defining as well C-API via the same * syntax as for accepted for tcl obj types "nsfParam" */ int isNonpos = *paramPtr->name == '-'; int outputRequired = (isNonpos && (paramPtr->flags & NSF_ARG_REQUIRED)); int outputOptional = (!isNonpos && !(paramPtr->flags & NSF_ARG_REQUIRED) && !paramPtr->defaultValue && paramPtr->converter != ConvertToNothing); first = 1; colonWritten = 0; nameStringObj = Tcl_NewStringObj(paramPtr->name, -1); if (paramPtr->type) { ParamDefsFormatOption(nameStringObj, paramPtr->type, &colonWritten, &first); } else if (isNonpos && paramPtr->nrArgs == 0) { ParamDefsFormatOption(nameStringObj, "switch", &colonWritten, &first); } if (outputRequired) { ParamDefsFormatOption(nameStringObj, "required", &colonWritten, &first); } else if (outputOptional) { ParamDefsFormatOption(nameStringObj, "optional", &colonWritten, &first); } if ((paramPtr->flags & NSF_ARG_SUBST_DEFAULT)) { ParamDefsFormatOption(nameStringObj, "substdefault", &colonWritten, &first); } if ((paramPtr->flags & NSF_ARG_ALLOW_EMPTY) || (paramPtr->flags & NSF_ARG_MULTIVALUED)) { char option[10] = "...."; option[0] = (paramPtr->flags & NSF_ARG_ALLOW_EMPTY) ? '0' : '1'; option[3] = (paramPtr->flags & NSF_ARG_MULTIVALUED) ? '*' : '1'; ParamDefsFormatOption(nameStringObj, option, &colonWritten, &first); } if ((paramPtr->flags & NSF_ARG_IS_CONVERTER)) { ParamDefsFormatOption(nameStringObj, "convert", &colonWritten, &first); } if ((paramPtr->flags & NSF_ARG_INITCMD)) { ParamDefsFormatOption(nameStringObj, "initcmd", &colonWritten, &first); } else if ((paramPtr->flags & NSF_ARG_CMD)) { ParamDefsFormatOption(nameStringObj, "cmd", &colonWritten, &first); } else if ((paramPtr->flags & NSF_ARG_ALIAS)) { ParamDefsFormatOption(nameStringObj, "alias", &colonWritten, &first); } else if ((paramPtr->flags & NSF_ARG_FORWARD)) { ParamDefsFormatOption(nameStringObj, "forward", &colonWritten, &first); } else if ((paramPtr->flags & NSF_ARG_NOARG)) { ParamDefsFormatOption(nameStringObj, "noarg", &colonWritten, &first); } else if ((paramPtr->flags & NSF_ARG_NOCONFIG)) { ParamDefsFormatOption(nameStringObj, "noconfig", &colonWritten, &first); } innerListObj = Tcl_NewListObj(0, NULL); Tcl_ListObjAppendElement(interp, innerListObj, nameStringObj); if (paramPtr->defaultValue) { Tcl_ListObjAppendElement(interp, innerListObj, paramPtr->defaultValue); } } Tcl_ListObjAppendElement(interp, listObj, innerListObj); } return listObj; } /* *---------------------------------------------------------------------- * ParamDefsList -- * * Produce a Tcl_ListObj containing the list of the parameters * based on a parameter structure. * * Results: * Tcl_Obj * * Side effects: * None. * *---------------------------------------------------------------------- */ static Tcl_Obj * ParamDefsList(Tcl_Interp *interp, Nsf_Param CONST *paramsPtr) { Tcl_Obj *listObj = Tcl_NewListObj(0, NULL); Nsf_Param CONST *paramPtr; INCR_REF_COUNT2("paramDefsObj", listObj); for (paramPtr = paramsPtr; paramPtr->name; paramPtr++) { if ((paramPtr->flags & NSF_ARG_NOCONFIG) == 0) { Tcl_ListObjAppendElement(interp, listObj, Tcl_NewStringObj(paramPtr->name, -1)); } } return listObj; } /* *---------------------------------------------------------------------- * ParamDefsNames -- * * Produce a Tcl_ListObj containing the names of the parameters * based on a parameter structure. * * Results: * Tcl_Obj * * Side effects: * None. * *---------------------------------------------------------------------- */ static Tcl_Obj * ParamDefsNames(Tcl_Interp *interp, Nsf_Param CONST *paramsPtr) { Tcl_Obj *listObj = Tcl_NewListObj(0, NULL); Nsf_Param CONST *paramPtr; INCR_REF_COUNT2("paramDefsObj", listObj); for (paramPtr = paramsPtr; paramPtr->name; paramPtr++) { if ((paramPtr->flags & NSF_ARG_NOCONFIG) == 0) { Tcl_ListObjAppendElement(interp, listObj, paramPtr->nameObj); } } return listObj; } /* *---------------------------------------------------------------------- * ParamGetType -- * * Obtain the type of a single parameter and return it as a string. * * Results: * Type of the parameter in form of a string * * Side effects: * None. * *---------------------------------------------------------------------- */ static CONST char * ParamGetType(Nsf_Param CONST *paramPtr) { CONST char *result = "value"; assert(paramPtr); if (paramPtr->type) { if (paramPtr->converter == ConvertViaCmd) { result = paramPtr->type + 5; } else if (paramPtr->converter == Nsf_ConvertToClass && (paramPtr->flags & (NSF_ARG_BASECLASS|NSF_ARG_METACLASS)) ) { if (paramPtr->flags & NSF_ARG_BASECLASS) { result = "baseclass"; } else { result = "metaclass"; } } else if (strcmp(paramPtr->type, "stringtype") == 0) { if (paramPtr->converterArg) { result = ObjStr(paramPtr->converterArg); } } else { result = paramPtr->type; } } return result; } /* *---------------------------------------------------------------------- * ParamGetDomain -- * * Obtain the domain of a single parameter and return it as a * string. The domain is an approximate type used in the parameter * syntax. * * Results: * Domain of the parameter in form of a string * * Side effects: * None. * *---------------------------------------------------------------------- */ static CONST char * ParamGetDomain(Nsf_Param CONST *paramPtr) { CONST char *result = "value"; assert(paramPtr); if ((paramPtr->flags & NSF_ARG_IS_ENUMERATION)) { enumeratorConverterEntry *ePtr; for (ePtr = &enumeratorConverterEntries[0]; ePtr->converter; ePtr++) { if (ePtr->converter == paramPtr->converter) { result = ePtr->domain; break; } } } else { result = ParamGetType(paramPtr); } return result; } /* *---------------------------------------------------------------------- * NsfParamDefsSyntaxOne -- * * Appends the formatted parameter (provided as 2nd argument) to the * content of the first argument. * * Results: * None * * Side effects: * Appending to first argument. * *---------------------------------------------------------------------- */ static void NsfParamDefsSyntaxOne(Tcl_Obj *argStringObj, Nsf_Param CONST *pPtr) { if (pPtr->nrArgs > 0 && *pPtr->name == '-') { Tcl_AppendLimitedToObj(argStringObj, pPtr->name, -1, INT_MAX, NULL); Tcl_AppendLimitedToObj(argStringObj, " ", 1, INT_MAX, NULL); if ((pPtr->flags & NSF_ARG_IS_ENUMERATION)) { Tcl_AppendLimitedToObj(argStringObj, ParamGetDomain(pPtr), -1, INT_MAX, NULL); if (pPtr->flags & NSF_ARG_MULTIVALUED) { Tcl_AppendLimitedToObj(argStringObj, " ...", 4, INT_MAX, NULL); } } else { Tcl_AppendLimitedToObj(argStringObj, "/", 1, INT_MAX, NULL); Tcl_AppendLimitedToObj(argStringObj, ParamGetDomain(pPtr), -1, INT_MAX, NULL); if (pPtr->flags & NSF_ARG_MULTIVALUED) { Tcl_AppendLimitedToObj(argStringObj, " ...", 4, INT_MAX, NULL); } Tcl_AppendLimitedToObj(argStringObj, "/", 1, INT_MAX, NULL); } } else if (*pPtr->name != '-') { Tcl_AppendLimitedToObj(argStringObj, "/", 1, INT_MAX, NULL); Tcl_AppendLimitedToObj(argStringObj, pPtr->name, -1, INT_MAX, NULL); Tcl_AppendLimitedToObj(argStringObj, "/", 1, INT_MAX, NULL); } else { Tcl_AppendLimitedToObj(argStringObj, pPtr->name, -1, INT_MAX, NULL); } } /* *---------------------------------------------------------------------- * NsfParamDefsSyntax -- * * Return the parameter definitions of a sequence of parameters in * the form of the "parametersyntax", inspired by the Tcl manual * pages. * * Results: * Tcl_Obj containing the parameter syntax * * Side effects: * None. * *---------------------------------------------------------------------- */ Tcl_Obj * NsfParamDefsSyntax(Nsf_Param CONST *paramsPtr) { Tcl_Obj *argStringObj = Tcl_NewObj(); Nsf_Param CONST *pPtr; INCR_REF_COUNT2("paramDefsObj", argStringObj); for (pPtr = paramsPtr; pPtr->name; pPtr++) { if ((pPtr->flags & NSF_ARG_NOCONFIG)) { /* * Don't output non-configurable parameters */ continue; } if (pPtr != paramsPtr) { /* * Don't output non-consuming parameters (i.e. positional, and no args) */ if (*pPtr->name != '-' && pPtr->nrArgs == 0) { continue; } Tcl_AppendLimitedToObj(argStringObj, " ", 1, INT_MAX, NULL); } if (pPtr->converter == ConvertToNothing && strcmp(pPtr->name, "args") == 0) { Tcl_AppendLimitedToObj(argStringObj, "?/arg .../?", 11, INT_MAX, NULL); } else if (pPtr->flags & NSF_ARG_REQUIRED) { if ((pPtr->flags & NSF_ARG_IS_ENUMERATION)) { Tcl_AppendLimitedToObj(argStringObj, ParamGetDomain(pPtr), -1, INT_MAX, NULL); } else { NsfParamDefsSyntaxOne(argStringObj, pPtr); } } else { Tcl_AppendLimitedToObj(argStringObj, "?", 1, INT_MAX, NULL); NsfParamDefsSyntaxOne(argStringObj, pPtr); Tcl_AppendLimitedToObj(argStringObj, "?", 1, INT_MAX, NULL); } } /* caller has to decr */ return argStringObj; } /* *---------------------------------------------------------------------- * ParsedParamFree -- * * Free the provided information of the parsed parameters. * * Results: * None. * * Side effects: * Freed Memory. * *---------------------------------------------------------------------- */ static void ParsedParamFree(NsfParsedParam *parsedParamPtr) { /*fprintf(stderr, "ParsedParamFree %p, npargs %p\n", parsedParamPtr, parsedParamPtr->paramDefs);*/ if (parsedParamPtr->paramDefs) { ParamDefsRefCountDecr(parsedParamPtr->paramDefs); } FREE(NsfParsedParam, parsedParamPtr); } /* * method dispatch */ /* *---------------------------------------------------------------------- * ProcMethodDispatchFinalize -- * * Finalization function for ProcMethodDispatch which executes * scripted methods. Essentially it handles post-assertions and * frees per-invocation memory. The function was developed for NRE * enabled Tcl versions but is used in the same way for non-NRE * enabled versions. * * Results: * Tcl result code. * * Side effects: * indirect effects by calling Tcl code * *---------------------------------------------------------------------- */ static int ProcMethodDispatchFinalize(ClientData data[], Tcl_Interp *interp, int result) { ParseContext *pcPtr = data[0]; /*CONST char *methodName = data[2];*/ #if defined(NSF_WITH_ASSERTIONS) || defined(NRE) NsfCallStackContent *cscPtr = data[1]; #endif #if defined(NSF_WITH_ASSERTIONS) NsfObject *object = cscPtr->self; NsfObjectOpt *opt = object->opt; #endif /*fprintf(stderr, "ProcMethodDispatchFinalize %s %s flags %.6x isNRE %d pcPtr %p\n", ObjectName(object), methodName, cscPtr->flags, (cscPtr->flags & NSF_CSC_CALL_IS_NRE), pcPtr);*/ #if defined(NSF_WITH_ASSERTIONS) if (unlikely(opt && object->teardown && (opt->checkoptions & CHECK_POST))) { int rc; /* * Even, when the returned result != TCL_OK, run assertion to report * the highest possible method from the call-stack (e.g. "set" would not * be very meaningful; however, do not flush a TCL_ERROR. */ rc = AssertionCheck(interp, object, cscPtr->cl, data[2], CHECK_POST); if (result == TCL_OK) { result = rc; } } #endif #if defined(NRE) if (likely(cscPtr->flags & NSF_CSC_CALL_IS_NRE)) { if (likely(pcPtr != NULL)) { ParseContextRelease(pcPtr); NsfTclStackFree(interp, pcPtr, "release parse context"); } result = ObjectDispatchFinalize(interp, cscPtr, result /*, "NRE" , methodName*/); CscFinish(interp, cscPtr, result, "scripted finalize"); } #else if (unlikely(pcPtr != NULL)) { ParseContextRelease(pcPtr); } #endif return result; } /* *---------------------------------------------------------------------- * ProcDispatchFinalize -- * * Finalization function for nsf::proc. Simplified version of * ProcMethodDispatchFinalize(). * * Results: * Tcl result code. * * Side effects: * indirect effects by calling Tcl code * *---------------------------------------------------------------------- */ static int ProcDispatchFinalize(ClientData data[], Tcl_Interp *interp, int result) { ParseContext *pcPtr = data[1]; /*CONST char *methodName = data[0]; fprintf(stderr, "ProcDispatchFinalize of method %s\n", methodName);*/ # if defined(NSF_PROFILE) long int startUsec = (long int)data[2]; long int startSec = (long int)data[3]; char *methodName = data[0]; NsfRuntimeState *rst = RUNTIME_STATE(interp); if (rst->doProfile) { NsfProfileRecordProcData(interp, methodName, startSec, startUsec); } # endif ParseContextRelease(pcPtr); NsfTclStackFree(interp, pcPtr, "nsf::proc dispatch finalize release parse context"); return result; } /* *---------------------------------------------------------------------- * ProcMethodDispatch -- * * Invoke a scripted method (with assertion checking and filters). * * Results: * Tcl result code. * * Side effects: * Indirect effects by calling Tcl code * *---------------------------------------------------------------------- */ static int ProcMethodDispatch(ClientData cp, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], CONST char *methodName, NsfObject *object, NsfClass *cl, Tcl_Command cmdPtr, NsfCallStackContent *cscPtr) { int result, releasePc = 0; NsfParamDefs *paramDefs; #if defined(NSF_WITH_ASSERTIONS) NsfObjectOpt *opt = object->opt; #endif #if defined(NRE) ParseContext *pcPtr = NULL; #else ParseContext pc, *pcPtr = &pc; #endif assert(object); assert(object->teardown); #if defined(NRE) /*fprintf(stderr, "ProcMethodDispatch cmd %s\n", Tcl_GetCommandName(interp, cmdPtr));*/ assert(cscPtr->flags & NSF_CSC_CALL_IS_NRE); #endif /* * If this is a filter, check whether its guard applies, * if not: just step forward to the next filter */ if (unlikely(cscPtr->frameType == NSF_CSC_TYPE_ACTIVE_FILTER)) { NsfCmdList *cmdList; /* * seek cmd in obj's filterOrder */ assert(object->flags & NSF_FILTER_ORDER_VALID); /* otherwise: FilterComputeDefined(interp, object);*/ for (cmdList = object->filterOrder; cmdList && cmdList->cmdPtr != cmdPtr; cmdList = cmdList->nextPtr); if (cmdList) { /* * A filter was found, check whether it has a guard. */ result = GuardCall(object, interp, cmdList->clientData, cscPtr); if (result != TCL_OK) { /*fprintf(stderr, "Filter GuardCall in invokeProc returned %d\n", result);*/ if (result != TCL_ERROR) { /* * The guard failed (but no error), and we call "next". * Since we may not be in a method with already provided * arguments, we call next with the actual arguments and * perform no argument substitution. * * The call stack content is not jet pushed to the Tcl * stack, we pass it already to search-and-invoke. */ /*fprintf(stderr, "... calling nextmethod cscPtr %p\n", cscPtr);*/ result = NextSearchAndInvoke(interp, methodName, objc, objv, cscPtr, 0); /*fprintf(stderr, "... after nextmethod result %d\n", result);*/ } /* * Next might have succeeded or not, but we are done. In the * NRE-case, we need a CscFinish for all return codes. */ #if defined(NRE) CscFinish(interp, cscPtr, result, "guard failed"); #endif return result; } } } #if defined(NSF_WITH_ASSERTIONS) if (unlikely(opt && (opt->checkoptions & CHECK_PRE)) && (result = AssertionCheck(interp, object, cl, methodName, CHECK_PRE)) == TCL_ERROR) { goto prep_done; } #endif /* * If the method to be invoked has paramDefs, we have to call the * argument parser with the argument definitions obtained from the * proc context from the cmdPtr. */ paramDefs = ParamDefsGet(cmdPtr); if (paramDefs && paramDefs->paramsPtr) { #if defined(NRE) pcPtr = (ParseContext *) NsfTclStackAlloc(interp, sizeof(ParseContext), "parse context"); #endif result = ProcessMethodArguments(pcPtr, interp, object, NSF_ARGPARSE_METHOD_PUSH|NSF_ARGPARSE_FORCE_REQUIRED, paramDefs, objv[0], objc, objv); cscPtr->objc = objc; cscPtr->objv = (Tcl_Obj **)objv; if (likely(result == TCL_OK)) { releasePc = 1; result = PushProcCallFrame(cp, interp, pcPtr->objc+1, pcPtr->full_objv, cscPtr); } else { /* * some error occurred */ #if defined(NRE) ParseContextRelease(pcPtr); NsfTclStackFree(interp, pcPtr, "parse context (proc prep failed)"); pcPtr = NULL; #else ParseContextRelease(pcPtr); #endif } } else { result = PushProcCallFrame(cp, interp, objc, objv, cscPtr); } /* * The stack frame is pushed, we could do something here before * running the byte code of the body. */ /* we could consider to run here ARG_METHOD or ARG_INITCMD if (result == TCL_OK) { } */ #if defined(NSF_WITH_ASSERTIONS) prep_done: #endif if (likely(result == TCL_OK)) { #if defined(NRE) /*fprintf(stderr, "CALL TclNRInterpProcCore %s method '%s'\n", ObjectName(object), ObjStr(objv[0]));*/ Tcl_NRAddCallback(interp, ProcMethodDispatchFinalize, releasePc ? pcPtr : NULL, cscPtr, (ClientData)methodName, NULL); cscPtr->flags |= NSF_CSC_CALL_IS_NRE; result = TclNRInterpProcCore(interp, objv[0], 1, &MakeProcError); #else ClientData data[3] = { releasePc ? pcPtr : NULL, cscPtr, (ClientData)methodName }; result = TclObjInterpProcCore(interp, objv[0], 1, &MakeProcError); result = ProcMethodDispatchFinalize(data, interp, result); #endif } else /* result != OK */ { #if defined(NRE) CscFinish(interp, cscPtr, result, "nre, prep failed"); #endif } return result; } /* *---------------------------------------------------------------------- * CmdMethodDispatch -- * * Invoke a method implemented as a cmd. Essentially it stacks * optionally a frame, calls the method, pops the frame and runs * invariants. * * Results: * Tcl result code. * * Side effects: * Indirect effects by calling cmd * *---------------------------------------------------------------------- */ static int CmdMethodDispatch(ClientData cp, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], NsfObject *object, Tcl_Command cmd, NsfCallStackContent *cscPtr) { CallFrame frame, *framePtr = &frame; int result; assert(cmd); assert(object); assert(object->teardown); #if defined(NRE) assert(!cscPtr || (cscPtr->flags & NSF_CSC_CALL_IS_NRE) == 0); #endif if (cscPtr) { /* * We have a call-stack content, but the requested dispatch will not store * the call-stack content in a corresponding call-frame on its own. To get, * for example, self introspection working for the requested dispatch, we * introduce a CMETHOD frame. */ /*fprintf(stderr, "Nsf_PushFrameCsc %s %s\n", ObjectName(object), Tcl_GetCommandName(cmd));*/ Nsf_PushFrameCsc(interp, cscPtr, framePtr); result = Tcl_NRCallObjProc(interp, Tcl_Command_objProc(cmd), cp, objc, objv); Nsf_PopFrameCsc(interp, framePtr); } else { result = Tcl_NRCallObjProc(interp, Tcl_Command_objProc(cmd), cp, objc, objv); } #if defined(NSF_WITH_ASSERTIONS) if (unlikely(object->opt != NULL)) { CheckOptions co = object->opt->checkoptions; if ((co & CHECK_INVAR)) { result = AssertionCheckInvars(interp, object, Tcl_GetCommandName(interp, cmd), co); } } #endif /* * Reference counting in the calling ObjectDispatch() makes sure * that obj->opt is still accessible even after "dealloc" */ return result; } /* *---------------------------------------------------------------------- * ObjectCmdMethodDispatch -- * * Invoke a method implemented as an object. The referenced object is used * as a source for methods to be executed. Essentially this is currently * primarily used to implement the dispatch of ensemble objects. * * Results: * Tcl result code. * * Side effects: * Indirect effects by calling cmd * *---------------------------------------------------------------------- */ static int ObjectCmdMethodDispatch(NsfObject *invokedObject, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], CONST char *methodName, NsfObject *callerSelf, NsfCallStackContent *cscPtr) { CallFrame frame, *framePtr = &frame; Tcl_Command cmd = cscPtr->cmdPtr, subMethodCmd; CONST char *subMethodName; NsfObject *actualSelf; NsfClass *actualClass; int result; /*fprintf(stderr, "ObjectCmdMethodDispatch %p %s\n", cmd, Tcl_GetCommandName(interp, cmd));*/ assert(invokedObject); /*fprintf(stderr, "ObjectCmdMethodDispatch method %s invokedObject %p %s callerSelf %p %s\n", methodName, invokedObject, ObjectName(invokedObject), callerSelf, ObjectName(callerSelf));*/ if (unlikely(invokedObject->flags & NSF_DELETED)) { /* * When we try to invoke a deleted object, the cmd (alias) is * automatically removed. Note that the cmd might be still referenced * in various entries in the call-stack. The reference counting on * these elements takes care that the cmdPtr is deleted on a pop * operation (although we do a Tcl_DeleteCommandFromToken() below. */ /*fprintf(stderr, "methodName %s found DELETED object with cmd %p my cscPtr %p\n", methodName, cmd, cscPtr);*/ Tcl_DeleteCommandFromToken(interp, cmd); if (cscPtr->cl) { NsfInstanceMethodEpochIncr("DeleteObjectAlias"); } else { NsfObjectMethodEpochIncr("DeleteObjectAlias"); } NsfCleanupObject(invokedObject, "alias-delete1"); return NsfPrintError(interp, "trying to dispatch deleted object via method '%s'", methodName); } /* * Check, if the object cmd was called without a reference to a method. If * so, perform the standard dispatch of default methods. */ if (unlikely(objc < 2)) { if ((invokedObject->flags & NSF_PER_OBJECT_DISPATCH) != 0) { cscPtr->flags |= NSF_CSC_CALL_IS_ENSEMBLE; } Nsf_PushFrameCsc(interp, cscPtr, framePtr); result = DispatchDefaultMethod(interp, invokedObject, objv[0], NSF_CSC_IMMEDIATE); Nsf_PopFrameCsc(interp, framePtr); return result; } /* * Check, if we want NSF_KEEP_CALLER_SELF. The setting of this flag * determines the values of actualSelf and actualClass. */ if (invokedObject->flags & NSF_KEEP_CALLER_SELF) { actualSelf = callerSelf; actualClass = cscPtr->cl; } else { actualSelf = invokedObject; actualClass = NULL; } subMethodName = ObjStr(objv[1]); if ((invokedObject->flags & NSF_PER_OBJECT_DISPATCH) == 0) { /*fprintf(stderr, "invokedObject %p %s methodName %s: no perobjectdispatch\n", invokedObject, ObjectName(invokedObject), methodName);*/ #if 0 /* * We should have either an approach * - to obtain from an object to methodname the cmd, and * call e.g. MethodDispatch(), or pass a fully qualified * method name, or * - to pass an the actualSelf and invokedObject both * to MethodDispatch/MethodDispatch * TODO: maybe remove NSF_CM_KEEP_CALLER_SELF when done. */ //yyyy; result = MethodDispatch(object, interp, nobjc+1, nobjv-1, cmd, object, NULL /*NsfClass *cl*/, Tcl_GetCommandName(interp, cmd), NSF_CSC_TYPE_PLAIN, flags); #endif #if 1 /* simple and brutal */ if (likely(invokedObject->nsPtr != NULL)) { subMethodCmd = FindMethod(invokedObject->nsPtr, subMethodName); } else { subMethodCmd = NULL; } if (subMethodCmd == NULL) { /* no -system handling */ actualClass = SearchPLMethod(invokedObject->cl->order, subMethodName, &subMethodCmd, NSF_CMD_CALL_PRIVATE_METHOD); } if (likely(subMethodCmd != NULL)) { cscPtr->objc = objc; cscPtr->objv = objv; Nsf_PushFrameCsc(interp, cscPtr, framePtr); result = MethodDispatch(actualSelf, interp, objc-1, objv+1, subMethodCmd, actualSelf, actualClass, subMethodName, cscPtr->frameType|NSF_CSC_TYPE_ENSEMBLE, (cscPtr->flags & 0xFF)|NSF_CSC_IMMEDIATE); Nsf_PopFrameCsc(interp, framePtr); return result; } /*fprintf(stderr, "... objv[0] %s cmd %p %s csc %p\n", ObjStr(objv[0]), subMethodCmd, subMethodName, cscPtr); */ if (0) { fprintf(stderr, "new unknown\n"); return DispatchUnknownMethod(interp, invokedObject, /* objc-1, objv+1*/ objc, objv, actualSelf->cmdName, objv[1], NSF_CM_NO_OBJECT_METHOD|NSF_CSC_IMMEDIATE); } #endif return ObjectDispatch(actualSelf, interp, objc, objv, NSF_CM_KEEP_CALLER_SELF); } /* * NSF_PER_OBJECT_DISPATCH is set */ if (likely(invokedObject->nsPtr != NULL)) { subMethodCmd = FindMethod(invokedObject->nsPtr, subMethodName); } else { subMethodCmd = NULL; } /* * Make sure, that the current call is marked as an ensemble call, both * for dispatching to the default-method and for dispatching the method * interface of the given object. Otherwise, current introspection * specific to sub-methods fails (e.g., a [current method-path] in the * default-method). */ cscPtr->flags |= NSF_CSC_CALL_IS_ENSEMBLE; /* fprintf(stderr, "ensemble dispatch cp %s %s objc %d\n", ObjectName((NsfObject*)cp), methodName, objc);*/ cscPtr->objc = objc; cscPtr->objv = objv; Nsf_PushFrameCsc(interp, cscPtr, framePtr); /*fprintf(stderr, "... objv[0] %s cmd %p %s csc %p\n", ObjStr(objv[0]), subMethodCmd, subMethodName, cscPtr); */ if (likely(subMethodCmd != NULL)) { /* * In order to allow [next] to be called in an ensemble method, * an extra call-frame is needed. This CSC frame is typed as * NSF_CSC_TYPE_ENSEMBLE. Note that the associated call is flagged * additionally (NSF_CSC_CALL_IS_ENSEMBLE; see above) to be able * to identify ensemble-specific frames during [next] execution. * * The dispatch requires NSF_CSC_IMMEDIATE to be set, ensuring * that scripted methods are executed before the ensemble ends. If * they were executed later, they would find their parent frame * (CMETHOD) being popped from the stack already. */ /*fprintf(stderr, ".... ensemble dispatch object %s self %s pass %s\n", ObjectName(object), ObjectName(self), (self->flags & NSF_KEEP_CALLER_SELF) ? "callerSelf" : "invokedObject"); fprintf(stderr, ".... ensemble dispatch on %s.%s objflags %.8x cscPtr %p base flags %.6x flags %.6x cl %s\n", ObjectName(actualSelf), subMethodName, self->flags, cscPtr, (0xFF & cscPtr->flags), (cscPtr->flags & 0xFF)|NSF_CSC_IMMEDIATE, actualClass ? ClassName(actualClass) : "NONE");*/ result = MethodDispatch(actualSelf, interp, objc-1, objv+1, subMethodCmd, actualSelf, actualClass, subMethodName, cscPtr->frameType|NSF_CSC_TYPE_ENSEMBLE, (cscPtr->flags & 0xFF)|NSF_CSC_IMMEDIATE); /*if (result != TCL_OK) { fprintf(stderr, "ERROR: cmd %p %s subMethodName %s // %s // %s\n", subMethodCmd, Tcl_GetCommandName(interp, subMethodCmd), subMethodName, Tcl_GetCommandName(interp, cscPtr->cmdPtr), ObjStr(Tcl_GetObjResult(interp))); }*/ } else { /* * The method to be called was not part of this ensemble. Call * next to try to call such methods along the next path. */ Tcl_CallFrame *framePtr1; NsfCallStackContent *cscPtr1 = CallStackGetTopFrame(interp, &framePtr1); /*fprintf(stderr, "call next instead of unknown %s.%s \n", ObjectName(cscPtr->self), methodName);*/ assert(cscPtr1); if ((cscPtr1->frameType & NSF_CSC_TYPE_ENSEMBLE)) { /* * We are in an ensemble method. The next works here not on the * actual methodName + frame, but on the ensemble above it. We * locate the appropriate call-stack content and continue next on * that. */ cscPtr1 = CallStackFindEnsembleCsc(framePtr1, &framePtr1); assert(cscPtr1); } /* * The method name for next might be colon-prefixed. In * these cases, we have to skip the single colon. */ result = NextSearchAndInvoke(interp, MethodName(cscPtr1->objv[0]), cscPtr1->objc, cscPtr1->objv, cscPtr1, 0); /*fprintf(stderr, "==> next %s.%s (obj %s) csc %p returned %d unknown %d\n", ObjectName(self), methodName, ObjectName(object), cscPtr, result, RUNTIME_STATE(interp)->unknown); */ if (RUNTIME_STATE(interp)->unknown) { /* * Unknown handling: We trigger a dispatch to an unknown method. The * appropriate unknown handler is either provided for the current * object (at the class or the mixin level), or the default unknown * handler takes it from there. The application-level unknown * handler cannot determine the top-level calling object (referred * to as the delegator). Therefore, we assemble all the necessary * call data as the first argument passed to the unknown * handler. Call data include the calling object (delegator), the * method path, and the unknown final method. */ Tcl_Obj *callInfoObj = Tcl_NewListObj(1, &callerSelf->cmdName); Tcl_Obj *methodPathObj = CallStackMethodPath(interp, (Tcl_CallFrame *)framePtr); INCR_REF_COUNT(methodPathObj); Tcl_ListObjAppendList(interp, callInfoObj, methodPathObj); Tcl_ListObjAppendElement(interp, callInfoObj, Tcl_NewStringObj(MethodName(objv[0]), -1)); Tcl_ListObjAppendElement(interp, callInfoObj, objv[1]); DECR_REF_COUNT(methodPathObj); result = DispatchUnknownMethod(interp, invokedObject, objc-1, objv+1, callInfoObj, objv[1], NSF_CM_NO_OBJECT_METHOD|NSF_CSC_IMMEDIATE); } } Nsf_PopFrameCsc(interp, framePtr); return result; } #if !defined(NSF_ASSEMBLE) static int NsfAsmProc(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) { return TCL_OK; } #endif /* *---------------------------------------------------------------------- * CheckCStack -- * * Monitor the growth of the C Stack when complied with * NSF_STACKCHECK. * * Results: * none * * Side effects: * update of rst->bottomOfStack * *---------------------------------------------------------------------- */ #if defined(NSF_STACKCHECK) NSF_INLINE static void CheckCStack(Tcl_Interp *interp, CONST char *prefix, CONST char *fullMethodName) { int somevar; NsfRuntimeState *rst = RUNTIME_STATE(interp); if (rst->exitHandlerDestroyRound == NSF_EXITHANDLER_OFF) { # if TCL_STACK_GROWS_UP if ((void *)&somevar < rst->bottomOfStack) { NsfLog(interp, NSF_LOG_WARN, "Stack adjust bottom %ld - %s %s", (void *)&somevar - rst->bottomOfStack, prefix, fullMethodName); rst->bottomOfStack = (void *)&somevar; } else if ((void *)&somevar > rst->maxStack) { NsfLog(interp, NSF_LOG_WARN, "Stack adjust top %ld - %s %s", (void *)&somevar - rst->bottomOfStack, prefix, fullMethodName); rst->maxStack = (void *)&somevar; } # else if ((void *)&somevar > rst->bottomOfStack) { NsfLog(interp, NSF_LOG_WARN, "Stack adjust bottom %ld - %s %s", rst->bottomOfStack - (void *)&somevar, prefix, fullMethodName); rst->bottomOfStack = (void *)&somevar; } else if ((void *)&somevar < rst->maxStack) { NsfLog(interp, NSF_LOG_WARN, "Stack adjust top %ld - %s %s", rst->bottomOfStack - (void *)&somevar, prefix, fullMethodName); rst->maxStack = (void *)&somevar; } # endif } } #else # define CheckCStack(interp, prefix, methodName) #endif /* *---------------------------------------------------------------------- * MethodDispatchCsc -- * * Dispatch a method (scripted or cmd) with an already allocated * call stack content. The method calls either ProcMethodDispatch() * (for scripted methods) or CmdMethodDispatch() (otherwise). * * Results: * Tcl result code. * * Side effects: * Indirect effects by calling methods * *---------------------------------------------------------------------- */ static int MethodDispatchCsc(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], Tcl_Command cmd, NsfCallStackContent *cscPtr, CONST char *methodName, int *validCscPtr) { NsfObject *object = cscPtr->self; ClientData cp = Tcl_Command_objClientData(cmd); Tcl_ObjCmdProc *proc = Tcl_Command_objProc(cmd); NsfCallStackContent *cscPtr1; /* * Privide DTrace with calling info */ if (NSF_DTRACE_METHOD_ENTRY_ENABLED()) { NSF_DTRACE_METHOD_ENTRY(ObjectName(object), cscPtr->cl ? ClassName(cscPtr->cl) : ObjectName(object), (char *)methodName, objc-1, (Tcl_Obj **)objv+1); } /*fprintf(stderr, "MethodDispatch method '%s' cmd %p %s clientData %p cp=%p objc=%d cscPtr %p csc->flags %.6x \n", methodName, cmd, Tcl_GetCommandName(interp, cmd), clientData, cp, objc, cscPtr, cscPtr->flags);*/ /*fprintf(stderr, "MethodDispatch method '%s' cmd %p cp=%p objc=%d cscPtr %p csc->flags %.6x " "obj->flags %.6x teardown %p\n", methodName, cmd, cp, objc, cscPtr, cscPtr->flags, object->flags, object->teardown);*/ assert(object->teardown); /* * The default assumption is that the CscPtr is valid after this function * finishes. */ if (likely(proc == TclObjInterpProc)) { int result; #if defined(NRE) NRE_callback *rootPtr = TOP_CB(interp); int isImmediate = (cscPtr->flags & NSF_CSC_IMMEDIATE); # if defined(NRE_CALLBACK_TRACE) NsfClass *cl = cscPtr->cl; # endif #endif /* * The cmd is a scripted method */ result = ProcMethodDispatch(cp, interp, objc, objv, methodName, object, cscPtr->cl, cmd, cscPtr); #if defined(NRE) /* * In the NRE case, there is no trust in the cscPtr anymore, it might be already gone. */ *validCscPtr = 0; if (unlikely(isImmediate)) { # if defined(NRE_CALLBACK_TRACE) fprintf(stderr, ".... manual run callbacks rootPtr = %p, result %d methodName %s.%s\n", rootPtr, result, cl?ClassName(cl):"NULL", methodName); # endif result = NsfNRRunCallbacks(interp, result, rootPtr); } else { # if defined(NRE_CALLBACK_TRACE) fprintf(stderr, ".... don't run callbacks rootPtr = %p, result %d methodName %s.%s\n", rootPtr, result, cl?ClassName(cl):"NULL", methodName); # endif } #endif /* * scripted method done */ return result; } else if (proc == NsfObjDispatch) { assert(cp); return ObjectCmdMethodDispatch((NsfObject *)cp, interp, objc, objv, methodName, object, cscPtr); } else if (cp) { cscPtr1 = cscPtr; /*fprintf(stderr, "cscPtr %p cmd %p %s wanna stack cmd %p %s cp %p no-leaf %d force frame %d\n", cscPtr, cmd, Tcl_GetCommandName(interp, cmd), cmd, Tcl_GetCommandName(interp, cmd), cp, (Tcl_Command_flags(cmd) & NSF_CMD_NONLEAF_METHOD), (cscPtr->flags & NSF_CSC_FORCE_FRAME));*/ /* * The cmd has client data, we check for required updates in this * structure. */ if (proc == NsfForwardMethod || proc == NsfObjscopedMethod || proc == NsfSetterMethod || proc == NsfAsmProc ) { TclCmdClientData *tcd = (TclCmdClientData *)cp; assert(tcd); tcd->object = object; assert((CmdIsProc(cmd) == 0)); } else if (cp == (ClientData)NSF_CMD_NONLEAF_METHOD) { cp = clientData; assert((CmdIsProc(cmd) == 0)); } #if !defined(NDEBUG) else if (proc == NsfProcAliasMethod) { /* This should never happen */ Tcl_Panic("Alias invoked in unexpected way"); } #endif } else if ((Tcl_Command_flags(cmd) & NSF_CMD_NONLEAF_METHOD) || (cscPtr->flags & NSF_CSC_FORCE_FRAME)) { /* * Technically, we would not need a frame to execute the cmd, but maybe, * the user want's it (to be able to call next, or the keep proc-level * variables. The clientData cp is in such cases typically NULL. */ /*fprintf(stderr, "FORCE_FRAME\n");*/ cscPtr1 = cscPtr; } else { /* * There is no need to pass a frame. Use the original clientData. */ cscPtr1 = NULL; } if (cscPtr1) { /* * Call with a stack frame. */ /*fprintf(stderr, "cmdMethodDispatch %s.%s, cscPtr %p objflags %.6x\n", ObjectName(object), methodName, cscPtr, object->flags); */ return CmdMethodDispatch(cp, interp, objc, objv, object, cmd, cscPtr1); } else { /* * Call without a stack frame. */ CscListAdd(interp, cscPtr); /*fprintf(stderr, "cmdMethodDispatch %p %s.%s, nothing stacked, objflags %.6x\n", cmd, ObjectName(object), methodName, object->flags); */ return CmdMethodDispatch(clientData, interp, objc, objv, object, cmd, NULL); } } /* *---------------------------------------------------------------------- * MethodDispatch -- * * Convenience wrapper for MethodDispatchCsc(). It allocates a call * stack content and invokes MethodDispatchCsc. * * Results: * Tcl result code. * * Side effects: * Indirect effects by calling methods * *---------------------------------------------------------------------- */ static int MethodDispatch(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], Tcl_Command cmd, NsfObject *object, NsfClass *cl, CONST char *methodName, int frameType, int flags) { NsfCallStackContent csc, *cscPtr; int result, validCscPtr = 1; Tcl_Command resolvedCmd; assert (object->teardown); assert (cmd); CheckCStack(interp, "method", methodName); /*fprintf(stderr, "MethodDispatch method '%s.%s' objc %d flags %.6x\n", ObjectName(object), methodName, objc, flags); */ resolvedCmd = AliasDereference(interp, object, methodName, cmd); if (unlikely(resolvedCmd == NULL)) { return TCL_ERROR; } /* * cscAlloc uses for resolvedCmd for allocating the call stack content and * sets the IS_NRE flag based on it. We use the original cmd in the * callstack content structure for introspection. */ cscPtr = CscAlloc(interp, &csc, resolvedCmd); /* * We would not need CscInit when * cp == NULL && !(Tcl_Command_flags(cmd) & NSF_CMD_NONLEAF_METHOD) * TODO: We could pass cmd==NULL, but is this worth it? */ CscInit(cscPtr, object, cl, cmd, frameType, flags, methodName); result = MethodDispatchCsc(object, interp, objc, objv, resolvedCmd, cscPtr, methodName, &validCscPtr); #if defined(NRE) if (validCscPtr) { CscListRemove(interp, cscPtr, NULL); CscFinish(interp, cscPtr, result, "csc cleanup"); } #else CscListRemove(interp, cscPtr, NULL); CscFinish(interp, cscPtr, result, "csc cleanup"); #endif return result; } /* *---------------------------------------------------------------------- * ObjectDispatchFinalize -- * * Finalization function for ObjectDispatch() which performs method * lookup and call all kind of methods. The function runs after * ObjectDispatch() and calls the unknown handler if necessary and * resets the filter and mixin stacks. * * Results: * Tcl result code. * * Side effects: * Maybe side effects by the cmd called by ParameterCheck() * or DispatchUnknownMethod() * *---------------------------------------------------------------------- */ NSF_INLINE static int ObjectDispatchFinalize(Tcl_Interp *interp, NsfCallStackContent *cscPtr, int result /*, char *msg, CONST char *methodName*/) { NsfRuntimeState *rst = RUNTIME_STATE(interp); NsfObject *object; int flags; assert(cscPtr); object = cscPtr->self; flags = cscPtr->flags; assert(object); assert(object->id); /*fprintf(stderr, "ObjectDispatchFinalize %p %s flags %.6x (%d) frame %.6x unk %d m %s\n", cscPtr, ObjectName(object), flags, result, cscPtr->frameType, RUNTIME_STATE(interp)->unknown, cscPtr->cmdPtr ? Tcl_GetCommandName(interp, cscPtr->cmdPtr) : "");*/ /* * Check the return value if wanted */ if (likely(result == TCL_OK && cscPtr->cmdPtr && Tcl_Command_cmdEpoch(cscPtr->cmdPtr) == 0)) { NsfParamDefs *paramDefs = ParamDefsGet(cscPtr->cmdPtr); if (paramDefs && paramDefs->returns) { Tcl_Obj *valueObj = Tcl_GetObjResult(interp); result = ParameterCheck(interp, paramDefs->returns, valueObj, "return-value:", rst->doCheckResults, 0, 0, NULL); } } else { /*fprintf(stderr, "We have no cmdPtr in cscPtr %p %s", cscPtr, ObjectName(object)); fprintf(stderr, "... cannot check return values!\n");*/ } /* * On success (no error occurred) check for unknown cases. */ if (likely(result == TCL_OK)) { if (unlikely((flags & NSF_CSC_METHOD_IS_UNKNOWN) || ((cscPtr->frameType == NSF_CSC_TYPE_ACTIVE_FILTER) && rst->unknown) )) { result = DispatchUnknownMethod(interp, object, cscPtr->objc, cscPtr->objv, NULL, cscPtr->objv[0], (cscPtr->flags & NSF_CSC_CALL_NO_UNKNOWN)|NSF_CSC_IMMEDIATE); /* * Final reset of unknown flag */ rst->unknown = 0; } } /* * Resetting mixin and filter stacks */ if (unlikely(flags & NSF_CSC_MIXIN_STACK_PUSHED) && object->mixinStack) { /* fprintf(stderr, "MixinStackPop %s.%s %p %s\n", ObjectName(object), methodName, object->mixinStack, msg);*/ MixinStackPop(object); } if (unlikely(flags & NSF_CSC_FILTER_STACK_PUSHED) && object->filterStack) { /* fprintf(stderr, "FilterStackPop %s.%s %p %s\n", ObjectName(object), methodName, object->filterStack, msg);*/ FilterStackPop(object); } return result; } /*#define INHERIT_CLASS_METHODS 1*/ #if defined(INHERIT_CLASS_METHODS) static Tcl_Command NsfFindClassMethod(Tcl_Interp *interp, NsfClass *cl, CONST char *methodName) { Tcl_Command cmd; NsfClasses *p; /*fprintf(stderr, "NsfFindClassMethod %s %s\n", ClassName(cl), methodName);*/ for(p = TransitiveSuperClasses(cl); p; p = p->nextPtr) { NsfClass *currentClass = p->cl; Tcl_Namespace *nsPtr = currentClass->object.nsPtr; /*fprintf(stderr, "1 check for obj ns in class %s => %p\n", ClassName(currentClass), nsPtr);*/ if (nsPtr) { cmd = FindMethod(nsPtr, methodName); /*fprintf(stderr, "1 lookup for method %s in class %s => %p\n", methodName, ClassName(currentClass), cmd);*/ if (cmd) {return cmd;} } } return NULL; } #endif /* *---------------------------------------------------------------------- * ObjectDispatch -- * * This function performs the method lookup and call all kind of * methods. It checks, whether a filter or mixin has to be * applied. in these cases, the effective method lookup is * performed by next. * * Results: * Tcl result code. * * Side effects: * Maybe side effects by the cmd called by ParameterCheck() * or DispatchUnknownMethod() * *---------------------------------------------------------------------- */ NSF_INLINE static int ObjectDispatch(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], int flags) { register NsfObject *object = (NsfObject *)clientData; int result = TCL_OK, objflags, shift, frameType = NSF_CSC_TYPE_PLAIN; CONST char *methodName; NsfObject *calledObject; NsfClass *cl = NULL; Tcl_Command cmd = NULL; Tcl_Obj *cmdName = object->cmdName, *methodObj; NsfCallStackContent csc, *cscPtr = NULL; int validCscPtr = 1; NsfRuntimeState *rst = RUNTIME_STATE(interp); /* none of the higher copy-flags must be passed */ assert((flags & (NSF_CSC_COPY_FLAGS & 0xFFF000)) == 0); if (unlikely(flags & NSF_CM_NO_SHIFT)) { shift = 0; methodObj = objv[0]; methodName = MethodName(methodObj); } else { assert(objc > 1); shift = 1; methodObj = objv[1]; methodName = ObjStr(methodObj); if (unlikely(FOR_COLON_RESOLVER(methodName))) { return NsfPrintError(interp, "%s: method name '%s' must not start with a colon", ObjectName(object), methodName); } } assert(object->teardown); #if defined(METHOD_OBJECT_TRACE) fprintf(stderr, "method %p/%d '%s' type %p <%s>\n", methodObj, methodObj->refCount, methodName, methodObj->typePtr, methodObj->typePtr ? methodObj->typePtr->name : ""); #endif /*fprintf(stderr, "ObjectDispatch obj = %s objc = %d 0=%s methodName=%s shift %d\n", object ? ObjectName(object) : NULL, objc, objv[0] ? ObjStr(objv[0]) : NULL, methodName, shift);*/ objflags = object->flags; /* avoid stalling */ /* * Make sure, cmdName and obj survive this method until the end of * this function. */ INCR_REF_COUNT(cmdName); NsfObjectRefCountIncr(object); /*fprintf(stderr, "obj refCount of %p after incr %d (ObjectDispatch) %s\n", object, object->refCount, methodName);*/ if (unlikely((objflags & NSF_FILTER_ORDER_VALID) == 0)) { FilterComputeDefined(interp, object); objflags = object->flags; } if (unlikely((objflags & NSF_MIXIN_ORDER_VALID) == 0)) { MixinComputeDefined(interp, object); objflags = object->flags; } /* * Only start new filter chain, if * (a) filters are defined and * (b) the toplevel csc entry is not an filter on self */ /*fprintf(stderr, "call %s, objflags %.6x, defined and valid %.6x doFilters %d guard count %d\n", methodName, objflags, NSF_FILTER_ORDER_DEFINED_AND_VALID, rst->doFilters, rst->guardCount);*/ assert((flags & (NSF_CSC_MIXIN_STACK_PUSHED|NSF_CSC_FILTER_STACK_PUSHED)) == 0); if (unlikely((objflags & NSF_FILTER_ORDER_DEFINED_AND_VALID) == NSF_FILTER_ORDER_DEFINED_AND_VALID)) { if (rst->doFilters && !rst->guardCount) { NsfCallStackContent *cscPtr1 = CallStackGetTopFrame0(interp); if (!cscPtr1 || (object != cscPtr1->self || (cscPtr1->frameType != NSF_CSC_TYPE_ACTIVE_FILTER))) { FilterStackPush(object, methodObj); flags |= NSF_CSC_FILTER_STACK_PUSHED; cmd = FilterSearchProc(interp, object, &object->filterStack->currentCmdPtr, &cl); if (cmd) { /*fprintf(stderr, "*** filterSearchProc returned cmd %p\n", cmd);*/ frameType = NSF_CSC_TYPE_ACTIVE_FILTER; methodName = (char *)Tcl_GetCommandName(interp, cmd); flags |= NSF_CM_IGNORE_PERMISSIONS; } } } } if (unlikely(cmd == NULL && (flags & NSF_CM_LOCAL_METHOD))) { /* * We require a local method. If the local method is found, we set always * the cmd and sometimes the class (if it is a class specific method). */ NsfCallStackContent *cscPtr1 = CallStackGetTopFrame0(interp); if (unlikely(cscPtr1 == NULL)) { return NsfPrintError(interp, "flag '-local' only allowed when called from a method body"); } if (cscPtr1->cl) { cmd = FindMethod(cscPtr1->cl->nsPtr, methodName); if (cmd) { cl = cscPtr1->cl; } } else if (object->nsPtr) { cmd = FindMethod(object->nsPtr, methodName); } /*fprintf(stderr, "ObjectDispatch NSF_CM_LOCAL_METHOD obj %s methodName %s => cl %p %s cmd %p \n", object ? ObjectName(object) : NULL, methodName, cl, cl ? ClassName(cl) : "NONE", cmd);*/ } else if (unlikely(*methodName == ':')) { NsfObject *regObject; int fromClassNS = 0; /* * We have fully qualified name provided. Determine the class and/or * object on which the method was registered. */ INCR_REF_COUNT(methodObj); cmd = ResolveMethodName(interp, NULL, methodObj, NULL, ®Object, NULL, NULL, &fromClassNS); DECR_REF_COUNT(methodObj); if (likely(cmd != NULL)) { if (CmdIsNsfObject(cmd)) { /* * Don't allow for calling objects as methods via fully qualified * names. Otherwise, in line [2] below, ::State (or any children of * it, e.g., ::Slot::child) is interpreted as a method candidate. As a * result, dispatch chaining occurs with ::State or ::State::child * being the receiver (instead of Class) of the method call * "-parameter". In such a dispatch chaining, the method "unknown" * won't be called on Class (in the XOTcl tradition), effectively * bypassing any unknown-based indirection mechanism (e.g., XOTcl's short-cutting * of object/class creations). * * [1] Class ::State; Class ::State::child * [2] Class ::State -parameter x; Class ::State::child -parameter x */ NsfLog(interp, NSF_LOG_NOTICE, "Don't invoke object %s this way. Register object via alias ...", methodName); cmd = NULL; } else { if (regObject) { if (NsfObjectIsClass(regObject)) { cl = (NsfClass *)regObject; } } /* fprintf(stderr, "fully qualified lookup of %s returned %p\n", ObjStr(methodObj), cmd); */ /* ignore permissions for fully qualified method names */ flags |= NSF_CM_IGNORE_PERMISSIONS; } /*fprintf(stderr, "ObjectDispatch fully qualified obj %s methodName %s => cl %p cmd %p \n", object ? ObjectName(object) : NULL, methodName, cl, cmd);*/ } } /*fprintf(stderr, "MixinStackPush check for %p %s.%s objflags %.6x == %d\n", object, ObjectName(object), methodName, objflags & NSF_MIXIN_ORDER_DEFINED_AND_VALID, (objflags & NSF_MIXIN_ORDER_DEFINED_AND_VALID) == NSF_MIXIN_ORDER_DEFINED_AND_VALID);*/ /* * Check if a mixed in method has to be called. */ if (unlikely((objflags & NSF_MIXIN_ORDER_DEFINED_AND_VALID) == NSF_MIXIN_ORDER_DEFINED_AND_VALID && (flags & (NSF_CM_SYSTEM_METHOD|NSF_CM_INTRINSIC_METHOD)) == 0 && ((flags & NSF_CM_LOCAL_METHOD) == 0 || cl))) { /* * The current logic allocates first an entry on the per-object * stack and searches then for a mixin. This could be improved by * allocating a stack entry just when an mixin is found. The same * holds for the filters above, but there, the hit-rate is much * larger. */ MixinStackPush(object); flags |= NSF_CSC_MIXIN_STACK_PUSHED; if (frameType != NSF_CSC_TYPE_ACTIVE_FILTER) { Tcl_Command cmd1 = cmd; /* * The entry is just searched and pushed on the stack when we * have no filter; in the filter case, the search happens in * next. */ result = MixinSearchProc(interp, object, methodName, methodObj, &cl, &object->mixinStack->currentCmdPtr, &cmd1); if (result != TCL_OK) { /*fprintf(stderr, "mixinsearch returned an error for %p %s.%s\n", object, ObjectName(object), methodName);*/ validCscPtr = 0; goto exit_object_dispatch; } if (cmd1) { frameType = NSF_CSC_TYPE_ACTIVE_MIXIN; cmd = cmd1; } } } /* * If no fully qualified method name/filter/mixin was found then perform * ordinary method lookup. First, try to resolve the method name as a * per-object method. */ if (likely(cmd == NULL)) { NsfMethodContext *mcPtr = methodObj->internalRep.twoPtrValue.ptr1; int nsfObjectMethodEpoch = rst->objectMethodEpoch; if (methodObj->typePtr == &NsfObjectMethodObjType && mcPtr->context == object && mcPtr->methodEpoch == nsfObjectMethodEpoch && mcPtr->flags == flags ) { cmd = mcPtr->cmd; #if defined(METHOD_OBJECT_TRACE) fprintf(stderr, "... use internal rep method %p %s cmd %p (objProc %p) cl %p %s\n", methodObj, ObjStr(methodObj), cmd, cmd ? ((Command *)cmd)->objProc : 0, cl, cl ? ClassName(cl) : ObjectName(object)); #endif assert(cmd ? ((Command *)cmd)->objProc != NULL : 1); } else { /* * Do we have an object-specific cmd? */ if (unlikely(object->nsPtr && (flags & (NSF_CM_NO_OBJECT_METHOD|NSF_CM_SYSTEM_METHOD)) == 0)) { cmd = FindMethod(object->nsPtr, methodName); /*fprintf(stderr, "lookup for per-object method in obj %p method %s nsPtr %p" " => %p objProc %p\n", object, methodName, object->nsPtr, cmd, cmd ? ((Command *)cmd)->objProc : NULL);*/ if (cmd) { /* * Reject call when * a) trying to call a private method without the local flag or ignore permssions, or * b) trying to call an object with no method interface */ if (((flags & (NSF_CM_LOCAL_METHOD|NSF_CM_IGNORE_PERMISSIONS)) == 0 && (Tcl_Command_flags(cmd) & NSF_CMD_CALL_PRIVATE_METHOD)) ) { cmd = NULL; } else { NsfMethodObjSet(interp, methodObj, &NsfObjectMethodObjType, object, nsfObjectMethodEpoch, cmd, NULL, flags); } } } } #if defined(INHERIT_CLASS_METHODS) /* this is not optimized yet, since current class might be checked twice, but easier to maintain */ if ((flags & NSF_CM_NO_OBJECT_METHOD) == 0 && cmd == NULL && NsfObjectIsClass(object)) { cmd = NsfFindClassMethod(interp, (NsfClass *)object, methodName); } #endif if (likely(cmd == NULL)) { /* check for an instance method */ NsfClass *currentClass = object->cl; NsfMethodContext *mcPtr = methodObj->internalRep.twoPtrValue.ptr1; int nsfInstanceMethodEpoch = rst->instanceMethodEpoch; #if defined(METHOD_OBJECT_TRACE) fprintf(stderr, "... method %p/%d '%s' type? %d context? %d nsfMethodEpoch %d => %d\n", methodObj, methodObj->refCount, ObjStr(methodObj), methodObj->typePtr == &NsfInstanceMethodObjType, methodObj->typePtr == &NsfInstanceMethodObjType ? mcPtr->context == currentClass : 0, methodObj->typePtr == &NsfInstanceMethodObjType ? mcPtr->methodEpoch : 0, nsfInstanceMethodEpoch ); #endif if (methodObj->typePtr == &NsfInstanceMethodObjType && mcPtr->context == currentClass && mcPtr->methodEpoch == nsfInstanceMethodEpoch && mcPtr->flags == flags ) { cmd = mcPtr->cmd; cl = mcPtr->cl; #if defined(METHOD_OBJECT_TRACE) fprintf(stderr, "... use internal rep method %p %s cmd %p (objProc %p) cl %p %s\n", methodObj, ObjStr(methodObj), cmd, cmd?((Command *)cmd)->objProc : NULL, cl, cl ? ClassName(cl) : ObjectName(object)); #endif assert(cmd ? ((Command *)cmd)->objProc != NULL : 1); } else { /* * We could call TransitiveSuperClasses(currentClass) to recompute * currentClass->order on demand, but by construction this is already * set here. */ assert(currentClass->order); if (unlikely(flags & NSF_CM_SYSTEM_METHOD)) { NsfClasses *classList = currentClass->order; /* * Skip entries until the first base class. */ for (; classList; classList = classList->nextPtr) { if (IsBaseClass(&classList->cl->object)) {break;} } cl = SearchPLMethod(classList, methodName, &cmd, NSF_CMD_CALL_PRIVATE_METHOD); } else { cl = SearchPLMethod(currentClass->order, methodName, &cmd, NSF_CMD_CALL_PRIVATE_METHOD); } if (methodObj->typePtr != Nsf_OT_tclCmdNameType && methodObj->typePtr != Nsf_OT_parsedVarNameType ) { NsfMethodObjSet(interp, methodObj, &NsfInstanceMethodObjType, currentClass, nsfInstanceMethodEpoch, cmd, cl, flags); } } } } #if 0 if (1//(object->flags & NSF_KEEP_CALLER_SELF) //&& (flags & NSF_CSC_CALL_IS_ENSEMBLE) == 0 && (flags & NSF_CM_KEEP_CALLER_SELF)) { // yyyy calledObject = GetSelfObj(interp); if (calledObject == NULL) { NsfShowStack(interp); fprintf(stderr, "strange, callerObject is apparently null; stay at %p %s %s FLAGS %.6x\n", object, ObjectName(object), methodName, flags); calledObject = object; } fprintf(stderr, "NSF_KEEP_CALLER_SELF %p %s calledObject %p %s objv[0] %s\n", object, ObjectName(object), calledObject, ObjectName(calledObject), ObjStr(objv[0])); } else { calledObject = object; } #else calledObject = object; #endif /* * If we have a command, check the permissions, unless * NSF_CM_IGNORE_PERMISSIONS is set. Note, that NSF_CM_IGNORE_PERMISSIONS is * set currently for fully qualified cmd names and in nsf::object::dispatch. */ if (likely(cmd && (flags & NSF_CM_IGNORE_PERMISSIONS) == 0)) { int cmdFlags = Tcl_Command_flags(cmd); #if !defined(NDEBUG) if (unlikely((cmdFlags & NSF_CMD_CALL_PRIVATE_METHOD) && ((flags & NSF_CM_LOCAL_METHOD) == 0)) ) { /* * Private methods can be only called with the "-local" flag. All cases * handling private methods should be covered above (e.g. by setting * NSF_CM_IGNORE_PERMISSIONS, or by filtering private methods in method * search. So, this branch should never by executed. */ Tcl_Panic("Unexpected handling of private method; most likely a caching bug"); cmd = NULL; } else #endif if (unlikely(cmdFlags & NSF_CMD_CALL_PROTECTED_METHOD)) { NsfObject *lastSelf = GetSelfObj(interp); /* * Protected methods can be called, when calling object == called object. */ if (unlikely(object != lastSelf)) { NsfLog(interp, NSF_LOG_WARN, "'%s %s' fails since method %s.%s is protected", ObjectName(object), methodName, cl ? ClassName(cl) : ObjectName(object), methodName); /* reset cmd, since it is still unknown */ cmd = NULL; } } } assert(result == TCL_OK); if (likely(cmd != NULL)) { /* * We found the method to dispatch. */ Tcl_Command resolvedCmd = AliasDereference(interp, object, methodName, cmd); if (unlikely(resolvedCmd == NULL)) { validCscPtr = 0; goto exit_object_dispatch; } /* * cscAlloc uses for resolvedCmd for allocating the call stack content and * sets the IS_NRE flag based on it. We use the original cmd in the * callstack content structure for introspection. */ cscPtr = CscAlloc(interp, &csc, resolvedCmd); CscInit(cscPtr, calledObject, cl, cmd, frameType, flags, methodName); if (unlikely(cscPtr->frameType == NSF_CSC_TYPE_ACTIVE_FILTER)) { /* run filters is not NRE enabled */ cscPtr->flags |= NSF_CSC_IMMEDIATE; /* * Setting cscPtr->objc and cscPtr->objv is needed for invoking UNKNOWN * from ProcMethodDispatchFinalize() */ cscPtr->objc = objc-shift; cscPtr->objv = objv+shift; } /*fprintf(stderr, "MethodDispatchCsc %s.%s %p flags %.6x cscPtr %p\n", ObjectName(object), methodName, object->mixinStack, cscPtr->flags, cscPtr);*/ result = MethodDispatchCsc(clientData, interp, objc-shift, objv+shift, resolvedCmd, cscPtr, methodName, &validCscPtr); if (unlikely(result == TCL_ERROR)) { /*fprintf(stderr, "Call ErrInProc cl = %p, cmd %p, flags %.6x\n", cl, cl ? cl->object.id : NULL, cl ? cl->object.flags : 0);*/ result = NsfErrInProc(interp, cmdName, cl && cl->object.teardown ? cl->object.cmdName : NULL, methodName); } } else { /* * The method to be dispatched is unknown */ cscPtr = CscAlloc(interp, &csc, cmd); CscInit(cscPtr, object, cl, cmd, frameType, flags, methodName); cscPtr->flags |= NSF_CSC_METHOD_IS_UNKNOWN; if ((flags & NSF_CM_NO_UNKNOWN)) { cscPtr->flags |= NSF_CSC_CALL_NO_UNKNOWN; } cscPtr->objc = objc-shift; cscPtr->objv = objv+shift; } exit_object_dispatch: if (likely(validCscPtr)) { /* * In every situation, we have a cscPtr containing all context information */ assert(cscPtr); result = ObjectDispatchFinalize(interp, cscPtr, result /*, "immediate" , methodName*/); CscListRemove(interp, cscPtr, NULL); CscFinish(interp, cscPtr, result, "non-scripted finalize"); } /*fprintf(stderr, "ObjectDispatch %s.%s returns %d\n", ObjectName(object), methodName, result);*/ NsfCleanupObject(object, "ObjectDispatch"); /*fprintf(stderr, "ObjectDispatch call NsfCleanupObject %p DONE\n", object);*/ DECR_REF_COUNT(cmdName); /* must be after last dereferencing of obj */ return result; } /* *---------------------------------------------------------------------- * DispatchDefaultMethod -- * * Dispatch the default method (when object is called without arguments) * in case the object system has it defined. * * Results: * result code. * * Side effects: * indirect effects by calling Tcl code * *---------------------------------------------------------------------- */ static int DispatchDefaultMethod(Tcl_Interp *interp, NsfObject *object, Tcl_Obj *obj, int flags) { int result; Tcl_Obj *methodObj; assert(object); if (CallDirectly(interp, object, NSF_o_defaultmethod_idx, &methodObj)) { Tcl_SetObjResult(interp, object->cmdName); result = TCL_OK; } else { Tcl_Obj *tov[2]; tov[0] = obj; tov[1] = methodObj; result = ObjectDispatch(object, interp, 2, tov, flags|NSF_CM_NO_UNKNOWN|NSF_CM_IGNORE_PERMISSIONS); } return result; } /* *---------------------------------------------------------------------- * DispatchDestroyMethod -- * * Dispatch the method "destroy" in case the object system has it * defined. During the final cleanup of the object system, the * destroy is called separately from deallocation. Normally, * Object.destroy() calls dealloc, which is responsible for the * physical deallocation. * * Results: * result code * * Side effects: * indirect effects by calling Tcl code * *---------------------------------------------------------------------- */ static int DispatchDestroyMethod(Tcl_Interp *interp, NsfObject *object, int flags) { int result; Tcl_Obj *methodObj; NsfRuntimeState *rst = RUNTIME_STATE(interp); /* * Don't call destroy after exit handler started physical * destruction, or when it was called already before */ if (rst->exitHandlerDestroyRound == NSF_EXITHANDLER_ON_PHYSICAL_DESTROY || (object->flags & NSF_DESTROY_CALLED) ) { return TCL_OK; } /*fprintf(stderr, " DispatchDestroyMethod obj %p flags %.6x active %d\n", object, object->flags, object->activationCount); */ PRINTOBJ("DispatchDestroyMethod", object); /* flag, that destroy was called and invoke the method */ object->flags |= NSF_DESTROY_CALLED; if (CallDirectly(interp, object, NSF_o_destroy_idx, &methodObj)) { result = NsfODestroyMethod(interp, object); } else { result = CallMethod(object, interp, methodObj, 2, 0, NSF_CM_IGNORE_PERMISSIONS|NSF_CSC_IMMEDIATE|flags); } if (unlikely(result != TCL_OK)) { /* * The object might be already gone here, since we have no stack frame. * Therefore, we can't even use nsf::current object safely. */ NsfErrorContext(interp, "method destroy"); if (++rst->errorCount > 20) { Tcl_Panic("too many destroy errors occurred. Endless loop?"); } } else if (rst->errorCount > 0) { rst->errorCount--; } #ifdef OBJDELETION_TRACE fprintf(stderr, "DispatchDestroyMethod for %p exit\n", object); #endif return result; } /* *---------------------------------------------------------------------- * DispatchInitMethod -- * in case the object system has it * defined and it was not already called on the object, * * Results: * Result code. * * Side effects: * Indirect effects by calling Tcl code * *---------------------------------------------------------------------- */ static int DispatchInitMethod(Tcl_Interp *interp, NsfObject *object, int objc, Tcl_Obj *CONST objv[], int flags) { int result; Tcl_Obj *methodObj; assert(object); /* * check, whether init was called already */ if (!(object->flags & (NSF_INIT_CALLED|NSF_DESTROY_CALLED))) { /* * Flag the call to "init" before the dispatch, such that a call to * "configure" within init does not clear the already set instance * variables. */ object->flags |= NSF_INIT_CALLED; if (CallDirectly(interp, object, NSF_o_init_idx, &methodObj)) { /*fprintf(stderr, "%s init directly\n", ObjectName(object));*/ /* * Actually, nothing to do. */ result = TCL_OK; } else { /*fprintf(stderr, "%s init dispatch\n", ObjectName(object));*/ result = CallMethod(object, interp, methodObj, objc+2, objv, flags|NSF_CM_IGNORE_PERMISSIONS|NSF_CSC_IMMEDIATE); } } else { result = TCL_OK; } return result; } /* *---------------------------------------------------------------------- * DispatchUnknownMethod -- * * Dispatch the method "unknown" in case the object system has it * defined and the application program contains an unknown handler. * * Results: * result code * * Side effects: * indirect effects by calling Tcl code * *---------------------------------------------------------------------- */ static int DispatchUnknownMethod(Tcl_Interp *interp, NsfObject *object, int objc, Tcl_Obj *CONST objv[], Tcl_Obj *callInfoObj, Tcl_Obj *methodObj, int flags) { int result; Tcl_Obj *unknownObj = NsfMethodObj(object, NSF_o_unknown_idx); CONST char *methodName = MethodName(methodObj); /*fprintf(stderr, "compare unknownObj %p with methodObj %p '%s' %p %p %s -- %s\n", unknownObj, methodObj, ObjStr(methodObj), callInfoObj, callInfoObj?objv[1]:NULL, callInfoObj?ObjStr(objv[1]) : NULL, methodName);*/ if (unknownObj && methodObj != unknownObj && (flags & NSF_CSC_CALL_NO_UNKNOWN) == 0) { /* * back off and try unknown; */ int mustCopy = *(ObjStr(methodObj)) == ':'; ALLOC_ON_STACK(Tcl_Obj*, objc+3, tov); if (callInfoObj == NULL) { callInfoObj = mustCopy ? Tcl_NewStringObj(methodName, -1) : methodObj; } INCR_REF_COUNT(callInfoObj); /*fprintf(stderr, "calling unknown for %s %s, flags=%.6x,%.6x/%.6x isClass=%d %p %s objc %d\n", ObjectName(object), ObjStr(methodObj), flags, NSF_CM_NO_UNKNOWN, NSF_CSC_CALL_NO_UNKNOWN, NsfObjectIsClass(object), object, ObjectName(object), objc);*/ tov[0] = object->cmdName; tov[1] = unknownObj; tov[2] = callInfoObj; if (objc > 1) { memcpy(tov + 3, objv + 1, sizeof(Tcl_Obj *) * (objc - 1)); } flags &= ~NSF_CM_NO_SHIFT; /*fprintf(stderr, "call unknown via dispatch mustCopy %d delegator %p method %s (%s)\n", mustCopy, delegator, ObjStr(tov[offset]), ObjStr(methodObj));*/ result = ObjectDispatch(object, interp, objc+2, tov, flags|NSF_CM_NO_UNKNOWN|NSF_CM_IGNORE_PERMISSIONS); DECR_REF_COUNT(callInfoObj); FREE_ON_STACK(Tcl_Obj*, tov); } else { /* no unknown called, this is the built-in unknown handler */ Tcl_Obj *tailMethodObj = NULL; if (objc > 1 && ((*methodName) == '-' || (unknownObj && objv[0] == unknownObj))) { int length; if (Tcl_ListObjLength(interp, objv[1], &length) == TCL_OK && length > 0) { Tcl_ListObjIndex(interp, objv[1], length - 1, &tailMethodObj); } } result = NsfPrintError(interp, "%s: unable to dispatch method '%s'", ObjectName(object), tailMethodObj ? MethodName(tailMethodObj) : methodName); } return result; } /* *---------------------------------------------------------------------- * NsfObjDispatch -- * * This function is called on every object dispatch (when an object * is invoked). It calls either the passed method, or dispatches * some default method. * * Results: * Tcl result code. * * Side effects: * Maybe side effects by the cmd called by ParameterCheck() * or DispatchUnknownMethod() * *---------------------------------------------------------------------- */ #if defined(NRE) Tcl_ObjCmdProc NsfObjDispatchNRE; int NsfObjDispatch(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) { return Tcl_NRCallObjProc(interp, NsfObjDispatchNRE, clientData, objc, objv); } int NsfObjDispatchNRE(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) { #else EXTERN int NsfObjDispatch(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) { #endif int result; #ifdef STACK_TRACE NsfStackDump(interp); #endif if (likely(objc > 1)) { /* * Normal dispatch; we must not use NSF_CSC_IMMEDIATE here, * otherwise coroutines won't work. */ result = ObjectDispatch(clientData, interp, objc, objv, 0); } else { result = DispatchDefaultMethod(interp, (NsfObject *)clientData, objv[0], NSF_CSC_IMMEDIATE); } return result; } /* * Proc-Creation */ /* *---------------------------------------------------------------------- * AddPrefixToBody -- * * Create a fresh TclObj* containing the body with an potential prefix. * The caller has to decrement the ref-count on this Tcl_Obj*. * * Results: * Tcl_Obj * * Side effects: * None. * *---------------------------------------------------------------------- */ static Tcl_Obj * AddPrefixToBody(Tcl_Obj *body, int paramDefs, NsfParsedParam *paramPtr) { Tcl_Obj *resultBody = Tcl_NewObj(); INCR_REF_COUNT2("resultBody", resultBody); if (paramDefs && paramPtr->possibleUnknowns > 0) { Tcl_AppendStringsToObj(resultBody, "::nsf::__unset_unknown_args\n", (char *) NULL); } Tcl_AppendStringsToObj(resultBody, ObjStr(body), (char *) NULL); return resultBody; } NSF_INLINE static int NoMetaChars(CONST char *pattern) { register char c; CONST char *p = pattern; assert(pattern); for (c=*p; c; c = *++p) { if (c == '*' || c == '?' || c == '[') { return 0; } } return 1; } /*********************************************************************** * Nsf_TypeConverter ***********************************************************************/ /* *---------------------------------------------------------------------- * Nsf_ConvertToString -- * * Minimal Nsf_TypeConverter setting the client data (passed to C * functions) to the ObjStr of the object. * * Results: * Tcl result code, *clientData and **outObjPtr * * Side effects: * None. * *---------------------------------------------------------------------- */ int Nsf_ConvertToString(Tcl_Interp *UNUSED(interp), Tcl_Obj *objPtr, Nsf_Param CONST *UNUSED(pPtr), ClientData *clientData, Tcl_Obj **outObjPtr) { *clientData = (char *)ObjStr(objPtr); assert(*outObjPtr == objPtr); return TCL_OK; } /* *---------------------------------------------------------------------- * ConvertToNothing -- * * Minimalistic Nsf_TypeConverter, even setting the client data (passed to * C functions). * * Results: * Tcl result code, **outObjPtr * * Side effects: * None. * *---------------------------------------------------------------------- */ static int ConvertToNothing(Tcl_Interp *UNUSED(interp), Tcl_Obj *objPtr, Nsf_Param CONST *UNUSED(pPtr), ClientData *UNUSED(clientData), Tcl_Obj **outObjPtr) { assert(*outObjPtr == objPtr); *outObjPtr = objPtr; return TCL_OK; } /* *---------------------------------------------------------------------- * Nsf_ConvertToTclobj -- * * Nsf_TypeConverter setting the client data (passed to C functions) to the * passed Tcl_Obj. Optionally this converter checks if the Tcl_Obj has * permissible content via the Tcl "string is" checkers. * * Results: * Tcl result code, *clientData and **outObjPtr * * Side effects: * None. * *---------------------------------------------------------------------- */ enum stringTypeIdx {StringTypeAlnum, StringTypeAlpha, StringTypeAscii, StringTypeBoolean, StringTypeControl, StringTypeDigit, StringTypeDouble, StringTypeFalse, StringTypeGraph, StringTypeInteger, StringTypeLower, StringTypePrint, StringTypePunct, StringTypeSpace, StringTypeTrue, StringTypeUpper, StringTypeWideinteger, StringTypeWordchar, StringTypeXdigit }; static CONST char *stringTypeOpts[] = {"alnum", "alpha", "ascii", "boolean", "control", "digit", "double", "false", "graph", "integer", "lower", "print", "punct", "space", "true", "upper", "wideinteger", "wordchar", "xdigit", NULL}; int Nsf_ConvertToTclobj(Tcl_Interp *interp, Tcl_Obj *objPtr, Nsf_Param CONST *pPtr, ClientData *clientData, Tcl_Obj **outObjPtr) { int result; if (unlikely(pPtr->converterArg != NULL)) { Tcl_Obj *objv[3]; /*fprintf(stderr, "ConvertToTclobj %s (must be %s)\n", ObjStr(objPtr), ObjStr(pPtr->converterArg));*/ objv[1] = pPtr->converterArg; objv[2] = objPtr; result = NsfCallCommand(interp, NSF_IS, 3, objv); if (likely(result == TCL_OK)) { int success; Tcl_GetIntFromObj(interp, Tcl_GetObjResult(interp), &success); if (success == 1) { *clientData = objPtr; } else { Tcl_ResetResult(interp); result = NsfObjErrType(interp, NULL, objPtr, ObjStr(pPtr->converterArg), (Nsf_Param *)pPtr); } } } else { result = TCL_OK; #if defined(NSF_WITH_VALUE_WARNINGS) if (RUNTIME_STATE(interp)->debugLevel > 0) { char *value = ObjStr(objPtr); if (unlikely(*value == '-' && (pPtr->flags & NSF_ARG_CHECK_NONPOS) && isalpha(*(value+1)) && strchr(value+1, ' ') == NULL) ) { /* * In order to flag a warning, we set the error message and * return TCL_CONTINUE */ (void)NsfPrintError(interp, "value '%s' of parameter '%s' could be a non-positional argument", value, pPtr->name); result = TCL_CONTINUE; } } #endif *clientData = objPtr; } assert(*outObjPtr == objPtr); return result; } /* *---------------------------------------------------------------------- * Nsf_ConvertToBoolean -- * * Nsf_TypeConverter setting the client data (passed to C functions) to the * internal representation of a boolean. This converter checks the passed * value via Tcl_GetBooleanFromObj(). * * Results: * Tcl result code, *clientData and **outObjPtr * * Side effects: * None. * *---------------------------------------------------------------------- */ int Nsf_ConvertToBoolean(Tcl_Interp *interp, Tcl_Obj *objPtr, Nsf_Param CONST *pPtr, ClientData *clientData, Tcl_Obj **outObjPtr) { int result, bool; result = Tcl_GetBooleanFromObj(interp, objPtr, &bool); if (result == TCL_OK) { *clientData = (ClientData)INT2PTR(bool); } else { Tcl_ResetResult(interp); NsfObjErrType(interp, NULL, objPtr, "boolean", pPtr); } assert(*outObjPtr == objPtr); return result; } /* *---------------------------------------------------------------------- * Nsf_ConvertToInt32 -- * * Nsf_TypeConverter setting the client data (passed to C functions) to the * internal representation of an integer. This converter checks the passed * value via Tcl_GetIntFromObj(). * * Results: * Tcl result code, *clientData and **outObjPtr * * Side effects: * None. * *---------------------------------------------------------------------- */ int Nsf_ConvertToInt32(Tcl_Interp *interp, Tcl_Obj *objPtr, Nsf_Param CONST *pPtr, ClientData *clientData, Tcl_Obj **outObjPtr) { int result; int i; result = Tcl_GetIntFromObj(interp, objPtr, &i); if (likely(result == TCL_OK)) { *clientData = (ClientData)INT2PTR(i); assert(*outObjPtr == objPtr); } else { Tcl_ResetResult(interp); NsfObjErrType(interp, NULL, objPtr, "int32", (Nsf_Param *)pPtr); } return result; } /* *---------------------------------------------------------------------- * Nsf_ConvertToInteger -- * * Nsf_TypeConverter setting the client data (passed to C functions) to the * TclObj containing the bignum value. This converter checks the passed * value via Tcl_GetBignumFromObj(). * * Results: * Tcl result code, *clientData and **outObjPtr * * Side effects: * None. * *---------------------------------------------------------------------- */ #include int Nsf_ConvertToInteger(Tcl_Interp *interp, Tcl_Obj *objPtr, Nsf_Param CONST *pPtr, ClientData *clientData, Tcl_Obj **outObjPtr) { int result; /* * Try to short_cut common cases to avoid conversion to bignums, since * Tcl_GetBignumFromObj returns a value, which has to be freed. */ if (objPtr->typePtr == Nsf_OT_intType) { /* * We know already, that the value is an int */ result = TCL_OK; } else if (objPtr->typePtr == Nsf_OT_doubleType) { /* * We know already, that the value is not an int */ result = TCL_ERROR; } else { mp_int bignumValue; /* * We have to figure out, whether the value is an int. We perform this * test via Tcl_GetBignumFromObj(), which tries to keep the type small if * possible (e.g. it might return type "int" or "float" when appropriate. */ /*if (objPtr->typePtr) { fprintf(stderr, "type is on call %p %s value %s \n", objPtr->typePtr, objPtr->typePtr? objPtr->typePtr->name:"NULL", ObjStr(objPtr)); }*/ if ((result = Tcl_GetBignumFromObj(interp, objPtr, &bignumValue)) == TCL_OK) { mp_clear(&bignumValue); } } if (likely(result == TCL_OK)) { *clientData = (ClientData)objPtr; assert(*outObjPtr == objPtr); } else { Tcl_ResetResult(interp); NsfObjErrType(interp, NULL, objPtr, "integer", (Nsf_Param *)pPtr); } return result; } /* *---------------------------------------------------------------------- * Nsf_ConvertToSwitch -- * * Nsf_TypeConverter setting the client data (passed to C functions) to the * internal representation of an Boolean. This converter simply calls * Tcl_ConvertToBoolean(). The distinction between "switch" and boolean is * made on the semantics of which arguments/defaults are passed to the real * converter. * * Results: * Tcl result code, *clientData and **outObjPtr * * Side effects: * None. * *---------------------------------------------------------------------- */ int Nsf_ConvertToSwitch(Tcl_Interp *interp, Tcl_Obj *objPtr, Nsf_Param CONST *pPtr, ClientData *clientData, Tcl_Obj **outObjPtr) { return Nsf_ConvertToBoolean(interp, objPtr, pPtr, clientData, outObjPtr); } /* *---------------------------------------------------------------------- * Nsf_ConvertToObject -- * * Nsf_TypeConverter setting the client data (passed to C functions) to the * internal representation of an object. This converter checks the passed * value via IsObjectOfType(). * * Results: * Tcl result code, *clientData and **outObjPtr * * Side effects: * None. * *---------------------------------------------------------------------- */ int Nsf_ConvertToObject(Tcl_Interp *interp, Tcl_Obj *objPtr, Nsf_Param CONST *pPtr, ClientData *clientData, Tcl_Obj **outObjPtr) { assert(*outObjPtr == objPtr); if (likely(GetObjectFromObj(interp, objPtr, (NsfObject **)clientData) == TCL_OK)) { return IsObjectOfType(interp, (NsfObject *)*clientData, "object", objPtr, pPtr); } return NsfObjErrType(interp, NULL, objPtr, "object", (Nsf_Param *)pPtr); } /* *---------------------------------------------------------------------- * Nsf_ConvertToClass -- * * Nsf_TypeConverter setting the client data (passed to C functions) to the * internal representation of a class. This converter checks the passed * value via IsObjectOfType(). * * Results: * Tcl result code, *clientData and **outObjPtr * * Side effects: * None. * *---------------------------------------------------------------------- */ int Nsf_ConvertToClass(Tcl_Interp *interp, Tcl_Obj *objPtr, Nsf_Param CONST *pPtr, ClientData *clientData, Tcl_Obj **outObjPtr) { assert(*outObjPtr == objPtr); if (likely(GetClassFromObj(interp, objPtr, (NsfClass **)clientData, 0) == TCL_OK)) { return IsObjectOfType(interp, (NsfObject *)*clientData, "class", objPtr, pPtr); } return NsfObjErrType(interp, NULL, objPtr, "class", (Nsf_Param *)pPtr); } /* *---------------------------------------------------------------------- * Nsf_ConvertToFilterreg -- * * Nsf_TypeConverter setting the client data (passed to C functions) to the * Tcl_Obj. This nsf type converter checks the passed value via the * NsfFilterregObjType tcl_obj converter, which provides an internal * representation for the client function. * * Results: * Tcl result code, *clientData and **outObjPtr * * Side effects: * None. * *---------------------------------------------------------------------- */ int Nsf_ConvertToFilterreg(Tcl_Interp *interp, Tcl_Obj *objPtr, Nsf_Param CONST *pPtr, ClientData *clientData, Tcl_Obj **outObjPtr) { int result; assert(*outObjPtr == objPtr); result = Tcl_ConvertToType(interp, objPtr, &NsfFilterregObjType); if (likely(result == TCL_OK)) { *clientData = objPtr; return result; } return NsfObjErrType(interp, NULL, objPtr, "filterreg", (Nsf_Param *)pPtr); } /* *---------------------------------------------------------------------- * Nsf_ConvertToMixinreg -- * * Nsf_TypeConverter setting the client data (passed to C functions) to the * Tcl_Obj. This nsf type converter checks the passed value via the * NsfMixinregObjType tcl_obj converter, which provides an internal * representation for the client function. * * Results: * Tcl result code, *clientData and **outObjPtr * * Side effects: * None. * *---------------------------------------------------------------------- */ int Nsf_ConvertToMixinreg(Tcl_Interp *interp, Tcl_Obj *objPtr, Nsf_Param CONST *pPtr, ClientData *clientData, Tcl_Obj **outObjPtr) { int result; assert(*outObjPtr == objPtr); result = Tcl_ConvertToType(interp, objPtr, &NsfMixinregObjType); if (likely(result == TCL_OK)) { *clientData = objPtr; return result; } return NsfObjErrType(interp, NULL, objPtr, "mixinreg", (Nsf_Param *)pPtr); } /* *---------------------------------------------------------------------- * Nsf_ConvertToParameter -- * * Nsf_TypeConverter setting the client data (passed to C functions) to the * Tcl_Obj. This nsf type converter checks if the provided value could be a * valid parameter spec (i.e. start with no ":", is not an unnamed spec * "-:int"). This converter performs just a rough syntactic check. * * Results: * Tcl result code, *clientData and **outObjPtr * * Side effects: * None. * *---------------------------------------------------------------------- */ int Nsf_ConvertToParameter(Tcl_Interp *interp, Tcl_Obj *objPtr, Nsf_Param CONST *pPtr, ClientData *clientData, Tcl_Obj **outObjPtr) { CONST char *value = ObjStr(objPtr); assert(*outObjPtr == objPtr); /*fprintf(stderr, "convert to parameter '%s' t '%s'\n", value, pPtr->type);*/ if (*value == ':' || (*value == '-' && *(value + 1) == ':')) { return NsfPrintError(interp, "leading colon in '%s' not allowed in parameter specification '%s'", ObjStr(objPtr), pPtr->name); } *clientData = (char *)ObjStr(objPtr); return TCL_OK; } /* *---------------------------------------------------------------------- * ConvertViaCmd -- * * Nsf_TypeConverter calling a used-defined checking/conversion * function. It sets the client data (passed to C functions) to the * Tcl_Obj. * * Results: * Tcl result code, *clientData and **outObjPtr * * Side effects: * None. * *---------------------------------------------------------------------- */ static int ConvertViaCmd(Tcl_Interp *interp, Tcl_Obj *objPtr, Nsf_Param CONST *pPtr, ClientData *clientData, Tcl_Obj **outObjPtr) { Tcl_Obj *ov[5], *savedResult; NsfObject *object; int result, oc; /* * In general, when the converter is used e.g. for result checking, * we do not want to alter the result just when the converter sets a * result. So, for non-converter, we save the old result and restore * it before the return in case of success. Strictly speaking, * result-overwriting just harms for result-converters, but saving is * always semantically correct. */ if (unlikely((pPtr->flags & NSF_ARG_IS_CONVERTER) == 0)) { savedResult = Tcl_GetObjResult(interp); /* save the result */ INCR_REF_COUNT(savedResult); } else { savedResult = NULL; } ov[0] = pPtr->slotObj ? pPtr->slotObj : NsfGlobalObjs[NSF_METHOD_PARAMETER_SLOT_OBJ]; ov[1] = pPtr->converterName; ov[2] = pPtr->nameObj; ov[3] = objPtr; oc = 4; if (pPtr->converterArg) { ov[4] = pPtr->converterArg; oc++; } /*fprintf(stderr, "ConvertViaCmd call converter %s (refCount %d) on %s paramPtr %p arg %p oc %d\n", ObjStr(pPtr->converterName), pPtr->converterName->refCount, ObjStr(ov[0]), pPtr, pPtr->converterArg, oc);*/ INCR_REF_COUNT(ov[1]); INCR_REF_COUNT(ov[2]); /* result = Tcl_EvalObjv(interp, oc, ov, 0); */ GetObjectFromObj(interp, ov[0], &object); result = ObjectDispatch(object, interp, oc, ov, NSF_CSC_IMMEDIATE|NSF_CM_IGNORE_PERMISSIONS); DECR_REF_COUNT(ov[1]); DECR_REF_COUNT(ov[2]); /* per default, the input arg is the output arg */ assert(*outObjPtr == objPtr); if (likely(result == TCL_OK)) { /*fprintf(stderr, "ConvertViaCmd could convert %s to '%s' paramPtr %p, is_converter %d\n", ObjStr(objPtr), ObjStr(Tcl_GetObjResult(interp)), pPtr, pPtr->flags & NSF_ARG_IS_CONVERTER);*/ if (pPtr->flags & NSF_ARG_IS_CONVERTER) { /* * If we want to convert, the resulting obj is the result of the * converter. incr refCount is necessary e.g. for e.g. * return [expr {$value + 1}] */ *outObjPtr = Tcl_GetObjResult(interp); INCR_REF_COUNT2("valueObj", *outObjPtr); /*fprintf(stderr, "**** NSF_ARG_IS_CONVERTER %p\n", *outObjPtr);*/ } *clientData = (ClientData) *outObjPtr; if (savedResult) { /*fprintf(stderr, "restore savedResult %p\n", savedResult);*/ Tcl_SetObjResult(interp, savedResult); /* restore the result */ } } if (savedResult) { DECR_REF_COUNT(savedResult); } return result; } /* *---------------------------------------------------------------------- * ConvertToObjpattern -- * * This function obtains a Tcl_Obj *, which contains the pattern if an Next * Scripting Object. When this pattern contains no meta characters, we * check if the object exists. If it exists, the Tcl_Obj is converted to * the cmd-type. If it does not exit, the function using this pattern will * fail. If the pattern contains meta characters, we prepend to the pattern * "::" if necessary to avoid errors, if one specifies a pattern object * without the prefix. In this case, the patternObj is is of plain type. * The resulting patternObj has always the refCount incremented, which has * to be decremented by the caller.x * * Results: * Tcl result code. * * Side effects: * Incremented refCount for the patternObj. * *---------------------------------------------------------------------- */ static int ConvertToObjpattern(Tcl_Interp *interp, Tcl_Obj *objPtr, Nsf_Param CONST *UNUSED(pPtr), ClientData *clientData, Tcl_Obj **outObjPtr) { Tcl_Obj *patternObj = objPtr; CONST char *pattern = ObjStr(objPtr); if (NoMetaChars(pattern)) { /* * We have no meta characters, we try to check for an existing object */ NsfObject *object = NULL; GetObjectFromObj(interp, objPtr, &object); if (object) { patternObj = object->cmdName; } } else { /* * We have a pattern and meta characters, we might have * to prefix it to ovoid obvious errors: since all object * names are prefixed with ::, we add this prefix automatically * to the match pattern, if it does not exist. */ if (*pattern != ':' && *pattern+1 != ':') { patternObj = Tcl_NewStringObj("::", 2); Tcl_AppendLimitedToObj(patternObj, pattern, -1, INT_MAX, NULL); } } if (patternObj) { INCR_REF_COUNT2("patternObj", patternObj); } *clientData = (ClientData)patternObj; /* The following assert does not hold here, since we have a direct call to the converter assert(*outObjPtr == objPtr); */ *outObjPtr = objPtr; return TCL_OK; } static Tcl_Obj * ParamCheckObj(CONST char *start, size_t len) { Tcl_Obj *checker = Tcl_NewStringObj("type=", 5); Tcl_AppendLimitedToObj(checker, start, len, INT_MAX, NULL); return checker; } static int ParamOptionSetConverter(Tcl_Interp *interp, Nsf_Param *paramPtr, CONST char *typeName, Nsf_TypeConverter *converter) { if (paramPtr->converter) { return NsfPrintError(interp, "refuse to redefine parameter type of '%s' from type '%s' to type '%s'", paramPtr->name, paramPtr->type, typeName); } paramPtr->converter = converter; paramPtr->nrArgs = 1; paramPtr->type = typeName; return TCL_OK; } /* *---------------------------------------------------------------------- * Unescape -- * * Unescape double commas in the provided Tcl_Obj. * * Results: * None * * Side effects: * Potentially shortend string content * *---------------------------------------------------------------------- */ static void Unescape(Tcl_Obj *objPtr) { int i, j, l = Tcl_GetCharLength(objPtr); char *string = ObjStr(objPtr); for (i = 0; i < l; i++) { if (string[i] == ',' && string[i+1] == ',') { for (j = i+1; j < l; j++) { string[j] = string[j+1]; } l--; i++; } } Tcl_SetObjLength(objPtr, l); } /* *---------------------------------------------------------------------- * ParamOptionParse -- * * Parse a single parameter option of a parameter. The parameter option * string is passed in as second argument, the sizes start and remainder * flag the offsets in the string. As a result, the fields of the parameter * structure are updated. * * Results: * Tcl result code, updated fields in the Nsf_Param structure. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int ParamOptionParse(Tcl_Interp *interp, CONST char *argString, size_t start, size_t optionLength, int disallowedOptions, Nsf_Param *paramPtr, int unescape) { CONST char *dotdot, *option = argString + start; int result = TCL_OK; /* fprintf(stderr, "ParamOptionParse name %s, option '%s' (%ld) disallowed %.6x\n", paramPtr->name, option, start, disallowedOptions);*/ if (strncmp(option, "required", MAX(3, optionLength)) == 0) { paramPtr->flags |= NSF_ARG_REQUIRED; } else if (strncmp(option, "optional", MAX(3, optionLength)) == 0) { paramPtr->flags &= ~NSF_ARG_REQUIRED; } else if (strncmp(option, "substdefault", 12) == 0) { paramPtr->flags |= NSF_ARG_SUBST_DEFAULT; } else if (strncmp(option, "convert", 7) == 0) { paramPtr->flags |= NSF_ARG_IS_CONVERTER; } else if (strncmp(option, "initcmd", 7) == 0) { if (unlikely(paramPtr->flags & (NSF_ARG_CMD|NSF_ARG_ALIAS|NSF_ARG_FORWARD))) { return NsfPrintError(interp, "parameter option 'initcmd' not valid in this option combination"); } paramPtr->flags |= NSF_ARG_INITCMD; } else if (strncmp(option, "cmd", 3) == 0) { if (unlikely(paramPtr->flags & (NSF_ARG_INITCMD|NSF_ARG_ALIAS|NSF_ARG_FORWARD))) { return NsfPrintError(interp, "parameter option 'cmd' not valid in this option combination"); } paramPtr->flags |= NSF_ARG_CMD; } else if (strncmp(option, "alias", 5) == 0) { if (unlikely(paramPtr->flags & (NSF_ARG_INITCMD|NSF_ARG_CMD|NSF_ARG_FORWARD))) { return NsfPrintError(interp, "parameter option 'alias' not valid in this option combination"); } paramPtr->flags |= NSF_ARG_ALIAS; } else if (strncmp(option, "forward", 7) == 0) { if (unlikely(paramPtr->flags & (NSF_ARG_INITCMD|NSF_ARG_CMD|NSF_ARG_ALIAS))) { return NsfPrintError(interp, "parameter option 'forward' not valid in this option combination"); } paramPtr->flags |= NSF_ARG_FORWARD; } else if (strncmp(option, "slotassign", 10) == 0) { if (unlikely(paramPtr->slotObj == NULL)) { return NsfPrintError(interp, "parameter option 'slotassign' must follow 'slot='"); } paramPtr->flags |= NSF_ARG_SLOTASSIGN; } else if (strncmp(option, "slotinitialize", 14) == 0) { if (unlikely(paramPtr->slotObj == NULL)) { return NsfPrintError(interp, "parameter option 'slotinit' must follow 'slot='"); } paramPtr->flags |= NSF_ARG_SLOTINITIALIZE; } else if ((dotdot = strnstr(option, "..", optionLength-1))) { /* check lower bound */ if (*option == '0') { paramPtr->flags |= NSF_ARG_ALLOW_EMPTY; } else if (unlikely(*option != '1')) { return NsfPrintError(interp, "lower bound of multiplicity in %s not supported", argString); } /* check upper bound */ option = dotdot + 2; if (*option == '*' || *option == 'n') { if (unlikely((paramPtr->flags & (NSF_ARG_SWITCH)) != 0)) { return NsfPrintError(interp, "upper bound of multiplicity of '%c' not allowed for \"switch\"\n", *option); } paramPtr->flags |= NSF_ARG_MULTIVALUED; } else if (*option != '1') { return NsfPrintError(interp, "upper bound of multiplicity in %s not supported", argString); } } else if (strncmp(option, "noarg", 5) == 0) { if ((paramPtr->flags & NSF_ARG_ALIAS) == 0) { return NsfPrintError(interp, "parameter option \"noarg\" only allowed for parameter type \"alias\""); } paramPtr->flags |= NSF_ARG_NOARG; paramPtr->nrArgs = 0; } else if (strncmp(option, "noleadingdash", 13) == 0) { if (*paramPtr->name == '-') { return NsfPrintError(interp, "parameter option 'noleadingdash' only allowed for positional parameters"); } paramPtr->flags |= NSF_ARG_NOLEADINGDASH; } else if (strncmp(option, "noconfig", 8) == 0) { if (disallowedOptions != NSF_DISALLOWED_ARG_OBJECT_PARAMETER) { return NsfPrintError(interp, "parameter option 'noconfig' only allowed for object parameters"); } paramPtr->flags |= NSF_ARG_NOCONFIG; } else if (strncmp(option, "args", 4) == 0) { if ((paramPtr->flags & NSF_ARG_ALIAS) == 0) { return NsfPrintError(interp, "parameter option \"args\" only allowed for parameter type \"alias\""); } result = ParamOptionSetConverter(interp, paramPtr, "args", ConvertToNothing); } else if (optionLength >= 4 && strncmp(option, "arg=", 4) == 0) { if (paramPtr->converter != ConvertViaCmd) { return NsfPrintError(interp, "parameter option 'arg=' only allowed for user-defined converter"); } if (paramPtr->converterArg) {DECR_REF_COUNT(paramPtr->converterArg);} paramPtr->converterArg = Tcl_NewStringObj(option + 4, optionLength - 4); /* * In case, we know that we have to unescape double commas, do it here... */ if (unlikely(unescape)) { Unescape(paramPtr->converterArg); } INCR_REF_COUNT(paramPtr->converterArg); } else if (strncmp(option, "switch", 6) == 0) { if (*paramPtr->name != '-') { return NsfPrintError(interp, "invalid parameter type \"switch\" for argument \"%s\"; " "type \"switch\" only allowed for non-positional arguments", paramPtr->name); } else if (paramPtr->flags & NSF_ARG_METHOD_INVOCATION) { return NsfPrintError(interp, "parameter invocation types cannot be used with option 'switch'"); } result = ParamOptionSetConverter(interp, paramPtr, "switch", Nsf_ConvertToSwitch); paramPtr->flags |= NSF_ARG_SWITCH; paramPtr->nrArgs = 0; assert(paramPtr->defaultValue == NULL); paramPtr->defaultValue = Tcl_NewBooleanObj(0); INCR_REF_COUNT(paramPtr->defaultValue); } else if (strncmp(option, "integer", MAX(3, optionLength)) == 0) { result = ParamOptionSetConverter(interp, paramPtr, "integer", Nsf_ConvertToInteger); } else if (strncmp(option, "int32", 5) == 0) { result = ParamOptionSetConverter(interp, paramPtr, "int32", Nsf_ConvertToInt32); } else if (strncmp(option, "boolean", 7) == 0) { result = ParamOptionSetConverter(interp, paramPtr, "boolean", Nsf_ConvertToBoolean); } else if (strncmp(option, "object", 6) == 0) { result = ParamOptionSetConverter(interp, paramPtr, "object", Nsf_ConvertToObject); } else if (strncmp(option, "class", 5) == 0) { result = ParamOptionSetConverter(interp, paramPtr, "class", Nsf_ConvertToClass); } else if (strncmp(option, "metaclass", 9) == 0) { result = ParamOptionSetConverter(interp, paramPtr, "class", Nsf_ConvertToClass); paramPtr->flags |= NSF_ARG_METACLASS; } else if (strncmp(option, "baseclass", 9) == 0) { result = ParamOptionSetConverter(interp, paramPtr, "class", Nsf_ConvertToClass); paramPtr->flags |= NSF_ARG_BASECLASS; } else if (strncmp(option, "mixinreg", 8) == 0) { result = ParamOptionSetConverter(interp, paramPtr, "mixinreg", Nsf_ConvertToMixinreg); } else if (strncmp(option, "filterreg", 9) == 0) { result = ParamOptionSetConverter(interp, paramPtr, "filterreg", Nsf_ConvertToFilterreg); } else if (strncmp(option, "parameter", 9) == 0) { result = ParamOptionSetConverter(interp, paramPtr, "parameter", Nsf_ConvertToParameter); } else if (optionLength >= 6 && strncmp(option, "type=", 5) == 0) { if (paramPtr->converter != Nsf_ConvertToObject && paramPtr->converter != Nsf_ConvertToClass) return NsfPrintError(interp, "parameter option 'type=' only allowed for parameter types 'object' and 'class'"); if (paramPtr->converterArg) {DECR_REF_COUNT(paramPtr->converterArg);} paramPtr->converterArg = Tcl_NewStringObj(option + 5, optionLength - 5); if (unlikely(unescape)) { Unescape(paramPtr->converterArg); } INCR_REF_COUNT(paramPtr->converterArg); } else if (optionLength >= 6 && strncmp(option, "slot=", 5) == 0) { if (paramPtr->slotObj) {DECR_REF_COUNT(paramPtr->slotObj);} paramPtr->slotObj = Tcl_NewStringObj(option + 5, optionLength - 5); if (unlikely(unescape)) { Unescape(paramPtr->slotObj); } INCR_REF_COUNT(paramPtr->slotObj); } else if (optionLength >= 6 && strncmp(option, "method=", 7) == 0) { if ((paramPtr->flags & (NSF_ARG_ALIAS|NSF_ARG_FORWARD)) == 0) { return NsfPrintError(interp, "parameter option 'method=' only allowed for parameter types 'alias' and 'forward'"); } if (paramPtr->method) {DECR_REF_COUNT(paramPtr->method);} paramPtr->method = Tcl_NewStringObj(option + 7, optionLength - 7); if (unlikely(unescape)) { Unescape(paramPtr->method); } INCR_REF_COUNT(paramPtr->method); } else { Tcl_DString ds, *dsPtr = &ds; if (option[0] == '\0') { NsfLog(interp, NSF_LOG_WARN, "empty parameter option ignored"); return TCL_OK; } Tcl_DStringInit(dsPtr); Tcl_DStringAppend(dsPtr, option, optionLength); if (paramPtr->converter) { NsfPrintError(interp, "parameter option '%s' unknown for parameter type '%s'", Tcl_DStringValue(dsPtr), paramPtr->type); Tcl_DStringFree(dsPtr); return TCL_ERROR; } if (Nsf_PointerTypeLookup(interp, Tcl_DStringValue(dsPtr))) { /* * Check, if the option refers to a pointer converter */ ParamOptionSetConverter(interp, paramPtr, Tcl_DStringValue(dsPtr), Nsf_ConvertToPointer); Tcl_DStringFree(dsPtr); } else { int i, found = -1; /* * The option is still unknown, check the Tcl string-is checkers */ Tcl_DStringFree(dsPtr); for (i=0; stringTypeOpts[i]; i++) { /* * Do not allow abbreviations, so the additional strlen checks * for a full match */ if (strncmp(option, stringTypeOpts[i], optionLength) == 0 && strlen(stringTypeOpts[i]) == optionLength) { found = i; break; } } if (found > -1) { /* converter is stringType */ result = ParamOptionSetConverter(interp, paramPtr, "stringtype", Nsf_ConvertToTclobj); if (paramPtr->converterArg) {DECR_REF_COUNT(paramPtr->converterArg);} paramPtr->converterArg = Tcl_NewStringObj(stringTypeOpts[i], -1); INCR_REF_COUNT(paramPtr->converterArg); } else { /* * The parameter option is still unknown. We assume that the parameter * option identifies a user-defined argument checker, implemented as a * method. */ if (paramPtr->converterName) {DECR_REF_COUNT2("converterNameObj",paramPtr->converterName);} paramPtr->converterName = ParamCheckObj(option, optionLength); INCR_REF_COUNT2("converterNameObj", paramPtr->converterName); result = ParamOptionSetConverter(interp, paramPtr, ObjStr(paramPtr->converterName), ConvertViaCmd); } } } if ((paramPtr->flags & disallowedOptions)) { return NsfPrintError(interp, "parameter option '%s' not allowed", option); } if (unlikely((paramPtr->flags & NSF_ARG_METHOD_INVOCATION) && (paramPtr->flags & NSF_ARG_NOCONFIG))) { return NsfPrintError(interp, "parameter option 'noconfig' cannot used together with this type of object parameter"); } return result; } /* *---------------------------------------------------------------------- * ParamParse -- * * Parse a a single parameter with a possible default provided in the form * of an Tcl_Obj. * * Results: * Tcl result code * * Side effects: * None. * *---------------------------------------------------------------------- */ static int ParamParse(Tcl_Interp *interp, Tcl_Obj *procNameObj, Tcl_Obj *arg, int disallowedFlags, Nsf_Param *paramPtr, int *possibleUnknowns, int *plainParams, int *nrNonposArgs) { int result, npac, isNonposArgument, parensCount; size_t length, j; CONST char *argString, *argName; Tcl_Obj **npav; paramPtr->paramObj = arg; INCR_REF_COUNT(paramPtr->paramObj); result = Tcl_ListObjGetElements(interp, arg, &npac, &npav); if (unlikely(result != TCL_OK || npac < 1 || npac > 2)) { DECR_REF_COUNT(paramPtr->paramObj); return NsfPrintError(interp, "wrong # of elements in parameter definition for method '%s'" " (should be 1 or 2 list elements): %s", ObjStr(procNameObj), ObjStr(arg)); } argString = ObjStr(npav[0]); length = strlen(argString); /* * Per default parameter have exactly one argument; types without arguments * (like "switch") have to set their nrArgs explicitly. */ paramPtr->nrArgs = 1; isNonposArgument = *argString == '-'; if (isNonposArgument) { argName = argString+1; (*nrNonposArgs) ++; } else { argName = argString; paramPtr->flags |= NSF_ARG_REQUIRED; /* positional arguments are required unless we have a default */ } /*fprintf(stderr, "... parsing '%s', name '%s' argString '%s' \n", ObjStr(arg), argName, argString);*/ /* * Find the first ':' outside of parens; the name of the parameter might be * in array syntax, the array index might contain ":", "," etc. */ parensCount = 0; for (j=0; j 0 && argString[j] == ')') { parensCount --; continue; } if (argString[j] == '(') { parensCount ++; continue; } if (parensCount == 0 && argString[j] == ':') { break; } } if (argString[j] == ':') { /* we found a ':' */ size_t l, start, end; int unescape = 0; /* get parameter name */ STRING_NEW(paramPtr->name, argString, j); paramPtr->nameObj = Tcl_NewStringObj(argName, isNonposArgument ? j-1 : j); INCR_REF_COUNT(paramPtr->nameObj); /* skip space at begin */ for (start = j+1; start0 && isspace((int)argString[end-1]); end--); result = ParamOptionParse(interp, argString, start, end-start, disallowedFlags, paramPtr, unescape); unescape = 0; if (unlikely(result != TCL_OK)) { goto param_error; } l++; /* skip space from begin */ for (start = l; start0 && isspace((int)argString[end-1]); end--); /* process last option */ if (end-start > 0) { result = ParamOptionParse(interp, argString, start, end-start, disallowedFlags, paramPtr, unescape); if (unlikely(result != TCL_OK)) { goto param_error; } } } else { /* no ':', the whole arg is the name, we have no options */ STRING_NEW(paramPtr->name, argString, length); if (isNonposArgument) { paramPtr->nameObj = Tcl_NewStringObj(argName, length-1); } else { (*plainParams) ++; paramPtr->nameObj = Tcl_NewStringObj(argName, length); } INCR_REF_COUNT(paramPtr->nameObj); } /* if we have two arguments in the list, the second one is a default value */ if (npac == 2) { if (disallowedFlags & NSF_ARG_HAS_DEFAULT) { NsfPrintError(interp, "parameter \"%s\" is not allowed to have default \"%s\"", argString, ObjStr(npav[1])); goto param_error; } /* if we have for some reason already a default value, free it */ if (paramPtr->defaultValue) { DECR_REF_COUNT(paramPtr->defaultValue); } paramPtr->defaultValue = Tcl_DuplicateObj(npav[1]); INCR_REF_COUNT(paramPtr->defaultValue); /* * The argument will be not required for an invocation, since we * have a default. */ paramPtr->flags &= ~NSF_ARG_REQUIRED; } else if (paramPtr->flags & NSF_ARG_SUBST_DEFAULT) { NsfPrintError(interp, "parameter option substdefault specified for parameter \"%s\"" " without default value", paramPtr->name); goto param_error; } /* postprocessing the parameter options */ if (paramPtr->converter == NULL) { /* * If no converter is set, use the default converter */ paramPtr->converter = Nsf_ConvertToTclobj; } else if (paramPtr->converter == ConvertToNothing) { if (paramPtr->flags & (NSF_ARG_ALLOW_EMPTY|NSF_ARG_MULTIVALUED)) { NsfPrintError(interp, "multiplicity settings for variable argument parameter \"%s\" not allowed", paramPtr->name); goto param_error; } } /* * Check for application specific value checkers and converters */ /*fprintf(stderr, "parm %s: slotObj %p viaCmd? %d\n", paramPtr->name, paramPtr->slotObj, paramPtr->converter == ConvertViaCmd);*/ if ((paramPtr->slotObj || paramPtr->converter == ConvertViaCmd) && paramPtr->type) { CONST char *converterNameString; Tcl_Obj *converterNameObj; NsfObject *paramObject; Tcl_Command cmd; NsfClass *pcl = NULL; result = GetObjectFromObj(interp, paramPtr->slotObj ? paramPtr->slotObj : NsfGlobalObjs[NSF_METHOD_PARAMETER_SLOT_OBJ], ¶mObject); if (unlikely(result != TCL_OK)) { goto param_error; } if (paramPtr->converterName == NULL) { converterNameObj = ParamCheckObj(paramPtr->type, strlen(paramPtr->type)); INCR_REF_COUNT2("converterNameObj",converterNameObj); } else { converterNameObj = paramPtr->converterName; } converterNameString = ObjStr(converterNameObj); cmd = ObjectFindMethod(interp, paramObject, converterNameObj, &pcl); /*fprintf(stderr, "locating %s on %s returns %p (%s)\n", ObjStr(converterNameObj), ObjectName(paramObject), cmd, ClassName(pcl));*/ if (cmd == NULL) { if (paramPtr->converter == ConvertViaCmd) { NsfLog(interp, NSF_LOG_WARN, "Could not find value checker %s defined on %s", converterNameString, ObjectName(paramObject)); paramPtr->flags |= NSF_ARG_CURRENTLY_UNKNOWN; /* TODO: for the time being, we do not return an error here */ } } else if (paramPtr->converter != ConvertViaCmd && paramPtr->slotObj && strcmp(ObjStr(paramPtr->slotObj), NsfGlobalStrings[NSF_METHOD_PARAMETER_SLOT_OBJ]) != 0) { NsfLog(interp, NSF_LOG_WARN, "Checker method %s defined on %s shadows built-in converter", converterNameString, ObjectName(paramObject)); if (paramPtr->converterName == NULL) { paramPtr->converterName = converterNameObj; paramPtr->converter = NULL; result = ParamOptionSetConverter(interp, paramPtr, converterNameString, ConvertViaCmd); if (unlikely(result != TCL_OK)) { if (converterNameObj != paramPtr->converterName) { DECR_REF_COUNT2("converterNameObj", converterNameObj); } goto param_error; } } } if ((paramPtr->flags & NSF_ARG_IS_CONVERTER) && paramPtr->converter != ConvertViaCmd) { NsfPrintError(interp, "option 'convert' only allowed for application-defined converters"); if (converterNameObj != paramPtr->converterName) { DECR_REF_COUNT2("converterNameObj",converterNameObj); } goto param_error; } if (converterNameObj != paramPtr->converterName) { DECR_REF_COUNT2("converterNameObj", converterNameObj); } } /* * If the argument has no arguments and it is positional, it can't be * required. */ if (paramPtr->nrArgs == 0 && *paramPtr->name != '-' && paramPtr->flags & NSF_ARG_REQUIRED) { paramPtr->flags &= ~NSF_ARG_REQUIRED; } /* * If the argument is not required and no default value is * specified, we have to handle in the client code (eg. in the * canonical arg handlers for scripted methods) the unknown value * (e.g. don't set/unset a variable) */ if (!(paramPtr->flags & NSF_ARG_REQUIRED) && paramPtr->defaultValue == NULL) { (*possibleUnknowns)++; } return TCL_OK; param_error: ParamFree(paramPtr); paramPtr->name = NULL; return TCL_ERROR; } /* *---------------------------------------------------------------------- * ParamDefsParse -- * * Parse a list of parameters in the form of Tcl_Objs into a parsedParamPtr * structure (last argument). The argument allowedOptions is used to flag, * what parameter options are generally allowed (typically different for * method and object parameters). Unless forceParamdefs is set, the parsed * parameter structure is only returned when needed (i.e. when not all * parameters are plain parameters). * * Results: * Tcl result code, parsedParameter structure in last argument (allocated * by the caller). * * Side effects: * None. * *---------------------------------------------------------------------- */ static int ParamDefsParse(Tcl_Interp *interp, Tcl_Obj *procNameObj, Tcl_Obj *paramSpecObjs, int allowedOptinons, int forceParamdefs, NsfParsedParam *parsedParamPtr) { Tcl_Obj **argsv; int result, argsc; parsedParamPtr->paramDefs = NULL; parsedParamPtr->possibleUnknowns = 0; result = Tcl_ListObjGetElements(interp, paramSpecObjs, &argsc, &argsv); if (unlikely(result != TCL_OK)) { return NsfPrintError(interp, "cannot break down non-positional args: %s", ObjStr(paramSpecObjs)); } if (argsc > 0) { Nsf_Param *paramsPtr, *paramPtr, *lastParamPtr; int i, possibleUnknowns = 0, plainParams = 0, nrNonposArgs = 0; NsfParamDefs *paramDefs; paramPtr = paramsPtr = ParamsNew(argsc); for (i=0; i < argsc; i++, paramPtr++) { result = ParamParse(interp, procNameObj, argsv[i], allowedOptinons, paramPtr, &possibleUnknowns, &plainParams, &nrNonposArgs); if (result == TCL_OK && paramPtr->converter == ConvertToNothing && i < argsc-1) { result = NsfPrintError(interp, "parameter option \"args\" invalid for parameter \"%s\"; only allowed for last parameter", paramPtr->name); } if (unlikely(result != TCL_OK)) { ParamsFree(paramsPtr); return result; } /* every parameter must have at least a name set */ assert(paramPtr->name); } #if defined(NSF_WITH_VALUE_WARNINGS) if (nrNonposArgs > 0 && argsc > 1) { for (i=0; i < argsc; i++) { (paramsPtr + i)->flags |= NSF_ARG_CHECK_NONPOS; } } #endif /* * If all arguments are good old Tcl arguments, there is no need * to use the parameter definition structure. */ if (plainParams == argsc && !forceParamdefs) { ParamsFree(paramsPtr); return TCL_OK; } /* fprintf(stderr, "we need param definition structure for {%s}, argsc %d plain %d\n", ObjStr(args), argsc, plainParams); */ /* * Check the last argument. If the last argument is named 'args', * force converter and make it non-required. */ lastParamPtr = paramPtr - 1; if (isArgsString(lastParamPtr->name)) { lastParamPtr->converter = ConvertToNothing; lastParamPtr->flags &= ~NSF_ARG_REQUIRED; } paramDefs = ParamDefsNew(); paramDefs->paramsPtr = paramsPtr; paramDefs->nrParams = paramPtr-paramsPtr; /*fprintf(stderr, "method %s serial %d paramDefs %p ifsize %ld, possible unknowns = %d,\n", ObjStr(procNameObj), paramDefs->serial, paramDefs, paramPtr-paramsPtr, possibleUnknowns);*/ parsedParamPtr->paramDefs = paramDefs; parsedParamPtr->possibleUnknowns = possibleUnknowns; } return TCL_OK; } /* *---------------------------------------------------------------------- * ParameterMethodForwardDispatch -- * * Dispatch a forwarding method provided via parameter definition. * * The current implementation performs for every object * parameter forward the full cycle of * * (a) splitting the spec, * (b) convert it to a the client data structure, * (c) invoke forward, * (d) free client data structure * * In the future, it should convert to the client data * structure just once and free it with the disposal of the * parameter. This could be achieved * * Results: * Tcl result code * * Side effects: * The called function might side-effect. * *---------------------------------------------------------------------- */ static int ParameterMethodForwardDispatch(Tcl_Interp *interp, NsfObject *object, Nsf_Param *paramPtr, Tcl_Obj *newValue, NsfCallStackContent *cscPtr) { Tcl_Obj **nobjv, *ov[3], *methodObj, *forwardSpec; ForwardCmdClientData *tcd = NULL; int result, oc, nobjc; assert(paramPtr->flags & NSF_ARG_FORWARD); /* */ forwardSpec = paramPtr->method ? paramPtr->method : NULL; /* different default? */ if (forwardSpec == NULL) { return NsfPrintError(interp, "forward: no spec available\n"); } result = Tcl_ListObjGetElements(interp, forwardSpec, &nobjc, &nobjv); if (result != TCL_OK) { return result; } methodObj = paramPtr->nameObj; result = ForwardProcessOptions(interp, methodObj, NULL /*withDefault*/, 0 /*withEarlybinding*/, NULL /*withMethodprefix*/, 0 /*withObjframe*/, NULL /*withOnerror*/, 0 /*withVerbose*/, nobjv[0], nobjc-1, nobjv+1, &tcd); if (result != TCL_OK) { if (tcd) ForwardCmdDeleteProc(tcd); return result; } /*fprintf(stderr, "parameter %s forward spec <%s> After Options obj %s method %s\n", ObjStr(paramPtr->nameObj), ObjStr(forwardSpec), ObjectName(object), ObjStr(methodObj));*/ tcd->object = object; oc = 1; ov[0] = methodObj; if (paramPtr->nrArgs == 1 && newValue) { ov[oc] = newValue; oc ++; } /* * Mark the intermittent CSC frame as INACTIVE, so that, e.g., * call-stack traversals seeking active frames ignore it. */ if (cscPtr) { cscPtr->frameType = NSF_CSC_TYPE_INACTIVE; } result = NsfForwardMethod(tcd, interp, oc, ov); ForwardCmdDeleteProc(tcd); return result; } /* *---------------------------------------------------------------------- * ParameterMethodDispatch -- * * Dispatch a method provided via parameter definition. The function checks * the parameter definition, builds a argument list for the function call * and invokes finally the configured cmd. This function is typically * called from configure. * * Results: * Tcl result code * * Side effects: * The called function might side-effect. * *---------------------------------------------------------------------- */ static int ParameterMethodDispatch(Tcl_Interp *interp, NsfObject *object, Nsf_Param *paramPtr, Tcl_Obj *newValue, CallFrame *uplevelVarFramePtr, CONST char *initString, Tcl_Obj *lastObj, Tcl_Obj **nextObjPtr, int nrRemainingArgs) { CallFrame *varFramePtr = Tcl_Interp_varFramePtr(interp); NsfCallStackContent csc, *cscPtr = &csc; CallFrame frame2, *framePtr2 = &frame2; int result = TCL_OK; /* * The current call-frame of configure uses an obj-frame, such * that setvar etc. are able to access variables like "a" as a * local variable. However, in the init block, we do not like * that behavior, since this should look like like a proc body. * So we push yet another call-frame without providing the * var-frame. * * The new frame will have the namespace of the caller to avoid * the current obj-frame. Nsf_PushFrameCsc() will establish a * CMETHOD frame. */ Tcl_Interp_varFramePtr(interp) = varFramePtr->callerVarPtr; cscPtr->flags = 0; CscInit(cscPtr, object, object->cl /*cl*/, NULL /*cmd*/, NSF_CSC_TYPE_PLAIN, 0, NsfGlobalStrings[NSF_CONFIGURE]); Nsf_PushFrameCsc(interp, cscPtr, framePtr2); if (paramPtr->flags & (NSF_ARG_INITCMD|NSF_ARG_CMD)) { /* cscPtr->cmdPtr = NSFindCommand(interp, "::eval"); */ result = Tcl_EvalObjEx(interp, newValue, TCL_EVAL_DIRECT); } else if (paramPtr->flags & NSF_ARG_ALIAS) { Tcl_Obj *methodObj, **ovPtr, *ov0; CONST char *methodString; int oc = 0; /* * Restore the variable frame context as found at the original call * site of configure(). Note that we do not have to revert this * context change when leaving this configure() context because a * surrounding [uplevel] will correct the call-stack context for us ... */ if (uplevelVarFramePtr) { Tcl_Interp_varFramePtr(interp) = uplevelVarFramePtr; } /* * Mark the intermittent CSC frame as INACTIVE, so that, e.g., * call-stack traversals seeking active frames ignore it. */ cscPtr->frameType = NSF_CSC_TYPE_INACTIVE; /* * If "method=" was given, use it as method name */ methodObj = paramPtr->method ? paramPtr->method : paramPtr->nameObj; methodString = ObjStr(methodObj); /*fprintf(stderr, "ALIAS %s, nrargs %d converter %p toNothing %d i %d oc %d, pcPtr->lastObjc %d\n", paramPtr->name, paramPtr->nrArgs, paramPtr->converter, paramPtr->converter == ConvertToNothing, i, objc, pc.lastObjc);*/ if (paramPtr->converter == ConvertToNothing) { /* * We are using the varargs interface; pass all remaining args into * the called method. */ if (newValue == paramPtr->defaultValue) { /* * Use the default. */ if (Tcl_ListObjGetElements(interp, paramPtr->defaultValue, &oc, &ovPtr) != TCL_OK) { goto method_arg_done; } ov0 = *ovPtr; ovPtr ++; } else { /* * Use actual args. */ ov0 = lastObj; ovPtr = nextObjPtr; oc = nrRemainingArgs; } } else { /* * A simple alias, receives no (when noarg was specified) or a * single argument (which might be the default value). */ if (paramPtr->nrArgs == 1) { oc = 1; ov0 = newValue; } else { oc = 0; ov0 = NULL; } ovPtr = NULL; } /* * Check, if we have an object parameter alias for the constructor. * Since we require the object system for the current object to * determine its object system configuration, we can't do this at * parameter compile time. */ if (initString && *initString == *methodString && strcmp(initString, methodString) == 0) { result = DispatchInitMethod(interp, object, oc, &ov0, 0); } else { /*fprintf(stderr, "call alias %s with methodObj %s.%s oc %d, nrArgs %d '%s'\n", paramPtr->name, ObjectName(object), ObjStr(methodObj), oc, paramPtr->nrArgs, ObjStr(newValue));*/ Tcl_ResetResult(interp); result = NsfCallMethodWithArgs(interp, (Nsf_Object*)object, methodObj, ov0, oc, ovPtr, NSF_CSC_IMMEDIATE|NSF_CM_IGNORE_PERMISSIONS); } } else { /* must be NSF_ARG_FORWARD */ assert(paramPtr->flags & NSF_ARG_FORWARD); result = ParameterMethodForwardDispatch(interp, object, paramPtr, newValue, cscPtr); } method_arg_done: /* * Pop previously stacked frame for eval context and set the * varFramePtr to the previous value. */ Nsf_PopFrameCsc(interp, framePtr2); CscListRemove(interp, cscPtr, NULL); CscFinish(interp, cscPtr, result, "converter object frame"); Tcl_Interp_varFramePtr(interp) = varFramePtr; /* fprintf(stderr, "NsfOConfigureMethod_ attribute %s evaluated %s => (%d)\n", ObjStr(paramPtr->nameObj), ObjStr(newValue), result);*/ if (likely(result == TCL_OK)) { if (paramPtr->flags & NSF_ARG_CMD && RUNTIME_STATE(interp)->doKeepcmds) { fprintf(stderr, "setting %s(%s) /%s/\n", ObjStr(NsfGlobalObjs[NSF_ARRAY_CMD]), ObjStr(paramPtr->nameObj), ObjStr(newValue)); Tcl_ObjSetVar2(interp, NsfGlobalObjs[NSF_ARRAY_CMD], paramPtr->nameObj, newValue, 0); } } return result; } static int MakeProc(Tcl_Namespace *nsPtr, NsfAssertionStore *aStore, Tcl_Interp *interp, Tcl_Obj *nameObj, Tcl_Obj *args, Tcl_Obj *body, Tcl_Obj *precondition, Tcl_Obj *postcondition, NsfObject *defObject, NsfObject *regObject, int withPer_object, int withInner_namespace) { Tcl_CallFrame frame, *framePtr = &frame; CONST char *methodName = ObjStr(nameObj); NsfParsedParam parsedParam; Tcl_Obj *ov[4]; int result; assert(*methodName != ':'); if (regObject == NULL) {regObject = defObject;} /* Check, if we are allowed to redefine the method */ result = CanRedefineCmd(interp, nsPtr, defObject, methodName); if (likely(result == TCL_OK)) { /* Yes, so obtain an method parameter definitions */ result = ParamDefsParse(interp, nameObj, args, NSF_DISALLOWED_ARG_METHOD_PARAMETER, 0, &parsedParam); } if (unlikely(result != TCL_OK)) { return result; } ov[0] = NULL; /*objv[0];*/ ov[1] = nameObj; if (parsedParam.paramDefs) { Nsf_Param *pPtr; Tcl_Obj *argList = Tcl_NewListObj(0, NULL); for (pPtr = parsedParam.paramDefs->paramsPtr; pPtr->name; pPtr++) { if (*pPtr->name == '-') { Tcl_ListObjAppendElement(interp, argList, Tcl_NewStringObj(pPtr->name+1, -1)); } else { Tcl_ListObjAppendElement(interp, argList, Tcl_NewStringObj(pPtr->name, -1)); } } ov[2] = argList; INCR_REF_COUNT(ov[2]); /*fprintf(stderr, "final arglist = <%s>\n", ObjStr(argList)); */ ov[3] = AddPrefixToBody(body, 1, &parsedParam); } else { /* no parameter handling needed */ ov[2] = args; ov[3] = AddPrefixToBody(body, 0, &parsedParam); } Tcl_PushCallFrame(interp, (Tcl_CallFrame *)framePtr, nsPtr, 0); /* create the method in the provided namespace */ result = Tcl_ProcObjCmd(NULL, interp, 4, ov); if (result == TCL_OK) { /* retrieve the defined proc */ Proc *procPtr = FindProcMethod(nsPtr, methodName); if (procPtr) { /* modify the cmd of the proc to set the current namespace for the body */ if (withInner_namespace) { /* * Set the namespace of the method as inside of the class. */ if (!regObject->nsPtr) { MakeObjNamespace(interp, regObject); } /*fprintf(stderr, "obj %s\n", ObjectName(defObject)); fprintf(stderr, "ns %p defObject->ns %p\n", nsPtr, defObject->nsPtr); fprintf(stderr, "ns %s defObject->ns %s\n", nsPtr->fullName, defObject->nsPtr->fullName); fprintf(stderr, "old %s\n", procPtr->cmdPtr->nsPtr->fullName);*/ procPtr->cmdPtr->nsPtr = (Namespace *)regObject->nsPtr; } else { /* * Set the namespace of the method to the same namespace the cmd of * the defObject has. */ procPtr->cmdPtr->nsPtr = ((Command *)regObject->id)->nsPtr; } ParamDefsStore((Tcl_Command)procPtr->cmdPtr, parsedParam.paramDefs); Tcl_SetObjResult(interp, MethodHandleObj(defObject, withPer_object, methodName)); result = TCL_OK; } } Tcl_PopCallFrame(interp); #if defined(NSF_WITH_ASSERTIONS) if (result == TCL_OK && (precondition || postcondition)) { AssertionAddProc(interp, methodName, aStore, precondition, postcondition); } #endif if (parsedParam.paramDefs) { DECR_REF_COUNT(ov[2]); } DECR_REF_COUNT2("resultBody", ov[3]); return result; } static int MakeMethod(Tcl_Interp *interp, NsfObject *defObject, NsfObject *regObject, NsfClass *cl, Tcl_Obj *nameObj, Tcl_Obj *args, Tcl_Obj *body, Tcl_Obj *precondition, Tcl_Obj *postcondition, int withInner_namespace) { CONST char *argsStr = ObjStr(args), *bodyStr = ObjStr(body), *nameStr = ObjStr(nameObj); int result; if (precondition && !postcondition) { return NsfPrintError(interp, "%s method '%s'; when specifying a precondition (%s)" " a postcondition must be specified as well", ClassName(cl), nameStr, ObjStr(precondition)); } if (*argsStr == 0 && *bodyStr == 0) { /* * Both, args and body are empty strings. This means we should delete the * method. */ if (RUNTIME_STATE(interp)->exitHandlerDestroyRound == NSF_EXITHANDLER_OFF) { /* * Don't delete methods via scripting during shutdown */ result = cl ? NsfRemoveClassMethod(interp, (Nsf_Class *)cl, nameStr) : NsfRemoveObjectMethod(interp, (Nsf_Object *)defObject, nameStr); } else { /* fprintf(stderr, "don't delete method %s during shutdown\n", nameStr); */ result = TCL_OK; } } else { #if defined(NSF_WITH_ASSERTIONS) NsfAssertionStore *aStore = NULL; if (precondition || postcondition) { if (cl) { NsfClassOpt *opt = NsfRequireClassOpt(cl); if (!opt->assertions) { opt->assertions = AssertionCreateStore(); } aStore = opt->assertions; } else { NsfObjectOpt *opt = NsfRequireObjectOpt(defObject); if (!opt->assertions) { opt->assertions = AssertionCreateStore(); } aStore = opt->assertions; } } result = MakeProc(cl ? cl->nsPtr : defObject->nsPtr, aStore, interp, nameObj, args, body, precondition, postcondition, defObject, regObject, cl == NULL, withInner_namespace); #else if (precondition) { NsfLog(interp, NSF_LOG_WARN, "Precondition %s provided, but not compiled with assertion enabled", ObjStr(precondition)); } else if (postcondition) { NsfLog(interp, NSF_LOG_WARN, "Postcondition %s provided, but not compiled with assertion enabled", ObjStr(postcondition)); } result = MakeProc(cl ? cl->nsPtr : defObject->nsPtr, NULL, interp, nameObj, args, body, NULL, NULL, defObject, regObject, cl == NULL, withInner_namespace); #endif } if (cl) { NsfInstanceMethodEpochIncr("MakeMethod"); /* could be a filter or filter inheritance ... update filter orders */ if (FilterIsActive(interp, nameStr)) { NsfClasses *subClasses = TransitiveSubClasses(cl); FilterInvalidateObjOrders(interp, cl, subClasses); NsfClassListFree(subClasses); } } else { NsfObjectMethodEpochIncr("MakeMethod"); /* could be a filter => recompute filter order */ FilterComputeDefined(interp, defObject); } return result; } /************************************************************************** * Begin Definition of nsf::proc (Tcl Procs with Parameter handling) **************************************************************************/ /* *---------------------------------------------------------------------- * NsfProcStubDeleteProc -- * * Tcl_CmdDeleteProc for NsfProcStubs. Is called, whenever a * NsfProcStub is deleted and frees the associated client data. * * Results: * None. * * Side effects: * Frees client-data * *---------------------------------------------------------------------- */ static void NsfProcStubDeleteProc(ClientData clientData) { NsfProcClientData *tcd = clientData; /*fprintf(stderr, "NsfProcStubDeleteProc received %p\n", clientData); fprintf(stderr, "... procName %s paramDefs %p\n", ObjStr(tcd->procName), tcd->paramDefs);*/ DECR_REF_COUNT2("procNameObj",tcd->procName); if (tcd->cmd) { NsfCommandRelease(tcd->cmd); } /* tcd->paramDefs is freed by NsfProcDeleteProc() */ FREE(NsfProcClientData, tcd); } /* *---------------------------------------------------------------------- * InvokeShadowedProc -- * * Call the proc specified in objc/objv; procNameObj should be used * for error messages. * * Results: * Tcl result code. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int InvokeShadowedProc(Tcl_Interp *interp, Tcl_Obj *procNameObj, Tcl_Command cmd, ParseContext *pcPtr) { Tcl_Obj *CONST *objv = pcPtr->full_objv; int objc = pcPtr->objc+1; int result; CONST char *fullMethodName = ObjStr(procNameObj); Tcl_CallFrame *framePtr; Proc *procPtr; #if defined(NSF_PROFILE) struct timeval trt; NsfRuntimeState *rst = RUNTIME_STATE(interp); if (rst->doProfile) { gettimeofday(&trt, NULL); } #endif CheckCStack(interp, "nsfProc", fullMethodName); /* * The code below is derived from the scripted method dispatch and just * slightly adapted to remove object dependencies. */ /*fprintf(stderr, "fullMethodName %s epoch %d\n", fullMethodName, Tcl_Command_cmdEpoch(cmd));*/ if (Tcl_Command_cmdEpoch(cmd)) { #if 1 /* * It seems, as someone messed around with the shadowed proc. For now, we * give up. */ return NsfPrintError(interp, "command '%s' is epoched", fullMethodName); #else /* * We could refetch the command ... */ cmd = Tcl_GetCommandFromObj(interp, procNameObj); if (unlikely(cmd == NULL)) { return NsfPrintError(interp, "cannot lookup command '%s'", fullMethodName); } if (unlikely(!CmdIsProc(cmd))) { return NsfPrintError(interp, "command '%s' is not a proc", fullMethodName); } /* * ... and update the refCounts */ NsfCommandRelease(tcd->cmd); tcd->cmd = cmd; NsfCommandPreserve(tcd->cmd); #endif } procPtr = (Proc *)Tcl_Command_objClientData(cmd); result = TclPushStackFrame(interp, &framePtr, (Tcl_Namespace *) procPtr->cmdPtr->nsPtr, (FRAME_IS_PROC)); if (likely(result == TCL_OK)) { unsigned int dummy = 0; result = ByteCompiled(interp, &dummy, procPtr, fullMethodName); } if (unlikely(result != TCL_OK)) { /* todo: really? error msg? */ return result; } Tcl_CallFrame_objc(framePtr) = objc; Tcl_CallFrame_objv(framePtr) = objv; Tcl_CallFrame_procPtr(framePtr) = procPtr; #if defined(NRE) /*fprintf(stderr, "CALL TclNRInterpProcCore proc '%s' %s nameObj %p %s\n", ObjStr(objv[0]), fullMethodName, procNameObj, ObjStr(procNameObj));*/ Tcl_NRAddCallback(interp, ProcDispatchFinalize, (ClientData)fullMethodName, pcPtr, # if defined(NSF_PROFILE) (ClientData)(unsigned long)trt.tv_usec, (ClientData)(unsigned long)trt.tv_sec # else NULL, NULL # endif ); result = TclNRInterpProcCore(interp, procNameObj, 1, &MakeProcError); #else { ClientData data[4] = { (ClientData)fullMethodName, pcPtr, # if defined(NSF_PROFILE) (ClientData)(unsigned long)trt.tv_usec, (ClientData)(unsigned long)trt.tv_sec # else NULL, NULL # endif }; result = TclObjInterpProcCore(interp, procNameObj, 1, &MakeProcError); result = ProcDispatchFinalize(data, interp, result); } #endif return result; } /* *---------------------------------------------------------------------- * NsfProcStub -- * * Tcl_ObjCmdProc implementing Proc Stubs. This function processes * the argument list in accordance with the parameter definitions * and calls in case of success the shadowed proc. * * Results: * Tcl return code. * * Side effects: * None. * *---------------------------------------------------------------------- */ int NsfProcStub(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) { NsfProcClientData *tcd = clientData; int result; assert(tcd); /*fprintf(stderr, "NsfProcStub %s is called, tcd %p\n", ObjStr(objv[0]), tcd);*/ if (likely(tcd->paramDefs && tcd->paramDefs->paramsPtr)) { ParseContext *pcPtr = (ParseContext *) NsfTclStackAlloc(interp, sizeof(ParseContext), "parse context"); ALLOC_ON_STACK(Tcl_Obj*, objc, tov); /* * We have to substitute the first element of objv with the name * of the function to be called. Since objv is immutable, we have * to copy the full argument vector and replace the element on * position [0] */ memcpy(tov+1, objv+1, sizeof(Tcl_Obj *)*(objc-1)); tov[0] = tcd->procName; /* If the argument parsing is ok, the shadowed proc will be called */ result = ProcessMethodArguments(pcPtr, interp, NULL, NSF_ARGPARSE_FORCE_REQUIRED, tcd->paramDefs, objv[0], objc, tov); if (likely(result == TCL_OK)) { result = InvokeShadowedProc(interp, tcd->procName, tcd->cmd, pcPtr); } else { /*Tcl_Obj *resultObj = Tcl_GetObjResult(interp); fprintf(stderr, "NsfProcStub: incorrect arguments (%s)\n", ObjStr(resultObj));*/ ParseContextRelease(pcPtr); NsfTclStackFree(interp, pcPtr, "release parse context"); } /*fprintf(stderr, "NsfProcStub free on stack %p\n", tov);*/ FREE_ON_STACK(Tcl_Obj *, tov); } else { fprintf(stderr, "no parameters\n"); assert(0); /* should never happen */ result = TCL_ERROR; } return result; } /* *---------------------------------------------------------------------- * NsfProcAdd -- * * Add a command for implementing a Tcl proc with next scripting * parameter handling. * * For the time being, this function adds two things, (a) a Tcl cmd * functioning as a stub for the argument processing (in accordance * with the parameter definitions) and (b) the shadowed Tcl proc * with a mutated name. * * TODO: the current 1 cmd + 1 proc implementation is not robust * against renaming and partial deletions (deletion of the * stub). * * Results: * Tcl return code. * * Side effects: * Adding one Tcl command and one Tcl proc * *---------------------------------------------------------------------- */ static int NsfProcAdd(Tcl_Interp *interp, NsfParsedParam *parsedParamPtr, CONST char *procName, Tcl_Obj *body, int with_ad) { NsfParamDefs *paramDefs = parsedParamPtr->paramDefs; Tcl_Namespace *cmdNsPtr; NsfProcClientData *tcd; Tcl_Obj *argList; Tcl_Obj *procNameObj; Tcl_DString ds, *dsPtr = &ds; Nsf_Param *paramPtr; Tcl_Obj *ov[4]; int result; Tcl_Command cmd; Tcl_DStringInit(dsPtr); /* * Create a fully qualified procName */ if (*procName != ':') { DStringAppendQualName(dsPtr, Tcl_GetCurrentNamespace(interp), procName); procName = Tcl_DStringValue(dsPtr); } /* * Create first the ProcStub to obtain later its namespace, which is * needed as the inner namespace of the shadowed proc. */ tcd = NEW(NsfProcClientData); cmd = Tcl_CreateObjCommand(interp, procName, NsfProcStub, tcd, NsfProcStubDeleteProc); if (unlikely(cmd == NULL)) { /* * For some reason, the command could not be created. Let us hope, * we have a useful error message. */ Tcl_DStringFree(dsPtr); FREE(NsfProcClientData, tcd); return TCL_ERROR; } cmdNsPtr = Tcl_Command_nsPtr(cmd); ParamDefsStore(cmd, paramDefs); /*fprintf(stderr, "NsfProcAdd procName '%s' define cmd '%s' %p in namespace %s\n", procName, Tcl_GetCommandName(interp, cmd), cmd, cmdNsPtr->fullName);*/ /* * Let us create the shadowed Tcl proc, which is stored under * ::nsf::procs::*. First build the fully qualified name * procNameObj. */ Tcl_DStringSetLength(dsPtr, 0); Tcl_DStringAppend(dsPtr, "::nsf::procs", -1); DStringAppendQualName(dsPtr, cmdNsPtr, Tcl_GetCommandName(interp, cmd)); procNameObj = Tcl_NewStringObj(Tcl_DStringValue(dsPtr), Tcl_DStringLength(dsPtr)); INCR_REF_COUNT2("procNameObj", procNameObj); /* will be freed, when NsfProcStub is deleted */ /* * Make sure to create the target namespace under "::nsf::procs::", if * it does not exist. */ { Namespace *nsPtr, *dummy1Ptr, *dummy2Ptr; const char *dummy; /* create the target namespace, if it does not exist */ TclGetNamespaceForQualName(interp, ObjStr(procNameObj), NULL, TCL_CREATE_NS_IF_UNKNOWN, &nsPtr, &dummy1Ptr, &dummy2Ptr, &dummy); } /* * Create the client data, which links the stub cmd with the proc. */ tcd->procName = procNameObj; tcd->paramDefs = paramDefs; tcd->with_ad = with_ad; tcd->cmd = NULL; /*fprintf(stderr, "NsfProcAdd %s tcd %p paramdefs %p\n", ObjStr(procNameObj), tcd, tcd->paramDefs);*/ /* * Build an argument list for the shadowed proc. */ argList = Tcl_NewListObj(0, NULL); INCR_REF_COUNT(argList); for (paramPtr = paramDefs->paramsPtr; paramPtr->name; paramPtr++) { if (*paramPtr->name == '-') { Tcl_Obj *varNameObj = Tcl_NewStringObj(paramPtr->name+1, -1); /* * If we have the -ad (for ars digita) flag set, we provide the * OpenACS semantics. This is (a) to use the name "boolean" for * a switch and (b) to name the automatic variable with the * prefix "_p". */ if (with_ad && paramPtr->converter == Nsf_ConvertToBoolean && paramPtr->nrArgs == 1) { /*fprintf(stderr, "... ad handling: proc %s param %s type %s nrargs %d default %p\n", procName, paramPtr->name, paramPtr->type, paramPtr->nrArgs, paramPtr->defaultValue);*/ paramPtr->nrArgs = 0; /*paramPtr->converter = Nsf_ConvertToSwitch;*/ Tcl_AppendToObj(varNameObj, "_p", 2); if (paramPtr->defaultValue == NULL) { paramPtr->defaultValue = Tcl_NewBooleanObj(0); INCR_REF_COUNT(paramPtr->defaultValue); } } Tcl_ListObjAppendElement(interp, argList, varNameObj); } else { Tcl_ListObjAppendElement(interp, argList, Tcl_NewStringObj(paramPtr->name, -1)); } } ov[0] = NULL; ov[1] = procNameObj; ov[2] = argList; ov[3] = AddPrefixToBody(body, 1, parsedParamPtr); /*fprintf(stderr, "NsfProcAdd define proc %s arglist '%s'\n", ObjStr(ov[1]), ObjStr(ov[2])); */ result = Tcl_ProcObjCmd(0, interp, 4, ov); DECR_REF_COUNT(argList); DECR_REF_COUNT2("resultBody", ov[3]); if (result == TCL_OK) { /* * The shadowed proc was created successfully. Retrieve the * defined proc and set its namespace to the namespace of the stub * cmd */ Tcl_Command procCmd = Tcl_GetCommandFromObj(interp, procNameObj); assert(procCmd); ((Command *)procCmd)->nsPtr = (Namespace *)cmdNsPtr; tcd->cmd = procCmd; NsfCommandPreserve(tcd->cmd); } else { /* * We could not define the shadowed proc. In this case, cleanup by * removing the stub cmd. */ Tcl_DeleteCommandFromToken(interp, cmd); } Tcl_DStringFree(dsPtr); return result; } static int ProcessMethodArguments(ParseContext *pcPtr, Tcl_Interp *interp, NsfObject *object, int processFlags, NsfParamDefs *paramDefs, Tcl_Obj *methodNameObj, int objc, Tcl_Obj *CONST objv[]) { int result; CallFrame frame, *framePtr = &frame; if (object && (processFlags & NSF_ARGPARSE_METHOD_PUSH)) { Nsf_PushFrameObj(interp, object, framePtr); } result = ArgumentParse(interp, objc, objv, object, methodNameObj, paramDefs->paramsPtr, paramDefs->nrParams, paramDefs->serial, processFlags|RUNTIME_STATE(interp)->doCheckArguments, pcPtr); #if 0 { int i; fprintf(stderr, "after ArgumentParse %s\n", ObjStr(methodNameObj)); for (i = 0; i < pcPtr->objc-1; i++) { fprintf(stderr, "... pcPtr %p [%d] obj %p refCount %d (%s) flags %.6x & %p\n", pcPtr, i, pcPtr->objv[i], pcPtr->objv[i]->refCount, ObjStr(pcPtr->objv[i]), pcPtr->flags[i], &(pcPtr->flags[i])); } } #endif if (object && (processFlags & NSF_ARGPARSE_METHOD_PUSH)) { Nsf_PopFrameObj(interp, framePtr); } /* * Set objc of the parse context to the number of defined parameters. * pcPtr->objc and paramDefs->nrParams will be equivalent in cases * where argument values are passed to the call in absence of var * args ('args'). Treating "args is more involved (see below). */ if (result != TCL_OK) { return result; } if (pcPtr->varArgs) { /* * The last argument was "args". */ int elts = objc - pcPtr->lastObjc; if (elts == 0) { /* * No arguments were passed to "args". We simply decrement objc. */ pcPtr->objc--; } else if (elts > 1) { /* * Multiple arguments were passed to "args". pcPtr->objv is * pointing to the first of the var args. We have to copy the * remaining actual argument vector objv to the parse context. */ /*NsfPrintObjv("actual: ", objc, objv);*/ ParseContextExtendObjv(pcPtr, paramDefs->nrParams, elts-1, objv + 1 + pcPtr->lastObjc); } else { /* * A single argument was passed to "args". There is no need to * mutate the pcPtr->objv, because this has been achieved in * ArgumentParse (i.e., pcPtr->objv[i] contains this element). */ } } return TCL_OK; } /************************************************************************** * End Definition of nsf::proc (Tcl Procs with Parameter handling) **************************************************************************/ /* *---------------------------------------------------------------------- * ForwardCmdDeleteProc -- * * This Tcl_CmdDeleteProc is called, when a forward method is deleted * * Results: * None. * * Side effects: * Frees client data of the setter command. * *---------------------------------------------------------------------- */ static void ForwardCmdDeleteProc(ClientData clientData) { ForwardCmdClientData *tcd = (ForwardCmdClientData *)clientData; if (tcd->cmdName) {DECR_REF_COUNT(tcd->cmdName);} if (tcd->subcommands) {DECR_REF_COUNT(tcd->subcommands);} if (tcd->onerror) {DECR_REF_COUNT(tcd->onerror);} if (tcd->prefix) {DECR_REF_COUNT(tcd->prefix);} if (tcd->args) {DECR_REF_COUNT(tcd->args);} FREE(ForwardCmdClientData, tcd); } /* *---------------------------------------------------------------------- * SetterCmdDeleteProc -- * * This Tcl_CmdDeleteProc is called, when a setter method is deleted * * Results: * None. * * Side effects: * Frees client data of the setter command. * *---------------------------------------------------------------------- */ static void SetterCmdDeleteProc(ClientData clientData) { SetterCmdClientData *setterClientData = (SetterCmdClientData *)clientData; if (setterClientData->paramsPtr) { ParamsFree(setterClientData->paramsPtr); } FREE(SetterCmdClientData, setterClientData); } /* *---------------------------------------------------------------------- * AliasCmdDeleteProc -- * * This Tcl_CmdDeleteProc is called, when an alias method is deleted * * Results: * None. * * Side effects: * Frees client data of the setter command. * *---------------------------------------------------------------------- */ static void AliasCmdDeleteProc(ClientData clientData) { AliasCmdClientData *tcd = (AliasCmdClientData *)clientData; /* * Since we just get the clientData, we have to obtain interp, * object, methodName and per-object from tcd; the obj might be * deleted already. We need as well at least still the global * namespace. */ if (tcd->interp && ((Interp *)(tcd->interp))->globalNsPtr && RUNTIME_STATE(tcd->interp)->exitHandlerDestroyRound != NSF_EXITHANDLER_ON_PHYSICAL_DESTROY) { CONST char *methodName = Tcl_GetCommandName(tcd->interp, tcd->aliasCmd); AliasDelete(tcd->interp, tcd->cmdName, methodName, tcd->class == NULL); } /*fprintf(stderr, "AliasCmdDeleteProc aliasedCmd %p\n", tcd->aliasedCmd);*/ if (tcd->cmdName) {DECR_REF_COUNT(tcd->cmdName);} if (tcd->aliasedCmd) { #if defined(WITH_IMPORT_REFS) ImportRef *refPtr, *prevPtr = NULL; Command *aliasedCmd = (Command *)(tcd->aliasedCmd); /*fprintf(stderr, "AliasCmdDeleteProc aliasedCmd %p epoch %d refCount %d\n", aliasedCmd, Tcl_Command_cmdEpoch(tcd->aliasedCmd), aliasedCmd->refCount);*/ /* * Clear the aliasCmd from the imported-ref chain of the aliased * (or real) cmd. This widely resembles what happens in the * DeleteImportedCmd() (see tclNamesp.c), however, as we do not * provide for ImportedCmdData client data etc., we cannot * directly use it. */ for (refPtr = aliasedCmd->importRefPtr; refPtr; refPtr = refPtr->nextPtr) { if (refPtr->importedCmdPtr == (Command *) tcd->aliasCmd) { if (prevPtr == NULL) { aliasedCmd->importRefPtr = refPtr->nextPtr; } else { prevPtr->nextPtr = refPtr->nextPtr; } ckfree((char *) refPtr); break; } prevPtr = refPtr; } #endif NsfCommandRelease(tcd->aliasedCmd); } FREE(AliasCmdClientData, tcd); } /* *---------------------------------------------------------------------- * GetMatchObject -- * * Helper method used by nsfAPI.h and the info methods to check if the the * Tcl_Obj patternObj was provided and can be looked up. If this is the * case, wild card matching etc. does not have to be performed, but just * the properties of the object have to be tested. * * Results: * 0 or 1 or -1, potentially the matchObject (when 0 is returned) * 0: we have wild-card characters, iterate to get matches * 1: we have an existing object * -1: we no wild-card characters and a non-existing object * * Side effects: * None. * *---------------------------------------------------------------------- */ static int GetMatchObject(Tcl_Interp *interp, Tcl_Obj *patternObj, Tcl_Obj *origObj, NsfObject **matchObject, CONST char **pattern) { if (patternObj) { *pattern = ObjStr(patternObj); if (TclObjIsNsfObject(interp, patternObj, matchObject)) { return 1; } if (patternObj == origObj && **pattern != ':') { return -1; } } return 0; } /* *---------------------------------------------------------------------- * ForwardProcessOptions -- * * Process the options provided by the forward method and turn these into * the ForwardCmdClientData structure. * * Results: * Tcl result code. * * Side effects: * Allocated and initialized ForwardCmdClientData * *---------------------------------------------------------------------- */ static int ForwardProcessOptions(Tcl_Interp *interp, Tcl_Obj *nameObj, Tcl_Obj *withDefault, int withEarlybinding, Tcl_Obj *withMethodprefix, int withObjframe, Tcl_Obj *withOnerror, int withVerbose, Tcl_Obj *target, int objc, Tcl_Obj * CONST objv[], ForwardCmdClientData **tcdPtr) { ForwardCmdClientData *tcd; int i, result = 0; tcd = NEW(ForwardCmdClientData); memset(tcd, 0, sizeof(ForwardCmdClientData)); if (withDefault) { Tcl_DString ds, *dsPtr = &ds; DSTRING_INIT(dsPtr); Tcl_DStringAppend(dsPtr, "%1 {", 4); Tcl_DStringAppend(dsPtr, ObjStr(withDefault), -1); Tcl_DStringAppend(dsPtr, "}", 1); NsfDeprecatedCmd(interp, "forward option","-default ...", Tcl_DStringValue(dsPtr)); DSTRING_FREE(dsPtr); tcd->subcommands = withDefault; result = Tcl_ListObjLength(interp, withDefault, &tcd->nr_subcommands); INCR_REF_COUNT(tcd->subcommands); } if (withMethodprefix) { tcd->prefix = withMethodprefix; INCR_REF_COUNT(tcd->prefix); } if (withOnerror) { tcd->onerror = withOnerror; INCR_REF_COUNT(tcd->onerror); } tcd->objframe = withObjframe; tcd->verbose = withVerbose; tcd->needobjmap = 0; tcd->cmdName = target; /*fprintf(stderr, "...forwardprocess objc %d, cmdName %p %s\n", objc, target, ObjStr(target));*/ for (i=0; ineedobjmap |= (*element == '%' && *(element+1) == '@'); tcd->hasNonposArgs |= (*element == '%' && *(element+1) == '-'); if (tcd->args == NULL) { tcd->args = Tcl_NewListObj(1, &objv[i]); tcd->nr_args++; INCR_REF_COUNT(tcd->args); } else { Tcl_ListObjAppendElement(interp, tcd->args, objv[i]); tcd->nr_args++; } } if (!tcd->cmdName) { tcd->cmdName = nameObj; } /*fprintf(stderr, "+++ cmdName = %s, args = %s, # = %d\n", ObjStr(tcd->cmdName), tcd->args?ObjStr(tcd->args):"NULL", tcd->nr_args);*/ if (tcd->objframe) { /* * When we evaluating objscope, and define ... * o forward append -objframe append * a call to * o append ... * would lead to a recursive call; so we add the appropriate namespace. */ CONST char *nameString = ObjStr(tcd->cmdName); if (!isAbsolutePath(nameString)) { tcd->cmdName = NameInNamespaceObj(interp, nameString, CallingNameSpace(interp)); /*fprintf(stderr, "+++ name %s not absolute, therefore qualifying %s\n", nameString, ObjStr(tcd->cmdName));*/ } } INCR_REF_COUNT(tcd->cmdName); if (withEarlybinding) { Tcl_Command cmd = Tcl_GetCommandFromObj(interp, tcd->cmdName); if (cmd == NULL) { result = NsfPrintError(interp, "cannot lookup command '%s'", ObjStr(tcd->cmdName)); goto forward_process_options_exit; } if (CmdIsNsfObject(cmd) /* don't do direct invoke on nsf objects */ || Tcl_Command_objProc(cmd) == TclObjInterpProc /* don't do direct invoke on tcl procs */ ) { /* silently ignore earlybinding flag */ tcd->objProc = NULL; } else { tcd->objProc = Tcl_Command_objProc(cmd); tcd->clientData = Tcl_Command_objClientData(cmd); } } tcd->passthrough = !tcd->args && *(ObjStr(tcd->cmdName)) != '%' && tcd->objProc; forward_process_options_exit: /*fprintf(stderr, "forward args = %p, name = '%s'\n", tcd->args, ObjStr(tcd->cmdName));*/ if (likely(result == TCL_OK)) { *tcdPtr = tcd; } else { ForwardCmdDeleteProc(tcd); } return result; } /* *---------------------------------------------------------------------- * StripBodyPrefix -- * * Strip the prefix of the body, which might have been added by nsf. * * Results: * The string of the body without the prefix. * * Side effects: * None. * *---------------------------------------------------------------------- */ static CONST char * StripBodyPrefix(CONST char *body) { if (strncmp(body, "::nsf::__unset_unknown_args\n", 28) == 0) { body += 28; } return body; } /* *---------------------------------------------------------------------- * AddSlotObjects -- * * Compute the slot objects (children of the slot container) for a provided * object. The objects can be filtered via a pattern. * * Results: * The function appends results to the provide listObj * * Side effects: * Might add as well to the hash-table to avoid duplicates. * *---------------------------------------------------------------------- */ static void AddSlotObjects(Tcl_Interp *interp, NsfObject *parent, CONST char *prefix, Tcl_HashTable *slotTablePtr, int withSource, NsfClass *type, CONST char *pattern, Tcl_Obj *listObj) { NsfObject *slotContainerObject; Tcl_DString ds, *dsPtr = &ds; int fullQualPattern = (pattern && *pattern == ':' && *(pattern+1) == ':'); /*fprintf(stderr, "AddSlotObjects parent %s prefix %s type %p %s\n", ObjectName(parent), prefix, type, type ? ClassName(type) : "");*/ DSTRING_INIT(dsPtr); Tcl_DStringAppend(dsPtr, ObjectName(parent), -1); Tcl_DStringAppend(dsPtr, prefix, -1); slotContainerObject = GetObjectFromString(interp, Tcl_DStringValue(dsPtr)); if (slotContainerObject && slotContainerObject->nsPtr && (slotContainerObject->flags & NSF_IS_SLOT_CONTAINER)) { Tcl_HashSearch hSrch; Tcl_HashEntry *hPtr; Tcl_HashTable *cmdTablePtr = Tcl_Namespace_cmdTablePtr(slotContainerObject->nsPtr); Tcl_Command cmd; hPtr = Tcl_FirstHashEntry(cmdTablePtr, &hSrch); for (; hPtr; hPtr = Tcl_NextHashEntry(&hSrch)) { char *key = Tcl_GetHashKey(cmdTablePtr, hPtr); NsfObject *childObject; if (slotTablePtr) { int new; /* * Check, if we have and entry with this key already processed. We * never want to report shadowed entries. */ Tcl_CreateHashEntry(slotTablePtr, key, &new); if (!new) continue; } /* * Obtain the childObject */ cmd = (Tcl_Command) Tcl_GetHashValue(hPtr); childObject = NsfGetObjectFromCmdPtr(cmd); /* * Report just the already fully initialized slot objects, not the one * being right now created. */ if (!childObject || (childObject->flags & NSF_INIT_CALLED) == 0) { continue; } /* * Check the pattern. */ if (pattern) { int match; /* * If the pattern looks like fully qualified, we match against the * fully qualified name. */ if (fullQualPattern) { match = Tcl_StringMatch(ObjectName(childObject), pattern); } else { /* * do we have a mangled name of a private property/variable? */ if (*key == '_' && *(key+1) == '_' && *(key+2) == '_' && *(key+3) == '_') { Tcl_Obj *value = Nsf_ObjGetVar2((Nsf_Object *)childObject, interp, NsfGlobalObjs[NSF_SETTERNAME], NULL, 0); match = value ? Tcl_StringMatch(ObjStr(value), pattern) : 0; /*fprintf(stderr, "pattern <%s> fullQualPattern %d child %s key %s %p <%s> match %d\n", pattern, fullQualPattern, ObjectName(childObject), key, value, value ? ObjStr(value) : "", match);*/ } else { match = Tcl_StringMatch(key, pattern); } } if (!match) { continue; } } /* * Check, if the entry is from the right type */ if (type && !IsSubType(childObject->cl, type)) { continue; } /* * Add finally the entry to the returned list. */ Tcl_ListObjAppendElement(interp, listObj, childObject->cmdName); } } DSTRING_FREE(dsPtr); } static NsfClass * FindCalledClass(Tcl_Interp *interp, NsfObject *object) { NsfCallStackContent *cscPtr = CallStackGetTopFrame0(interp); CONST char *methodName; Tcl_Command cmd; if (cscPtr->frameType == NSF_CSC_TYPE_PLAIN) { return cscPtr->cl; } if (cscPtr->frameType == NSF_CSC_TYPE_ACTIVE_FILTER) { methodName = MethodName(cscPtr->filterStackEntry->calledProc); } else if (cscPtr->frameType == NSF_CSC_TYPE_ACTIVE_MIXIN && object->mixinStack) { methodName = (char *)Tcl_GetCommandName(interp, cscPtr->cmdPtr); } else { return NULL; } if (object->nsPtr) { cmd = FindMethod(object->nsPtr, methodName); if (cmd) { /* we called an object specific method */ return NULL; } } return SearchCMethod(object->cl, methodName, &cmd); } /* * Next Primitive Handling */ NSF_INLINE static int NextSearchMethod(NsfObject *object, Tcl_Interp *interp, NsfCallStackContent *cscPtr, NsfClass **clPtr, CONST char **methodNamePtr, Tcl_Command *cmdPtr, int *isMixinEntry, int *isFilterEntry, int *endOfFilterChain, Tcl_Command *currentCmdPtr) { int endOfChain = 0, objflags; /*fprintf(stderr, "NextSearchMethod for %s called with cl %p\n", *methodNamePtr, *clPtr);*/ /* * Next in filters */ objflags = object->flags; /* avoid stalling */ if (!(objflags & NSF_MIXIN_ORDER_VALID)) { MixinComputeDefined(interp, object); objflags = object->flags; /* avoid stalling */ } if ((objflags & NSF_FILTER_ORDER_VALID) && object->filterStack && object->filterStack->currentCmdPtr) { *cmdPtr = FilterSearchProc(interp, object, currentCmdPtr, clPtr); /*fprintf(stderr, "FilterSearchProc returned cmd %p\n", *cmdPtr); NsfShowStack(interp);*/ if (*cmdPtr == NULL) { if (cscPtr->frameType == NSF_CSC_TYPE_ACTIVE_FILTER) { /* * Reset the information to the values of method, clPtr * to the values they had before calling the filters. */ *methodNamePtr = MethodName(object->filterStack->calledProc); endOfChain = 1; *endOfFilterChain = 1; *clPtr = NULL; /*fprintf(stderr, "EndOfChain resetting cl\n");*/ } } else { *methodNamePtr = (char *) Tcl_GetCommandName(interp, *cmdPtr); *endOfFilterChain = 0; *isFilterEntry = 1; return TCL_OK; } } /* * Next in Mixins requires that we have already a mixinStack, and the * current frame is not a plain frame. */ assert(objflags & NSF_MIXIN_ORDER_VALID); if (object->mixinStack && cscPtr->frameType) { int result = MixinSearchProc(interp, object, *methodNamePtr, NULL, clPtr, currentCmdPtr, cmdPtr); /* fprintf(stderr, "next in mixins %s frameType %.6x\n", *methodNamePtr, cscPtr->frameType); */ if (unlikely(result != TCL_OK)) { return result; } if (*cmdPtr == NULL) { if (cscPtr->frameType == NSF_CSC_TYPE_ACTIVE_MIXIN) { endOfChain = 1; *clPtr = NULL; } } else { *isMixinEntry = 1; return TCL_OK; } } /*fprintf(stderr, "nextsearch: object %s nsPtr %p endOfChain %d\n", ObjectName(object), object->nsPtr, endOfChain);*/ /* * Otherwise: normal method dispatch * * If we are already in the precedence ordering, then advance * past our last point; otherwise (if clPtr==NULL) begin from the start. * * When a mixin or filter chain reached its end, we have to check for * fully qualified method names and search the obj-specific methods as well. */ if (endOfChain) { if (**methodNamePtr == ':') { *cmdPtr = Tcl_FindCommand(interp, *methodNamePtr, NULL, TCL_GLOBAL_ONLY); /* fprintf(stderr, "NEXT found absolute cmd %s => %p\n", *methodNamePtr, *cmdPtr); */ } else if (object->nsPtr) { *cmdPtr = FindMethod(object->nsPtr, *methodNamePtr); if (*cmdPtr && (Tcl_Command_flags(*cmdPtr) & NSF_CMD_CALL_PRIVATE_METHOD)) { /*fprintf(stderr, "NEXT found private cmd %s => %p\n", *methodNamePtr, *cmdPtr);*/ *cmdPtr = NULL; } } else { *cmdPtr = NULL; } } else { *cmdPtr = NULL; } /*fprintf(stderr, "NEXT methodName %s *clPtr %p %s *cmd %p cscPtr->flags %.6x\n", *methodNamePtr, *clPtr, ClassName((*clPtr)), *cmdPtr, cscPtr->flags); */ if (!*cmdPtr) { NsfClasses *pl = TransitiveSuperClasses(object->cl); NsfClass *cl = *clPtr; if (cl) { /* * Skip until actual class */ for ( ; pl; pl = pl->nextPtr) { if (pl->cl == cl) { pl = pl->nextPtr; break; } } } /* * Search for a further class method. When we are called from an active * filter and the call had the -local flag set, then allow to call private methods. */ *clPtr = SearchPLMethod(pl, *methodNamePtr, cmdPtr, ((cscPtr->flags & NSF_CM_LOCAL_METHOD) && cscPtr->frameType == NSF_CSC_TYPE_ACTIVE_FILTER) ? 0 : NSF_CMD_CALL_PRIVATE_METHOD); } else { *clPtr = NULL; } return TCL_OK; } /* *---------------------------------------------------------------------- * NextGetArguments -- * * Obtain arguments for a method invoked via next either from the * argument vector or from the stack (call stack content or Tcl * stack). In case of ensemble calls the stack entries of the * ensemble invocation are used. The function returns the arguments * 4 to 8. * * Results: * Tcl return code * * Side effects: * none * *---------------------------------------------------------------------- */ static int NextGetArguments(Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], NsfCallStackContent **cscPtrPtr, CONST char **methodNamePtr, int *outObjc, Tcl_Obj ***outObjv, int *freeArgumentVector) { Tcl_Obj **nobjv; int nobjc, oc, inEnsemble; Tcl_CallFrame *framePtr; NsfCallStackContent *cscPtr = CallStackGetTopFrame(interp, &framePtr); /* always make sure, we only decrement when necessary */ *freeArgumentVector = 0; if (!cscPtr) { return NsfPrintError(interp, "next: can't find self"); } if (!cscPtr->cmdPtr) { return NsfPrintError(interp, "next: no executing proc"); } oc = Tcl_CallFrame_objc(framePtr); if ((cscPtr->frameType & NSF_CSC_TYPE_ENSEMBLE)) { /* * We are in an ensemble method. The next works here not on the * actual methodName + frame, but on the ensemble above it. We * locate the appropriate call-stack content and continue next on * that. */ cscPtr = CallStackFindEnsembleCsc(framePtr, &framePtr); assert(cscPtr); inEnsemble = 1; *methodNamePtr = ObjStr(cscPtr->objv[0]); } else { inEnsemble = 0; *methodNamePtr = Tcl_GetCommandName(interp, cscPtr->cmdPtr); } /*fprintf(stderr, "NextGetArguments oc %d objc %d inEnsemble %d objv %p\n", oc, objc, inEnsemble, cscPtr->objv); */ if (objc > -1) { int methodNameLength; /* * Arguments were provided. We have to construct an argument * vector with the first argument(s) as the method name. In an * ensemble, we have to insert the objs of the full ensemble name. */ if (inEnsemble) { methodNameLength = 1 + cscPtr->objc - oc; nobjc = objc + methodNameLength; nobjv = (Tcl_Obj **)ckalloc(sizeof(Tcl_Obj *) * nobjc); MEM_COUNT_ALLOC("nextArgumentVector", nobjv); /* * copy the ensemble path name */ memcpy((char *)nobjv, cscPtr->objv, sizeof(Tcl_Obj *) * methodNameLength); } else { methodNameLength = 1; nobjc = objc + methodNameLength; nobjv = (Tcl_Obj **)ckalloc(sizeof(Tcl_Obj *) * nobjc); MEM_COUNT_ALLOC("nextArgumentVector", nobjv); /* * copy the method name */ if (cscPtr->objv) { nobjv[0] = cscPtr->objv[0]; } else if (Tcl_CallFrame_objv(framePtr)) { nobjv[0] = Tcl_CallFrame_objv(framePtr)[0]; } } /* * copy the remaining argument vector */ memcpy(nobjv + methodNameLength, objv, sizeof(Tcl_Obj *) * objc); INCR_REF_COUNT(nobjv[0]); /* we seem to need this here */ *freeArgumentVector = 1; } else { /* * no arguments were provided */ if (cscPtr->objv) { nobjv = (Tcl_Obj **)cscPtr->objv; nobjc = cscPtr->objc; } else { nobjc = Tcl_CallFrame_objc(framePtr); nobjv = (Tcl_Obj **)Tcl_CallFrame_objv(framePtr); } } *cscPtrPtr = cscPtr; *outObjc = nobjc; *outObjv = nobjv; return TCL_OK; } /* *---------------------------------------------------------------------- * NextInvokeFinalize -- * * This finalize function is either called via NRE callback or * directly (from NextSearchAndInvoke). It resets after a successul * lookup and invocation the continuation context (filter flags etc) * and cleans up optionally the argument vector (inverse operation * of NextGetArguments). * * Results: * Tcl return code * * Side effects: * freeing memory * *---------------------------------------------------------------------- */ NSF_INLINE static int NextInvokeFinalize(ClientData data[], Tcl_Interp *interp, int result) { Tcl_Obj **nobjv = data[0]; NsfCallStackContent *cscPtr = data[1]; /*fprintf(stderr, "***** NextInvokeFinalize cscPtr %p flags %.6x is next %d result %d unk %d\n", cscPtr, cscPtr->flags, cscPtr->flags & NSF_CSC_CALL_IS_NEXT, result, RUNTIME_STATE(interp)->unknown);*/ if (cscPtr->flags & NSF_CSC_CALL_IS_NEXT) { /* fprintf(stderr, "..... it was a successful next\n"); */ cscPtr->flags &= ~NSF_CSC_CALL_IS_NEXT; if (cscPtr->frameType == NSF_CSC_TYPE_INACTIVE_FILTER) { cscPtr->frameType = NSF_CSC_TYPE_ACTIVE_FILTER; } else if (cscPtr->frameType == NSF_CSC_TYPE_INACTIVE_MIXIN) { cscPtr->frameType = NSF_CSC_TYPE_ACTIVE_MIXIN; } } if (nobjv) { DECR_REF_COUNT(nobjv[0]); MEM_COUNT_FREE("nextArgumentVector", nobjv); ckfree((char *)nobjv); } if (result == TCL_ERROR && RUNTIME_STATE(interp)->unknown) { /* fprintf(stderr, "don't report unknown error\n"); */ /* * Don't report "unknown" errors via next. */ result = TCL_OK; } return result; } /* *---------------------------------------------------------------------- * NextSearchAndInvoke -- * * The function is called with a final argument vector and searches for a * possibly shadowed method. If a target method is found, this dispatcher * function updates the continuation context (filter flags etc.), invokes * upon the target method, and performs a cleanup. * * Results: * Tcl return code * * Side effects: * The invoked method might produce side effects. Also, the interp's unknown * state may be modified. * *---------------------------------------------------------------------- */ static int NextSearchAndInvoke(Tcl_Interp *interp, CONST char *methodName, int objc, Tcl_Obj *CONST objv[], NsfCallStackContent *cscPtr, int freeArgumentVector) { Tcl_Command cmd = NULL, currentCmd = NULL; int result, isMixinEntry = 0, isFilterEntry = 0, endOfFilterChain = 0; NsfRuntimeState *rst = RUNTIME_STATE(interp); NsfObject *object = cscPtr->self; NsfClass *cl; /* * Search the next method & compute its method data */ cl = cscPtr->cl; result = NextSearchMethod(object, interp, cscPtr, &cl, &methodName, &cmd, &isMixinEntry, &isFilterEntry, &endOfFilterChain, ¤tCmd); /*fprintf(stderr, "NEXT search on %s.%s cl %p cmd %p endOfFilterChain %d result %d IS OK %d\n", ObjectName(object), methodName, cl, cmd, endOfFilterChain, result, (result == TCL_OK));*/ if (unlikely(result != TCL_OK)) { goto next_search_and_invoke_cleanup; } #if 0 Tcl_ResetResult(interp); /* needed for bytecode support */ #endif if (cmd) { int frameType = NSF_CSC_TYPE_PLAIN; /* * change mixin state */ if (object->mixinStack) { if (cscPtr->frameType == NSF_CSC_TYPE_ACTIVE_MIXIN) { cscPtr->frameType = NSF_CSC_TYPE_INACTIVE_MIXIN; } /* otherwise move the command pointer forward */ if (isMixinEntry) { frameType = NSF_CSC_TYPE_ACTIVE_MIXIN; object->mixinStack->currentCmdPtr = currentCmd; } } /* * change filter state */ if (object->filterStack) { if (cscPtr->frameType == NSF_CSC_TYPE_ACTIVE_FILTER) { /*fprintf(stderr, "next changes filter state\n");*/ cscPtr->frameType = NSF_CSC_TYPE_INACTIVE_FILTER; } /* otherwise move the command pointer forward */ if (isFilterEntry) { /*fprintf(stderr, "next moves filter forward\n");*/ frameType = NSF_CSC_TYPE_ACTIVE_FILTER; object->filterStack->currentCmdPtr = currentCmd; } } /* * now actually call the "next" method */ cscPtr->flags |= NSF_CSC_CALL_IS_NEXT; rst->unknown = 0; #if defined(NRE) { int flags; /* * Allow call only without immediate flag, when caller has NRE without immediate */ flags = NsfImmediateFromCallerFlags(cscPtr->flags); /*fprintf(stderr, "MethodDispatch in next flags %.6x NRE %d immediate %d next-flags %.6x\n", cscPtr->flags, (cscPtr->flags & NSF_CSC_CALL_IS_NRE) != 0, (cscPtr->flags & NSF_CSC_IMMEDIATE) != 0, flags );*/ if (flags == 0) { /* * The call is NRE-enabled. We register the callback and return * here immediately. All other exists form this functions have * to call NextInvokeFinalize manually on return. */ Tcl_NRAddCallback(interp, NextInvokeFinalize, freeArgumentVector ? (ClientData)objv : NULL, cscPtr, NULL, NULL); return MethodDispatch(object, interp, objc, objv, cmd, object, cl, methodName, frameType, flags); } else { result = MethodDispatch(object, interp, objc, objv, cmd, object, cl, methodName, frameType, flags); } } #else result = MethodDispatch(object, interp, objc, objv, cmd, object, cl, methodName, frameType, 0); #endif } else if (result == TCL_OK) { NsfCallStackContent *topCscPtr; int isLeafNext; /* * We could not find a cmd, yet the dispatch attempt did not result * in an error. This means that we find ourselves in either of three * situations at this point: * * 1) A next cmd (NsfNextCmd()) at the end of a filter chain: Dispatch to * unknown as there is no implementation for the requested selector * available. 2) A next cmd from within a leaf sub-method (a "leaf next"): * Remain silent, do not dispatch to unknown. 3) MethodDispatchCsc() * realizes the actual "ensemble next": Dispatch to unknown, the * requested sub-selector is not resolvable to a cmd. * * For the cases 1) and 3), set the interp's unknown flag signaling to * higher levels (e.g., in MethodDispatchCsc(), in NsfNextCmd()) the need * for dispatching to unknown. */ topCscPtr = CallStackGetTopFrame(interp, NULL); assert(topCscPtr); /* case 2 */ isLeafNext = (cscPtr != topCscPtr) && (topCscPtr->frameType & NSF_CSC_TYPE_ENSEMBLE) && (topCscPtr->flags & NSF_CSC_CALL_IS_ENSEMBLE) == 0; rst->unknown = /* case 1 */ endOfFilterChain || /* case 3 */ (!isLeafNext && (cscPtr->flags & NSF_CSC_CALL_IS_ENSEMBLE)); /*fprintf(stderr, "******** setting unknown to %d\n", rst->unknown );*/ } next_search_and_invoke_cleanup: /* * We come here, whenever the NRE callback is NOT registered */ {ClientData data[2] = { freeArgumentVector ? (ClientData)objv : NULL, cscPtr }; return NextInvokeFinalize(data, interp, result); } } /* *---------------------------------------------------------------------- * NsfNextObjCmd -- * * nsf::xotclnext is for backwards compatibility to the next * implementation in XOTcl. It receives an argument vector which * is used for the invocation. if no argument vector is provided, * the argument vector of the last invocation is used. If the * argument vector starts with "--noArgs", then no arguments are * passed to the shadowed method. * * TODO: On the longer range, this function should go into an external * library (e.g. XOTcl compatibility library) * * Results: * Tcl return code * * Side effects: * The invoked method might produce side effects * *---------------------------------------------------------------------- */ static int NsfNextObjCmd(ClientData UNUSED(clientData), Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) { int freeArgumentVector, nobjc, result; NsfCallStackContent *cscPtr; CONST char *methodName; Tcl_Obj **nobjv; if (objc < 2) { /* No arguments were provided */ objc = 0; } else { /* in case --noArgs is used, remove the flag and provide an empty argument list */ CONST char *arg1String = ObjStr(objv[1]); if (*arg1String == '-' && !strcmp(arg1String, "--noArgs")) { objc = 1; } } result = NextGetArguments(interp, objc-1, &objv[1], &cscPtr, &methodName, &nobjc, &nobjv, &freeArgumentVector); if (likely(result == TCL_OK)) { result = NextSearchAndInvoke(interp, methodName, nobjc, nobjv, cscPtr, freeArgumentVector); } return result; } /* *---------------------------------------------------------------------- * FindSelfNext -- * * This function is called via [current nextmethod] to set the result of the * interp to the method which would be called by [next]. If there are more * shadowed methods along the precedence path, it sets the result of the * next method in form of a method handle. If there are no more shadowed * procs, the result is set to empty. * * Results: * Tcl return code * * Side effects: * Set Tcl result. * *---------------------------------------------------------------------- */ static int FindSelfNext(Tcl_Interp *interp) { NsfCallStackContent *cscPtr = CallStackGetTopFrame0(interp); Tcl_Command cmd = NULL, currentCmd = NULL; int result, isMixinEntry = 0, isFilterEntry = 0, endOfFilterChain = 0; NsfClass *cl = cscPtr->cl; NsfObject *object = cscPtr->self; CONST char *methodName; Tcl_ResetResult(interp); methodName = (char *)Tcl_GetCommandName(interp, cscPtr->cmdPtr); if (!methodName) { return TCL_OK; } result = NextSearchMethod(object, interp, cscPtr, &cl, &methodName, &cmd, &isMixinEntry, &isFilterEntry, &endOfFilterChain, ¤tCmd); if (cmd) { Tcl_SetObjResult(interp, MethodHandleObj(cl ? (NsfObject *)cl : object, cl == NULL, methodName)); } return result; } /* *---------------------------------------------------------------------- * ComputeLevelObj -- * * This function comptes a fresh Tcl_Obj referring to the interp level. The * caller has to care about freeing the returned Tcl_Obj. * * Results: * Tcl_Obj * * * Side effects: * Allocates a new Tcl_Obj * *---------------------------------------------------------------------- */ static Tcl_Obj * ComputeLevelObj(Tcl_Interp *interp, CallStackLevel level) { Tcl_CallFrame *framePtr; Tcl_Obj *resultObj; switch (level) { case CALLING_LEVEL: NsfCallStackFindLastInvocation(interp, 1, &framePtr); break; case ACTIVE_LEVEL: NsfCallStackFindActiveFrame(interp, 1, &framePtr); break; default: framePtr = NULL; /* silence compiler */ } if (framePtr) { /* the call was from an nsf frame, return absolute frame number */ char buffer[LONG_AS_STRING]; int l; buffer[0] = '#'; Nsf_ltoa(buffer+1, (long)Tcl_CallFrame_level(framePtr), &l); resultObj = Tcl_NewStringObj(buffer, l+1); } else { /* If not called from an nsf frame, return 1 as default */ resultObj = Tcl_NewIntObj(1); } return resultObj; } /* int NsfKObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) { if (objc < 2) return NsfPrintError(interp, "wrong # of args for K"); Tcl_SetObjResult(interp, objv[1]); return TCL_OK; } */ /* * object creation & destruction */ static int UnsetInAllNamespaces(Tcl_Interp *interp, Tcl_Namespace *nsPtr, CONST char *name) { int rc = 0; fprintf(stderr, "### UnsetInAllNamespaces variable '%s', current namespace '%s'\n", name, nsPtr ? nsPtr->fullName : "NULL"); if (nsPtr) { Tcl_HashSearch search; Tcl_HashEntry *entryPtr = Tcl_FirstHashEntry(Tcl_Namespace_childTablePtr(nsPtr), &search); Tcl_Var *varPtr; int result; varPtr = (Tcl_Var *) Tcl_FindNamespaceVar(interp, name, nsPtr, 0); /*fprintf(stderr, "found %s in %s -> %p\n", name, nsPtr->fullName, varPtr);*/ if (varPtr) { Tcl_DString dFullname, *dsPtr = &dFullname; Tcl_DStringInit(dsPtr); Tcl_DStringAppend(dsPtr, "unset ", -1); DStringAppendQualName(dsPtr, nsPtr, name); /*rc = Tcl_UnsetVar2(interp, Tcl_DStringValue(dsPtr), NULL, TCL_LEAVE_ERR_MSG);*/ result = Tcl_Eval(interp, Tcl_DStringValue(dsPtr)); /* fprintf(stderr, "fqName = '%s' unset => %d %d\n", Tcl_DStringValue(dsPtr), rc, TCL_OK);*/ if (result == TCL_OK) { rc = 1; } else { Tcl_Obj *resultObj = Tcl_GetObjResult(interp); fprintf(stderr, " err = '%s'\n", ObjStr(resultObj)); } Tcl_DStringFree(dsPtr); } while (rc == 0 && entryPtr) { Tcl_Namespace *childNsPtr = (Tcl_Namespace *) Tcl_GetHashValue(entryPtr); /*fprintf(stderr, "child = %s\n", childNsPtr->fullName);*/ entryPtr = Tcl_NextHashEntry(&search); rc |= UnsetInAllNamespaces(interp, childNsPtr, name); } } return rc; } static int FreeUnsetTraceVariable(Tcl_Interp *interp, NsfObject *object) { int result = TCL_OK; if (object->opt && object->opt->volatileVarName) { /* * Somebody destroys a volatile object manually while the vartrace is * still active. Destroying the object will be a problem in case the * variable is deleted later and fires the trace. So, we unset the * variable here which will cause a destroy via var trace, which in turn * clears the volatileVarName flag. */ /*fprintf(stderr, "### FreeUnsetTraceVariable %s\n", obj->opt->volatileVarName);*/ result = Tcl_UnsetVar2(interp, object->opt->volatileVarName, NULL, 0); if (result != TCL_OK) { int result = Tcl_UnsetVar2(interp, object->opt->volatileVarName, NULL, TCL_GLOBAL_ONLY); if (result != TCL_OK) { Tcl_Namespace *nsPtr = Tcl_GetCurrentNamespace(interp); if (UnsetInAllNamespaces(interp, nsPtr, object->opt->volatileVarName) == 0) { fprintf(stderr, "### don't know how to delete variable '%s' of volatile object\n", object->opt->volatileVarName); } } } if (result == TCL_OK) { /*fprintf(stderr, "### success unset\n");*/ } } return result; } static char * NsfUnsetTrace(ClientData clientData, Tcl_Interp *interp, CONST char *UNUSED(name), CONST char *UNUSED(name2), int flags) { Tcl_Obj *objPtr = (Tcl_Obj *)clientData; NsfObject *object; char *resultMsg = NULL; /*fprintf(stderr, "NsfUnsetTrace %s flags %.4x %.4x\n", name, flags, flags & TCL_INTERP_DESTROYED); **/ if ((flags & TCL_INTERP_DESTROYED) == 0) { if (GetObjectFromObj(interp, objPtr, &object) == TCL_OK) { Tcl_Obj *savedResultObj = Tcl_GetObjResult(interp); /* save the result */ INCR_REF_COUNT(savedResultObj); /* clear variable, destroy is called from trace */ if (object->opt && object->opt->volatileVarName) { object->opt->volatileVarName = NULL; } if (DispatchDestroyMethod(interp, object, 0) != TCL_OK) { resultMsg = "Destroy for volatile object failed"; } else { resultMsg = "No nsf Object passed"; } Tcl_SetObjResult(interp, savedResultObj); /* restore the result */ DECR_REF_COUNT(savedResultObj); } DECR_REF_COUNT(objPtr); } else { /*fprintf(stderr, "omitting destroy on %s %p\n", name);*/ } return resultMsg; } /* *---------------------------------------------------------------------- * CleanupDestroyObject -- * * Perform cleanup of object; after the function is executed, the object is * in the same fresh state as after initialization. * * Results: * None. * * Side effects: * Possibly freeing memory. * *---------------------------------------------------------------------- */ static void CleanupDestroyObject(Tcl_Interp *interp, NsfObject *object, int softrecreate) { /*fprintf(stderr, "CleanupDestroyObject obj %p softrecreate %d nsPtr %p\n", object, softrecreate, object->nsPtr);*/ /* * The object pointer is guaranteed to point to the same object, so it is * not sufficient for methodObj validation. Therefore, for objects * containing per-object methods, we increment the objectMethodEpoch. */ if (object->nsPtr) { NsfObjectMethodEpochIncr("CleanupDestroyObject"); } /* * Remove the instance, but not for ::Class/::Object */ if ((object->flags & NSF_IS_ROOT_CLASS) == 0 && (object->flags & NSF_IS_ROOT_META_CLASS) == 0 ) { if (!softrecreate) { RemoveInstance(object, object->cl); } } if (object->nsPtr) { NSCleanupNamespace(interp, object->nsPtr); NSDeleteChildren(interp, object->nsPtr); } if (object->varTablePtr) { TclDeleteVars(((Interp *)interp), object->varTablePtr); ckfree((char *)object->varTablePtr); /*FREE(obj->varTablePtr, obj->varTablePtr);*/ object->varTablePtr = 0; } if (object->opt) { NsfObjectOpt *opt = object->opt; #if defined(NSF_WITH_ASSERTIONS) AssertionRemoveStore(opt->assertions); opt->assertions = NULL; #endif #if defined(PER_OBJECT_PARAMETER_CACHING) if (object->opt->parsedParamPtr) { NsfParameterInvalidateObjectCacheCmd(interp, object); } #endif if (!softrecreate) { /* * Remove this object from all per object mixin lists and clear the * mixin list. */ RemoveFromObjectMixinsOf(object->id, opt->objMixins); CmdListFree(&opt->objMixins, GuardDel); CmdListFree(&opt->objFilters, GuardDel); FREE(NsfObjectOpt, opt); object->opt = 0; } } object->flags &= ~NSF_MIXIN_ORDER_VALID; if (object->mixinOrder) MixinResetOrder(object); object->flags &= ~NSF_FILTER_ORDER_VALID; if (object->filterOrder) FilterResetOrder(object); } /* * do obj initialization & namespace creation */ static void CleanupInitObject(Tcl_Interp *interp, NsfObject *object, NsfClass *cl, Tcl_Namespace *nsPtr, int softrecreate) { #ifdef OBJDELETION_TRACE fprintf(stderr, "+++ CleanupInitObject\n"); #endif object->teardown = interp; object->nsPtr = nsPtr; if (!softrecreate && cl) { AddInstance(object, cl); } if (object->flags & NSF_RECREATE) { object->opt = NULL; object->varTablePtr = NULL; object->mixinOrder = NULL; object->filterOrder = NULL; object->flags = 0; } /* fprintf(stderr, "cleanupInitObject %s: %p cl = %p\n", obj->cmdName ? ObjectName(object) : "", object, object->cl);*/ } static void PrimitiveDestroy(ClientData clientData) { if (NsfObjectIsClass((NsfObject *)clientData)) { PrimitiveCDestroy(clientData); } else { PrimitiveODestroy(clientData); } } static void TclDeletesObject(ClientData clientData) { NsfObject *object = (NsfObject *)clientData; Tcl_Interp *interp; /* * TODO: Actually, it seems like a good idea to flag a deletion from Tcl by * setting object->id to NULL. However, we seem to have some dependencies * avoiding this currently, so we use the flag. */ object->flags |= NSF_TCL_DELETE; /*fprintf(stderr, "cmd dealloc %p TclDeletesObject (%d)\n", object->id, Tcl_Command_refCount(object->id));*/ #ifdef OBJDELETION_TRACE fprintf(stderr, "TclDeletesObject %p obj->id %p flags %.6x\n", object, object->id, object->flags); #endif if ((object->flags & NSF_DURING_DELETE) || !object->teardown) return; interp = object->teardown; # ifdef OBJDELETION_TRACE fprintf(stderr, "... %p %s\n", object, ObjectName(object)); # endif CallStackDestroyObject(interp, object); /*fprintf(stderr, "TclDeletesObject %p DONE\n", object);*/ } /* * physical object destroy */ static void PrimitiveODestroy(ClientData clientData) { NsfObject *object = (NsfObject *)clientData; Tcl_Interp *interp; if (!object || !object->teardown) return; /*fprintf(stderr, "****** PrimitiveODestroy %p cmd %p flags %.6x\n", object, object->id, object->flags);*/ assert(!(object->flags & NSF_DELETED)); /* destroy must have been called already */ assert(object->flags & NSF_DESTROY_CALLED); /* * Check and latch against recurrent calls with object->teardown. */ PRINTOBJ("PrimitiveODestroy", object); interp = object->teardown; /* * Don't destroy, if the interpreter is destroyed already * e.g. TK calls Tcl_DeleteInterp directly, if the window is killed */ if (Tcl_InterpDeleted(interp)) return; #ifdef OBJDELETION_TRACE {Command *cmdPtr = object->id; fprintf(stderr, " physical delete of %p id=%p (cmd->refCount %d) destroyCalled=%d '%s'\n", object, object->id, cmdPtr->refCount, (object->flags & NSF_DESTROY_CALLED), ObjectName(object)); } #endif CleanupDestroyObject(interp, object, 0); while (object->mixinStack) { MixinStackPop(object); } while (object->filterStack) { FilterStackPop(object); } /* * Object is now mostly dead, but still allocated. However, since * Nsf_DeleteNamespace might delegate to the parent (e.g. slots) we clear * teardown after the deletion of the children. */ if (object->nsPtr) { /*fprintf(stderr, "PrimitiveODestroy calls deleteNamespace for object %p nsPtr %p\n", object, object->nsPtr);*/ Nsf_DeleteNamespace(interp, object->nsPtr); object->nsPtr = NULL; } object->teardown = NULL; /*fprintf(stderr, " +++ OBJ/CLS free: %p %s\n", object, ObjectName(object));*/ object->flags |= NSF_DELETED; ObjTrace("ODestroy", object); DECR_REF_COUNT(object->cmdName); NsfCleanupObject(object, "PrimitiveODestroy"); } /* *---------------------------------------------------------------------- * DoDealloc -- * * Perform deallocation of an object/class. This function is called * from the dealloc method and internally to get rid of an * abject. It cares about volatile and frees/triggers free * operation depending on the stack references. * * Results: * Tcl return code * * Side effects: * freed object or object is marked to be freed. * *---------------------------------------------------------------------- */ static int DoDealloc(Tcl_Interp *interp, NsfObject *object) { int result; /*fprintf(stderr, "DoDealloc obj= %s %p flags %.6x activation %d cmd %p opt=%p\n", ObjectName(object), object, object->flags, object->activationCount, object->id, object->opt);*/ result = FreeUnsetTraceVariable(interp, object); if (unlikely(result != TCL_OK)) { return result; } /* * Latch, and call delete command if not already in progress. */ if (RUNTIME_STATE(interp)->exitHandlerDestroyRound != NSF_EXITHANDLER_ON_SOFT_DESTROY) { CallStackDestroyObject(interp, object); } return TCL_OK; } /* * reset the object to a fresh, un-destroyed state */ static void MarkUndestroyed(NsfObject *object) { object->flags &= ~NSF_DESTROY_CALLED; } static void PrimitiveOInit(NsfObject *object, Tcl_Interp *interp, CONST char *name, Tcl_Namespace *nsPtr, NsfClass *cl) { #ifdef OBJDELETION_TRACE fprintf(stderr, "+++ PrimitiveOInit\n"); #endif #ifdef NSFOBJ_TRACE fprintf(stderr, "OINIT %s = %p\n", name, object); #endif NsfObjectRefCountIncr(object); MarkUndestroyed(object); /* * There might be already a namespace with name name; if this is the * case, use this namespace as object namespace. The preexisting * namespace might contain Next Scripting objects. If we would not use the * namespace as child namespace, we would not recognize the objects * as child objects, deletions of the object might lead to a crash. * * We can use here the provided nsPtr, except in cases, where this * namespaces is being destroyed (e.g. recreate a new object from a * different object system). */ if (nsPtr && (((Namespace *)nsPtr)->flags & NS_DYING)) { Namespace *dummy1Ptr, *dummy2Ptr, *nsPtr1 = (Namespace *)nsPtr; const char *dummy; TclGetNamespaceForQualName(interp, name, NULL, TCL_GLOBAL_ONLY|TCL_FIND_ONLY_NS, &nsPtr1, &dummy1Ptr, &dummy2Ptr, &dummy); nsPtr = (Tcl_Namespace *)nsPtr1; /*fprintf(stderr, "PrimitiveOInit %p calls TclGetNamespaceForQualName with %s => %p given %p object->nsPtr %p\n", object, name, nsPtr, nsPtr, object->nsPtr);*/ } if (nsPtr) { NsfNamespaceInit(nsPtr); } /* fprintf(stderr, "PrimitiveOInit %p %s, ns %p\n", object, name, nsPtr); */ CleanupInitObject(interp, object, cl, nsPtr, 0); /* TODO: would be nice, if we could init object flags */ /* object->flags = NSF_MIXIN_ORDER_VALID | NSF_FILTER_ORDER_VALID;*/ object->mixinStack = NULL; object->filterStack = NULL; } /* * Object creation: create object name (full name) and Tcl command */ static NsfObject * PrimitiveOCreate(Tcl_Interp *interp, Tcl_Obj *nameObj, Tcl_Namespace *parentNsPtr, NsfClass *cl) { NsfObject *object = (NsfObject *)ckalloc(sizeof(NsfObject)); CONST char *nameString = ObjStr(nameObj); Tcl_Namespace *nsPtr; /*fprintf(stderr, "PrimitiveOCreate %s parentNs %p\n", nameString, parentNsPtr);*/ #if defined(NSFOBJ_TRACE) fprintf(stderr, "CKALLOC Object %p %s\n", object, nameString); #endif #ifdef OBJDELETION_TRACE fprintf(stderr, "+++ PrimitiveOCreate\n"); #endif memset(object, 0, sizeof(NsfObject)); MEM_COUNT_ALLOC("NsfObject/NsfClass", object); assert(object); /* ckalloc panics, if malloc fails */ assert(isAbsolutePath(nameString)); nsPtr = NSCheckNamespace(interp, nameString, parentNsPtr); if (nsPtr) { NSNamespacePreserve(nsPtr); } #if defined(NRE) object->id = Tcl_NRCreateCommand(interp, nameString, NsfObjDispatch, NsfObjDispatchNRE, object, TclDeletesObject); #else object->id = Tcl_CreateObjCommand(interp, nameString, NsfObjDispatch, object, TclDeletesObject); #endif /*fprintf(stderr, "cmd alloc %p %d (%s)\n", object->id, Tcl_Command_refCount(object->id), nameString);*/ PrimitiveOInit(object, interp, nameString, nsPtr, cl); if (nsPtr) { NSNamespaceRelease(nsPtr); } object->cmdName = nameObj; /* convert cmdName to Tcl Obj of type cmdName */ /*Tcl_GetCommandFromObj(interp, obj->cmdName);*/ INCR_REF_COUNT(object->cmdName); ObjTrace("PrimitiveOCreate", object); return object; } /* *---------------------------------------------------------------------- * DefaultSuperClass -- * * Determine the default Superclass of the class (specified as * second argument) and meta class (third argument). The function * searches for the variable NSF_DEFAULTMETACLASS or * NSF_DEFAULTSUPERCLASS and uses it if present. * * Results: * Default superclass or NULL * * Side effects: * None. * *---------------------------------------------------------------------- */ static NsfClass * DefaultSuperClass(Tcl_Interp *interp, NsfClass *cl, NsfClass *mcl, int isMeta) { NsfClass *resultClass = NULL; /*fprintf(stderr, "DefaultSuperClass cl %s, mcl %s, isMeta %d\n", ClassName(cl), ClassName(mcl), isMeta );*/ if (mcl) { Tcl_Obj *resultObj = Nsf_ObjGetVar2((Nsf_Object *)mcl, interp, isMeta ? NsfGlobalObjs[NSF_DEFAULTMETACLASS] : NsfGlobalObjs[NSF_DEFAULTSUPERCLASS], NULL, 0); if (resultObj) { if (unlikely(GetClassFromObj(interp, resultObj, &resultClass, 0) != TCL_OK)) { NsfPrintError(interp, "default superclass is not a class"); } /* fprintf(stderr, "DefaultSuperClass for %s got from var %s\n", ClassName(cl), ObjStr(nameObj)); */ } else { NsfClasses *sc; /* fprintf(stderr, "DefaultSuperClass for %s: search in superclasses starting with %p meta %d\n", ClassName(cl), cl->super, isMeta); */ if (isMeta) { /* * Is this already the root metaclass ? */ if (mcl->object.cl->object.flags & NSF_IS_ROOT_META_CLASS) { return mcl->object.cl; } } /* * check superclasses of metaclass */ for (sc = mcl->super; sc && sc->cl != cl; sc = sc->nextPtr) { /* fprintf(stderr, " ... check ismeta %d %s root mcl %d root cl %d\n", isMeta, ClassName(sc->cl), sc->cl->object.flags & NSF_IS_ROOT_META_CLASS, sc->cl->object.flags & NSF_IS_ROOT_CLASS); */ if (isMeta) { if (sc->cl->object.flags & NSF_IS_ROOT_META_CLASS) { return sc->cl; } } else { if (sc->cl->object.flags & NSF_IS_ROOT_CLASS) { /* fprintf(stderr, "found root class %p %s\n", sc->cl, ClassName(sc->cl)); */ return sc->cl; } } resultClass = DefaultSuperClass(interp, cl, sc->cl, isMeta); if (resultClass) { break; } } } } else { /* * During bootstrapping, there might be no meta class defined yet */ /* fprintf(stderr, "no meta class ismeta %d %s root mcl %d root cl %d\n", isMeta, ClassName(cl), cl->object.flags & NSF_IS_ROOT_META_CLASS, cl->object.flags & NSF_IS_ROOT_CLASS); */ } return resultClass; } /* */ /* *---------------------------------------------------------------------- * CleanupDestroyClass -- * * Cleanup class in a destroy call. Remove filters, mixins, assertions, * instances and remove finally class from class hierarchy. In the recreate * case, it preserves the pointers from other class structures. * * Results: * None. * * Side effects: * Updated class structures. * *---------------------------------------------------------------------- */ static void CleanupDestroyClass(Tcl_Interp *interp, NsfClass *cl, int softrecreate, int recreate) { NsfClassOpt *clopt = cl->opt; NsfClass *baseClass = NULL; NsfClasses *subClasses; PRINTOBJ("CleanupDestroyClass", (NsfObject *)cl); assert(softrecreate ? recreate == 1 : 1); /*fprintf(stderr, "CleanupDestroyClass %p %s (ismeta=%d) softrecreate=%d, recreate=%d, %p\n", cl, ClassName(cl), IsMetaClass(interp, cl, 1), softrecreate, recreate, clopt);*/ subClasses = TransitiveSubClasses(cl); /* * Perform the next steps even with clopt == NULL, since the class * might be used as a superclass of a per object mixin, so it might * have no clopt... */ MixinInvalidateObjOrders(interp, cl, subClasses); if (FiltersDefined(interp) > 0) { FilterInvalidateObjOrders(interp, cl, subClasses); } if (clopt) { /* * Remove this class from all isClassMixinOf lists and clear the * class mixin list */ RemoveFromClassMixinsOf(clopt->id, clopt->classMixins); CmdListFree(&clopt->classMixins, GuardDel); CmdListFree(&clopt->classFilters, GuardDel); if (!recreate) { /* * Remove this class from all mixin lists and clear the isObjectMixinOf list */ RemoveFromObjectMixins(clopt->id, clopt->isObjectMixinOf); CmdListFree(&clopt->isObjectMixinOf, GuardDel); /* * Remove this class from all class mixin lists and clear the * isClassMixinOf list */ RemoveFromClassmixins(clopt->id, clopt->isClassMixinOf); CmdListFree(&clopt->isClassMixinOf, GuardDel); } /* * Remove dependent filters of this class from all subclasses */ FilterRemoveDependentFilterCmds(cl, cl, subClasses); #if defined(NSF_WITH_ASSERTIONS) AssertionRemoveStore(clopt->assertions); clopt->assertions = NULL; #endif #ifdef NSF_OBJECTDATA NsfFreeObjectData(cl); #endif } NSCleanupNamespace(interp, cl->nsPtr); NSDeleteChildren(interp, cl->nsPtr); if (!softrecreate) { /* * Reclass all instances of the current class the the appropriate * most general class ("baseClass"). The most general class of a * metaclass is the root meta class, the most general class of an * object is the root class. Instances of meta-classes can be only * reset to the root meta class (and not to to the root base * class). */ baseClass = DefaultSuperClass(interp, cl, cl->object.cl, IsMetaClass(interp, cl, 1)); /* * We do not have to reclassing in case, cl is a root class */ if ((cl->object.flags & NSF_IS_ROOT_CLASS) == 0) { Tcl_HashTable *instanceTablePtr = &cl->instances; Tcl_HashSearch hSrch; Tcl_HashEntry *hPtr; for (hPtr = Tcl_FirstHashEntry(instanceTablePtr, &hSrch); hPtr; hPtr = Tcl_NextHashEntry(&hSrch)) { NsfObject *inst = (NsfObject *)Tcl_GetHashKey(instanceTablePtr, hPtr); /*fprintf(stderr, " inst %p %s flags %.6x id %p baseClass %p %s\n", inst, ObjectName(inst), inst->flags, inst->id, baseClass, ClassName(baseClass));*/ if (inst && inst != (NsfObject *)cl && !(inst->flags & NSF_DURING_DELETE) /*inst->id*/) { if (inst != &(baseClass->object)) { AddInstance(inst, baseClass); } } } } Tcl_DeleteHashTable(&cl->instances); MEM_COUNT_FREE("Tcl_InitHashTable", &cl->instances); } if ((clopt) && (!recreate)) { FREE(NsfClassOpt, clopt); cl->opt = 0; } /* * On a recreate, it might be possible that the newly created class * has a different superclass. So we have to flush the precedence * list on a recreate as well. */ FlushPrecedences(subClasses); NsfClassListFree(subClasses); while (cl->super) { (void)RemoveSuper(cl, cl->super->cl); } if (!softrecreate) { /* * flush all caches, unlink superclasses */ while (cl->sub) { NsfClass *subClass = cl->sub->cl; (void)RemoveSuper(subClass, cl); /* * If there are no more super classes add the Object * class as superclasses * -> don't do that for Object itself! */ if (subClass->super == 0 && (cl->object.flags & NSF_IS_ROOT_CLASS) == 0) { /* fprintf(stderr,"subClass %p %s baseClass %p %s\n", cl, ClassName(cl), baseClass, ClassName(baseClass)); */ AddSuper(subClass, baseClass); } } /*(void)RemoveSuper(cl, cl->super->cl);*/ } } /* *---------------------------------------------------------------------- * CleanupInitClass -- * * Basic initialization of a class, setting namespace, super- and * sub-classes, and setup optionally instances table. * * Results: * None. * * Side effects: * Makes a class structure useable. * *---------------------------------------------------------------------- */ static void CleanupInitClass(Tcl_Interp *interp, NsfClass *cl, Tcl_Namespace *nsPtr, int softrecreate, int recreate) { NsfClass *defaultSuperclass; assert(softrecreate ? recreate == 1 : 1); #ifdef OBJDELETION_TRACE fprintf(stderr, "+++ CleanupInitClass\n"); #endif /* * Record, that cl is a class and set its namespace */ NsfObjectSetClass((NsfObject *)cl); cl->nsPtr = nsPtr; if (!softrecreate) { /* * Subclasses are preserved during recreate, superclasses not (since the * creation statement defined the superclass, might be different the * second time) */ cl->sub = NULL; } cl->super = NULL; /* Look for a configured default superclass */ defaultSuperclass = DefaultSuperClass(interp, cl, cl->object.cl, 0); if (cl != defaultSuperclass) { AddSuper(cl, defaultSuperclass); } cl->color = WHITE; cl->order = NULL; if (!softrecreate) { Tcl_InitHashTable(&cl->instances, TCL_ONE_WORD_KEYS); MEM_COUNT_ALLOC("Tcl_InitHashTable", &cl->instances); } if (!recreate) { cl->opt = NULL; } } /* * Class physical destruction */ static void PrimitiveCDestroy(ClientData clientData) { NsfClass *cl = (NsfClass *)clientData; NsfObject *object = (NsfObject *)clientData; Tcl_Interp *interp; Tcl_Namespace *saved; PRINTOBJ("PrimitiveCDestroy", object); /* * check and latch against recurrent calls with obj->teardown */ if (!object || !object->teardown) return; interp = object->teardown; /* * Don't destroy, if the interpreted is destroyed already * e.g. TK calls Tcl_DeleteInterp directly, if Window is killed */ if (Tcl_InterpDeleted(interp)) return; /* * call and latch user destroy with object->id if we haven't */ /*fprintf(stderr, "PrimitiveCDestroy %s flags %.6x\n", ObjectName(object), object->flags);*/ object->teardown = NULL; CleanupDestroyClass(interp, cl, 0, 0); /* * handoff the primitive teardown */ saved = cl->nsPtr; object->teardown = interp; /* * class object destroy + physical destroy */ PrimitiveODestroy(clientData); /*fprintf(stderr, "primitive cdestroy calls delete namespace for obj %p, nsPtr %p flags %.6x\n", cl, saved, ((Namespace *)saved)->flags);*/ Nsf_DeleteNamespace(interp, saved); /*fprintf(stderr, "primitive cdestroy %p DONE\n", cl);*/ return; } /* * class init */ static void PrimitiveCInit(NsfClass *cl, Tcl_Interp *interp, CONST char *name) { Tcl_CallFrame frame, *framePtr = &frame; Tcl_Namespace *nsPtr; /* * ensure that namespace is newly created during CleanupInitClass * ie. kill it, if it exists already */ if (Tcl_PushCallFrame(interp, (Tcl_CallFrame *)framePtr, RUNTIME_STATE(interp)->NsfClassesNS, 0) != TCL_OK) { return; } nsPtr = NSGetFreshNamespace(interp, &cl->object, name); Tcl_PopCallFrame(interp); CleanupInitClass(interp, cl, nsPtr, 0, 0); return; } /* * class create: creation of namespace + class full name * calls class object creation */ static NsfClass * PrimitiveCCreate(Tcl_Interp *interp, Tcl_Obj *nameObj, Tcl_Namespace *parentNsPtr, NsfClass *class) { NsfClass *cl = (NsfClass *)ckalloc(sizeof(NsfClass)); Tcl_Namespace *nsPtr; CONST char *nameString = ObjStr(nameObj); NsfObject *object = (NsfObject *)cl; /* fprintf(stderr, "PrimitiveCCreate %s parentNs %p\n", nameString, parentNsPtr); */ #if defined(NSFOBJ_TRACE) fprintf(stderr, "CKALLOC Class %p %s\n", cl, nameString); #endif memset(cl, 0, sizeof(NsfClass)); MEM_COUNT_ALLOC("NsfObject/NsfClass", cl); /* pass object system from meta class */ if (class) { cl->osPtr = class->osPtr; } assert(isAbsolutePath(nameString)); /* fprintf(stderr, "Class alloc %p '%s'\n", cl, nameString); */ nsPtr = NSCheckNamespace(interp, nameString, parentNsPtr); if (nsPtr) { NSNamespacePreserve(nsPtr); } #if defined(NRE) object->id = Tcl_NRCreateCommand(interp, nameString, NsfObjDispatch, NsfObjDispatchNRE, cl, TclDeletesObject); #else object->id = Tcl_CreateObjCommand(interp, nameString, NsfObjDispatch, cl, TclDeletesObject); #endif PrimitiveOInit(object, interp, nameString, nsPtr, class); if (nsPtr) { NSNamespaceRelease(nsPtr); } object->cmdName = nameObj; /* convert cmdName to Tcl Obj of type cmdName */ /* Tcl_GetCommandFromObj(interp, obj->cmdName);*/ INCR_REF_COUNT(object->cmdName); PrimitiveCInit(cl, interp, nameString+2); ObjTrace("PrimitiveCCreate", object); return cl; } /* *---------------------------------------------------------------------- * ChangeClass -- * * Change class of a Next Scripting object. This function takes * care that one tries not to change an object into a class or vice * versa. Changing meta-class to meta-class, or class to class, or * object to object is fine, but upgrading/downgrading is not * allowed * * Results: * Tcl return code * * Side effects: * changes class of object if possible and updates instance relation. * *---------------------------------------------------------------------- */ NSF_INLINE static int ChangeClass(Tcl_Interp *interp, NsfObject *object, NsfClass *cl) { assert(object); NsfInstanceMethodEpochIncr("ChangeClass"); /*fprintf(stderr, "changing %s to class %s ismeta %d\n", ObjectName(object), ClassName(cl), IsMetaClass(interp, cl, 1));*/ if (cl != object->cl) { if (IsMetaClass(interp, cl, 1)) { /* Do not allow upgrading from a class to a meta-class (in other words, don't make an object to a class). To allow this, it would be necessary to reallocate the base structures. */ if (!IsMetaClass(interp, object->cl, 1)) { return NsfPrintError(interp, "cannot turn object into a class"); } } else { /* The target class is not a meta class. */ /*fprintf(stderr, "target class %s not a meta class, am i a class %d\n", ClassName(cl), NsfObjectIsClass(object) );*/ if (NsfObjectIsClass(object)) { return NsfPrintError(interp, "cannot turn class into an object "); } } RemoveInstance(object, object->cl); AddInstance(object, cl); MixinComputeDefined(interp, object); FilterComputeDefined(interp, object); } return TCL_OK; } /* *---------------------------------------------------------------------- * DoObjInitialization -- * * Perform the object initialization: first call "configure" and the * constructor "init", if not called already from configure. The function * will make sure that the called methods do not change the result passed * into this function. * * Results: * Tcl return code * * Side effects: * Indirect effects by calling Tcl code * *---------------------------------------------------------------------- */ static int DoObjInitialization(Tcl_Interp *interp, NsfObject *object, int objc, Tcl_Obj *CONST objv[]) { Tcl_Obj *methodObj, *savedObjResult; int result; /* * Save the result we have so far to return it in case of success */ savedObjResult = Tcl_GetObjResult(interp); INCR_REF_COUNT(savedObjResult); /* * clear INIT_CALLED flag */ object->flags &= ~NSF_INIT_CALLED; /* * Make sure, the object survives initialization; the cmd/initcmd might * destroy it. */ NsfObjectRefCountIncr(object); /* * Call configure method */ if (CallDirectly(interp, object, NSF_o_configure_idx, &methodObj)) { ALLOC_ON_STACK(Tcl_Obj*, objc, tov); memcpy(tov+1, objv+2, sizeof(Tcl_Obj *)*(objc-2)); /* the provided name of the method is just for error reporting */ tov[0] = methodObj ? methodObj : NsfGlobalObjs[NSF_CONFIGURE]; result = NsfOConfigureMethod(interp, object, objc-1, tov); FREE_ON_STACK(Tcl_Obj*, tov); } else { result = CallMethod(object, interp, methodObj, objc, objv+2, NSF_CSC_IMMEDIATE); } if (likely(result == TCL_OK)) { /* * Call constructor when needed */ if (!(object->flags & (NSF_INIT_CALLED|NSF_DESTROY_CALLED))) { result = DispatchInitMethod(interp, object, 0, NULL, 0); } if (likely(result == TCL_OK)) { Tcl_SetObjResult(interp, savedObjResult); } } else { /* * Configure failed and might have left the object in a bogus state. To * avoid strange errors, we delete the half-baked object. */ Tcl_Obj *errObj; /* * Preserve the outer error message, calls triggered by * DispatchDestroyMethod() can cause the interp result to be reset */ errObj = Tcl_GetObjResult(interp); INCR_REF_COUNT(errObj); DispatchDestroyMethod(interp, (NsfObject *)object, 0); Tcl_SetObjResult(interp, errObj); DECR_REF_COUNT(errObj); } NsfCleanupObject(object, "obj init"); DECR_REF_COUNT(savedObjResult); return result; } static int HasMetaProperty(NsfClass *cl) { return cl->object.flags & NSF_IS_ROOT_META_CLASS; } static int IsBaseClass(NsfObject *object) { return object->flags & (NSF_IS_ROOT_META_CLASS|NSF_IS_ROOT_CLASS); } static int IsMetaClass(Tcl_Interp *interp, NsfClass *cl, int withMixins) { /* check if class is a meta-class */ NsfClasses *pl; /* is the class the most general meta-class? */ if (HasMetaProperty(cl)) { return 1; } /* is the class a subclass of a meta-class? */ for (pl = TransitiveSuperClasses(cl); pl; pl = pl->nextPtr) { if (HasMetaProperty(pl->cl)) { return 1; } } if (withMixins) { NsfClasses *checkList = NULL, *mixinClasses = NULL, *mc; int hasMCM = 0; /* has the class metaclass mixed in? */ NsfClassListAddPerClassMixins(interp, cl, &mixinClasses, &checkList); for (mc = mixinClasses; mc; mc = mc->nextPtr) { if (IsMetaClass(interp, mc->cl, 0)) { hasMCM = 1; break; } } NsfClassListFree(mixinClasses); NsfClassListFree(checkList); /*fprintf(stderr, "has MC returns %d, mixinClasses = %p\n", hasMCM, mixinClasses);*/ return hasMCM; } else { return 0; } } static int IsSubType(NsfClass *subcl, NsfClass *cl) { assert(cl && subcl); if (cl != subcl) { return NsfClassListFind(TransitiveSuperClasses(subcl), cl) != NULL; } return 1; } static int HasMixin(Tcl_Interp *interp, NsfObject *object, NsfClass *cl) { if (!(object->flags & NSF_MIXIN_ORDER_VALID)) { MixinComputeDefined(interp, object); } if ((object->flags & NSF_MIXIN_ORDER_DEFINED_AND_VALID)) { NsfCmdList *ml; for (ml = object->mixinOrder; ml; ml = ml->nextPtr) { NsfClass *mixin = NsfGetClassFromCmdPtr(ml->cmdPtr); if (mixin == cl) { return 1; } } } return 0; } static int GetInstVarIntoCurrentScope(Tcl_Interp *interp, const char *cmdName, NsfObject *object, Tcl_Obj *varName, Tcl_Obj *newName) { Var *otherPtr = NULL, *arrayPtr; int flogs = TCL_LEAVE_ERR_MSG; Tcl_CallFrame *varFramePtr; CallFrame frame, *framePtr = &frame; char *varNameString; if (CheckVarName(interp, ObjStr(varName)) != TCL_OK) { return TCL_ERROR; } Nsf_PushFrameObj(interp, object, framePtr); if (object->nsPtr) { flogs = flogs|TCL_NAMESPACE_ONLY; } otherPtr = TclObjLookupVar(interp, varName, NULL, flogs, "define", /*createPart1*/ 1, /*createPart2*/ 1, &arrayPtr); Nsf_PopFrameObj(interp, framePtr); if (unlikely(otherPtr == NULL)) { return NsfPrintError(interp, "can't import variable %s into method scope: " "can't find variable on %s", ObjStr(varName), ObjectName(object)); } /* * if newName == NULL -> there is no alias, use varName * as target link name */ if (newName == NULL) { /* * Variable link into namespace cannot be an element in an array. * see Tcl_VariableObjCmd ... */ if (arrayPtr) { return NsfPrintError(interp, "can't make instance variable %s on %s: " "Variable cannot be an element in an array; use e.g. an alias.", ObjStr(varName), ObjectName(object)); } newName = varName; } varNameString = ObjStr(newName); varFramePtr = (Tcl_CallFrame *)Tcl_Interp_varFramePtr(interp); /* * If we are executing inside a Tcl procedure, create a local * variable linked to the new namespace variable "varName". */ if (varFramePtr && (Tcl_CallFrame_isProcCallFrame(varFramePtr) & FRAME_IS_PROC)) { Var *varPtr = (Var *)CompiledLocalsLookup((CallFrame *)varFramePtr, varNameString); int new = 0; if (varPtr == NULL) { /* * Look in frame's local var hash-table. */ TclVarHashTable *varTablePtr = Tcl_CallFrame_varTablePtr(varFramePtr); if (varTablePtr == NULL) { /* * The variable table does not exist. This seems to be is the * first access to a variable on this frame. We create the and * initialize the variable hash-table and update the object */ /*fprintf(stderr, "+++ create varTable in GetInstVarIntoCurrentScope\n");*/ Tcl_CallFrame_varTablePtr(varFramePtr) = varTablePtr = VarHashTableCreate(); } varPtr = VarHashCreateVar(varTablePtr, newName, &new); } /* * If we define an alias (newName != varName), be sure that * the target does not exist already. */ if (!new) { /*fprintf(stderr, "GetIntoScope create alias\n");*/ if (unlikely(varPtr == otherPtr)) { return NsfPrintError(interp, "can't instvar to variable itself"); } if (TclIsVarLink(varPtr)) { /* * We try to make the same instvar again ... this is ok */ Var *linkPtr = TclVarValue(Var, varPtr, linkPtr); if (linkPtr == otherPtr) { return TCL_OK; } /*fprintf(stderr, "linkvar flags=%x\n", linkPtr->flags); Tcl_Panic("new linkvar %s... When does this happen?", ObjStr(newName), NULL);*/ /* * We have already a variable with the same name imported * from a different object. Get rid of this old variable. */ VarHashRefCount(linkPtr)--; if (TclIsVarUndefined(linkPtr)) { TclCleanupVar(linkPtr, (Var *) NULL); } } else if (unlikely(TclIsVarUndefined(varPtr) == 0)) { return NsfPrintError(interp, "varName '%s' exists already", varNameString); } else if (unlikely(TclIsVarTraced(varPtr) != 0)) { return NsfPrintError(interp, "varName '%s' has traces: can't use for instvar", varNameString); } } TclSetVarLink(varPtr); TclClearVarUndefined(varPtr); varPtr->value.linkPtr = otherPtr; VarHashRefCount(otherPtr)++; /* fprintf(stderr, "defining an alias var='%s' in obj %s fwd %d flags %x isLink %d isTraced %d isUndefined %d\n", ObjStr(newName), ObjectName(object), 0, varPtr->flags, TclIsVarLink(varPtr), TclIsVarTraced(varPtr), TclIsVarUndefined(varPtr)); */ } else { return NsfPrintError(interp, "%s cannot import variable '%s' into method scope; " "not called from a method frame", cmdName, varNameString); } return TCL_OK; } /* * obj/cl ClientData setter/getter */ void NsfSetObjClientData(Tcl_Interp *interp, Nsf_Object *object1, ClientData data) { NsfObject *object = (NsfObject *) object1; NsfObjectOpt *opt = NsfRequireObjectOpt(object); opt->clientData = data; } ClientData NsfGetObjClientData(Tcl_Interp *interp, Nsf_Object *object1) { NsfObject *object = (NsfObject *) object1; return (object && object->opt) ? object->opt->clientData : NULL; } void NsfSetClassClientData(Tcl_Interp *interp, Nsf_Class *cli, ClientData data) { NsfClass *cl = (NsfClass *) cli; NsfRequireClassOpt(cl); cl->opt->clientData = data; } ClientData NsfGetClassClientData(Tcl_Interp *interp, Nsf_Class *cli) { NsfClass *cl = (NsfClass *) cli; return (cl && cl->opt) ? cl->opt->clientData : NULL; } /* *---------------------------------------------------------------------- * SetInstVar -- * * Set an instance variable of the specified object to the given value. * * Results: * Tcl result code. * * Side effects: * Set instance variable. * *---------------------------------------------------------------------- */ static int SetInstVar(Tcl_Interp *interp, NsfObject *object, Tcl_Obj *nameObj, Tcl_Obj *valueObj) { CallFrame frame, *framePtr = &frame; Tcl_Obj *resultObj; int flags; assert(object); flags = (object->nsPtr) ? TCL_LEAVE_ERR_MSG|TCL_NAMESPACE_ONLY : TCL_LEAVE_ERR_MSG; Nsf_PushFrameObj(interp, object, framePtr); if (likely(valueObj == NULL)) { resultObj = Tcl_ObjGetVar2(interp, nameObj, NULL, flags); } else { /*fprintf(stderr, "setvar in obj %s: name %s = %s\n", ObjectName(object), ObjStr(nameObj), ObjStr(value));*/ resultObj = Tcl_ObjSetVar2(interp, nameObj, NULL, valueObj, flags); } Nsf_PopFrameObj(interp, framePtr); if (resultObj) { Tcl_SetObjResult(interp, resultObj); return TCL_OK; } return TCL_ERROR; } /* *---------------------------------------------------------------------- * SetInstArray -- * * Set an instance variable array of the specified object to the given * value. This function performs essentially an "array set" or "array get" * operation. * * Results: * Tcl result code. * * Side effects: * Set instance variable. * *---------------------------------------------------------------------- */ static int SetInstArray(Tcl_Interp *interp, NsfObject *object, Tcl_Obj *arrayNameObj, Tcl_Obj *valueObj) { CallFrame frame, *framePtr = &frame; int result; Tcl_Obj *ov[4]; assert(object); Nsf_PushFrameObj(interp, object, framePtr); ov[0] = NsfGlobalObjs[NSF_ARRAY]; ov[2] = arrayNameObj; INCR_REF_COUNT(arrayNameObj); if (valueObj == NULL) { /* * Perform an array get */ ov[1] = NsfGlobalObjs[NSF_GET]; result = Tcl_EvalObjv(interp, 3, ov, 0); } else { /* * Perform an array get */ ov[1] = NsfGlobalObjs[NSF_SET]; ov[3] = valueObj; INCR_REF_COUNT(valueObj); result = Tcl_EvalObjv(interp, 4, ov, 0); DECR_REF_COUNT(valueObj); } DECR_REF_COUNT(arrayNameObj); Nsf_PopFrameObj(interp, framePtr); return result; } /* *---------------------------------------------------------------------- * UnsetInstVar -- * * Unset an instance variable of the specified object. * * Results: * Tcl result code. * * Side effects: * Variable unset. * *---------------------------------------------------------------------- */ static int UnsetInstVar(Tcl_Interp *interp, int withNocomplain, NsfObject *object, CONST char *name) { CallFrame frame, *framePtr = &frame; int flags, result; assert(object); flags = withNocomplain ? 0 : TCL_LEAVE_ERR_MSG; if (object->nsPtr) {flags |= TCL_NAMESPACE_ONLY;} Nsf_PushFrameObj(interp, object, framePtr); result = Tcl_UnsetVar2(interp, name, NULL, flags); Nsf_PopFrameObj(interp, framePtr); return withNocomplain ? TCL_OK : result; } /* *---------------------------------------------------------------------- * NsfSetterMethod -- * * This Tcl_ObjCmdProc is called, when a setter is invoked. A setter is a * method that access the same-named instance variable. If the setter is * called without arguments, it returns the values, if it is called with * one argument, the argument is used as new value. * * Results: * Tcl result code. * * Side effects: * Can set an instance variable. * *---------------------------------------------------------------------- */ static int NsfSetterMethod(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) { SetterCmdClientData *cd = (SetterCmdClientData *)clientData; NsfObject *object = cd->object; if (objc > 2) return NsfObjWrongArgs(interp, "wrong # args", object->cmdName, objv[0], "?value?"); if (!object) return NsfDispatchClientDataError(interp, clientData, "object", ObjStr(objv[0])); if (cd->paramsPtr && objc == 2) { Tcl_Obj *outObjPtr; int result, flags = 0; ClientData checkedData; result = ArgumentCheck(interp, objv[1], cd->paramsPtr, RUNTIME_STATE(interp)->doCheckArguments, &flags, &checkedData, &outObjPtr); if (likely(result == TCL_OK)) { result = SetInstVar(interp, object, objv[0], outObjPtr); } if (flags & NSF_PC_MUST_DECR) { DECR_REF_COUNT2("valueObj", outObjPtr); } return result; } else { return SetInstVar(interp, object, objv[0], objc == 2 ? objv[1] : NULL); } } /* *---------------------------------------------------------------------- * ForwardArg -- * * This function is a helper function of NsfForwardMethod() and processes a * single entry (ForwardArgObj) of the forward spec. Essentially, it * performs the percent substitution of the forward spec. * * Results: * Tcl result code. * * Side effects: * Updates the provided output arguments. * *---------------------------------------------------------------------- */ static int ForwardArg(Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], Tcl_Obj *ForwardArgObj, ForwardCmdClientData *tcd, Tcl_Obj **out, Tcl_Obj **freeList, int *inputArg, int *mapvalue, int firstPosArg, int *outputincr) { CONST char *ForwardArgString = ObjStr(ForwardArgObj), *p; int totalargs = objc + tcd->nr_args - 1; char c = *ForwardArgString; /* * Per default every ForwardArgString from the processed list corresponds to * exactly one ForwardArgString in the computed final list. */ *outputincr = 1; p = ForwardArgString; /* fprintf(stderr, "ForwardArg: processing '%s'\n", ForwardArgString);*/ if (c == '%' && *(ForwardArgString+1) == '@') { char *remainder = NULL; long pos; ForwardArgString += 2; pos = strtol(ForwardArgString, &remainder, 0); /*fprintf(stderr, "strtol('%s) returned %ld '%s'\n", ForwardArgString, pos, remainder);*/ if (ForwardArgString == remainder && *ForwardArgString == 'e' && !strncmp(ForwardArgString, "end", 3)) { pos = -1; remainder += 3; } else if (pos < 0) { pos --; } if (ForwardArgString == remainder || abs(pos) > totalargs) { return NsfPrintError(interp, "forward: invalid index specified in argument %s", ObjStr(ForwardArgObj)); } if (!remainder || *remainder != ' ') { return NsfPrintError(interp, "forward: invalid syntax in '%s'; use: %@ ", ObjStr(ForwardArgObj)); } ForwardArgString = ++remainder; /* * In case we address from the end, we reduct further to distinguish from * -1 (void) */ if (pos<0) pos--; /*fprintf(stderr, "remainder = '%s' pos = %ld\n", remainder, pos);*/ *mapvalue = pos; c = *ForwardArgString; } if (c == '%') { Tcl_Obj *list = NULL, **listElements; int nrArgs = objc-1, nrPosArgs = objc - firstPosArg, nrElements = 0; char c1, *firstActualArgument = nrArgs>0 ? ObjStr(objv[1]) : NULL; c = *++ForwardArgString; c1 = *(ForwardArgString+1); if (c == 's' && !strcmp(ForwardArgString, "self")) { *out = tcd->object->cmdName; } else if ((c == 'p' && !strcmp(ForwardArgString, "proc")) || (c == 'm' && !strcmp(ForwardArgString, "method")) ) { CONST char *methodName = ObjStr(objv[0]); /* * If we dispatch a method via ".", we do not want to see the "." in the * %proc, e.g. for the interceptor slots (such as mixin, ...) */ if (FOR_COLON_RESOLVER(methodName)) { *out = Tcl_NewStringObj(methodName + 1, -1); } else { *out = objv[0]; } } else if (c == '1' && (c1 == '\0' || c1 == ' ')) { if (c1 != '\0') { if (unlikely(Tcl_ListObjIndex(interp, ForwardArgObj, 1, &list) != TCL_OK)) { return NsfPrintError(interp, "forward: %%1 must be followed by a valid list, given: '%s'", ObjStr(ForwardArgObj)); } if (unlikely(Tcl_ListObjGetElements(interp, list, &nrElements, &listElements) != TCL_OK)) { return NsfPrintError(interp, "forward: %%1 contains invalid list '%s'", ObjStr(list)); } } else if (unlikely(tcd->subcommands != NULL)) { /* deprecated part */ if (Tcl_ListObjGetElements(interp, tcd->subcommands, &nrElements, &listElements) != TCL_OK) { return NsfPrintError(interp, "forward: %%1 contains invalid list '%s'", ObjStr(tcd->subcommands)); } } else { assert(nrElements <= nrPosArgs); } /*fprintf(stderr, "nrElements=%d, nra=%d firstPos %d objc %d\n", nrElements, nrArgs, firstPosArg, objc);*/ if (nrElements > nrPosArgs) { /* * Insert default subcommand depending on number of arguments. */ /*fprintf(stderr, "inserting listElements[%d] '%s'\n", nrPosArgs, ObjStr(listElements[nrPosArgs]));*/ *out = listElements[nrPosArgs]; } else if (objc <= 1) { return NsfObjWrongArgs(interp, "%1 requires argument;", objv[0], NULL, "arg ..."); } else { /*fprintf(stderr, "copying %%1: '%s'\n", ObjStr(objv[firstPosArg]));*/ *out = objv[firstPosArg]; *inputArg = firstPosArg+1; } } else if (c == '-') { CONST char *firstElementString; int insertRequired, done = 0; /*fprintf(stderr, "process flag '%s'\n", firstActualArgument);*/ if (Tcl_ListObjGetElements(interp, ForwardArgObj, &nrElements, &listElements) != TCL_OK) { return NsfPrintError(interp, "forward: '%s' is not a valid list", ForwardArgString); } if (nrElements < 1 || nrElements > 2) { return NsfPrintError(interp, "forward: '%s': must contain 1 or 2 arguments", ForwardArgString); } firstElementString = ObjStr(listElements[0]); firstElementString++; /* we skip the dash */ if (firstActualArgument && *firstActualArgument == '-') { int i; /*fprintf(stderr, "we have a flag in first argument '%s'\n", firstActualArgument);*/ for (i = 1; i < firstPosArg; i++) { if (strcmp(firstElementString, ObjStr(objv[i])) == 0) { /*fprintf(stderr, "We have a MATCH for '%s' oldInputArg %d\n", ForwardArgString, *inputArg);*/ *out = objv[i]; /* %1 will start at a different place. Proceed if necessary to firstPosArg */ if (*inputArg < firstPosArg) { *inputArg = firstPosArg; } done = 1; break; } } } if (!done) { /* * We have a flag in the actual arguments that does not match. We * proceed to the actual arguments without dashes. */ if (*inputArg < firstPosArg) { *inputArg = firstPosArg; } /* * If the user requested we output the argument also when not * given in the argument list. */ if (nrElements == 2 && Tcl_GetIntFromObj(interp, listElements[1], &insertRequired) == TCL_OK && insertRequired) { /* * No match, but insert of flag is required. */ /*fprintf(stderr, "no match, but insert of %s required\n", firstElementString);*/ *out = Tcl_NewStringObj(firstElementString, -1); *outputincr = 1; goto add_to_freelist; } else { /* * No match, no insert of flag required, we skip the forwarder * option and output nothing. */ /*fprintf(stderr, "no match, nrElements %d insert req %d\n", nrElements, insertRequired);*/ *outputincr = 0; } } } else if (c == 'a' && !strncmp(ForwardArgString, "argcl", 4)) { if (Tcl_ListObjIndex(interp, ForwardArgObj, 1, &list) != TCL_OK) { return NsfPrintError(interp, "forward: %%argclindex must by a valid list, given: '%s'", ForwardArgString); } if (Tcl_ListObjGetElements(interp, list, &nrElements, &listElements) != TCL_OK) { return NsfPrintError(interp, "forward: %%argclindex contains invalid list '%s'", ObjStr(list)); } if (nrArgs >= nrElements) { return NsfPrintError(interp, "forward: not enough elements in specified list of ARGC argument %s", ForwardArgString); } *out = listElements[nrArgs]; } else if (c == '%') { Tcl_Obj *newarg = Tcl_NewStringObj(ForwardArgString, -1); *out = newarg; goto add_to_freelist; } else { /* * Evaluate the given command */ int result; /*fprintf(stderr, "evaluating '%s'\n", ForwardArgString);*/ if ((result = Tcl_EvalEx(interp, ForwardArgString, -1, 0)) != TCL_OK) { return result; } *out = Tcl_DuplicateObj(Tcl_GetObjResult(interp)); /*fprintf(stderr, "result = '%s'\n", ObjStr(*out));*/ goto add_to_freelist; } } else { if (likely(p == ForwardArgString)) { *out = ForwardArgObj; } else { Tcl_Obj *newarg = Tcl_NewStringObj(ForwardArgString, -1); *out = newarg; goto add_to_freelist; } } return TCL_OK; add_to_freelist: if (!*freeList) { *freeList = Tcl_NewListObj(1, out); INCR_REF_COUNT2("freeList", *freeList); } else { Tcl_ListObjAppendElement(interp, *freeList, *out); } return TCL_OK; } /* *---------------------------------------------------------------------- * CallForwarder -- * * Invoke the method to which the forwarder points. This function receives * the already transformed argument vector, calls the method and performs * error handling. * * Results: * Tcl result code. * * Side effects: * Maybe through the invoked command. * *---------------------------------------------------------------------- */ static int CallForwarder(ForwardCmdClientData *tcd, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) { int result; NsfObject *object = tcd->object; CallFrame frame, *framePtr = &frame; tcd->object = NULL; if (unlikely(tcd->verbose)) { Tcl_Obj *cmd = Tcl_NewListObj(objc, objv); fprintf(stderr, "forwarder calls '%s'\n", ObjStr(cmd)); DECR_REF_COUNT(cmd); } if (tcd->objframe) { Nsf_PushFrameObj(interp, object, framePtr); } if (tcd->objProc) { /*fprintf(stderr, "CallForwarder Tcl_NRCallObjProc %p\n", tcd->clientData);*/ result = Tcl_NRCallObjProc(interp, tcd->objProc, tcd->clientData, objc, objv); } else if (TclObjIsNsfObject(interp, tcd->cmdName, &object)) { /*fprintf(stderr, "CallForwarder NsfObjDispatch object %s, objc=%d\n", ObjStr(tcd->cmdName), objc);*/ if (likely(objc > 1)) { result = ObjectDispatch(object, interp, objc, objv, NSF_CSC_IMMEDIATE); } else { result = DispatchDefaultMethod(interp, object, objv[0], NSF_CSC_IMMEDIATE); } } else { /*fprintf(stderr, "CallForwarder: no nsf object %s [0] %s\n", ObjStr(tcd->cmdName), ObjStr(objv[0]));*/ result = Tcl_EvalObjv(interp, objc, objv, 0); } if (tcd->objframe) { Nsf_PopFrameObj(interp, framePtr); } if (unlikely(result == TCL_ERROR && tcd && tcd->onerror)) { Tcl_Obj *ov[2]; ov[0] = tcd->onerror; ov[1] = Tcl_GetObjResult(interp); INCR_REF_COUNT(ov[1]); /*Tcl_EvalObjEx(interp, tcd->onerror, TCL_EVAL_DIRECT);*/ Tcl_EvalObjv(interp, 2, ov, 0); DECR_REF_COUNT(ov[1]); } return result; } /* *---------------------------------------------------------------------- * NsfForwardMethod -- * * This Tcl_ObjCmdProc is called, when a forwarder is invoked. It performs * argument substitution through ForwardArg() and calls finally the method, * to which the call was forwarded via CallForwarder(). * * Results: * Tcl result code. * * Side effects: * Maybe through the invoked command. * *---------------------------------------------------------------------- */ static int NsfForwardMethod(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) { ForwardCmdClientData *tcd = (ForwardCmdClientData *)clientData; int result, inputArg = 1; if (unlikely(!tcd || !tcd->object)) { return NsfDispatchClientDataError(interp, tcd, "object", objc > 0 ? ObjStr(objv[0]) : "forwarder"); } /* * First, we handle two short cuts for simple cases. */ if (tcd->passthrough) { /* * This is set for early binding. This means, that the cmd is already * resolved, we have to care only for objscope. */ return CallForwarder(tcd, interp, objc, objv); } else if (!tcd->args && *(ObjStr(tcd->cmdName)) != '%') { /* * We have have no args, therefore we have only to replace the method name * with the given cmd name. */ ALLOC_ON_STACK(Tcl_Obj*, objc, ov); /*fprintf(stderr, "+++ forwardMethod must subst oc=%d <%s>\n", objc, ObjStr(tcd->cmdName));*/ memcpy(ov, objv, sizeof(Tcl_Obj *)*objc); ov[0] = tcd->cmdName; result = CallForwarder(tcd, interp, objc, ov); FREE_ON_STACK(Tcl_Obj *, ov); return result; } else { Tcl_Obj **ov, *freeList = NULL; int j, outputincr, outputArg = 0, firstPosArg=1, totalargs = objc + tcd->nr_args + 3; ALLOC_ON_STACK(Tcl_Obj*, totalargs, OV); ALLOC_ON_STACK(int, totalargs, objvmap); /*fprintf(stderr, "+++ forwardMethod standard case, allocated %d args, tcd->args %s\n", totalargs, ObjStr(tcd->args));*/ ov = &OV[1]; if (tcd->needobjmap) { memset(objvmap, -1, sizeof(int)*totalargs); } /* * The first argument is always the command, to which we forward. */ if ((result = ForwardArg(interp, objc, objv, tcd->cmdName, tcd, &ov[outputArg], &freeList, &inputArg, &objvmap[outputArg], firstPosArg, &outputincr)) != TCL_OK) { goto exitforwardmethod; } outputArg += outputincr; /* * If we have nonpos args, determine the first pos arg position for %1 */ if (tcd->hasNonposArgs) { firstPosArg = objc; for (j=outputArg; jargs) { Tcl_Obj **listElements; int nrElements; /* * Copy argument list from the definitions. */ Tcl_ListObjGetElements(interp, tcd->args, &nrElements, &listElements); for (j=0; jnr_subcommands=%d size=%d\n", objc, tcd->nr_subcommands, objc+ 2 );*/ if (objc-inputArg>0) { /*fprintf(stderr, " copying remaining %d args starting at [%d]\n", objc-inputArg, outputArg);*/ memcpy(ov+outputArg, objv+inputArg, sizeof(Tcl_Obj *)*(objc-inputArg)); } else { /*fprintf(stderr, " nothing to copy, objc=%d, inputArg=%d\n", objc, inputArg);*/ } if (tcd->needobjmap) { /* * The objmap can shuffle the argument list. We have to set the * addressing relative from the end; -2 means last, -3 element before * last, etc. */ int max = objc + tcd->nr_args - inputArg; for (j=0; jneedobjmap) { for (j=0; jpos) { for(i=j; i>pos; i--) { /*fprintf(stderr, "...moving right %d to %d\n", i-1, i);*/ ov[i] = ov[i-1]; objvmap[i] = objvmap[i-1]; } } else { for(i=j; i %s\n", pos, ObjStr(tmp));*/ ov[pos] = tmp; objvmap[pos] = -1; } } if (tcd->prefix) { /* * If a prefix was provided, prepend a prefix for the subcommands to * avoid name clashes. */ Tcl_Obj *methodName = Tcl_DuplicateObj(tcd->prefix); Tcl_AppendObjToObj(methodName, ov[1]); ov[1] = methodName; INCR_REF_COUNT(ov[1]); } #if 0 for(j=0; jcmdName; result = CallForwarder(tcd, interp, objc, ov); if (tcd->prefix) {DECR_REF_COUNT(ov[1]);} exitforwardmethod: if (freeList) {DECR_REF_COUNT2("freeList", freeList);} FREE_ON_STACK(int, objvmap); FREE_ON_STACK(Tcl_Obj*, OV); } return result; } /* *---------------------------------------------------------------------- * NsfProcAliasMethod -- * * Since alias-resolving happens in dispatch, this Tcl_ObjCmdProc should * never be called during normal operations. The only way to invoke this * could happen via directly calling the handle. * * Results: * TCL_ERROR * * Side effects: * None. * *---------------------------------------------------------------------- */ static int NsfProcAliasMethod(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) { AliasCmdClientData *tcd = (AliasCmdClientData *)clientData; assert(tcd); return NsfDispatchClientDataError(interp, NULL, "object", Tcl_GetCommandName(interp, tcd->aliasCmd)); } /* *---------------------------------------------------------------------- * NsfObjscopedMethod -- * * This Tcl_ObjCmdProc is called, when an objscoped alias is invoked. * * Results: * Tcl result code. * * Side effects: * Maybe through the invoked command. * *---------------------------------------------------------------------- */ static int NsfObjscopedMethod(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) { AliasCmdClientData *tcd = (AliasCmdClientData *)clientData; NsfObject *object = tcd->object; CallFrame frame, *framePtr = &frame; int result; /*fprintf(stderr, "objscopedMethod obj=%p %s, ptr=%p\n", object, ObjectName(object), tcd->objProc);*/ tcd->object = NULL; Nsf_PushFrameObj(interp, object, framePtr); result = Tcl_NRCallObjProc(interp, tcd->objProc, tcd->clientData, objc, objv); Nsf_PopFrameObj(interp, framePtr); return result; } /* *---------------------------------------------------------------------- * IsDashArg -- * * Check, whether the provided argument (pointed to be the index firstArg) * starts with a "-", or is a list starting with a "-". The method returns * via **methodName the name of the dashed argument (without the dash). * * Results: * Enum value dashArgType. * * Side effects: * None. * *---------------------------------------------------------------------- */ typedef enum {NO_DASH, SKALAR_DASH, LIST_DASH} dashArgType; static dashArgType IsDashArg(Tcl_Interp *interp, Tcl_Obj *obj, int firstArg, CONST char **methodName, int *objc, Tcl_Obj **objv[]) { CONST char *flag; assert(obj); if (obj->typePtr == Nsf_OT_listType) { if (Tcl_ListObjGetElements(interp, obj, objc, objv) == TCL_OK && *objc>1) { flag = ObjStr(*objv[0]); /*fprintf(stderr, "we have a list starting with '%s'\n", flag);*/ if (*flag == '-') { *methodName = flag+1; return LIST_DASH; } } } flag = ObjStr(obj); /*fprintf(stderr, "we have a scalar '%s' firstArg %d\n", flag, firstArg);*/ if ((*flag == '-') && isalpha(*((flag)+1))) { if (firstArg) { /* if the argument contains a space, try to split */ CONST char *p= flag+1; while (*p && *p != ' ') p++; if (*p == ' ') { if (Tcl_ListObjGetElements(interp, obj, objc, objv) == TCL_OK) { *methodName = ObjStr(*objv[0]); if (**methodName == '-') {(*methodName)++ ;} return LIST_DASH; } } } *methodName = flag+1; *objc = 1; return SKALAR_DASH; } return NO_DASH; } /* *---------------------------------------------------------------------- * CallConfigureMethod -- * * Call a method identified by a string selector; or provide an error * message. This dispatcher function records as well constructor (init) * calls via this interface. The dispatcher is used in XOTcl's * configure(), interpreting arguments with a leading dash as method dispatches. * This behavior is now implemented in NsfOResidualargsMethod(). * * Results: * Tcl result code. * * Side effects: * Maybe side effects from the called methods. * *---------------------------------------------------------------------- */ static int CallConfigureMethod(Tcl_Interp *interp, NsfObject *object, CONST char *initString, CONST char *methodName, int argc, Tcl_Obj *CONST argv[]) { int result; Tcl_Obj *methodObj = Tcl_NewStringObj(methodName, -1); /*fprintf(stderr, "CallConfigureMethod method %s->'%s' argc %d\n", ObjectName(object), methodName, argc);*/ /* * When configure gets "-init" passed, we call "init" and notice the fact it * in the object's flags. */ if (initString && *initString == *methodName && strcmp(methodName, initString) == 0) { object->flags |= NSF_INIT_CALLED; } Tcl_ResetResult(interp); INCR_REF_COUNT(methodObj); result = CallMethod(object, interp, methodObj, argc, argv, NSF_CM_NO_UNKNOWN|NSF_CSC_IMMEDIATE|NSF_CM_IGNORE_PERMISSIONS); DECR_REF_COUNT(methodObj); /*fprintf(stderr, "method '%s' called args: %d o=%p, result=%d %d\n", methodName, argc+1, object, result, TCL_ERROR);*/ if (result != TCL_OK) { Tcl_Obj *res = Tcl_DuplicateObj(Tcl_GetObjResult(interp)); /* save the result */ INCR_REF_COUNT(res); NsfPrintError(interp, "%s during '%s.%s'", ObjStr(res), ObjectName(object), methodName); DECR_REF_COUNT(res); } return result; } /* * class method implementations */ /* *---------------------------------------------------------------------- * IsRootNamespace -- * * Check, if the provided namespace is the namespace of the base * class of an object system. * * Results: * Boolean value. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int IsRootNamespace(Tcl_Interp *interp, Tcl_Namespace *nsPtr) { NsfObjectSystem *osPtr; for (osPtr = RUNTIME_STATE(interp)->objectSystems; osPtr; osPtr = osPtr->nextPtr) { Tcl_Command cmd = osPtr->rootClass->object.id; if ((Tcl_Namespace *)((Command *)cmd)->nsPtr == nsPtr) { return 1; } } return 0; } /* *---------------------------------------------------------------------- * CallingNameSpace -- * * Find the last invocation outside the Next Scripting system * namespaces. This function return the namespace of the caller but * skips system-specific namespaces (e.g. the namespaces of the * pre-defined slot handlers for mixin and class * registration. etc.) If we would use such namespaces, we would * resolve non-fully-qualified names against the root namespace). * * Results: * Tcl_Namespace or NULL * * Side effects: * None. * *---------------------------------------------------------------------- */ static Tcl_Namespace * CallingNameSpace(Tcl_Interp *interp) { Tcl_CallFrame *framePtr; Tcl_Namespace *nsPtr; /*NsfShowStack(interp);*/ framePtr = CallStackGetActiveProcFrame((Tcl_CallFrame *)Tcl_Interp_varFramePtr(interp)); /* framePtr = BeginOfCallChain(interp, GetSelfObj(interp));*/ for (; framePtr; framePtr = Tcl_CallFrame_callerVarPtr(framePtr)) { nsPtr = Tcl_CallFrame_nsPtr(framePtr); if (IsRootNamespace(interp, nsPtr)) { /*fprintf(stderr, "... %p skip %s\n", framePtr, nsPtr->fullName);*/ continue; } /*fprintf(stderr, "... %p take %s\n", framePtr, nsPtr->fullName); */ break; } if (!framePtr) { nsPtr = Tcl_GetGlobalNamespace(interp); } /*fprintf(stderr, " **** CallingNameSpace: returns %p %s framePtr %p\n", nsPtr, nsPtr ? nsPtr->fullName:"(null)", framePtr);*/ return nsPtr; } /*********************************** * argument handling ***********************************/ static void ArgumentResetRefCounts(struct Nsf_Param CONST *pPtr, Tcl_Obj *valueObj) { if ((pPtr->flags & NSF_ARG_IS_CONVERTER)) { DECR_REF_COUNT2("valueObj", valueObj); } } static int ArgumentCheckHelper(Tcl_Interp *interp, Tcl_Obj *objPtr, struct Nsf_Param CONST *pPtr, int *flags, ClientData *clientData, Tcl_Obj **outObjPtr) { int objc, i, result; Tcl_Obj **ov; /*fprintf(stderr, "ArgumentCheckHelper\n");*/ assert(pPtr->flags & NSF_ARG_MULTIVALUED); assert(*flags & NSF_PC_MUST_DECR); result = Tcl_ListObjGetElements(interp, objPtr, &objc, &ov); if (unlikely(result != TCL_OK)) { return result; } *outObjPtr = Tcl_NewListObj(0, NULL); INCR_REF_COUNT2("valueObj", *outObjPtr); for (i=0; iflags & NSF_ARG_ALLOW_EMPTY && *valueString == '\0') { result = Nsf_ConvertToString(interp, elementObjPtr, pPtr, clientData, &elementObjPtr); } else { result = (*pPtr->converter)(interp, elementObjPtr, pPtr, clientData, &elementObjPtr); } /*fprintf(stderr, "ArgumentCheckHelper convert %s result %d (%s)\n", valueString, result, ObjStr(elementObjPtr));*/ if (result == TCL_OK || result == TCL_CONTINUE) { Tcl_ListObjAppendElement(interp, *outObjPtr, elementObjPtr); /* * If the refCount of the valueObj was already incremented, we have to * decrement it here, since we want the valuObj reclaimed when the list * containing the valueObj is freed. */ ArgumentResetRefCounts(pPtr, elementObjPtr); } else { Tcl_Obj *resultObj = Tcl_GetObjResult(interp); INCR_REF_COUNT(resultObj); NsfPrintError(interp, "invalid value in \"%s\": %s", ObjStr(objPtr), ObjStr(resultObj)); *flags &= ~NSF_PC_MUST_DECR; *outObjPtr = objPtr; DECR_REF_COUNT2("valueObj", *outObjPtr); DECR_REF_COUNT(resultObj); break; } } return result; } static int ArgumentCheck(Tcl_Interp *interp, Tcl_Obj *objPtr, struct Nsf_Param CONST *pPtr, int doCheckArguments, int *flags, ClientData *clientData, Tcl_Obj **outObjPtr) { int result; /* * Default assumption: outObjPtr is not modified. */ *outObjPtr = objPtr; /* * Omit argument checking, provided that ... * ... argument checking is turned off *and* no converter is specified, or * ... the ruling parameter option is 'initcmd' */ if ((unlikely((doCheckArguments & NSF_ARGPARSE_CHECK) == 0) && (pPtr->flags & (NSF_ARG_IS_CONVERTER)) == 0 ) || (pPtr->flags & (NSF_ARG_CMD))) { /* fprintf(stderr, "*** omit argument check for arg %s flags %.6x\n", pPtr->name, pPtr->flags); */ *clientData = ObjStr(objPtr); return TCL_OK; } /* * If the argument is multivalued, perform the check for every element of * the list (pure checker), or we have to build a new list of values (in * case, the converter alters the values). */ if (unlikely(pPtr->flags & NSF_ARG_MULTIVALUED)) { int objc, i; Tcl_Obj **ov; result = Tcl_ListObjGetElements(interp, objPtr, &objc, &ov); if (unlikely(result != TCL_OK)) { return result; } if (objc == 0 && ((pPtr->flags & NSF_ARG_ALLOW_EMPTY) == 0)) { return NsfPrintError(interp, "invalid value for parameter '%s': list is not allowed to be empty", pPtr->name); } /* * In cases where necessary (the output element changed), switch to the * helper function */ for (i=0; iconverter)(interp, elementObjPtr, pPtr, clientData, &elementObjPtr); if (likely(result == TCL_OK || result == TCL_CONTINUE)) { if (ov[i] != elementObjPtr) { /*fprintf(stderr, "ArgumentCheck: switch to output list construction for value %s\n", ObjStr(elementObjPtr));*/ /* * The elementObjPtr differs from the input Tcl_Obj, we switch to * the version of this handler building an output list. But first, * we have to reset the ref-counts from the first conversion. */ ArgumentResetRefCounts(pPtr, elementObjPtr); *flags |= NSF_PC_MUST_DECR; result = ArgumentCheckHelper(interp, objPtr, pPtr, flags, clientData, outObjPtr); break; } } else { Tcl_Obj *resultObj = Tcl_GetObjResult(interp); INCR_REF_COUNT(resultObj); NsfPrintError(interp, "invalid value in \"%s\": %s", ObjStr(objPtr), ObjStr(resultObj)); DECR_REF_COUNT(resultObj); break; } } } else { assert(objPtr == *outObjPtr); if (pPtr->flags & NSF_ARG_ALLOW_EMPTY && *(ObjStr(objPtr)) == '\0') { result = Nsf_ConvertToString(interp, objPtr, pPtr, clientData, outObjPtr); } else { result = (*pPtr->converter)(interp, objPtr, pPtr, clientData, outObjPtr); } /*fprintf(stderr, "ArgumentCheck param %s type %s is converter %d flags %.6x " "outObj changed %d (%p %p) isok %d\n", pPtr->name, pPtr->type, pPtr->flags & NSF_ARG_IS_CONVERTER, pPtr->flags, objPtr != *outObjPtr, objPtr, *outObjPtr, result == TCL_OK);*/ if (unlikely(pPtr->flags & NSF_ARG_IS_CONVERTER) && objPtr != *outObjPtr) { *flags |= NSF_PC_MUST_DECR; } else { /* * If the output obj differs from the input obj, ensure we have * MUST_DECR set. */ assert( *flags & NSF_PC_MUST_DECR || objPtr == *outObjPtr ); } } if (unlikely(result == TCL_CONTINUE)) { *flags |= NSF_ARG_WARN; result = TCL_OK; } return result; } static int ArgumentDefaults(ParseContext *pcPtr, Tcl_Interp *interp, Nsf_Param CONST *ifd, int nrParams, int processFlags) { Nsf_Param CONST *pPtr; int i; for (pPtr = ifd, i=0; i %p %p, default '%s' \n", pPtr->name, pPtr->flags & NSF_ARG_REQUIRED, pPtr->nrArgs, pPtr, pcPtr->clientData[i], pcPtr->objv[i], pPtr->defaultValue ? ObjStr(pPtr->defaultValue) : "NONE");*/ if (pcPtr->objv[i]) { /* * We got an actual value, which was already checked by ArgumentParse(). * In case the value is a switch and NSF_PC_INVERT_DEFAULT is set, we * take the default and invert the value in place. */ if (unlikely(pcPtr->flags[i] & NSF_PC_INVERT_DEFAULT)) { int bool; Tcl_GetBooleanFromObj(interp, pPtr->defaultValue, &bool); pcPtr->objv[i] = Tcl_NewBooleanObj(!bool); /* * Perform bookkeeping to avoid that someone releases the new obj * before we are done. The according DECR is performed by * ParseContextRelease() */ INCR_REF_COUNT2("valueObj", pcPtr->objv[i]); pcPtr->flags[i] |= NSF_PC_MUST_DECR; pcPtr->status |= NSF_PC_STATUS_MUST_DECR; } } else { /* * No valued was passed, check if a default is available. */ if (pPtr->defaultValue) { int mustDecrNewValue; Tcl_Obj *newValue = pPtr->defaultValue; ClientData checkedData; /* * We have a default value for the argument. Mark that this argument * gets the default value. */ pcPtr->flags[i] |= NSF_PC_IS_DEFAULT; /* Is it necessary to substitute the default value? */ if (unlikely(pPtr->flags & NSF_ARG_SUBST_DEFAULT)) { Tcl_Obj *obj = Tcl_SubstObj(interp, newValue, TCL_SUBST_ALL); if (likely(obj != NULL)) { newValue = obj; } else { pcPtr->flags[i] = 0; return TCL_ERROR; } /* The matching DECR is performed by ParseContextRelease() */ INCR_REF_COUNT2("valueObj", newValue); /*fprintf(stderr, "SUBST_DEFAULT increments %p refCount %d\n", newValue,newValue->refCount);*/ mustDecrNewValue = 1; pcPtr->flags[i] |= NSF_PC_MUST_DECR; pcPtr->status |= NSF_PC_STATUS_MUST_DECR; } else { mustDecrNewValue = 0; } pcPtr->objv[i] = newValue; /*fprintf(stderr, "==> setting default value '%s' for var '%s' flag %d type %s conv %p\n", ObjStr(newValue), pPtr->name, pPtr->flags & NSF_ARG_INITCMD, pPtr->type, pPtr->converter);*/ /* * Check the default value if necessary */ if (pPtr->type || unlikely(pPtr->flags & NSF_ARG_MULTIVALUED)) { int mustDecrList = 0; if (unlikely((pPtr->flags & NSF_ARG_INITCMD) == 0 && ArgumentCheck(interp, newValue, pPtr, RUNTIME_STATE(interp)->doCheckArguments, &mustDecrList, &checkedData, &pcPtr->objv[i]) != TCL_OK)) { if (mustDecrNewValue) { DECR_REF_COUNT2("valueObj", newValue); pcPtr->flags[i] &= ~NSF_PC_MUST_DECR; } return TCL_ERROR; } if (unlikely(pcPtr->objv[i] != newValue)) { /* * The output Tcl_Obj differs from the input, so the * Tcl_Obj was converted; in case we have set previously * must_decr on newValue, we decr the refCount on newValue * here and clear the flag. */ if (mustDecrNewValue) { DECR_REF_COUNT2("valueObj", newValue); pcPtr->flags[i] &= ~NSF_PC_MUST_DECR; } /* * The new output value itself might require a decr, so * set the flag here if required; this is just necessary * for multivalued converted output. */ if (mustDecrList) { pcPtr->flags[i] |= NSF_PC_MUST_DECR; pcPtr->status |= NSF_PC_STATUS_MUST_DECR; } } } else { /*fprintf(stderr, "Param %s default %s type %s\n", pPtr->name, ObjStr(pPtr->defaultValue), pPtr->type);*/ assert(pPtr->type ? pPtr->defaultValue == NULL : 1); } } else if (unlikely(pPtr->flags & NSF_ARG_REQUIRED) && (processFlags & NSF_ARGPARSE_FORCE_REQUIRED)) { Tcl_Obj *paramDefsObj = NsfParamDefsSyntax(ifd); NsfPrintError(interp, "required argument '%s' is missing, should be:\n\t%s%s%s %s", pPtr->nameObj ? ObjStr(pPtr->nameObj) : pPtr->name, pcPtr->object ? ObjectName(pcPtr->object) : "", pcPtr->object ? " " : "", ObjStr(pcPtr->full_objv[0]), ObjStr(paramDefsObj)); DECR_REF_COUNT2("paramDefsObj", paramDefsObj); return TCL_ERROR; } else { /* * Use as dummy default value an arbitrary symbol, which must * not be returned to the Tcl level level; this value is unset * later typically by NsfUnsetUnknownArgsCmd(). */ pcPtr->objv[i] = NsfGlobalObjs[NSF___UNKNOWN__]; } } } return TCL_OK; } /* *---------------------------------------------------------------------- * ArgumentParse -- * * Parse the argument vector based on the parameter definitions. * The parsed argument vector is returned in a normalized order * in the parse context. * * Results: * Tcl return code. * * Side effects: * None. * *---------------------------------------------------------------------- */ int Nsf_ArgumentParse(Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], Nsf_Object *object, Tcl_Obj *procNameObj, Nsf_Param CONST *paramPtr, int nrParams, int serial, int processFlags, Nsf_ParseContext *pcPtr) { return ArgumentParse(interp, objc, objv, (NsfObject *)object, procNameObj, paramPtr, nrParams, serial, processFlags, (ParseContext *)pcPtr); } #define SkipNonposParamDefs(cPtr) \ for (; ++cPtr <= lastParamPtr && *cPtr->name == '-';) static Nsf_Param CONST * NextParam(Nsf_Param CONST *paramPtr, Nsf_Param CONST *lastParamPtr) { for (; ++paramPtr <= lastParamPtr && *paramPtr->name == '-'; ); return paramPtr; } static int ArgumentParse(Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], NsfObject *object, Tcl_Obj *procNameObj, Nsf_Param CONST *paramPtr, int nrParams, int serial, int processFlags, ParseContext *pcPtr) { int o, dashdash = 0, j; Nsf_Param CONST *currentParamPtr = paramPtr; Nsf_Param CONST *lastParamPtr = paramPtr + nrParams - 1; ParseContextInit(pcPtr, nrParams, object, objv[0]); #if defined(PARSE_TRACE) { Nsf_Param CONST *pPtr; fprintf(stderr, "PARAMETER "); for (o = 0, pPtr = paramPtr; pPtr->name; o++, pPtr++) { fprintf(stderr, "[%d]%s (nrargs %d %s) ", o, pPtr->name, pPtr->nrArgs, pPtr->flags & NSF_ARG_REQUIRED ? "req" : "opt"); } fprintf(stderr, "\n"); fprintf(stderr, "BEGIN (%d) [0]%s ", objc, ObjStr(procNameObj)); for (o = 1; o < objc; o++) {fprintf(stderr, "[%d]%s ", o, ObjStr(objv[o]));} fprintf(stderr, "\n"); } #endif for (o = 1; o < objc; o++) { Nsf_Param CONST *pPtr = currentParamPtr; Tcl_Obj *argumentObj = objv[o]; Tcl_Obj *valueObj = NULL; char *valueInArgument = NULL; #if defined(PARSE_TRACE_FULL) fprintf(stderr, "arg [%d]: %s\n", o, ObjStr(argumentObj)); #endif if (unlikely(currentParamPtr > lastParamPtr)) { return NsfUnexpectedArgumentError(interp, ObjStr(argumentObj), (Nsf_Object*)object, paramPtr, procNameObj); } if (*currentParamPtr->name == '-') { /* * We expect a nonpos arg. Check, if we a Tcl_Obj already converted to * NsfFlagObjType. */ NsfFlag *flagPtr = argumentObj->internalRep.twoPtrValue.ptr1; #if defined(PARSE_TRACE_FULL) fprintf(stderr, "... arg %p %s expect nonpos arg in block %s isFlag %d sig %d serial %d (%d => %d)\n", argumentObj, ObjStr(argumentObj), currentParamPtr->name, argumentObj->typePtr == &NsfFlagObjType, argumentObj->typePtr == &NsfFlagObjType ? flagPtr->signature == paramPtr : 0, argumentObj->typePtr == &NsfFlagObjType ? flagPtr->serial == serial : 0, argumentObj->typePtr == &NsfFlagObjType ? flagPtr->serial : 0, serial ); #endif if (argumentObj->typePtr == &NsfFlagObjType && flagPtr->signature == paramPtr && flagPtr->serial == serial ) { /* * The argument was processed before and the Tcl_Obj is still valid. */ if (flagPtr->flags & NSF_FLAG_DASHDAH) { /* * We got a dashDash, skip nonpos param definitions and continue with next * element from objv. */ SkipNonposParamDefs(currentParamPtr); assert(dashdash == 0); continue; } else if (flagPtr->flags & NSF_FLAG_CONTAINS_VALUE) { /* * We got a flag with an embedded value (e.g -flag=1). */ valueInArgument = "flag"; } pPtr = flagPtr->paramPtr; valueObj = flagPtr->payload; } else { CONST char *argumentString = ObjStr(argumentObj); /* * We are in a state, where we expect a non-positional argument, and * the lookup from the Tcl_Obj has failed. If this non-pos args are * optional, the current argument might contain also a value for a * positional argument maybe the argument is for a posarg * later). First check, if the argument looks like a flag. */ if (argumentString[0] != '-') { /* * The actual argument is not a flag, so proceed in the parameter * vector to the next block (positional parameter) */ SkipNonposParamDefs(currentParamPtr); pPtr = currentParamPtr; /* * currentParamPtr is either NULL or points to a positional parameter */ } else { /* * The actual argument starts with a dash, so search for the flag in * the current block of nonpos parameter definitions */ char ch1 = *(argumentString+1); /* Is there a "--" ? */ if (ch1 == '-' && *(argumentString+2) == '\0' && dashdash == 0) { dashdash = 1; NsfFlagObjSet(interp, argumentObj, paramPtr, serial, NULL, NULL, NSF_FLAG_DASHDAH); SkipNonposParamDefs(currentParamPtr); continue; } valueInArgument = strchr(argumentString, '='); if (valueInArgument) { int found = 0, equalOffset = valueInArgument - argumentString; /* * Handle parameter like -flag=1 */ for (; pPtr <= lastParamPtr && *pPtr->name == '-'; pPtr ++) { if (pPtr->nrArgs > 0) { /* parameter expects no arg, can't be this */ continue; } if ((pPtr->flags & NSF_ARG_NOCONFIG) == 0 && ch1 == pPtr->name[1] && strncmp(argumentString, pPtr->name, equalOffset) == 0 && *(pPtr->name+equalOffset) == '\0') { valueObj = Tcl_NewStringObj(valueInArgument+1,-1); /*fprintf(stderr, "... value from argument = %s\n", ObjStr(valueObj));*/ NsfFlagObjSet(interp, argumentObj, paramPtr, serial, pPtr, valueObj, NSF_FLAG_CONTAINS_VALUE); found = 1; break; } } if (!found) { Nsf_Param CONST *nextParamPtr = NextParam(currentParamPtr, lastParamPtr); if (nextParamPtr > lastParamPtr || (nextParamPtr->flags & NSF_ARG_NOLEADINGDASH)) { return NsfUnexpectedNonposArgumentError(interp, argumentString, (Nsf_Object *)object, currentParamPtr, paramPtr, procNameObj); } pPtr = currentParamPtr = nextParamPtr; } } else { /* * Must be a classical nonpos arg; check for the string in * the parameter definitions. */ int found = 0; for (; pPtr <= lastParamPtr && *pPtr->name == '-'; pPtr ++) { /*fprintf(stderr, "comparing '%s' with '%s'\n", argumentString, pPtr->name);*/ if ((pPtr->flags & NSF_ARG_NOCONFIG) == 0 && ch1 == pPtr->name[1] && strcmp(argumentString, pPtr->name) == 0) { found = 1; NsfFlagObjSet(interp, argumentObj, paramPtr, serial, pPtr, NULL, 0); break; } } if (!found) { Nsf_Param CONST *nextParamPtr = NextParam(currentParamPtr, lastParamPtr); /*fprintf(stderr, "non-pos-arg '%s' not found, current %p %s last %p %s next %p %s\n", argumentString, currentParamPtr, currentParamPtr->name, lastParamPtr, lastParamPtr->name, nextParamPtr, nextParamPtr->name);*/ if (nextParamPtr > lastParamPtr || (nextParamPtr->flags & NSF_ARG_NOLEADINGDASH)) { #if 0 /* * Currently, we can't recover from a deletion of the * parameters in the unknown handler */ int result, refcountBefore = procNameObj->refCount; /*fprintf(stderr, "### refcount of %s before -> %d objc %d\n", ObjStr(procNameObj), procNameObj->refCount, pcPtr->objc);*/ result = NsfCallArgumentUnknownHandler(interp, procNameObj, argumentObj, object); /*fprintf(stderr, "### refcount of %s after -> %d\n", ObjStr(procNameObj), procNameObj->refCount);*/ if (procNameObj->refCount != refcountBefore) { pcPtr->objc = nrParams ; /*fprintf(stderr, "trigger error pcPtr->objc %d\n", pcPtr->objc);*/ return NsfPrintError(interp, "unknown handler for '%s' must not alter definition", ObjStr(argumentObj)); } #endif return NsfUnexpectedNonposArgumentError(interp, argumentString, (Nsf_Object *)object, currentParamPtr, paramPtr, procNameObj); } pPtr = currentParamPtr = nextParamPtr; } } } /* end of lookup loop */ } } assert(pPtr); /* * pPtr points to the actual parameter (part of the currentParamPtr block) * or might point to a place past the last parameter, in which case an * unexpected argument was provided. o is the index of the actual * parameter, valueObj might be already provided for valueInArgument. */ if (unlikely(pPtr > lastParamPtr)) { return NsfUnexpectedArgumentError(interp, ObjStr(argumentObj), (Nsf_Object *)object, paramPtr, procNameObj); } /* * Set the position in the downstream argv (normalized order) */ j = pPtr - paramPtr; #if defined(PARSE_TRACE_FULL) fprintf(stderr, "... pPtr->name %s/%d o %d objc %d\n", pPtr->name, pPtr->nrArgs, o, objc); #endif if (*pPtr->name == '-') { /* process the nonpos arg */ if (pPtr->nrArgs == 1) { /* The nonpos arg expects an argument */ o++; if (unlikely(o >= objc)) { /* we expect an argument, but we are already at the end of the argument list */ return NsfPrintError(interp, "value for parameter '%s' expected", pPtr->name); } assert(valueObj == NULL); valueObj = objv[o]; } else { /* The nonpos arg expects no argument */ if (valueObj == NULL) { valueObj = NsfGlobalObjs[NSF_ONE]; } } } else if (unlikely(pPtr == lastParamPtr && pPtr->converter == ConvertToNothing)) { /* * "args" was given, use the varargs interface. Store the actual * argument into pcPtr->objv. No checking is performed on "args". */ pcPtr->varArgs = 1; pcPtr->objv[j] = argumentObj; #if defined(PARSE_TRACE_FULL) fprintf(stderr, "... args found o %d objc %d\n", o, objc); #endif break; } else { /* * Process an ordinary positional argument. */ currentParamPtr ++; #if defined(PARSE_TRACE_FULL) fprintf(stderr, "... positional arg o %d objc %d, nrArgs %d next paramPtr %s\n", o, objc, pPtr->nrArgs, currentParamPtr->name); #endif if (unlikely(pPtr->nrArgs == 0)) { /* * Allow positional arguments with 0 args for object parameter * aliases, which are always fired. Such parameter are non-consuming, * therefore the processing of the current argument is not finished, we * have to decrement o. We have to check here if we are already at the * end if the parameter vector. */ o--; continue; } if (unlikely(dashdash)) { dashdash = 0; } valueObj = argumentObj; } #if defined(PARSE_TRACE_FULL) fprintf(stderr, "... setting parameter %s pos %d valueObj '%s'\n", pPtr->name, j, valueObj == argumentObj ? "=" : ObjStr(valueObj)); #endif /* * The value for the flag is now in the valueObj. We * check, whether it is value is permissible. */ assert(valueObj); if (unlikely(ArgumentCheck(interp, valueObj, pPtr, processFlags, &pcPtr->flags[j], &pcPtr->clientData[j], &pcPtr->objv[j]) != TCL_OK)) { if (pcPtr->flags[j] & NSF_PC_MUST_DECR) {pcPtr->status |= NSF_PC_STATUS_MUST_DECR;} return TCL_ERROR; } /* * Switches are more tricky: if the flag is provided without * valueInArgument, we take the default and invert it. If valueInArgument * was used, the default inversion must not happen. */ if (likely(valueInArgument == NULL)) { if (unlikely(pPtr->converter == Nsf_ConvertToSwitch)) { /*fprintf(stderr,"... set INVERT_DEFAULT for '%s' flags %.6x\n", pPtr->name, pPtr->flags);*/ pcPtr->flags[j] |= NSF_PC_INVERT_DEFAULT; } } /*fprintf(stderr, "... non-positional pcPtr %p check [%d] obj %p flags %.6x & %p\n", pcPtr, j, pcPtr->objv[j], pcPtr->flags[j], &(pcPtr->flags[j])); */ /* * Provide warnings for double-settings. */ if (unlikely(pcPtr->flags[j] & NSF_ARG_SET)) { Tcl_Obj *cmdLineObj = Tcl_NewListObj(objc-1, objv+1); INCR_REF_COUNT(cmdLineObj); NsfLog(interp, NSF_LOG_WARN, "Non-positional parameter %s was passed more than once (%s%s%s %s)", pPtr->name, object ? ObjectName(object) : "", object ? " method " : "", ObjStr(procNameObj), ObjStr(cmdLineObj)); DECR_REF_COUNT(cmdLineObj); } pcPtr->flags[j] |= NSF_ARG_SET; /* * Embed error message of converter in current context. */ if (unlikely(pcPtr->flags[j] & NSF_ARG_WARN)) { Tcl_Obj *resultObj = Tcl_GetObjResult(interp); Tcl_DString ds, *dsPtr = &ds; Tcl_DStringInit(dsPtr); INCR_REF_COUNT(resultObj); NsfDStringArgv(dsPtr, objc, objv); NsfLog(interp, NSF_LOG_WARN, "%s during:\n%s %s", ObjStr(resultObj), object ? ObjectName(object) : "nsf::proc", Tcl_DStringValue(dsPtr)); DECR_REF_COUNT(resultObj); Tcl_DStringFree(dsPtr); } if (unlikely(pcPtr->flags[j] & NSF_PC_MUST_DECR)) { /* fprintf(stderr, "pcPtr %p setting NSF_PC_STATUS_MUST_DECR\n", pcPtr); */ pcPtr->status |= NSF_PC_STATUS_MUST_DECR; } assert(pcPtr->varArgs == 0); #if defined(PARSE_TRACE_FULL) fprintf(stderr, "... iterate on o %d objc %d, currentParamPtr %s\n", o, objc, currentParamPtr->name); #endif } if (currentParamPtr <= lastParamPtr && pcPtr->varArgs == 0) { /* not all parameter processed, make sure varags is set */ /*fprintf(stderr, ".... not all parms processed, pPtr '%s' j %ld nrParams %d last '%s' varArgs %d\n", currentParamPtr->name, currentParamPtr - paramPtr, nrParams, lastParamPtr->name, pcPtr->varArgs);*/ if (lastParamPtr->converter == ConvertToNothing) { pcPtr->varArgs = 1; } } pcPtr->lastObjc = o; pcPtr->objc = nrParams; #if defined(PARSE_TRACE_FULL) fprintf(stderr, "..... argv processed o %d lastObjc %d nrParams %d olastObjc, nrParams, ovarArgs); #endif return ArgumentDefaults(pcPtr, interp, paramPtr, nrParams, processFlags); } /*********************************** * Begin result setting commands * (essentially List*() and support ***********************************/ static int ListVarKeys(Tcl_Interp *interp, Tcl_HashTable *tablePtr, CONST char *pattern) { Tcl_HashEntry *hPtr; if (pattern && NoMetaChars(pattern)) { Tcl_Obj *patternObj = Tcl_NewStringObj(pattern, -1); INCR_REF_COUNT(patternObj); hPtr = tablePtr ? Tcl_CreateHashEntry(tablePtr, (char *)patternObj, NULL) : NULL; if (hPtr) { Var *val = TclVarHashGetValue(hPtr); Tcl_SetObjResult(interp, TclVarHashGetKey(val)); } else { Tcl_SetObjResult(interp, NsfGlobalObjs[NSF_EMPTY]); } DECR_REF_COUNT(patternObj); } else { Tcl_Obj *list = Tcl_NewListObj(0, NULL); Tcl_HashSearch hSrch; hPtr = tablePtr ? Tcl_FirstHashEntry(tablePtr, &hSrch) : NULL; for (; hPtr; hPtr = Tcl_NextHashEntry(&hSrch)) { Var *val = TclVarHashGetValue(hPtr); Tcl_Obj *key = TclVarHashGetKey(val); if (!pattern || Tcl_StringMatch(ObjStr(key), pattern)) { Tcl_ListObjAppendElement(interp, list, key); } } Tcl_SetObjResult(interp, list); } return TCL_OK; } static Tcl_Command GetOriginalCommand(Tcl_Command cmd) /* The imported command for which the original * command should be returned. */ { Tcl_Command importedCmd; while (1) { /* dereference the namespace import reference chain */ if ((importedCmd = TclGetOriginalCommand(cmd))) { cmd = importedCmd; } /* dereference the Next Scripting alias chain */ if (Tcl_Command_deleteProc(cmd) == AliasCmdDeleteProc) { AliasCmdClientData *tcd = (AliasCmdClientData *)Tcl_Command_objClientData(cmd); cmd = tcd->aliasedCmd; continue; } break; } return cmd; } static int ListProcBody(Tcl_Interp *interp, Proc *procPtr, CONST char *methodName) { Tcl_Obj *methodObj; if (procPtr) { CONST char *body = ObjStr(procPtr->bodyPtr); Tcl_SetObjResult(interp, Tcl_NewStringObj(StripBodyPrefix(body), -1)); return TCL_OK; } methodObj = Tcl_NewStringObj(methodName, -1); INCR_REF_COUNT(methodObj); NsfObjErrType(interp, "info body", methodObj, "a name of a scripted method", NULL); DECR_REF_COUNT(methodObj); return TCL_ERROR; } static Tcl_Obj * ListParamDefs(Tcl_Interp *interp, Nsf_Param CONST *paramsPtr, NsfParamsPrintStyle style) { Tcl_Obj *listObj; switch (style) { case NSF_PARAMS_PARAMETER: listObj = ParamDefsFormat(interp, paramsPtr); break; case NSF_PARAMS_LIST: listObj = ParamDefsList(interp, paramsPtr); break; case NSF_PARAMS_NAMES: listObj = ParamDefsNames(interp, paramsPtr); break; case NSF_PARAMS_SYNTAX: listObj = NsfParamDefsSyntax(paramsPtr); break; default: listObj = NULL; } return listObj; } /* *---------------------------------------------------------------------- * ListCmdParams -- * * Obtains a cmd and a method name and sets as side effect the Tcl result * to either the list. The print-style NSF_PARAMS_NAMES, NSF_PARAMS_LIST, * NSF_PARAMS_PARAMETER, NSF_PARAMS_SYNTAX controls the elements of the * list. * * Results: * Tcl result code. * * Side effects: * Sets interp result * *---------------------------------------------------------------------- */ static int ListCmdParams(Tcl_Interp *interp, Tcl_Command cmd, CONST char *methodName, NsfParamsPrintStyle printStyle) { NsfParamDefs *paramDefs; Tcl_Obj *listObj; Proc *procPtr; assert(methodName); assert(cmd); paramDefs = ParamDefsGet(cmd); if (paramDefs && paramDefs->paramsPtr) { /* * Obtain parameter info from paramDefs. */ listObj = ListParamDefs(interp, paramDefs->paramsPtr, printStyle); Tcl_SetObjResult(interp, listObj); DECR_REF_COUNT2("paramDefsObj", listObj); return TCL_OK; } procPtr = GetTclProcFromCommand(cmd); if (procPtr) { /* * Obtain parameter info from compiled locals. */ CompiledLocal *args = procPtr->firstLocalPtr; listObj = Tcl_NewListObj(0, NULL); for ( ; args; args = args->nextPtr) { if (!TclIsCompiledLocalArgument(args)) { continue; } if (printStyle == NSF_PARAMS_SYNTAX && strcmp(args->name, "args") == 0) { if (args != procPtr->firstLocalPtr) { Tcl_AppendToObj(listObj, " ", 1); } Tcl_AppendToObj(listObj, "?/arg .../?", 11); } else { if (printStyle == NSF_PARAMS_SYNTAX) { /* * A default means that the argument is optional. */ if (args->defValuePtr) { Tcl_AppendToObj(listObj, "?", 1); Tcl_AppendToObj(listObj, args->name, -1); Tcl_AppendToObj(listObj, "?", 1); } else { Tcl_AppendToObj(listObj, "/", 1); Tcl_AppendToObj(listObj, args->name, -1); Tcl_AppendToObj(listObj, "/", 1); } } else { Tcl_Obj *innerListObj = Tcl_NewListObj(0, NULL); Tcl_ListObjAppendElement(interp, innerListObj, Tcl_NewStringObj(args->name, -1)); /* * Return default just for NSF_PARAMS_PARAMETER. */ if (args->defValuePtr && printStyle == NSF_PARAMS_PARAMETER) { Tcl_ListObjAppendElement(interp, innerListObj, args->defValuePtr); } Tcl_ListObjAppendElement(interp, listObj, innerListObj); } } } Tcl_SetObjResult(interp, listObj); return TCL_OK; } { /* * If a command is found for the object|class, check whether we * find the parameter definitions for the C-defined method. */ Nsf_methodDefinition *mdPtr = &method_definitions[0]; for (; mdPtr->methodName; mdPtr ++) { /*fprintf(stderr, "... comparing %p with %p => %s\n", ((Command *)cmd)->objProc, mdPtr->proc, mdPtr->methodName);*/ if (((Command *)cmd)->objProc == mdPtr->proc) { NsfParamDefs paramDefs = {mdPtr->paramDefs, mdPtr->nrParameters, 1, 0, NULL, NULL}; Tcl_Obj *list = ListParamDefs(interp, paramDefs.paramsPtr, printStyle); Tcl_SetObjResult(interp, list); DECR_REF_COUNT2("paramDefsObj", list); return TCL_OK; } } } if (((Command *)cmd)->objProc == NsfSetterMethod) { SetterCmdClientData *cd = (SetterCmdClientData *)Tcl_Command_objClientData(cmd); if (cd && cd->paramsPtr) { Tcl_Obj *list; NsfParamDefs paramDefs; paramDefs.paramsPtr = cd->paramsPtr; paramDefs.nrParams = 1; paramDefs.slotObj = NULL; list = ListParamDefs(interp, paramDefs.paramsPtr, printStyle); Tcl_SetObjResult(interp, list); DECR_REF_COUNT2("paramDefsObj", list); return TCL_OK; } else { Tcl_SetObjResult(interp, Tcl_NewStringObj(methodName, -1)); return TCL_OK; } } /* * In case, we failed so far to obtain a result, try to use the * object-system implementors definitions in the global array * ::nsf::parametersyntax. Note that we can only obtain the * parameter syntax this way. */ if (printStyle == NSF_PARAMS_SYNTAX) { Tcl_DString ds, *dsPtr = &ds; Tcl_Obj *parameterSyntaxObj; Tcl_DStringInit(dsPtr); DStringAppendQualName(dsPtr, Tcl_Command_nsPtr(cmd), methodName); /*fprintf(stderr,"Looking up ::nsf::parametersyntax(%s) ...\n", Tcl_DStringValue(dsPtr));*/ parameterSyntaxObj = Tcl_GetVar2Ex(interp, NsfGlobalStrings[NSF_ARRAY_PARAMETERSYNTAX], Tcl_DStringValue(dsPtr), TCL_GLOBAL_ONLY); /*fprintf(stderr, "No parametersyntax so far methodName %s cmd name %s ns %s\n", methodName, Tcl_GetCommandName(interp, cmd), Tcl_DStringValue(dsPtr));*/ Tcl_DStringFree(dsPtr); if (parameterSyntaxObj) { Tcl_SetObjResult(interp, parameterSyntaxObj); return TCL_OK; } } if (Tcl_Command_objProc(cmd) == NsfForwardMethod) { return NsfPrintError(interp, "info params: could not obtain parameter definition for forwarder '%s'", methodName); } else if (!CmdIsNsfObject(cmd)) { return NsfPrintError(interp, "info params: could not obtain parameter definition for method '%s'", methodName); } else { /* procPtr == NsfObjDispatch, be quiet */ return TCL_OK; } { Tcl_Obj *methodObj = Tcl_NewStringObj(methodName, -1); INCR_REF_COUNT(methodObj); NsfObjErrType(interp, "info params", methodObj, "a method name", NULL); DECR_REF_COUNT(methodObj); } return TCL_ERROR; } static void AppendForwardDefinition(Tcl_Interp *interp, Tcl_Obj *listObj, ForwardCmdClientData *tcd) { if (tcd->prefix) { Tcl_ListObjAppendElement(interp, listObj, Tcl_NewStringObj("-methodprefix", -1)); Tcl_ListObjAppendElement(interp, listObj, tcd->prefix); } if (tcd->subcommands) { Tcl_ListObjAppendElement(interp, listObj, Tcl_NewStringObj("-default", -1)); Tcl_ListObjAppendElement(interp, listObj, tcd->subcommands); } if (tcd->objProc) { Tcl_ListObjAppendElement(interp, listObj, Tcl_NewStringObj("-earlybinding", -1)); } if (tcd->objframe) { Tcl_ListObjAppendElement(interp, listObj, Tcl_NewStringObj("-objframe", -1)); } Tcl_ListObjAppendElement(interp, listObj, tcd->cmdName); if (tcd->args) { Tcl_Obj **args; int nrArgs, i; Tcl_ListObjGetElements(interp, tcd->args, &nrArgs, &args); for (i=0; icmdName); if (withProtection) { Tcl_ListObjAppendElement(interp, listObj, Tcl_Command_flags(cmd) & NSF_CMD_CALL_PRIVATE_METHOD ? Tcl_NewStringObj("private", 7) : Tcl_Command_flags(cmd) & NSF_CMD_CALL_PROTECTED_METHOD ? Tcl_NewStringObj("protected", 9) : Tcl_NewStringObj("public", 6)); } //if (withPer_object) { // Tcl_ListObjAppendElement(interp, listObj, Tcl_NewStringObj("class", 5)); //} if (!NsfObjectIsClass(object) || withPer_object) { Tcl_ListObjAppendElement(interp, listObj, Tcl_NewStringObj("object", 6)); } Tcl_ListObjAppendElement(interp, listObj, Tcl_NewStringObj(registerCmdName, -1)); Tcl_ListObjAppendElement(interp, listObj, Tcl_NewStringObj(methodName, -1)); if (withObjframe) { Tcl_ListObjAppendElement(interp, listObj, Tcl_NewStringObj("-frame", 6)); Tcl_ListObjAppendElement(interp, listObj, Tcl_NewStringObj("object", 6)); } if (Tcl_Command_flags(cmd) & NSF_CMD_NONLEAF_METHOD) { Tcl_ListObjAppendElement(interp, listObj, Tcl_NewStringObj("-frame", 6)); Tcl_ListObjAppendElement(interp, listObj, Tcl_NewStringObj("method", 6)); } } static void AppendReturnsClause(Tcl_Interp *interp, Tcl_Obj *listObj, Tcl_Command cmd) { NsfParamDefs *paramDefs; paramDefs = ParamDefsGet(cmd); if (paramDefs && paramDefs->returns) { /* TODO: avoid hard-coding the script-level/NX-specific keyword "returns" */ Tcl_ListObjAppendElement(interp, listObj, Tcl_NewStringObj("-returns", -1)); Tcl_ListObjAppendElement(interp, listObj, paramDefs->returns); } } static int ListMethod(Tcl_Interp *interp, NsfObject *regObject, NsfObject *defObject, CONST char *methodName, Tcl_Command cmd, int subcmd, int withPer_object) { Tcl_ResetResult(interp); if (!cmd) { if (subcmd == InfomethodsubcmdExistsIdx) { Tcl_SetObjResult(interp, Tcl_NewIntObj(0)); } } else { Tcl_ObjCmdProc *procPtr = Tcl_Command_objProc(cmd); int outputPerObject = 0; Tcl_Obj *resultObj; assert(methodName && *methodName != ':'); if (!NsfObjectIsClass(regObject)) { withPer_object = 1; /* don't output "object" modifier, if regObject is not a class */ outputPerObject = 0; } else { outputPerObject = withPer_object; } switch (subcmd) { case InfomethodsubcmdRegistrationhandleIdx: { Tcl_SetObjResult(interp, MethodHandleObj(regObject, withPer_object, methodName)); return TCL_OK; } case InfomethodsubcmdDefinitionhandleIdx: { Tcl_SetObjResult(interp, MethodHandleObj(defObject, NsfObjectIsClass(defObject) ? withPer_object : 1, Tcl_GetCommandName(interp, cmd))); return TCL_OK; } case InfomethodsubcmdExistsIdx: { Tcl_SetObjResult(interp, Tcl_NewIntObj(1)); return TCL_OK; } case InfomethodsubcmdArgsIdx: { Tcl_Command importedCmd = GetOriginalCommand(cmd); return ListCmdParams(interp, importedCmd, methodName, NSF_PARAMS_NAMES); } case InfomethodsubcmdParameterIdx: { Tcl_Command importedCmd = GetOriginalCommand(cmd); return ListCmdParams(interp, importedCmd, methodName, NSF_PARAMS_PARAMETER); } case InfomethodsubcmdReturnsIdx: { Tcl_Command importedCmd; NsfParamDefs *paramDefs; importedCmd = GetOriginalCommand(cmd); paramDefs = ParamDefsGet(importedCmd); if (paramDefs && paramDefs->returns) { Tcl_SetObjResult(interp, paramDefs->returns); } return TCL_OK; } case InfomethodsubcmdSyntaxIdx: { Tcl_Command importedCmd = GetOriginalCommand(cmd); return ListCmdParams(interp, importedCmd, methodName, NSF_PARAMS_SYNTAX); } case InfomethodsubcmdPreconditionIdx: { #if defined(NSF_WITH_ASSERTIONS) NsfProcAssertion *procs; if (withPer_object) { procs = regObject->opt ? AssertionFindProcs(regObject->opt->assertions, methodName) : NULL; } else { NsfClass *class = (NsfClass *)regObject; procs = class->opt ? AssertionFindProcs(class->opt->assertions, methodName) : NULL; } if (procs) Tcl_SetObjResult(interp, AssertionList(interp, procs->pre)); #endif return TCL_OK; } case InfomethodsubcmdPostconditionIdx: { #if defined(NSF_WITH_ASSERTIONS) NsfProcAssertion *procs; if (withPer_object) { procs = regObject->opt ? AssertionFindProcs(regObject->opt->assertions, methodName) : NULL; } else { NsfClass *class = (NsfClass *)regObject; procs = class->opt ? AssertionFindProcs(class->opt->assertions, methodName) : NULL; } if (procs) Tcl_SetObjResult(interp, AssertionList(interp, procs->post)); #endif return TCL_OK; } case InfomethodsubcmdSubmethodsIdx: { Tcl_Command origCmd = GetOriginalCommand(cmd); if (CmdIsNsfObject(origCmd)) { NsfObject *subObject = NsfGetObjectFromCmdPtr(origCmd); if (subObject) { return ListDefinedMethods(interp, subObject, NULL, 1 /* per-object */, NSF_METHODTYPE_ALL, CallprotectionAllIdx, 0); } } /* all other cases return empty */ Tcl_SetObjResult(interp, NsfGlobalObjs[NSF_EMPTY]); return TCL_OK; } } /* * The subcommands differ per type of method. The converter in * InfoMethods defines the types: * * all|scripted|builtin|alias|forwarder|object|setter|nsfproc */ if (GetTclProcFromCommand(cmd)) { /* a scripted method */ switch (subcmd) { case InfomethodsubcmdTypeIdx: Tcl_SetObjResult(interp, Tcl_NewStringObj("scripted", -1)); break; case InfomethodsubcmdBodyIdx: ListProcBody(interp, GetTclProcFromCommand(cmd), methodName); break; case InfomethodsubcmdDefinitionIdx: { resultObj = Tcl_NewListObj(0, NULL); /* todo: don't hard-code registering command name "method" / NSF_METHOD */ AppendMethodRegistration(interp, resultObj, NsfGlobalStrings[NSF_METHOD], regObject, methodName, cmd, 0, outputPerObject, 1); ListCmdParams(interp, cmd, methodName, NSF_PARAMS_PARAMETER); Tcl_ListObjAppendElement(interp, resultObj, Tcl_GetObjResult(interp)); AppendReturnsClause(interp, resultObj, cmd); ListProcBody(interp, GetTclProcFromCommand(cmd), methodName); Tcl_ListObjAppendElement(interp, resultObj, Tcl_GetObjResult(interp)); #if defined(NSF_WITH_ASSERTIONS) { NsfAssertionStore *assertions; if (withPer_object) { assertions = regObject->opt ? regObject->opt->assertions : NULL; } else { NsfClass *class = (NsfClass *)regObject; assertions = class->opt ? class->opt->assertions : NULL; } if (assertions) { NsfProcAssertion *procs = AssertionFindProcs(assertions, methodName); if (procs) { Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj("-precondition", -1)); Tcl_ListObjAppendElement(interp, resultObj, AssertionList(interp, procs->pre)); Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj("-postcondition", -1)); Tcl_ListObjAppendElement(interp, resultObj, AssertionList(interp, procs->post)); } } } #endif Tcl_SetObjResult(interp, resultObj); break; } } } else if (procPtr == NsfForwardMethod) { /* forwarder */ switch (subcmd) { case InfomethodsubcmdTypeIdx: Tcl_SetObjResult(interp, NsfGlobalObjs[NSF_FORWARD]); break; case InfomethodsubcmdDefinitionIdx: { ClientData clientData = cmd ? Tcl_Command_objClientData(cmd) : NULL; if (clientData) { resultObj = Tcl_NewListObj(0, NULL); /* todo: don't hard-code registering command name "forward" / NSF_FORWARD*/ AppendMethodRegistration(interp, resultObj, NsfGlobalStrings[NSF_FORWARD], regObject, methodName, cmd, 0, outputPerObject, 1); AppendReturnsClause(interp, resultObj, cmd); AppendForwardDefinition(interp, resultObj, clientData); Tcl_SetObjResult(interp, resultObj); break; } } } } else if (procPtr == NsfSetterMethod) { /* setter methods */ switch (subcmd) { case InfomethodsubcmdTypeIdx: Tcl_SetObjResult(interp, NsfGlobalObjs[NSF_SETTER]); break; case InfomethodsubcmdDefinitionIdx: { SetterCmdClientData *cd = (SetterCmdClientData *)Tcl_Command_objClientData(cmd); resultObj = Tcl_NewListObj(0, NULL); /* todo: don't hard-code registering command name "setter" / NSF_SETTER */ AppendMethodRegistration(interp, resultObj, NsfGlobalStrings[NSF_SETTER], regObject, (cd && cd->paramsPtr) ? ObjStr(cd->paramsPtr->paramObj) : methodName, cmd, 0, outputPerObject, 1); Tcl_SetObjResult(interp, resultObj); break; } } } else if (procPtr == NsfProcStub) { /* * Special nsfproc handling: */ NsfProcClientData *tcd = Tcl_Command_objClientData(cmd); if (tcd && tcd->procName) { Tcl_Command procCmd = Tcl_GetCommandFromObj(interp, tcd->procName); Tcl_DString ds, *dsPtr = &ds; Tcl_Obj *resultObj; switch (subcmd) { case InfomethodsubcmdTypeIdx: Tcl_SetObjResult(interp, Tcl_NewStringObj("nsfproc", -1)); break; case InfomethodsubcmdBodyIdx: ListProcBody(interp, GetTclProcFromCommand(procCmd), methodName); break; case InfomethodsubcmdDefinitionIdx: resultObj = Tcl_NewListObj(0, NULL); Tcl_DStringInit(dsPtr); DStringAppendQualName(dsPtr, Tcl_Command_nsPtr(cmd), methodName); /* don't hardcode names */ Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj("::nsf::proc", -1)); if (tcd->with_ad) { Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj("-ad", 3)); } Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj(Tcl_DStringValue(dsPtr), Tcl_DStringLength(dsPtr))); ListCmdParams(interp, cmd, Tcl_DStringValue(dsPtr), NSF_PARAMS_PARAMETER); Tcl_ListObjAppendElement(interp, resultObj, Tcl_GetObjResult(interp)); ListProcBody(interp, GetTclProcFromCommand(procCmd), methodName); Tcl_ListObjAppendElement(interp, resultObj, Tcl_GetObjResult(interp)); Tcl_SetObjResult(interp, resultObj); Tcl_DStringFree(dsPtr); break; } } } else { /* * The cmd must be an alias or object. * * Note that some aliases come with procPtr == NsfObjDispatch. * In order to distinguish between "object" and alias, we have * to do the lookup for the entryObj to determine wether it is * really an alias. */ Tcl_Obj *entryObj; entryObj = AliasGet(interp, defObject->cmdName, Tcl_GetCommandName(interp, cmd), regObject != defObject ? 1 : withPer_object, 0); /* fprintf(stderr, "aliasGet %s -> %s/%s (%d) returned %p\n", ObjectName(defObject), methodName, Tcl_GetCommandName(interp, cmd), withPer_object, entryObj); fprintf(stderr, "... regObject %p %s\n", regObject, ObjectName(regObject)); fprintf(stderr, "... defObject %p %s\n", defObject, ObjectName(defObject)); */ if (entryObj) { /* is an alias */ switch (subcmd) { case InfomethodsubcmdTypeIdx: Tcl_SetObjResult(interp, NsfGlobalObjs[NSF_ALIAS]); break; case InfomethodsubcmdDefinitionIdx: { int nrElements; Tcl_Obj **listElements; resultObj = Tcl_NewListObj(0, NULL); Tcl_ListObjGetElements(interp, entryObj, &nrElements, &listElements); /* todo: don't hard-code registering command name "alias" / NSF_ALIAS */ AppendMethodRegistration(interp, resultObj, NsfGlobalStrings[NSF_ALIAS], regObject, methodName, cmd, procPtr == NsfObjscopedMethod, outputPerObject, 1); AppendReturnsClause(interp, resultObj, cmd); Tcl_ListObjAppendElement(interp, resultObj, listElements[nrElements-1]); Tcl_SetObjResult(interp, resultObj); break; } case InfomethodsubcmdOriginIdx: { int nrElements; Tcl_Obj **listElements; Tcl_ListObjGetElements(interp, entryObj, &nrElements, &listElements); Tcl_SetObjResult(interp, listElements[nrElements-1]); break; } } } else { /* check, to be on the safe side */ if (CmdIsNsfObject(cmd)) { /* the command is an object */ switch (subcmd) { case InfomethodsubcmdTypeIdx: Tcl_SetObjResult(interp, Tcl_NewStringObj("object", -1)); break; case InfomethodsubcmdDefinitionIdx: { NsfObject *subObject = NsfGetObjectFromCmdPtr(cmd); assert(subObject); resultObj = Tcl_NewListObj(0, NULL); AppendMethodRegistration(interp, resultObj, "create", &(subObject->cl)->object, ObjStr(subObject->cmdName), cmd, 0, 0, 0); Tcl_SetObjResult(interp, resultObj); break; } } } else { /* * Should never happen. * * The warning is just a guess, so we don't raise an error here. */ NsfLog(interp, NSF_LOG_WARN, "Could not obtain alias definition for %s. " "Maybe someone deleted the alias %s for object %s?", methodName, methodName, ObjectName(regObject)); Tcl_ResetResult(interp); } } } } return TCL_OK; } /* *---------------------------------------------------------------------- * MethodSourceMatches -- * * Check, whether the provided class or object (mutually exclusive) matches * with the required method source (typically all|application|system). * * Results: * Returns true or false * * Side effects: * None. * *---------------------------------------------------------------------- */ static int MethodSourceMatches(int withSource, NsfClass *cl, NsfObject *object) { int isBaseClass; if (withSource == SourceAllIdx) { return 1; } if (cl == NULL) { /* * If the method is object specific, it can't be from a baseclass and must * be application specific. */ return (withSource == SourceApplicationIdx && !IsBaseClass(object)); } isBaseClass = IsBaseClass(&cl->object); if (withSource == SourceSystemIdx && isBaseClass) { return 1; } else if (withSource == SourceApplicationIdx && !isBaseClass) { return 1; } return 0; } /* *---------------------------------------------------------------------- * MethodTypeMatches -- * * Check, whether the provided method (specified as a cmd) matches with the * required method type (typically * all|scripted|builtin|alias|forwarder|object|setter). * * Results: * Returns true or false * * Side effects: * None. * *---------------------------------------------------------------------- */ static int MethodTypeMatches(Tcl_Interp *interp, int methodType, Tcl_Command cmd, NsfObject *object, CONST char *methodName, int withPer_object, int *isObject) { Tcl_Command importedCmd; Tcl_ObjCmdProc *proc, *resolvedProc; assert(isObject); proc = Tcl_Command_objProc(cmd); importedCmd = GetOriginalCommand(cmd); resolvedProc = Tcl_Command_objProc(importedCmd); /* * Return always state isObject, since the cmd might be an ensemble, * where we have to search further */ *isObject = CmdIsNsfObject(importedCmd); if (methodType == NSF_METHODTYPE_ALIAS) { if (!(proc == NsfProcAliasMethod || AliasGet(interp, object->cmdName, methodName, withPer_object, 0))) { return 0; } } else { if (proc == NsfProcAliasMethod) { if ((methodType & NSF_METHODTYPE_ALIAS) == 0) return 0; } /* the following cases are disjoint */ if (CmdIsProc(importedCmd)) { /*fprintf(stderr,"%s scripted %d\n", methodName, methodType & NSF_METHODTYPE_SCRIPTED);*/ if ((methodType & NSF_METHODTYPE_SCRIPTED) == 0) return 0; } else if (resolvedProc == NsfForwardMethod) { if ((methodType & NSF_METHODTYPE_FORWARDER) == 0) return 0; } else if (resolvedProc == NsfSetterMethod) { if ((methodType & NSF_METHODTYPE_SETTER) == 0) return 0; } else if (*isObject) { if ((methodType & NSF_METHODTYPE_OBJECT) == 0) return 0; } else if (resolvedProc == NsfProcStub) { if ((methodType & NSF_METHODTYPE_NSFPROC) == 0) return 0; } else if ((methodType & NSF_METHODTYPE_OTHER) == 0) { /* fprintf(stderr,"OTHER %s not wanted %.4x\n", methodName, methodType);*/ return 0; } /* NsfObjscopedMethod ??? */ } return 1; } /* *---------------------------------------------------------------------- * ProtectionMatches -- * * Check, whether the provided method (specified as a cmd) matches with the * required call-protection (typically all|public|protected|private). * * Results: * Returns true or false * * Side effects: * None. * *---------------------------------------------------------------------- */ static int ProtectionMatches(int withCallprotection, Tcl_Command cmd) { int result, isProtected, isPrivate, cmdFlags; assert(cmd); cmdFlags = Tcl_Command_flags(cmd); isProtected = (cmdFlags & NSF_CMD_CALL_PROTECTED_METHOD) != 0; isPrivate = (cmdFlags & NSF_CMD_CALL_PRIVATE_METHOD) != 0; if (withCallprotection == CallprotectionNULL) { withCallprotection = CallprotectionPublicIdx; } switch (withCallprotection) { case CallprotectionAllIdx: result = 1; break; case CallprotectionPublicIdx: result = (isProtected == 0); break; case CallprotectionProtectedIdx: result = isProtected && !isPrivate; break; case CallprotectionPrivateIdx: result = isPrivate; break; default: result = 1; } return result; } /* *---------------------------------------------------------------------- * * ListMethodKeys -- * * List the method names contained in the specified hash-table * according to the filtering options (types, pattern, * protection, etc.). Optionally, a name prefix can be provided * in form of a Tcl_DString. The result is placed into the interp * result. * * Results: * Tcl result code. * * Side effects: * Setting interp result. * *---------------------------------------------------------------------- */ static int ListMethodKeys(Tcl_Interp *interp, Tcl_HashTable *tablePtr, Tcl_DString *prefix, CONST char *pattern, int methodType, int withCallprotection, int withPath, Tcl_HashTable *dups, NsfObject *object, int withPer_object) { Tcl_HashSearch hSrch; Tcl_HashEntry *hPtr; Tcl_Command cmd; char *key; int isObject, methodTypeMatch; int prefixLength = prefix ? Tcl_DStringLength(prefix) : 0; Tcl_Obj *resultObj = Tcl_GetObjResult(interp); assert(tablePtr); if (pattern && NoMetaChars(pattern) && strchr(pattern, ' ') == NULL) { /* * We have a pattern that can be used for direct lookup; no need * to iterate. */ hPtr = Tcl_CreateHashEntry(tablePtr, pattern, NULL); if (hPtr) { NsfObject *childObject; Tcl_Command origCmd; key = Tcl_GetHashKey(tablePtr, hPtr); cmd = (Tcl_Command)Tcl_GetHashValue(hPtr); methodTypeMatch = MethodTypeMatches(interp, methodType, cmd, object, key, withPer_object, &isObject); if (Tcl_Command_flags(cmd) & NSF_CMD_CLASS_ONLY_METHOD && !NsfObjectIsClass(object)) { return TCL_OK; } /* * Aliased objects methods return 1 but lookup from cmd returns * NULL. Below, we are just interested on true subobjects. */ origCmd = GetOriginalCommand(cmd); childObject = isObject ? NsfGetObjectFromCmdPtr(origCmd) : NULL; if (childObject) { if (withPath) { return TCL_OK; } /* * Treat aliased object dispatch different from direct object * dispatches. */ #if 0 if (cmd == origCmd && (childObject->flags & NSF_ALLOW_METHOD_DISPATCH ) == 0) { /*fprintf(stderr, "no method dispatch allowed on child %s\n", ObjectName(childObject));*/ return TCL_OK; } #endif } if (ProtectionMatches(withCallprotection, cmd) && methodTypeMatch) { if (prefixLength) { Tcl_DStringAppend(prefix, key, -1); key = Tcl_DStringValue(prefix); } if (dups) { int new; Tcl_CreateHashEntry(dups, key, &new); if (new) { Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj(key, -1)); } } else { Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj(key, -1)); } } } return TCL_OK; } else { /* * We have to iterate over the elements */ for (hPtr = Tcl_FirstHashEntry(tablePtr, &hSrch); hPtr; hPtr = Tcl_NextHashEntry(&hSrch)) { NsfObject *childObject; Tcl_Command origCmd; key = Tcl_GetHashKey(tablePtr, hPtr); cmd = (Tcl_Command)Tcl_GetHashValue(hPtr); if (prefixLength) {Tcl_DStringTrunc(prefix, prefixLength);} methodTypeMatch = MethodTypeMatches(interp, methodType, cmd, object, key, withPer_object, &isObject); /* * Aliased objects methods return 1 but lookup from cmd returns * NULL. Below, we are just interested on true subobjects. */ origCmd = GetOriginalCommand(cmd); childObject = isObject ? NsfGetObjectFromCmdPtr(origCmd) : NULL; if (childObject) { if (withPath) { Tcl_DString ds, *dsPtr = &ds; Tcl_HashTable *cmdTablePtr = childObject->nsPtr ? Tcl_Namespace_cmdTablePtr(childObject->nsPtr) : NULL; if (cmdTablePtr == NULL || childObject == NULL) { /* nothing to do */ continue; } if (childObject->flags & NSF_IS_SLOT_CONTAINER) { /* Don't report slot container */ continue; } if ((childObject->flags & NSF_KEEP_CALLER_SELF) == 0) { /* Do only report sub-objects with keep caller self */ continue; } /*fprintf(stderr, "ListMethodKeys key %s append key space flags %.6x\n", key, childObject->flags);*/ if (prefix == NULL) { DSTRING_INIT(dsPtr); Tcl_DStringAppend(dsPtr, key, -1); Tcl_DStringAppend(dsPtr, " ", 1); ListMethodKeys(interp, cmdTablePtr, dsPtr, pattern, methodType, withCallprotection, 1, dups, object, withPer_object); DSTRING_FREE(dsPtr); } else { Tcl_DStringAppend(prefix, key, -1); Tcl_DStringAppend(prefix, " ", 1); ListMethodKeys(interp, cmdTablePtr, prefix, pattern, methodType, withCallprotection, 1, dups, object, withPer_object); } /* don't list ensembles by themselves */ continue; } /* * Treat aliased object dispatch different from direct object * dispatches. */ #if 0 if (cmd == origCmd && (childObject->flags & NSF_ALLOW_METHOD_DISPATCH ) == 0) { /*fprintf(stderr, "no method dispatch allowed on child %s\n", ObjectName(childObject));*/ continue; } #endif } if (Tcl_Command_flags(cmd) & NSF_CMD_CLASS_ONLY_METHOD && !NsfObjectIsClass(object)) continue; if (!ProtectionMatches(withCallprotection, cmd) || !methodTypeMatch) continue; if (prefixLength) { Tcl_DStringAppend(prefix, key, -1); key = Tcl_DStringValue(prefix); } if (pattern && !Tcl_StringMatch(key, pattern)) continue; if (dups) { int new; Tcl_CreateHashEntry(dups, key, &new); if (!new) continue; } Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj(key, -1)); } } /*fprintf(stderr, "listkeys returns '%s'\n", ObjStr(Tcl_GetObjResult(interp)));*/ return TCL_OK; } static int ListChildren(Tcl_Interp *interp, NsfObject *object, CONST char *pattern, int classesOnly, NsfClass *type) { NsfObject *childObject; if (!object->nsPtr) return TCL_OK; if (pattern && NoMetaChars(pattern)) { Tcl_DString ds, *dsPtr = &ds; Tcl_DStringInit(dsPtr); if (*pattern != ':') { /* build a fully qualified name */ DStringAppendQualName(dsPtr, object->nsPtr, pattern); pattern = Tcl_DStringValue(dsPtr); } if ((childObject = GetObjectFromString(interp, pattern)) && (!classesOnly || NsfObjectIsClass(childObject)) && (!type || IsSubType(childObject->cl, type)) && (Tcl_Command_nsPtr(childObject->id) == object->nsPtr) /* true children */ ) { Tcl_SetObjResult(interp, childObject->cmdName); } else { Tcl_SetObjResult(interp, NsfGlobalObjs[NSF_EMPTY]); } Tcl_DStringFree(dsPtr); } else { Tcl_Obj *list = Tcl_NewListObj(0, NULL); Tcl_HashSearch hSrch; Tcl_HashTable *cmdTablePtr = Tcl_Namespace_cmdTablePtr(object->nsPtr); Tcl_HashEntry *hPtr; char *key; for (hPtr = Tcl_FirstHashEntry(cmdTablePtr, &hSrch); hPtr; hPtr = Tcl_NextHashEntry(&hSrch)) { key = Tcl_GetHashKey(cmdTablePtr, hPtr); if (!pattern || Tcl_StringMatch(key, pattern)) { Tcl_Command cmd = (Tcl_Command)Tcl_GetHashValue(hPtr); /*fprintf(stderr, "... check %s child key %s child object %p %p\n", ObjectName(object), key, GetObjectFromString(interp, key), NsfGetObjectFromCmdPtr(cmd));*/ if ((childObject = NsfGetObjectFromCmdPtr(cmd)) && (!classesOnly || NsfObjectIsClass(childObject)) && (!type || IsSubType(childObject->cl, type)) && (Tcl_Command_nsPtr(childObject->id) == object->nsPtr) /* true children */ ) { Tcl_ListObjAppendElement(interp, list, childObject->cmdName); } } } Tcl_SetObjResult(interp, list); } return TCL_OK; } static int ListForward(Tcl_Interp *interp, Tcl_HashTable *tablePtr, CONST char *pattern, int withDefinition) { if (tablePtr == NULL) { return TCL_OK; } if (withDefinition) { Tcl_HashEntry *hPtr = pattern ? Tcl_CreateHashEntry(tablePtr, pattern, NULL) : NULL; /* * Notice: we don't use pattern for wildcard matching here; pattern can * only contain wildcards when used without "-definition". */ if (hPtr) { Tcl_Command cmd = (Tcl_Command)Tcl_GetHashValue(hPtr); ClientData clientData = cmd ? Tcl_Command_objClientData(cmd) : NULL; ForwardCmdClientData *tcd = (ForwardCmdClientData *)clientData; if (tcd && Tcl_Command_objProc(cmd) == NsfForwardMethod) { Tcl_Obj *listObj = Tcl_NewListObj(0, NULL); AppendForwardDefinition(interp, listObj, tcd); Tcl_SetObjResult(interp, listObj); return TCL_OK; } } return NsfPrintError(interp, "'%s' is not a forwarder", pattern); } return ListMethodKeys(interp, tablePtr, NULL, pattern, NSF_METHODTYPE_FORWARDER, CallprotectionAllIdx, 0, NULL, NULL, 0); } /* *---------------------------------------------------------------------- * * ListDefinedMethods -- * * List the methods defined by the specified object/class * according to the filtering options (types, pattern, * protection, etc.). The result is placed into the interp * result. * * Results: * Tcl result code. * * Side effects: * Setting interp result. * *---------------------------------------------------------------------- */ static int ListDefinedMethods(Tcl_Interp *interp, NsfObject *object, CONST char *pattern, int withPer_object, int methodType, int withCallproctection, int withPath) { Tcl_HashTable *cmdTablePtr; Tcl_DString ds, *dsPtr = NULL; if (pattern && *pattern == ':' && *(pattern + 1) == ':') { Namespace *nsPtr, *dummy1Ptr, *dummy2Ptr; CONST char *remainder; /*fprintf(stderr, "we have a colon pattern '%s' methodtype %.6x\n", pattern, methodType);*/ TclGetNamespaceForQualName(interp, pattern, NULL, 0, &nsPtr, &dummy1Ptr, &dummy2Ptr, &remainder); /*fprintf(stderr, "TclGetNamespaceForQualName with %s => (%p %s) (%p %s) (%p %s) (%p %s)\n", pattern, nsPtr, nsPtr ? nsPtr->fullName : "", dummy1Ptr, dummy1Ptr ? dummy1Ptr->fullName : "", dummy2Ptr, dummy2Ptr ? dummy2Ptr->fullName : "", remainder, remainder ? remainder : "");*/ if (nsPtr) { cmdTablePtr = Tcl_Namespace_cmdTablePtr(nsPtr); dsPtr = &ds; Tcl_DStringInit(dsPtr); Tcl_DStringAppend(dsPtr, nsPtr->fullName, -1); if (Tcl_DStringLength(dsPtr) > 2) { Tcl_DStringAppend(dsPtr, "::", 2); } pattern = remainder; } else { cmdTablePtr = NULL; } } else if (NsfObjectIsClass(object) && !withPer_object) { cmdTablePtr = Tcl_Namespace_cmdTablePtr(((NsfClass *)object)->nsPtr); } else { cmdTablePtr = object->nsPtr ? Tcl_Namespace_cmdTablePtr(object->nsPtr) : NULL; } if (cmdTablePtr) { ListMethodKeys(interp, cmdTablePtr, dsPtr, pattern, methodType, withCallproctection, withPath, NULL, object, withPer_object); if (dsPtr) { Tcl_DStringFree(dsPtr); } } return TCL_OK; } static int ListSuperclasses(Tcl_Interp *interp, NsfClass *cl, Tcl_Obj *pattern, int withClosure) { NsfObject *matchObject = NULL; Tcl_Obj *patternObj = NULL, *outObjPtr; CONST char *patternString = NULL; ClientData clientData; int rc; if (pattern && ConvertToObjpattern(interp, pattern, NULL, &clientData, &outObjPtr) == TCL_OK) { patternObj = (Tcl_Obj *)clientData; if (GetMatchObject(interp, patternObj, pattern, &matchObject, &patternString) == -1) { /* * The pattern has no meta chars and does not correspond to an existing * object. Therefore, it can't be a superclass. */ if (patternObj) { DECR_REF_COUNT2("patternObj", patternObj); } return TCL_OK; } } if (withClosure) { NsfClasses *pl = TransitiveSuperClasses(cl); if (pl) pl=pl->nextPtr; rc = AppendMatchingElementsFromClasses(interp, pl, patternString, matchObject); } else { NsfClasses *clSuper = NsfReverseClasses(cl->super); rc = AppendMatchingElementsFromClasses(interp, clSuper, patternString, matchObject); NsfClassListFree(clSuper); } if (matchObject) { Tcl_SetObjResult(interp, rc ? matchObject->cmdName : NsfGlobalObjs[NSF_EMPTY]); } if (patternObj) { DECR_REF_COUNT2("patternObj", patternObj); } return TCL_OK; } /******************************** * End result setting commands ********************************/ static CONST char * AliasIndex(Tcl_DString *dsPtr, Tcl_Obj *cmdName, CONST char *methodName, int withPer_object) { Tcl_DStringInit(dsPtr); Tcl_DStringAppend(dsPtr, ObjStr(cmdName), -1); Tcl_DStringAppend(dsPtr, ",", 1); Tcl_DStringAppend(dsPtr, methodName, -11); if (withPer_object) { Tcl_DStringAppend(dsPtr, ",1", 2); } else { Tcl_DStringAppend(dsPtr, ",0", 2); } /*fprintf(stderr, "AI %s\n", Tcl_DStringValue(dsPtr));*/ return Tcl_DStringValue(dsPtr); } static int AliasAdd(Tcl_Interp *interp, Tcl_Obj *cmdName, CONST char *methodName, int withPer_object, CONST char *cmd) { Tcl_DString ds, *dsPtr = &ds; Tcl_SetVar2Ex(interp, NsfGlobalStrings[NSF_ARRAY_ALIAS], AliasIndex(dsPtr, cmdName, methodName, withPer_object), Tcl_NewStringObj(cmd, -1), TCL_GLOBAL_ONLY); /*fprintf(stderr, "aliasAdd ::nsf::alias(%s) '%s' returned %p\n", AliasIndex(dsPtr, cmdName, methodName, withPer_object), cmd, 1);*/ Tcl_DStringFree(dsPtr); return TCL_OK; } static int AliasDelete(Tcl_Interp *interp, Tcl_Obj *cmdName, CONST char *methodName, int withPer_object) { Tcl_DString ds, *dsPtr = &ds; int result = Tcl_UnsetVar2(interp, NsfGlobalStrings[NSF_ARRAY_ALIAS], AliasIndex(dsPtr, cmdName, methodName, withPer_object), TCL_GLOBAL_ONLY); /*fprintf(stderr, "aliasDelete ::nsf::alias(%s) returned %d (%d)\n", AliasIndex(dsPtr, cmdName, methodName, withPer_object), result);*/ Tcl_DStringFree(dsPtr); return result; } static Tcl_Obj * AliasGet(Tcl_Interp *interp, Tcl_Obj *cmdName, CONST char *methodName, int withPer_object, int leaveError) { Tcl_DString ds, *dsPtr = &ds; Tcl_Obj *obj = Tcl_GetVar2Ex(interp, NsfGlobalStrings[NSF_ARRAY_ALIAS], AliasIndex(dsPtr, cmdName, methodName, withPer_object), TCL_GLOBAL_ONLY); /*fprintf(stderr, "aliasGet methodName '%s' returns %p\n", methodName, obj);*/ Tcl_DStringFree(dsPtr); if (obj == NULL && leaveError) { NsfPrintError(interp, "could not obtain alias definition for %s %s.", ObjStr(cmdName), methodName); } return obj; } /* *---------------------------------------------------------------------- * AliasDeleteObjectReference -- * * Delete an alias to an referenced object. Such aliases are * created by registering an alias to an object. This function * distinguishes between a sub-object and an alias to an object, * deletes the alias but never the referenced object. * * Results: * 1 when alias is deleted. * * Side effects: * Deletes cmd sometimes * *---------------------------------------------------------------------- */ static int AliasDeleteObjectReference(Tcl_Interp *interp, Tcl_Command cmd) { NsfObject *referencedObject = NsfGetObjectFromCmdPtr(cmd); /*fprintf(stderr, "AliasDeleteObjectReference on %p obj %p\n", cmd, referencedObject);*/ if (referencedObject && referencedObject->refCount > 0 && cmd != referencedObject->id) { /* * The cmd is an aliased object, reduce the refCount of the * object, delete the cmd. */ /*fprintf(stderr, "remove alias %s to %s\n", Tcl_GetCommandName(interp, cmd), ObjectName(referencedObject));*/ NsfCleanupObject(referencedObject, "AliasDeleteObjectReference"); Tcl_DeleteCommandFromToken(interp, cmd); return 1; } return 0; } /* *---------------------------------------------------------------------- * AliasRefetch -- * * Perform a refetch of an epoched aliased cmd and update the * AliasCmdClientData structure with fresh values. * * Results: * Tcl result code. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int AliasRefetch(Tcl_Interp *interp, NsfObject *object, CONST char *methodName, AliasCmdClientData *tcd) { Tcl_Obj **listElements, *entryObj, *targetObj; int nrElements, withPer_object; NsfObject *defObject; Tcl_Command cmd; assert(tcd); defObject = tcd->class ? &(tcd->class->object) : object; /* * Get the targetObject. Currently, we can get it just via the * alias array. */ withPer_object = tcd->class ? 0 : 1; entryObj = AliasGet(interp, defObject->cmdName, methodName, withPer_object, 1); if (entryObj == NULL) { return TCL_ERROR; } INCR_REF_COUNT(entryObj); Tcl_ListObjGetElements(interp, entryObj, &nrElements, &listElements); targetObj = listElements[nrElements-1]; NsfLog(interp, NSF_LOG_NOTICE, "trying to refetch an epoched cmd %p as %s -- cmdName %s\n", tcd->aliasedCmd, methodName, ObjStr(targetObj)); /* * Replace cmd and its objProc and clientData with a newly fetched * version. */ cmd = Tcl_GetCommandFromObj(interp, targetObj); if (cmd) { cmd = GetOriginalCommand(cmd); /*fprintf(stderr, "cmd %p epoch %d deleted %.6x\n", cmd, Tcl_Command_cmdEpoch(cmd), Tcl_Command_flags(cmd) & CMD_IS_DELETED);*/ if (Tcl_Command_flags(cmd) & CMD_IS_DELETED) { cmd = NULL; } } if (cmd == NULL) { int result = NsfPrintError(interp, "target \"%s\" of alias %s apparently disappeared", ObjStr(targetObj), methodName); DECR_REF_COUNT(entryObj); return result; } assert(Tcl_Command_objProc(cmd)); NsfCommandRelease(tcd->aliasedCmd); tcd->objProc = Tcl_Command_objProc(cmd); tcd->aliasedCmd = cmd; tcd->clientData = Tcl_Command_objClientData(cmd); NsfCommandPreserve(tcd->aliasedCmd); DECR_REF_COUNT(entryObj); /* * Now, we should be able to proceed as planned, we have an * non-epoched aliasCmd. */ return TCL_OK; } /* *---------------------------------------------------------------------- * AliasDereference -- * * Dereference a cmd in respect of the the alias structure. If necessary, * this command refetches the aliased command. * * Results: * NULL, in case refetching fails, * the aliased cmd if it was an alias, or * the original cmd * * Side effects: * None. * *---------------------------------------------------------------------- */ NSF_INLINE static Tcl_Command AliasDereference(Tcl_Interp *interp, NsfObject *object, CONST char *methodName, Tcl_Command cmd) { if (unlikely(Tcl_Command_objProc(cmd) == NsfProcAliasMethod)) { AliasCmdClientData *tcd = (AliasCmdClientData *)Tcl_Command_objClientData(cmd); assert(tcd); if (unlikely(Tcl_Command_cmdEpoch(tcd->aliasedCmd))) { /*fprintf(stderr, "NsfProcAliasMethod aliasedCmd %p epoch %p\n", tcd->aliasedCmd, Tcl_Command_cmdEpoch(tcd->aliasedCmd));*/ if (AliasRefetch(interp, object, methodName, tcd) != TCL_OK) { return NULL; } } return tcd->aliasedCmd; } return cmd; } #if defined(NSF_ASSEMBLE) # include "asm/nsfAssemble.c" #else static int NsfAsmMethodCreateCmd(Tcl_Interp *interp, NsfObject *defObject, int withInner_namespace, int withPer_object, NsfObject *regObject, Tcl_Obj *nameObj, Tcl_Obj *argumentsObj, Tcl_Obj *bodyObj) { return TCL_OK; } #endif /* *---------------------------------------------------------------------- * SetBooleanFlag -- * * Set an unsigned int flag based on valueObj * * Results: * Tcl result code * * Side effects: * update passed flags * *---------------------------------------------------------------------- */ static int SetBooleanFlag(Tcl_Interp *interp, unsigned int *flagsPtr, unsigned int flag, Tcl_Obj *valueObj, int *flagValue) { int result; assert(flagsPtr); result = Tcl_GetBooleanFromObj(interp, valueObj, flagValue); if (result != TCL_OK) { return result; } if (*flagValue) { *flagsPtr |= flag; } else { *flagsPtr &= ~flag; } return result; } /*********************************************************************** * Begin generated Next Scripting commands ***********************************************************************/ /* cmd __db_compile_epoch NsfDebugCompileEpoch {} */ static int NsfDebugCompileEpoch(Tcl_Interp *interp) { Interp *iPtr = (Interp *) interp; Tcl_SetObjResult(interp, Tcl_NewIntObj(iPtr->compileEpoch)); return TCL_OK; } /* cmd __db_show_obj NsfDebugShowObj { {-argName "obj" -required 1 -type tclobj} } */ static int NsfDebugShowObj(Tcl_Interp *interp, Tcl_Obj *objPtr) { fprintf(stderr, "*** obj %p refCount %d type <%s>\n", objPtr, objPtr->refCount, objPtr->typePtr ? objPtr->typePtr->name : ""); if (objPtr->typePtr == &NsfObjectMethodObjType || objPtr->typePtr == &NsfInstanceMethodObjType ) { NsfMethodContext *mcPtr = objPtr->internalRep.twoPtrValue.ptr1; int currentMethodEpoch = objPtr->typePtr == &NsfObjectMethodObjType ? RUNTIME_STATE(interp)->objectMethodEpoch : RUNTIME_STATE(interp)->instanceMethodEpoch; Tcl_Command cmd = mcPtr->cmd; fprintf(stderr, " method epoch %d max %d cmd %p objProc %p flags %.6x\n", mcPtr->methodEpoch, currentMethodEpoch, cmd, cmd ? ((Command *)cmd)->objProc : 0, mcPtr->flags); if (cmd) { fprintf(stderr, "... cmd %p flags %.6x\n", cmd, Tcl_Command_flags(cmd)); assert(((Command *)cmd)->objProc != NULL); } assert( currentMethodEpoch >= mcPtr->methodEpoch); } return TCL_OK; } /* cmd __db_show_stack NsfShowStackCmd {} */ static int NsfShowStackCmd(Tcl_Interp *interp) { NsfShowStack(interp); return TCL_OK; } /* cmd __db_run_assertions NsfDebugRunAssertionsCmd {} */ static int NsfDebugRunAssertionsCmd(Tcl_Interp *interp) { NsfObjectSystem *osPtr; NsfCmdList *instances = NULL, *entry; /* * Collect all instances from all object systems. */ for (osPtr = RUNTIME_STATE(interp)->objectSystems; osPtr; osPtr = osPtr->nextPtr) { GetAllInstances(interp, &instances, osPtr->rootClass); } for (entry = instances; entry; entry = entry->nextPtr) { #if !defined(NDEBUG) NsfObject *object = (NsfObject *)entry->clorobj; #endif assert(object); assert(object->refCount > 0); assert(object->cmdName->refCount > 0); assert(object->activationCount >= 0); #if defined(CHECK_ACTIVATION_COUNTS) if (object->activationCount > 0) { Tcl_CallFrame *framePtr; int count = 0; NsfClasses *unstackedEntries = RUNTIME_STATE(interp)->cscList; /*fprintf(stderr, "DEBUG obj %p %s activationcount %d\n", object, ObjectName(object), object->activationCount);*/ framePtr = (Tcl_CallFrame *)Tcl_Interp_framePtr(interp); for (; framePtr; framePtr = Tcl_CallFrame_callerPtr(framePtr)) { int frameFlags = Tcl_CallFrame_isProcCallFrame(framePtr); NsfCallStackContent *cscPtr = (frameFlags & (FRAME_IS_NSF_METHOD|FRAME_IS_NSF_CMETHOD)) ? ((NsfCallStackContent *)Tcl_CallFrame_clientData(framePtr)) : NULL; if (cscPtr && cscPtr->self == object) count ++; if (cscPtr && (NsfObject *)cscPtr->cl == object) count ++; } for (; unstackedEntries; unstackedEntries = unstackedEntries->nextPtr) { NsfCallStackContent *cscPtr = (NsfCallStackContent *)unstackedEntries->cl; if (cscPtr && cscPtr->self == object) count ++; if (cscPtr && (NsfObject *)cscPtr->cl == object) count ++; } if (count != object->activationCount) { fprintf(stderr, "DEBUG obj %p %s activationcount %d on stack %d; " "might be from non-stacked but active call-stack content\n", object, ObjectName(object), object->activationCount, count); fprintf(stderr, "fixed count %d\n", count); /*NsfShowStack(interp);*/ /*return NsfPrintError(interp, "wrong activation count for object %s", ObjectName(object));*/ } } #endif } CmdListFree(&instances, NULL); /*fprintf(stderr, "all assertions passed\n");*/ return TCL_OK; } /* cmd __profile_clear_data NsfProfileClearDataStub {} */ static int NsfProfileClearDataStub(Tcl_Interp *interp) { #if defined(NSF_PROFILE) NsfProfileClearData(interp); #endif return TCL_OK; } /* cmd __profile_get_data NsfProfileGetDataStub {} */ static int NsfProfileGetDataStub(Tcl_Interp *interp) { #if defined(NSF_PROFILE) NsfProfileGetData(interp); #endif return TCL_OK; } /* *---------------------------------------------------------------------- * NsfUnsetUnknownArgsCmd -- * * Unset variables set from arguments with the default dummy * default value. The dummy default values are set by * ArgumentDefaults() * * Results: * Tcl result code. * * Side effects: * unsets some variables * *---------------------------------------------------------------------- */ /* cmd __unset_unknown_args NsfUnsetUnknownArgsCmd {} */ static int NsfUnsetUnknownArgsCmd(Tcl_Interp *interp) { CallFrame *varFramePtr = Tcl_Interp_varFramePtr(interp); Proc *proc = Tcl_CallFrame_procPtr(varFramePtr); if (likely(proc != NULL)) { CompiledLocal *ap; Var *varPtr; int i; for (ap = proc->firstLocalPtr, i=0; ap; ap = ap->nextPtr, i++) { if (!TclIsCompiledLocalArgument(ap)) continue; varPtr = &Tcl_CallFrame_compiledLocals(varFramePtr)[i]; /*fprintf(stderr, "NsfUnsetUnknownArgsCmd var '%s' i %d fi %d var %p flags %.8x obj %p unk %p\n", ap->name, i, ap->frameIndex, varPtr, varPtr->flags, varPtr->value.objPtr, NsfGlobalObjs[NSF___UNKNOWN__]);*/ if (varPtr->value.objPtr != NsfGlobalObjs[NSF___UNKNOWN__]) continue; /*fprintf(stderr, "NsfUnsetUnknownArgsCmd must unset %s\n", ap->name);*/ Tcl_UnsetVar2(interp, ap->name, NULL, 0); } } return TCL_OK; } /* cmd asmproc NsfAsmProcCmd { {-argName "-ad" -required 0} {-argName "procName" -required 1 -type tclobj} {-argName "arguments" -required 1 -type tclobj} {-argName "body" -required 1 -type tclobj} } */ #if !defined(NSF_ASSEMBLE) static int NsfAsmProcCmd(Tcl_Interp *interp, int with_ad, Tcl_Obj *nameObj, Tcl_Obj *arguments, Tcl_Obj *body) { return TCL_OK; } #else static int NsfAsmProcCmd(Tcl_Interp *interp, int with_ad, Tcl_Obj *nameObj, Tcl_Obj *arguments, Tcl_Obj *body) { NsfParsedParam parsedParam; int result; /* * Parse argument list "arguments" to determine if we should provide * nsf parameter handling. */ result = ParamDefsParse(interp, nameObj, arguments, NSF_DISALLOWED_ARG_METHOD_PARAMETER, 0, &parsedParam); if (result != TCL_OK) { return result; } if (parsedParam.paramDefs) { /* * We need parameter handling. */ result = NsfAsmProcAddParam(interp, &parsedParam, nameObj, body, with_ad); } else { /* * No parameter handling needed. */ result = NsfAsmProcAddArgs(interp, arguments, nameObj, body, with_ad); } return result; } #endif /* cmd configure NsfConfigureCmd { {-argName "configureoption" -required 1 -type "debug|dtrace|filter|profile|softrecreate|objectsystems|keepcmds|checkresults|checkarguments"} {-argName "value" -required 0 -type tclobj} } */ static int NsfConfigureCmd(Tcl_Interp *interp, int configureoption, Tcl_Obj *valueObj) { int bool; #if defined(NSF_DTRACE) if (NSF_DTRACE_CONFIGURE_PROBE_ENABLED()) { /* TODO: opts copied from tclAPI.h; maybe make global value? */ static CONST char *opts[] = { "debug", "dtrace", "filter", "profile", "softrecreate", "objectsystems", "keepcmds", "checkresults", "checkarguments", NULL}; NSF_DTRACE_CONFIGURE_PROBE((char *)opts[configureoption-1], valueObj ? ObjStr(valueObj) : NULL); } #endif if (configureoption == ConfigureoptionObjectsystemsIdx) { NsfObjectSystem *osPtr; Tcl_Obj *list = Tcl_NewListObj(0, NULL); for (osPtr = RUNTIME_STATE(interp)->objectSystems; osPtr; osPtr = osPtr->nextPtr) { Tcl_Obj *osObj = Tcl_NewListObj(0, NULL); Tcl_Obj *systemMethods = Tcl_NewListObj(0, NULL); int idx; Tcl_ListObjAppendElement(interp, osObj, osPtr->rootClass->object.cmdName); Tcl_ListObjAppendElement(interp, osObj, osPtr->rootMetaClass->object.cmdName); for (idx = 0; Nsf_SystemMethodOpts[idx]; idx++) { /*fprintf(stderr, "opt %s %s\n", Nsf_SystemMethodOpts[idx], osPtr->methods[idx] ? ObjStr(osPtr->methods[idx]) : "NULL");*/ if (osPtr->methods[idx] == NULL) { continue; } Tcl_ListObjAppendElement(interp, systemMethods, Tcl_NewStringObj(Nsf_SystemMethodOpts[idx], -1)); Tcl_ListObjAppendElement(interp, systemMethods, osPtr->methods[idx]); } Tcl_ListObjAppendElement(interp, osObj, systemMethods); Tcl_ListObjAppendElement(interp, list, osObj); } Tcl_SetObjResult(interp, list); return TCL_OK; } if (configureoption == ConfigureoptionDebugIdx) { int level; if (valueObj) { int result = Tcl_GetIntFromObj(interp, valueObj, &level); if (result != TCL_OK) { return result; } RUNTIME_STATE(interp)->debugLevel = level; } Tcl_SetIntObj(Tcl_GetObjResult(interp), RUNTIME_STATE(interp)->debugLevel); return TCL_OK; } /* * All other configure options are boolean. */ if (valueObj) { int result = Tcl_GetBooleanFromObj(interp, valueObj, &bool); if (result != TCL_OK) { return result; } } switch (configureoption) { case ConfigureoptionFilterIdx: Tcl_SetBooleanObj(Tcl_GetObjResult(interp), (RUNTIME_STATE(interp)->doFilters)); if (valueObj) { RUNTIME_STATE(interp)->doFilters = bool; } break; case ConfigureoptionProfileIdx: Tcl_SetBooleanObj(Tcl_GetObjResult(interp), (RUNTIME_STATE(interp)->doProfile)); if (valueObj) { #if defined(NSF_PROFILE) RUNTIME_STATE(interp)->doProfile = bool; #else NsfLog(interp, NSF_LOG_WARN, "No profile support compiled in"); #endif } break; case ConfigureoptionSoftrecreateIdx: Tcl_SetBooleanObj(Tcl_GetObjResult(interp), (RUNTIME_STATE(interp)->doSoftrecreate)); if (valueObj) { RUNTIME_STATE(interp)->doSoftrecreate = bool; } break; case ConfigureoptionKeepcmdsIdx: Tcl_SetBooleanObj(Tcl_GetObjResult(interp), (RUNTIME_STATE(interp)->doKeepcmds)); if (valueObj) { RUNTIME_STATE(interp)->doKeepcmds = bool; } break; case ConfigureoptionCheckresultsIdx: Tcl_SetBooleanObj(Tcl_GetObjResult(interp), (RUNTIME_STATE(interp)->doCheckResults)); if (valueObj) { RUNTIME_STATE(interp)->doCheckResults = bool; } break; case ConfigureoptionCheckargumentsIdx: Tcl_SetBooleanObj(Tcl_GetObjResult(interp), (RUNTIME_STATE(interp)->doCheckArguments) != 0); if (valueObj) { RUNTIME_STATE(interp)->doCheckArguments = bool ? NSF_ARGPARSE_CHECK : 0; } break; } return TCL_OK; } /* cmd colon NsfColonCmd { {-argName "args" -type allargs} } */ static int NsfColonCmd(Tcl_Interp *interp, int nobjc, Tcl_Obj *CONST nobjv[]) { CONST char *methodName = ObjStr(nobjv[0]); NsfObject *self = GetSelfObj(interp); if (unlikely(self == NULL)) { return NsfNoCurrentObjectError(interp, methodName); } /*fprintf(stderr, "Colon dispatch %s.%s (%d)\n", ObjectName(self), ObjStr(nobjv[0]), nobjc);*/ if (likely(!(*methodName == ':' && *(methodName + 1) == '\0'))) { return ObjectDispatch(self, interp, nobjc, nobjv, NSF_CM_NO_SHIFT); } /* * First arg is a single colon. */ if (nobjc <= 1) { Tcl_SetObjResult(interp, self->cmdName); return TCL_OK; } /* * Multiple arguments were given. */ methodName = ObjStr(nobjv[1]); if (*methodName != '-') { /* * No need to parse arguments (local, intrinsic, ...). */ return ObjectDispatch(self, interp, nobjc, nobjv, 0); } else { ParseContext pc; int withIntrinsic, withLocal, withSystem, flags; Tcl_Obj *methodObj; /* * Parse arguments, use definitions from nsf::my */ if (ArgumentParse(interp, nobjc, nobjv, NULL, nobjv[0], method_definitions[NsfMyCmdIdx].paramDefs, method_definitions[NsfMyCmdIdx].nrParameters, 0, NSF_ARGPARSE_BUILTIN, &pc) != TCL_OK) { return TCL_ERROR; } withIntrinsic = (int )PTR2INT(pc.clientData[0]); withLocal = (int )PTR2INT(pc.clientData[1]); withSystem = (int )PTR2INT(pc.clientData[2]); methodObj = (Tcl_Obj *)pc.clientData[3]; assert(pc.status == 0); if ((withIntrinsic && withLocal) || (withIntrinsic && withSystem) || (withLocal && withSystem)) { return NsfPrintError(interp, "flags '-intrinsic', '-local' and '-system' are mutual exclusive"); } flags = NSF_CSC_IMMEDIATE; if (withIntrinsic) {flags |= NSF_CM_INTRINSIC_METHOD;} if (withLocal) {flags |= NSF_CM_LOCAL_METHOD;} if (withSystem) {flags |= NSF_CM_SYSTEM_METHOD;} return CallMethod(self, interp, methodObj, (nobjc-pc.lastObjc)+2, nobjv+pc.lastObjc, flags); } } /* cmd "directdispatch" NsfDirectDispatchCmd { {-argName "object" -required 1 -type object} {-argName "-frame" -required 0 -nrargs 1 -type "method|object|default" -default "default"} {-argName "command" -required 1 -type tclobj} {-argName "args" -type args} } */ static int NsfDirectDispatchCmd(Tcl_Interp *interp, NsfObject *object, int withFrame, Tcl_Obj *commandObj, int nobjc, Tcl_Obj *CONST nobjv[]) { int result; CONST char *methodName = ObjStr(commandObj); Tcl_Command cmd, importedCmd; CallFrame frame, *framePtr = &frame; Tcl_ObjCmdProc *proc; int flags = 0; int useCmdDispatch = 1; /*fprintf(stderr, "NsfDirectDispatchCmd obj=%s, cmd m='%s'\n", ObjectName(object), methodName);*/ if (unlikely(*methodName != ':')) { return NsfPrintError(interp, "method name '%s' must be fully qualified", methodName); } /* * We have a fully qualified name of a Tcl command that will be dispatched. */ cmd = Tcl_GetCommandFromObj(interp, commandObj); if (likely(cmd != NULL)) { importedCmd = TclGetOriginalCommand(cmd); if (unlikely(importedCmd != NULL)) { cmd = importedCmd; } } if (unlikely(cmd == NULL)) { return NsfPrintError(interp, "cannot lookup command '%s'", methodName); } proc = Tcl_Command_objProc(cmd); if (proc == TclObjInterpProc || proc == NsfForwardMethod || proc == NsfObjscopedMethod || proc == NsfSetterMethod || CmdIsNsfObject(cmd)) { if (withFrame && withFrame != FrameDefaultIdx) { return NsfPrintError(interp, "cannot use -frame object|method in dispatch for command '%s'", methodName); } useCmdDispatch = 0; } else { if (unlikely(withFrame == FrameMethodIdx)) { useCmdDispatch = 0; } else { useCmdDispatch = 1; } } /* * If "withFrame == FrameObjectIdx" is specified, a call-stack frame is * pushed to make instance variables accessible for the command. */ if (unlikely(withFrame == FrameObjectIdx)) { Nsf_PushFrameObj(interp, object, framePtr); flags = NSF_CSC_IMMEDIATE; } /* * Since we know, that we are always called with a full argument * vector, we can include the cmd name in the objv by using * nobjv-1; this way, we avoid a memcpy(). */ if (useCmdDispatch) { if (NSF_DTRACE_METHOD_ENTRY_ENABLED()) { NSF_DTRACE_METHOD_ENTRY(ObjectName(object), "", (char *)methodName, nobjc, (Tcl_Obj **)nobjv); } result = CmdMethodDispatch(object, interp, nobjc+1, nobjv-1, object, cmd, NULL); } else { /* * If "withFrame == FrameMethodIdx" is specified, a call-stack frame is * pushed to make instance variables accessible for the command. */ if (unlikely(withFrame == FrameMethodIdx)) { flags = NSF_CSC_FORCE_FRAME|NSF_CSC_IMMEDIATE; } result = MethodDispatch(object, interp, nobjc+1, nobjv-1, cmd, object, NULL /*NsfClass *cl*/, Tcl_GetCommandName(interp, cmd), NSF_CSC_TYPE_PLAIN, flags); } if (unlikely(withFrame == FrameObjectIdx)) { Nsf_PopFrameObj(interp, framePtr); } return result; } /* cmd "dispatch" NsfDispatchCmd { {-argName "object" -required 1 -type object} {-argName "-intrinsic" -required 0 -nrargs 0} {-argName "-system" -required 0 -nrargs 0} {-argName "command" -required 1 -type tclobj} {-argName "args" -type args} } */ static int NsfDispatchCmd(Tcl_Interp *interp, NsfObject *object, int withIntrinsic, int withSystem, Tcl_Obj *commandObj, int nobjc, Tcl_Obj *CONST nobjv[]) { int flags = NSF_CM_NO_UNKNOWN|NSF_CSC_IMMEDIATE|NSF_CM_IGNORE_PERMISSIONS|NSF_CM_NO_SHIFT; /*fprintf(stderr, "NsfDispatchCmd obj=%s, cmd m='%s' nobjc %d\n", ObjectName(object), ObjStr(commandObj), nobjc);*/ if (unlikely(withIntrinsic && withSystem)) { return NsfPrintError(interp, "flags '-intrinsic' and '-system' are mutual exclusive"); } /* * Dispatch the command the method from the precedence order, with filters * etc. -- strictly speaking unnecessary, but this function can be used to * call protected methods and provide the flags '-intrinsics' and '-system'. */ if (withIntrinsic) {flags |= NSF_CM_INTRINSIC_METHOD;} if (withSystem) {flags |= NSF_CM_SYSTEM_METHOD;} /* * Since we know, that we are always called with a full argument * vector, we can include the cmd name in the objv by using * nobjv-1; this way, we avoid a memcpy(). */ return ObjectDispatch(object, interp, nobjc+1, nobjv-1, flags); } /* cmd finalize NsfFinalizeCmd { {-argName "-keepvars" -required 0 -nrargs 0} } */ static int NsfFinalizeCmd(Tcl_Interp *interp, int withKeepvars) { int result; #if defined(NSF_STACKCHECK) {NsfRuntimeState *rst = RUNTIME_STATE(interp); NsfLog(interp, NSF_LOG_WARN, "Stack max usage %ld", labs(rst->maxStack - rst->bottomOfStack)); } #endif /*fprintf(stderr, "+++ call tcl-defined exit handler\n"); */ /* * Evaluate user-defined exit handler. */ result = Tcl_Eval(interp, "::nsf::__exithandler"); if (result != TCL_OK) { fprintf(stderr, "User defined exit handler contains errors!\n" "Error in line %d: %s\nExecution interrupted.\n", Tcl_GetErrorLine(interp), ObjStr(Tcl_GetObjResult(interp))); } ObjectSystemsCleanup(interp, withKeepvars); #ifdef DO_CLEANUP { NsfRuntimeState *rst = RUNTIME_STATE(interp); # if defined(CHECK_ACTIVATION_COUNTS) assert(rst->cscList == NULL); # endif /*fprintf(stderr, "CLEANUP TOP NS\n");*/ Tcl_Export(interp, rst->NsfNS, "", 1); if (rst->NsfClassesNS) { MEM_COUNT_FREE("TclNamespace",rst->NsfClassesNS); Tcl_DeleteNamespace(rst->NsfClassesNS); } if (rst->NsfNS) { MEM_COUNT_FREE("TclNamespace",rst->NsfNS); Tcl_DeleteNamespace(rst->NsfNS); } } #endif return TCL_OK; } /* cmd interp NsfInterpObjCmd { {-argName "name"} {-argName "args" -type allargs} } */ /* create a slave interp that calls Next Scripting Init */ static int NsfInterpObjCmd(Tcl_Interp *interp, CONST char *name, int objc, Tcl_Obj *CONST objv[]) { /* create a fresh Tcl interpreter, or pass command to an existing one */ if (NsfCallCommand(interp, NSF_INTERP, objc, objv) != TCL_OK) { return TCL_ERROR; } if (isCreateString(name)) { /* * The command was an interp create, so perform an Nsf_Init() on * the new interpreter. */ Tcl_Interp *slave = Tcl_GetSlave(interp, ObjStr(objv[2])); if (!slave) { return NsfPrintError(interp, "creation of slave interpreter failed"); } if (Nsf_Init(slave) == TCL_ERROR) { return TCL_ERROR; } } return TCL_OK; } /* cmd is NsfIsCmd { {-argName "-complain" -nrargs 0} {-argName "-configure" -nrargs 0} {-argName "-name" -required 0} {-argName "constraint" -required 1 -type tclobj} {-argName "value" -required 1 -type tclobj} } {-nxdoc 1} */ static int NsfIsCmd(Tcl_Interp *interp, int withComplain, int doConfigureParameter, CONST char *name, Tcl_Obj *constraintObj, Tcl_Obj *valueObj) { Nsf_Param *paramPtr = NULL; int result; result = ParameterCheck(interp, constraintObj, valueObj, name ? name : "value:", 1, (name != NULL), doConfigureParameter, ¶mPtr); if (paramPtr == NULL) { /* * We could not convert the arguments. Even with noComplain, we * report the invalid converter spec as exception. */ return TCL_ERROR; } if (paramPtr->converter == ConvertViaCmd && (withComplain == 0 || result == TCL_OK)) { Tcl_ResetResult(interp); } if (withComplain == 0) { Tcl_SetIntObj(Tcl_GetObjResult(interp), (result == TCL_OK)); result = TCL_OK; } else if (result == TCL_OK) { Tcl_SetIntObj(Tcl_GetObjResult(interp), 1); } return result; } /* cmd method::alias NsfMethodAliasCmd { {-argName "object" -type object} {-argName "-per-object"} {-argName "methodName"} {-argName "-frame" -required 0 -nrargs 1 -type "method|object|default" -default "default"} {-argName "cmdName" -required 1 -type tclobj} } */ static int NsfMethodAliasCmd(Tcl_Interp *interp, NsfObject *object, int withPer_object, CONST char *methodName, int withFrame, Tcl_Obj *cmdName) { Tcl_ObjCmdProc *objProc, *newObjProc = NULL; Tcl_CmdDeleteProc *deleteProc = NULL; AliasCmdClientData *tcd = NULL; /* make compiler happy */ Tcl_Command cmd, oldCmd, newCmd = NULL; Tcl_Namespace *nsPtr; int flags, result; NsfClass *cl = (withPer_object || ! NsfObjectIsClass(object)) ? NULL : (NsfClass *)object; NsfObject *oldTargetObject, *newTargetObject; assert(methodName && *methodName != ':'); cmd = Tcl_GetCommandFromObj(interp, cmdName); if (cmd == NULL) { return NsfPrintError(interp, "cannot lookup command '%s'", ObjStr(cmdName)); } cmd = GetOriginalCommand(cmd); objProc = Tcl_Command_objProc(cmd); assert(objProc); /* objProc is either ... * * 1. NsfObjDispatch: a command representing an Next Scripting object * * 2. TclObjInterpProc: a cmd standing for a Tcl proc (including * Next Scripting methods), verified through CmdIsProc() -> to be * wrapped by NsfProcAliasMethod() * * 3. NsfForwardMethod: an Next Scripting forwarder * * 4. NsfSetterMethod: an Next Scripting setter * * 5. arbitrary Tcl commands (e.g. set, ..., ::nsf::relation, ...) * */ if (withFrame == FrameObjectIdx) { newObjProc = NsfObjscopedMethod; } /* * We need to perform a defensive lookup of a previously defined * object-alias under the given methodName. */ nsPtr = cl ? cl->nsPtr : object->nsPtr; oldCmd = nsPtr ? FindMethod(nsPtr, methodName) : NULL; newTargetObject = NsfGetObjectFromCmdPtr(cmd); if (oldCmd != NULL) { oldTargetObject = NsfGetObjectFromCmdPtr(oldCmd); /* fprintf(stderr, "oldTargetObject %p flags %.6x newTargetObject %p\n", oldTargetObject, oldTargetObject ? oldTargetObject->flags : 0, newTargetObject);*/ /* * We might have to decrement the reference counter on an previously * aliased object. Decrement the reference count to the old aliased object * only, when it is different to the new target Object. */ if (oldTargetObject != NULL && oldTargetObject != newTargetObject) { /*fprintf(stderr, "--- releasing old target object %p refCount %d\n", oldTargetObject, oldTargetObject->refCount);*/ assert(oldTargetObject->refCount > 0); AliasDeleteObjectReference(interp, oldCmd); } } else { oldTargetObject = NULL; } if (newTargetObject) { /* * We set now for every alias to an object a stub proc, such we can * distinguish between cases, where the user wants to create a method, and * between cases, where object-invocation via method interface might * happen. */ newObjProc = NsfProcAliasMethod; } else if (CmdIsProc(cmd)) { /* * When we have a Tcl proc|nsf-method as alias, then use the * wrapper, which will be deleted automatically when the original * proc/method is deleted. */ newObjProc = NsfProcAliasMethod; if (objProc == TclObjInterpProc) { /* * We have an alias to a tcl proc; */ Proc *procPtr = (Proc *)Tcl_Command_objClientData(cmd); Tcl_Obj *bodyObj = procPtr ? procPtr->bodyPtr : NULL; if (bodyObj && bodyObj->typePtr == Nsf_OT_byteCodeType) { /* * Flush old byte code */ /*fprintf(stderr, "flush byte code\n");*/ bodyObj->typePtr->freeIntRepProc(bodyObj); } } if (withFrame && withFrame != FrameDefaultIdx) { return NsfPrintError(interp, "cannot use -frame object|method in alias for scripted command '%s'", ObjStr(cmdName)); } } if (newObjProc) { /* add a wrapper */ /*fprintf(stderr, "NsfMethodAliasCmd add wrapper cmd %p\n", cmd);*/ NsfCommandPreserve(cmd); tcd = NEW(AliasCmdClientData); tcd->cmdName = object->cmdName; tcd->interp = interp; /* just for deleting the alias */ tcd->object = NULL; tcd->class = cl ? (NsfClass *) object : NULL; tcd->objProc = objProc; tcd->aliasedCmd = cmd; tcd->clientData = Tcl_Command_objClientData(cmd); objProc = newObjProc; deleteProc = AliasCmdDeleteProc; if (tcd->cmdName) {INCR_REF_COUNT(tcd->cmdName);} } else { /* * Call the command directly (must be a c-implemented command not * depending on a volatile client data) */ tcd = Tcl_Command_objClientData(cmd); /*fprintf(stderr, "NsfMethodAliasCmd no wrapper cmd %p\n", cmd);*/ } flags = 0; if (cl) { result = NsfAddClassMethod(interp, (Nsf_Class *)cl, methodName, objProc, tcd, deleteProc, flags); nsPtr = cl->nsPtr; } else { result = NsfAddObjectMethod(interp, (Nsf_Object *)object, methodName, objProc, tcd, deleteProc, flags); nsPtr = object->nsPtr; } if (result == TCL_OK) { newCmd = FindMethod(nsPtr, methodName); } #if defined(WITH_IMPORT_REFS) if (newObjProc) { /* * Define the reference chain like for 'namespace import' to * obtain automatic deletes when the original command is deleted. */ ImportRef *refPtr = (ImportRef *) ckalloc(sizeof(ImportRef)); refPtr->importedCmdPtr = (Command *) newCmd; refPtr->nextPtr = ((Command *) tcd->aliasedCmd)->importRefPtr; ((Command *) tcd->aliasedCmd)->importRefPtr = refPtr; tcd->aliasCmd = newCmd; } #else if (newObjProc) { tcd->aliasCmd = newCmd; } #endif if (newCmd) { AliasAdd(interp, object->cmdName, methodName, cl == NULL, ObjStr(cmdName)); if (withFrame == FrameMethodIdx) { Tcl_Command_flags(newCmd) |= NSF_CMD_NONLEAF_METHOD; /*fprintf(stderr, "setting aliased for cmd %p %s flags %.6x, tcd = %p\n", newCmd, methodName, Tcl_Command_flags(newCmd), tcd);*/ } Tcl_SetObjResult(interp, MethodHandleObj(object, cl == NULL, methodName)); result = TCL_OK; } return result; } /* cmd method::assertion NsfMethodAssertionCmd { {-argName "object" -type object} {-argName "assertionsubcmd" -required 1 -type "check|object-invar|class-invar"} {-argName "arg" -required 0 -type tclobj} } Make "::nsf::assertion" a cmd rather than a method, otherwise we cannot define e.g. a "method check options {...}" to reset the check options in case of a failed option, since assertion checking would be applied on the sketched method already. */ static int NsfMethodAssertionCmd(Tcl_Interp *interp, NsfObject *object, int subcmd, Tcl_Obj *arg) { #if defined(NSF_WITH_ASSERTIONS) NsfClass *class; switch (subcmd) { case AssertionsubcmdCheckIdx: if (arg) { return AssertionSetCheckOptions(interp, object, arg); } else { return AssertionListCheckOption(interp, object); } break; case AssertionsubcmdObject_invarIdx: if (arg) { NsfObjectOpt *opt = NsfRequireObjectOpt(object); AssertionSetInvariants(interp, &opt->assertions, arg); } else { if (object->opt && object->opt->assertions) { Tcl_SetObjResult(interp, AssertionList(interp, object->opt->assertions->invariants)); } } break; case AssertionsubcmdClass_invarIdx: class = (NsfClass *)object; if (arg) { NsfClassOpt *opt = NsfRequireClassOpt(class); AssertionSetInvariants(interp, &opt->assertions, arg); } else { if (class->opt && class->opt->assertions) { Tcl_SetObjResult(interp, AssertionList(interp, class->opt->assertions->invariants)); } } } #endif return TCL_OK; } /* cmd method::create NsfMethodCreateCmd { {-argName "object" -required 1 -type object} {-argName "-inner-namespace"} {-argName "-per-object"} {-argName "-reg-object" -required 0 -nrargs 1 -type object} {-argName "name" -required 1 -type tclobj} {-argName "arguments" -required 1 -type tclobj} {-argName "body" -required 1 -type tclobj} {-argName "-precondition" -nrargs 1 -type tclobj} {-argName "-postcondition" -nrargs 1 -type tclobj} } */ static int NsfMethodCreateCmd(Tcl_Interp *interp, NsfObject *defObject, int withInner_namespace, int withPer_object, NsfObject *regObject, Tcl_Obj *nameObj, Tcl_Obj *arguments, Tcl_Obj *body, Tcl_Obj *withPrecondition, Tcl_Obj *withPostcondition) { NsfClass *cl = (withPer_object || ! NsfObjectIsClass(defObject)) ? NULL : (NsfClass *)defObject; if (cl == 0) { RequireObjNamespace(interp, defObject); } return MakeMethod(interp, defObject, regObject, cl, nameObj, arguments, body, withPrecondition, withPostcondition, withInner_namespace); } /* cmd "method::delete" NsfMethodDeleteCmd { {-argName "object" -required 1 -type object} {-argName "-per-object"} {-argName "methodName" -required 1 -type tclobj} } */ static int NsfMethodDeleteCmd(Tcl_Interp *interp, NsfObject *object, int withPer_object, Tcl_Obj *methodNameObj) { NsfObject *regObject, *defObject; CONST char *methodName1 = NULL; NsfClass *cl = withPer_object == 0 && NsfObjectIsClass(object) ? (NsfClass *)object : NULL; int fromClassNS = cl != NULL, result; Tcl_DString ds, *dsPtr = &ds; Tcl_Command cmd; Tcl_DStringInit(dsPtr); cmd = ResolveMethodName(interp, cl ? cl->nsPtr : object->nsPtr, methodNameObj, dsPtr, ®Object, &defObject, &methodName1, &fromClassNS); /*fprintf(stderr, "NsfMethodDeleteCmd method %s '%s' object %p regObject %p defObject %p cl %p fromClass %d cmd %p\n", ObjStr(methodNameObj), methodName1, object, regObject, defObject, cl, fromClassNS, cmd);*/ if (cmd) { methodName1 = Tcl_GetCommandName(interp, cmd); if (defObject) { cl = withPer_object == 0 && NsfObjectIsClass(defObject) ? (NsfClass *)defObject : NULL; } else { defObject = object; } if (RUNTIME_STATE(interp)->exitHandlerDestroyRound == NSF_EXITHANDLER_OFF) { result = cl ? NsfRemoveClassMethod(interp, (Nsf_Class *)defObject, methodName1) : NsfRemoveObjectMethod(interp, (Nsf_Object *)defObject, methodName1); } else { result = TCL_OK; } } else { result = NsfPrintError(interp, "%s: %s method '%s' does not exist", ObjectName(object), withPer_object ? "object specific" : "instance", ObjStr(methodNameObj)); } Tcl_DStringFree(dsPtr); return result; } /* cmd method::forward NsfMethodForwardCmd { {-argName "object" -required 1 -type object} {-argName "-per-object"} {-argName "method" -required 1 -type tclobj} {-argName "-default" -nrargs 1 -type tclobj} {-argName "-earlybinding"} {-argName "-methodprefix" -nrargs 1 -type tclobj} {-argName "-objframe"} {-argName "-onerror" -nrargs 1 -type tclobj} {-argName "-verbose"} {-argName "target" -type tclobj} {-argName "args" -type args} } */ static int NsfMethodForwardCmd(Tcl_Interp *interp, NsfObject *object, int withPer_object, Tcl_Obj *methodObj, Tcl_Obj *withDefault, int withEarlybinding, Tcl_Obj *withMethodprefix, int withObjframe, Tcl_Obj *withOnerror, int withVerbose, Tcl_Obj *target, int nobjc, Tcl_Obj *CONST nobjv[]) { ForwardCmdClientData *tcd = NULL; int result; result = ForwardProcessOptions(interp, methodObj, withDefault, withEarlybinding, withMethodprefix, withObjframe, withOnerror, withVerbose, target, nobjc, nobjv, &tcd); if (result == TCL_OK) { CONST char *methodName = NSTail(ObjStr(methodObj)); NsfClass *cl = (withPer_object || ! NsfObjectIsClass(object)) ? NULL : (NsfClass *)object; tcd->object = object; if (cl == NULL) { result = NsfAddObjectMethod(interp, (Nsf_Object *)object, methodName, (Tcl_ObjCmdProc *)NsfForwardMethod, tcd, ForwardCmdDeleteProc, 0); } else { result = NsfAddClassMethod(interp, (Nsf_Class *)cl, methodName, (Tcl_ObjCmdProc *)NsfForwardMethod, tcd, ForwardCmdDeleteProc, 0); } if (result == TCL_OK) { Tcl_SetObjResult(interp, MethodHandleObj(object, withPer_object, methodName)); } } if (result != TCL_OK && tcd) { ForwardCmdDeleteProc(tcd); } return result; } /* cmd ::method::property NsfMethodPropertyCmd { {-argName "object" -required 1 -type object} {-argName "-per-object"} {-argName "methodName" -required 1 -type tclobj} {-argName "methodproperty" -required 1 -type "class-only|call-private|call-protected|redefine-protected|returns|slotobj"} {-argName "value" -type tclobj} } */ static int NsfMethodPropertyCmd(Tcl_Interp *interp, NsfObject *object, int withPer_object, Tcl_Obj *methodObj, int methodproperty, Tcl_Obj *valueObj) { CONST char *methodName = ObjStr(methodObj); NsfObject *defObject; Tcl_Command cmd; NsfClass *cl = withPer_object == 0 && NsfObjectIsClass(object) ? (NsfClass *)object : NULL; int flag, fromClassNS = cl != NULL; cmd = ResolveMethodName(interp, cl ? cl->nsPtr : object->nsPtr, methodObj, NULL, NULL, &defObject, NULL, &fromClassNS); /*fprintf(stderr, "methodProperty for method '%s' prop %d value %s => cl %p cmd %p\n", methodName, methodproperty, valueObj ? ObjStr(valueObj) : "NULL", cl, cmd);*/ if (unlikely(cmd == NULL)) { return NsfPrintError(interp, "cannot lookup %s method '%s' for %s", cl == 0 ? "object " : "", methodName, ObjectName(object)); } switch (methodproperty) { case MethodpropertyClass_onlyIdx: /* fall through */ case MethodpropertyCall_privateIdx: /* fall through */ case MethodpropertyCall_protectedIdx: /* fall through */ case MethodpropertyRedefine_protectedIdx: /* fall through */ { int impliedSetFlag = 0, impliedClearFlag = 0; switch (methodproperty) { case MethodpropertyClass_onlyIdx: flag = NSF_CMD_CLASS_ONLY_METHOD; break; case MethodpropertyCall_privateIdx: flag = NSF_CMD_CALL_PRIVATE_METHOD; impliedSetFlag = NSF_CMD_CALL_PROTECTED_METHOD; break; case MethodpropertyCall_protectedIdx: impliedClearFlag = NSF_CMD_CALL_PRIVATE_METHOD; flag = NSF_CMD_CALL_PROTECTED_METHOD; break; case MethodpropertyRedefine_protectedIdx: flag = NSF_CMD_REDEFINE_PROTECTED_METHOD; break; default: flag = 0; } if (valueObj) { int bool, result; result = Tcl_GetBooleanFromObj(interp, valueObj, &bool); if (unlikely(result != TCL_OK)) { return result; } if (bool) { /* * set flag */ Tcl_Command_flags(cmd) |= flag; if (impliedSetFlag) { Tcl_Command_flags(cmd) |= impliedSetFlag; } } else { /* * clear flag */ Tcl_Command_flags(cmd) &= ~flag; if (impliedClearFlag) { Tcl_Command_flags(cmd) &= ~impliedClearFlag; } } if (cl) { NsfInstanceMethodEpochIncr("Permissions"); } else { NsfObjectMethodEpochIncr("Permissions"); } } Tcl_SetIntObj(Tcl_GetObjResult(interp), (Tcl_Command_flags(cmd) & flag) != 0); break; } case MethodpropertySlotobjIdx: case MethodpropertyReturnsIdx: { NsfParamDefs *paramDefs; Tcl_Obj **objPtr; if (valueObj == NULL && methodproperty == MethodpropertySlotobjIdx) { return NsfPrintError(interp, "option 'slotobj' of method '%s' requires argument", methodName); } paramDefs = ParamDefsGet(cmd); /*fprintf(stderr, "MethodProperty, ParamDefsGet cmd %p paramDefs %p returns %p\n", cmd, paramDefs, paramDefs?paramDefs->returns:NULL);*/ if (valueObj == NULL) { /* a query for "returns" or "slotobj" */ Tcl_Obj *resultObj; if (paramDefs == NULL) { resultObj = NsfGlobalObjs[NSF_EMPTY]; } else { objPtr = methodproperty == MethodpropertySlotobjIdx ? ¶mDefs->slotObj : ¶mDefs->returns; resultObj = *objPtr ? *objPtr : NsfGlobalObjs[NSF_EMPTY]; } Tcl_SetObjResult(interp, resultObj); } else { /* setting "returns" or "slotobj" */ const char *valueString = ObjStr(valueObj); if (paramDefs == NULL) { /* acquire new paramDefs */ paramDefs = ParamDefsNew(); ParamDefsStore(cmd, paramDefs); /*fprintf(stderr, "new param definitions %p for cmd %p %s\n", paramDefs, cmd, methodName);*/ } objPtr = methodproperty == MethodpropertySlotobjIdx ? ¶mDefs->slotObj : ¶mDefs->returns; /* Set a new value; if there is already a value, free it */ if (*objPtr) { DECR_REF_COUNT2("paramDefsObj", *objPtr); } if (*valueString == '\0') { /* set the value to NULL */ *objPtr = NULL; } else { *objPtr = valueObj; INCR_REF_COUNT2("paramDefsObj", *objPtr); } } break; } } return TCL_OK; } /* cmd "method::registered" NsfMethodRegisteredCmd { {-argName "handle" -required 1 -type tclobj} } */ static int NsfMethodRegisteredCmd(Tcl_Interp *interp, Tcl_Obj *methodNameObj) { NsfObject *regObject; int fromClassNS = 0; Tcl_Command cmd; cmd = ResolveMethodName(interp, NULL, methodNameObj, NULL, ®Object, NULL, NULL, &fromClassNS); /* * In case the provided cmd is fully qualified and refers to a registered * method, the function returns the object, on which the method was * resisted. */ Tcl_SetObjResult(interp, (cmd && regObject) ? regObject->cmdName : NsfGlobalObjs[NSF_EMPTY]); return TCL_OK; } /* cmd method::setter NsfMethodSetterCmd { {-argName "object" -required 1 -type object} {-argName "-per-object"} {-argName "parameter" -type tclobj} } */ static int NsfMethodSetterCmd(Tcl_Interp *interp, NsfObject *object, int withPer_object, Tcl_Obj *parameter) { NsfClass *cl = (withPer_object || ! NsfObjectIsClass(object)) ? NULL : (NsfClass *)object; CONST char *methodName = ObjStr(parameter); SetterCmdClientData *setterClientData; size_t j, length; int result; if (unlikely(*methodName == '-' || *methodName == ':')) { return NsfPrintError(interp, "invalid setter name \"%s\" (must not start with a dash or colon)", methodName); } setterClientData = NEW(SetterCmdClientData); setterClientData->object = NULL; setterClientData->paramsPtr = NULL; length = strlen(methodName); for (j=0; jparamsPtr = ParamsNew(1); result = ParamParse(interp, NsfGlobalObjs[NSF_SETTER], parameter, NSF_DISALLOWED_ARG_SETTER|NSF_ARG_HAS_DEFAULT, setterClientData->paramsPtr, &possibleUnknowns, &plainParams, &nrNonposArgs); if (result != TCL_OK) { SetterCmdDeleteProc(setterClientData); return result; } methodName = setterClientData->paramsPtr->name; } else { setterClientData->paramsPtr = NULL; } if (cl) { result = NsfAddClassMethod(interp, (Nsf_Class *)cl, methodName, (Tcl_ObjCmdProc *)NsfSetterMethod, setterClientData, SetterCmdDeleteProc, 0); } else { result = NsfAddObjectMethod(interp, (Nsf_Object *)object, methodName, (Tcl_ObjCmdProc *)NsfSetterMethod, setterClientData, SetterCmdDeleteProc, 0); } if (result == TCL_OK) { Tcl_SetObjResult(interp, MethodHandleObj(object, cl == NULL, methodName)); } else { SetterCmdDeleteProc(setterClientData); } return result; } /* cmd "object::exists" NsfObjectExistsCmd { {-argName "value" -required 1 -type tclobj} } */ static int NsfObjectExistsCmd(Tcl_Interp *interp, Tcl_Obj *valueObj) { NsfObject *object; /* * Pass the object as Tcl_Obj, since we do not want to raise an error in * case the object does not exist. */ Tcl_SetBooleanObj(Tcl_GetObjResult(interp), GetObjectFromObj(interp, valueObj, &object) == TCL_OK); return TCL_OK; } /* cmd "object::property" NsfObjectPropertyCmd { {-argName "objectName" -required 1 -type object} {-argName "objectproperty" -type "initialized|class|rootmetaclass|rootclass|volatile|slotcontainer|hasperobjectslots|keepcallerself|perobjectdispatch" -required 1} {-argName "value" -required 0 -type tclobj} } */ static int NsfObjectPropertyCmd(Tcl_Interp *interp, NsfObject *object, int objectproperty, Tcl_Obj *valueObj) { int flags = 0, allowSet = 0; switch (objectproperty) { case ObjectpropertyInitializedIdx: flags = NSF_INIT_CALLED; break; case ObjectpropertyClassIdx: flags = NSF_IS_CLASS; break; case ObjectpropertyRootmetaclassIdx: flags = NSF_IS_ROOT_META_CLASS; break; case ObjectpropertyVolatileIdx: if (!valueObj) { Tcl_SetObjResult(interp, NsfGlobalObjs[object->opt && object->opt->volatileVarName ? NSF_ONE : NSF_ZERO]); return TCL_OK; }; /* if value is provided, return the error below */ break; case ObjectpropertyRootclassIdx: flags = NSF_IS_ROOT_CLASS; break; case ObjectpropertySlotcontainerIdx: flags = NSF_IS_SLOT_CONTAINER; allowSet = 1; break; case ObjectpropertyKeepcallerselfIdx: flags = NSF_KEEP_CALLER_SELF; allowSet = 1; break; case ObjectpropertyPerobjectdispatchIdx: flags = NSF_PER_OBJECT_DISPATCH; allowSet = 1; break; case ObjectpropertyHasperobjectslotsIdx: flags = NSF_HAS_PER_OBJECT_SLOTS; allowSet = 1; break; } if (valueObj) { if (likely(allowSet)) { int flagValue, result; result = SetBooleanFlag(interp, &object->flags, flags, valueObj, &flagValue); if (unlikely(result != TCL_OK)) { return result; } if (objectproperty == ObjectpropertySlotcontainerIdx) { assert(object->nsPtr); if (flagValue) { /* turn on SlotContainerCmdResolver */ Tcl_SetNamespaceResolvers(object->nsPtr, (Tcl_ResolveCmdProc *)SlotContainerCmdResolver, NsColonVarResolver, (Tcl_ResolveCompiledVarProc *)NULL); } else { /* turn off SlotContainerCmdResolver */ Tcl_SetNamespaceResolvers(object->nsPtr, (Tcl_ResolveCmdProc *)NULL, NsColonVarResolver, (Tcl_ResolveCompiledVarProc *)NULL); } } } else { return NsfPrintError(interp, "object property is read only"); } } Tcl_SetObjResult(interp, NsfGlobalObjs[(object->flags & flags) ? NSF_ONE : NSF_ZERO]); return TCL_OK; } /* cmd "object::qualify" NsfObjectQualifyCmd { {-argName "objectName" -required 1 -type tclobj} } */ static int NsfObjectQualifyCmd(Tcl_Interp *interp, Tcl_Obj *nameObj) { CONST char *nameString = ObjStr(nameObj); if (isAbsolutePath(nameString)) { Tcl_SetObjResult(interp, nameObj); } else { Tcl_SetObjResult(interp, NameInNamespaceObj(interp, nameString, CallingNameSpace(interp))); } return TCL_OK; } /* cmd "objectsystem::create" NsfObjectSystemCreateCmd { {-argName "rootClass" -required 1 -type tclobj} {-argName "rootMetaClass" -required 1 -type tclobj} {-argName "systemMethods" -required 0 -type tclobj} } */ static int NsfObjectSystemCreateCmd(Tcl_Interp *interp, Tcl_Obj *Object, Tcl_Obj *Class, Tcl_Obj *systemMethodsObj) { NsfClass *theobj = NULL, *thecls = NULL; Tcl_Obj *object, *class; char *objectName = ObjStr(Object); char *className = ObjStr(Class); NsfObjectSystem *osPtr = NEW(NsfObjectSystem); memset(osPtr, 0, sizeof(NsfObjectSystem)); object = isAbsolutePath(objectName) ? Object : NameInNamespaceObj(interp, objectName, CallingNameSpace(interp)); class = isAbsolutePath(className) ? Class : NameInNamespaceObj(interp, className, CallingNameSpace(interp)); GetClassFromObj(interp, object, &theobj, 0); GetClassFromObj(interp, class, &thecls, 0); if (theobj || thecls) { ObjectSystemFree(interp, osPtr); NsfLog(interp, NSF_LOG_WARN, "Base class '%s' exists already; ignoring definition", theobj ? objectName : className); return TCL_OK; } if (systemMethodsObj) { int oc, idx, result; Tcl_Obj **ov; if ((result = Tcl_ListObjGetElements(interp, systemMethodsObj, &oc, &ov)) == TCL_OK) { int i; if (oc % 2) { ObjectSystemFree(interp, osPtr); return NsfPrintError(interp, "system methods must be provided as pairs"); } for (i=0; i 2) { ObjectSystemFree(interp, osPtr); return NsfPrintError(interp, "invalid system method argument '%s'", ObjStr(ov[i]), ObjStr(arg)); } /*fprintf(stderr, "NsfCreateObjectSystemCmd [%d] = %p %s (max %d, given %d)\n", idx, ov[i+1], ObjStr(ov[i+1]), XO_unknown_idx, oc);*/ if (arg_oc == 1) { osPtr->methods[idx] = arg; } else { /* (arg_oc == 2) */ osPtr->methods[idx] = arg_ov[0]; osPtr->handles[idx] = arg_ov[1]; INCR_REF_COUNT(osPtr->handles[idx]); } INCR_REF_COUNT(osPtr->methods[idx]); } } else { ObjectSystemFree(interp, osPtr); return NsfPrintError(interp, "provided system methods are not a proper list"); } } /* * Create a basic object system with the basic root class Object and the * basic metaclass Class, and store them in the RUNTIME STATE if successful. */ theobj = PrimitiveCCreate(interp, object, NULL, NULL); thecls = PrimitiveCCreate(interp, class, NULL, NULL); /* fprintf(stderr, "CreateObjectSystem created base classes \n"); */ /* check whether Object and Class creation was successful */ if (!theobj || !thecls) { if (thecls) PrimitiveCDestroy(thecls); if (theobj) PrimitiveCDestroy(theobj); ObjectSystemFree(interp, osPtr); return NsfPrintError(interp, "creation of object system failed"); } theobj->osPtr = osPtr; thecls->osPtr = osPtr; osPtr->rootClass = theobj; osPtr->rootMetaClass = thecls; theobj->object.flags |= NSF_IS_ROOT_CLASS|NSF_INIT_CALLED; thecls->object.flags |= NSF_IS_ROOT_META_CLASS|NSF_INIT_CALLED; ObjectSystemAdd(interp, osPtr); AddInstance((NsfObject *)theobj, thecls); AddInstance((NsfObject *)thecls, thecls); AddSuper(thecls, theobj); if (NSF_DTRACE_OBJECT_ALLOC_ENABLED()) { NSF_DTRACE_OBJECT_ALLOC(ObjectName((NsfObject *)theobj), ClassName(((NsfObject *)theobj)->cl)); NSF_DTRACE_OBJECT_ALLOC(ObjectName((NsfObject *)thecls), ClassName(((NsfObject *)thecls)->cl)); } return TCL_OK; } /* cmd my NsfMyCmd { {-argName "-intrinsic" -nrargs 0} {-argName "-local" -nrargs 0} {-argName "-system" -nrargs 0} {-argName "method" -required 1 -type tclobj} {-argName "args" -type args} } */ static int NsfMyCmd(Tcl_Interp *interp, int withIntrinsic, int withLocal, int withSystem, Tcl_Obj *methodObj, int nobjc, Tcl_Obj *CONST nobjv[]) { NsfObject *self = GetSelfObj(interp); int flags, result; if (unlikely(self == NULL)) { return NsfNoCurrentObjectError(interp, method_definitions[NsfMyCmdIdx].methodName); } if ((withIntrinsic && withLocal) || (withIntrinsic && withSystem) || (withLocal && withSystem)) { return NsfPrintError(interp, "flags '-intrinsic', '-local' and '-system' are mutual exclusive"); } #if 0 /* TODO attempt to make "my" NRE-enabled, failed so far (crash in mixinInheritanceTest) */ NsfCallStackContent *cscPtr = CallStackGetTopFrame0(interp); if (!cscPtr || self != cscPtr->self) { flags = NSF_CSC_IMMEDIATE; } else { flags = NsfImmediateFromCallerFlags(cscPtr->flags); fprintf(stderr, "XXX MY %s.%s frame has flags %.6x -> next-flags %.6x\n", ObjectName(self), ObjStr(methodObj), cscPtr->flags, flags); } if (withIntrinsic) {flags |= NSF_CM_INTRINSIC_METHOD;} if (withLocal) {flags |= NSF_CM_LOCAL_METHOD;} if (withSystem) {flags |= NSF_CM_SYSTEM_METHOD;} result = CallMethod(self, interp, methodObj, nobjc+2, nobjv, flags); #else flags = NSF_CSC_IMMEDIATE; if (withIntrinsic) {flags |= NSF_CM_INTRINSIC_METHOD;} if (withLocal) {flags |= NSF_CM_LOCAL_METHOD;} if (withSystem) {flags |= NSF_CM_SYSTEM_METHOD;} result = CallMethod(self, interp, methodObj, nobjc+2, nobjv, flags); #endif return result; } /* *---------------------------------------------------------------------- * NsfNextCmd -- * * nsf::next calls the next shadowed method. It might get a single * argument which is used as argument vector for that method. If no * argument is provided, the argument vector of the last invocation * is used. * * Results: * Tcl return code * * Side effects: * The invoked method might produce side effects * *---------------------------------------------------------------------- */ /* cmd next NsfNextCmd { {-argName "arguments" -required 0 -type tclobj} } */ static int NsfNextCmd(Tcl_Interp *interp, Tcl_Obj *arguments) { int freeArgumentVector, oc, nobjc, result; NsfCallStackContent *cscPtr; CONST char *methodName; Tcl_Obj **nobjv, **ov; if (arguments) { /* Arguments were provided. */ int result = Tcl_ListObjGetElements(interp, arguments, &oc, &ov); if (result != TCL_OK) {return result;} } else { /* No arguments were provided. */ oc = -1; ov = NULL; } result = NextGetArguments(interp, oc, ov, &cscPtr, &methodName, &nobjc, &nobjv, &freeArgumentVector); if (result == TCL_OK) { result = NextSearchAndInvoke(interp, methodName, nobjc, nobjv, cscPtr, freeArgumentVector); } return result; } /* cmd nscopyvars NsfNSCopyVars { {-argName "fromNs" -required 1 -type tclobj} {-argName "toNs" -required 1 -type tclobj} } */ static int NsfNSCopyVarsCmd(Tcl_Interp *interp, Tcl_Obj *fromNs, Tcl_Obj *toNs) { Tcl_Namespace *fromNsPtr = NULL, *toNsPtr; Var *varPtr = NULL; Tcl_HashSearch hSrch; Tcl_HashEntry *hPtr; TclVarHashTable *varTablePtr; NsfObject *object, *destObject; CONST char *destFullName; Tcl_Obj *destFullNameObj; Tcl_CallFrame frame, *framePtr = &frame; Tcl_Obj *varNameObj = NULL; TclGetNamespaceFromObj(interp, fromNs, &fromNsPtr); if (fromNsPtr) { if (TclGetNamespaceFromObj(interp, toNs, &toNsPtr) != TCL_OK) { return NsfPrintError(interp, "CopyVars: Destination namespace %s does not exist", ObjStr(toNs)); } object = GetObjectFromString(interp, ObjStr(fromNs)); destFullName = toNsPtr->fullName; destFullNameObj = Tcl_NewStringObj(destFullName, -1); INCR_REF_COUNT(destFullNameObj); varTablePtr = Tcl_Namespace_varTablePtr(fromNsPtr); Tcl_PushCallFrame(interp, (Tcl_CallFrame *)framePtr, toNsPtr, 0); } else { NsfObject *newObject; if (GetObjectFromObj(interp, fromNs, &object) != TCL_OK) { return NsfPrintError(interp, "CopyVars: Origin object/namespace %s does not exist", ObjStr(fromNs)); } if (GetObjectFromObj(interp, toNs, &newObject) != TCL_OK) { return NsfPrintError(interp, "CopyVars: Destination object/namespace %s does not exist", ObjStr(toNs)); } varTablePtr = object->varTablePtr; destFullNameObj = newObject->cmdName; destFullName = ObjStr(destFullNameObj); } destObject = GetObjectFromString(interp, destFullName); /* copy all vars in the ns */ hPtr = varTablePtr ? Tcl_FirstHashEntry(TclVarHashTablePtr(varTablePtr), &hSrch) : NULL; while (hPtr) { GetVarAndNameFromHash(hPtr, &varPtr, &varNameObj); INCR_REF_COUNT(varNameObj); if (!TclIsVarUndefined(varPtr) && !TclIsVarLink(varPtr)) { if (TclIsVarScalar(varPtr)) { /* * Copy scalar variables from the namespace, which might be * either object or namespace variables. */ if (object) { /* fprintf(stderr, "copy in obj %s var %s val '%s'\n", ObjectName(object), ObjStr(varNameObj), ObjStr(TclVarValue(Tcl_Obj, varPtr, objPtr)));*/ Nsf_ObjSetVar2((Nsf_Object *)destObject, interp, varNameObj, NULL, TclVarValue(Tcl_Obj, varPtr, objPtr), 0); } else { Tcl_ObjSetVar2(interp, varNameObj, NULL, TclVarValue(Tcl_Obj, varPtr, objPtr), TCL_NAMESPACE_ONLY); } } else { if (TclIsVarArray(varPtr)) { /* HERE!! PRE85 Why not [array get/set] based? Let the core iterate */ TclVarHashTable *aTable = TclVarValue(TclVarHashTable, varPtr, tablePtr); Tcl_HashSearch ahSrch; Tcl_HashEntry *ahPtr = aTable ? Tcl_FirstHashEntry(TclVarHashTablePtr(aTable), &ahSrch) :0; for (; ahPtr; ahPtr = Tcl_NextHashEntry(&ahSrch)) { Tcl_Obj *eltNameObj; Var *eltVar; GetVarAndNameFromHash(ahPtr, &eltVar, &eltNameObj); INCR_REF_COUNT(eltNameObj); if (TclIsVarScalar(eltVar)) { if (object) { Nsf_ObjSetVar2((Nsf_Object *)destObject, interp, varNameObj, eltNameObj, TclVarValue(Tcl_Obj, eltVar, objPtr), 0); } else { Tcl_ObjSetVar2(interp, varNameObj, eltNameObj, TclVarValue(Tcl_Obj, eltVar, objPtr), TCL_NAMESPACE_ONLY); } } DECR_REF_COUNT(eltNameObj); } } } } DECR_REF_COUNT(varNameObj); hPtr = Tcl_NextHashEntry(&hSrch); } if (fromNsPtr) { DECR_REF_COUNT(destFullNameObj); Tcl_PopCallFrame(interp); } return TCL_OK; } /* cmd parameter::get NsfParameterGetCmd { {-argName "parametersubcmd" -type "default|list|name|syntax|type" -required 1} {-argName "parameterspec" -required 1 -type tclobj} {-argName "varname" -required 0 -type tclobj} } */ static int NsfParameterGetCmd(Tcl_Interp *interp, int parametersubcmd, Tcl_Obj *parameterspec, Tcl_Obj *varname) { NsfParsedParam parsedParam; Tcl_Obj *paramsObj, *listObj = NULL; Nsf_Param *paramsPtr; int result; if (parametersubcmd != ParametersubcmdDefaultIdx && varname != NULL) { return NsfPrintError(interp, "parameter::get: provided third arguement is only valid for querying defaults"); } paramsObj = Tcl_NewListObj(1, ¶meterspec); INCR_REF_COUNT(paramsObj); result = ParamDefsParse(interp, NULL, paramsObj, NSF_DISALLOWED_ARG_OBJECT_PARAMETER, 1, &parsedParam); DECR_REF_COUNT(paramsObj); if (result != TCL_OK) { return result; } assert(parsedParam.paramDefs); paramsPtr = parsedParam.paramDefs->paramsPtr; assert(paramsPtr); switch (parametersubcmd) { case ParametersubcmdDefaultIdx: if (paramsPtr->defaultValue) { if (varname) { Tcl_Obj *resultObj = Tcl_ObjSetVar2(interp, varname, NULL, paramsPtr->defaultValue, TCL_LEAVE_ERR_MSG|TCL_PARSE_PART1); if (resultObj == NULL) { ParamDefsRefCountDecr(parsedParam.paramDefs); return TCL_ERROR; } } Tcl_SetObjResult(interp, NsfGlobalObjs[NSF_ONE]); } else { Tcl_SetObjResult(interp, NsfGlobalObjs[NSF_ZERO]); } break; case ParametersubcmdListIdx: listObj = ParamDefsList(interp, paramsPtr); Tcl_SetObjResult(interp, listObj); DECR_REF_COUNT2("paramDefsObj", listObj); break; case ParametersubcmdNameIdx: listObj = ParamDefsNames(interp, paramsPtr); Tcl_SetObjResult(interp, listObj); DECR_REF_COUNT2("paramDefsObj", listObj); break; case ParametersubcmdSyntaxIdx: listObj = NsfParamDefsSyntax(paramsPtr); Tcl_SetObjResult(interp, listObj); DECR_REF_COUNT2("paramDefsObj", listObj); break; case ParametersubcmdTypeIdx: if (paramsPtr->type) { if (paramsPtr->converter == Nsf_ConvertToTclobj && paramsPtr->converterArg) { Tcl_SetObjResult(interp, paramsPtr->converterArg); } else { Tcl_SetObjResult(interp, Tcl_NewStringObj(paramsPtr->type, -1)); } } else { Tcl_SetObjResult(interp, NsfGlobalObjs[NSF_EMPTY]); } break; } ParamDefsRefCountDecr(parsedParam.paramDefs); return TCL_OK; } /* cmd parameter:invalidate::classcache NsfParameterInvalidateClassCacheCmd { {-argName "class" -required 1 -type class} } */ static int NsfParameterInvalidateClassCacheCmd(Tcl_Interp *interp, NsfClass *cl) { if (cl->parsedParamPtr) { NsfClassParamPtrEpochIncr("NsfParameterInvalidateClassCacheCmd"); /* fprintf(stderr, " %s invalidate %p\n", ClassName(cl), cl->parsedParamPtr); */ ParsedParamFree(cl->parsedParamPtr); cl->parsedParamPtr = NULL; } return TCL_OK; } /* cmd parameter:invalidate::objectcache NsfParameterInvalidateObjectCacheCmd { {-argName "object" -required 1 -type object} } */ static int NsfParameterInvalidateObjectCacheCmd(Tcl_Interp *interp, NsfObject *object) { #if defined(PER_OBJECT_PARAMETER_CACHING) if (object->opt && object->opt->parsedParamPtr) { /* fprintf(stderr, " %s invalidate %p\n", ObjectName(object), obj->opt->parsedParamPtr); */ ParsedParamFree(object->opt->parsedParamPtr); object->opt->parsedParamPtr = NULL; } #endif return TCL_OK; } /* cmd parameter::specs NsfParameterSpecsCmd { {-argName "-configure" -nrargs 0 -required 0} {-argName "-nonposargs" -nrargs 0 -required 0} {-argName "slotobjs" -required 1 -type tclobj} } */ static int NsfParameterSpecsCmd(Tcl_Interp *interp, int withConfigure, int withNonposargs, Tcl_Obj *slotListObj) { NsfTclObjList *objList = NULL, *elt; Tcl_Obj **objv, *resultObj; int result = TCL_OK, i, objc; if (Tcl_ListObjGetElements(interp, slotListObj, &objc, &objv) != TCL_OK) { return NsfPrintError(interp, "NsfParameterSpecsCmd: invalid slot object list"); } /* * Iterate over the slot objects and obtain the position and the * parameterSpec. */ for (i = 0; i < objc; i++) { NsfObject *slotObject; Tcl_Obj *positionObj, *specObj = NULL; if (GetObjectFromObj(interp, objv[i], &slotObject) != TCL_OK) { return NsfPrintError(interp, "objectparameter: slot element is not a next scripting object"); } /* * When withConfigure is provided, skip this parameter ... * - when configure is not set * - or configure == 0 */ if (withConfigure) { int configure = 0; Tcl_Obj *configureObj = Nsf_ObjGetVar2((Nsf_Object *)slotObject, interp, NsfGlobalObjs[NSF_CONFIGURABLE], NULL, 0); if (!configureObj) continue; Tcl_GetBooleanFromObj(interp, configureObj, &configure); if (!configure) continue; } /* * When withNonposargs is provided, skip this parameter ... * - when positional == 1 */ if (withNonposargs) { Tcl_Obj *positionalObj = Nsf_ObjGetVar2((Nsf_Object *)slotObject, interp, NsfGlobalObjs[NSF_POSITIONAL], NULL, 0); if (positionalObj) { int positional = 0; Tcl_GetBooleanFromObj(interp, positionalObj, &positional); if (positional) continue; } } positionObj = Nsf_ObjGetVar2((Nsf_Object *)slotObject, interp, NsfGlobalObjs[NSF_POSITION], NULL, 0); specObj = Nsf_ObjGetVar2((Nsf_Object *)slotObject, interp, NsfGlobalObjs[NSF_PARAMETERSPEC], NULL, 0); if (specObj == NULL) { result = CallMethod(slotObject, interp, NsfGlobalObjs[NSF_GET_PARAMETER_SPEC], 2, 0, NSF_CM_IGNORE_PERMISSIONS|NSF_CSC_IMMEDIATE); if (unlikely(result != TCL_OK)) { return NsfPrintError(interp, "objectparameter: %s %s returned error", ObjectName(slotObject), NsfGlobalStrings[NSF_GET_PARAMETER_SPEC]); } specObj = Tcl_GetObjResult(interp); } /*fprintf(stderr, "NsfParameterSpecsCmd slot obj = %s pos %s spec %s\n", ObjStr(objv[i]), positionObj ? ObjStr(positionObj) : "NONE", ObjStr(specObj) );*/ /* * Add the spec to the list indicated by the position */ TclObjListAdd(interp, &objList, positionObj, specObj); } /* * Fold the per-position lists into a flat result list */ resultObj = Tcl_NewListObj(0, NULL); for (elt = objList; elt; elt = elt->nextPtr) { Tcl_ListObjGetElements(interp, elt->payload, &objc, &objv); for (i = 0; i < objc; i++) { Tcl_ListObjAppendElement(interp, resultObj, objv[i]); } } Tcl_SetObjResult(interp, resultObj); TclObjListFreeList(objList); return result; } /* cmd proc NsfProcCmd { {-argName "-ad" -required 0} {-argName "procName" -required 1 -type tclobj} {-argName "arguments" -required 1 -type tclobj} {-argName "body" -required 1 -type tclobj} } */ static int NsfProcCmd(Tcl_Interp *interp, int with_ad, Tcl_Obj *nameObj, Tcl_Obj *arguments, Tcl_Obj *body) { NsfParsedParam parsedParam; int result; /* * Parse argument list "arguments" to determine if we should provide * nsf parameter handling. */ result = ParamDefsParse(interp, nameObj, arguments, NSF_DISALLOWED_ARG_METHOD_PARAMETER, 0, &parsedParam); if (result != TCL_OK) { return result; } if (parsedParam.paramDefs) { /* * We need parameter handling. In such cases, a thin C-based layer * is added which handles the parameter passing and calls the proc * later. */ result = NsfProcAdd(interp, &parsedParam, ObjStr(nameObj), body, with_ad); } else { /* * No parameter handling needed. A plain Tcl proc is added. */ Tcl_Obj *ov[4]; ov[0] = NULL; ov[1] = nameObj; ov[2] = arguments; ov[3] = body; result = Tcl_ProcObjCmd(0, interp, 4, ov); } return result; } /* cmd relation NsfRelationCmd { {-argName "object" -type object} {-argName "relationtype" -required 1 -type "object-mixin|class-mixin|object-filter|class-filter|class|superclass|rootclass"} {-argName "value" -required 0 -type tclobj} } */ static int NsfRelationCmd(Tcl_Interp *interp, NsfObject *object, int relationtype, Tcl_Obj *valueObj) { int oc; Tcl_Obj **ov; NsfObject *nObject = NULL; NsfClass *cl = NULL; NsfObjectOpt *objopt = NULL; NsfClassOpt *clopt = NULL, *nclopt = NULL; int i; /*fprintf(stderr, "NsfRelationCmd %s rel=%d val='%s'\n", ObjectName(object), relationtype, valueObj ? ObjStr(valueObj) : "NULL");*/ if (relationtype == RelationtypeClass_mixinIdx || relationtype == RelationtypeClass_filterIdx) { if (NsfObjectIsClass(object)) { cl = (NsfClass *)object; } else { /* fall back to per-object case */ relationtype = (relationtype == RelationtypeClass_mixinIdx) ? RelationtypeObject_mixinIdx : RelationtypeObject_filterIdx ; } } switch (relationtype) { case RelationtypeObject_filterIdx: case RelationtypeObject_mixinIdx: if (valueObj == NULL) { objopt = object->opt; switch (relationtype) { case RelationtypeObject_mixinIdx: return objopt ? MixinInfo(interp, objopt->objMixins, NULL, 1, NULL) : TCL_OK; case RelationtypeObject_filterIdx: return objopt ? FilterInfo(interp, objopt->objFilters, NULL, 1, 0) : TCL_OK; } } if (Tcl_ListObjGetElements(interp, valueObj, &oc, &ov) != TCL_OK) { return TCL_ERROR; } objopt = NsfRequireObjectOpt(object); break; case RelationtypeClass_mixinIdx: case RelationtypeClass_filterIdx: if (valueObj == NULL) { clopt = cl->opt; switch (relationtype) { case RelationtypeClass_mixinIdx: return clopt ? MixinInfo(interp, clopt->classMixins, NULL, 1, NULL) : TCL_OK; case RelationtypeClass_filterIdx: return clopt ? FilterInfo(interp, clopt->classFilters, NULL, 1, 0) : TCL_OK; } } if (Tcl_ListObjGetElements(interp, valueObj, &oc, &ov) != TCL_OK) { return TCL_ERROR; } clopt = NsfRequireClassOpt(cl); break; case RelationtypeSuperclassIdx: if (!NsfObjectIsClass(object)) { return NsfObjErrType(interp, "superclass", object->cmdName, "class", NULL); } cl = (NsfClass *)object; if (valueObj == NULL) { return ListSuperclasses(interp, cl, NULL, 0); } if (Tcl_ListObjGetElements(interp, valueObj, &oc, &ov) != TCL_OK) { return TCL_ERROR; } return SuperclassAdd(interp, cl, oc, ov, valueObj, cl->object.cl); case RelationtypeClassIdx: if (valueObj == NULL) { Tcl_SetObjResult(interp, object->cl->object.cmdName); return TCL_OK; } GetClassFromObj(interp, valueObj, &cl, 1); if (!cl) return NsfObjErrType(interp, "class", valueObj, "a class", NULL); i = ChangeClass(interp, object, cl); if (i == TCL_OK) { Tcl_SetObjResult(interp, object->cl->object.cmdName); } return i; case RelationtypeRootclassIdx: { NsfClass *metaClass = NULL; if (!NsfObjectIsClass(object)) { return NsfObjErrType(interp, "rootclass", object->cmdName, "class", NULL); } cl = (NsfClass *)object; if (valueObj == NULL) { return NsfPrintError(interp, "metaclass must be specified as third argument"); } GetClassFromObj(interp, valueObj, &metaClass, 0); if (!metaClass) return NsfObjErrType(interp, "rootclass", valueObj, "class", NULL); cl->object.flags |= NSF_IS_ROOT_CLASS; metaClass->object.flags |= NSF_IS_ROOT_META_CLASS; return TCL_OK; /* todo: need to remove these properties? allow to delete a class system at runtime? */ } } switch (relationtype) { case RelationtypeObject_mixinIdx: { NsfCmdList *newMixinCmdList = NULL; for (i = 0; i < oc; i++) { if (MixinAdd(interp, &newMixinCmdList, ov[i], object->cl->object.cl) != TCL_OK) { CmdListFree(&newMixinCmdList, GuardDel); return TCL_ERROR; } } if (objopt->objMixins) { NsfCmdList *cmdlist, *del; for (cmdlist = objopt->objMixins; cmdlist; cmdlist = cmdlist->nextPtr) { cl = NsfGetClassFromCmdPtr(cmdlist->cmdPtr); clopt = cl ? cl->opt : NULL; if (clopt) { del = CmdListFindCmdInList(object->id, clopt->isObjectMixinOf); if (del) { /* fprintf(stderr, "Removing object %s from isObjectMixinOf of class %s\n", ObjectName(object), ObjStr(NsfGetClassFromCmdPtr(cmdlist->cmdPtr)->object.cmdName)); */ del = CmdListRemoveFromList(&clopt->isObjectMixinOf, del); CmdListDeleteCmdListEntry(del, GuardDel); } } } CmdListFree(&objopt->objMixins, GuardDel); } /* * Invalidate per-object infos */ NsfParameterInvalidateObjectCacheCmd(interp, object); object->flags &= ~NSF_MIXIN_ORDER_VALID; /* * Since mixin procs may be used as filters -> we have to invalidate * filters as well. */ object->flags &= ~NSF_FILTER_ORDER_VALID; /* * Now add the specified mixins. */ objopt->objMixins = newMixinCmdList; for (i = 0; i < oc; i++) { Tcl_Obj *ocl = NULL; /* fprintf(stderr, "Added to mixins of %s: %s\n", ObjectName(object), ObjStr(ov[i])); */ Tcl_ListObjIndex(interp, ov[i], 0, &ocl); GetObjectFromObj(interp, ocl, &nObject); if (nObject) { /* fprintf(stderr, "Registering object %s to isObjectMixinOf of class %s\n", ObjectName(object), ObjectName(nObject)); */ nclopt = NsfRequireClassOpt((NsfClass *)nObject); CmdListAddSorted(&nclopt->isObjectMixinOf, object->id, NULL); } /* else fprintf(stderr, "Problem registering %s as a mixinof of %s\n", ObjStr(ov[i]), ClassName(cl)); */ } MixinComputeDefined(interp, object); FilterComputeDefined(interp, object); break; } case RelationtypeObject_filterIdx: { NsfCmdList *newFilterCmdList = NULL; for (i = 0; i < oc; i ++) { if (FilterAdd(interp, &newFilterCmdList, ov[i], object, 0) != TCL_OK) { CmdListFree(&newFilterCmdList, GuardDel); return TCL_ERROR; } } if (objopt->objFilters) { CmdListFree(&objopt->objFilters, GuardDel); } object->flags &= ~NSF_FILTER_ORDER_VALID; objopt->objFilters = newFilterCmdList; /*FilterComputeDefined(interp, object);*/ break; } case RelationtypeClass_mixinIdx: { NsfCmdList *newMixinCmdList = NULL; NsfClasses *subClasses; for (i = 0; i < oc; i++) { if (MixinAdd(interp, &newMixinCmdList, ov[i], cl->object.cl) != TCL_OK) { CmdListFree(&newMixinCmdList, GuardDel); return TCL_ERROR; } } if (clopt->classMixins) { RemoveFromClassMixinsOf(cl->object.id, clopt->classMixins); CmdListFree(&clopt->classMixins, GuardDel); } subClasses = TransitiveSubClasses(cl); MixinInvalidateObjOrders(interp, cl, subClasses); /* * Since methods of mixed in classes may be used as filters, we have to * invalidate the filters as well. */ if (FiltersDefined(interp) > 0) { FilterInvalidateObjOrders(interp, cl, subClasses); } NsfClassListFree(subClasses); clopt->classMixins = newMixinCmdList; for (i = 0; i < oc; i++) { Tcl_Obj *ocl = NULL; /* fprintf(stderr, "Added to class-mixins of %s: %s\n", ClassName(cl), ObjStr(ov[i])); */ Tcl_ListObjIndex(interp, ov[i], 0, &ocl); GetObjectFromObj(interp, ocl, &nObject); if (nObject) { /* fprintf(stderr, "Registering class %s to isClassMixinOf of class %s\n", ClassName(cl), ObjectName(nObject)); */ nclopt = NsfRequireClassOpt((NsfClass *) nObject); CmdListAddSorted(&nclopt->isClassMixinOf, cl->object.id, NULL); } /* else fprintf(stderr, "Problem registering %s as a class-mixin of %s\n", ObjStr(ov[i]), ClassName(cl)); */ } break; } case RelationtypeClass_filterIdx: { NsfCmdList *newFilterCmdList = NULL; for (i = 0; i < oc; i ++) { if (FilterAdd(interp, &newFilterCmdList, ov[i], 0, cl) != TCL_OK) { CmdListFree(&newFilterCmdList, GuardDel); return TCL_ERROR; } } if (clopt->classFilters) { CmdListFree(&clopt->classFilters, GuardDel); } if (FiltersDefined(interp) > 0) { NsfClasses *subClasses = TransitiveSubClasses(cl); FilterInvalidateObjOrders(interp, cl, subClasses); NsfClassListFree(subClasses); } clopt->classFilters = newFilterCmdList; break; } } NsfRelationCmd(interp, object, relationtype, NULL); return TCL_OK; } /* cmd current NsfCurrentCmd { {-argName "currentoption" -required 0 -type "proc|method|methodpath|object|class|activelevel|args|activemixin|calledproc|calledmethod|calledclass|callingproc|callingmethod|callingclass|callinglevel|callingobject|filterreg|isnextcall|next"} } */ static int NsfCurrentCmd(Tcl_Interp *interp, int selfoption) { NsfObject *object = GetSelfObj(interp); NsfCallStackContent *cscPtr; Tcl_CallFrame *framePtr; int result = TCL_OK; if (selfoption == 0 || selfoption == CurrentoptionObjectIdx) { if (likely(object != NULL)) { Tcl_SetObjResult(interp, object->cmdName); return TCL_OK; } else { return NsfNoCurrentObjectError(interp, NULL); } } if (unlikely(!object && selfoption != CurrentoptionCallinglevelIdx)) { return NsfNoCurrentObjectError(interp, NULL); } switch (selfoption) { case CurrentoptionMethodIdx: /* fall through */ case CurrentoptionProcIdx: cscPtr = CallStackGetTopFrame0(interp); if (cscPtr) { CONST char *procName = Tcl_GetCommandName(interp, cscPtr->cmdPtr); Tcl_SetResult(interp, (char *)procName, TCL_VOLATILE); } else { return NsfPrintError(interp, "can't find proc"); } break; case CurrentoptionMethodpathIdx: (void) CallStackGetTopFrame(interp, &framePtr); Tcl_SetObjResult(interp, CallStackMethodPath(interp, framePtr)); break; case CurrentoptionClassIdx: /* class subcommand */ cscPtr = CallStackGetTopFrame0(interp); Tcl_SetObjResult(interp, cscPtr->cl ? cscPtr->cl->object.cmdName : NsfGlobalObjs[NSF_EMPTY]); break; case CurrentoptionActivelevelIdx: Tcl_SetObjResult(interp, ComputeLevelObj(interp, ACTIVE_LEVEL)); break; case CurrentoptionArgsIdx: { int nobjc; Tcl_Obj **nobjv; cscPtr = CallStackGetTopFrame(interp, &framePtr); if (cscPtr->objv) { nobjc = cscPtr->objc; nobjv = (Tcl_Obj **)cscPtr->objv; } else { nobjc = Tcl_CallFrame_objc(framePtr); nobjv = (Tcl_Obj **)Tcl_CallFrame_objv(framePtr); } Tcl_SetObjResult(interp, Tcl_NewListObj(nobjc-1, nobjv+1)); break; } case CurrentoptionActivemixinIdx: { NsfObject *object = NULL; if (RUNTIME_STATE(interp)->currentMixinCmdPtr) { object = NsfGetObjectFromCmdPtr(RUNTIME_STATE(interp)->currentMixinCmdPtr); } Tcl_SetObjResult(interp, object ? object->cmdName : NsfGlobalObjs[NSF_EMPTY]); break; } case CurrentoptionCalledprocIdx: case CurrentoptionCalledmethodIdx: cscPtr = CallStackFindActiveFilter(interp); if (cscPtr) { Tcl_SetObjResult(interp, Tcl_NewStringObj(MethodName(cscPtr->filterStackEntry->calledProc), -1)); } else { result = NsfPrintError(interp, "called from outside of a filter"); } break; case CurrentoptionCalledclassIdx: { NsfClass *cl = FindCalledClass(interp, object); Tcl_SetObjResult(interp, cl ? cl->object.cmdName : NsfGlobalObjs[NSF_EMPTY]); break; } case CurrentoptionCallingmethodIdx: case CurrentoptionCallingprocIdx: { Tcl_Obj *resultObj; cscPtr = NsfCallStackFindLastInvocation(interp, 1, &framePtr); if (cscPtr && cscPtr->cmdPtr) { Tcl_Obj *methodNameObj = Tcl_NewStringObj(Tcl_GetCommandName(interp, cscPtr->cmdPtr), -1); /* * By checking the characteristic frame and call type pattern for "leaf" * ensemble dispatches, we make sure that the method path is only * reported for these cases. Otherwise, we constrain the result to the * method name. */ if ((cscPtr->frameType & NSF_CSC_TYPE_ENSEMBLE) && (cscPtr->flags & NSF_CSC_CALL_IS_COMPILE) == 0) { resultObj = CallStackMethodPath(interp, framePtr); result = Tcl_ListObjAppendElement(interp, resultObj, methodNameObj); if (result != TCL_OK) { DECR_REF_COUNT(resultObj); DECR_REF_COUNT(methodNameObj); break; } } else { resultObj = methodNameObj; } } else { resultObj = NsfGlobalObjs[NSF_EMPTY]; } Tcl_SetObjResult(interp, resultObj); break; } case CurrentoptionCallingclassIdx: cscPtr = NsfCallStackFindLastInvocation(interp, 1, NULL); Tcl_SetObjResult(interp, cscPtr && cscPtr->cl ? cscPtr->cl->object.cmdName : NsfGlobalObjs[NSF_EMPTY]); break; case CurrentoptionCallinglevelIdx: if (!object) { Tcl_SetIntObj(Tcl_GetObjResult(interp), 1); } else { Tcl_SetObjResult(interp, ComputeLevelObj(interp, CALLING_LEVEL)); } break; case CurrentoptionCallingobjectIdx: cscPtr = NsfCallStackFindLastInvocation(interp, 1, NULL); Tcl_SetObjResult(interp, cscPtr ? cscPtr->self->cmdName : NsfGlobalObjs[NSF_EMPTY]); break; case CurrentoptionFilterregIdx: cscPtr = CallStackFindActiveFilter(interp); if (cscPtr) { Tcl_SetObjResult(interp, FilterFindReg(interp, object, cscPtr->cmdPtr)); } else { result = NsfPrintError(interp, "called from outside of a filter"); } break; case CurrentoptionIsnextcallIdx: { (void)CallStackGetTopFrame(interp, &framePtr); framePtr = CallStackNextFrameOfType(Tcl_CallFrame_callerPtr(framePtr), FRAME_IS_NSF_METHOD|FRAME_IS_NSF_CMETHOD); cscPtr = framePtr ? Tcl_CallFrame_clientData(framePtr) : NULL; Tcl_SetBooleanObj(Tcl_GetObjResult(interp), (cscPtr && (cscPtr->flags & NSF_CSC_CALL_IS_NEXT))); break; } case CurrentoptionNextmethodIdx: result = FindSelfNext(interp); break; } return result; } /* cmd self NsfSelfCmd { } */ static int NsfSelfCmd(Tcl_Interp *interp) { NsfObject *object = GetSelfObj(interp); if (likely(object != NULL)) { Tcl_SetObjResult(interp, object->cmdName); return TCL_OK; } else { return NsfNoCurrentObjectError(interp, NULL); } } /* cmd var::exists NsfVarExistsCmd { {-argName "-array" -required 0 -nrargs 0} {-argName "object" -required 1 -type object} {-argName "varName" -required 1} } */ static int NsfVarExistsCmd(Tcl_Interp *interp, int withArray, NsfObject *object, CONST char *varName) { int flags = NSF_VAR_TRIGGER_TRACE|NSF_VAR_REQUIRE_DEFINED| (withArray ? NSF_VAR_ISARRAY : 0); if (CheckVarName(interp, varName) != TCL_OK) { return TCL_ERROR; } Tcl_SetIntObj(Tcl_GetObjResult(interp), VarExists(interp, object, varName, NULL, flags)); return TCL_OK; } /* cmd var::import NsfVarImportCmd { {-argName "object" -type object} {-argName "args" -type args} } */ static int NsfVarImport(Tcl_Interp *interp, NsfObject *object, const char *cmdName, int objc, Tcl_Obj *CONST objv[]) { int i, result = TCL_OK; for (i = 0; i < objc && result == TCL_OK; i++) { Tcl_Obj **ov; int oc; /*fprintf(stderr, "ListGetElements %p %s\n", objv[i], ObjStr(objv[i]));*/ if ((result = Tcl_ListObjGetElements(interp, objv[i], &oc, &ov)) == TCL_OK) { Tcl_Obj *varName = NULL, *alias = NULL; switch (oc) { case 0: {varName = objv[i]; break;} case 1: {varName = ov[0]; break;} case 2: {varName = ov[0]; alias = ov[1]; break;} } if (likely(varName != NULL)) { result = GetInstVarIntoCurrentScope(interp, cmdName, object, varName, alias); } else { assert(objv[i]); result = NsfPrintError(interp, "invalid variable specification '%s'", ObjStr(objv[i])); } } } return result; } static int NsfVarImportCmd(Tcl_Interp *interp, NsfObject *object, int objc, Tcl_Obj *CONST objv[]) { return NsfVarImport(interp, object, "importvar", objc, objv); } /* cmd var::set NsfVarSetCmd { {-argName "-array" -required 0 -nrargs 0} {-argName "object" -required 1 -type object} {-argName "varName" -required 1 -type tclobj} {-argName "value" -required 0 -type tclobj} } */ static int NsfVarSetCmd(Tcl_Interp *interp, int withArray, NsfObject *object, Tcl_Obj *varName, Tcl_Obj *valueObj) { if (CheckVarName(interp, ObjStr(varName)) != TCL_OK) { return TCL_ERROR; } if (withArray) { return SetInstArray(interp, object, varName, valueObj); } else { return SetInstVar(interp, object, varName, valueObj); } } /* cmd var::unset NsfVarUnsetCmd { {-argName "-nocomplain" -required 0 -nrargs 0} {-argName "object" -required 1 -type object} {-argName "varName" -required 1 -type tclobj} } */ static int NsfVarUnsetCmd(Tcl_Interp *interp, int withNocomplain, NsfObject *object, Tcl_Obj *varNameObj) { char *varName = ObjStr(varNameObj); if (CheckVarName(interp, varName) != TCL_OK) { return TCL_ERROR; } return UnsetInstVar(interp, withNocomplain, object, varName); } /*********************************************************************** * End generated Next Scripting commands ***********************************************************************/ /* * Parameter support functions */ typedef struct NsfParamWrapper { Nsf_Param *paramPtr; int refCount; int canFree; } NsfParamWrapper; static Tcl_DupInternalRepProc ParamDupInteralRep; static Tcl_FreeInternalRepProc ParamFreeInternalRep; static Tcl_UpdateStringProc ParamUpdateString; static void ParamUpdateString(Tcl_Obj *objPtr) { Tcl_Panic("%s of type %s should not be called", "updateStringProc", objPtr->typePtr->name); } static void ParamDupInteralRep(Tcl_Obj *srcPtr, Tcl_Obj *UNUSED(dupPtr)) { Tcl_Panic("%s of type %s should not be called", "dupStringProc", srcPtr->typePtr->name); } static Tcl_ObjType paramObjType = { "nsfParam", /* name */ ParamFreeInternalRep, /* freeIntRepProc */ ParamDupInteralRep, /* dupIntRepProc */ ParamUpdateString, /* updateStringProc */ ParamSetFromAny /* setFromAnyProc */ }; static void ParamFreeInternalRep( register Tcl_Obj *objPtr) /* Param structure object with internal * representation to free. */ { NsfParamWrapper *paramWrapperPtr = (NsfParamWrapper *)objPtr->internalRep.twoPtrValue.ptr1; if (paramWrapperPtr != NULL) { /* fprintf(stderr, "ParamFreeInternalRep freeing wrapper %p paramPtr %p refCount %dcanFree %d\n", paramWrapperPtr, paramWrapperPtr->paramPtr, paramWrapperPtr->refCount, paramWrapperPtr->canFree);*/ if (paramWrapperPtr->canFree) { ParamsFree(paramWrapperPtr->paramPtr); FREE(NsfParamWrapper, paramWrapperPtr); } else { paramWrapperPtr->refCount--; } } } /* *---------------------------------------------------------------------- * ParamSetFromAny2 -- * * Convert the second argument argument (e.g. "x:integer") into the * internal representation of a Tcl_Obj of the type parameter. The * conversion is performed by the usual ParamParse() function, used * e.g. for the parameter passing for arguments. * * Results: * Result code. * * Side effects: * Converted internal rep of Tcl_Obj * *---------------------------------------------------------------------- */ static int ParamSetFromAny2( Tcl_Interp *interp, /* Used for error reporting if not NULL. */ const char *varNamePrefix, /* shows up as varName in error message */ int configureParameter, /* allow object parameters */ register Tcl_Obj *objPtr) /* The object to convert. */ { Tcl_Obj *fullParamObj = Tcl_NewStringObj(varNamePrefix, -1); int result, possibleUnknowns = 0, plainParams = 0, nrNonposArgs = 0; NsfParamWrapper *paramWrapperPtr = NEW(NsfParamWrapper); paramWrapperPtr->paramPtr = ParamsNew(1); paramWrapperPtr->refCount = 1; paramWrapperPtr->canFree = 0; Tcl_AppendLimitedToObj(fullParamObj, ObjStr(objPtr), -1, INT_MAX, NULL); INCR_REF_COUNT(fullParamObj); result = ParamParse(interp, NsfGlobalObjs[NSF_VALUECHECK], fullParamObj, configureParameter ? NSF_DISALLOWED_ARG_OBJECT_PARAMETER : NSF_DISALLOWED_ARG_VALUECHECK, paramWrapperPtr->paramPtr, &possibleUnknowns, &plainParams, &nrNonposArgs); /* * We treat currently unknown user level converters as error. */ if (paramWrapperPtr->paramPtr->flags & NSF_ARG_CURRENTLY_UNKNOWN) { result = TCL_ERROR; } if (result == TCL_OK) { /* * In success cases, the memory allocated by this function is freed via * the tcl_obj type. */ paramWrapperPtr->paramPtr->flags |= NSF_ARG_UNNAMED; if (*(paramWrapperPtr->paramPtr->name) == 'r') { paramWrapperPtr->paramPtr->flags |= NSF_ARG_IS_RETURNVALUE; } TclFreeIntRep(objPtr); objPtr->internalRep.twoPtrValue.ptr1 = (void *)paramWrapperPtr; objPtr->internalRep.twoPtrValue.ptr2 = NULL; objPtr->typePtr = ¶mObjType; } else { /* * In error cases, free manually memory allocated by this function. */ ParamsFree(paramWrapperPtr->paramPtr); FREE(NsfParamWrapper, paramWrapperPtr); } DECR_REF_COUNT(fullParamObj); return result; } static int ParamSetFromAny( Tcl_Interp *interp, /* Used for error reporting if not NULL. */ register Tcl_Obj *objPtr) /* The object to convert. */ { return ParamSetFromAny2(interp, "value:", 0, objPtr); } /* *---------------------------------------------------------------------- * GetObjectParameterDefinition -- * * Obtain the parameter definitions for an object by calling the method * "__objectparameter" if the value is not cached already. Caching is * performed on the class, the cached values are used in case there are no * object-specific slots. * * Results: * Tcl return code, parsed structure in last argument * * Side effects: * Updates potentially cl->parsedParamPtr * *---------------------------------------------------------------------- */ static int GetObjectParameterDefinition(Tcl_Interp *interp, Tcl_Obj *procNameObj, NsfObject *object, NsfParsedParam *parsedParamPtr) { int result; NsfClass *class; assert(object); if ((object->flags & NSF_HAS_PER_OBJECT_SLOTS) || (object->opt && object->opt->objMixins) ) { /* * We have object-specific parameters. Do not use the per-class cache, * and do not save the results in the per-class cache */ /*fprintf(stderr, "per-object configure obj %s flags %.6x\n", ObjectName(object), object->flags);*/ class = NULL; } else { class = object->cl; } /* * Parameter definitions are cached in the class, for which * instances are created. The parameter definitions are flushed in * the following situations: * * a) on class cleanup: ParsedParamFree(cl->parsedParamPtr) * b) on class structure changes, * c) when class-mixins are added, * d) when new slots are defined, * e) when slots are removed * * When slot defaults or types are changed, the slots have to * perform a manual "::nsf::invalidateobjectparameter $domain". */ /* * Check, if there is already a parameter definition available for * creating objects of this class. */ if (likely(class && class->parsedParamPtr)) { NsfParsedParam *clParsedParamPtr = class->parsedParamPtr; parsedParamPtr->paramDefs = clParsedParamPtr->paramDefs; parsedParamPtr->possibleUnknowns = clParsedParamPtr->possibleUnknowns; result = TCL_OK; #if defined(PER_OBJECT_PARAMETER_CACHING) } else if (object->opt && object->opt->parsedParamPtr && object->opt->classParamPtrEpoch == RUNTIME_STATE(interp)->classParamPtrEpoch) { NsfParsedParam *objParsedParamPtr = object->opt->parsedParamPtr; /*fprintf(stderr, "reuse obj param for obj %s paramPtr %p\n", ObjectName(object), objParsedParamPtr);*/ parsedParamPtr->paramDefs = objParsedParamPtr->paramDefs; parsedParamPtr->possibleUnknowns = objParsedParamPtr->possibleUnknowns; result = TCL_OK; #endif } else { /* * There is no parameter definition available, get a new one in * the the string representation. */ Tcl_Obj *methodObj = NsfMethodObj(object, NSF_c_objectparameter_idx); if (methodObj) { /*fprintf(stderr, "calling %s objectparameter\n", ObjectName(object));*/ result = CallMethod(object, interp, methodObj, 2, 0, NSF_CM_IGNORE_PERMISSIONS|NSF_CSC_IMMEDIATE); if (likely(result == TCL_OK)) { Tcl_Obj *rawConfArgs = Tcl_GetObjResult(interp); /*fprintf(stderr, ".... rawConfArgs for %s => '%s'\n", ObjectName(object), ObjStr(rawConfArgs));*/ INCR_REF_COUNT(rawConfArgs); /* * Parse the string representation to obtain the internal * representation. */ result = ParamDefsParse(interp, procNameObj, rawConfArgs, NSF_DISALLOWED_ARG_OBJECT_PARAMETER, 1, parsedParamPtr); if (likely(result == TCL_OK)) { NsfParsedParam *ppDefPtr = NEW(NsfParsedParam); ppDefPtr->paramDefs = parsedParamPtr->paramDefs; ppDefPtr->possibleUnknowns = parsedParamPtr->possibleUnknowns; if (class) { class->parsedParamPtr = ppDefPtr; #if defined(PER_OBJECT_PARAMETER_CACHING) } else { NsfObjectOpt *opt = NsfRequireObjectOpt(object); opt->parsedParamPtr = ppDefPtr; opt->classParamPtrEpoch = RUNTIME_STATE(interp)->classParamPtrEpoch; /*fprintf(stderr, "set obj param for obj %s epoch %d ppDefPtr %p\n", ObjectName(object), opt->classParamPtrEpoch, ppDefPtr);*/ #endif } if (ppDefPtr->paramDefs) { ParamDefsRefCountIncr(ppDefPtr->paramDefs); } } DECR_REF_COUNT(rawConfArgs); } } else { parsedParamPtr->paramDefs = NULL; parsedParamPtr->possibleUnknowns = 0; result = TCL_OK; } } return result; } /* *---------------------------------------------------------------------- * ParameterCheck -- * * Check the provided valueObj against the parameter specification provided * in the second argument (paramObjPtr), when doCheckArguments is true. This * function is used e.g. by nsf::is, where only the right hand side of a * parameter specification (after the colon) is specified. The argument * Name (before the colon in a parameter spec) is provided via * argNamePrefix. The converted parameter structure is returned optionally * via the last argument. * * Results: * Tcl return code, parsed structure in last argument * * Side effects: * Converts potentially tcl_obj type of paramObjPtr * *---------------------------------------------------------------------- */ static int ParameterCheck(Tcl_Interp *interp, Tcl_Obj *paramObjPtr, Tcl_Obj *valueObj, const char *argNamePrefix, int doCheckArguments, int isNamed, int doConfigureParameter, Nsf_Param **paramPtrPtr) { Nsf_Param *paramPtr; NsfParamWrapper *paramWrapperPtr; Tcl_Obj *outObjPtr = NULL; ClientData checkedData; int result, flags = 0; /*fprintf(stderr, "ParameterCheck %s value %p %s\n", ObjStr(paramObjPtr), valueObj, ObjStr(valueObj));*/ if (paramObjPtr->typePtr == ¶mObjType) { paramWrapperPtr = (NsfParamWrapper *) paramObjPtr->internalRep.twoPtrValue.ptr1; } else { /* * We could use in principle Tcl_ConvertToType(..., ¶mObjType) instead * of checking the type manually, but we want to pass the argNamePrefix * explicitly. */ result = ParamSetFromAny2(interp, argNamePrefix, doConfigureParameter, paramObjPtr); if (result == TCL_OK) { paramWrapperPtr = (NsfParamWrapper *) paramObjPtr->internalRep.twoPtrValue.ptr1; } else { return NsfPrintError(interp, "invalid value constraints \"%s\"", ObjStr(paramObjPtr)); } } paramPtr = paramWrapperPtr->paramPtr; if (paramPtrPtr) *paramPtrPtr = paramPtr; if (isNamed) { paramPtr->flags &= ~NSF_ARG_UNNAMED; } result = ArgumentCheck(interp, valueObj, paramPtr, doCheckArguments, &flags, &checkedData, &outObjPtr); /*fprintf(stderr, "ParameterCheck paramPtr %p final refCount of wrapper %d can free %d flags %.6x\n", paramPtr, paramWrapperPtr->refCount, paramWrapperPtr->canFree, flags);*/ assert(paramWrapperPtr->refCount > 0); paramWrapperPtr->canFree = 1; if (flags & NSF_PC_MUST_DECR) { DECR_REF_COUNT2("valueObj", outObjPtr); } return result; } /*********************************************************************** * Begin Object Methods ***********************************************************************/ /* objectMethod autoname NsfOAutonameMethod { {-argName "-instance"} {-argName "-reset"} {-argName "name" -required 1 -type tclobj} } */ static int NsfOAutonameMethod(Tcl_Interp *interp, NsfObject *object, int withInstance, int withReset, Tcl_Obj *nameObj) { Tcl_Obj *autoname = AutonameIncr(interp, nameObj, object, withInstance, withReset); if (autoname) { Tcl_SetObjResult(interp, autoname); DECR_REF_COUNT2("autoname", autoname); return TCL_OK; } return NsfPrintError(interp, "autoname failed. Probably format string (with %%) was not well-formed"); } /* objectMethod class NsfOClassMethod { {-argName "class" -required 0 -type tclobj} } */ static int NsfOClassMethod(Tcl_Interp *interp, NsfObject *object, Tcl_Obj *classObj) { return NsfRelationCmd(interp, object, RelationtypeClassIdx, classObj); } /* objectMethod cleanup NsfOCleanupMethod { } */ static int NsfOCleanupMethod(Tcl_Interp *interp, NsfObject *object) { NsfClass *cl = NsfObjectToClass(object); Tcl_Obj *savedNameObj; int softrecreate; #if defined(OBJDELETION_TRACE) fprintf(stderr, "+++ NsfOCleanupMethod\n"); #endif PRINTOBJ("NsfOCleanupMethod", object); savedNameObj = object->cmdName; INCR_REF_COUNT(savedNameObj); /* save and pass around softrecreate*/ softrecreate = object->flags & NSF_RECREATE && RUNTIME_STATE(interp)->doSoftrecreate; CleanupDestroyObject(interp, object, softrecreate); CleanupInitObject(interp, object, object->cl, object->nsPtr, softrecreate); if (cl) { CleanupDestroyClass(interp, cl, softrecreate, 1); CleanupInitClass(interp, cl, cl->nsPtr, softrecreate, 1); } DECR_REF_COUNT(savedNameObj); return TCL_OK; } /* objectMethod configure NsfOConfigureMethod { {-argName "args" -type allargs} } */ static NsfObject* GetSlotObject(Tcl_Interp *interp, Tcl_Obj *slotObj) { NsfObject *slotObject = NULL; assert(slotObj != NULL); GetObjectFromObj(interp, slotObj, &slotObject); if (unlikely(slotObject == NULL)) { NsfPrintError(interp, "couldn't resolve slot object %s", ObjStr(slotObj)); } return slotObject; } static int NsfOConfigureMethod(Tcl_Interp *interp, NsfObject *object, int objc, Tcl_Obj *CONST objv[]) { int result, i; NsfParsedParam parsedParam; Nsf_Param *paramPtr; NsfParamDefs *paramDefs; Tcl_Obj *newValue, *initMethodObj; CONST char *initString; ParseContext pc; CallFrame frame, *framePtr = &frame, *uplevelVarFramePtr; #if 0 fprintf(stderr, "NsfOConfigureMethod %s flags %.6x oc %2d", ObjectName(object), object->flags, objc); for(i = 0; i < objc; i++) {fprintf(stderr, " [%d]=%s,", i, ObjStr(objv[i]));} fprintf(stderr, "\n"); #endif /* Get the object parameter definition */ result = GetObjectParameterDefinition(interp, objv[0], object, &parsedParam); if (result != TCL_OK || !parsedParam.paramDefs) { /*fprintf(stderr, "... nothing to do for method %s\n", ObjStr(objv[0]));*/ return result; } /* * Get the initMethodObj/initString outside the loop iterating over the * arguments. */ if (CallDirectly(interp, object, NSF_o_init_idx, &initMethodObj)) { initString = NULL; } else { initString = ObjStr(initMethodObj); } /* * The effective call site of the configure() method (e.g., a proc or a * method) can result from up-leveling the object creation procedure; * therefore, the *effective* call site can deviate from the *declaring* * call site (e.g. as in XOTcl2's unknown method). In such a scenario, the * configure() dispatch finds itself in a particular call-stack * configuration: The top-most frame reflects the declaring call site * (interp->framePtr), while the effective call site (interp->varFramePtr) * is identified by a lower call-stack level. * * Since configure pushes an object frame (for accessing the instance * variables) and sometimes a CMETHOD frame (for method invocations) we * record a) whether there was a preceding uplevel (identifiable through * deviating interp->framePtr and interp->varFramePtr) and, in case, b) the * ruling variable frame context. The preserved call-frame reference can * later be used to restore the uplevel'ed call frame context. */ uplevelVarFramePtr = (Tcl_CallFrame *)Tcl_Interp_varFramePtr(interp) != Tcl_Interp_framePtr(interp) ? Tcl_Interp_varFramePtr(interp) : NULL; /* * Push frame to allow for [self] and make instance variables of obj * accessible as locals. */ Nsf_PushFrameObj(interp, object, framePtr); /* Process the actual arguments based on the parameter definitions */ paramDefs = parsedParam.paramDefs; ParamDefsRefCountIncr(paramDefs); result = ProcessMethodArguments(&pc, interp, object, 0, paramDefs, NsfGlobalObjs[NSF_CONFIGURE], objc, objv); if (result != TCL_OK) { Nsf_PopFrameObj(interp, framePtr); goto configure_exit; } /* * At this point, the arguments are tested to be valid (according to the * parameter definitions) and the defaults are set. Now we have to apply the * arguments (mostly setting instance variables). */ #if defined(CONFIGURE_ARGS_TRACE) fprintf(stderr, "*** POPULATE OBJ '%s': nr of parsed args %d\n", ObjectName(object), pc.objc); #endif for (i = 1, paramPtr = paramDefs->paramsPtr; paramPtr->name; paramPtr++, i++) { /* * Set the new value always when the new value was specified (was not * taken from the default). When we take the default, we do not overwrite * already existing values (which might have been set via parameter * alias). */ /*fprintf(stderr, "[%d] param %s, object init called %d is default %d value = '%s' nrArgs %d\n", i, paramPtr->name, (object->flags & NSF_INIT_CALLED), (pc.flags[i-1] & NSF_PC_IS_DEFAULT), ObjStr(pc.full_objv[i]), paramPtr->nrArgs);*/ if ((pc.flags[i-1] & NSF_PC_IS_DEFAULT)) { /* * Object parameter method calls (when the flag * NSF_ARG_METHOD_INVOCATION is set) do not set instance variables, so * we do not have to check for existing variables. */ if ((paramPtr->flags & NSF_ARG_METHOD_INVOCATION) == 0) { Tcl_Obj *varObj = Tcl_ObjGetVar2(interp, paramPtr->nameObj, NULL, TCL_PARSE_PART1); if (varObj) { /* * The value exists already, ignore this parameter. */ /*fprintf(stderr, "a variable for %s exists already, " "ignore param flags %.6x valueObj %p\n", paramPtr->name, paramPtr->flags, pc.full_objv[i]);*/ continue; } } } else if (unlikely(paramPtr->flags & NSF_ARG_REQUIRED && pc.full_objv[i] == NsfGlobalObjs[NSF___UNKNOWN__])) { /* Previous versions contained a test for * (object->flags & NSF_INIT_CALLED) * * to perform required testing just for in the non-initialized state. We * switched in 2.0b5 to checking for the existance of the associated * instance variable, which works under the assumption that the instance * variable has the same name and that e.g. an required alias parameter * sets this variable either. Similar assumption is in the default * handling. Future versions might use a more generneral handling of the * parameter states. */ Tcl_Obj *varObj = Tcl_ObjGetVar2(interp, paramPtr->nameObj, NULL, TCL_PARSE_PART1); if (varObj == NULL) { Tcl_Obj *paramDefsObj = NsfParamDefsSyntax(paramDefs->paramsPtr); NsfPrintError(interp, "required argument '%s' is missing, should be:\n\t%s%s%s %s", paramPtr->nameObj ? ObjStr(paramPtr->nameObj) : paramPtr->name, pc.object ? ObjectName(pc.object) : "", pc.object ? " " : "", ObjStr(pc.full_objv[0]), ObjStr(paramDefsObj)); DECR_REF_COUNT2("paramDefsObj", paramDefsObj); Nsf_PopFrameObj(interp, framePtr); result = TCL_ERROR; goto configure_exit; } } newValue = pc.full_objv[i]; /*fprintf(stderr, " new Value of %s = [%d] %p '%s', type %s addr %p\n", ObjStr(paramPtr->nameObj), i, newValue, newValue ? ObjStr(newValue) : "(null)", paramPtr->type, &(pc.full_objv[i]));*/ /* * Handling slot initialize */ if (paramPtr->flags & NSF_ARG_SLOTINITIALIZE) { NsfObject *slotObject = GetSlotObject(interp, paramPtr->slotObj); if (likely(slotObject != NULL)) { Tcl_Obj *ov[1]; ov[0] = paramPtr->nameObj; result = NsfCallMethodWithArgs(interp, (Nsf_Object *)slotObject, NsfGlobalObjs[NSF_INITIALIZE], object->cmdName, 2, ov, NSF_CSC_IMMEDIATE|NSF_CM_IGNORE_PERMISSIONS); } if (result != TCL_OK) { /* * The error message was set either by GetSlotObject or by ...CallMethod... */ Nsf_PopFrameObj(interp, framePtr); goto configure_exit; } } /* * Special setter methods for invoking methods calls; handles types * "cmd", "initcmd", "alias" and "forward". */ if ((paramPtr->flags & NSF_ARG_METHOD_INVOCATION) //&& (paramPtr->flags & NSF_ARG_METHOD_CALL || object->flags & NSF_INIT_CALLED) ) { int consuming = (*paramPtr->name == '-' || paramPtr->nrArgs > 0); if (consuming && newValue == NsfGlobalObjs[NSF___UNKNOWN__]) { /* * In the case we have a consuming parameter, but we have no value * provided and not default, there is no reason to call the invocation * parameter. */ /*fprintf(stderr, "%s consuming nrargs %d no value\n", paramPtr->name, paramPtr->nrArgs);*/ continue; } if ((paramPtr->flags & NSF_ARG_INITCMD)) { // oooo; if (paramPtr->defaultValue) { /* * The "defaultValue" holds the initcmd to be executed */ Tcl_Obj *varObj = Tcl_ObjGetVar2(interp, NsfGlobalObjs[NSF_ARRAY_INITCMD], paramPtr->nameObj, 0); // TODO cleanup /*fprintf(stderr, "INITCMD isdefault %d default %s value %p var %p\n", (pc.flags[i-1] & NSF_PC_IS_DEFAULT), paramPtr->defaultValue ? ObjStr(paramPtr->defaultValue) : "NONE", ObjStr(newValue), varObj );*/ if (varObj == NULL) { /* * The variable is not set. Therefore, we assume, we have to * execute the initcmd. On success, we note the execution in the NSF_ARRAY_INITCMD * variable (usually __initcmd(name)) */ result = ParameterMethodDispatch(interp, object, paramPtr, paramPtr->defaultValue, uplevelVarFramePtr, initString, objv[pc.lastObjc], (Tcl_Obj **)&objv[pc.lastObjc + 1], objc - pc.lastObjc); if (result != TCL_OK) { Nsf_PopFrameObj(interp, framePtr); goto configure_exit; } Tcl_ObjSetVar2(interp, NsfGlobalObjs[NSF_ARRAY_INITCMD], paramPtr->nameObj, Tcl_NewIntObj(1), 0); } } else { //TODO should we require a default? } /* * if we have a new actual value, proceed to setvars */ if ((pc.flags[i-1] & NSF_PC_IS_DEFAULT) == 0) { goto setvars; } continue; } result = ParameterMethodDispatch(interp, object, paramPtr, newValue, uplevelVarFramePtr, initString, objv[pc.lastObjc], (Tcl_Obj **)&objv[pc.lastObjc + 1], objc - pc.lastObjc); if (result != TCL_OK) { Nsf_PopFrameObj(interp, framePtr); goto configure_exit; } continue; } setvars: if (newValue == NsfGlobalObjs[NSF___UNKNOWN__]) { /* * Nothing to do, we have a value setter, but no value is specified and * no default was provided. */ continue; } /* * Set the instance variable unless the last argument of the * definition is varArgs. */ if (i < paramDefs->nrParams || !pc.varArgs) { #if defined(CONFIGURE_ARGS_TRACE) fprintf(stderr, "*** %s SET %s '%s' // %p\n", ObjectName(object), ObjStr(paramPtr->nameObj), ObjStr(newValue), paramPtr->slotObj); #endif /* * Actually set instance variable with the provided value or default * value. In case, explicit invocation of the setter is needed, we call the method, which * is typically a forwarder to the slot object. */ if (paramPtr->flags & NSF_ARG_SLOTASSIGN) { NsfObject *slotObject = GetSlotObject(interp, paramPtr->slotObj); if (likely(slotObject != NULL)) { Tcl_Obj *ov[2]; ov[0] = paramPtr->nameObj; ov[1] = newValue; result = NsfCallMethodWithArgs(interp, (Nsf_Object *)slotObject, NsfGlobalObjs[NSF_ASSIGN], object->cmdName, 3, ov, NSF_CSC_IMMEDIATE); } if (result != TCL_OK) { /* * The error message was set either by GetSlotObject or by ...CallMethod... */ Nsf_PopFrameObj(interp, framePtr); goto configure_exit; } } else { Tcl_ObjSetVar2(interp, paramPtr->nameObj, NULL, newValue, TCL_LEAVE_ERR_MSG|TCL_PARSE_PART1); } } } Nsf_PopFrameObj(interp, framePtr); configure_exit: ParamDefsRefCountDecr(paramDefs); ParseContextRelease(&pc); if (result == TCL_OK) { Tcl_ResetResult(interp); } return result; } /* objectMethod cget NsfOCgetMethod { {-argName "name" -type tclobj -required 1} } */ static int NsfOCgetMethod(Tcl_Interp *interp, NsfObject *object, Tcl_Obj *nameObj) { int result, i, found = 0; NsfParsedParam parsedParam; Nsf_Param *paramPtr; NsfParamDefs *paramDefs; CallFrame frame, *framePtr = &frame, *uplevelVarFramePtr; char *nameString = ObjStr(nameObj); /* * Get the object parameter definition */ result = GetObjectParameterDefinition(interp, NsfGlobalObjs[NSF_EMPTY], object, &parsedParam); if (unlikely(result != TCL_OK)) { return result; } /* * We do not stack a plain stack fraom NSF_CSC_TYPE_PLAIN here, as we do in * NsfOConfigureMethod (but maybe we have to for full compatibility TODO: * check and compar with configure stack setup ). Therefore we pass NULL as * cscPtr to ParameterMethodForwardDispatch). */ /* * The uplevel handling is exactly the same as in NsfOConfigureMethod() and * is needed, when methods are called, which perform an upvar. */ uplevelVarFramePtr = (Tcl_CallFrame *)Tcl_Interp_varFramePtr(interp) != Tcl_Interp_framePtr(interp) ? Tcl_Interp_varFramePtr(interp) : NULL; /* * Push frame to allow invocations of [self] and make instance variables of * obj accessible as locals. */ Nsf_PushFrameObj(interp, object, framePtr); paramDefs = parsedParam.paramDefs; ParamDefsRefCountIncr(paramDefs); /* * Iterate over the parameter definitions to lookup the desired * parameter. Skip positional parameters and those with NOCONFIG settings. */ for (i = 1, paramPtr = paramDefs->paramsPtr; paramPtr->name; paramPtr++, i++) { if (*paramPtr->name != '-' || (paramPtr->flags & NSF_ARG_NOCONFIG)) { continue; } if (strcmp(nameString, paramPtr->name) == 0) { found = 1; break; } } if (!found) { result = NsfPrintError(interp, "cget: unknown configure parameter %s", nameString); goto cget_exit; } /*fprintf(stderr, "arg %s found, flags %.8x\n", nameString, paramPtr->flags);*/ /* * Check for slot invocation */ if (paramPtr->slotObj) { NsfObject *slotObject = GetSlotObject(interp, paramPtr->slotObj); Tcl_Obj *ov[1]; /* * Get instance variable via slot. */ if (uplevelVarFramePtr) { Tcl_Interp_varFramePtr(interp) = uplevelVarFramePtr; } ov[0] = paramPtr->nameObj; result = NsfCallMethodWithArgs(interp, (Nsf_Object *)slotObject, NsfGlobalObjs[NSF_GET], object->cmdName, 2, ov, NSF_CSC_IMMEDIATE); goto cget_exit; } /* * We do NOT have a slot */ if (found && paramPtr->flags & NSF_ARG_METHOD_CALL) { if (paramPtr->flags & NSF_ARG_ALIAS) { /* * It is a parameter associated with an aliased method. Invoke the * method without an argument. */ Tcl_Obj *methodObj = paramPtr->method ? paramPtr->method : paramPtr->nameObj; if (uplevelVarFramePtr) { Tcl_Interp_varFramePtr(interp) = uplevelVarFramePtr; } result = CallMethod(object, interp, methodObj, 2, 0, NSF_CSC_IMMEDIATE); } else { /* * Must be NSF_ARG_FORWARD */ assert(paramPtr->flags & NSF_ARG_FORWARD); /* since we have no cscPtr, we provide NULL */ result = ParameterMethodForwardDispatch(interp, object, paramPtr, NULL, NULL /* cscPtr */); } } else { /* * Must be a parameter associated with a variable */ int flags = (object->nsPtr) ? TCL_LEAVE_ERR_MSG|TCL_NAMESPACE_ONLY : TCL_LEAVE_ERR_MSG; Tcl_Obj *resultObj = Tcl_ObjGetVar2(interp, paramPtr->nameObj, NULL, flags); if (resultObj) { /* * The value exists */ Tcl_SetObjResult(interp, resultObj); } } cget_exit: Nsf_PopFrameObj(interp, framePtr); ParamDefsRefCountDecr(paramDefs); return result; } /* objectMethod destroy NsfODestroyMethod { } */ static int NsfODestroyMethod(Tcl_Interp *interp, NsfObject *object) { PRINTOBJ("NsfODestroyMethod", object); /* * Provide protection against destroy on base classes. */ if (unlikely(IsBaseClass(object))) { if (RUNTIME_STATE(interp)->exitHandlerDestroyRound != NSF_EXITHANDLER_ON_SOFT_DESTROY) { return NsfPrintError(interp, "cannot destroy base class %s", ObjectName(object)); } } /*fprintf(stderr,"NsfODestroyMethod %p %s flags %.6x activation %d cmd %p cmd->flags %.6x\n", object, ((Command *)object->id)->flags == 0 ? ObjectName(object) : "(deleted)", object->flags, object->activationCount, object->id, ((Command *)object->id)->flags);*/ /* * NSF_DESTROY_CALLED might be set already be DispatchDestroyMethod(), * the implicit destroy calls. It is necessary to set it here for * the explicit destroy calls in the script, which reach the * Object->destroy. */ if ((object->flags & NSF_DESTROY_CALLED) == 0) { object->flags |= NSF_DESTROY_CALLED; /*fprintf(stderr, "NsfODestroyMethod %p sets DESTROY_CALLED %.6x\n", object, object->flags);*/ } object->flags |= NSF_DESTROY_CALLED_SUCCESS; if (likely((object->flags & NSF_DURING_DELETE) == 0)) { int result; Tcl_Obj *methodObj; /*fprintf(stderr, " call dealloc on %p %s\n", object, ((Command *)object->id)->flags == 0 ? ObjectName(object) : "(deleted)");*/ if (CallDirectly(interp, &object->cl->object, NSF_c_dealloc_idx, &methodObj)) { result = DoDealloc(interp, object); } else { /*fprintf(stderr, "call dealloc\n");*/ result = NsfCallMethodWithArgs(interp, (Nsf_Object *)object->cl, methodObj, object->cmdName, 1, NULL, NSF_CSC_IMMEDIATE|NSF_CM_IGNORE_PERMISSIONS); if (unlikely(result != TCL_OK)) { /* * In case, the call of the dealloc method has failed above (e.g. NS_DYING), * we have to call dealloc manually, otherwise we have a memory leak */ /*fprintf(stderr, "*** dealloc failed for %p %s flags %.6x, retry\n", object, ObjectName(object), object->flags);*/ result = DoDealloc(interp, object); } } return result; } else { #if defined(OBJDELETION_TRACE) fprintf(stderr, " Object->destroy already during delete, don't call dealloc %p\n", object); #endif } return TCL_OK; } /* objectMethod exists NsfOExistsMethod { {-argName "varName" -required 1} } */ static int NsfOExistsMethod(Tcl_Interp *interp, NsfObject *object, CONST char *var) { Tcl_SetIntObj(Tcl_GetObjResult(interp), VarExists(interp, object, var, NULL, NSF_VAR_TRIGGER_TRACE|NSF_VAR_REQUIRE_DEFINED)); return TCL_OK; } /* objectMethod filterguard NsfOFilterGuardMethod { {-argName "filter" -required 1} {-argName "guard" -required 1 -type tclobj} } */ static int NsfOFilterGuardMethod(Tcl_Interp *interp, NsfObject *object, CONST char *filter, Tcl_Obj *guardObj) { NsfObjectOpt *opt = object->opt; if (opt && opt->objFilters) { NsfCmdList *h = CmdListFindNameInList(interp, filter, opt->objFilters); if (h) { if (h->clientData) { GuardDel((NsfCmdList *) h); } GuardAdd(h, guardObj); object->flags &= ~NSF_FILTER_ORDER_VALID; return TCL_OK; } } return NsfPrintError(interp, "filterguard: can't find filter %s on %s", filter, ObjectName(object)); } /* objectMethod instvar NsfOInstvarMethod { {-argName "args" -type allargs} } */ static int NsfOInstvarMethod(Tcl_Interp *interp, NsfObject *object, int objc, Tcl_Obj *CONST objv[]) { callFrameContext ctx = {0, NULL, NULL}; int result; if (object && (object->filterStack || object->mixinStack) ) { CallStackUseActiveFrame(interp, &ctx); } if (unlikely(Tcl_Interp_varFramePtr(interp) == NULL)) { CallStackRestoreSavedFrames(interp, &ctx); return NsfPrintError(interp, "instvar used on %s, but call-stack is not in procedure scope", ObjectName(object)); } result = NsfVarImport(interp, object, ObjStr(objv[0]), objc-1, objv+1); CallStackRestoreSavedFrames(interp, &ctx); return result; } /* objectMethod mixinguard NsfOMixinGuardMethod { {-argName "mixin" -required 1 -type tclobj} {-argName "guard" -required 1 -type tclobj} } */ static int NsfOMixinGuardMethod(Tcl_Interp *interp, NsfObject *object, Tcl_Obj *mixin, Tcl_Obj *guardObj) { NsfObjectOpt *opt = object->opt; if (opt && opt->objMixins) { Tcl_Command mixinCmd = Tcl_GetCommandFromObj(interp, mixin); if (mixinCmd) { NsfClass *mixinCl = NsfGetClassFromCmdPtr(mixinCmd); if (mixinCl) { NsfCmdList *h = CmdListFindCmdInList(mixinCmd, opt->objMixins); if (h) { if (h->clientData) { GuardDel((NsfCmdList *) h); } GuardAdd(h, guardObj); object->flags &= ~NSF_MIXIN_ORDER_VALID; return TCL_OK; } } } } return NsfPrintError(interp, "mixinguard: can't find mixin %s on %s", ObjStr(mixin), ObjectName(object)); } /* objectMethod noinit NsfONoinitMethod { } */ static int NsfONoinitMethod(Tcl_Interp *UNUSED(interp), NsfObject *object) { object->flags |= NSF_INIT_CALLED; return TCL_OK; } /* objectMethod requirenamespace NsfORequireNamespaceMethod { } */ static int NsfORequireNamespaceMethod(Tcl_Interp *interp, NsfObject *object) { RequireObjNamespace(interp, object); return TCL_OK; } /* objectMethod residualargs NsfOResidualargsMethod { {-argName "args" -type allargs} } */ static int NsfOResidualargsMethod(Tcl_Interp *interp, NsfObject *object, int objc, Tcl_Obj *CONST objv[]) { int i, start = 1, argc, nextArgc, normalArgs, result = TCL_OK, isdasharg = NO_DASH; CONST char *methodName, *nextMethodName, *initString = NULL; Tcl_Obj **argv, **nextArgv; #if 0 fprintf(stderr, "NsfOResidualargsMethod %s %2d ", ObjectName(object), objc); for(i = 0; imethods[NSF_o_init_idx]; if (initObj) { initString = ObjStr(initObj); } } for( ; i < objc; argc = nextArgc, argv = nextArgv, methodName = nextMethodName) { Tcl_ResetResult(interp); switch (isdasharg) { case SKALAR_DASH: /* Argument is a skalar with a leading dash */ { int j; nextMethodName = NULL; nextArgv = NULL; nextArgc = 0; for (j = i+1; j < objc; j++, argc++) { if ((isdasharg = IsDashArg(interp, objv[j], 1, &nextMethodName, &nextArgc, &nextArgv))) { break; } } result = CallConfigureMethod(interp, object, initString, methodName, argc+1, objv+i+1); if (result != TCL_OK) { return result; } i += argc; break; } case LIST_DASH: /* Argument is a list with a leading dash, grouping determined by list */ { i++; if (i < objc) { isdasharg = IsDashArg(interp, objv[i], 1, &nextMethodName, &nextArgc, &nextArgv); } else { nextMethodName = NULL; nextArgv = NULL; nextArgc = 0; } result = CallConfigureMethod(interp, object, initString, methodName, argc+1, argv+1); if (result != TCL_OK) { return result; } break; } default: { return NsfPrintError(interp, "%s configure: unexpected argument '%s' between parameters", ObjectName(object), ObjStr(objv[i])); } } } /* * Call init with residual args in case it was not called yet. */ result = DispatchInitMethod(interp, object, normalArgs, objv+1, 0); /* * Return the non-processed leading arguments (XOTcl convention). */ Tcl_SetObjResult(interp, Tcl_NewListObj(normalArgs, objv+1)); return result; } /* objectMethod uplevel NsfOUplevelMethod { {-argName "args" -type allargs} } */ static int NsfOUplevelMethod(Tcl_Interp *interp, NsfObject *UNUSED(object), int objc, Tcl_Obj *CONST objv[]) { int i, result = TCL_ERROR; Tcl_CallFrame *framePtr = NULL, *savedVarFramePtr; /* * Find the level to use for executing the command. */ if (objc>2) { CallFrame *cf; CONST char *frameInfo = ObjStr(objv[1]); result = TclGetFrame(interp, frameInfo, &cf); if (result == -1) { return TCL_ERROR; } framePtr = (Tcl_CallFrame *)cf; i = result+1; } else { i = 1; } objc -= i; objv += i; if (!framePtr) { NsfCallStackFindLastInvocation(interp, 1, &framePtr); if (!framePtr) { framePtr = (Tcl_CallFrame *)Tcl_Interp_varFramePtr(interp)->callerVarPtr; if (!framePtr) { framePtr = (Tcl_CallFrame *)Tcl_Interp_varFramePtr(interp); } } } savedVarFramePtr = (Tcl_CallFrame *)Tcl_Interp_varFramePtr(interp); Tcl_Interp_varFramePtr(interp) = (CallFrame *)framePtr; /* * Execute the residual arguments as a command. */ if (objc == 1) { result = Tcl_EvalObjEx(interp, objv[0], TCL_EVAL_DIRECT); } else { /* * More than one argument: concatenate them together with spaces * between, then evaluate the result. Tcl_EvalObjEx will delete * the object when it decrements its refCount after eval'ing it. */ Tcl_Obj *objPtr = Tcl_ConcatObj(objc, objv); result = Tcl_EvalObjEx(interp, objPtr, TCL_EVAL_DIRECT); } if (result == TCL_ERROR) { Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf("\n (\"uplevel\" body line %d)", Tcl_GetErrorLine(interp))); } /* * Restore the variable frame, and return. */ Tcl_Interp_varFramePtr(interp) = (CallFrame *)savedVarFramePtr; return result; } /* objectMethod upvar NsfOUpvarMethod { {-argName "args" -type allargs} } */ static int NsfOUpvarMethod(Tcl_Interp *interp, NsfObject *object, int objc, Tcl_Obj *CONST objv[]) { Tcl_Obj *frameInfoObj = NULL; int i, result = TCL_ERROR; CONST char *frameInfo; callFrameContext ctx = {0, NULL, NULL}; if (objc % 2 == 0) { frameInfo = ObjStr(objv[1]); i = 2; } else { frameInfoObj = ComputeLevelObj(interp, CALLING_LEVEL); INCR_REF_COUNT(frameInfoObj); frameInfo = ObjStr(frameInfoObj); i = 1; } if (object && (object->filterStack || object->mixinStack)) { CallStackUseActiveFrame(interp, &ctx); } for ( ; i < objc; i += 2) { result = Tcl_UpVar2(interp, frameInfo, ObjStr(objv[i]), NULL, ObjStr(objv[i+1]), 0 /*flags*/); if (result != TCL_OK) { break; } } if (frameInfoObj) { DECR_REF_COUNT(frameInfoObj); } CallStackRestoreSavedFrames(interp, &ctx); return result; } /* objectMethod volatile NsfOVolatileMethod { } */ static int NsfOVolatileMethod(Tcl_Interp *interp, NsfObject *object) { Tcl_Obj *objPtr = object->cmdName; int result = TCL_ERROR; CONST char *fullName = ObjStr(objPtr); CONST char *vn; callFrameContext ctx = {0, NULL, NULL}; if (unlikely(RUNTIME_STATE(interp)->exitHandlerDestroyRound != NSF_EXITHANDLER_OFF)) { return NsfPrintError(interp, "can't make objects volatile during shutdown"); } CallStackUseActiveFrame(interp, &ctx); vn = NSTail(fullName); if (Tcl_SetVar2(interp, vn, NULL, fullName, 0)) { NsfObjectOpt *opt = NsfRequireObjectOpt(object); /*fprintf(stderr, "### setting trace for %s on frame %p\n", fullName, Tcl_Interp_varFramePtr(interp)); NsfShowStack(interp);*/ result = Tcl_TraceVar(interp, vn, TCL_TRACE_UNSETS, (Tcl_VarTraceProc *)NsfUnsetTrace, objPtr); opt->volatileVarName = vn; } CallStackRestoreSavedFrames(interp, &ctx); if (result == TCL_OK) { INCR_REF_COUNT(objPtr); } return result; } /*********************************************************************** * End Object Methods ***********************************************************************/ /*********************************************************************** * Begin Class Methods ***********************************************************************/ static int NsfCAllocMethod_(Tcl_Interp *interp, NsfClass *cl, Tcl_Obj *nameObj, Tcl_Namespace *parentNsPtr) { CONST char *nameString = ObjStr(nameObj); NsfObject *newObj; /* * Create a new object from scratch. */ assert(isAbsolutePath(nameString)); /* TODO the following should be pushed to the outer methods (method create and alloc) instead of being checked here in the internal function */ /*fprintf(stderr, " **** class '%s' wants to alloc '%s'\n", ClassName(cl), nameString);*/ if (unlikely(NSCheckColons(nameString, 0) == 0)) { return NsfPrintError(interp, "cannot allocate object - illegal name '%s'", nameString); } if (IsMetaClass(interp, cl, 1) == 0) { /* * If the base class is an ordinary class, we create an object. */ newObj = PrimitiveOCreate(interp, nameObj, parentNsPtr, cl); } else { /* * If the base class is a meta-class, we create a class. */ newObj = (NsfObject *)PrimitiveCCreate(interp, nameObj, parentNsPtr, cl); } if (unlikely(newObj == NULL)) { return NsfPrintError(interp, "alloc failed to create '%s' " "(possibly parent namespace does not exist)", nameString); } if (NSF_DTRACE_OBJECT_ALLOC_ENABLED()) { NSF_DTRACE_OBJECT_ALLOC(ObjectName(newObj), ClassName(cl)); } Tcl_SetObjResult(interp, nameObj); return TCL_OK; } /* classMethod alloc NsfCAllocMethod { {-argName "name" -required 1 -type tclobj} } */ static int NsfCAllocMethod(Tcl_Interp *interp, NsfClass *cl, Tcl_Obj *nameObj) { CONST char *nameString = ObjStr(nameObj); Tcl_Namespace *parentNsPtr; Tcl_Obj *tmpName; int result; /* * Create a new object from scratch. */ /*fprintf(stderr, " **** class '%s' wants to alloc '%s'\n", ClassName(cl), nameString);*/ if (!NSCheckColons(nameString, 0)) { return NsfPrintError(interp, "cannot allocate object - illegal name '%s'", nameString); } /* * If the path is not absolute, we add the appropriate namespace. */ if (isAbsolutePath(nameString)) { tmpName = NULL; parentNsPtr = NULL; } else { parentNsPtr = CallingNameSpace(interp); nameObj = tmpName = NameInNamespaceObj(interp, nameString, parentNsPtr); if (strchr(nameString, ':')) { parentNsPtr = NULL; } INCR_REF_COUNT(tmpName); /*fprintf(stderr, " **** NoAbsoluteName for '%s' -> determined = '%s' parentNs %s\n", nameString, ObjStr(tmpName), parentNsPtr->fullName);*/ } result = NsfCAllocMethod_(interp, cl, nameObj, parentNsPtr); if (tmpName) { DECR_REF_COUNT(tmpName); } return result; } /* classMethod create NsfCCreateMethod { {-argName "name" -required 1} {-argName "args" -type allargs} } */ static int NsfCCreateMethod(Tcl_Interp *interp, NsfClass *cl, CONST char *specifiedName, int objc, Tcl_Obj *CONST objv[]) { NsfObject *newObject = NULL; Tcl_Obj *nameObj, *methodObj, *tmpObj = NULL; Tcl_Obj **nobjv; int result; CONST char *nameString = specifiedName; Tcl_Namespace *parentNsPtr; ALLOC_ON_STACK(Tcl_Obj*, objc, tov); if (unlikely(RUNTIME_STATE(interp)->exitHandlerDestroyRound != NSF_EXITHANDLER_OFF)) { fprintf(stderr, "### Can't create object %s during shutdown\n", ObjStr(objv[1])); return TCL_OK; /* don't fail, if this happens during destroy, it might be canceled */ } /*fprintf(stderr, "NsfCCreateMethod specifiedName %s\n", specifiedName);*/ /* * Complete the name if it is not absolute. */ if (!isAbsolutePath(nameString)) { parentNsPtr = CallingNameSpace(interp); tmpObj = NameInNamespaceObj(interp, nameString, parentNsPtr); /* * If the name contains colons, the parentNsPtr is not appropriate * for determining the parent. */ if (strchr(nameString, ':')) { parentNsPtr = NULL; } nameString = ObjStr(tmpObj); /* fprintf(stderr, " **** fixed name is '%s'\n", nameString);*/ INCR_REF_COUNT(tmpObj); memcpy(tov, objv, sizeof(Tcl_Obj *)*(objc)); tov[1] = tmpObj; nameObj = tmpObj; nobjv = tov; } else { parentNsPtr = NULL; nameObj = objv[1]; nobjv = (Tcl_Obj **)objv; } /* * Check whether we have to call recreate (i.e. when the object exists * already). First check, if was have such a command, then check, if the * command is an object. */ { Tcl_Command cmd = NSFindCommand(interp, nameString); if (cmd) { newObject = NsfGetObjectFromCmdPtr(cmd); if (newObject == NULL) { /* * We have a cmd, but no object. Don't allow to overwrite an ordinary * cmd by an nsf object. */ result = NsfPrintError(interp, "refuse to overwrite cmd %s; delete/rename it before overwriting", nameString); goto create_method_exit; } } } /*fprintf(stderr, "+++ createspecifiedName '%s', nameString '%s', newObject=%p ismeta(%s) %d, ismeta(%s) %d\n", specifiedName, nameString, newObject, ClassName(cl), IsMetaClass(interp, cl, 1), newObject ? ClassName(newObject->cl) : "NULL", newObject ? IsMetaClass(interp, newObject->cl, 1) : 0 );*/ /* * Provide protection against recreation if base classes. */ if (unlikely(newObject && unlikely(IsBaseClass(newObject)))) { result = NsfPrintError(interp, "cannot recreate base class %s", ObjectName(newObject)); goto create_method_exit; } /* * Don't allow to * - recreate an object as a class, * - recreate a class as an object, and to * - recreate an object in a different object system * * In these clases, we use destroy followed by create instead of recreate. */ if (newObject && (IsMetaClass(interp, cl, 1) == IsMetaClass(interp, newObject->cl, 1)) && GetObjectSystem(newObject) == cl->osPtr) { /*fprintf(stderr, "%%%% recreate, call recreate method ... %s, objc=%d oldOs %p != newOs %p EQ %d\n", ObjStr(nameObj), objc+1, GetObjectSystem(newObject), cl->osPtr, GetObjectSystem(newObject) != cl->osPtr ); */ /* call recreate --> initialization */ if (CallDirectly(interp, &cl->object, NSF_c_recreate_idx, &methodObj)) { result = RecreateObject(interp, cl, newObject, objc, nobjv); } else { result = CallMethod(cl, interp, methodObj, objc+1, nobjv+1, NSF_CM_IGNORE_PERMISSIONS|NSF_CSC_IMMEDIATE); } if (unlikely(result != TCL_OK)) { goto create_method_exit; } Tcl_SetObjResult(interp, newObject->cmdName); nameObj = newObject->cmdName; ObjTrace("RECREATE", newObject); } else { /* * newObject might exist here, but will be automatically destroyed by * alloc. */ /*fprintf(stderr, "alloc ... %s newObject %p \n", ObjStr(nameObj), newObject);*/ if (CallDirectly(interp, &cl->object, NSF_c_alloc_idx, &methodObj)) { result = NsfCAllocMethod_(interp, cl, nameObj, parentNsPtr); } else { result = CallMethod(cl, interp, methodObj, 3, &nameObj, NSF_CSC_IMMEDIATE); } if (unlikely(result != TCL_OK)) { goto create_method_exit; } nameObj = Tcl_GetObjResult(interp); if (unlikely(GetObjectFromObj(interp, nameObj, &newObject) != TCL_OK)) { result = NsfPrintError(interp, "couldn't find result of alloc"); goto create_method_exit; } ObjTrace("CREATE", newObject); /* in case, the object is destroyed during initialization, we incr refCount */ INCR_REF_COUNT(nameObj); result = DoObjInitialization(interp, newObject, objc, objv); /*fprintf(stderr, "DoObjInitialization %p %s (id %p) returned %d\n", newObject, ObjStr(nameObj), newObject->id, result);*/ DECR_REF_COUNT(nameObj); } create_method_exit: /*fprintf(stderr, "create -- end ... %s => %d\n", ObjStr(nameObj), result);*/ if (tmpObj) {DECR_REF_COUNT(tmpObj);} FREE_ON_STACK(Tcl_Obj *, tov); return result; } /* classMethod dealloc NsfCDeallocMethod { {-argName "object" -required 1 -type tclobj} } */ static int NsfCDeallocMethod(Tcl_Interp *interp, NsfClass *UNUSED(cl), Tcl_Obj *obj) { NsfObject *object; if (GetObjectFromObj(interp, obj, &object) != TCL_OK) { return NsfPrintError(interp, "can't destroy object %s that does not exist", ObjStr(obj)); } return DoDealloc(interp, object); } /* classMethod filterguard NsfCFilterGuardMethod { {-argName "filter" -required 1} {-argName "guard" -required 1 -type tclobj} } */ static int NsfCFilterGuardMethod(Tcl_Interp *interp, NsfClass *cl, CONST char *filter, Tcl_Obj *guardObj) { NsfClassOpt *opt = cl->opt; if (opt && opt->classFilters) { NsfCmdList *h = CmdListFindNameInList(interp, filter, opt->classFilters); if (h) { NsfClasses *subClasses = TransitiveSubClasses(cl); if (h->clientData) { GuardDel(h); } GuardAdd(h, guardObj); FilterInvalidateObjOrders(interp, cl, subClasses); NsfClassListFree(subClasses); return TCL_OK; } } return NsfPrintError(interp, "filterguard: can't find filter %s on %s", filter, ClassName(cl)); } /* classMethod getCachedParameters NsfCGetCachendParameters { } */ static int NsfCGetCachendParameters(Tcl_Interp *interp, NsfClass *class) { if (likely(class && class->parsedParamPtr)) { Tcl_Obj *listObj; listObj = ListParamDefs(interp, class->parsedParamPtr->paramDefs->paramsPtr, NSF_PARAMS_PARAMETER); Tcl_SetObjResult(interp, listObj); DECR_REF_COUNT2("paramDefsObj", listObj); } return TCL_OK; } /* classMethod mixinguard NsfCMixinGuardMethod { {-argName "mixin" -required 1 -type tclobj} {-argName "guard" -required 1 -type tclobj} } */ static int NsfCMixinGuardMethod(Tcl_Interp *interp, NsfClass *cl, Tcl_Obj *mixin, Tcl_Obj *guardObj) { NsfClassOpt *opt = cl->opt; if (opt && opt->classMixins) { Tcl_Command mixinCmd = Tcl_GetCommandFromObj(interp, mixin); if (mixinCmd) { NsfClass *mixinCl = NsfGetClassFromCmdPtr(mixinCmd); if (mixinCl) { NsfCmdList *h = CmdListFindCmdInList(mixinCmd, opt->classMixins); if (h) { NsfClasses *subClasses; if (h->clientData) { GuardDel((NsfCmdList *) h); } GuardAdd(h, guardObj); subClasses = TransitiveSubClasses(cl); MixinInvalidateObjOrders(interp, cl, subClasses); NsfClassListFree(subClasses); return TCL_OK; } } } } return NsfPrintError(interp, "mixinguard: can't find mixin %s on %s", ObjStr(mixin), ClassName(cl)); } /* classMethod new NsfCNewMethod { {-argName "-childof" -required 0 -type tclobj} {-argName "args" -required 0 -type args} } */ static int NsfCNewMethod(Tcl_Interp *interp, NsfClass *cl, Tcl_Obj *withChildof, int objc, Tcl_Obj *CONST objv[]) { Tcl_Obj *fullnameObj; int result, prefixLength; Tcl_DString dFullname, *dsPtr = &dFullname; NsfStringIncrStruct *iss = &RUNTIME_STATE(interp)->iss; /*fprintf(stderr, "NsfCNewMethod objc %d\n", objc);*/ Tcl_DStringInit(dsPtr); if (withChildof) { CONST char *parentName = ObjStr(withChildof); /* * If parentName is fully qualified, use it as prefix, else prepend the * CallingNameSpace() to be compatible with the object name completion. */ if (*parentName == ':' && *(parentName + 1) == ':') { /* * Prepend parentName only if it is not "::" */ if (*(parentName + 2) != '\0') { Tcl_DStringAppend(dsPtr, parentName, -1); } } else { Tcl_Obj *tmpName = NameInNamespaceObj(interp, parentName, CallingNameSpace(interp)); CONST char *completedParentName; INCR_REF_COUNT(tmpName); completedParentName = ObjStr(tmpName); if (strcmp(completedParentName, "::")) { Tcl_DStringAppend(dsPtr, ObjStr(tmpName), -1); } DECR_REF_COUNT(tmpName); } Tcl_DStringAppend(dsPtr, "::__#", 5); } else { Tcl_DStringAppend(dsPtr, "::nsf::__#", 10); } prefixLength = dsPtr->length; while (1) { (void)NsfStringIncr(iss); Tcl_DStringAppend(dsPtr, iss->start, iss->length); if (!Tcl_FindCommand(interp, Tcl_DStringValue(dsPtr), NULL, TCL_GLOBAL_ONLY)) { break; } /* * In case the symbol existed already, reset prefix to the * original length. */ Tcl_DStringSetLength(dsPtr, prefixLength); } fullnameObj = Tcl_NewStringObj(Tcl_DStringValue(dsPtr), Tcl_DStringLength(dsPtr)); INCR_REF_COUNT(fullnameObj); { Tcl_Obj *methodObj; int callDirectly; ALLOC_ON_STACK(Tcl_Obj*, objc+3, ov); callDirectly = CallDirectly(interp, &cl->object, NSF_c_create_idx, &methodObj); ov[0] = objv[0]; ov[1] = methodObj; ov[2] = fullnameObj; if (objc >= 1) { memcpy(ov+3, objv, sizeof(Tcl_Obj *)*objc); } if (callDirectly) { result = NsfCCreateMethod(interp, cl, ObjStr(fullnameObj), objc+2, ov+1); } else { result = ObjectDispatch(cl, interp, objc+3, ov, NSF_CSC_IMMEDIATE); } FREE_ON_STACK(Tcl_Obj *, ov); } DECR_REF_COUNT(fullnameObj); Tcl_DStringFree(dsPtr); return result; } /* classMethod recreate NsfCRecreateMethod { {-argName "name" -required 1 -type tclobj} {-argName "args" -type allargs} } */ static int RecreateObject(Tcl_Interp *interp, NsfClass *class, NsfObject *object, int objc, Tcl_Obj *CONST objv[]) { int result; object->flags |= NSF_RECREATE; /* * First, cleanup the data from the object. * * Check whether we have a pending destroy on the object; if yes, * clear it, such that the recreated object and won't be destroyed * on a POP. */ MarkUndestroyed(object); /* * Ensure correct class for object. */ result = ChangeClass(interp, object, class); if (result == TCL_OK) { Tcl_Obj *methodObj; /* * Dispatch "cleanup" method. */ if (CallDirectly(interp, object, NSF_o_cleanup_idx, &methodObj)) { /*fprintf(stderr, "RECREATE calls cleanup directly for object %s\n", ObjectName(object));*/ result = NsfOCleanupMethod(interp, object); } else { /*NsfObjectSystem *osPtr = GetObjectSystem(object); fprintf(stderr, "RECREATE calls method cleanup for object %p %s OS %s\n", object, ObjectName(object), ObjectName(&osPtr->rootClass->object));*/ result = CallMethod(object, interp, methodObj, 2, 0, NSF_CM_IGNORE_PERMISSIONS|NSF_CSC_IMMEDIATE); } } /* * Second: if cleanup was successful, initialize the object as usual. */ if (result == TCL_OK) { result = DoObjInitialization(interp, object, objc, objv); if (result == TCL_OK) { Tcl_SetObjResult(interp, object->cmdName); } else { /* fprintf(stderr, "recreate DoObjInitialization returned %d\n", result);*/ } } return result; } static int NsfCRecreateMethod(Tcl_Interp *interp, NsfClass *cl, Tcl_Obj *nameObj, int objc, Tcl_Obj *CONST objv[]) { NsfObject *object; if (GetObjectFromObj(interp, nameObj, &object) != TCL_OK) { return NsfPrintError(interp, "can't recreate non existing object %s", ObjStr(nameObj)); } return RecreateObject(interp, cl, object, objc, objv); } /* classMethod superclass NsfCSuperclassMethod { {-argName "superclasses" -required 0 -type tclobj} } */ static int NsfCSuperclassMethod(Tcl_Interp *interp, NsfClass *cl, Tcl_Obj *superclassesObj) { return NsfRelationCmd(interp, &cl->object, RelationtypeSuperclassIdx, superclassesObj); } /*********************************************************************** * End Class Methods ***********************************************************************/ static int AggregatedMethodType(int methodType) { switch (methodType) { case MethodtypeNULL: /* default */ case MethodtypeAllIdx: methodType = NSF_METHODTYPE_ALL; break; case MethodtypeScriptedIdx: /*methodType = NSF_METHODTYPE_SCRIPTED|NSF_METHODTYPE_ALIAS;*/ methodType = NSF_METHODTYPE_SCRIPTED; break; case MethodtypeBuiltinIdx: methodType = NSF_METHODTYPE_BUILTIN|NSF_METHODTYPE_OBJECT; break; case MethodtypeForwarderIdx: methodType = NSF_METHODTYPE_FORWARDER; break; case MethodtypeAliasIdx: methodType = NSF_METHODTYPE_ALIAS; break; case MethodtypeSetterIdx: methodType = NSF_METHODTYPE_SETTER; break; case MethodtypeObjectIdx: methodType = NSF_METHODTYPE_OBJECT; break; case MethodtypeNsfprocIdx: methodType = NSF_METHODTYPE_NSFPROC; break; default: methodType = 0; } return methodType; } /*********************************************************************** * Begin Object Info Methods ***********************************************************************/ /* objectInfoMethod children NsfObjInfoChildrenMethod { {-argName "-type" -required 0 -nrargs 1 -type class} {-argName "pattern" -required 0} } */ static int NsfObjInfoChildrenMethod(Tcl_Interp *interp, NsfObject *object, NsfClass *type, CONST char *pattern) { return ListChildren(interp, object, pattern, 0, type); } /* objectInfoMethod class NsfObjInfoClassMethod { } */ static int NsfObjInfoClassMethod(Tcl_Interp *interp, NsfObject *object) { Tcl_SetObjResult(interp, object->cl->object.cmdName); return TCL_OK; } /* objectInfoMethod filterguard NsfObjInfoFilterguardMethod { {-argName "filter" -required 1} } */ static int NsfObjInfoFilterguardMethod(Tcl_Interp *interp, NsfObject *object, CONST char *filter) { return object->opt ? GuardList(interp, object->opt->objFilters, filter) : TCL_OK; } /* objectInfoMethod filtermethods NsfObjInfoFiltermethodsMethod { {-argName "-guards"} {-argName "-order"} {-argName "pattern"} } */ static int NsfObjInfoFiltermethodsMethod(Tcl_Interp *interp, NsfObject *object, int withGuards, int withOrder, CONST char *pattern) { NsfObjectOpt *opt = object->opt; if (withOrder) { if (!(object->flags & NSF_FILTER_ORDER_VALID)) { FilterComputeDefined(interp, object); } return FilterInfo(interp, object->filterOrder, pattern, withGuards, 1); } return opt ? FilterInfo(interp, opt->objFilters, pattern, withGuards, 0) : TCL_OK; } /* objectInfoMethod forward NsfObjInfoForwardMethod { {-argName "-definition"} {-argName "name"} } */ static int NsfObjInfoForwardMethod(Tcl_Interp *interp, NsfObject *object, int withDefinition, CONST char *pattern) { return object->nsPtr ? ListForward(interp, Tcl_Namespace_cmdTablePtr(object->nsPtr), pattern, withDefinition) : TCL_OK; } /* objectInfoMethod hasmixin NsfObjInfoHasMixinMethod { {-argName "class" -required 1 -type class} } */ static int NsfObjInfoHasMixinMethod(Tcl_Interp *interp, NsfObject *object, NsfClass *mixinClass) { Tcl_SetBooleanObj(Tcl_GetObjResult(interp), HasMixin(interp, object, mixinClass)); return TCL_OK; } /* objectInfoMethod hasnamespace NsfObjInfoHasnamespaceMethod { } */ static int NsfObjInfoHasnamespaceMethod(Tcl_Interp *interp, NsfObject *object) { Tcl_SetBooleanObj(Tcl_GetObjResult(interp), object->nsPtr != NULL); return TCL_OK; } /* objectInfoMethod hastype NsfObjInfoHasTypeMethod { {-argName "class" -required 1 -type class} } */ static int NsfObjInfoHasTypeMethod(Tcl_Interp *interp, NsfObject *object, NsfClass *typeClass) { Tcl_SetBooleanObj(Tcl_GetObjResult(interp), IsSubType(object->cl, typeClass)); return TCL_OK; } /* objectInfoMethod is NsfObjInfoIsMethod { {-argName "objectkind" -required 1 -type "class|baseclass|metaclass"} } */ static int NsfObjInfoIsMethod(Tcl_Interp *interp, NsfObject *object, int objectkind) { int success = 0; switch (objectkind) { case ObjectkindClassIdx: success = (NsfObjectIsClass(object) > 0); break; case ObjectkindMetaclassIdx: success = NsfObjectIsClass(object) && IsMetaClass(interp, (NsfClass *)object, 1); break; case ObjectkindBaseclassIdx: success = NsfObjectIsClass(object) && IsBaseClass(object); break; } Tcl_SetIntObj(Tcl_GetObjResult(interp), success); return TCL_OK; } /* objectInfoMethod lookupfilter NsfObjInfoLookupFilterMethod { {-argName "filter" -required 1} } */ static int NsfObjInfoLookupFilterMethod(Tcl_Interp *interp, NsfObject *object, CONST char *filter) { CONST char *filterName; NsfCmdList *cmdList; NsfClass *fcl; /* * Searches for filter on [self] and returns fully qualified name if it is * not found it returns an empty string. */ Tcl_ResetResult(interp); if (!(object->flags & NSF_FILTER_ORDER_VALID)) { FilterComputeDefined(interp, object); } if (!(object->flags & NSF_FILTER_ORDER_DEFINED)) { return TCL_OK; } for (cmdList = object->filterOrder; cmdList; cmdList = cmdList->nextPtr) { filterName = Tcl_GetCommandName(interp, cmdList->cmdPtr); if (filterName[0] == filter[0] && !strcmp(filterName, filter)) { break; } } if (!cmdList) { return TCL_OK; } fcl = cmdList->clorobj; Tcl_SetObjResult(interp, MethodHandleObj((NsfObject *)fcl, !NsfObjectIsClass(&fcl->object), filterName)); return TCL_OK; } /* objectInfoMethod lookupmethod NsfObjInfoLookupMethodMethod { {-argName "name" -required 1 -type tclobj} } */ static int NsfObjInfoLookupMethodMethod(Tcl_Interp *interp, NsfObject *object, Tcl_Obj *methodObj) { NsfClass *pcl = NULL; Tcl_Command cmd = ObjectFindMethod(interp, object, methodObj, &pcl); if (cmd) { NsfObject *pobj = pcl ? &pcl->object : object; int perObject = (pcl == NULL); ListMethod(interp, pobj, pobj, ObjStr(methodObj), cmd, InfomethodsubcmdRegistrationhandleIdx, perObject); } return TCL_OK; } /* objectInfoMethod lookupmethods NsfObjInfoLookupMethodsMethod { {-argName "-callprotection" -nrargs 1 -type "all|public|protected|private" -default all} {-argName "-incontext"} {-argName "-type" -nrargs 1 -typeName "methodtype" -type "all|scripted|builtin|alias|forwarder|object|setter"} {-argName "-nomixins"} {-argName "-path" -nrargs 0} {-argName "-source" -nrargs 1 -type "all|application|system"} {-argName "pattern" -required 0} } */ static int ListMethodKeysClassList(Tcl_Interp *interp, NsfClasses *classList, int withSource, CONST char *pattern, int methodType, int withCallprotection, int withPath, Tcl_HashTable *dups, NsfObject *object, int withPer_object) { NsfClasses *pl; /* append method keys from inheritance order */ for (pl = classList; pl; pl = pl->nextPtr) { Tcl_HashTable *cmdTablePtr = Tcl_Namespace_cmdTablePtr(pl->cl->nsPtr); if (!MethodSourceMatches(withSource, pl->cl, NULL)) { continue; } ListMethodKeys(interp, cmdTablePtr, NULL, pattern, methodType, withCallprotection, withPath, dups, object, withPer_object); } return TCL_OK; } static int NsfObjInfoLookupMethodsMethod(Tcl_Interp *interp, NsfObject *object, int withCallprotection, int withIncontext, int withMethodtype, int withNomixins, int withPath, int withSource, CONST char *pattern) { int withPer_object = 1; Tcl_HashTable dupsTable, *dups = &dupsTable; int result, methodType = AggregatedMethodType(withMethodtype); /* * TODO: we could make this faster for patterns without meta-chars * by letting ListMethodKeys() to signal us when an entry was found. * we wait, until the we decided about "info methods defined" * vs. "info method search" vs. "info defined" etc. */ if (withCallprotection == CallprotectionNULL) { withCallprotection = CallprotectionPublicIdx; } if (withSource == SourceNULL) { withSource = SourceAllIdx; } Tcl_InitHashTable(dups, TCL_STRING_KEYS); if (object->nsPtr) { Tcl_HashTable *cmdTablePtr = Tcl_Namespace_cmdTablePtr(object->nsPtr); if (MethodSourceMatches(withSource, NULL, object)) { ListMethodKeys(interp, cmdTablePtr, NULL, pattern, methodType, withCallprotection, withPath, dups, object, withPer_object); } } if (!withNomixins) { if (!(object->flags & NSF_MIXIN_ORDER_VALID)) { MixinComputeDefined(interp, object); } if (object->flags & NSF_MIXIN_ORDER_DEFINED_AND_VALID) { NsfCmdList *ml; NsfClass *mixin; for (ml = object->mixinOrder; ml; ml = ml->nextPtr) { int guardOk = TCL_OK; mixin = NsfGetClassFromCmdPtr(ml->cmdPtr); assert(mixin); if (withIncontext) { if (!RUNTIME_STATE(interp)->guardCount) { guardOk = GuardCall(object, interp, ml->clientData, NULL); } } if (mixin && guardOk == TCL_OK) { Tcl_HashTable *cmdTablePtr = Tcl_Namespace_cmdTablePtr(mixin->nsPtr); if (!MethodSourceMatches(withSource, mixin, NULL)) continue; ListMethodKeys(interp, cmdTablePtr, NULL, pattern, methodType, withCallprotection, withPath, dups, object, withPer_object); } } } } result = ListMethodKeysClassList(interp, TransitiveSuperClasses(object->cl), withSource, pattern, methodType, withCallprotection, withPath, dups, object, withPer_object); Tcl_DeleteHashTable(dups); return result; } /* objectInfoMethod lookupslots NsfObjInfoLookupSlotsMethod { {-argName "-source" -nrargs 1 -type "all|application|system" -default all} {-argName "-type" -required 0 -nrargs 1 -type class} {-argName "pattern" -required 0} } */ static int NsfObjInfoLookupSlotsMethod(Tcl_Interp *interp, NsfObject *object, int withSource, NsfClass *type, CONST char *pattern) { Tcl_Obj *listObj = Tcl_NewListObj(0, NULL); NsfClasses *precendenceList, *clPtr; Tcl_HashTable slotTable; precendenceList = ComputePrecedenceList(interp, object, NULL /* pattern*/, 1, 1); if (withSource == 0) {withSource = 1;} Tcl_InitHashTable(&slotTable, TCL_STRING_KEYS); MEM_COUNT_ALLOC("Tcl_InitHashTable", &slotTable); /* * First add the per-object slot objects. */ if (MethodSourceMatches(withSource, NULL, object)) { AddSlotObjects(interp, object, "::per-object-slot", &slotTable, withSource, type, pattern, listObj); } /* * Then add the class provided slot objects. */ for (clPtr = precendenceList; clPtr; clPtr = clPtr->nextPtr) { if (MethodSourceMatches(withSource, clPtr->cl, NULL)) { AddSlotObjects(interp, &clPtr->cl->object, "::slot", &slotTable, withSource, type, pattern, listObj); } } Tcl_DeleteHashTable(&slotTable); MEM_COUNT_FREE("Tcl_InitHashTable", &slotTable); NsfClassListFree(precendenceList); Tcl_SetObjResult(interp, listObj); return TCL_OK; } /* objectInfoMethod method NsfObjInfoMethodMethod { {-argName "infomethodsubcmd" -type "args|body|definition|exists|registrationhandle|definitionhandle|origin|parameter|syntax|type|precondition|postcondition|submethods"} {-argName "name" -required 1 -type tclobj} } */ static int NsfObjInfoMethodMethod(Tcl_Interp *interp, NsfObject *object, int subcmd, Tcl_Obj *methodNameObj) { NsfObject *regObject, *defObject; CONST char *methodName1 = NULL; int fromClassNS = 0, result; Tcl_DString ds, *dsPtr = &ds; Tcl_Command cmd; Tcl_DStringInit(dsPtr); cmd = ResolveMethodName(interp, object->nsPtr, methodNameObj, dsPtr, ®Object, &defObject, &methodName1, &fromClassNS); /*fprintf(stderr, "NsfObjInfoMethodMethod method %s / %s object %p regObject %p defObject %p fromClass %d\n", ObjStr(methodNameObj), methodName1, object, regObject, defObject, fromClassNS);*/ result = ListMethod(interp, regObject ? regObject : object, defObject ? defObject : object, methodName1, cmd, subcmd, fromClassNS ? 0 : 1); Tcl_DStringFree(dsPtr); return result; } /* objectInfoMethod methods NsfObjInfoMethodsMethod { {-argName "-callprotection" -type "all|public|protected|private" -default all} {-argName "-type" -nrargs 1 -typeName "methodtype" -type "all|scripted|builtin|alias|forwarder|object|setter"} {-argName "-path" -nrargs 0} {-argName "pattern"} } */ static int NsfObjInfoMethodsMethod(Tcl_Interp *interp, NsfObject *object, int withCallproctection, int withMethodtype, int withPath, CONST char *pattern) { return ListDefinedMethods(interp, object, pattern, 1 /* per-object */, AggregatedMethodType(withMethodtype), withCallproctection, withPath); } /* objectInfoMethod mixinclasses NsfObjInfoMixinclassesMethod { {-argName "-guards"} {-argName "-heritage"} {-argName "pattern" -type objpattern} } } */ static int NsfObjInfoMixinclassesMethod(Tcl_Interp *interp, NsfObject *object, int withGuards, int withHeritage, CONST char *patternString, NsfObject *patternObj) { if (withHeritage) { if (!(object->flags & NSF_MIXIN_ORDER_VALID)) { MixinComputeDefined(interp, object); } return MixinInfo(interp, object->mixinOrder, patternString, withGuards, patternObj); } return object->opt ? MixinInfo(interp, object->opt->objMixins, patternString, withGuards, patternObj) : TCL_OK; } /* objectInfoMethod mixinguard NsfObjInfoMixinguardMethod { {-argName "mixin" -required 1} } */ static int NsfObjInfoMixinguardMethod(Tcl_Interp *interp, NsfObject *object, CONST char *mixin) { return object->opt ? GuardList(interp, object->opt->objMixins, mixin) : TCL_OK; } /* objectInfoMethod name NsfObjInfoNameMethod { } */ static int NsfObjInfoNameMethod(Tcl_Interp *interp, NsfObject *object) { Tcl_SetObjResult(interp, Tcl_NewStringObj(Tcl_GetCommandName(interp, object->id), -1)); return TCL_OK; } /* objectInfoMethod objectparameter NsfObjInfoObjectparameterMethod { {-argName "infoobjectparametersubcmd" -type "definitions|list|names|syntax" -required 1} {-argName "pattern" -required 0} } */ static int NsfObjInfoObjectparameterMethod(Tcl_Interp *interp, NsfObject *object, int subcmd, CONST char *pattern) { NsfParsedParam parsedParam; Tcl_Obj *listObj = NULL; Nsf_Param CONST *paramsPtr; Nsf_Param *paramList = NULL; int result; result = GetObjectParameterDefinition(interp, NsfGlobalObjs[NSF_EMPTY], object, &parsedParam); if (result != TCL_OK || !parsedParam.paramDefs) { return result; } paramsPtr = parsedParam.paramDefs->paramsPtr; /* * If a single parameter name is given, we construct a filtered parameter * list on the fly and provide it to the output functions. */ if (pattern) { Nsf_Param CONST *pPtr; int maxParams, nrMatchingParams; /* * Count the parameters */ for (pPtr = paramsPtr, maxParams = 0; pPtr->name; pPtr++, maxParams++); /* * Allocate the number of potentional matches */ paramList = ParamsNew(maxParams); for (pPtr = paramsPtr, nrMatchingParams = 0; pPtr->name; pPtr++) { if (Tcl_StringMatch( ObjStr(pPtr->nameObj), pattern)) { paramList[nrMatchingParams] = *pPtr; nrMatchingParams++; } } if (nrMatchingParams == 0) { /* * The named parameter were NOT found, so return "". */ Tcl_SetObjResult(interp, NsfGlobalObjs[NSF_EMPTY]); FREE(Nsf_Param*, paramList); return TCL_OK; } /* iterate over the computed selection */ paramsPtr = paramList; } switch (subcmd) { case InfoobjectparametersubcmdDefinitionsIdx: listObj = ParamDefsFormat(interp, paramsPtr); break; case InfoobjectparametersubcmdListIdx: listObj = ParamDefsList(interp, paramsPtr); break; case InfoobjectparametersubcmdNamesIdx: listObj = ParamDefsNames(interp, paramsPtr); break; case InfoobjectparametersubcmdSyntaxIdx: listObj = NsfParamDefsSyntax(paramsPtr); break; } assert(listObj); Tcl_SetObjResult(interp, listObj); DECR_REF_COUNT2("paramDefsObj", listObj); if (paramList) { FREE(Nsf_Param*, paramList); } return TCL_OK; } /* objectInfoMethod parent NsfObjInfoParentMethod { } */ static int NsfObjInfoParentMethod(Tcl_Interp *interp, NsfObject *object) { if (object->id) { Tcl_Namespace *nsPtr = Tcl_Command_nsPtr(object->id); Tcl_SetResult(interp, nsPtr ? nsPtr->fullName : "", TCL_VOLATILE); } return TCL_OK; } /* objectInfoMethod precedence NsfObjInfoPrecedenceMethod { {-argName "-intrinsic"} {-argName "pattern" -required 0} } */ static int NsfObjInfoPrecedenceMethod(Tcl_Interp *interp, NsfObject *object, int withIntrinsicOnly, CONST char *pattern) { NsfClasses *precedenceList, *pl; Tcl_Obj *resultObj = Tcl_NewObj(); precedenceList = ComputePrecedenceList(interp, object, pattern, !withIntrinsicOnly, 1); for (pl = precedenceList; pl; pl = pl->nextPtr) { Tcl_ListObjAppendElement(interp, resultObj, pl->cl->object.cmdName); } NsfClassListFree(precedenceList); Tcl_SetObjResult(interp, resultObj); return TCL_OK; } /* objectInfoMethod slotobjects NsfObjInfoSlotobjectsMethod { {-argName "-type" -required 0 -nrargs 1 -type class} {-argName "pattern" -required 0} } */ static int NsfObjInfoSlotobjectsMethod(Tcl_Interp *interp, NsfObject *object, NsfClass *type, CONST char *pattern) { Tcl_Obj *listObj = Tcl_NewListObj(0, NULL); AddSlotObjects(interp, object, "::per-object-slot", NULL, SourceAllIdx, type, pattern, listObj); Tcl_SetObjResult(interp, listObj); return TCL_OK; } /* objectInfoMethod vars NsfObjInfoVarsMethod { {-argName "pattern" -required 0} } */ static int NsfObjInfoVarsMethod(Tcl_Interp *interp, NsfObject *object, CONST char *pattern) { Tcl_Obj *varList, *okList, *element; int i, length; TclVarHashTable *varTablePtr = object->nsPtr ? Tcl_Namespace_varTablePtr(object->nsPtr) : object->varTablePtr; ListVarKeys(interp, TclVarHashTablePtr(varTablePtr), pattern); varList = Tcl_GetObjResult(interp); Tcl_ListObjLength(interp, varList, &length); okList = Tcl_NewListObj(0, NULL); for (i=0; iopt ? GuardList(interp, class->opt->classFilters, filter) : TCL_OK; } /* classInfoMethod filtermethods NsfClassInfoFiltermethodsMethod { {-argName "-guards"} {-argName "pattern"} } */ static int NsfClassInfoFiltermethodsMethod(Tcl_Interp *interp, NsfClass *class, int withGuards, CONST char *pattern) { return class->opt ? FilterInfo(interp, class->opt->classFilters, pattern, withGuards, 0) : TCL_OK; } /* classInfoMethod forward NsfClassInfoForwardMethod { {-argName "-definition"} {-argName "name"} } */ static int NsfClassInfoForwardMethod(Tcl_Interp *interp, NsfClass *class, int withDefinition, CONST char *pattern) { return ListForward(interp, Tcl_Namespace_cmdTablePtr(class->nsPtr), pattern, withDefinition); } /* classInfoMethod heritage NsfClassInfoHeritageMethod { {-argName "pattern"} } */ static int NsfClassInfoHeritageMethod(Tcl_Interp *interp, NsfClass *cl, CONST char *pattern) { NsfClasses *pl, *intrinsic, *checkList = NULL, *mixinClasses = NULL; Tcl_Obj *resultObj; resultObj = Tcl_NewObj(); intrinsic = TransitiveSuperClasses(cl); NsfClassListAddPerClassMixins(interp, cl, &mixinClasses, &checkList); for (pl = mixinClasses; pl; pl = pl->nextPtr) { if (NsfClassListFind(pl->nextPtr, pl->cl) == NULL && NsfClassListFind(intrinsic, pl->cl) == NULL) { AppendMatchingElement(interp, resultObj, pl->cl->object.cmdName, pattern); } } if (intrinsic) { for (pl = intrinsic->nextPtr; pl; pl = pl->nextPtr) { AppendMatchingElement(interp, resultObj, pl->cl->object.cmdName, pattern); } } NsfClassListFree(mixinClasses); NsfClassListFree(checkList); Tcl_SetObjResult(interp, resultObj); return TCL_OK; } /* *---------------------------------------------------------------------- * * InstancesFromClassList -- * * Collect all instances of the classes of the provided class list in the * returned result object. * * Results: * Tcl_Obj containing a list of instances or a single instance * * Side effects: * Updated resultObj. * *---------------------------------------------------------------------- */ static Tcl_Obj * InstancesFromClassList(Tcl_Interp *interp, NsfClasses *subClasses, CONST char *pattern, NsfObject *matchObject) { NsfClasses *clPtr; Tcl_Obj *resultObj = Tcl_NewObj(); for (clPtr = subClasses; clPtr; clPtr = clPtr->nextPtr) { Tcl_HashTable *tablePtr = &clPtr->cl->instances; Tcl_HashEntry *hPtr; Tcl_HashSearch search; for (hPtr = Tcl_FirstHashEntry(tablePtr, &search); hPtr; hPtr = Tcl_NextHashEntry(&search)) { NsfObject *inst = (NsfObject *) Tcl_GetHashKey(tablePtr, hPtr); if (matchObject && inst == matchObject) { Tcl_SetStringObj(resultObj, ObjStr(matchObject->cmdName), -1); return resultObj; } AppendMatchingElement(interp, resultObj, inst->cmdName, pattern); } } return resultObj; } /* classInfoMethod instances NsfClassInfoInstancesMethod { {-argName "-closure" -nrargs 0} {-argName "pattern" -type objpattern} } */ static int NsfClassInfoInstancesMethod(Tcl_Interp *interp, NsfClass *startCl, int withClosure, CONST char *pattern, NsfObject *matchObject) { NsfClasses clElement, *subClasses; if (withClosure) { subClasses = TransitiveSubClasses(startCl); } else { subClasses = &clElement; clElement.cl = startCl; clElement.nextPtr = NULL; } Tcl_SetObjResult(interp, InstancesFromClassList(interp, subClasses, pattern, matchObject)); if (withClosure) { NsfClassListFree(subClasses); } return TCL_OK; } /* classInfoMethod method NsfClassInfoMethodMethod { {-argName "infomethodsubcmd" -type "args|body|definition|exists|registrationhandle|definitionhandle|origin|parameter|syntax|type|precondition|postcondition|submethods|returns"} {-argName "name" -required 1 -type tclobj} } */ static int NsfClassInfoMethodMethod(Tcl_Interp *interp, NsfClass *class, int subcmd, Tcl_Obj *methodNameObj) { NsfObject *regObject, *defObject; CONST char *methodName1 = NULL; int fromClassNS = 1, result; Tcl_DString ds, *dsPtr = &ds; Tcl_Command cmd; Tcl_DStringInit(dsPtr); cmd = ResolveMethodName(interp, class->nsPtr, methodNameObj, dsPtr, ®Object, &defObject, &methodName1, &fromClassNS); /*fprintf(stderr, "NsfClassInfoMethodMethod object %p regObject %p defObject %p %s fromClass %d cmd %p method %s\n", &class->object, regObject, defObject, ObjectName(defObject), fromClassNS, cmd, methodName1);*/ result = ListMethod(interp, regObject ? regObject : &class->object, defObject ? defObject : &class->object, methodName1, cmd, subcmd, fromClassNS ? 0 : 1); Tcl_DStringFree(dsPtr); return result; } /* classInfoMethod methods NsfClassInfoMethodsMethod { {-argName "-callprotection" -type "all|public|protected|private" -default all} {-argName "-closure" -nrargs 0} {-argName "-type" -typeName "methodtype" -nrargs 1 -type "all|scripted|builtin|alias|forwarder|object|setter"} {-argName "-path" -nrargs 0} {-argName "-source" -nrargs 1 -type "all|application|system"} {-argName "pattern"} } */ static int NsfClassInfoMethodsMethod(Tcl_Interp *interp, NsfClass *class, int withCallprotection, int withClosure, int withMethodtype, int withPath, int withSource, CONST char *pattern) { if (withClosure) { NsfClasses *checkList = NULL, *mixinClasses = NULL; Tcl_HashTable dupsTable, *dups = &dupsTable; int result; #if 0 if (withCallprotection == CallprotectionNULL) { withCallprotection = CallprotectionPublicIdx; } #endif if (withSource == SourceNULL) { withSource = SourceAllIdx; } Tcl_InitHashTable(dups, TCL_STRING_KEYS); /* guards are ignored */ NsfClassListAddPerClassMixins(interp, class, &mixinClasses, &checkList); (void) ListMethodKeysClassList(interp, mixinClasses, withSource, pattern, AggregatedMethodType(withMethodtype), withCallprotection, withPath, dups, &class->object, 0); NsfClassListFree(checkList); NsfClassListFree(mixinClasses); result = ListMethodKeysClassList(interp, TransitiveSuperClasses(class), withSource, pattern, AggregatedMethodType(withMethodtype), withCallprotection, withPath, dups, &class->object, 0); Tcl_DeleteHashTable(dups); return result; } else { if (withSource) { return NsfPrintError(interp, "-source cannot be used without -closure\n"); } return ListDefinedMethods(interp, &class->object, pattern, 0 /* per-object */, AggregatedMethodType(withMethodtype), withCallprotection, withPath); } } /* classInfoMethod mixinclasses NsfClassInfoMixinclassesMethod { {-argName "-closure" -nrargs 0} {-argName "-guards"} {-argName "-heritage"} {-argName "pattern" -type objpattern} } */ static int NsfClassInfoMixinclassesMethod(Tcl_Interp *interp, NsfClass *class, int withClosure, int withGuards, int withHeritage, CONST char *patternString, NsfObject *patternObj) { NsfClassOpt *opt = class->opt; Tcl_Obj *resultObj; int result = TCL_OK; Tcl_ResetResult(interp); resultObj = Tcl_GetObjResult(interp); if (withHeritage) { NsfClasses *checkList = NULL, *mixinClasses = NULL, *clPtr; if (withGuards) { return NsfPrintError(interp, "-guards cannot be used together with -heritage\n"); } NsfClassListAddPerClassMixins(interp, class, &mixinClasses, &checkList); for (clPtr = mixinClasses; clPtr; clPtr = clPtr->nextPtr) { if (NsfClassListFind(clPtr->nextPtr, clPtr->cl)) continue; AppendMatchingElement(interp, resultObj, clPtr->cl->object.cmdName, patternString); } NsfClassListFree(checkList); NsfClassListFree(mixinClasses); } else if (withClosure) { Tcl_HashTable objTable, *commandTable = &objTable; int rc; MEM_COUNT_ALLOC("Tcl_InitHashTable", commandTable); Tcl_InitHashTable(commandTable, TCL_ONE_WORD_KEYS); rc = GetAllClassMixins(interp, commandTable, resultObj, class, withGuards, patternString, patternObj); if (patternObj && rc && !withGuards) { Tcl_SetObjResult(interp, rc ? patternObj->cmdName : NsfGlobalObjs[NSF_EMPTY]); } Tcl_DeleteHashTable(commandTable); MEM_COUNT_FREE("Tcl_InitHashTable", commandTable); } else { result = opt ? MixinInfo(interp, opt->classMixins, patternString, withGuards, patternObj) : TCL_OK; } return result; } /* classInfoMethod mixinguard NsfClassInfoMixinguardMethod { {-argName "mixin" -required 1} } */ static int NsfClassInfoMixinguardMethod(Tcl_Interp *interp, NsfClass *class, CONST char *mixin) { return class->opt ? GuardList(interp, class->opt->classMixins, mixin) : TCL_OK; } /* classInfoMethod mixinof NsfClassInfoMixinOfMethod { {-argName "-closure" -nrargs 0} {-argName "-scope" -required 0 -nrargs 1 -type "all|class|object"} {-argName "pattern" -type objpattern} } */ static int NsfClassInfoMixinOfMethod(Tcl_Interp *interp, NsfClass *class, int withClosure, int withScope, CONST char *patternString, NsfObject *patternObj) { NsfClassOpt *opt = class->opt; int perClass, perObject, rc = TCL_OK; Tcl_Obj *resultObj; Tcl_ResetResult(interp); resultObj = Tcl_GetObjResult(interp); if (withScope == ScopeNULL || withScope == ScopeAllIdx) { perClass = 1; perObject = 1; } else if (withScope == ScopeClassIdx) { perClass = 1; perObject = 0; } else { perClass = 0; perObject = 1; } if (opt && !withClosure) { if (perClass) { rc = AppendMatchingElementsFromCmdList(interp, opt->isClassMixinOf, resultObj, patternString, patternObj); if (rc && patternObj) {goto finished;} } if (perObject) { rc = AppendMatchingElementsFromCmdList(interp, opt->isObjectMixinOf, resultObj, patternString, patternObj); } } else if (withClosure) { Tcl_HashTable objTable, *commandTable = &objTable; MEM_COUNT_ALLOC("Tcl_InitHashTable", commandTable); Tcl_InitHashTable(commandTable, TCL_ONE_WORD_KEYS); if (perClass) { rc = GetAllClassMixinsOf(interp, commandTable, resultObj, class, 0, 1, patternString, patternObj); if (rc && patternObj) {goto finished;} } if (perObject) { rc = GetAllObjectMixinsOf(interp, commandTable, resultObj, class, 0, 1, patternString, patternObj); } Tcl_DeleteHashTable(commandTable); MEM_COUNT_FREE("Tcl_InitHashTable", commandTable); } finished: if (patternObj) { Tcl_SetObjResult(interp, rc ? patternObj->cmdName : NsfGlobalObjs[NSF_EMPTY]); } else { Tcl_SetObjResult(interp, resultObj); } return TCL_OK; } /* classInfoMethod slots NsfClassInfoSlotobjectsMethod { {-argName "-closure" -nrargs 0} {-argName "-source" -nrargs 1 -type "all|application|system"} {-argName "-type" -required 0 -nrargs 1 -type class} {-argName "pattern" -required 0} } */ static int NsfClassInfoSlotobjectsMethod(Tcl_Interp *interp, NsfClass *class, int withClosure, int withSource, NsfClass *type, CONST char *pattern) { NsfClasses *clPtr, *intrinsicClasses, *precedenceList = NULL; Tcl_Obj *listObj = Tcl_NewListObj(0, NULL); Tcl_HashTable slotTable; Tcl_ResetResult(interp); intrinsicClasses = TransitiveSuperClasses(class); if (withClosure) { NsfClasses *checkList = NULL, *mixinClasses = NULL; /* * Compute the closure: first the transitive mixin-classes... */ NsfClassListAddPerClassMixins(interp, class, &mixinClasses, &checkList); for (clPtr = mixinClasses; clPtr; clPtr = clPtr->nextPtr) { if (NsfClassListFind(clPtr->nextPtr, clPtr->cl) == NULL && NsfClassListFind(intrinsicClasses, clPtr->cl) == NULL) { NsfClassListAdd(&precedenceList, clPtr->cl, NULL); } } /* * ... followed by the intrinsic classes. */ NsfClassListAdd(&precedenceList, class, NULL); for (clPtr = intrinsicClasses->nextPtr; clPtr; clPtr = clPtr->nextPtr) { NsfClassListAdd(&precedenceList, clPtr->cl, NULL); } NsfClassListFree(checkList); NsfClassListFree(mixinClasses); } else { NsfClassListAdd(&precedenceList, class, NULL); } /* NsfClassListPrint("precedence", precedenceList);*/ if (withSource == 0) {withSource = 1;} /* * Use a hash-table to eliminate potential duplicates. */ Tcl_InitHashTable(&slotTable, TCL_STRING_KEYS); MEM_COUNT_ALLOC("Tcl_InitHashTable", &slotTable); for (clPtr = precedenceList; clPtr; clPtr = clPtr->nextPtr) { if (MethodSourceMatches(withSource, clPtr->cl, NULL)) { AddSlotObjects(interp, &clPtr->cl->object, "::slot", &slotTable, withSource, type, pattern, listObj); } } Tcl_DeleteHashTable(&slotTable); MEM_COUNT_FREE("Tcl_InitHashTable", &slotTable); NsfClassListFree(precedenceList); Tcl_SetObjResult(interp, listObj); return TCL_OK; } /* classInfoMethod subclass NsfClassInfoSubclassMethod { {-argName "-closure" -nrargs 0} {-argName "pattern" -type objpattern} } */ static int NsfClassInfoSubclassMethod(Tcl_Interp *interp, NsfClass *class, int withClosure, CONST char *patternString, NsfObject *patternObj) { int rc; if (withClosure) { NsfClasses *subClasses = TransitiveSubClasses(class); rc = AppendMatchingElementsFromClasses(interp, subClasses ? subClasses->nextPtr : NULL, patternString, patternObj); NsfClassListFree(subClasses); } else { rc = AppendMatchingElementsFromClasses(interp, class->sub, patternString, patternObj); } if (patternObj) { Tcl_SetObjResult(interp, rc ? patternObj->cmdName : NsfGlobalObjs[NSF_EMPTY]); } return TCL_OK; } /* classInfoMethod superclass NsfClassInfoSuperclassMethod { {-argName "-closure" -nrargs 0} {-argName "pattern" -type tclobj} } */ static int NsfClassInfoSuperclassMethod(Tcl_Interp *interp, NsfClass *class, int withClosure, Tcl_Obj *pattern) { return ListSuperclasses(interp, class, pattern, withClosure); } /*********************************************************************** * End Class Info methods ***********************************************************************/ /* * Initialization and Exit handlers */ #ifdef DO_FULL_CLEANUP /* delete global variables and procs */ static void DeleteProcsAndVars(Tcl_Interp *interp, Tcl_Namespace *nsPtr, int withKeepvars) { Tcl_HashTable *varTablePtr, *cmdTablePtr, *childTablePtr; Tcl_HashSearch search; Tcl_Command cmd; Var *varPtr; register Tcl_HashEntry *entryPtr; assert(nsPtr); /* fprintf(stderr, "DeleteProcsAndVars in %s\n", nsPtr->fullName); */ varTablePtr = (Tcl_HashTable *)Tcl_Namespace_varTablePtr(nsPtr); cmdTablePtr = Tcl_Namespace_cmdTablePtr(nsPtr); childTablePtr = Tcl_Namespace_childTablePtr(nsPtr); /* * Deleting the procs and vars in the child namespaces does not seem to be * necessary, but we do it anyway. */ for (entryPtr = Tcl_FirstHashEntry(childTablePtr, &search); entryPtr; entryPtr = Tcl_NextHashEntry(&search)) { Tcl_Namespace *childNsPtr = (Tcl_Namespace *) Tcl_GetHashValue(entryPtr); DeleteProcsAndVars(interp, childNsPtr, withKeepvars); } if (!withKeepvars) { for (entryPtr = Tcl_FirstHashEntry(varTablePtr, &search); entryPtr; entryPtr = Tcl_NextHashEntry(&search)) { Tcl_Obj *nameObj; GetVarAndNameFromHash(entryPtr, &varPtr, &nameObj); if (!TclIsVarUndefined(varPtr) || TclIsVarNamespaceVar(varPtr)) { /* fprintf(stderr, "unsetting var %s\n", ObjStr(nameObj));*/ Tcl_UnsetVar2(interp, ObjStr(nameObj), (char *)NULL, TCL_GLOBAL_ONLY); } } } for (entryPtr = Tcl_FirstHashEntry(cmdTablePtr, &search); entryPtr; entryPtr = Tcl_NextHashEntry(&search)) { cmd = (Tcl_Command)Tcl_GetHashValue(entryPtr); if (Tcl_Command_objProc(cmd) == RUNTIME_STATE(interp)->objInterpProc) { /*fprintf(stderr, "cmdname = %s cmd %p proc %p objProc %p %d\n", Tcl_GetHashKey(cmdTablePtr, entryPtr), cmd, Tcl_Command_proc(cmd), Tcl_Command_objProc(cmd), Tcl_Command_proc(cmd)==RUNTIME_STATE(interp)->objInterpProc);*/ Tcl_DeleteCommandFromToken(interp, cmd); } } } #endif /* *---------------------------------------------------------------------- * * FinalObjectDeletion -- * * The method is to be called, when an object is finally deleted, * typically during the final cleanup. It tests as well the actication * count of the object. * * Results: * None. * * Side effects: * Deletion of the objects. * *---------------------------------------------------------------------- */ static void FinalObjectDeletion(Tcl_Interp *interp, NsfObject *object) { /* * If a call to exit happens from a higher stack frame, the object * refCount might not be decremented correctly. If we are in the * physical destroy round, we can set the counter to an appropriate * value to ensure deletion. */ if (unlikely(object->refCount != 1)) { if (object->refCount > 1) { NsfLog(interp, NSF_LOG_WARN, "Have to fix refCount for obj %p refCount %d (name %s)", object, object->refCount, ObjectName(object)); } else { NsfLog(interp, NSF_LOG_WARN, "Have to fix refCount for obj %p refCount %d", object, object->refCount); } object->refCount = 1; } #if !defined(NDEBUG) if (unlikely(object->activationCount != 0)) { fprintf(stderr, "FinalObjectDeletion obj %p activationcount %d\n", object, object->activationCount); } #endif assert(object->activationCount == 0); if (likely(object->id != NULL)) { /*fprintf(stderr, " ... cmd dealloc %p final delete refCount %d\n", object->id, Tcl_Command_refCount(object->id));*/ if (NSF_DTRACE_OBJECT_FREE_ENABLED()) { NSF_DTRACE_OBJECT_FREE(ObjectName(object), ClassName(object->cl)); } Tcl_DeleteCommandFromToken(interp, object->id); } } #ifdef DO_CLEANUP /* *---------------------------------------------------------------------- * * DeleteNsfProcs -- * * Delete all nsfprocs in the namespaces rooted by the second * argument. If it is NULL, the globale namespace is used a root of the * namespace tree. The function is necessary to trigger the freeing of * the parameter definitions. * * Results: * None. * * Side effects: * Deletion of nsfprocs. * *---------------------------------------------------------------------- */ static void DeleteNsfProcs(Tcl_Interp *interp, Tcl_Namespace *nsPtr) { Tcl_HashTable *cmdTablePtr, *childTablePtr; register Tcl_HashEntry *entryPtr; Tcl_HashSearch search; Tcl_Command cmd; if (nsPtr == NULL) { nsPtr = Tcl_GetGlobalNamespace(interp); } assert(nsPtr); /*fprintf(stderr, "### DeleteNsfProcs current namespace '%s'\n", nsPtr ? nsPtr->fullName : "NULL");*/ cmdTablePtr = Tcl_Namespace_cmdTablePtr(nsPtr); childTablePtr = Tcl_Namespace_childTablePtr(nsPtr); for (entryPtr = Tcl_FirstHashEntry(cmdTablePtr, &search); entryPtr; entryPtr = Tcl_NextHashEntry(&search)) { cmd = (Tcl_Command)Tcl_GetHashValue(entryPtr); if (Tcl_Command_objProc(cmd) == NsfProcStub) { /*fprintf(stderr, "cmdname = %s cmd %p\n", Tcl_GetHashKey(cmdTablePtr, entryPtr), cmd);*/ Tcl_DeleteCommandFromToken(interp, cmd); } } for (entryPtr = Tcl_FirstHashEntry(childTablePtr, &search); entryPtr; entryPtr = Tcl_NextHashEntry(&search)) { Tcl_Namespace *childNsPtr = (Tcl_Namespace *) Tcl_GetHashValue(entryPtr); DeleteNsfProcs(interp, childNsPtr); } } /* *---------------------------------------------------------------------- * * ClassHasSubclasses -- * * Check, whether the given class has subclasses. * * Results: * boolean * * Side effects: * None. * *---------------------------------------------------------------------- */ static int ClassHasSubclasses(NsfClass *cl) { return (cl->sub != NULL); } /* *---------------------------------------------------------------------- * * ClassHasInstances -- * * Check, whether the given class has instances. * * Results: * boolean * * Side effects: * None. * *---------------------------------------------------------------------- */ static int ClassHasInstances(NsfClass *cl) { Tcl_HashSearch hSrch; return (Tcl_FirstHashEntry(&cl->instances, &hSrch) != NULL); } /* *---------------------------------------------------------------------- * * ObjectHasChildren -- * * Check, whether the given object has children * * Results: * boolean * * Side effects: * None. * *---------------------------------------------------------------------- */ static int ObjectHasChildren(NsfObject *object) { Tcl_Namespace *ns = object->nsPtr; int result = 0; if (ns) { Tcl_HashEntry *hPtr; Tcl_HashSearch hSrch; Tcl_HashTable *cmdTablePtr = Tcl_Namespace_cmdTablePtr(ns); for (hPtr = Tcl_FirstHashEntry(cmdTablePtr, &hSrch); hPtr; hPtr = Tcl_NextHashEntry(&hSrch)) { Tcl_Command cmd = Tcl_GetHashValue(hPtr); NsfObject *childObject = NsfGetObjectFromCmdPtr(cmd); if (childObject) { result = 1; break; } } } return result; } static void FreeAllNsfObjectsAndClasses(Tcl_Interp *interp, NsfCmdList **instances) { NsfCmdList *entry, *lastEntry; int deleted = 0; /*fprintf(stderr, "FreeAllNsfObjectsAndClasses in %p\n", interp);*/ RUNTIME_STATE(interp)->exitHandlerDestroyRound = NSF_EXITHANDLER_ON_PHYSICAL_DESTROY; /* * First delete all child commands of all objects, which are not * objects themselves. This will for example delete namespace * imported commands and objects and will resolve potential loops in * the dependency graph. The result is a plain object/class tree. */ for (entry = *instances; entry; entry = entry->nextPtr) { NsfObject *object = (NsfObject *)entry->clorobj; /* delete per-object methods */ if (object && object->nsPtr) { Tcl_HashEntry *hPtr; Tcl_HashSearch hSrch; for (hPtr = Tcl_FirstHashEntry(Tcl_Namespace_cmdTablePtr(object->nsPtr), &hSrch); hPtr; hPtr = Tcl_NextHashEntry(&hSrch)) { Tcl_Command cmd = Tcl_GetHashValue(hPtr); if (cmd) { if (CmdIsNsfObject(cmd)) { AliasDeleteObjectReference(interp, cmd); continue; } Tcl_DeleteCommandFromToken(interp, cmd); deleted ++; } } } /* * Delete class methods; these methods might have aliases (dependencies) to * objects, which will resolved this way. */ if (object && NsfObjectIsClass(object)) { Tcl_HashEntry *hPtr; Tcl_HashSearch hSrch; for (hPtr = Tcl_FirstHashEntry(Tcl_Namespace_cmdTablePtr(((NsfClass *)object)->nsPtr), &hSrch); hPtr; hPtr = Tcl_NextHashEntry(&hSrch)) { Tcl_Command cmd = Tcl_GetHashValue(hPtr); if (cmd && CmdIsNsfObject(cmd)) { AliasDeleteObjectReference(interp, cmd); continue; } } } } /*fprintf(stderr, "deleted %d cmds\n", deleted);*/ /* * Finally delete the object/class tree in a bottom up manner, * deleting all objects without dependencies first. Finally, only * the root classes of the object system will remain, which are * deleted separately. */ while (1) { /* * Delete all plain objects without dependencies. */ deleted = 0; for (entry = *instances, lastEntry = NULL; entry; lastEntry = entry, entry = entry->nextPtr) { NsfObject *object = (NsfObject *)entry->clorobj; /* * The list of the instances should contain only alive objects, without * duplicates. We would recognize duplicates since a deletion of one * object would trigger the CMD_IS_DELETED flag of the cmdPtr of the * duplicate. */ assert((Tcl_Command_flags(entry->cmdPtr) & CMD_IS_DELETED) == 0); if (object && !NsfObjectIsClass(object) && !ObjectHasChildren(object)) { /*fprintf(stderr, "check %p obj->flags %.6x cmd %p deleted %d\n", object, object->flags, entry->cmdPtr, Tcl_Command_flags(entry->cmdPtr) & CMD_IS_DELETED); */ assert(object->id); /*fprintf(stderr, " ... delete object %s %p, class=%s id %p ns %p\n", ObjectName(object), object, ClassName(object->cl), object->id, object->nsPtr);*/ FreeUnsetTraceVariable(interp, object); FinalObjectDeletion(interp, object); if (entry == *instances) { *instances = entry->nextPtr; CmdListDeleteCmdListEntry(entry, NULL); entry = *instances; } else { lastEntry->nextPtr = entry->nextPtr; CmdListDeleteCmdListEntry(entry, NULL); entry = lastEntry; } assert(entry); deleted++; } } /*fprintf(stderr, "deleted %d Objects without dependencies\n", deleted);*/ if (deleted > 0) { continue; } /* * Delete all classes without dependencies. */ for (entry = *instances, lastEntry = NULL; entry; lastEntry = entry, entry = entry->nextPtr) { NsfClass *cl = entry->clorobj; assert(cl); if (!NsfObjectIsClass(&cl->object)) { continue; } /*fprintf(stderr, "cl key = %s %p\n", ClassName(cl), cl); */ if (cl && !ObjectHasChildren((NsfObject *)cl) && !ClassHasInstances(cl) && !ClassHasSubclasses(cl) && !IsBaseClass(&cl->object) ) { /*fprintf(stderr, " ... delete class %s %p\n", ClassName(cl), cl); */ assert(cl->object.id); FreeUnsetTraceVariable(interp, &cl->object); FinalObjectDeletion(interp, &cl->object); if (entry == *instances) { *instances = entry->nextPtr; /*fprintf(stderr, "... delete first entry %p\n", entry);*/ CmdListDeleteCmdListEntry(entry, NULL); entry = *instances; } else { /*fprintf(stderr, "... delete entry %p\n", entry);*/ lastEntry->nextPtr = entry->nextPtr; CmdListDeleteCmdListEntry(entry, NULL); entry = lastEntry; } deleted++; } } /*fprintf(stderr, "deleted %d Classes\n", deleted);*/ if (deleted == 0) { int reclassed = 0; /* * Final check. If there are no cyclical dependencies, we should have * now just the the base classes left. If this is not the case, reclass * the remaining objects to their base classes, and set the superclasses * to the most general superclass. */ for (entry = *instances; entry; entry = entry->nextPtr) { NsfObject *object = (NsfObject *)entry->clorobj; NsfClass *baseClass; NsfObjectSystem *osPtr; if (NsfObjectIsClass(object) && IsBaseClass(object)) { continue; } osPtr = GetObjectSystem(object); /* * For classes, check the superclass hierarchy. */ if (NsfObjectIsClass(object)) { NsfClass *cl = (NsfClass *)object; NsfClasses *sc; for (sc = cl->super; sc; sc = sc->nextPtr) { if (sc->cl != osPtr->rootClass) { Tcl_Obj *objectName = osPtr->rootClass->object.cmdName; SuperclassAdd(interp, cl, 1, &objectName, objectName, cl->object.cl); reclassed ++; break; } } } /* * In all cases, straigthen the class to the base case. */ baseClass = NsfObjectIsClass(object) ? osPtr->rootMetaClass : osPtr->rootClass; if (object->cl != baseClass) { ChangeClass(interp, object, baseClass); reclassed ++; } } /*fprintf(stderr, "We have reclassed %d objects\n", reclassed);*/ if (reclassed == 0) { break; } } } } #endif /* DO_CLEANUP */ /* * Exit Handler */ static void ExitHandler(ClientData clientData) { Tcl_Interp *interp = (Tcl_Interp *)clientData; int i, flags; NsfRuntimeState *rst = RUNTIME_STATE(interp); /*fprintf(stderr, "ExitHandler\n");*/ /* * Don't use exit handler, if the interpreter is already destroyed. * Call to exit handler comes after freeing namespaces, commands, etc. * e.g. TK calls Tcl_DeleteInterp directly, if Window is killed. */ /* * Ahem ... * * Since we *must* be sure that our destroy methods will run * we must *cheat* (I mean CHEAT) here: we flip the interp * flag, saying, "hey boy, you're not deleted any more". * After our handlers are done, we restore the old state... * All this is needed so we can do an eval in the interp which * is potentially marked for delete when we start working here. * * I know, I know, this is not really elegant. But... I'd need a * standard way of invoking some code at interpreter delete time * but JUST BEFORE the actual deletion process starts. Sadly, * there is no such hook in Tcl as of Tcl8.4.*, that I know of. * * So, for the rest of procedure, assume the interp is alive ! */ flags = Tcl_Interp_flags(interp); Tcl_Interp_flags(interp) &= ~DELETED; CallStackPopAll(interp); if (rst->exitHandlerDestroyRound == NSF_EXITHANDLER_OFF) { NsfFinalizeCmd(interp, 0); } /* Must be before freeing of NsfGlobalObjs */ NsfShadowTclCommands(interp, SHADOW_UNLOAD); MEM_COUNT_FREE("Tcl_InitHashTable", &rst->activeFilterTablePtr); Tcl_DeleteHashTable(&rst->activeFilterTablePtr); /* free global objects */ for (i = 0; i < nr_elements(NsfGlobalStrings); i++) { DECR_REF_COUNT(NsfGlobalObjs[i]); } NsfStringIncrFree(&rst->iss); /* * Free all data in the pointer converter. */ Nsf_PointerExit(interp); #if defined(NSF_PROFILE) NsfProfileFree(interp); #endif FREE(Tcl_Obj**, NsfGlobalObjs); #if defined(TCL_MEM_DEBUG) TclDumpMemoryInfo((ClientData) stderr, 0); Tcl_DumpActiveMemory("./nsfActiveMem"); /* Tcl_Eval(interp, "puts {checkmem to checkmemFile}; checkmem checkmemFile"); */ #endif /* * Free runtime state. */ ckfree((char *) RUNTIME_STATE(interp)); #if USE_ASSOC_DATA Tcl_DeleteAssocData(interp, "NsfRuntimeState"); #else Tcl_Interp_globalNsPtr(interp)->clientData = NULL; #endif #if defined(NSF_MEM_COUNT) && !defined(PRE86) /* * When raising an error, the Tcl_Objs on the error stack and in the * inner context are refCount-incremented. When Tcl exits, it does normally * not perform the according decrementing. We perform here a manual * decrementing and reset these lists. */ { Interp *iPtr = (Interp *) interp; if (iPtr->innerContext) { Tcl_DecrRefCount(iPtr->errorStack); iPtr->errorStack = Tcl_NewListObj(0, NULL); Tcl_IncrRefCount(iPtr->errorStack); Tcl_DecrRefCount(iPtr->innerContext); iPtr->innerContext = Tcl_NewListObj(0, NULL); Tcl_IncrRefCount(iPtr->innerContext); } } #endif Tcl_Interp_flags(interp) = flags; Tcl_Release(interp); MEM_COUNT_RELEASE(); } #if defined(TCL_THREADS) /* * Gets activated at thread-exit */ static void Nsf_ThreadExitProc(ClientData clientData) { /*fprintf(stderr, "+++ Nsf_ThreadExitProc\n");*/ void Nsf_ExitProc(ClientData clientData); Tcl_DeleteExitHandler(Nsf_ExitProc, clientData); ExitHandler(clientData); } #endif /* * Gets activated at application-exit */ void Nsf_ExitProc(ClientData clientData) { /*fprintf(stderr, "+++ Nsf_ExitProc\n");*/ #if defined(TCL_THREADS) Tcl_DeleteThreadExitHandler(Nsf_ThreadExitProc, clientData); #endif ExitHandler(clientData); } /* * Registers thread/application exit handlers. */ static void RegisterExitHandlers(ClientData clientData) { Tcl_Preserve(clientData); #if defined(TCL_THREADS) Tcl_CreateThreadExitHandler(Nsf_ThreadExitProc, clientData); #endif Tcl_CreateExitHandler(Nsf_ExitProc, clientData); } /* * Tcl extension initialization routine */ #if 0 #include #endif int Nsf_Init(Tcl_Interp *interp) { static NsfMutex initMutex = 0; ClientData runtimeState; NsfRuntimeState *rst; int result, i; #ifdef NSF_BYTECODE /*NsfCompEnv *interpstructions = NsfGetCompEnv();*/ #endif #ifdef USE_TCL_STUBS static int stubsInitialized = 0; #endif #if 0 ProfilerStart("profiler"); #endif #ifdef USE_TCL_STUBS /* * Since the stub-tables are initialized globally (not per interp), we want * to initialize these only once. The read operation on "stubsInitialized" * is a potentially dirty read. However, we can't use a mutex lock around * this, since Tcl_MutexLock() requires (at least on some platforms) * initialized stub-tables. The dirty read of stubsInitialized is not so * invasive as the dirty reads caused by overwriting the stub tables. * * NsfMutexLock(&stubFlagMutex); * ... * NsfMutexUnlock(&stubFlagMutex); */ if (stubsInitialized == 0) { if (Tcl_InitStubs(interp, "8.5", 0) == NULL) { return TCL_ERROR; } if (Tcl_TomMath_InitStubs(interp, "8.5") == NULL) { return TCL_ERROR; } stubsInitialized = 1; } #endif #if defined(TCL_MEM_DEBUG) TclDumpMemoryInfo((ClientData) stderr, 0); #endif /* * Runtime State stored in the client data of the Interp's global namespace * in order to avoid global state information. All fields are per default * set to zero. */ runtimeState = ckalloc(sizeof(NsfRuntimeState)); memset(runtimeState, 0, sizeof(NsfRuntimeState)); #if USE_ASSOC_DATA Tcl_SetAssocData(interp, "NsfRuntimeState", NULL, runtimeState); #else Tcl_Interp_globalNsPtr(interp)->clientData = runtimeState; #endif /* * If MEM_COUNT is activated, the tables have to be initialized before the * first call to the MEM_COUNT macros (including e.g. INCR_REF_COUNT), but * it requires that the runtimeState is already associated with the interp. */ MEM_COUNT_INIT(); /* * Init global variables for Tcl_Obj types. */ NsfMutexLock(&initMutex); Nsf_OT_byteCodeType = Tcl_GetObjType("bytecode"); assert(Nsf_OT_byteCodeType); Nsf_OT_tclCmdNameType = Tcl_GetObjType("cmdName"); assert(Nsf_OT_tclCmdNameType); Nsf_OT_listType = Tcl_GetObjType("list"); assert(Nsf_OT_listType); Nsf_OT_intType = Tcl_GetObjType("int"); assert(Nsf_OT_intType); Nsf_OT_doubleType = Tcl_GetObjType("double"); assert(Nsf_OT_doubleType); NsfMutexUnlock(&initMutex); /* * Initialize the pointer converter. */ Nsf_PointerInit(interp); /* fprintf(stderr, "SIZES: obj=%d, tcl_obj=%d, DString=%d, class=%d, namespace=%d, command=%d, HashTable=%d\n", sizeof(NsfObject), sizeof(Tcl_Obj), sizeof(Tcl_DString), sizeof(NsfClass), sizeof(Namespace), sizeof(Command), sizeof(Tcl_HashTable)); */ #if defined(NSF_PROFILE) NsfProfileInit(interp); #endif rst = RUNTIME_STATE(interp); rst->doFilters = 1; rst->doCheckResults = 1; rst->doCheckArguments = NSF_ARGPARSE_CHECK; #if defined(NSF_STACKCHECK) { int someVar; /* * Note that Nsf_Init() is called typically via a package require, which * is therefore not really the bottom of the stack, but just a first * approximization. */ rst->bottomOfStack = &someVar; rst->maxStack = rst->bottomOfStack; } #endif /* * Check, if the namespace exists, otherwise create it. */ rst->NsfNS = Tcl_FindNamespace(interp, "::nsf", NULL, TCL_GLOBAL_ONLY); if (rst->NsfNS == NULL) { rst->NsfNS = Tcl_CreateNamespace(interp, "::nsf", NULL, (Tcl_NamespaceDeleteProc *)NULL); } MEM_COUNT_ALLOC("TclNamespace", rst->NsfNS); /* * Init an empty, faked proc structure in the RUNTIME state. */ rst->fakeProc.iPtr = (Interp *)interp; rst->fakeProc.refCount = 1; rst->fakeProc.cmdPtr = NULL; rst->fakeProc.bodyPtr = NULL; rst->fakeProc.numArgs = 0; rst->fakeProc.numCompiledLocals = 0; rst->fakeProc.firstLocalPtr = NULL; rst->fakeProc.lastLocalPtr = NULL; /* * NsfClasses in separate Namespace / Objects */ rst->NsfClassesNS = Tcl_CreateNamespace(interp, "::nsf::classes", NULL, (Tcl_NamespaceDeleteProc *)NULL); MEM_COUNT_ALLOC("TclNamespace", rst->NsfClassesNS); /* * Cache interpreters proc interpretation functions */ rst->objInterpProc = TclGetObjInterpProc(); rst->exitHandlerDestroyRound = NSF_EXITHANDLER_OFF; RegisterExitHandlers(interp); NsfStringIncrInit(&RUNTIME_STATE(interp)->iss); /* * initialize global Tcl_Obj */ NsfGlobalObjs = NEW_ARRAY(Tcl_Obj*, nr_elements(NsfGlobalStrings)); for (i = 0; i < nr_elements(NsfGlobalStrings); i++) { NsfGlobalObjs[i] = Tcl_NewStringObj(NsfGlobalStrings[i], -1); INCR_REF_COUNT(NsfGlobalObjs[i]); } Tcl_InitHashTable(&rst->activeFilterTablePtr, TCL_STRING_KEYS); MEM_COUNT_ALLOC("Tcl_InitHashTable", &rst->activeFilterTablePtr); /* * Create namespaces for the different command types. */ Tcl_CreateNamespace(interp, "::nsf::cmd", 0, (Tcl_NamespaceDeleteProc *)NULL); for (i=0; i < nr_elements(method_command_namespace_names); i++) { Tcl_CreateNamespace(interp, method_command_namespace_names[i], 0, (Tcl_NamespaceDeleteProc *)NULL); } /* * Create all method commands (will use the namespaces above). */ for (i=0; i < nr_elements(method_definitions)-1; i++) { Tcl_CreateObjCommand(interp, method_definitions[i].methodName, method_definitions[i].proc, 0, 0); } /* * Create Shadowed Tcl cmds: */ result = NsfShadowTclCommands(interp, SHADOW_LOAD); if (result != TCL_OK) { return result; } /* * Create new Tcl cmds: */ #ifdef NSF_BYTECODE instructions[INST_NEXT].cmdPtr = (Command *) #endif Tcl_CreateObjCommand(interp, "::nsf::xotclnext", NsfNextObjCmd, 0, 0); #ifdef NSF_BYTECODE instructions[INST_SELF].cmdPtr = (Command *)Tcl_FindCommand(interp, "::nsf::current", NULL, TCL_GLOBAL_ONLY); #endif /*Tcl_CreateObjCommand(interp, "::nsf::K", NsfKObjCmd, 0, 0);*/ #ifdef NSF_BYTECODE NsfBytecodeInit(); #endif NsfReportVars(interp); Tcl_AddInterpResolvers(interp,"nsf", (Tcl_ResolveCmdProc *)InterpColonCmdResolver, InterpColonVarResolver, (Tcl_ResolveCompiledVarProc *)InterpCompiledColonVarResolver); rst->colonCmd = Tcl_FindCommand(interp, "::nsf::colon", NULL, TCL_GLOBAL_ONLY); /* * SS: Tcl occasionally resolves a proc's cmd structure (e.g., in * [info frame /number/] or TclInfoFrame()) without * verification. However, NSF non-proc frames, in particular * initcmd blocks, point to the fakeProc structure which does not * come with an initialized Command pointer. For now, we default to * an internal command. However, we need to revisit this decision * as non-proc frames (e.g., initcmds) report a "proc" entry * indicating "::nsf::colon" (which is sufficiently misleading and * reveals internals not to be revealed ...). */ rst->fakeProc.cmdPtr = (Command *)RUNTIME_STATE(interp)->colonCmd; { /* * The file "predefined.h" contains some methods and library procs * implemented in Tcl - they could go in a nsf.tcl file, but * they're embedded here with Tcl_Eval to avoid the need to * carry around a separate file at runtime. */ #include "predefined.h" /* fprintf(stderr, "predefined=<<%s>>\n", cmd);*/ if (Tcl_Eval(interp, cmd) != TCL_OK) { static char cmd[] = "puts stderr \"Error in predefined code\n\ $::errorInfo\""; Tcl_EvalEx(interp, cmd, -1, 0); return TCL_ERROR; } } #ifndef AOL_SERVER /* the AOL server uses a different package loading mechanism */ # ifdef COMPILE_NSF_STUBS # if defined(PRE86) Tcl_PkgProvideEx(interp, "nsf", PACKAGE_VERSION, &nsfStubs); # else Tcl_PkgProvideEx(interp, "nsf", PACKAGE_VERSION, &nsfConstStubPtr); # endif # else Tcl_PkgProvide(interp, "nsf", PACKAGE_VERSION); # endif #endif /* * Obtain type for parsed var name. */ if (Nsf_OT_parsedVarNameType == NULL) { Tcl_Obj *varNameObj = Tcl_NewStringObj("::nsf::version",-1); Var *arrayPtr; INCR_REF_COUNT(varNameObj); TclObjLookupVar(interp, varNameObj, NULL, 0, "access", /*createPart1*/ 1, /*createPart2*/ 1, &arrayPtr); Nsf_OT_parsedVarNameType = varNameObj->typePtr; assert(Nsf_OT_parsedVarNameType); DECR_REF_COUNT(varNameObj); } #if !defined(TCL_THREADS) if ((Tcl_GetVar2(interp, "tcl_platform", "threaded", TCL_GLOBAL_ONLY) != NULL)) { /* a non threaded version of nsf is loaded into a threaded environment */ fprintf(stderr, "\n A non threaded version of the Next Scripting Framework " "is loaded into threaded environment.\n" "Please reconfigure nsf with --enable-threads!\n\n\n"); } #endif Tcl_ResetResult(interp); Tcl_SetIntObj(Tcl_GetObjResult(interp), 1); return TCL_OK; } EXTERN int Nsf_SafeInit(Tcl_Interp *interp) { /*** dummy for now **/ return Nsf_Init(interp); } /* * Local Variables: * mode: c * c-basic-offset: 2 * fill-column: 78 * End: */