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- code cleanup

- nsf.c: * ensure that explicit per-object-mixins are kept at the front in "info heritage" order and in "info precedence" when classes are added as POMs and PCMs * extended regression test

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- nsf.c: * added NsfClassListNoDup() to allow just single inserts * added NsfClassListPrint() for debugging * info heritage returns no duplicates * added prototype for NsfNoCurrentObjectError() * report "no current object" when no object is passed to a method. * code cleanup - extended regression test

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- nsf.c: * handle direct dispatches for aliased methods * new generalized error message: NsfNoCurrentObjectError()

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- generic/nsf.c: Re-arranging previous commit a little

- generic/nsf.c: Added a no-current-object guard to NsfProcAliasMethod(); otherwise, executing alias procs directly leads to a non-instructive assertion failure. - Corrected two typos - TODO: suggesting refactoring of no-self-object messages

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- replaced loops with NsfClassListFind()

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-nsf.c: * factor out NsfClassListFind() * let result of "cls info heritage" return per-class mixins as well, otherwise it would be useless, since "cls info superclass -closure" would return the same

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- nsf.c: factor out ClassListAddPerClassMixins()

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- nsf.c: * moved implementation of ::nsf::method::delete to C * produce same error messages when methods are delete via nsf::method::delete and nsf::method::create {} {} * Prohibit deletion of methods during shutdown. Otherwise when destructors delete methods, some other destructors depending on these methods will fail. Cleanup deletes all methods anyway. * Provided alternative (faster) way of dispatching nsf::procs (can be tured off with NSF_INVOKE_SHADOWED_TRADITIONAL) * renamed NsfMethodCmd() into NsfMethodCreateCmd() for consistency * nsf works with OpenACS again (requires new nstrace.tcl, aolserver-openacs.tcl, and 01-debug-procs.tcl).

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- nsf: renamed nsf::isobject to nsf::object::exists - nsf: renamed nsf::qualify to nsf::object::qualify

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- nsf.c: made potentially unknown clientData more safe (error message, when something is passed via clientData to a method expecting an object/class as clientData). - renamed NsfNoDispatchObjectError() to NsfDispatchClientDataError(), extended interface - Makefile.in: fixed name methods.test

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- nsf.c: added nsf::var::unset (provided so far just var::set)

- nsf:c: fix dispatch of setter without current method - extended regression tests

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- improve debug message

- added experimental flag INHERIT_CLASS_METHODS

- reduce verbosity

- Improve locality

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- Fixed dispatch of defaultmethod for ensemble methods - Added compile flag DISPATCH_ALWAYS_DEFINED_METHODS (deactivated). So far, nx just uses dispatch on overloads or filters, but not on defines (possible to call e.g. "destroy" from a script, but internally the direct dispatch is used, as long there is no overload). The compileflag would force to use the slower dispatch always. - Extended regression test

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* nx: added flag ?-type ...? to "info lookup slots" * nsf: made all useful converters external symbols

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- gentclAPI.tcl: * renamed "nsfCmd" to simply "cmd", since the code can generate arbitrary tcl commands * allow type "int" in the .decls files - nsf.c * move several functions from "static" to "external" to make the code generator usable for submodules as well

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- nsf.c: make sure, validCscPtr is always initialized - tested all regression tests with valgrind against tcl-trunk

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- nsf.c: remove unnecessary test when compiled without NRE

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* The newest trunk version of Tcl in fossil has TclStackFree() and TclStackAlloc() removed We had to substitute this functions. Unfortunately, the lifetime of the strack structures has changed, so we had shuffle some interals around.

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* make sure to create the cmds for objects with Tcl_NRCreateCommand() to choose trampoline-path in the trunk version of Tcl

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* fix compilation for tcl-head in fossil * deactivate coro regression test, since it is apparently broken for tcl-head in fossil (stack frame seems to be lost after a yield)

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* fixed bad interaction between filter and parameter alias

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* Hopefully the last big naming change: Instead of writing "C class-object method foo {} {...}" one can write now "C class method foo {} {...}" to define a class method named "foo" for class "C". This naming change became possible by defining XOTcl's "class" (and "superclass") as object parameter only. To change a class of an object o, one has to use "o configure -class NEWCLASS". The term "object-class" looks alien to language beginners, the term "class" is much more straightforward. Changing classes or superclasses is seldomly used by typicall application programs.

For already existing nx scripts, changing "object-class" into

class should be straightforward.

* various documentation updates (migration guide, nx tutorial)

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* added methods ::nsf::methods::object::class and ::nsf::methods::class::superclass in order to make faster and nicer looking objectparameters (compared with forwarders) * nx: changed parameter -class to use ::nsf::methods::object::class * ns: fixed chicken egg problem of method objectparameter needing objectparameter by creating/destroying slot Class::slot::dummy; otherwise default values for slots would not be available * reduced verbosity of parameter forwarder

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* provided a fast path implementation for "defaultmethod" * provided default system methods for "init", "defaultmethod" and "unknown" * provided handles for system methods "alloc", "dealloc", "recreate", and "defaultmethod" * strip in dispatch invocations of "unknown" potental leading colons * removed c-level implementation of init again, since scripted one can be used now as well in registration of createobjectsystem * reduced verbosity * added defintions such that these methods can be loaded via ::nsf::method::require ::nx::Object unknown

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