From 883ca7abcd437926de756a838f60e7574f111881 Mon Sep 17 00:00:00 2001 From: dgp Date: Tue, 19 Jul 2016 19:31:28 +0000 Subject: [0363f0146c] Fix [array startsearch] id handling to support var name variations --- generic/tclInt.h | 1 - generic/tclObj.c | 1 - generic/tclVar.c | 171 ++++++++++--------------------------------------------- 3 files changed, 31 insertions(+), 142 deletions(-) diff --git a/generic/tclInt.h b/generic/tclInt.h index 4ecac7d..b39c8ea 100644 --- a/generic/tclInt.h +++ b/generic/tclInt.h @@ -2707,7 +2707,6 @@ MODULE_SCOPE const Tcl_ObjType tclListType; MODULE_SCOPE const Tcl_ObjType tclDictType; MODULE_SCOPE const Tcl_ObjType tclProcBodyType; MODULE_SCOPE const Tcl_ObjType tclStringType; -MODULE_SCOPE const Tcl_ObjType tclArraySearchType; MODULE_SCOPE const Tcl_ObjType tclEnsembleCmdType; #ifndef TCL_WIDE_INT_IS_LONG MODULE_SCOPE const Tcl_ObjType tclWideIntType; diff --git a/generic/tclObj.c b/generic/tclObj.c index b145d7e..df17f13 100644 --- a/generic/tclObj.c +++ b/generic/tclObj.c @@ -402,7 +402,6 @@ TclInitObjSubsystem(void) Tcl_RegisterObjType(&tclListType); Tcl_RegisterObjType(&tclDictType); Tcl_RegisterObjType(&tclByteCodeType); - Tcl_RegisterObjType(&tclArraySearchType); Tcl_RegisterObjType(&tclCmdNameType); Tcl_RegisterObjType(&tclRegexpType); Tcl_RegisterObjType(&tclProcBodyType); diff --git a/generic/tclVar.c b/generic/tclVar.c index 091baf8..a4f1ec5 100644 --- a/generic/tclVar.c +++ b/generic/tclVar.c @@ -149,6 +149,7 @@ static const char *isArrayElement = */ typedef struct ArraySearch { + Tcl_Obj *name; /* Name of this search */ int id; /* Integer id used to distinguish among * multiple concurrent searches for the same * array. */ @@ -188,8 +189,6 @@ static ArraySearch * ParseSearchId(Tcl_Interp *interp, const Var *varPtr, static void UnsetVarStruct(Var *varPtr, Var *arrayPtr, Interp *iPtr, Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr, int flags, int index); -static int SetArraySearchObj(Tcl_Interp *interp, - Tcl_Obj *objPtr); /* * Functions defined in this file that may be exported in the future for use @@ -235,22 +234,6 @@ static const Tcl_ObjType tclParsedVarNameType = { FreeParsedVarName, DupParsedVarName, NULL, NULL }; -/* - * Type of Tcl_Objs used to speed up array searches. - * - * INTERNALREP DEFINITION: - * twoPtrValue.ptr1: searchIdNumber (cast to pointer) - * twoPtrValue.ptr2: variableNameStartInString (cast to pointer) - * - * Note that the value stored in ptr2 is the offset into the string of the - * start of the variable name and not the address of the variable name itself, - * as this can be safely copied. - */ - -const Tcl_ObjType tclArraySearchType = { - "array search", - NULL, NULL, NULL, SetArraySearchObj -}; Var * TclVarHashCreateVar( @@ -2966,8 +2949,9 @@ ArrayStartSearchCmd( searchPtr->nextEntry = VarHashFirstEntry(varPtr->value.tablePtr, &searchPtr->search); Tcl_SetHashValue(hPtr, searchPtr); - Tcl_SetObjResult(interp, - Tcl_ObjPrintf("s-%d-%s", searchPtr->id, varName)); + searchPtr->name = Tcl_ObjPrintf("s-%d-%s", searchPtr->id, varName); + Tcl_IncrRefCount(searchPtr->name); + Tcl_SetObjResult(interp, searchPtr->name); return TCL_OK; } @@ -3291,6 +3275,7 @@ ArrayDoneSearchCmd( } } } + Tcl_DecrRefCount(searchPtr->name); ckfree(searchPtr); return TCL_OK; } @@ -4930,75 +4915,6 @@ Tcl_UpvarObjCmd( /* *---------------------------------------------------------------------- * - * SetArraySearchObj -- - * - * This function converts the given tcl object into one that has the - * "array search" internal type. - * - * Results: - * TCL_OK if the conversion succeeded, and TCL_ERROR if it failed (when - * an error message will be placed in the interpreter's result.) - * - * Side effects: - * Updates the internal type and representation of the object to make - * this an array-search object. See the tclArraySearchType declaration - * above for details of the internal representation. - * - *---------------------------------------------------------------------- - */ - -static int -SetArraySearchObj( - Tcl_Interp *interp, - Tcl_Obj *objPtr) -{ - const char *string; - char *end; /* Can't be const due to strtoul defn. */ - int id; - size_t offset; - - /* - * Get the string representation. Make it up-to-date if necessary. - */ - - string = TclGetString(objPtr); - - /* - * Parse the id into the three parts separated by dashes. - */ - - if ((string[0] != 's') || (string[1] != '-')) { - goto syntax; - } - id = strtoul(string+2, &end, 10); - if ((end == (string+2)) || (*end != '-')) { - goto syntax; - } - - /* - * Can't perform value check in this context, so place reference to place - * in string to use for the check in the object instead. - */ - - end++; - offset = end - string; - - TclFreeIntRep(objPtr); - objPtr->typePtr = &tclArraySearchType; - objPtr->internalRep.twoPtrValue.ptr1 = INT2PTR(id); - objPtr->internalRep.twoPtrValue.ptr2 = INT2PTR(offset); - return TCL_OK; - - syntax: - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "illegal search identifier \"%s\"", string)); - Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "ARRAYSEARCH", string, NULL); - return TCL_ERROR; -} - -/* - *---------------------------------------------------------------------- - * * ParseSearchId -- * * This function translates from a tcl object to a pointer to an active @@ -5009,10 +4925,6 @@ SetArraySearchObj( * or NULL if there isn't one. If NULL is returned, the interp's result * contains an error message. * - * Side effects: - * The tcl object might have its internal type and representation - * modified. - * *---------------------------------------------------------------------- */ @@ -5028,65 +4940,43 @@ ParseSearchId( * name. */ { Interp *iPtr = (Interp *) interp; - register const char *string; - register size_t offset; - int id; ArraySearch *searchPtr; - const char *varName = TclGetString(varNamePtr); - - /* - * Parse the id. - */ - - if ((handleObj->typePtr != &tclArraySearchType) - && (SetArraySearchObj(interp, handleObj) != TCL_OK)) { - return NULL; - } - - /* - * Extract the information out of the Tcl_Obj. - */ - - id = PTR2INT(handleObj->internalRep.twoPtrValue.ptr1); - string = TclGetString(handleObj); - offset = PTR2INT(handleObj->internalRep.twoPtrValue.ptr2); - - /* - * This test cannot be placed inside the Tcl_Obj machinery, since it is - * dependent on the variable context. - */ - - if (strcmp(string+offset, varName) != 0) { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "search identifier \"%s\" isn't for variable \"%s\"", - string, varName)); - goto badLookup; - } - - /* - * Search through the list of active searches on the interpreter to see if - * the desired one exists. - * - * Note that we cannot store the searchPtr directly in the Tcl_Obj as that - * would run into trouble when DeleteSearches() was called so we must scan - * this list every time. - */ + const char *handle = TclGetString(handleObj); + char *end; if (varPtr->flags & VAR_SEARCH_ACTIVE) { Tcl_HashEntry *hPtr = Tcl_FindHashEntry(&iPtr->varSearches, varPtr); + /* First look for same (Tcl_Obj *) */ for (searchPtr = Tcl_GetHashValue(hPtr); searchPtr != NULL; searchPtr = searchPtr->nextPtr) { - if (searchPtr->id == id) { + if (searchPtr->name == handleObj) { return searchPtr; } } + /* Fallback: do string compares. */ + for (searchPtr = Tcl_GetHashValue(hPtr); searchPtr != NULL; + searchPtr = searchPtr->nextPtr) { + if (strcmp(TclGetString(searchPtr->name), handle) == 0) { + return searchPtr; + } + } + } + if ((handle[0] != 's') || (handle[1] != '-') + || (strtoul(handle + 2, &end, 10), end == (handle + 2)) + || (*end != '-')) { + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "illegal search identifier \"%s\"", handle)); + } else if (strcmp(end + 1, TclGetString(varNamePtr)) != 0) { + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "search identifier \"%s\" isn't for variable \"%s\"", + handle, TclGetString(varNamePtr))); + } else { + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "couldn't find search \"%s\"", handle)); } - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "couldn't find search \"%s\"", string)); - badLookup: - Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "ARRAYSEARCH", string, NULL); + Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "ARRAYSEARCH", handle, NULL); return NULL; } @@ -5121,6 +5011,7 @@ DeleteSearches( for (searchPtr = Tcl_GetHashValue(sPtr); searchPtr != NULL; searchPtr = nextPtr) { nextPtr = searchPtr->nextPtr; + Tcl_DecrRefCount(searchPtr->name); ckfree(searchPtr); } arrayVarPtr->flags &= ~VAR_SEARCH_ACTIVE; -- cgit v0.12