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-rw-r--r--generic/tclCompCmdsGR.c533
1 files changed, 388 insertions, 145 deletions
diff --git a/generic/tclCompCmdsGR.c b/generic/tclCompCmdsGR.c
index 43ea3d3..b8a7e0f 100644
--- a/generic/tclCompCmdsGR.c
+++ b/generic/tclCompCmdsGR.c
@@ -28,6 +28,58 @@ static void CompileReturnInternal(CompileEnv *envPtr,
static int IndexTailVarIfKnown(Tcl_Interp *interp,
Tcl_Token *varTokenPtr, CompileEnv *envPtr);
+#define INDEX_END (-2)
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetIndexFromToken --
+ *
+ * Parse a token and get the encoded version of the index (as understood
+ * by TEBC), assuming it is at all knowable at compile time. Only handles
+ * indices that are integers or 'end' or 'end-integer'.
+ *
+ * Returns:
+ * TCL_OK if parsing succeeded, and TCL_ERROR if it failed.
+ *
+ * Side effects:
+ * Sets *index to the index value if successful.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static inline int
+GetIndexFromToken(
+ Tcl_Token *tokenPtr,
+ int *index)
+{
+ Tcl_Obj *tmpObj = Tcl_NewObj();
+ int result, idx;
+
+ if (!TclWordKnownAtCompileTime(tokenPtr, tmpObj)) {
+ Tcl_DecrRefCount(tmpObj);
+ return TCL_ERROR;
+ }
+
+ result = TclGetIntFromObj(NULL, tmpObj, &idx);
+ if (result == TCL_OK) {
+ if (idx < 0) {
+ result = TCL_ERROR;
+ }
+ } else {
+ result = TclGetIntForIndexM(NULL, tmpObj, INDEX_END, &idx);
+ if (result == TCL_OK && idx > INDEX_END) {
+ result = TCL_ERROR;
+ }
+ }
+ Tcl_DecrRefCount(tmpObj);
+
+ if (result == TCL_OK) {
+ *index = idx;
+ }
+
+ return result;
+}
/*
*----------------------------------------------------------------------
@@ -229,6 +281,7 @@ TclCompileIfCmd(
SetLineInformation(wordIdx);
Tcl_ResetResult(interp);
TclCompileExprWords(interp, testTokenPtr, 1, envPtr);
+ TclClearNumConversion(envPtr);
if (jumpFalseFixupArray.next >= jumpFalseFixupArray.end) {
TclExpandJumpFixupArray(&jumpFalseFixupArray);
}
@@ -478,6 +531,7 @@ TclCompileIncrCmd(
} else {
SetLineInformation(2);
CompileTokens(envPtr, incrTokenPtr, interp);
+ TclClearNumConversion(envPtr);
}
} else { /* No incr amount given so use 1. */
haveImmValue = 1;
@@ -1027,7 +1081,7 @@ TclCompileLassignCmd(
*/
TclEmitInstInt4( INST_LIST_RANGE_IMM, idx, envPtr);
- TclEmitInt4( -2 /* == "end" */, envPtr);
+ TclEmitInt4( INDEX_END, envPtr);
return TCL_OK;
}
@@ -1060,7 +1114,7 @@ TclCompileLindexCmd(
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Tcl_Token *idxTokenPtr, *valTokenPtr;
- int i, numWords = parsePtr->numWords;
+ int i, idx, numWords = parsePtr->numWords;
DefineLineInformation; /* TIP #280 */
/*
@@ -1078,46 +1132,28 @@ TclCompileLindexCmd(
}
idxTokenPtr = TokenAfter(valTokenPtr);
- if (idxTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
- Tcl_Obj *tmpObj;
- int idx, result;
-
- tmpObj = Tcl_NewStringObj(idxTokenPtr[1].start, idxTokenPtr[1].size);
- result = TclGetIntFromObj(NULL, tmpObj, &idx);
- if (result == TCL_OK) {
- if (idx < 0) {
- result = TCL_ERROR;
- }
- } else {
- result = TclGetIntForIndexM(NULL, tmpObj, -2, &idx);
- if (result == TCL_OK && idx > -2) {
- result = TCL_ERROR;
- }
- }
- TclDecrRefCount(tmpObj);
-
- if (result == TCL_OK) {
- /*
- * All checks have been completed, and we have exactly one of
- * these constructs:
- * lindex <arbitraryValue> <posInt>
- * lindex <arbitraryValue> end-<posInt>
- * This is best compiled as a push of the arbitrary value followed
- * by an "immediate lindex" which is the most efficient variety.
- */
-
- CompileWord(envPtr, valTokenPtr, interp, 1);
- TclEmitInstInt4( INST_LIST_INDEX_IMM, idx, envPtr);
- return TCL_OK;
- }
-
+ if (GetIndexFromToken(idxTokenPtr, &idx) == TCL_OK) {
/*
- * If the conversion failed or the value was negative, we just keep on
- * going with the more complex compilation.
+ * All checks have been completed, and we have exactly one of these
+ * constructs:
+ * lindex <arbitraryValue> <posInt>
+ * lindex <arbitraryValue> end-<posInt>
+ * This is best compiled as a push of the arbitrary value followed by
+ * an "immediate lindex" which is the most efficient variety.
*/
+
+ CompileWord(envPtr, valTokenPtr, interp, 1);
+ TclEmitInstInt4( INST_LIST_INDEX_IMM, idx, envPtr);
+ return TCL_OK;
}
/*
+ * If the value was not known at compile time, the conversion failed or
+ * the value was negative, we just keep on going with the more complex
+ * compilation.
+ */
+
+ /*
* Push the operands onto the stack.
*/
@@ -1263,7 +1299,7 @@ TclCompileListCmd(
if (concat && numWords == 2) {
TclEmitInstInt4( INST_LIST_RANGE_IMM, 0, envPtr);
- TclEmitInt4( -2, envPtr);
+ TclEmitInt4( INDEX_END, envPtr);
}
return TCL_OK;
}
@@ -1330,8 +1366,7 @@ TclCompileLrangeCmd(
{
Tcl_Token *tokenPtr, *listTokenPtr;
DefineLineInformation; /* TIP #280 */
- Tcl_Obj *tmpObj;
- int idx1, idx2, result;
+ int idx1, idx2;
if (parsePtr->numWords != 4) {
return TCL_ERROR;
@@ -1339,56 +1374,18 @@ TclCompileLrangeCmd(
listTokenPtr = TokenAfter(parsePtr->tokenPtr);
/*
- * Parse the first index. Will only compile if it is constant and not an
+ * Parse the indices. Will only compile if both are constants and not an
* _integer_ less than zero (since we reserve negative indices here for
- * end-relative indexing).
+ * end-relative indexing) or an end-based index greater than 'end' itself.
*/
tokenPtr = TokenAfter(listTokenPtr);
- if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
- return TCL_ERROR;
- }
- tmpObj = Tcl_NewStringObj(tokenPtr[1].start, tokenPtr[1].size);
- result = TclGetIntFromObj(NULL, tmpObj, &idx1);
- if (result == TCL_OK) {
- if (idx1 < 0) {
- result = TCL_ERROR;
- }
- } else {
- result = TclGetIntForIndexM(NULL, tmpObj, -2, &idx1);
- if (result == TCL_OK && idx1 > -2) {
- result = TCL_ERROR;
- }
- }
- TclDecrRefCount(tmpObj);
- if (result != TCL_OK) {
+ if (GetIndexFromToken(tokenPtr, &idx1) != TCL_OK) {
return TCL_ERROR;
}
- /*
- * Parse the second index. Will only compile if it is constant and not an
- * _integer_ less than zero (since we reserve negative indices here for
- * end-relative indexing).
- */
-
tokenPtr = TokenAfter(tokenPtr);
- if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
- return TCL_ERROR;
- }
- tmpObj = Tcl_NewStringObj(tokenPtr[1].start, tokenPtr[1].size);
- result = TclGetIntFromObj(NULL, tmpObj, &idx2);
- if (result == TCL_OK) {
- if (idx2 < 0) {
- result = TCL_ERROR;
- }
- } else {
- result = TclGetIntForIndexM(NULL, tmpObj, -2, &idx2);
- if (result == TCL_OK && idx2 > -2) {
- result = TCL_ERROR;
- }
- }
- TclDecrRefCount(tmpObj);
- if (result != TCL_OK) {
+ if (GetIndexFromToken(tokenPtr, &idx2) != TCL_OK) {
return TCL_ERROR;
}
@@ -1407,19 +1404,16 @@ TclCompileLrangeCmd(
/*
*----------------------------------------------------------------------
*
- * TclCompileLreplaceCmd --
+ * TclCompileLinsertCmd --
*
- * How to compile the "lreplace" command. We only bother with the case
- * where there are no elements to insert and where both the 'first' and
- * 'last' arguments are constant and one can be deterined to be at the
- * end of the list. (This is the case that could also be written with
- * "lrange".)
+ * How to compile the "linsert" command. We only bother with the case
+ * where the index is constant.
*
*----------------------------------------------------------------------
*/
int
-TclCompileLreplaceCmd(
+TclCompileLinsertCmd(
Tcl_Interp *interp, /* Tcl interpreter for context. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the
* command. */
@@ -1429,101 +1423,272 @@ TclCompileLreplaceCmd(
{
Tcl_Token *tokenPtr, *listTokenPtr;
DefineLineInformation; /* TIP #280 */
- Tcl_Obj *tmpObj;
- int idx1, idx2, result, guaranteedDropAll = 0;
+ int idx, i;
- if (parsePtr->numWords != 4) {
+ if (parsePtr->numWords < 3) {
return TCL_ERROR;
}
listTokenPtr = TokenAfter(parsePtr->tokenPtr);
/*
- * Parse the first index. Will only compile if it is constant and not an
+ * Parse the index. Will only compile if it is constant and not an
* _integer_ less than zero (since we reserve negative indices here for
- * end-relative indexing).
+ * end-relative indexing) or an end-based index greater than 'end' itself.
*/
tokenPtr = TokenAfter(listTokenPtr);
- if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+ if (GetIndexFromToken(tokenPtr, &idx) != TCL_OK) {
return TCL_ERROR;
}
- tmpObj = Tcl_NewStringObj(tokenPtr[1].start, tokenPtr[1].size);
- result = TclGetIntFromObj(NULL, tmpObj, &idx1);
- if (result == TCL_OK) {
- if (idx1 < 0) {
- result = TCL_ERROR;
- }
+
+ /*
+ * There are four main cases. If there are no values to insert, this is
+ * just a confirm-listiness check. If the index is '0', this is a prepend.
+ * If the index is 'end' (== INDEX_END), this is an append. Otherwise,
+ * this is a splice (== split, insert values as list, concat-3).
+ */
+
+ CompileWord(envPtr, listTokenPtr, interp, 1);
+ if (parsePtr->numWords == 3) {
+ TclEmitInstInt4( INST_LIST_RANGE_IMM, 0, envPtr);
+ TclEmitInt4( INDEX_END, envPtr);
+ return TCL_OK;
+ }
+
+ for (i=3 ; i<parsePtr->numWords ; i++) {
+ tokenPtr = TokenAfter(tokenPtr);
+ CompileWord(envPtr, tokenPtr, interp, i);
+ }
+ TclEmitInstInt4( INST_LIST, i-3, envPtr);
+
+ if (idx == 0 /*start*/) {
+ TclEmitInstInt4( INST_REVERSE, 2, envPtr);
+ TclEmitOpcode( INST_LIST_CONCAT, envPtr);
+ } else if (idx == INDEX_END /*end*/) {
+ TclEmitOpcode( INST_LIST_CONCAT, envPtr);
} else {
- result = TclGetIntForIndexM(NULL, tmpObj, -2, &idx1);
- if (result == TCL_OK && idx1 > -2) {
- result = TCL_ERROR;
+ if (idx < 0) {
+ idx++;
}
+ TclEmitInstInt4( INST_OVER, 1, envPtr);
+ TclEmitInstInt4( INST_LIST_RANGE_IMM, 0, envPtr);
+ TclEmitInt4( idx-1, envPtr);
+ TclEmitInstInt4( INST_REVERSE, 3, envPtr);
+ TclEmitInstInt4( INST_LIST_RANGE_IMM, idx, envPtr);
+ TclEmitInt4( INDEX_END, envPtr);
+ TclEmitOpcode( INST_LIST_CONCAT, envPtr);
+ TclEmitOpcode( INST_LIST_CONCAT, envPtr);
}
- TclDecrRefCount(tmpObj);
- if (result != TCL_OK) {
+
+ return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCompileLreplaceCmd --
+ *
+ * How to compile the "lreplace" command. We only bother with the case
+ * where the indices are constant.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileLreplaceCmd(
+ Tcl_Interp *interp, /* Tcl interpreter for context. */
+ Tcl_Parse *parsePtr, /* Points to a parse structure for the
+ * command. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
+ CompileEnv *envPtr) /* Holds the resulting instructions. */
+{
+ Tcl_Token *tokenPtr, *listTokenPtr;
+ DefineLineInformation; /* TIP #280 */
+ Tcl_Obj *tmpObj;
+ int idx1, idx2, i, offset;
+
+ if (parsePtr->numWords < 4) {
return TCL_ERROR;
}
+ listTokenPtr = TokenAfter(parsePtr->tokenPtr);
/*
- * Parse the second index. Will only compile if it is constant and not an
+ * Parse the indices. Will only compile if both are constants and not an
* _integer_ less than zero (since we reserve negative indices here for
- * end-relative indexing).
+ * end-relative indexing) or an end-based index greater than 'end' itself.
*/
- tokenPtr = TokenAfter(tokenPtr);
- if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+ tokenPtr = TokenAfter(listTokenPtr);
+ if (GetIndexFromToken(tokenPtr, &idx1) != TCL_OK) {
return TCL_ERROR;
}
- tmpObj = Tcl_NewStringObj(tokenPtr[1].start, tokenPtr[1].size);
- result = TclGetIntFromObj(NULL, tmpObj, &idx2);
- if (result == TCL_OK) {
- if (idx2 < 0) {
- result = TCL_ERROR;
- }
- } else {
- result = TclGetIntForIndexM(NULL, tmpObj, -2, &idx2);
- if (result == TCL_OK && idx2 > -2) {
- result = TCL_ERROR;
- }
- }
- TclDecrRefCount(tmpObj);
- if (result != TCL_OK) {
+
+ tokenPtr = TokenAfter(tokenPtr);
+ if (GetIndexFromToken(tokenPtr, &idx2) != TCL_OK) {
return TCL_ERROR;
}
/*
- * Sanity check: can only issue when we're removing a range at one or
- * other end of the list. If we're at one end or the other, convert the
- * indices into the equivalent for an [lrange].
+ * Work out what this [lreplace] is actually doing.
*/
+ tmpObj = NULL;
+ CompileWord(envPtr, listTokenPtr, interp, 1);
+ if (parsePtr->numWords == 4) {
+ if (idx1 == 0) {
+ if (idx2 == INDEX_END) {
+ goto dropAll;
+ }
+ idx1 = idx2 + 1;
+ idx2 = INDEX_END;
+ goto dropEnd;
+ } else if (idx2 == INDEX_END) {
+ idx2 = idx1 - 1;
+ idx1 = 0;
+ goto dropEnd;
+ } else {
+ if (idx1 > 0) {
+ tmpObj = Tcl_NewIntObj(idx1);
+ Tcl_IncrRefCount(tmpObj);
+ }
+ goto dropRange;
+ }
+ }
+
+ tokenPtr = TokenAfter(tokenPtr);
+ for (i=4 ; i<parsePtr->numWords ; i++) {
+ CompileWord(envPtr, tokenPtr, interp, i);
+ tokenPtr = TokenAfter(tokenPtr);
+ }
+ TclEmitInstInt4( INST_LIST, i - 4, envPtr);
+ TclEmitInstInt4( INST_REVERSE, 2, envPtr);
if (idx1 == 0) {
- if (idx2 == -2) {
- guaranteedDropAll = 1;
+ if (idx2 == INDEX_END) {
+ goto replaceAll;
}
idx1 = idx2 + 1;
- idx2 = -2;
- } else if (idx2 == -2) {
+ idx2 = INDEX_END;
+ goto replaceHead;
+ } else if (idx2 == INDEX_END) {
idx2 = idx1 - 1;
idx1 = 0;
+ goto replaceTail;
} else {
- return TCL_ERROR;
+ if (idx1 > 0 && idx2 > 0 && idx2 < idx1) {
+ idx2 = idx1 - 1;
+ } else if (idx1 < 0 && idx2 < 0 && idx2 < idx1) {
+ idx2 = idx1 - 1;
+ }
+ if (idx1 > 0) {
+ tmpObj = Tcl_NewIntObj(idx1);
+ Tcl_IncrRefCount(tmpObj);
+ }
+ goto replaceRange;
}
/*
- * Issue instructions. It's not safe to skip doing the LIST_RANGE, as
- * we've not proved that the 'list' argument is really a list. Not that it
- * is worth trying to do that given current knowledge.
+ * Issue instructions to perform the operations relating to configurations
+ * that just drop. The only argument pushed on the stack is the list to
+ * operate on.
*/
- CompileWord(envPtr, listTokenPtr, interp, 1);
- if (guaranteedDropAll) {
+ dropAll:
+ TclEmitOpcode( INST_LIST_LENGTH, envPtr);
+ TclEmitOpcode( INST_POP, envPtr);
+ PushStringLiteral(envPtr, "");
+ goto done;
+
+ dropEnd:
+ TclEmitInstInt4( INST_LIST_RANGE_IMM, idx1, envPtr);
+ TclEmitInt4( idx2, envPtr);
+ goto done;
+
+ dropRange:
+ if (tmpObj != NULL) {
+ TclEmitOpcode( INST_DUP, envPtr);
TclEmitOpcode( INST_LIST_LENGTH, envPtr);
- TclEmitOpcode( INST_POP, envPtr);
- PushStringLiteral(envPtr, "");
- } else {
- TclEmitInstInt4( INST_LIST_RANGE_IMM, idx1, envPtr);
- TclEmitInt4( idx2, envPtr);
+ TclEmitPush(TclAddLiteralObj(envPtr, tmpObj, NULL), envPtr);
+ TclEmitOpcode( INST_GT, envPtr);
+ offset = CurrentOffset(envPtr);
+ TclEmitInstInt1( INST_JUMP_TRUE1, 0, envPtr);
+ TclEmitPush(TclAddLiteralObj(envPtr, Tcl_ObjPrintf(
+ "list doesn't contain element %d", idx1), NULL), envPtr);
+ CompileReturnInternal(envPtr, INST_RETURN_IMM, TCL_ERROR, 0,
+ Tcl_ObjPrintf("-errorcode {TCL OPERATION LREPLACE BADIDX}"));
+ TclStoreInt1AtPtr(CurrentOffset(envPtr) - offset,
+ envPtr->codeStart + offset + 1);
+ TclAdjustStackDepth(-1, envPtr);
+ }
+ TclEmitOpcode( INST_DUP, envPtr);
+ TclEmitInstInt4( INST_LIST_RANGE_IMM, 0, envPtr);
+ TclEmitInt4( idx1 - 1, envPtr);
+ TclEmitInstInt4( INST_REVERSE, 2, envPtr);
+ TclEmitInstInt4( INST_LIST_RANGE_IMM, idx2 + 1, envPtr);
+ TclEmitInt4( INDEX_END, envPtr);
+ TclEmitOpcode( INST_LIST_CONCAT, envPtr);
+ goto done;
+
+ /*
+ * Issue instructions to perform the operations relating to configurations
+ * that do real replacement. All arguments are pushed and assembled into a
+ * pair: the list of values to replace with, and the list to do the
+ * surgery on.
+ */
+
+ replaceAll:
+ TclEmitOpcode( INST_LIST_LENGTH, envPtr);
+ TclEmitOpcode( INST_POP, envPtr);
+ goto done;
+
+ replaceHead:
+ TclEmitInstInt4( INST_LIST_RANGE_IMM, idx1, envPtr);
+ TclEmitInt4( idx2, envPtr);
+ TclEmitOpcode( INST_LIST_CONCAT, envPtr);
+ goto done;
+
+ replaceTail:
+ TclEmitInstInt4( INST_LIST_RANGE_IMM, idx1, envPtr);
+ TclEmitInt4( idx2, envPtr);
+ TclEmitInstInt4( INST_REVERSE, 2, envPtr);
+ TclEmitOpcode( INST_LIST_CONCAT, envPtr);
+ goto done;
+
+ replaceRange:
+ if (tmpObj != NULL) {
+ TclEmitOpcode( INST_DUP, envPtr);
+ TclEmitOpcode( INST_LIST_LENGTH, envPtr);
+ TclEmitPush(TclAddLiteralObj(envPtr, tmpObj, NULL), envPtr);
+ TclEmitOpcode( INST_GT, envPtr);
+ offset = CurrentOffset(envPtr);
+ TclEmitInstInt1( INST_JUMP_TRUE1, 0, envPtr);
+ TclEmitPush(TclAddLiteralObj(envPtr, Tcl_ObjPrintf(
+ "list doesn't contain element %d", idx1), NULL), envPtr);
+ CompileReturnInternal(envPtr, INST_RETURN_IMM, TCL_ERROR, 0,
+ Tcl_ObjPrintf("-errorcode {TCL OPERATION LREPLACE BADIDX}"));
+ TclStoreInt1AtPtr(CurrentOffset(envPtr) - offset,
+ envPtr->codeStart + offset + 1);
+ TclAdjustStackDepth(-1, envPtr);
+ }
+ TclEmitOpcode( INST_DUP, envPtr);
+ TclEmitInstInt4( INST_LIST_RANGE_IMM, 0, envPtr);
+ TclEmitInt4( idx1 - 1, envPtr);
+ TclEmitInstInt4( INST_REVERSE, 2, envPtr);
+ TclEmitInstInt4( INST_LIST_RANGE_IMM, idx2 + 1, envPtr);
+ TclEmitInt4( INDEX_END, envPtr);
+ TclEmitInstInt4( INST_REVERSE, 3, envPtr);
+ TclEmitOpcode( INST_LIST_CONCAT, envPtr);
+ TclEmitInstInt4( INST_REVERSE, 2, envPtr);
+ TclEmitOpcode( INST_LIST_CONCAT, envPtr);
+ goto done;
+
+ /*
+ * Clean up the allocated memory.
+ */
+
+ done:
+ if (tmpObj != NULL) {
+ Tcl_DecrRefCount(tmpObj);
}
return TCL_OK;
}
@@ -1791,6 +1956,28 @@ TclCompileNamespaceCodeCmd(
}
int
+TclCompileNamespaceOriginCmd(
+ Tcl_Interp *interp, /* Used for error reporting. */
+ Tcl_Parse *parsePtr, /* Points to a parse structure for the command
+ * created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
+ CompileEnv *envPtr) /* Holds resulting instructions. */
+{
+ Tcl_Token *tokenPtr;
+ DefineLineInformation; /* TIP #280 */
+
+ if (parsePtr->numWords != 2) {
+ return TCL_ERROR;
+ }
+ tokenPtr = TokenAfter(parsePtr->tokenPtr);
+
+ CompileWord(envPtr, tokenPtr, interp, 1);
+ TclEmitOpcode( INST_ORIGIN_COMMAND, envPtr);
+ return TCL_OK;
+}
+
+int
TclCompileNamespaceQualifiersCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
@@ -2367,7 +2554,7 @@ TclCompileReturnCmd(
CompileWord(envPtr, optsTokenPtr, interp, 2);
CompileWord(envPtr, msgTokenPtr, interp, 3);
- TclEmitOpcode(INST_RETURN_STK, envPtr);
+ TclEmitInvoke(envPtr, INST_RETURN_STK);
return TCL_OK;
}
@@ -2381,6 +2568,10 @@ TclCompileReturnCmd(
* Scan through the return options. If any are unknown at compile time,
* there is no value in bytecompiling. Save the option values known in an
* objv array for merging into a return options dictionary.
+ *
+ * TODO: There is potential for improvement if all option keys are known
+ * at compile time and all option values relating to '-code' and '-level'
+ * are known at compile time.
*/
for (objc = 0; objc < numOptionWords; objc++) {
@@ -2388,7 +2579,7 @@ TclCompileReturnCmd(
Tcl_IncrRefCount(objv[objc]);
if (!TclWordKnownAtCompileTime(wordTokenPtr, objv[objc])) {
/*
- * Non-literal, so punt to run-time.
+ * Non-literal, so punt to run-time assembly of the dictionary.
*/
for (; objc>=0 ; objc--) {
@@ -2509,7 +2700,7 @@ TclCompileReturnCmd(
* Issue the RETURN itself.
*/
- TclEmitOpcode(INST_RETURN_STK, envPtr);
+ TclEmitInvoke(envPtr, INST_RETURN_STK);
return TCL_OK;
}
@@ -2521,6 +2712,23 @@ CompileReturnInternal(
int level,
Tcl_Obj *returnOpts)
{
+ if (level == 0 && (code == TCL_BREAK || code == TCL_CONTINUE)) {
+ ExceptionRange *rangePtr;
+ ExceptionAux *exceptAux;
+
+ rangePtr = TclGetInnermostExceptionRange(envPtr, code, &exceptAux);
+ if (rangePtr && rangePtr->type == LOOP_EXCEPTION_RANGE) {
+ TclCleanupStackForBreakContinue(envPtr, exceptAux);
+ if (code == TCL_BREAK) {
+ TclAddLoopBreakFixup(envPtr, exceptAux);
+ } else {
+ TclAddLoopContinueFixup(envPtr, exceptAux);
+ }
+ Tcl_DecrRefCount(returnOpts);
+ return;
+ }
+ }
+
TclEmitPush(TclAddLiteralObj(envPtr, returnOpts, NULL), envPtr);
TclEmitInstInt4(op, code, envPtr);
TclEmitInt4(level, envPtr);
@@ -2831,6 +3039,41 @@ IndexTailVarIfKnown(
return localIndex;
}
+/*
+ * ----------------------------------------------------------------------
+ *
+ * TclCompileObjectNextCmd, TclCompileObjectSelfCmd --
+ *
+ * Compilations of the TclOO utility commands [next] and [self].
+ *
+ * ----------------------------------------------------------------------
+ */
+
+int
+TclCompileObjectNextCmd(
+ Tcl_Interp *interp, /* Used for error reporting. */
+ Tcl_Parse *parsePtr, /* Points to a parse structure for the command
+ * created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
+ CompileEnv *envPtr) /* Holds resulting instructions. */
+{
+ DefineLineInformation; /* TIP #280 */
+ Tcl_Token *tokenPtr = parsePtr->tokenPtr;
+ int i;
+
+ if (parsePtr->numWords > 255) {
+ return TCL_ERROR;
+ }
+
+ for (i=0 ; i<parsePtr->numWords ; i++) {
+ CompileWord(envPtr, tokenPtr, interp, i);
+ tokenPtr = TokenAfter(tokenPtr);
+ }
+ TclEmitInstInt1( INST_TCLOO_NEXT, i, envPtr);
+ return TCL_OK;
+}
+
int
TclCompileObjectSelfCmd(
Tcl_Interp *interp, /* Used for error reporting. */
generated by cgit v0.12 at 2024-08-20 15:50:03 (GMT)