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-rw-r--r--generic/tclParseExpr.c79
1 files changed, 36 insertions, 43 deletions
diff --git a/generic/tclParseExpr.c b/generic/tclParseExpr.c
index 2f6589d..9560630 100644
--- a/generic/tclParseExpr.c
+++ b/generic/tclParseExpr.c
@@ -12,7 +12,7 @@
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclParseExpr.c,v 1.38 2006/08/21 17:15:21 dgp Exp $
+ * RCS: @(#) $Id: tclParseExpr.c,v 1.39 2006/08/23 21:31:55 dgp Exp $
*/
#define OLD_EXPR_PARSER 0
@@ -2104,8 +2104,9 @@ Tcl_ParseExpr(
Tcl_Parse scratch; /* Parsing scratch space */
Tcl_Obj *msg = NULL, *post = NULL;
unsigned char precedence;
- CONST char *space, *operand, *end, *mark = "_@_";
- int scanned = 0, size, limit = 25, code = TCL_OK, insertMark = 0;
+ CONST char *end, *mark = "_@_";
+ int scanned = 0, code = TCL_OK, insertMark = 0;
+ CONST int limit = 25;
static unsigned char prec[80] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@ -2141,9 +2142,9 @@ Tcl_ParseExpr(
*/
if (nodesUsed >= nodesAvailable) {
int lastOrphanIdx = lastOrphanPtr - nodes;
+ int size = nodesUsed * 2;
ExprNode *newPtr;
- size = nodesUsed * 2;
if (nodes == staticNodes) {
nodes = NULL;
}
@@ -2171,7 +2172,6 @@ Tcl_ParseExpr(
/* Skip white space between lexemes */
- space = start; /* Remember where last lexeme ended */
scanned = TclParseAllWhiteSpace(start, numBytes);
start += scanned;
numBytes -= scanned;
@@ -2184,16 +2184,14 @@ Tcl_ParseExpr(
switch (nodePtr->lexeme) {
case INVALID:
msg = Tcl_NewObj();
- TclObjPrintf(NULL, msg, "invalid character \"%.*s%s\"",
- (scanned < limit) ? scanned : limit - 3, start,
- (scanned < limit) ? "" : "...");
+ TclObjPrintf(NULL, msg,
+ "invalid character \"%.*s\"", scanned, start);
code = TCL_ERROR;
continue;
case INCOMPLETE:
msg = Tcl_NewObj();
- TclObjPrintf(NULL, msg, "incomplete operator \"%.*s%s\"",
- (scanned < limit) ? scanned : limit - 3, start,
- (scanned < limit) ? "" : "...");
+ TclObjPrintf(NULL, msg,
+ "incomplete operator \"%.*s\"", scanned, start);
code = TCL_ERROR;
continue;
case BAREWORD:
@@ -2242,9 +2240,11 @@ Tcl_ParseExpr(
case LEAF:
if ((NODE_TYPE & lastNodePtr->lexeme) == LEAF) {
+ CONST char *operand =
+ scratch.tokenPtr[lastNodePtr->token].start;
+
msg = Tcl_NewObj();
TclObjPrintf(NULL, msg, "missing operator at %s", mark);
- operand = scratch.tokenPtr[lastNodePtr->token].start;
if (operand[0] == '0') {
Tcl_Obj *copy = Tcl_NewStringObj(operand,
start + scanned - operand);
@@ -2436,41 +2436,35 @@ Tcl_ParseExpr(
if ((NODE_TYPE & lastNodePtr->lexeme) != LEAF) {
if (prec[lastNodePtr->lexeme] > precedence) {
if (lastNodePtr->lexeme == OPEN_PAREN) {
- lastOrphanPtr = lastNodePtr;
msg = Tcl_NewStringObj("unbalanced open paren", -1);
- code = TCL_ERROR;
- continue;
- }
- if (lastNodePtr->lexeme == COMMA) {
+ } else if (lastNodePtr->lexeme == COMMA) {
msg = Tcl_NewObj();
TclObjPrintf(NULL, msg,
"missing function argument at %s", mark);
scanned = 0;
insertMark = 1;
- code = TCL_ERROR;
- continue;
- }
- if (lastNodePtr->lexeme == START) {
+ } else if (lastNodePtr->lexeme == START) {
msg = Tcl_NewStringObj("empty expression", -1);
- code = TCL_ERROR;
- continue;
}
- msg = Tcl_NewObj();
- operand = scratch.tokenPtr[lastNodePtr->token].start;
- size = space - operand;
- TclObjPrintf(NULL, msg, "missing operand at %s", mark);
- scanned = 0;
- insertMark = 1;
} else {
if (nodePtr->lexeme == CLOSE_PAREN) {
msg = Tcl_NewStringObj("unbalanced close paren", -1);
- } else {
+ } else if ((nodePtr->lexeme == COMMA)
+ && (lastNodePtr->lexeme == OPEN_PAREN)
+ && (lastNodePtr[-1].lexeme == FUNCTION)) {
msg = Tcl_NewObj();
- TclObjPrintf(NULL, msg, "missing operand at %s", mark);
+ TclObjPrintf(NULL, msg,
+ "missing function argument at %s", mark);
scanned = 0;
insertMark = 1;
}
}
+ if (msg == NULL) {
+ msg = Tcl_NewObj();
+ TclObjPrintf(NULL, msg, "missing operand at %s", mark);
+ scanned = 0;
+ insertMark = 1;
+ }
code = TCL_ERROR;
continue;
}
@@ -2524,15 +2518,6 @@ Tcl_ParseExpr(
code = TCL_ERROR;
break;
}
- if ((lastOrphanPtr->lexeme == COMMA)
- && ((otherPtr->lexeme != OPEN_PAREN)
- || (otherPtr[-1].lexeme != FUNCTION)) ) {
- msg = Tcl_NewStringObj(
- "unexpected \",\" outside function argument list",
- -1);
- code = TCL_ERROR;
- break;
- }
/* Link orphan as right operand of otherPtr */
otherPtr->right = lastOrphanPtr - nodes;
@@ -2564,6 +2549,14 @@ Tcl_ParseExpr(
break;
}
+ if ((nodePtr->lexeme == COMMA) && ((otherPtr->lexeme != OPEN_PAREN)
+ || (otherPtr[-1].lexeme != FUNCTION))) {
+ msg = Tcl_NewStringObj(
+ "unexpected \",\" outside function argument list", -1);
+ code = TCL_ERROR;
+ continue;
+ }
+
if (lastOrphanPtr->lexeme == COLON) {
msg = Tcl_NewStringObj(
"unexpected operator \":\" without preceding \"?\"",
@@ -2619,16 +2612,16 @@ Tcl_ParseExpr(
((start - limit) < scratch.string) ? "" : "...",
((start - limit) < scratch.string)
? (start - scratch.string)
- : (start - Tcl_UtfPrev(start-limit, scratch.string)),
+ : (start - Tcl_UtfPrev(start+1-limit+3, scratch.string)),
((start - limit) < scratch.string)
? scratch.string
- : Tcl_UtfPrev(start-limit, scratch.string),
+ : Tcl_UtfPrev(start+1-limit+3, scratch.string),
(scanned < limit) ? scanned : limit - 3, start,
(scanned < limit) ? "" : "...",
insertMark ? mark : "",
(start + scanned + limit > scratch.end)
? scratch.end - (start + scanned)
- : Tcl_UtfPrev(start+scanned+limit, start+scanned)
+ : Tcl_UtfPrev(start+scanned+limit-3+1, start+scanned)
- (start + scanned), start + scanned,
(start + scanned + limit > scratch.end) ? "" : "..."
);
generated by cgit v0.12 at 2024-11-18 22:09:54 (GMT)