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authorstanton <stanton>1998-06-18 18:25:39 (GMT)
committerstanton <stanton>1998-06-18 18:25:39 (GMT)
commit408878bbbe30d173d57f3120674edd2ed92e1255 (patch)
tree48d10c6b96c7ec94bb1f1d9a1332bde8b256acdf /generic/tclVar.c
parentf1072578dad2e2f6bb7dd6184d61868725552ab0 (diff)
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fixed behavior of "array set" on initialization with an emtpy list
removed memory leak
Diffstat (limited to 'generic/tclVar.c')
-rw-r--r--generic/tclVar.c90
1 files changed, 57 insertions, 33 deletions
diff --git a/generic/tclVar.c b/generic/tclVar.c
index f013e65..6725568 100644
--- a/generic/tclVar.c
+++ b/generic/tclVar.c
@@ -2799,9 +2799,18 @@ Tcl_ArrayObjCmd(dummy, interp, objc, objv)
int objc; /* Number of arguments. */
Tcl_Obj *CONST objv[]; /* Argument objects. */
{
+ /*
+ * The list of constants below should match the arrayOptions string array
+ * below.
+ */
+
+ enum {ARRAY_ANYMORE, ARRAY_DONESEARCH, ARRAY_EXISTS, ARRAY_GET,
+ ARRAY_NAMES, ARRAY_NEXTELEMENT, ARRAY_SET, ARRAY_SIZE,
+ ARRAY_STARTSEARCH};
static char *arrayOptions[] = {"anymore", "donesearch", "exists",
"get", "names", "nextelement", "set", "size", "startsearch",
(char *) NULL};
+
Var *varPtr, *arrayPtr;
Tcl_HashEntry *hPtr;
Tcl_Obj *resultPtr = Tcl_GetObjResult(interp);
@@ -2836,7 +2845,7 @@ Tcl_ArrayObjCmd(dummy, interp, objc, objv)
}
switch (index) {
- case 0: { /* anymore */
+ case ARRAY_ANYMORE: {
ArraySearch *searchPtr;
char *searchId;
@@ -2871,7 +2880,7 @@ Tcl_ArrayObjCmd(dummy, interp, objc, objv)
Tcl_SetIntObj(resultPtr, 1);
break;
}
- case 1: { /* donesearch */
+ case ARRAY_DONESEARCH: {
ArraySearch *searchPtr, *prevPtr;
char *searchId;
@@ -2902,7 +2911,7 @@ Tcl_ArrayObjCmd(dummy, interp, objc, objv)
ckfree((char *) searchPtr);
break;
}
- case 2: { /* exists */
+ case ARRAY_EXISTS: {
if (objc != 3) {
Tcl_WrongNumArgs(interp, 2, objv, "arrayName");
return TCL_ERROR;
@@ -2910,7 +2919,7 @@ Tcl_ArrayObjCmd(dummy, interp, objc, objv)
Tcl_SetIntObj(resultPtr, !notArray);
break;
}
- case 3: { /*get*/
+ case ARRAY_GET: {
Tcl_HashSearch search;
Var *varPtr2;
char *pattern = NULL;
@@ -2961,7 +2970,7 @@ Tcl_ArrayObjCmd(dummy, interp, objc, objv)
}
break;
}
- case 4: { /* names */
+ case ARRAY_NAMES: {
Tcl_HashSearch search;
Var *varPtr2;
char *pattern = NULL;
@@ -2998,7 +3007,7 @@ Tcl_ArrayObjCmd(dummy, interp, objc, objv)
}
break;
}
- case 5: { /*nextelement*/
+ case ARRAY_NEXTELEMENT: {
ArraySearch *searchPtr;
char *searchId;
Tcl_HashEntry *hPtr;
@@ -3037,7 +3046,7 @@ Tcl_ArrayObjCmd(dummy, interp, objc, objv)
Tcl_GetHashKey(varPtr->value.tablePtr, hPtr), -1);
break;
}
- case 6: { /*set*/
+ case ARRAY_SET: {
Tcl_Obj **elemPtrs;
int listLen, i, result;
@@ -3064,34 +3073,49 @@ Tcl_ArrayObjCmd(dummy, interp, objc, objv)
break;
}
}
- } else if (varPtr == NULL) {
+ return result;
+ }
+
+ /*
+ * The list is empty make sure we have an array, or create
+ * one if necessary.
+ */
+
+ if (varPtr != NULL) {
+ if (!TclIsVarUndefined(varPtr) && TclIsVarArray(varPtr)) {
+ /*
+ * Already an array, done.
+ */
+
+ return TCL_OK;
+ }
+ if (TclIsVarArrayElement(varPtr) ||
+ !TclIsVarUndefined(varPtr)) {
+ /*
+ * Either an array element, or a scalar: lose!
+ */
+
+ VarErrMsg(interp, varName, (char *)NULL, "array set",
+ needArray);
+ return TCL_ERROR;
+ }
+ } else {
/*
- * The list is empty and the array variable doesn't
- * exist yet: create the variable with an empty array
- * as the value.
+ * Create variable for new array.
*/
-
- Tcl_Obj *namePtr, *valuePtr;
-
- namePtr = Tcl_NewStringObj("tempElem", -1);
- valuePtr = Tcl_NewObj();
- if (Tcl_ObjSetVar2(interp, objv[2], namePtr, valuePtr,
- /* flags*/ 0) == NULL) {
- Tcl_DecrRefCount(namePtr);
- Tcl_DecrRefCount(valuePtr);
- return TCL_ERROR;
- }
- result = Tcl_UnsetVar2(interp, varName, "tempElem",
- TCL_LEAVE_ERR_MSG);
- if (result != TCL_OK) {
- Tcl_DecrRefCount(namePtr);
- Tcl_DecrRefCount(valuePtr);
- return result;
- }
+
+ varPtr = TclLookupVar(interp, varName, (char *) NULL, 0, 0,
+ /*createPart1*/ 1, /*createPart2*/ 0,
+ &arrayPtr);
}
- return result;
+ TclSetVarArray(varPtr);
+ TclClearVarUndefined(varPtr);
+ varPtr->value.tablePtr =
+ (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable));
+ Tcl_InitHashTable(varPtr->value.tablePtr, TCL_STRING_KEYS);
+ return TCL_OK;
}
- case 7: { /*size*/
+ case ARRAY_SIZE: {
Tcl_HashSearch search;
Var *varPtr2;
int size;
@@ -3115,7 +3139,7 @@ Tcl_ArrayObjCmd(dummy, interp, objc, objv)
Tcl_SetIntObj(resultPtr, size);
break;
}
- case 8: { /*startsearch*/
+ case ARRAY_STARTSEARCH: {
ArraySearch *searchPtr;
if (objc != 3) {
@@ -3259,7 +3283,7 @@ MakeUpvar(iPtr, framePtr, otherP1, otherP2, otherFlags, myName, myFlags)
* leaving the namespace var's reference invalid.
*/
- if (otherPtr->nsPtr == NULL) {
+ if ((otherP2 ? arrayPtr->nsPtr : otherPtr->nsPtr) == NULL) {
Tcl_AppendResult((Tcl_Interp *) iPtr, "bad variable name \"",
myName, "\": upvar won't create namespace variable that refers to procedure variable",
(char *) NULL);