diff options
Diffstat (limited to 'generic/tclOODefineCmds.c')
| -rw-r--r-- | generic/tclOODefineCmds.c | 882 |
1 files changed, 562 insertions, 320 deletions
diff --git a/generic/tclOODefineCmds.c b/generic/tclOODefineCmds.c index 5b0dfc3..b4ff283 100644 --- a/generic/tclOODefineCmds.c +++ b/generic/tclOODefineCmds.c @@ -17,6 +17,12 @@ #include "tclOOInt.h" /* + * The actual value used to mark private declaration frames. + */ + +#define PRIVATE_FRAME (FRAME_IS_OO_DEFINE | FRAME_IS_PRIVATE_DEFINE) + +/* * The maximum length of fully-qualified object name to use in an errorinfo * message. Longer than this will be curtailed. */ @@ -31,14 +37,17 @@ struct DeclaredSlot { const char *name; const Tcl_MethodType getterType; const Tcl_MethodType setterType; + const Tcl_MethodType resolverType; }; -#define SLOT(name,getter,setter) \ +#define SLOT(name,getter,setter,resolver) \ {"::oo::" name, \ {TCL_OO_METHOD_VERSION_CURRENT, "core method: " name " Getter", \ getter, NULL, NULL}, \ {TCL_OO_METHOD_VERSION_CURRENT, "core method: " name " Setter", \ - setter, NULL, NULL}} + setter, NULL, NULL}, \ + {TCL_OO_METHOD_VERSION_CURRENT, "core method: " name " Resolver", \ + resolver, NULL, NULL}} /* * Forward declarations. @@ -47,8 +56,11 @@ struct DeclaredSlot { static inline void BumpGlobalEpoch(Tcl_Interp *interp, Class *classPtr); static Tcl_Command FindCommand(Tcl_Interp *interp, Tcl_Obj *stringObj, Tcl_Namespace *const namespacePtr); -static void GenerateErrorInfo(Tcl_Interp *interp, Object *oPtr, +static inline void GenerateErrorInfo(Tcl_Interp *interp, Object *oPtr, Tcl_Obj *savedNameObj, const char *typeOfSubject); +static inline int MagicDefinitionInvoke(Tcl_Interp *interp, + Tcl_Namespace *nsPtr, int cmdIndex, + int objc, Tcl_Obj *const *objv); static inline Class * GetClassInOuterContext(Tcl_Interp *interp, Tcl_Obj *className, const char *errMsg); static inline int InitDefineContext(Tcl_Interp *interp, @@ -100,26 +112,59 @@ static int ObjVarsGet(ClientData clientData, static int ObjVarsSet(ClientData clientData, Tcl_Interp *interp, Tcl_ObjectContext context, int objc, Tcl_Obj *const *objv); +static int ResolveClass(ClientData clientData, + Tcl_Interp *interp, Tcl_ObjectContext context, + int objc, Tcl_Obj *const *objv); /* * Now define the slots used in declarations. */ static const struct DeclaredSlot slots[] = { - SLOT("define::filter", ClassFilterGet, ClassFilterSet), - SLOT("define::mixin", ClassMixinGet, ClassMixinSet), - SLOT("define::superclass", ClassSuperGet, ClassSuperSet), - SLOT("define::variable", ClassVarsGet, ClassVarsSet), - SLOT("objdefine::filter", ObjFilterGet, ObjFilterSet), - SLOT("objdefine::mixin", ObjMixinGet, ObjMixinSet), - SLOT("objdefine::variable", ObjVarsGet, ObjVarsSet), - {NULL, {0, 0, 0, 0, 0}, {0, 0, 0, 0, 0}} + SLOT("define::filter", ClassFilterGet, ClassFilterSet, NULL), + SLOT("define::mixin", ClassMixinGet, ClassMixinSet, ResolveClass), + SLOT("define::superclass", ClassSuperGet, ClassSuperSet, ResolveClass), + SLOT("define::variable", ClassVarsGet, ClassVarsSet, NULL), + SLOT("objdefine::filter", ObjFilterGet, ObjFilterSet, NULL), + SLOT("objdefine::mixin", ObjMixinGet, ObjMixinSet, ResolveClass), + SLOT("objdefine::variable", ObjVarsGet, ObjVarsSet, NULL), + {NULL, {0, 0, 0, 0, 0}, {0, 0, 0, 0, 0}, {0, 0, 0, 0, 0}} }; + +/* + * How to build the in-namespace name of a private variable. This is a pattern + * used with Tcl_ObjPrintf(). + */ + +#define PRIVATE_VARIABLE_PATTERN "%d : %s" + +/* + * ---------------------------------------------------------------------- + * + * IsPrivateDefine -- + * + * Extracts whether the current context is handling private definitions. + * + * ---------------------------------------------------------------------- + */ + +static inline int +IsPrivateDefine( + Tcl_Interp *interp) +{ + Interp *iPtr = (Interp *) interp; + + if (!iPtr->varFramePtr) { + return 0; + } + return iPtr->varFramePtr->isProcCallFrame == PRIVATE_FRAME; +} /* * ---------------------------------------------------------------------- * * BumpGlobalEpoch -- + * * Utility that ensures that call chains that are invalid will get thrown * away at an appropriate time. Note that exactly which epoch gets * advanced will depend on exactly what the class is tangled up in; in @@ -164,6 +209,7 @@ BumpGlobalEpoch( * ---------------------------------------------------------------------- * * RecomputeClassCacheFlag -- + * * Determine whether the object is prototypical of its class, and hence * able to use the class's method chain cache. * @@ -186,6 +232,7 @@ RecomputeClassCacheFlag( * ---------------------------------------------------------------------- * * TclOOObjectSetFilters -- + * * Install a list of filter method names into an object. * * ---------------------------------------------------------------------- @@ -244,6 +291,7 @@ TclOOObjectSetFilters( * ---------------------------------------------------------------------- * * TclOOClassSetFilters -- + * * Install a list of filter method names into a class. * * ---------------------------------------------------------------------- @@ -306,6 +354,7 @@ TclOOClassSetFilters( * ---------------------------------------------------------------------- * * TclOOObjectSetMixins -- + * * Install a list of mixin classes into an object. * * ---------------------------------------------------------------------- @@ -323,9 +372,8 @@ TclOOObjectSetMixins( if (numMixins == 0) { if (oPtr->mixins.num != 0) { FOREACH(mixinPtr, oPtr->mixins) { - if (mixinPtr) { - TclOORemoveFromInstances(oPtr, mixinPtr); - } + TclOORemoveFromInstances(oPtr, mixinPtr); + TclOODecrRefCount(mixinPtr->thisPtr); } ckfree(oPtr->mixins.list); oPtr->mixins.num = 0; @@ -337,6 +385,7 @@ TclOOObjectSetMixins( if (mixinPtr && mixinPtr != oPtr->selfCls) { TclOORemoveFromInstances(oPtr, mixinPtr); } + TclOODecrRefCount(mixinPtr->thisPtr); } oPtr->mixins.list = ckrealloc(oPtr->mixins.list, sizeof(Class *) * numMixins); @@ -349,6 +398,8 @@ TclOOObjectSetMixins( FOREACH(mixinPtr, oPtr->mixins) { if (mixinPtr != oPtr->selfCls) { TclOOAddToInstances(oPtr, mixinPtr); + /* For the new copy created by memcpy */ + AddRef(mixinPtr->thisPtr); } } } @@ -359,6 +410,7 @@ TclOOObjectSetMixins( * ---------------------------------------------------------------------- * * TclOOClassSetMixins -- + * * Install a list of mixin classes into a class. * * ---------------------------------------------------------------------- @@ -378,6 +430,7 @@ TclOOClassSetMixins( if (classPtr->mixins.num != 0) { FOREACH(mixinPtr, classPtr->mixins) { TclOORemoveFromMixinSubs(classPtr, mixinPtr); + TclOODecrRefCount(mixinPtr->thisPtr); } ckfree(classPtr->mixins.list); classPtr->mixins.num = 0; @@ -386,6 +439,7 @@ TclOOClassSetMixins( if (classPtr->mixins.num != 0) { FOREACH(mixinPtr, classPtr->mixins) { TclOORemoveFromMixinSubs(classPtr, mixinPtr); + TclOODecrRefCount(mixinPtr->thisPtr); } classPtr->mixins.list = ckrealloc(classPtr->mixins.list, sizeof(Class *) * numMixins); @@ -396,6 +450,8 @@ TclOOClassSetMixins( memcpy(classPtr->mixins.list, mixins, sizeof(Class *) * numMixins); FOREACH(mixinPtr, classPtr->mixins) { TclOOAddToMixinSubs(classPtr, mixinPtr); + /* For the new copy created by memcpy */ + AddRef(mixinPtr->thisPtr); } } BumpGlobalEpoch(interp, classPtr); @@ -404,7 +460,125 @@ TclOOClassSetMixins( /* * ---------------------------------------------------------------------- * + * InstallStandardVariableMapping, InstallPrivateVariableMapping -- + * + * Helpers for installing standard and private variable maps. + * + * ---------------------------------------------------------------------- + */ +static inline void +InstallStandardVariableMapping( + VariableNameList *vnlPtr, + int varc, + Tcl_Obj *const *varv) +{ + Tcl_Obj *variableObj; + int i, n, created; + Tcl_HashTable uniqueTable; + + for (i=0 ; i<varc ; i++) { + Tcl_IncrRefCount(varv[i]); + } + FOREACH(variableObj, *vnlPtr) { + Tcl_DecrRefCount(variableObj); + } + if (i != varc) { + if (varc == 0) { + ckfree(vnlPtr->list); + } else if (i) { + vnlPtr->list = ckrealloc(vnlPtr->list, sizeof(Tcl_Obj *) * varc); + } else { + vnlPtr->list = ckalloc(sizeof(Tcl_Obj *) * varc); + } + } + vnlPtr->num = 0; + if (varc > 0) { + Tcl_InitObjHashTable(&uniqueTable); + for (i=n=0 ; i<varc ; i++) { + Tcl_CreateHashEntry(&uniqueTable, varv[i], &created); + if (created) { + vnlPtr->list[n++] = varv[i]; + } else { + Tcl_DecrRefCount(varv[i]); + } + } + vnlPtr->num = n; + + /* + * Shouldn't be necessary, but maintain num/list invariant. + */ + + if (n != varc) { + vnlPtr->list = ckrealloc(vnlPtr->list, sizeof(Tcl_Obj *) * n); + } + Tcl_DeleteHashTable(&uniqueTable); + } +} + +static inline void +InstallPrivateVariableMapping( + PrivateVariableList *pvlPtr, + int varc, + Tcl_Obj *const *varv, + int creationEpoch) +{ + PrivateVariableMapping *privatePtr; + int i, n, created; + Tcl_HashTable uniqueTable; + + for (i=0 ; i<varc ; i++) { + Tcl_IncrRefCount(varv[i]); + } + FOREACH_STRUCT(privatePtr, *pvlPtr) { + Tcl_DecrRefCount(privatePtr->variableObj); + Tcl_DecrRefCount(privatePtr->fullNameObj); + } + if (i != varc) { + if (varc == 0) { + ckfree(pvlPtr->list); + } else if (i) { + pvlPtr->list = ckrealloc(pvlPtr->list, + sizeof(PrivateVariableMapping) * varc); + } else { + pvlPtr->list = ckalloc(sizeof(PrivateVariableMapping) * varc); + } + } + + pvlPtr->num = 0; + if (varc > 0) { + Tcl_InitObjHashTable(&uniqueTable); + for (i=n=0 ; i<varc ; i++) { + Tcl_CreateHashEntry(&uniqueTable, varv[i], &created); + if (created) { + privatePtr = &(pvlPtr->list[n++]); + privatePtr->variableObj = varv[i]; + privatePtr->fullNameObj = Tcl_ObjPrintf( + PRIVATE_VARIABLE_PATTERN, + creationEpoch, Tcl_GetString(varv[i])); + Tcl_IncrRefCount(privatePtr->fullNameObj); + } else { + Tcl_DecrRefCount(varv[i]); + } + } + pvlPtr->num = n; + + /* + * Shouldn't be necessary, but maintain num/list invariant. + */ + + if (n != varc) { + pvlPtr->list = ckrealloc(pvlPtr->list, + sizeof(PrivateVariableMapping) * n); + } + Tcl_DeleteHashTable(&uniqueTable); + } +} + +/* + * ---------------------------------------------------------------------- + * * RenameDeleteMethod -- + * * Core of the code to rename and delete methods. * * ---------------------------------------------------------------------- @@ -494,6 +668,7 @@ RenameDeleteMethod( * ---------------------------------------------------------------------- * * TclOOUnknownDefinition -- + * * Handles what happens when an unknown command is encountered during the * processing of a definition script. Works by finding a command in the * operating definition namespace that the requested command is a unique @@ -572,6 +747,7 @@ TclOOUnknownDefinition( * ---------------------------------------------------------------------- * * FindCommand -- + * * Specialized version of Tcl_FindCommand that handles command prefixes * and disallows namespace magic. * @@ -632,6 +808,7 @@ FindCommand( * ---------------------------------------------------------------------- * * InitDefineContext -- + * * Does the magic incantations necessary to push the special stack frame * used when processing object definitions. It is up to the caller to * dispose of the frame (with TclPopStackFrame) when finished. @@ -657,7 +834,9 @@ InitDefineContext( return TCL_ERROR; } - /* framePtrPtr is needed to satisfy GCC 3.3's strict aliasing rules */ + /* + * framePtrPtr is needed to satisfy GCC 3.3's strict aliasing rules. + */ (void) TclPushStackFrame(interp, (Tcl_CallFrame **) framePtrPtr, namespacePtr, FRAME_IS_OO_DEFINE); @@ -672,6 +851,7 @@ InitDefineContext( * ---------------------------------------------------------------------- * * TclOOGetDefineCmdContext -- + * * Extracts the magic token from the current stack frame, or returns NULL * (and leaves an error message) otherwise. * @@ -686,7 +866,8 @@ TclOOGetDefineCmdContext( Tcl_Object object; if ((iPtr->varFramePtr == NULL) - || (iPtr->varFramePtr->isProcCallFrame != FRAME_IS_OO_DEFINE)) { + || (iPtr->varFramePtr->isProcCallFrame != FRAME_IS_OO_DEFINE + && iPtr->varFramePtr->isProcCallFrame != PRIVATE_FRAME)) { Tcl_SetObjResult(interp, Tcl_NewStringObj( "this command may only be called from within the context of" " an ::oo::define or ::oo::objdefine command", -1)); @@ -708,6 +889,7 @@ TclOOGetDefineCmdContext( * ---------------------------------------------------------------------- * * GetClassInOuterContext -- + * * Wrapper round Tcl_GetObjectFromObj to perform the lookup in the * context that called oo::define (or equivalent). Note that this may * have to go up multiple levels to get the level that we started doing @@ -726,7 +908,8 @@ GetClassInOuterContext( Object *oPtr; CallFrame *savedFramePtr = iPtr->varFramePtr; - while (iPtr->varFramePtr->isProcCallFrame == FRAME_IS_OO_DEFINE) { + while (iPtr->varFramePtr->isProcCallFrame == FRAME_IS_OO_DEFINE + || iPtr->varFramePtr->isProcCallFrame == PRIVATE_FRAME) { if (iPtr->varFramePtr->callerVarPtr == NULL) { Tcl_Panic("getting outer context when already in global context"); } @@ -750,12 +933,13 @@ GetClassInOuterContext( * ---------------------------------------------------------------------- * * GenerateErrorInfo -- + * * Factored out code to generate part of the error trace messages. * * ---------------------------------------------------------------------- */ -static void +static inline void GenerateErrorInfo( Tcl_Interp *interp, /* Where to store the error info trace. */ Object *oPtr, /* What object (or class) was being configured @@ -787,7 +971,72 @@ GenerateErrorInfo( /* * ---------------------------------------------------------------------- * + * MagicDefinitionInvoke -- + * + * Part of the implementation of the "oo::define" and "oo::objdefine" + * commands that is used to implement the more-than-one-argument case, + * applying ensemble-like tricks with dispatch so that error messages are + * clearer. Doesn't handle the management of the stack frame. + * + * ---------------------------------------------------------------------- + */ + +static inline int +MagicDefinitionInvoke( + Tcl_Interp *interp, + Tcl_Namespace *nsPtr, + int cmdIndex, + int objc, + Tcl_Obj *const *objv) +{ + Tcl_Obj *objPtr, *obj2Ptr, **objs; + Tcl_Command cmd; + int isRoot, dummy, result, offset = cmdIndex + 1; + + /* + * More than one argument: fire them through the ensemble processing + * engine so that everything appears to be good and proper in error + * messages. Note that we cannot just concatenate and send through + * Tcl_EvalObjEx, as that doesn't do ensemble processing, and we cannot go + * through Tcl_EvalObjv without the extra work to pre-find the command, as + * that finds command names in the wrong namespace at the moment. Ugly! + */ + + isRoot = TclInitRewriteEnsemble(interp, offset, 1, objv); + + /* + * Build the list of arguments using a Tcl_Obj as a workspace. See + * comments above for why these contortions are necessary. + */ + + objPtr = Tcl_NewObj(); + obj2Ptr = Tcl_NewObj(); + cmd = FindCommand(interp, objv[cmdIndex], nsPtr); + if (cmd == NULL) { + /* punt this case! */ + Tcl_AppendObjToObj(obj2Ptr, objv[cmdIndex]); + } else { + Tcl_GetCommandFullName(interp, cmd, obj2Ptr); + } + Tcl_ListObjAppendElement(NULL, objPtr, obj2Ptr); + /* TODO: overflow? */ + Tcl_ListObjReplace(NULL, objPtr, 1, 0, objc-offset, objv+offset); + Tcl_ListObjGetElements(NULL, objPtr, &dummy, &objs); + + result = Tcl_EvalObjv(interp, objc-cmdIndex, objs, TCL_EVAL_INVOKE); + if (isRoot) { + TclResetRewriteEnsemble(interp, 1); + } + Tcl_DecrRefCount(objPtr); + + return result; +} + +/* + * ---------------------------------------------------------------------- + * * TclOODefineObjCmd -- + * * Implementation of the "oo::define" command. Works by effectively doing * the same as 'namespace eval', but with extra magic applied so that the * object to be modified is known to the commands in the target @@ -805,8 +1054,8 @@ TclOODefineObjCmd( Tcl_Obj *const *objv) { Foundation *fPtr = TclOOGetFoundation(interp); - int result; Object *oPtr; + int result; if (objc < 3) { Tcl_WrongNumArgs(interp, 1, objv, "className arg ?arg ...?"); @@ -846,48 +1095,9 @@ TclOODefineObjCmd( } TclDecrRefCount(objNameObj); } else { - Tcl_Obj *objPtr, *obj2Ptr, **objs; - Tcl_Command cmd; - int isRoot, dummy; - - /* - * More than one argument: fire them through the ensemble processing - * engine so that everything appears to be good and proper in error - * messages. Note that we cannot just concatenate and send through - * Tcl_EvalObjEx, as that doesn't do ensemble processing, and we - * cannot go through Tcl_EvalObjv without the extra work to pre-find - * the command, as that finds command names in the wrong namespace at - * the moment. Ugly! - */ - - isRoot = TclInitRewriteEnsemble(interp, 3, 1, objv); - - /* - * Build the list of arguments using a Tcl_Obj as a workspace. See - * comments above for why these contortions are necessary. - */ - - objPtr = Tcl_NewObj(); - obj2Ptr = Tcl_NewObj(); - cmd = FindCommand(interp, objv[2], fPtr->defineNs); - if (cmd == NULL) { - /* punt this case! */ - Tcl_AppendObjToObj(obj2Ptr, objv[2]); - } else { - Tcl_GetCommandFullName(interp, cmd, obj2Ptr); - } - Tcl_ListObjAppendElement(NULL, objPtr, obj2Ptr); - /* TODO: overflow? */ - Tcl_ListObjReplace(NULL, objPtr, 1, 0, objc-3, objv+3); - Tcl_ListObjGetElements(NULL, objPtr, &dummy, &objs); - - result = Tcl_EvalObjv(interp, objc-2, objs, TCL_EVAL_INVOKE); - if (isRoot) { - TclResetRewriteEnsemble(interp, 1); - } - Tcl_DecrRefCount(objPtr); + result = MagicDefinitionInvoke(interp, fPtr->defineNs, 2, objc, objv); } - DelRef(oPtr); + TclOODecrRefCount(oPtr); /* * Restore the previous "current" namespace. @@ -901,6 +1111,7 @@ TclOODefineObjCmd( * ---------------------------------------------------------------------- * * TclOOObjDefObjCmd -- + * * Implementation of the "oo::objdefine" command. Works by effectively * doing the same as 'namespace eval', but with extra magic applied so * that the object to be modified is known to the commands in the target @@ -918,8 +1129,8 @@ TclOOObjDefObjCmd( Tcl_Obj *const *objv) { Foundation *fPtr = TclOOGetFoundation(interp); - int isRoot, result; Object *oPtr; + int result; if (objc < 3) { Tcl_WrongNumArgs(interp, 1, objv, "objectName arg ?arg ...?"); @@ -952,49 +1163,9 @@ TclOOObjDefObjCmd( } TclDecrRefCount(objNameObj); } else { - Tcl_Obj *objPtr, *obj2Ptr, **objs; - Tcl_Command cmd; - int dummy; - - /* - * More than one argument: fire them through the ensemble processing - * engine so that everything appears to be good and proper in error - * messages. Note that we cannot just concatenate and send through - * Tcl_EvalObjEx, as that doesn't do ensemble processing, and we - * cannot go through Tcl_EvalObjv without the extra work to pre-find - * the command, as that finds command names in the wrong namespace at - * the moment. Ugly! - */ - - isRoot = TclInitRewriteEnsemble(interp, 3, 1, objv); - - /* - * Build the list of arguments using a Tcl_Obj as a workspace. See - * comments above for why these contortions are necessary. - */ - - objPtr = Tcl_NewObj(); - obj2Ptr = Tcl_NewObj(); - cmd = FindCommand(interp, objv[2], fPtr->objdefNs); - if (cmd == NULL) { - /* punt this case! */ - Tcl_AppendObjToObj(obj2Ptr, objv[2]); - } else { - Tcl_GetCommandFullName(interp, cmd, obj2Ptr); - } - Tcl_ListObjAppendElement(NULL, objPtr, obj2Ptr); - /* TODO: overflow? */ - Tcl_ListObjReplace(NULL, objPtr, 1, 0, objc-3, objv+3); - Tcl_ListObjGetElements(NULL, objPtr, &dummy, &objs); - - result = Tcl_EvalObjv(interp, objc-2, objs, TCL_EVAL_INVOKE); - - if (isRoot) { - TclResetRewriteEnsemble(interp, 1); - } - Tcl_DecrRefCount(objPtr); + result = MagicDefinitionInvoke(interp, fPtr->objdefNs, 2, objc, objv); } - DelRef(oPtr); + TclOODecrRefCount(oPtr); /* * Restore the previous "current" namespace. @@ -1008,6 +1179,7 @@ TclOOObjDefObjCmd( * ---------------------------------------------------------------------- * * TclOODefineSelfObjCmd -- + * * Implementation of the "self" subcommand of the "oo::define" command. * Works by effectively doing the same as 'namespace eval', but with * extra magic applied so that the object to be modified is known to the @@ -1025,19 +1197,21 @@ TclOODefineSelfObjCmd( Tcl_Obj *const *objv) { Foundation *fPtr = TclOOGetFoundation(interp); - int result; Object *oPtr; - - if (objc < 2) { - Tcl_WrongNumArgs(interp, 1, objv, "arg ?arg ...?"); - return TCL_ERROR; - } + int result, private; oPtr = (Object *) TclOOGetDefineCmdContext(interp); if (oPtr == NULL) { return TCL_ERROR; } + if (objc < 2) { + Tcl_SetObjResult(interp, TclOOObjectName(interp, oPtr)); + return TCL_OK; + } + + private = IsPrivateDefine(interp); + /* * Make the oo::objdefine namespace the current namespace and evaluate the * command(s). @@ -1046,6 +1220,9 @@ TclOODefineSelfObjCmd( if (InitDefineContext(interp, fPtr->objdefNs, oPtr, objc,objv) != TCL_OK){ return TCL_ERROR; } + if (private) { + ((Interp *) interp)->varFramePtr->isProcCallFrame = PRIVATE_FRAME; + } AddRef(oPtr); if (objc == 2) { @@ -1053,60 +1230,128 @@ TclOODefineSelfObjCmd( Tcl_IncrRefCount(objNameObj); result = TclEvalObjEx(interp, objv[1], 0, - ((Interp *)interp)->cmdFramePtr, 2); + ((Interp *)interp)->cmdFramePtr, 1); if (result == TCL_ERROR) { GenerateErrorInfo(interp, oPtr, objNameObj, "class object"); } TclDecrRefCount(objNameObj); } else { - Tcl_Obj *objPtr, *obj2Ptr, **objs; - Tcl_Command cmd; - int isRoot, dummy; + result = MagicDefinitionInvoke(interp, fPtr->objdefNs, 1, objc, objv); + } + TclOODecrRefCount(oPtr); - /* - * More than one argument: fire them through the ensemble processing - * engine so that everything appears to be good and proper in error - * messages. Note that we cannot just concatenate and send through - * Tcl_EvalObjEx, as that doesn't do ensemble processing, and we - * cannot go through Tcl_EvalObjv without the extra work to pre-find - * the command, as that finds command names in the wrong namespace at - * the moment. Ugly! - */ + /* + * Restore the previous "current" namespace. + */ - isRoot = TclInitRewriteEnsemble(interp, 2, 1, objv); + TclPopStackFrame(interp); + return result; +} + +/* + * ---------------------------------------------------------------------- + * + * TclOODefineObjSelfObjCmd -- + * + * Implementation of the "self" subcommand of the "oo::objdefine" + * command. + * + * ---------------------------------------------------------------------- + */ - /* - * Build the list of arguments using a Tcl_Obj as a workspace. See - * comments above for why these contortions are necessary. - */ +int +TclOODefineObjSelfObjCmd( + ClientData clientData, + Tcl_Interp *interp, + int objc, + Tcl_Obj *const *objv) +{ + Object *oPtr; - objPtr = Tcl_NewObj(); - obj2Ptr = Tcl_NewObj(); - cmd = FindCommand(interp, objv[1], fPtr->objdefNs); - if (cmd == NULL) { - /* punt this case! */ - Tcl_AppendObjToObj(obj2Ptr, objv[1]); - } else { - Tcl_GetCommandFullName(interp, cmd, obj2Ptr); - } - Tcl_ListObjAppendElement(NULL, objPtr, obj2Ptr); - /* TODO: overflow? */ - Tcl_ListObjReplace(NULL, objPtr, 1, 0, objc-2, objv+2); - Tcl_ListObjGetElements(NULL, objPtr, &dummy, &objs); + if (objc != 1) { + Tcl_WrongNumArgs(interp, 1, objv, NULL); + return TCL_ERROR; + } + + oPtr = (Object *) TclOOGetDefineCmdContext(interp); + if (oPtr == NULL) { + return TCL_ERROR; + } + + Tcl_SetObjResult(interp, TclOOObjectName(interp, oPtr)); + return TCL_OK; +} + +/* + * ---------------------------------------------------------------------- + * + * TclOODefinePrivateObjCmd -- + * + * Implementation of the "private" subcommand of the "oo::define" + * and "oo::objdefine" commands. + * + * ---------------------------------------------------------------------- + */ - result = Tcl_EvalObjv(interp, objc-1, objs, TCL_EVAL_INVOKE); - if (isRoot) { - TclResetRewriteEnsemble(interp, 1); +int +TclOODefinePrivateObjCmd( + ClientData clientData, + Tcl_Interp *interp, + int objc, + Tcl_Obj *const *objv) +{ + int isInstancePrivate = (clientData != NULL); + /* Just so that we can generate the correct + * error message depending on the context of + * usage of this function. */ + Interp *iPtr = (Interp *) interp; + Object *oPtr = (Object *) TclOOGetDefineCmdContext(interp); + int saved; /* The saved flag. We restore it on exit so + * that [private private ...] doesn't make + * things go weird. */ + int result; + + if (oPtr == NULL) { + return TCL_ERROR; + } + if (objc == 1) { + Tcl_SetObjResult(interp, Tcl_NewBooleanObj(IsPrivateDefine(interp))); + return TCL_OK; + } + + /* + * Change the frame type flag while evaluating the body. + */ + + saved = iPtr->varFramePtr->isProcCallFrame; + iPtr->varFramePtr->isProcCallFrame = PRIVATE_FRAME; + + /* + * Evaluate the body; standard pattern. + */ + + AddRef(oPtr); + if (objc == 2) { + Tcl_Obj *objNameObj = TclOOObjectName(interp, oPtr); + + Tcl_IncrRefCount(objNameObj); + result = TclEvalObjEx(interp, objv[1], 0, iPtr->cmdFramePtr, 1); + if (result == TCL_ERROR) { + GenerateErrorInfo(interp, oPtr, objNameObj, + isInstancePrivate ? "object" : "class"); } - Tcl_DecrRefCount(objPtr); + TclDecrRefCount(objNameObj); + } else { + result = MagicDefinitionInvoke(interp, TclGetCurrentNamespace(interp), + 1, objc, objv); } - DelRef(oPtr); + TclOODecrRefCount(oPtr); /* - * Restore the previous "current" namespace. + * Restore the frame type flag to what it was previously. */ - TclPopStackFrame(interp); + iPtr->varFramePtr->isProcCallFrame = saved; return result; } @@ -1114,6 +1359,7 @@ TclOODefineSelfObjCmd( * ---------------------------------------------------------------------- * * TclOODefineClassObjCmd -- + * * Implementation of the "class" subcommand of the "oo::objdefine" * command. * @@ -1130,6 +1376,7 @@ TclOODefineClassObjCmd( Object *oPtr; Class *clsPtr; Foundation *fPtr = TclOOGetFoundation(interp); + int wasClass, willBeClass; /* * Parse the context to get the object to operate on. @@ -1165,19 +1412,10 @@ TclOODefineClassObjCmd( if (clsPtr == NULL) { return TCL_ERROR; } - - /* - * Apply semantic checks. In particular, classes and non-classes are not - * interchangable (too complicated to do the conversion!) so we must - * produce an error if any attempt is made to swap from one to the other. - */ - - if ((oPtr->classPtr==NULL) == TclOOIsReachable(fPtr->classCls, clsPtr)) { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "may not change a %sclass object into a %sclass object", - (oPtr->classPtr==NULL ? "non-" : ""), - (oPtr->classPtr==NULL ? "" : "non-"))); - Tcl_SetErrorCode(interp, "TCL", "OO", "TRANSMUTATION", NULL); + if (oPtr == clsPtr->thisPtr) { + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "may not change classes into an instance of themselves", -1)); + Tcl_SetErrorCode(interp, "TCL", "OO", "MONKEY_BUSINESS", NULL); return TCL_ERROR; } @@ -1185,13 +1423,36 @@ TclOODefineClassObjCmd( * Set the object's class. */ + wasClass = (oPtr->classPtr != NULL); + willBeClass = (TclOOIsReachable(fPtr->classCls, clsPtr)); + if (oPtr->selfCls != clsPtr) { TclOORemoveFromInstances(oPtr, oPtr->selfCls); + TclOODecrRefCount(oPtr->selfCls->thisPtr); oPtr->selfCls = clsPtr; + AddRef(oPtr->selfCls->thisPtr); TclOOAddToInstances(oPtr, oPtr->selfCls); - if (!(clsPtr->thisPtr->flags & OBJECT_DELETED)) { - oPtr->flags &= ~CLASS_GONE; + + /* + * Create or delete the class guts if necessary. + */ + + if (wasClass && !willBeClass) { + /* + * This is the most global of all epochs. Bump it! No cache can be + * trusted! + */ + + TclOORemoveFromMixins(oPtr->classPtr, oPtr); + oPtr->fPtr->epoch++; + oPtr->flags |= DONT_DELETE; + TclOODeleteDescendants(interp, oPtr); + oPtr->flags &= ~DONT_DELETE; + TclOOReleaseClassContents(interp, oPtr); + } else if (!wasClass && willBeClass) { + TclOOAllocClass(interp, oPtr); } + if (oPtr->classPtr != NULL) { BumpGlobalEpoch(interp, oPtr->classPtr); } else { @@ -1205,6 +1466,7 @@ TclOODefineClassObjCmd( * ---------------------------------------------------------------------- * * TclOODefineConstructorObjCmd -- + * * Implementation of the "constructor" subcommand of the "oo::define" * command. * @@ -1273,6 +1535,7 @@ TclOODefineConstructorObjCmd( * ---------------------------------------------------------------------- * * TclOODefineDeleteMethodObjCmd -- + * * Implementation of the "deletemethod" subcommand of the "oo::define" * and "oo::objdefine" commands. * @@ -1329,6 +1592,7 @@ TclOODefineDeleteMethodObjCmd( * ---------------------------------------------------------------------- * * TclOODefineDestructorObjCmd -- + * * Implementation of the "destructor" subcommand of the "oo::define" * command. * @@ -1393,6 +1657,7 @@ TclOODefineDestructorObjCmd( * ---------------------------------------------------------------------- * * TclOODefineExportObjCmd -- + * * Implementation of the "export" subcommand of the "oo::define" and * "oo::objdefine" commands. * @@ -1463,8 +1728,9 @@ TclOODefineExportObjCmd( } else { mPtr = Tcl_GetHashValue(hPtr); } - if (isNew || !(mPtr->flags & PUBLIC_METHOD)) { + if (isNew || !(mPtr->flags & (PUBLIC_METHOD | PRIVATE_METHOD))) { mPtr->flags |= PUBLIC_METHOD; + mPtr->flags &= ~TRUE_PRIVATE_METHOD; changed = 1; } } @@ -1487,6 +1753,7 @@ TclOODefineExportObjCmd( * ---------------------------------------------------------------------- * * TclOODefineForwardObjCmd -- + * * Implementation of the "forward" subcommand of the "oo::define" and * "oo::objdefine" commands. * @@ -1523,6 +1790,9 @@ TclOODefineForwardObjCmd( } isPublic = Tcl_StringMatch(TclGetString(objv[1]), "[a-z]*") ? PUBLIC_METHOD : 0; + if (IsPrivateDefine(interp)) { + isPublic = TRUE_PRIVATE_METHOD; + } /* * Create the method structure. @@ -1547,6 +1817,7 @@ TclOODefineForwardObjCmd( * ---------------------------------------------------------------------- * * TclOODefineMethodObjCmd -- + * * Implementation of the "method" subcommand of the "oo::define" and * "oo::objdefine" commands. * @@ -1581,6 +1852,9 @@ TclOODefineMethodObjCmd( } isPublic = Tcl_StringMatch(TclGetString(objv[1]), "[a-z]*") ? PUBLIC_METHOD : 0; + if (IsPrivateDefine(interp)) { + isPublic = TRUE_PRIVATE_METHOD; + } /* * Create the method by using the right back-end API. @@ -1603,70 +1877,8 @@ TclOODefineMethodObjCmd( /* * ---------------------------------------------------------------------- * - * TclOODefineMixinObjCmd -- - * Implementation of the "mixin" subcommand of the "oo::define" and - * "oo::objdefine" commands. - * - * ---------------------------------------------------------------------- - */ - -int -TclOODefineMixinObjCmd( - ClientData clientData, - Tcl_Interp *interp, - const int objc, - Tcl_Obj *const *objv) -{ - int isInstanceMixin = (clientData != NULL); - Object *oPtr = (Object *) TclOOGetDefineCmdContext(interp); - Class **mixins; - int i; - - if (oPtr == NULL) { - return TCL_ERROR; - } - if (!isInstanceMixin && !oPtr->classPtr) { - Tcl_SetObjResult(interp, Tcl_NewStringObj( - "attempt to misuse API", -1)); - Tcl_SetErrorCode(interp, "TCL", "OO", "MONKEY_BUSINESS", NULL); - return TCL_ERROR; - } - mixins = TclStackAlloc(interp, sizeof(Class *) * (objc-1)); - - for (i=1 ; i<objc ; i++) { - Class *clsPtr = GetClassInOuterContext(interp, objv[i], - "may only mix in classes"); - - if (clsPtr == NULL) { - goto freeAndError; - } - if (!isInstanceMixin && TclOOIsReachable(oPtr->classPtr, clsPtr)) { - Tcl_SetObjResult(interp, Tcl_NewStringObj( - "may not mix a class into itself", -1)); - Tcl_SetErrorCode(interp, "TCL", "OO", "SELF_MIXIN", NULL); - goto freeAndError; - } - mixins[i-1] = clsPtr; - } - - if (isInstanceMixin) { - TclOOObjectSetMixins(oPtr, objc-1, mixins); - } else { - TclOOClassSetMixins(interp, oPtr->classPtr, objc-1, mixins); - } - - TclStackFree(interp, mixins); - return TCL_OK; - - freeAndError: - TclStackFree(interp, mixins); - return TCL_ERROR; -} - -/* - * ---------------------------------------------------------------------- - * * TclOODefineRenameMethodObjCmd -- + * * Implementation of the "renamemethod" subcommand of the "oo::define" * and "oo::objdefine" commands. * @@ -1723,6 +1935,7 @@ TclOODefineRenameMethodObjCmd( * ---------------------------------------------------------------------- * * TclOODefineUnexportObjCmd -- + * * Implementation of the "unexport" subcommand of the "oo::define" and * "oo::objdefine" commands. * @@ -1793,8 +2006,8 @@ TclOODefineUnexportObjCmd( } else { mPtr = Tcl_GetHashValue(hPtr); } - if (isNew || mPtr->flags & PUBLIC_METHOD) { - mPtr->flags &= ~PUBLIC_METHOD; + if (isNew || mPtr->flags & (PUBLIC_METHOD | TRUE_PRIVATE_METHOD)) { + mPtr->flags &= ~(PUBLIC_METHOD | TRUE_PRIVATE_METHOD); changed = 1; } } @@ -1817,6 +2030,7 @@ TclOODefineUnexportObjCmd( * ---------------------------------------------------------------------- * * Tcl_ClassSetConstructor, Tcl_ClassSetDestructor -- + * * How to install a constructor or destructor into a class; API to call * from C. * @@ -1871,6 +2085,7 @@ Tcl_ClassSetDestructor( * ---------------------------------------------------------------------- * * TclOODefineSlots -- + * * Create the "::oo::Slot" class and its standard instances. Class * definition is empty at the stage (added by scripting). * @@ -1884,6 +2099,7 @@ TclOODefineSlots( const struct DeclaredSlot *slotInfoPtr; Tcl_Obj *getName = Tcl_NewStringObj("Get", -1); Tcl_Obj *setName = Tcl_NewStringObj("Set", -1); + Tcl_Obj *resolveName = Tcl_NewStringObj("Resolve", -1); Class *slotCls; slotCls = ((Object *) Tcl_NewObjectInstance(fPtr->interp, (Tcl_Class) @@ -1893,9 +2109,10 @@ TclOODefineSlots( } Tcl_IncrRefCount(getName); Tcl_IncrRefCount(setName); + Tcl_IncrRefCount(resolveName); for (slotInfoPtr = slots ; slotInfoPtr->name ; slotInfoPtr++) { Tcl_Object slotObject = Tcl_NewObjectInstance(fPtr->interp, - (Tcl_Class) slotCls, slotInfoPtr->name, NULL,-1,NULL,0); + (Tcl_Class) slotCls, slotInfoPtr->name, NULL, -1, NULL, 0); if (slotObject == NULL) { continue; @@ -1904,9 +2121,14 @@ TclOODefineSlots( &slotInfoPtr->getterType, NULL); Tcl_NewInstanceMethod(fPtr->interp, slotObject, setName, 0, &slotInfoPtr->setterType, NULL); + if (slotInfoPtr->resolverType.callProc) { + Tcl_NewInstanceMethod(fPtr->interp, slotObject, resolveName, 0, + &slotInfoPtr->resolverType, NULL); + } } Tcl_DecrRefCount(getName); Tcl_DecrRefCount(setName); + Tcl_DecrRefCount(resolveName); return TCL_OK; } @@ -1914,6 +2136,7 @@ TclOODefineSlots( * ---------------------------------------------------------------------- * * ClassFilterGet, ClassFilterSet -- + * * Implementation of the "filter" slot accessors of the "oo::define" * command. * @@ -1993,6 +2216,7 @@ ClassFilterSet( * ---------------------------------------------------------------------- * * ClassMixinGet, ClassMixinSet -- + * * Implementation of the "mixin" slot accessors of the "oo::define" * command. * @@ -2074,6 +2298,7 @@ ClassMixinSet( mixins[i] = GetClassInOuterContext(interp, mixinv[i], "may only mix in classes"); if (mixins[i] == NULL) { + i--; goto freeAndError; } if (TclOOIsReachable(oPtr->classPtr, mixins[i])) { @@ -2097,6 +2322,7 @@ ClassMixinSet( * ---------------------------------------------------------------------- * * ClassSuperGet, ClassSuperSet -- + * * Implementation of the "superclass" slot accessors of the "oo::define" * command. * @@ -2191,16 +2417,19 @@ ClassSuperSet( if (superc == 0) { superclasses = ckrealloc(superclasses, sizeof(Class *)); - superclasses[0] = oPtr->fPtr->objectCls; - superc = 1; if (TclOOIsReachable(oPtr->fPtr->classCls, oPtr->classPtr)) { superclasses[0] = oPtr->fPtr->classCls; + } else { + superclasses[0] = oPtr->fPtr->objectCls; } + superc = 1; + AddRef(superclasses[0]->thisPtr); } else { for (i=0 ; i<superc ; i++) { superclasses[i] = GetClassInOuterContext(interp, superv[i], "only a class can be a superclass"); if (superclasses[i] == NULL) { + i--; goto failedAfterAlloc; } for (j=0 ; j<i ; j++) { @@ -2217,9 +2446,19 @@ ClassSuperSet( "attempt to form circular dependency graph", -1)); Tcl_SetErrorCode(interp, "TCL", "OO", "CIRCULARITY", NULL); failedAfterAlloc: + for (; i > 0; i--) { + TclOODecrRefCount(superclasses[i]->thisPtr); + } ckfree(superclasses); return TCL_ERROR; } + + /* + * Corresponding TclOODecrRefCount() is near the end of this + * function. + */ + + AddRef(superclasses[i]->thisPtr); } } @@ -2233,6 +2472,7 @@ ClassSuperSet( if (oPtr->classPtr->superclasses.num != 0) { FOREACH(superPtr, oPtr->classPtr->superclasses) { TclOORemoveFromSubclasses(oPtr->classPtr, superPtr); + TclOODecrRefCount(superPtr->thisPtr); } ckfree(oPtr->classPtr->superclasses.list); } @@ -2250,6 +2490,7 @@ ClassSuperSet( * ---------------------------------------------------------------------- * * ClassVarsGet, ClassVarsSet -- + * * Implementation of the "variable" slot accessors of the "oo::define" * command. * @@ -2265,7 +2506,7 @@ ClassVarsGet( Tcl_Obj *const *objv) { Object *oPtr = (Object *) TclOOGetDefineCmdContext(interp); - Tcl_Obj *resultObj, *variableObj; + Tcl_Obj *resultObj; int i; if (Tcl_ObjectContextSkippedArgs(context) != objc) { @@ -2283,8 +2524,18 @@ ClassVarsGet( } resultObj = Tcl_NewObj(); - FOREACH(variableObj, oPtr->classPtr->variables) { - Tcl_ListObjAppendElement(NULL, resultObj, variableObj); + if (IsPrivateDefine(interp)) { + PrivateVariableMapping *privatePtr; + + FOREACH_STRUCT(privatePtr, oPtr->classPtr->privateVariables) { + Tcl_ListObjAppendElement(NULL, resultObj, privatePtr->variableObj); + } + } else { + Tcl_Obj *variableObj; + + FOREACH(variableObj, oPtr->classPtr->variables) { + Tcl_ListObjAppendElement(NULL, resultObj, variableObj); + } } Tcl_SetObjResult(interp, resultObj); return TCL_OK; @@ -2300,7 +2551,7 @@ ClassVarsSet( { Object *oPtr = (Object *) TclOOGetDefineCmdContext(interp); int varc; - Tcl_Obj **varv, *variableObj; + Tcl_Obj **varv; int i; if (Tcl_ObjectContextSkippedArgs(context)+1 != objc) { @@ -2341,49 +2592,11 @@ ClassVarsSet( } } - for (i=0 ; i<varc ; i++) { - Tcl_IncrRefCount(varv[i]); - } - FOREACH(variableObj, oPtr->classPtr->variables) { - Tcl_DecrRefCount(variableObj); - } - if (i != varc) { - if (varc == 0) { - ckfree(oPtr->classPtr->variables.list); - } else if (i) { - oPtr->classPtr->variables.list = (Tcl_Obj **) - ckrealloc((char *) oPtr->classPtr->variables.list, - sizeof(Tcl_Obj *) * varc); - } else { - oPtr->classPtr->variables.list = (Tcl_Obj **) - ckalloc(sizeof(Tcl_Obj *) * varc); - } - } - - oPtr->classPtr->variables.num = 0; - if (varc > 0) { - int created, n; - Tcl_HashTable uniqueTable; - - Tcl_InitObjHashTable(&uniqueTable); - for (i=n=0 ; i<varc ; i++) { - Tcl_CreateHashEntry(&uniqueTable, varv[i], &created); - if (created) { - oPtr->classPtr->variables.list[n++] = varv[i]; - } else { - Tcl_DecrRefCount(varv[i]); - } - } - oPtr->classPtr->variables.num = n; - - /* - * Shouldn't be necessary, but maintain num/list invariant. - */ - - oPtr->classPtr->variables.list = (Tcl_Obj **) - ckrealloc((char *) oPtr->classPtr->variables.list, - sizeof(Tcl_Obj *) * n); - Tcl_DeleteHashTable(&uniqueTable); + if (IsPrivateDefine(interp)) { + InstallPrivateVariableMapping(&oPtr->classPtr->privateVariables, + varc, varv, oPtr->classPtr->thisPtr->creationEpoch); + } else { + InstallStandardVariableMapping(&oPtr->classPtr->variables, varc, varv); } return TCL_OK; } @@ -2392,6 +2605,7 @@ ClassVarsSet( * ---------------------------------------------------------------------- * * ObjectFilterGet, ObjectFilterSet -- + * * Implementation of the "filter" slot accessors of the "oo::objdefine" * command. * @@ -2459,6 +2673,7 @@ ObjFilterSet( * ---------------------------------------------------------------------- * * ObjectMixinGet, ObjectMixinSet -- + * * Implementation of the "mixin" slot accessors of the "oo::objdefine" * command. * @@ -2544,6 +2759,7 @@ ObjMixinSet( * ---------------------------------------------------------------------- * * ObjectVarsGet, ObjectVarsSet -- + * * Implementation of the "variable" slot accessors of the "oo::objdefine" * command. * @@ -2559,7 +2775,7 @@ ObjVarsGet( Tcl_Obj *const *objv) { Object *oPtr = (Object *) TclOOGetDefineCmdContext(interp); - Tcl_Obj *resultObj, *variableObj; + Tcl_Obj *resultObj; int i; if (Tcl_ObjectContextSkippedArgs(context) != objc) { @@ -2571,8 +2787,18 @@ ObjVarsGet( } resultObj = Tcl_NewObj(); - FOREACH(variableObj, oPtr->variables) { - Tcl_ListObjAppendElement(NULL, resultObj, variableObj); + if (IsPrivateDefine(interp)) { + PrivateVariableMapping *privatePtr; + + FOREACH_STRUCT(privatePtr, oPtr->privateVariables) { + Tcl_ListObjAppendElement(NULL, resultObj, privatePtr->variableObj); + } + } else { + Tcl_Obj *variableObj; + + FOREACH(variableObj, oPtr->variables) { + Tcl_ListObjAppendElement(NULL, resultObj, variableObj); + } } Tcl_SetObjResult(interp, resultObj); return TCL_OK; @@ -2588,7 +2814,7 @@ ObjVarsSet( { Object *oPtr = (Object *) TclOOGetDefineCmdContext(interp); int varc, i; - Tcl_Obj **varv, *variableObj; + Tcl_Obj **varv; if (Tcl_ObjectContextSkippedArgs(context)+1 != objc) { Tcl_WrongNumArgs(interp, Tcl_ObjectContextSkippedArgs(context), objv, @@ -2621,50 +2847,66 @@ ObjVarsSet( return TCL_ERROR; } } - for (i=0 ; i<varc ; i++) { - Tcl_IncrRefCount(varv[i]); - } - FOREACH(variableObj, oPtr->variables) { - Tcl_DecrRefCount(variableObj); - } - if (i != varc) { - if (varc == 0) { - ckfree(oPtr->variables.list); - } else if (i) { - oPtr->variables.list = (Tcl_Obj **) - ckrealloc((char *) oPtr->variables.list, - sizeof(Tcl_Obj *) * varc); - } else { - oPtr->variables.list = (Tcl_Obj **) - ckalloc(sizeof(Tcl_Obj *) * varc); - } + if (IsPrivateDefine(interp)) { + InstallPrivateVariableMapping(&oPtr->privateVariables, varc, varv, + oPtr->creationEpoch); + } else { + InstallStandardVariableMapping(&oPtr->variables, varc, varv); } - oPtr->variables.num = 0; - if (varc > 0) { - int created, n; - Tcl_HashTable uniqueTable; + return TCL_OK; +} + +/* + * ---------------------------------------------------------------------- + * + * ResolveClass -- + * + * Implementation of the "Resolve" support method for some slots (those + * that are slots around a list of classes). This resolves possible class + * names to their fully-qualified names if possible. + * + * ---------------------------------------------------------------------- + */ - Tcl_InitObjHashTable(&uniqueTable); - for (i=n=0 ; i<varc ; i++) { - Tcl_CreateHashEntry(&uniqueTable, varv[i], &created); - if (created) { - oPtr->variables.list[n++] = varv[i]; - } else { - Tcl_DecrRefCount(varv[i]); - } - } - oPtr->variables.num = n; +static int +ResolveClass( + ClientData clientData, + Tcl_Interp *interp, + Tcl_ObjectContext context, + int objc, + Tcl_Obj *const *objv) +{ + int idx = Tcl_ObjectContextSkippedArgs(context); + Object *oPtr = (Object *) TclOOGetDefineCmdContext(interp); + Class *clsPtr; - /* - * Shouldn't be necessary, but maintain num/list invariant. - */ + /* + * Check if were called wrongly. The definition context isn't used... + * except that GetClassInOuterContext() assumes that it is there. + */ - oPtr->variables.list = (Tcl_Obj **) - ckrealloc((char *) oPtr->variables.list, - sizeof(Tcl_Obj *) * n); - Tcl_DeleteHashTable(&uniqueTable); + if (oPtr == NULL) { + return TCL_ERROR; + } else if (objc != idx + 1) { + Tcl_WrongNumArgs(interp, idx, objv, "slotElement"); + return TCL_ERROR; + } + + /* + * Resolve the class if possible. If not, remove any resolution error and + * return what we've got anyway as the failure might not be fatal overall. + */ + + clsPtr = GetClassInOuterContext(interp, objv[idx], + "USER SHOULD NOT SEE THIS MESSAGE"); + if (clsPtr == NULL) { + Tcl_ResetResult(interp); + Tcl_SetObjResult(interp, objv[idx]); + } else { + Tcl_SetObjResult(interp, TclOOObjectName(interp, clsPtr->thisPtr)); } + return TCL_OK; } |
