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-rw-r--r--generic/tclVar.c79
1 files changed, 41 insertions, 38 deletions
diff --git a/generic/tclVar.c b/generic/tclVar.c
index 4c22bd2..62337bf 100644
--- a/generic/tclVar.c
+++ b/generic/tclVar.c
@@ -15,7 +15,7 @@
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclVar.c,v 1.125 2006/10/23 21:36:55 msofer Exp $
+ * RCS: @(#) $Id: tclVar.c,v 1.126 2006/10/27 13:20:33 dkf Exp $
*/
#include "tclInt.h"
@@ -37,6 +37,13 @@ static CONST char *badNamespace = "parent namespace doesn't exist";
static CONST char *missingName = "missing variable name";
static CONST char *isArrayElement =
"name refers to an element in an array";
+
+/*
+ * A test to see if we are in a call frame that has local variables. This is
+ * true if we are inside a procedure body.
+ */
+
+#define HasLocalVars(framePtr) ((framePtr)->isProcCallFrame & FRAME_IS_PROC)
/*
* Forward references to functions defined later in this file:
@@ -382,8 +389,8 @@ TclObjLookupVar(
}
return NULL;
}
- part2 = (char *) part1Ptr->internalRep.twoPtrValue.ptr2;
- part1Ptr = (Tcl_Obj *) part1Ptr->internalRep.twoPtrValue.ptr1;
+ part2 = part1Ptr->internalRep.twoPtrValue.ptr2;
+ part1Ptr = part1Ptr->internalRep.twoPtrValue.ptr1;
typePtr = part1Ptr->typePtr;
}
parsed = 1;
@@ -398,7 +405,7 @@ TclObjLookupVar(
if (typePtr == &localVarNameType) {
int localIndex = (int) part1Ptr->internalRep.longValue;
- if ((varFramePtr->isProcCallFrame & FRAME_IS_PROC)
+ if (HasLocalVars(varFramePtr)
&& !(flags & (TCL_GLOBAL_ONLY | TCL_NAMESPACE_ONLY))
&& (localIndex < varFramePtr->numCompiledLocals)) {
/*
@@ -414,25 +421,22 @@ TclObjLookupVar(
#if ENABLE_NS_VARNAME_CACHING
} else if (typePtr == &tclNsVarNameType) {
int useGlobal, useReference;
- Namespace *cachedNsPtr = (Namespace *)
- part1Ptr->internalRep.twoPtrValue.ptr1;
- varPtr = (Var *) part1Ptr->internalRep.twoPtrValue.ptr2;
+ Namespace *cachedNsPtr = part1Ptr->internalRep.twoPtrValue.ptr1;
+ varPtr = part1Ptr->internalRep.twoPtrValue.ptr2;
useGlobal = (cachedNsPtr == iPtr->globalNsPtr) && (
(flags & TCL_GLOBAL_ONLY) ||
- (*part1==':' && *(part1+1)==':') ||
- (!(varFramePtr->isProcCallFrame & FRAME_IS_PROC)
- && (nsPtr == iPtr->globalNsPtr)));
+ (part1[0]==':' && part1[1]==':') ||
+ (!HasLocalVars(varFramePtr) && (nsPtr==iPtr->globalNsPtr)));
useReference = useGlobal || ((cachedNsPtr == nsPtr) && (
(flags & TCL_NAMESPACE_ONLY) ||
- (!(varFramePtr->isProcCallFrame & FRAME_IS_PROC) &&
- !(flags & TCL_GLOBAL_ONLY) &&
+ (!HasLocalVars(varFramePtr) && !(flags & TCL_GLOBAL_ONLY) &&
/*
* Careful: an undefined ns variable could be hiding a valid
* global reference.
*/
- !TclIsVarUndefined(varPtr))));
+ !TclIsVarUndefined(varPtr))));
if (useReference && (varPtr->hPtr != NULL)) {
/*
@@ -505,7 +509,7 @@ TclObjLookupVar(
TclNewStringObj(part1Ptr, part1, len1);
Tcl_IncrRefCount(part1Ptr);
- objPtr->internalRep.twoPtrValue.ptr1 = (void *) part1Ptr;
+ objPtr->internalRep.twoPtrValue.ptr1 = part1Ptr;
objPtr->internalRep.twoPtrValue.ptr2 = (void *) part2;
typePtr = part1Ptr->typePtr;
@@ -552,11 +556,11 @@ TclObjLookupVar(
Namespace *nsPtr;
- nsPtr = ((index == -1)? iPtr->globalNsPtr : varFramePtr->nsPtr);
+ nsPtr = ((index == -1) ? iPtr->globalNsPtr : varFramePtr->nsPtr);
varPtr->refCount++;
part1Ptr->typePtr = &tclNsVarNameType;
- part1Ptr->internalRep.twoPtrValue.ptr1 = (void *) nsPtr;
- part1Ptr->internalRep.twoPtrValue.ptr2 = (void *) varPtr;
+ part1Ptr->internalRep.twoPtrValue.ptr1 = nsPtr;
+ part1Ptr->internalRep.twoPtrValue.ptr2 = varPtr;
#endif
} else {
/*
@@ -741,7 +745,7 @@ TclLookupSimpleVar(
*/
if (((flags & (TCL_GLOBAL_ONLY | TCL_NAMESPACE_ONLY)) != 0)
- || !(varFramePtr->isProcCallFrame & FRAME_IS_PROC)
+ || !HasLocalVars(varFramePtr)
|| (strstr(varName, "::") != NULL)) {
CONST char *tail;
int lookGlobal;
@@ -3239,7 +3243,7 @@ ObjMakeUpvar(
if (((otherP2 ? arrayPtr->nsPtr : otherPtr->nsPtr) == NULL)
&& ((myFlags & (TCL_GLOBAL_ONLY | TCL_NAMESPACE_ONLY))
|| (varFramePtr == NULL)
- || !(varFramePtr->isProcCallFrame & FRAME_IS_PROC)
+ || !HasLocalVars(varFramePtr)
|| (strstr(myName, "::") != NULL))) {
Tcl_AppendResult((Tcl_Interp *) iPtr, "bad variable name \"",
myName, "\": upvar won't create namespace variable that ",
@@ -3290,7 +3294,7 @@ TclPtrMakeUpvar(
CONST char *p;
if (index >= 0) {
- if (!(varFramePtr->isProcCallFrame & FRAME_IS_PROC)) {
+ if (!HasLocalVars(varFramePtr)) {
Tcl_Panic("ObjMakeUpvar called with an index outside from a proc");
}
varPtr = &(varFramePtr->compiledLocals[index]);
@@ -3553,7 +3557,7 @@ Tcl_GlobalObjCmd(
* If we are not executing inside a Tcl procedure, just return.
*/
- if (!(iPtr->varFramePtr->isProcCallFrame & FRAME_IS_PROC)) {
+ if (!HasLocalVars(iPtr->varFramePtr)) {
return TCL_OK;
}
@@ -3704,7 +3708,7 @@ Tcl_VariableObjCmd(
* linked to the new namespace variable "varName".
*/
- if (iPtr->varFramePtr->isProcCallFrame & FRAME_IS_PROC) {
+ if (HasLocalVars(iPtr->varFramePtr)) {
/*
* varName might have a scope qualifier, but the name for the
* local "link" variable must be the simple name at the tail.
@@ -3956,7 +3960,8 @@ ParseSearchId(
}
/*
- * Cast is safe, since always came from an int in the first place.
+ * Cast is safe, since always came from an int in the first place. Do NOT
+ * optimize this address arithmetic!
*/
id = (int)(((char*)handleObj->internalRep.twoPtrValue.ptr1) -
@@ -4578,7 +4583,7 @@ static void
FreeNsVarName(
Tcl_Obj *objPtr)
{
- register Var *varPtr = (Var *) objPtr->internalRep.twoPtrValue.ptr2;
+ register Var *varPtr = objPtr->internalRep.twoPtrValue.ptr2;
varPtr->refCount--;
if (TclIsVarUndefined(varPtr) && (varPtr->refCount == 0)) {
@@ -4591,11 +4596,11 @@ DupNsVarName(
Tcl_Obj *srcPtr,
Tcl_Obj *dupPtr)
{
- Namespace *nsPtr = (Namespace *) srcPtr->internalRep.twoPtrValue.ptr1;
- register Var *varPtr = (Var *) srcPtr->internalRep.twoPtrValue.ptr2;
+ Namespace *nsPtr = srcPtr->internalRep.twoPtrValue.ptr1;
+ register Var *varPtr = srcPtr->internalRep.twoPtrValue.ptr2;
- dupPtr->internalRep.twoPtrValue.ptr1 = (void *) nsPtr;
- dupPtr->internalRep.twoPtrValue.ptr2 = (void *) varPtr;
+ dupPtr->internalRep.twoPtrValue.ptr1 = nsPtr;
+ dupPtr->internalRep.twoPtrValue.ptr2 = varPtr;
varPtr->refCount++;
dupPtr->typePtr = &tclNsVarNameType;
}
@@ -4614,9 +4619,8 @@ static void
FreeParsedVarName(
Tcl_Obj *objPtr)
{
- register Tcl_Obj *arrayPtr = (Tcl_Obj *)
- objPtr->internalRep.twoPtrValue.ptr1;
- register char *elem = (char *) objPtr->internalRep.twoPtrValue.ptr2;
+ register Tcl_Obj *arrayPtr = objPtr->internalRep.twoPtrValue.ptr1;
+ register char *elem = objPtr->internalRep.twoPtrValue.ptr2;
if (arrayPtr != NULL) {
TclDecrRefCount(arrayPtr);
@@ -4629,9 +4633,8 @@ DupParsedVarName(
Tcl_Obj *srcPtr,
Tcl_Obj *dupPtr)
{
- register Tcl_Obj *arrayPtr = (Tcl_Obj *)
- srcPtr->internalRep.twoPtrValue.ptr1;
- register char *elem = (char *) srcPtr->internalRep.twoPtrValue.ptr2;
+ register Tcl_Obj *arrayPtr = srcPtr->internalRep.twoPtrValue.ptr1;
+ register char *elem = srcPtr->internalRep.twoPtrValue.ptr2;
char *elemCopy;
unsigned int elemLen;
@@ -4644,8 +4647,8 @@ DupParsedVarName(
elem = elemCopy;
}
- dupPtr->internalRep.twoPtrValue.ptr1 = (void *) arrayPtr;
- dupPtr->internalRep.twoPtrValue.ptr2 = (void *) elem;
+ dupPtr->internalRep.twoPtrValue.ptr1 = arrayPtr;
+ dupPtr->internalRep.twoPtrValue.ptr2 = elem;
dupPtr->typePtr = &tclParsedVarNameType;
}
@@ -4653,8 +4656,8 @@ static void
UpdateParsedVarName(
Tcl_Obj *objPtr)
{
- Tcl_Obj *arrayPtr = (Tcl_Obj *) objPtr->internalRep.twoPtrValue.ptr1;
- char *part2 = (char *) objPtr->internalRep.twoPtrValue.ptr2;
+ Tcl_Obj *arrayPtr = objPtr->internalRep.twoPtrValue.ptr1;
+ char *part2 = objPtr->internalRep.twoPtrValue.ptr2;
char *part1, *p;
int len1, len2, totalLen;
generated by cgit v0.12 at 2024-11-19 21:40:24 (GMT)