slottest.xotcl

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nx::test: - change test cases to newer interface - don't use "namespace import nx::*" in test cases when not required

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- when creation with an required configure parameter failed, delete the half-baked object to avoid confusing states.

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- removed some TODOs from tests/parameters.test

- parameter dispositions:

We differentiate now between "initcmd" and "cmd": an "initcmd" is only

evaluated once, but one can provide configure values for this parameter

later. a "cmd" is executed on every evaluation, it is only possible

to pass cmds to it. The trailing argument of the configure parameters

(used e.g. for scripted object/class definitions) is now of type "cmd".

Implementation not yet complete (object cases are not correct).

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Object-method Reform: - changed interface to object specific commands by requiring an ensemble named "object". The rational behind is essentially to use always the same info command to retrieve object specific methods, no matter whether these are defined on a plain object or an a class object (does not break the "contract" what e.g. "info method" returns).

Now we define methods via:

/cls/ method foo {args} {...body...}

/cls/ object method foo {args} {...body...}

/obj/ object method foo {args} {...body...}

Similarly, aliases, forwards and mixins are defined, e.g.

/cls/ mixin add ...

/cls/ object mixin add ...

/obj/ object mixin add ...

/obj/ require object method ...

The same change propagated as well to the "info" method.

Now we have:

/cls/ info methods ...

/cls/ info object methods ...

/obj/ info object methods ...

Similar, the object parametererization uses

/cls/ create obj -object-mixin M

/cls/ create obj -object-filter f

/metacls/ create cls -mixin M1 -object-mixin M2

/metacls/ create cls -filter f1 -object-filter f2

- as a consequence,

a) "/cls/ class method ...",

"/cls/ class alias ...",

"/cls/ class forward ...",

"/cls/ class filter ...",

"/cls/ class mixin ...",

"/cls/ class info ..."

"/obj/ class method require method ..."

"/obj/ class method require public method ..."

"/obj/ class method require protected method ..."

"/obj/ class method require private method ..."

were dropped

b) "/obj/ method ....",

"/obj/ alias ....",

"/obj/ forward ...."

"/obj/ filter ...."

"/obj/ mixin ...."

"/obj/ info method*"

"/cls/ create obj -mixin M"

"/cls/ create obj -filter f"

"/obj/ method require method ..."

"/obj/ method require public method ..."

"/obj/ method require protected method ..."

"/obj/ method require private method ..."

were dropped

- added package nx::class to allow optionally the "class" notation

"/cls/ class method ..." (and friends, see (a)), and

"/cls/ class info ...

- added package nx::plain-object-method to allow optionally plain method

b) "/obj/ method ...." (and friends, see (b))

- add support to slots to use ensemble methods as setters

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Property Reform Part 2: better handling of per-object properties nsf.c: - changed "/class/ __objectconfigure" to "/obj/ __objectconfigure" to be able to handle per-object properties on classes properly. - renamed "info method parametersyntax" -> "info method syntax" - renamed "/obj|cls/ info method parametersyntax" into "/obj|cls/ info method syntax" - replaced "::nsf::methods::class::info::objectparameter" by "::nsf::methods::object::info::objectparameter" - new command "::nsf::parameter::specs ?-configure? ?-noposargs? slotobjs": convert provided slotobjs into a list of parameter specs - new command "::nsf::parameter::get list|name|syntax parameterspec": convert parameter spec into syntax form, or retrieve pieces of information from it (can be extended in the future) - added more or less generic list handling functions TclObjListFreeList(), TclObjListNewElement() and TclObjListAdd() used by "::nsf::parameter::specs" - replaced "::nsf::method::property /obj/ -per-object /name/ slotcontainer ?value?" by "::nsf::object::property /obj/ slotcontainer ?value?" - added "::nsf::object::property /obj/ hasperobjectslots ?value?"

nx.tcl:

- new info methods

* "/obj/ info lookup parameter definitions"

* "/obj/ info lookup parameter names"

* "/obj/ info lookup parameter list"

* "/obj/ info lookup parameter syntax"

- changed "/cls/ info parameter definition ?name?"

into "/cls/ info parameter definitions ?name?"

since ir returns a list. Still, "list" or "syntax" won't

be plural

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- Addressed a number of issues in the NX slot infrastructure (which revealed themselves when running Mark's BusinessActivities implementation in XOTcl2 mode): - generic/nsf.c: Initcmd blocks (as set for registering per-class slot traces) were subjected to argument checks causing unexpected behavior (e.g., attempts of unboxing initcmds as Tcl lists or of checking initcmds against value types). This was fixed by exempting NSF_ARG_INITCMD params from argument checking in ArgumentCheck() explicitly. - library/nx/nx.tcl: For per-class parameters, the use of valuechangedcmd effectively overruled the default value specified (simply because the generated initcmd holding the trace statements took the place of the default value). While for defaultcmd and for valuecmd the parallel use of default is forbidden, the valuechangedcmd semantics allow for specifying a default, in principle. This was fixed by providing a default-setting statement in the initcmd. - tests/parameters.test: Added tests to cover the above (and beyond). - library/xotcl/library/xotcl2.tcl: Extended the backwards compatibility of the hybrid XOTcl2/NX slots infrastructure to the XOTcl 1 interface: This includes support for inline -proc statements and instvar. This compat level corresponds to the slot interface as documented (by examples) in the XOTcl language ref and the manual. - library/xotcl/tests/slottest.xotcl: Added tests for the above compat enhancements.

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- library/xotcl/library/xotcl2.tcl: Provided a virtual slot "multivalued" to establish backward compatibility with XOTcl1; also, allow old-style class creation based on unknown for ::xotcl::Attribute - library/xotcl/tests/slottest.xotcl: Added some tests on backward compatibility for XOTcl slots

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- nsf.c: start all error messages with a lower case word for consistency and to follow closer to Tcl's conventions

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- make sure to use "XOTcl 2.0" instead of just XOTcl in "package req" to avoid confusions due to beta state - remove more obsolete and untested files

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tests: - added "package prefer latest" to avoid confusions of alpha and beta releases with install versions

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- nsf.c - added experimental parameter option noleadingdash - additionalal regression test file method-parameter.test - provide selective error messages for unknown nonpos args

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- nx.tcl * renamed "attribute" to "property" * renamed "defaultAttributeCallProtection" to "defaultPropertyCallProtection" * renamed "nx::Attribute" to ""nx::VariableSlot" * renamed "BootStrapAttributeSlot" to "BootStrapVariableSlot" * renamed "createBootstrapAttributeSlots" to "createBootstrapVariableSlots" * removed method attributes * implemented old attributes definition in xotcl2 as method "parameter"

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- nsf.c: * added refcounting to parameter definitions (needed, when aliased object parameter redefined the actual objectparameters) * removed hardcoded call to remaining args * switched implentation of xotcl2 to use object parameter with parameter option "args" * removed residualargs from object system definition * extended regression test

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- use filterreg in regressiontest as well

- renamed converter from "mixinspec" to "mixinreg"

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- nsf.c: * added a new converter for converting mixins with guards (named mixinspec) * used mixinspec in nx.tcl and xotcl2.tcl * extended nx regression test.

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- nsf.c: generalized disposition handling (forward, alias, initcmd) for object parameter * disposition is now an option for object parameters rather than than an own type. Therefore, one can check the arguments passed to the disposition cases * changed specification of name of method from arg= to method= * this way "type" info in "info parameter syntax" is handled automatically

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- xotcl2:tcl * made "info heritage" in xotcl2 compatible with xotcl1 * fixed "info slots" in xotcl2 * extended regression test

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- nsf.c: Since the method "objectparameter" is just based on the class (and object parameters are invalidates as well over the class), we moved the method from obj to class to avoid potential confusions

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- test.tcl: * don't export Test per-default * define Test as nx::Test * make Test parameter count 1 the default, change to higher numbers where needed

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* reactivated "configure", since we plan to use it more prominently * added a configure flag for "class" * removed method "class" (should be used via "/obj/ configure -class ...")

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- changed names of var handling commands in nsf: ::nsf::existsvar => ::nsf::var::exists ::nsf::importvar => ::nsf::var::import ::nsf::setvar => ::nsf::var::set

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- changed named of method handling commands in nsf: ::nsf::methodproperty => ::nsf::method::property ::nsf::method => ::nsf::method::create ::nsf::methoddelete => ::nsf::method::delete ::nsf::alias => ::nsf::method::alias ::nsf::forward => ::nsf::method::forward ::nsf::setter => ::nsf::method::setter (updated regression test, docs, ...)

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- nsf::relation: fixed error message when receiving and invalid class for relation type "class"

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- update slot uml diagram - fixed incorrect (unwanted) call to unknown that caused creation of objects names __unknown when classes could not be resolved

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- nx.tcl: * full rewrite of slot machinerie, much simpler structure * relation handling via parameter aliases instread of pseudo converter * mixinclass SlotOptimizer removed * new class BootStrapAttributeSlot

- ConvertToRelation() and handling of parametertype "relation"

- Make CompiledColonVarFetch() more robust in case of

half initialized objects (create vartable on the fly if needed)

- allow empty parameter options in parameter parser

- removed nsf::parametersfromslots (became simple, part of objectparameter now)

- removed hardcoded objectparameter (attributes, volatile and noinit)

- updated regression test

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- create slots via MetaSlot

- fixed bug with required last object parameter without provided value - extended regression test

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- introduced a few forms of multiplicty * 0..1 allow empty value * 0..* list, can be empty (equivalent to 0..n) * 1..* list, cannot be empty (equivalent to 1..n) - deprecate multivalued in parameter specs in favor of multiplicty - deprecate allowempty in parameter specs in favor of multiplicty - adjust regression test

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- quote name of referenced parameter in error message to ease reading - new parameter checker "parameter", performing an approximate checking for valid parameter specs - set NSF_ARG_CHECK_NONPOS only when there are multiple arguments - remove space checking for NSF_ARG_CHECK_NONPOS in favor of parameter checker

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