diff options
Diffstat (limited to 'generic/tclIndexObj.c')
| -rw-r--r-- | generic/tclIndexObj.c | 51 |
1 files changed, 26 insertions, 25 deletions
diff --git a/generic/tclIndexObj.c b/generic/tclIndexObj.c index 731d759..ce8b9fb 100644 --- a/generic/tclIndexObj.c +++ b/generic/tclIndexObj.c @@ -53,7 +53,7 @@ static const Tcl_ObjType indexType = { /* * The definition of the internal representation of the "index" object; The - * internalRep.otherValuePtr field of an object of "index" type will be a + * internalRep.twoPtrValue.ptr1 field of an object of "index" type will be a * pointer to one of these structures. * * Keep this structure declaration in sync with tclTestObj.c @@ -69,12 +69,12 @@ typedef struct { * The following macros greatly simplify moving through a table... */ -#define STRING_AT(table, offset, index) \ - (*((const char *const *)(((char *)(table)) + ((offset) * (index))))) +#define STRING_AT(table, offset) \ + (*((const char *const *)(((char *)(table)) + (offset)))) #define NEXT_ENTRY(table, offset) \ - (&(STRING_AT(table, offset, 1))) + (&(STRING_AT(table, offset))) #define EXPAND_OF(indexRep) \ - STRING_AT((indexRep)->tablePtr, (indexRep)->offset, (indexRep)->index) + STRING_AT((indexRep)->tablePtr, (indexRep)->offset*(indexRep)->index) /* *---------------------------------------------------------------------- @@ -101,6 +101,7 @@ typedef struct { *---------------------------------------------------------------------- */ +#undef Tcl_GetIndexFromObj int Tcl_GetIndexFromObj( Tcl_Interp *interp, /* Used for error reporting if not NULL. */ @@ -121,7 +122,7 @@ Tcl_GetIndexFromObj( */ if (objPtr->typePtr == &indexType) { - IndexRep *indexRep = objPtr->internalRep.otherValuePtr; + IndexRep *indexRep = objPtr->internalRep.twoPtrValue.ptr1; /* * Here's hoping we don't get hit by unfortunate packing constraints @@ -238,7 +239,7 @@ GetIndexFromObjList( * a proper match, then TCL_ERROR is returned and an error message is * left in interp's result (unless interp is NULL). The msg argument is * used in the error message; for example, if msg has the value "option" - * then the error message will say something flag 'bad option "foo": must + * then the error message will say something like 'bad option "foo": must * be ...' * * Side effects: @@ -270,12 +271,16 @@ Tcl_GetIndexFromObjStruct( Tcl_Obj *resultPtr; IndexRep *indexRep; + /* Protect against invalid values, like -1 or 0. */ + if (offset < (int)sizeof(char *)) { + offset = (int)sizeof(char *); + } /* * See if there is a valid cached result from a previous lookup. */ if (objPtr->typePtr == &indexType) { - indexRep = objPtr->internalRep.otherValuePtr; + indexRep = objPtr->internalRep.twoPtrValue.ptr1; if (indexRep->tablePtr==tablePtr && indexRep->offset==offset) { *indexPtr = indexRep->index; return TCL_OK; @@ -302,10 +307,6 @@ Tcl_GetIndexFromObjStruct( entryPtr = NEXT_ENTRY(entryPtr, offset), idx++) { for (p1 = key, p2 = *entryPtr; *p1 == *p2; p1++, p2++) { if (*p1 == '\0') { - if (p1 == key) { - /* empty keys never match */ - continue; - } index = idx; goto done; } @@ -340,11 +341,11 @@ Tcl_GetIndexFromObjStruct( */ if (objPtr->typePtr == &indexType) { - indexRep = objPtr->internalRep.otherValuePtr; + indexRep = objPtr->internalRep.twoPtrValue.ptr1; } else { TclFreeIntRep(objPtr); indexRep = ckalloc(sizeof(IndexRep)); - objPtr->internalRep.otherValuePtr = indexRep; + objPtr->internalRep.twoPtrValue.ptr1 = indexRep; objPtr->typePtr = &indexType; } indexRep->tablePtr = (void *) tablePtr; @@ -447,7 +448,7 @@ static void UpdateStringOfIndex( Tcl_Obj *objPtr) { - IndexRep *indexRep = objPtr->internalRep.otherValuePtr; + IndexRep *indexRep = objPtr->internalRep.twoPtrValue.ptr1; register char *buf; register unsigned len; register const char *indexStr = EXPAND_OF(indexRep); @@ -482,11 +483,11 @@ DupIndex( Tcl_Obj *srcPtr, Tcl_Obj *dupPtr) { - IndexRep *srcIndexRep = srcPtr->internalRep.otherValuePtr; + IndexRep *srcIndexRep = srcPtr->internalRep.twoPtrValue.ptr1; IndexRep *dupIndexRep = ckalloc(sizeof(IndexRep)); memcpy(dupIndexRep, srcIndexRep, sizeof(IndexRep)); - dupPtr->internalRep.otherValuePtr = dupIndexRep; + dupPtr->internalRep.twoPtrValue.ptr1 = dupIndexRep; dupPtr->typePtr = &indexType; } @@ -511,7 +512,7 @@ static void FreeIndex( Tcl_Obj *objPtr) { - ckfree(objPtr->internalRep.otherValuePtr); + ckfree(objPtr->internalRep.twoPtrValue.ptr1); objPtr->typePtr = NULL; } @@ -537,9 +538,9 @@ TclInitPrefixCmd( Tcl_Interp *interp) /* Current interpreter. */ { static const EnsembleImplMap prefixImplMap[] = { - {"all", PrefixAllObjCmd, NULL, NULL, NULL, 0}, - {"longest", PrefixLongestObjCmd, NULL, NULL, NULL, 0}, - {"match", PrefixMatchObjCmd, NULL, NULL, NULL, 0}, + {"all", PrefixAllObjCmd, TclCompileBasic2ArgCmd, NULL, NULL, 0}, + {"longest", PrefixLongestObjCmd,TclCompileBasic2ArgCmd, NULL, NULL, 0}, + {"match", PrefixMatchObjCmd, TclCompileBasicMin2ArgCmd, NULL, NULL, 0}, {NULL, NULL, NULL, NULL, NULL, 0} }; Tcl_Command prefixCmd; @@ -952,13 +953,13 @@ Tcl_WrongNumArgs( if (origObjv[i]->typePtr == &indexType) { register IndexRep *indexRep = - origObjv[i]->internalRep.otherValuePtr; + origObjv[i]->internalRep.twoPtrValue.ptr1; elementStr = EXPAND_OF(indexRep); elemLen = strlen(elementStr); } else if (origObjv[i]->typePtr == &tclEnsembleCmdType) { register EnsembleCmdRep *ecrPtr = - origObjv[i]->internalRep.otherValuePtr; + origObjv[i]->internalRep.twoPtrValue.ptr1; elementStr = ecrPtr->fullSubcmdName; elemLen = strlen(elementStr); @@ -1007,12 +1008,12 @@ Tcl_WrongNumArgs( */ if (objv[i]->typePtr == &indexType) { - register IndexRep *indexRep = objv[i]->internalRep.otherValuePtr; + register IndexRep *indexRep = objv[i]->internalRep.twoPtrValue.ptr1; Tcl_AppendStringsToObj(objPtr, EXPAND_OF(indexRep), NULL); } else if (objv[i]->typePtr == &tclEnsembleCmdType) { register EnsembleCmdRep *ecrPtr = - objv[i]->internalRep.otherValuePtr; + objv[i]->internalRep.twoPtrValue.ptr1; Tcl_AppendStringsToObj(objPtr, ecrPtr->fullSubcmdName, NULL); } else { |