Tcl Source Code

2011-04-04  Donal K. Fellows  <[email protected]>

	* generic/tclOO.c, generic/tclOOBasic.c, generic/tclOODefineCmds.c
	* generic/tclOOInfo.c, generic/tclOOMethod.c: More generation of
	error codes (TclOO miscellany).

	* generic/tclCmdAH.c, generic/tclCmdIL.c: More generation of error
	codes (miscellaneous commands mostly already handled).

2011-04-04  Don Porter  <[email protected]>

	* README:	Updated README files, repairing broken URLs and

     * that's not allowed.
     */

    if (nameStr && Tcl_FindCommand(interp, nameStr, NULL,
	    TCL_NAMESPACE_ONLY)) {
	Tcl_AppendResult(interp, "can't create object \"", nameStr,
		"\": command already exists with that name", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "OVERWRITE_OBJECT", NULL);
	return NULL;
    }

    /*
     * Create the object.
     */

	     * Force this if it isn't already an error (don't want to lose
	     * errors by accident...) [Bug 2903011]
	     */

	    if (result != TCL_ERROR && (flags & OBJECT_DELETED)) {
		Tcl_SetResult(interp, "object deleted in constructor",
			TCL_STATIC);
		Tcl_SetErrorCode(interp, "TCL", "OO", "STILLBORN", NULL);
		result = TCL_ERROR;
	    }
	    TclOODeleteContext(contextPtr);
	    if (result != TCL_OK) {
		Tcl_DiscardInterpState(state);

		/*

     * that's not allowed.
     */

    if (nameStr && Tcl_FindCommand(interp, nameStr, NULL,
	    TCL_NAMESPACE_ONLY)) {
	Tcl_AppendResult(interp, "can't create object \"", nameStr,
		"\": command already exists with that name", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "OVERWRITE_OBJECT", NULL);
	return TCL_ERROR;
    }

    /*
     * Create the object.
     */

     * It's an error if the object was whacked in the constructor. Force this
     * if it isn't already an error (don't want to lose errors by accident...)
     * [Bug 2903011]
     */

    if (result != TCL_ERROR && (flags & OBJECT_DELETED)) {
	Tcl_SetResult(interp, "object deleted in constructor", TCL_STATIC);
	Tcl_SetErrorCode(interp, "TCL", "OO", "STILLBORN", NULL);
	result = TCL_ERROR;
    }
    TclOODeleteContext(contextPtr);
    if (result != TCL_OK) {
	Tcl_DiscardInterpState(state);

	/*

    /*
     * Sanity checks.
     */

    if (targetName == NULL && oPtr->classPtr != NULL) {
	Tcl_AppendResult(interp, "must supply a name when copying a class",
		NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "NO_COPY_TARGET", NULL);
	return NULL;
    }
    if (oPtr->flags & ROOT_CLASS) {
	Tcl_AppendResult(interp, "may not clone the class of classes", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "CLONING_CLASS", NULL);
	return NULL;
    }

    /*
     * Build the instance. Note that this does not run any constructors.
     */

	contextPtr = TclOOGetCallContext(oPtr, mappedMethodName,
		flags | (oPtr->flags & FILTER_HANDLING), methodNamePtr);
	Tcl_DecrRefCount(mappedMethodName);
	if (contextPtr == NULL) {
	    Tcl_AppendResult(interp, "impossible to invoke method \"",
		    TclGetString(methodNamePtr),
		    "\": no defined method or unknown method", NULL);
	    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "METHOD_MAPPED",
		    TclGetString(methodNamePtr), NULL);
	    return TCL_ERROR;
	}
    } else {
	/*
	 * Get the call chain.
	 */

    noMapping:
	contextPtr = TclOOGetCallContext(oPtr, methodNamePtr,
		flags | (oPtr->flags & FILTER_HANDLING), NULL);
	if (contextPtr == NULL) {
	    Tcl_AppendResult(interp, "impossible to invoke method \"",
		    TclGetString(methodNamePtr),
		    "\": no defined method or unknown method", NULL);
	    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "METHOD",
		    TclGetString(methodNamePtr), NULL);
	    return TCL_ERROR;
	}
    }

    /*
     * Check to see if we need to apply magical tricks to start part way
     * through the call chain.

	    if (miPtr->mPtr->declaringClassPtr == startCls) {
		break;
	    }
	}
	if (contextPtr->index >= contextPtr->callPtr->numChain) {
	    Tcl_SetResult(interp, "no valid method implementation",
		    TCL_STATIC);
	    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "METHOD",
		    TclGetString(methodNamePtr), NULL);
	    TclOODeleteContext(contextPtr);
	    return TCL_ERROR;
	}
    }

    /*
     * Invoke the call chain, locking the object structure against deletion

	    methodType = "destructor";
	} else {
	    methodType = "method";
	}

	Tcl_AppendResult(interp, "no next ", methodType, " implementation",
		NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "NOTHING_NEXT", NULL);
	return TCL_ERROR;
    }

    /*
     * Advance to the next method implementation in the chain in the method
     * call context while we process the body. However, need to adjust the
     * argument-skip control because we're guaranteed to have a single prefix

	    methodType = "destructor";
	} else {
	    methodType = "method";
	}

	Tcl_AppendResult(interp, "no next ", methodType, " implementation",
		NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "NOTHING_NEXT", NULL);
	return TCL_ERROR;
    }

    /*
     * Advance to the next method implementation in the chain in the method
     * call context while we process the body. However, need to adjust the
     * argument-skip control because we're guaranteed to have a single prefix

	}
    }
    return cmdPtr->objClientData;

  notAnObject:
    Tcl_AppendResult(interp, TclGetString(objPtr),
	    " does not refer to an object", NULL);
    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "OBJECT", TclGetString(objPtr),
	    NULL);
    return NULL;
}

/*
 * ----------------------------------------------------------------------
 *
 * TclOOIsReachable --

     */

    if (oPtr->classPtr == NULL) {
	Tcl_Obj *cmdnameObj = TclOOObjectName(interp, oPtr);

	Tcl_AppendResult(interp, "object \"", TclGetString(cmdnameObj),
		"\" is not a class", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "INSTANTIATE_NONCLASS", NULL);
	return TCL_ERROR;
    }

    /*
     * Check we have the right number of (sensible) arguments.
     */

     */

    if (oPtr->classPtr == NULL) {
	Tcl_Obj *cmdnameObj = TclOOObjectName(interp, oPtr);

	Tcl_AppendResult(interp, "object \"", TclGetString(cmdnameObj),
		"\" is not a class", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "INSTANTIATE_NONCLASS", NULL);
	return TCL_ERROR;
    }

    /*
     * Check we have the right number of (sensible) arguments.
     */

     */

    if (oPtr->classPtr == NULL) {
	Tcl_Obj *cmdnameObj = TclOOObjectName(interp, oPtr);

	Tcl_AppendResult(interp, "object \"", TclGetString(cmdnameObj),
		"\" is not a class", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "INSTANTIATE_NONCLASS", NULL);
	return TCL_ERROR;
    }

    /*
     * Make the object and return its name.
     */

    int isNew;

    if (!useClass) {
	if (!oPtr->methodsPtr) {
	noSuchMethod:
	    Tcl_AppendResult(interp, "method ", TclGetString(fromPtr),
		    " does not exist", NULL);
	    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "METHOD",
		    TclGetString(fromPtr), NULL);
	    return TCL_ERROR;
	}
	hPtr = Tcl_FindHashEntry(oPtr->methodsPtr, (char *) fromPtr);
	if (hPtr == NULL) {
	    goto noSuchMethod;
	}
	if (toPtr) {
	    newHPtr = Tcl_CreateHashEntry(oPtr->methodsPtr, (char *) toPtr,
		    &isNew);
	    if (hPtr == newHPtr) {
	    renameToSelf:
		Tcl_AppendResult(interp, "cannot rename method to itself",
			NULL);
		Tcl_SetErrorCode(interp, "TCL", "OO", "RENAME_TO_SELF", NULL);
		return TCL_ERROR;
	    } else if (!isNew) {
	    renameToExisting:
		Tcl_AppendResult(interp, "method called ",
			TclGetString(toPtr), " already exists", NULL);
		Tcl_SetErrorCode(interp, "TCL", "OO", "RENAME_OVER", NULL);
		return TCL_ERROR;
	    }
	}
    } else {
	hPtr = Tcl_FindHashEntry(&oPtr->classPtr->classMethods,
		(char *) fromPtr);
	if (hPtr == NULL) {

    Tcl_HashSearch search;
    Tcl_HashEntry *hPtr;
    int soughtLen;
    const char *soughtStr, *matchedStr = NULL;

    if (objc < 2) {
	Tcl_AppendResult(interp, "bad call of unknown handler", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "BAD_UNKNOWN", NULL);
	return TCL_ERROR;
    }
    if (TclOOGetDefineCmdContext(interp) == NULL) {
	return TCL_ERROR;
    }

    soughtStr = Tcl_GetStringFromObj(objv[1], &soughtLen);

	Tcl_DecrRefCount(newObjv[0]);
	TclStackFree(interp, newObjv);
	return result;
    }

  noMatch:
    Tcl_AppendResult(interp, "invalid command name \"",soughtStr,"\"", NULL);
    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "COMMAND", soughtStr, NULL);
    return TCL_ERROR;
}

/*
 * ----------------------------------------------------------------------
 *
 * FindCommand --

    CallFrame *framePtr, **framePtrPtr = &framePtr;
    int result;

    if (namespacePtr == NULL) {
	Tcl_AppendResult(interp,
		"cannot process definitions; support namespace deleted",
		NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "MONKEY_BUSINESS", NULL);
	return TCL_ERROR;
    }

    /* framePtrPtr is needed to satisfy GCC 3.3's strict aliasing rules */

    result = TclPushStackFrame(interp, (Tcl_CallFrame **) framePtrPtr,
	    namespacePtr, FRAME_IS_OO_DEFINE);

    Interp *iPtr = (Interp *) interp;

    if ((iPtr->varFramePtr == NULL)
	    || (iPtr->varFramePtr->isProcCallFrame != FRAME_IS_OO_DEFINE)) {
	Tcl_AppendResult(interp, "this command may only be called from within"
		" the context of an ::oo::define or ::oo::objdefine command",
		NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "MONKEY_BUSINESS", NULL);
	return NULL;
    }
    return (Tcl_Object) iPtr->varFramePtr->clientData;
}

/*
 * ----------------------------------------------------------------------

    oPtr = (Object *) Tcl_GetObjectFromObj(interp, className);
    iPtr->varFramePtr = savedFramePtr;
    if (oPtr == NULL) {
	return NULL;
    }
    if (oPtr->classPtr == NULL) {
	Tcl_AppendResult(interp, errMsg, NULL);
	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "CLASS",
		TclGetString(className), NULL);
	return NULL;
    }
    return oPtr->classPtr;
}

/*
 * ----------------------------------------------------------------------

    oPtr = (Object *) Tcl_GetObjectFromObj(interp, objv[1]);
    if (oPtr == NULL) {
	return TCL_ERROR;
    }
    if (oPtr->classPtr == NULL) {
	Tcl_AppendResult(interp, TclGetString(objv[1]),
		" does not refer to a class", NULL);
	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "CLASS",
		TclGetString(objv[1]), NULL);
	return TCL_ERROR;
    }

    /*
     * Make the oo::define namespace the current namespace and evaluate the
     * command(s).
     */

    oPtr = (Object *) TclOOGetDefineCmdContext(interp);
    if (oPtr == NULL) {
	return TCL_ERROR;
    }
    if (oPtr->flags & ROOT_OBJECT) {
	Tcl_AppendResult(interp,
		"may not modify the class of the root object class", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "MONKEY_BUSINESS", NULL);
	return TCL_ERROR;
    }
    if (oPtr->flags & ROOT_CLASS) {
	Tcl_AppendResult(interp,
		"may not modify the class of the class of classes", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "MONKEY_BUSINESS", NULL);
	return TCL_ERROR;
    }

    /*
     * Parse the argument to get the class to set the object's class to.
     */

     * produce an error if any attempt is made to swap from one to the other.
     */

    if ((oPtr->classPtr==NULL) == TclOOIsReachable(fPtr->classCls, clsPtr)) {
	Tcl_AppendResult(interp, "may not change a ",
		(oPtr->classPtr==NULL ? "non-" : ""), "class object into a ",
		(oPtr->classPtr==NULL ? "" : "non-"), "class object", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "TRANSMUTATION", NULL);
	return TCL_ERROR;
    }

    /*
     * Set the object's class.
     */

    oPtr = (Object *) TclOOGetDefineCmdContext(interp);
    if (oPtr == NULL) {
	return TCL_ERROR;
    }
    if (!isInstanceDeleteMethod && !oPtr->classPtr) {
	Tcl_AppendResult(interp, "attempt to misuse API", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "MONKEY_BUSINESS", NULL);
	return TCL_ERROR;
    }

    for (i=1 ; i<objc ; i++) {
	/*
	 * Delete the method structure from the appropriate hash table.
	 */

    oPtr = (Object *) TclOOGetDefineCmdContext(interp);
    if (oPtr == NULL) {
	return TCL_ERROR;
    }
    clsPtr = oPtr->classPtr;
    if (!isInstanceExport && !clsPtr) {
	Tcl_AppendResult(interp, "attempt to misuse API", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "MONKEY_BUSINESS", NULL);
	return TCL_ERROR;
    }

    for (i=1 ; i<objc ; i++) {
	/*
	 * Exporting is done by adding the PUBLIC_METHOD flag to the method
	 * record. If there is no such method in this object or class (i.e.

    Object *oPtr = (Object *) TclOOGetDefineCmdContext(interp);

    if (oPtr == NULL) {
	return TCL_ERROR;
    }
    if (!isInstanceFilter && !oPtr->classPtr) {
	Tcl_AppendResult(interp, "attempt to misuse API", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "MONKEY_BUSINESS", NULL);
	return TCL_ERROR;
    }

    if (!isInstanceFilter) {
	TclOOClassSetFilters(interp, oPtr->classPtr, objc-1, objv+1);
    } else {
	TclOOObjectSetFilters(oPtr, objc-1, objv+1);

    oPtr = (Object *) TclOOGetDefineCmdContext(interp);
    if (oPtr == NULL) {
	return TCL_ERROR;
    }
    if (!isInstanceForward && !oPtr->classPtr) {
	Tcl_AppendResult(interp, "attempt to misuse API", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "MONKEY_BUSINESS", NULL);
	return TCL_ERROR;
    }
    isPublic = Tcl_StringMatch(TclGetString(objv[1]), "[a-z]*")
	    ? PUBLIC_METHOD : 0;

    /*
     * Create the method structure.

    oPtr = (Object *) TclOOGetDefineCmdContext(interp);
    if (oPtr == NULL) {
	return TCL_ERROR;
    }
    if (!isInstanceMethod && !oPtr->classPtr) {
	Tcl_AppendResult(interp, "attempt to misuse API", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "MONKEY_BUSINESS", NULL);
	return TCL_ERROR;
    }
    isPublic = Tcl_StringMatch(TclGetString(objv[1]), "[a-z]*")
	    ? PUBLIC_METHOD : 0;

    /*
     * Create the method by using the right back-end API.

    int i;

    if (oPtr == NULL) {
	return TCL_ERROR;
    }
    if (!isInstanceMixin && !oPtr->classPtr) {
	Tcl_AppendResult(interp, "attempt to misuse API", NULL);
	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_AppendResult(interp, "may not mix a class into itself", NULL);
	    Tcl_SetErrorCode(interp, "TCL", "OO", "SELF_MIXIN", NULL);
	    goto freeAndError;
	}
	mixins[i-1] = clsPtr;
    }

    if (isInstanceMixin) {
	TclOOObjectSetMixins(oPtr, objc-1, mixins);

    oPtr = (Object *) TclOOGetDefineCmdContext(interp);
    if (oPtr == NULL) {
	return TCL_ERROR;
    }
    if (!isInstanceRenameMethod && !oPtr->classPtr) {
	Tcl_AppendResult(interp, "attempt to misuse API", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "MONKEY_BUSINESS", NULL);
	return TCL_ERROR;
    }

    /*
     * Delete the method entry from the appropriate hash table, and transfer
     * the thing it points to to its new entry. To do this, we first need to
     * get the entries from the appropriate hash tables (this can generate a

    oPtr = (Object *) TclOOGetDefineCmdContext(interp);
    if (oPtr == NULL) {
	return TCL_ERROR;
    }
    if (oPtr->classPtr == NULL) {
	Tcl_AppendResult(interp, "only classes may have superclasses defined",
		NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "OBJECT_NOT_CLASS", NULL);
	return TCL_ERROR;
    }
    if (oPtr->flags & ROOT_OBJECT) {
	Tcl_AppendResult(interp,
		"may not modify the superclass of the root object", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "MONKEY_BUSINESS", NULL);
	return TCL_ERROR;
    }

    /*
     * Allocate some working space.
     */

	if (clsPtr == NULL) {
	    goto failedAfterAlloc;
	}
	for (j=0 ; j<i ; j++) {
	    if (superclasses[j] == clsPtr) {
		Tcl_AppendResult(interp,
			"class should only be a direct superclass once",NULL);
		Tcl_SetErrorCode(interp, "TCL", "OO", "REPETITIOUS", NULL);
		goto failedAfterAlloc;
	    }
	}
	if (TclOOIsReachable(oPtr->classPtr, clsPtr)) {
	    Tcl_AppendResult(interp,
		    "attempt to form circular dependency graph", NULL);
	    Tcl_SetErrorCode(interp, "TCL", "OO", "CIRCULARITY", NULL);
	failedAfterAlloc:
	    ckfree(superclasses);
	    return TCL_ERROR;
	}
	superclasses[i] = clsPtr;
    }

    oPtr = (Object *) TclOOGetDefineCmdContext(interp);
    if (oPtr == NULL) {
	return TCL_ERROR;
    }
    clsPtr = oPtr->classPtr;
    if (!isInstanceUnexport && !clsPtr) {
	Tcl_AppendResult(interp, "attempt to misuse API", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "MONKEY_BUSINESS", NULL);
	return TCL_ERROR;
    }

    for (i=1 ; i<objc ; i++) {
	/*
	 * Unexporting is done by removing the PUBLIC_METHOD flag from the
	 * method record. If there is no such method in this object or class

    int i;

    if (oPtr == NULL) {
	return TCL_ERROR;
    }
    if (!isInstanceVars && !oPtr->classPtr) {
	Tcl_AppendResult(interp, "attempt to misuse API", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "MONKEY_BUSINESS", NULL);
	return TCL_ERROR;
    }

    for (i=1 ; i<objc ; i++) {
	const char *varName = Tcl_GetString(objv[i]);

	if (strstr(varName, "::") != NULL) {
	    Tcl_AppendResult(interp, "invalid declared variable name \"",
		    varName, "\": must not contain namespace separators",
		    NULL);
	    Tcl_SetErrorCode(interp, "TCL", "OO", "BAD_DECLVAR", NULL);
	    return TCL_ERROR;
	}
	if (Tcl_StringMatch(varName, "*(*)")) {
	    Tcl_AppendResult(interp, "invalid declared variable name \"",
		    varName, "\": must not refer to an array element", NULL);
	    Tcl_SetErrorCode(interp, "TCL", "OO", "BAD_DECLVAR", NULL);
	    return TCL_ERROR;
	}
    }
    for (i=1 ; i<objc ; i++) {
	Tcl_IncrRefCount(objv[i]);
    }

    }

    if (objc == 2) {
	Tcl_SetObjResult(interp,
		TclOOObjectName(interp, oPtr->selfCls->thisPtr));
	return TCL_OK;
    } else {

	Class *mixinPtr, *o2clsPtr;
	int i;

	o2clsPtr = GetClassFromObj(interp, objv[2]);
	if (o2clsPtr == NULL) {







	    return TCL_ERROR;
	}

	FOREACH(mixinPtr, oPtr->mixins) {
	    if (TclOOIsReachable(o2clsPtr, mixinPtr)) {
		Tcl_SetObjResult(interp, Tcl_NewIntObj(1));
		return TCL_OK;
	    }
	}
	Tcl_SetObjResult(interp, Tcl_NewIntObj(
		TclOOIsReachable(o2clsPtr, oPtr->selfCls)));
	return TCL_OK;
    }
}

/*
 * ----------------------------------------------------------------------
 *

	}
	o2Ptr = (Object *) Tcl_GetObjectFromObj(interp, objv[3]);
	if (o2Ptr == NULL) {
	    return TCL_ERROR;
	}
	if (o2Ptr->classPtr == NULL) {
	    Tcl_AppendResult(interp, "non-classes cannot be mixins", NULL);
	    Tcl_SetErrorCode(interp, "TCL", "OO", "NONCLASS", NULL);
	    return TCL_ERROR;
	} else {
	    Class *mixinPtr;

	    FOREACH(mixinPtr, oPtr->mixins) {
		if (mixinPtr == o2Ptr->classPtr) {
		    Tcl_SetObjResult(interp, Tcl_NewIntObj(1));

	}
	o2Ptr = (Object *) Tcl_GetObjectFromObj(interp, objv[3]);
	if (o2Ptr == NULL) {
	    return TCL_ERROR;
	}
	if (o2Ptr->classPtr == NULL) {
	    Tcl_AppendResult(interp, "non-classes cannot be types", NULL);
	    Tcl_SetErrorCode(interp, "TCL", "OO", "NONCLASS", NULL);
	    return TCL_ERROR;
	}
	if (TclOOIsReachable(o2Ptr->classPtr, oPtr->selfCls)) {
	    Tcl_SetObjResult(interp, Tcl_NewIntObj(1));
	} else {
	    Tcl_SetObjResult(interp, Tcl_NewIntObj(0));
	}

    if (clsPtr->constructorPtr == NULL) {
	return TCL_OK;
    }
    procPtr = TclOOGetProcFromMethod(clsPtr->constructorPtr);
    if (procPtr == NULL) {
	Tcl_AppendResult(interp,
		"definition not available for this kind of method", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "METHOD_TYPE", NULL);
	return TCL_ERROR;
    }

    resultObjs[0] = Tcl_NewObj();
    for (localPtr=procPtr->firstLocalPtr; localPtr!=NULL;
	    localPtr=localPtr->nextPtr) {
	if (TclIsVarArgument(localPtr)) {

    if (clsPtr->destructorPtr == NULL) {
	return TCL_OK;
    }
    procPtr = TclOOGetProcFromMethod(clsPtr->destructorPtr);
    if (procPtr == NULL) {
	Tcl_AppendResult(interp,
		"definition not available for this kind of method", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "METHOD_TYPE", NULL);
	return TCL_ERROR;
    }

    Tcl_SetObjResult(interp, TclOOGetMethodBody(clsPtr->destructorPtr));
    return TCL_OK;
}


    if (Tcl_ListObjLength(interp, prefixObj, &prefixLen) != TCL_OK) {
	return NULL;
    }
    if (prefixLen < 1) {
	Tcl_AppendResult(interp, "method forward prefix must be non-empty",
		NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "BAD_FORWARD", NULL);
	return NULL;
    }

    fmPtr = ckalloc(sizeof(ForwardMethod));
    fmPtr->prefixObj = prefixObj;
    Tcl_ListObjIndex(interp, prefixObj, 0, &cmdObj);
    fmPtr->fullyQualified = (strncmp(TclGetString(cmdObj), "::", 2) == 0);

    if (Tcl_ListObjLength(interp, prefixObj, &prefixLen) != TCL_OK) {
	return NULL;
    }
    if (prefixLen < 1) {
	Tcl_AppendResult(interp, "method forward prefix must be non-empty",
		NULL);
	Tcl_SetErrorCode(interp, "TCL", "OO", "BAD_FORWARD", NULL);
	return NULL;
    }

    fmPtr = ckalloc(sizeof(ForwardMethod));
    fmPtr->prefixObj = prefixObj;
    Tcl_ListObjIndex(interp, prefixObj, 0, &cmdObj);
    fmPtr->fullyQualified = (strncmp(TclGetString(cmdObj), "::", 2) == 0);