summaryrefslogtreecommitdiffstats
path: root/generic
diff options
context:
space:
mode:
Diffstat (limited to 'generic')
-rw-r--r--generic/tclCompCmds.c141
1 files changed, 36 insertions, 105 deletions
diff --git a/generic/tclCompCmds.c b/generic/tclCompCmds.c
index ddd2242..f2d1bfb 100644
--- a/generic/tclCompCmds.c
+++ b/generic/tclCompCmds.c
@@ -3907,7 +3907,6 @@ TclCompileSwitchCmd(
int savedStackDepth = envPtr->currStackDepth;
int noCase; /* Has the -nocase flag been given? */
int foundMode = 0; /* Have we seen a mode flag yet? */
- int isListedArms = 0;
int i, valueIndex;
DefineLineInformation; /* TIP #280 */
int* clNext = envPtr->clNext;
@@ -4047,89 +4046,40 @@ TclCompileSwitchCmd(
*/
if (numWords == 1) {
- Tcl_DString bodyList;
- const char **argv = NULL, *tokenStartPtr, *p;
+ CONST char *bytes;
+ int maxLen, numBytes;
int bline; /* TIP #280: line of the pattern/action list,
* and start of list for when tracking the
* location. This list comes immediately after
* the value we switch on. */
- int isTokenBraced;
-
- /*
- * Test that we've got a suitable body list as a simple (i.e. braced)
- * word, and that the elements of the body are simple words too. This
- * is really rather nasty indeed.
- */
if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
return TCL_ERROR;
}
+ bytes = tokenPtr[1].start;
+ numBytes = tokenPtr[1].size;
- Tcl_DStringInit(&bodyList);
- Tcl_DStringAppend(&bodyList, tokenPtr[1].start, tokenPtr[1].size);
- if (Tcl_SplitList(NULL, Tcl_DStringValue(&bodyList), &numWords,
- &argv) != TCL_OK) {
- Tcl_DStringFree(&bodyList);
- return TCL_ERROR;
- }
- Tcl_DStringFree(&bodyList);
-
- /*
- * Now we know what the switch arms are, we've got to see whether we
- * can synthesize tokens for the arms. First check whether we've got a
- * valid number of arms since we can do that now.
- */
-
- if (numWords == 0 || numWords % 2) {
- ckfree((char *) argv);
+ /* Allocate enough space to work in. */
+ maxLen = TclMaxListLength(bytes, numBytes, NULL);
+ if (maxLen < 2) {
return TCL_ERROR;
}
-
- isListedArms = 1;
- bodyTokenArray = (Tcl_Token *) ckalloc(sizeof(Tcl_Token) * numWords);
- bodyToken = (Tcl_Token **) ckalloc(sizeof(Tcl_Token *) * numWords);
- bodyLines = (int *) ckalloc(sizeof(int) * numWords);
- bodyNext = (int **) ckalloc(sizeof(int*) * numWords);
-
- /*
- * Locate the start of the arms within the overall word.
- */
+ bodyTokenArray = (Tcl_Token *) ckalloc(sizeof(Tcl_Token) * maxLen);
+ bodyToken = (Tcl_Token **) ckalloc(sizeof(Tcl_Token *) * maxLen);
+ bodyLines = (int *) ckalloc(sizeof(int) * maxLen);
+ bodyNext = (int **) ckalloc(sizeof(int*) * maxLen);
bline = mapPtr->loc[eclIndex].line[valueIndex+1];
- p = tokenStartPtr = tokenPtr[1].start;
- while (isspace(UCHAR(*tokenStartPtr))) {
- tokenStartPtr++;
- }
- if (*tokenStartPtr == '{') {
- tokenStartPtr++;
- isTokenBraced = 1;
- } else {
- isTokenBraced = 0;
- }
+ numWords = 0;
- /*
- * TIP #280: Count lines within the literal list.
- */
-
- for (i=0 ; i<numWords ; i++) {
- bodyTokenArray[i].type = TCL_TOKEN_TEXT;
- bodyTokenArray[i].start = tokenStartPtr;
- bodyTokenArray[i].size = strlen(argv[i]);
- bodyTokenArray[i].numComponents = 0;
- bodyToken[i] = bodyTokenArray+i;
- tokenStartPtr += bodyTokenArray[i].size;
-
- /*
- * Test to see if we have guessed the end of the word correctly;
- * if not, we can't feed the real string to the sub-compilation
- * engine, and we're then stuck and so have to punt out to doing
- * everything at runtime.
- */
+ while (numBytes > 0) {
+ CONST char *prevBytes = bytes;
+ int literal;
- if ((isTokenBraced && *(tokenStartPtr++) != '}') ||
- (tokenStartPtr < tokenPtr[1].start+tokenPtr[1].size
- && !isspace(UCHAR(*tokenStartPtr)))) {
- ckfree((char *) argv);
+ if (TCL_OK != TclFindElement(NULL, bytes, numBytes,
+ &(bodyTokenArray[numWords].start), &bytes,
+ &(bodyTokenArray[numWords].size), &literal) || !literal) {
+ abort:
ckfree((char *) bodyToken);
ckfree((char *) bodyTokenArray);
ckfree((char *) bodyLines);
@@ -4137,48 +4087,30 @@ TclCompileSwitchCmd(
return TCL_ERROR;
}
+ bodyTokenArray[numWords].type = TCL_TOKEN_TEXT;
+ bodyTokenArray[numWords].numComponents = 0;
+ bodyToken[numWords] = bodyTokenArray + numWords;
+
/*
* TIP #280: Now determine the line the list element starts on
* (there is no need to do it earlier, due to the possibility of
* aborting, see above).
*/
- TclAdvanceLines(&bline, p, bodyTokenArray[i].start);
+ TclAdvanceLines(&bline, prevBytes, bodyTokenArray[numWords].start);
TclAdvanceContinuations (&bline, &clNext,
- bodyTokenArray[i].start - envPtr->source);
- bodyLines[i] = bline;
- bodyNext[i] = clNext;
- p = bodyTokenArray[i].start;
-
- while (isspace(UCHAR(*tokenStartPtr))) {
- tokenStartPtr++;
- if (tokenStartPtr >= tokenPtr[1].start+tokenPtr[1].size) {
- break;
- }
- }
- if (*tokenStartPtr == '{') {
- tokenStartPtr++;
- isTokenBraced = 1;
- } else {
- isTokenBraced = 0;
- }
+ bodyTokenArray[numWords].start - envPtr->source);
+ bodyLines[numWords] = bline;
+ bodyNext[numWords] = clNext;
+ TclAdvanceLines(&bline, bodyTokenArray[numWords].start, bytes);
+ TclAdvanceContinuations (&bline, &clNext, bytes - envPtr->source);
+
+ numBytes -= (bytes - prevBytes);
+ numWords++;
}
- ckfree((char *) argv);
-
- /*
- * Check that we've parsed everything we thought we were going to
- * parse. If not, something odd is going on (I believe it is possible
- * to defeat the code above) and we should bail out.
- */
-
- if (tokenStartPtr != tokenPtr[1].start+tokenPtr[1].size) {
- ckfree((char *) bodyToken);
- ckfree((char *) bodyTokenArray);
- ckfree((char *) bodyLines);
- ckfree((char *) bodyNext);
- return TCL_ERROR;
+ if (numWords % 2) {
+ goto abort;
}
-
} else if (numWords % 2 || numWords == 0) {
/*
* Odd number of words (>1) available, or no words at all available.
@@ -4205,8 +4137,7 @@ TclCompileSwitchCmd(
* traces, etc.
*/
- if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD ||
- tokenPtr->numComponents != 1) {
+ if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
ckfree((char *) bodyToken);
ckfree((char *) bodyLines);
ckfree((char *) bodyNext);
@@ -4255,7 +4186,7 @@ TclCompileSwitchCmd(
* but it handles the most common case well enough.
*/
- if (isListedArms && mode == Switch_Exact && !noCase) {
+ if (mode == Switch_Exact) {
JumptableInfo *jtPtr;
int infoIndex, isNew, *finalFixups, numRealBodies = 0, jumpLocation;
int mustGenerate, jumpToDefault;
generated by cgit v0.12 at 2024-11-19 21:57:33 (GMT)