diff options
| -rw-r--r-- | generic/tclVar.c | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/generic/tclVar.c b/generic/tclVar.c index 97aa7ab..e897790 100644 --- a/generic/tclVar.c +++ b/generic/tclVar.c @@ -235,25 +235,6 @@ static const Tcl_ObjType localVarNameType = { FreeLocalVarName, DupLocalVarName, PanicOnUpdateVarName, PanicOnSetVarName }; -/* - * Caching of namespace variables disabled: no simple way was found to avoid - * interfering with the resolver's idea of variable existence. A cached - * varName may keep a variable's name in the namespace's hash table, which is - * the resolver's criterion for existence (see test namespace-17.10). - */ - -#define ENABLE_NS_VARNAME_CACHING 0 - -#if ENABLE_NS_VARNAME_CACHING -static Tcl_FreeInternalRepProc FreeNsVarName; -static Tcl_DupInternalRepProc DupNsVarName; - -static const Tcl_ObjType tclNsVarNameType = { - "namespaceVarName", - FreeNsVarName, DupNsVarName, PanicOnUpdateVarName, PanicOnSetVarName -}; -#endif - static const Tcl_ObjType tclParsedVarNameType = { "parsedVarName", FreeParsedVarName, DupParsedVarName, UpdateParsedVarName, PanicOnSetVarName @@ -554,27 +535,10 @@ TclObjLookupVarEx( const Tcl_ObjType *typePtr = part1Ptr->typePtr; const char *errMsg = NULL; CallFrame *varFramePtr = iPtr->varFramePtr; -#if ENABLE_NS_VARNAME_CACHING - Namespace *nsPtr; -#endif const char *part2 = part2Ptr? TclGetString(part2Ptr):NULL; char *newPart2 = NULL; - *arrayPtrPtr = NULL; -#if ENABLE_NS_VARNAME_CACHING - if (varFramePtr) { - nsPtr = varFramePtr->nsPtr; - } else { - /* - * Some variables in the global ns have to be initialized before the - * root call frame is in place. - */ - - nsPtr = NULL; - } -#endif - if (typePtr == &localVarNameType) { int localIndex; @@ -597,44 +561,6 @@ TclObjLookupVarEx( } } goto doneParsing; -#if ENABLE_NS_VARNAME_CACHING - } else if (typePtr == &tclNsVarNameType) { - int useGlobal, useReference; - Namespace *cachedNsPtr = part1Ptr->internalRep.twoPtrValue.ptr1; - varPtr = part1Ptr->internalRep.twoPtrValue.ptr2; - - useGlobal = (cachedNsPtr == iPtr->globalNsPtr) && ( - (flags & TCL_GLOBAL_ONLY) || - (part1[0]==':' && part1[1]==':') || - (!HasLocalVars(varFramePtr) && (nsPtr==iPtr->globalNsPtr))); - - useReference = useGlobal || ((cachedNsPtr == nsPtr) && ( - (flags & TCL_NAMESPACE_ONLY) || - (!HasLocalVars(varFramePtr) && !(flags & TCL_GLOBAL_ONLY) && - /* - * Careful: an undefined ns variable could be hiding a valid - * global reference. - */ - !TclIsVarUndefined(varPtr)))); - - if (useReference && !TclIsVarDeadHash(varPtr)) { - /* - * A straight global or namespace reference, use it. It isn't so - * simple to deal with 'implicit' namespace references, i.e., - * those where the reference could be to either a namespace or a - * global variable. Those we lookup again. - * - * If TclIsVarDeadHash(varPtr), this might be a reference to a - * variable in a deleted namespace, kept alive by e.g. part1Ptr. - * We could conceivably be so unlucky that a new namespace was - * created at the same address as the deleted one, so to be safe - * we test for a valid hPtr. - */ - - goto donePart1; - } - goto doneParsing; -#endif } /* @@ -782,20 +708,6 @@ TclObjLookupVarEx( part1Ptr->internalRep.twoPtrValue.ptr1 = NULL; } part1Ptr->internalRep.twoPtrValue.ptr2 = INT2PTR(index); -#if ENABLE_NS_VARNAME_CACHING - } else if (index > -3) { - /* - * A cacheable namespace or global variable. - */ - - Namespace *nsPtr; - - nsPtr = ((index == -1) ? iPtr->globalNsPtr : varFramePtr->nsPtr); - varPtr->refCount++; - part1Ptr->typePtr = &tclNsVarNameType; - part1Ptr->internalRep.twoPtrValue.ptr1 = nsPtr; - part1Ptr->internalRep.twoPtrValue.ptr2 = varPtr; -#endif } else { /* * At least mark part1Ptr as already parsed. @@ -807,18 +719,6 @@ TclObjLookupVarEx( } donePart1: -#if 0 /* ENABLE_NS_VARNAME_CACHING perhaps? */ - if (varPtr == NULL) { - if (flags & TCL_LEAVE_ERR_MSG) { - part1 = TclGetString(part1Ptr); - TclObjVarErrMsg(interp, part1Ptr, part2Ptr, msg, - "cached variable reference is NULL.", -1); - Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "VARNAME", - TclGetString(part1Ptr), NULL); - } - return NULL; - } -#endif while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } @@ -1912,17 +1812,6 @@ TclPtrSetVar( varPtr->value.objPtr = NULL; } if (flags & (TCL_APPEND_VALUE|TCL_LIST_ELEMENT)) { -#if 0 /* ENABLE_NS_VARNAME_CACHING perhaps? */ - /* - * Can't happen now! - */ - - if (TclIsVarUndefined(varPtr) && (oldValuePtr != NULL)) { - TclDecrRefCount(oldValuePtr); /* Discard old value. */ - varPtr->value.objPtr = NULL; - oldValuePtr = NULL; - } -#endif if (flags & TCL_LIST_ELEMENT) { /* Append list element. */ if (oldValuePtr == NULL) { TclNewObj(oldValuePtr); @@ -2388,18 +2277,6 @@ TclPtrUnsetVar( } } -#if ENABLE_NS_VARNAME_CACHING - /* - * Try to avoid keeping the Var struct allocated due to a tclNsVarNameType - * keeping a reference. This removes some additional exteriorisations of - * [Bug 736729], but may be a good thing independently of the bug. - */ - - if (part1Ptr->typePtr == &tclNsVarNameType) { - TclFreeIntRep(part1Ptr); - } -#endif - /* * Finally, if the variable is truly not in use then free up its Var * structure and remove it from its hash table, if any. The ref count of @@ -5698,46 +5575,6 @@ DupLocalVarName( dupPtr->typePtr = &localVarNameType; } -#if ENABLE_NS_VARNAME_CACHING -/* - * nsVarName - - * - * INTERNALREP DEFINITION: - * twoPtrValue.ptr1: pointer to the namespace containing the reference. - * twoPtrValue.ptr2: pointer to the corresponding Var - */ - -static void -FreeNsVarName( - Tcl_Obj *objPtr) -{ - register Var *varPtr = objPtr->internalRep.twoPtrValue.ptr2; - - if (TclIsVarInHash(varPtr) && TclIsVarUndefined(varPtr)) { - if ((varPtr->refCount-- <= 1)) { - CleanupVar(varPtr, NULL); - } - } - objPtr->typePtr = NULL; -} - -static void -DupNsVarName( - Tcl_Obj *srcPtr, - Tcl_Obj *dupPtr) -{ - Namespace *nsPtr = srcPtr->internalRep.twoPtrValue.ptr1; - register Var *varPtr = srcPtr->internalRep.twoPtrValue.ptr2; - - dupPtr->internalRep.twoPtrValue.ptr1 = nsPtr; - dupPtr->internalRep.twoPtrValue.ptr2 = varPtr; - if (TclIsVarInHash(varPtr)) { - varPtr->refCount++; - } - dupPtr->typePtr = &tclNsVarNameType; -} -#endif - /* * parsedVarName - * |