parameters.test

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Make sure that the original error message is preserved when calling destroy after a failed CMD or INITCMD

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- improved handling of required configure parameters when classes are changed dynamically. When configure parameter are defined required, checking for the absence of required parameter was only performed at creation time. When objects were re-classed or their classes extended with required parameters, later calls to configure did not trigger exceptions. Now we check for the existence of the instance variable which addresses most of these points, but in future we might wish a more general solution (see comment for futures releases)

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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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- changed multiplicity of mixin, object-mixin, filter, object-filter from 1..n to 0..n; rationale: when one has a list of eg. mixins, which should be passed, one has to test for the length before passing it, otherwise the empty list would generate an error. Allowing 0..n makes the usage simpler and the program shorter.

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nx.tcl: - renamed variable option "-config" to "-configurable" to make its intention clearer

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- renamed initblock parameter from __initcmd to __initblock - renamed nsf::configure parameter from "keepinitcmds" to "keepcmds" - saving "keepcmds" in an associative array named "__cmd(/parameternName)" to allow saving of multiple parmeters with less nameclash danger (when application stays away from variables stating with double underscore)

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nx.tcl: - removed "info is .." since it might raise more questions than it solves

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- added implementation for slots with traces+types for classes - exception for incorrect defaults are thrown during slot creation - extended nsf::is, added parameter * ?-configure? -- accept configure paramter options * ?-name /name/? -- provide a parameter name for error message - simplified nx.tcl by using new nsf::is - extended regression test

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- fixed cases, where valuechangedcmd (and the other traces) did not work with "configure" method. When slot traces are used, it cleans other traces for the same operations. - extended regression test

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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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- hopefully the last changes for ?object? method|variable|property: defined * "/obj/ delete object method" * "/obj/ delete object property" * "/obj/ delete object variable"

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- dropped "/obj/ info slot definition /obj/" in favor of "/slotobj/ definition"

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- nx.tcl: handle "incremental" in slot reconfigure - nx.tcl: change defaultAccessor to "none"

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Method and configure parameter reform, Part 2: In order to streamline the interface further, we tried to follow the idea to use "... info /plural word/" to obtain a set of handles, and then a separate call to obtain the details. Therefore, we replaced

/cls/ info slot objects

/cls/ info slot definitions

/cls/ info slot names

/obj/ info object slot objects

/obj/ info object slot definitions

/obj/ info object slot names

/obj/ info lookup slots

by

/cls/ info slots ?-type /type/? ?-closure? ?-source all|application|baseclasses? ?/pattern/?

/obj/ info object slots ?-type /type/? ?/pattern/?

/obj/ info slot definition /obj/

/obj/ info lookup slots ?-type /type/? ?-source all|application|baseclasses? ?/pattern/?

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- Method and configure parameter reform

/cls/ info configure parameters ?pattern? -> list of params

/cls/ info configure syntax -> syntax output

/obj/ info method parameters /methodName/ ?/pattern/? -> list of params

/obj/ info method syntax -> syntax output

/obj/ info lookup configure parameter ?/pattern/? -> list of params

/obj/ info lookup configure syntax -> syntax output

/cls/ info parameter list|name|syntax /param/ -> value

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- syntax formatter: use /value/ for denoting placeholder in "... info method syntax ..."

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- moved "/obj/ info slot definition|..." to "/obj/ info object slot definition|..." for consistency - provided "parametersyntax()" for "object mixin" and "object filter"

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- added "/obj/ object variable" and "/obj/ object property"

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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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Extending test case to cover slotassign issue

Adding a test and a temporary fix for the ::nsf::is issue in setCheckedInstVar

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nx.tcl: - property has now a boolean non-positional argument "-config" /obj|cls/ property ?-accessor value? ?-config boolean? ?-incremental? ?-class value? spec ?initblock? in symmetry with "-accessor" (parameter option "noconfig" is still needed to flag nsf for variables that should be initialized, which are not configurable - "/obj|cls/ info slot definitions" returns a full command (containing flags and property|variable) - extended regression test

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- improve comment

- changed name "/obj|cls/ slot info definition" to "/obj|cls/ slot info definition" since result is a set - dropped parameter method "properties" - dropped "/obj/ info properties" (since "properties" or "variables" are returned")

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- added functiality for "cget" to call parameter-methods (e.g. "... cget -class"). The method cget calls either "/slot/ get ..." (when slot=... is provided in the parameter spec) or it assumes that the method without argument returns the value - added "::nsf::object::property /obj/ volatile" to query whether a object is volatile or not - "/obj/ cget -volatile" returns now the volatial state of the object - factored out ParameterMethodDispatch() from OConfigureMethod() - extended regression test

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- invalidation of per-object parameter cache * on mixin changes and * on deletion/adding of per-object slots - decactivate PER_OBJECT_PARAMETER_CACHING per default (flipping this parameter makes regression test more than 20 faster). - extended regression test

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- NsfObjInfoObjectparameterMethod(): return not only the first matching parameter, but the list of all matching ones. The last optional argument was renamed from "name" to "pattern" accordingly

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- rename invalidateobjectparameter -> parameter:invalidate::classcache - rename invalidateobjobjectparameter -> parameter:invalidate::objectcache - bring cmds into alphabetical order

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nsf.c: - fix potential bad interaction between per-object mixins and per-class caching of object-parameters

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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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