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authormig <mig>2013-12-06 01:07:10 (GMT)
committermig <mig>2013-12-06 01:07:10 (GMT)
commit53009920c226ade2ef2f7f12b73ee9cc0bcf766b (patch)
tree72bbbf92c101d838c551ad5c496c397d35d0352f /generic
parentbd06c04659422136285db5fbcb585c18d10b595d (diff)
downloadtcl-53009920c226ade2ef2f7f12b73ee9cc0bcf766b.zip
tcl-53009920c226ade2ef2f7f12b73ee9cc0bcf766b.tar.gz
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adapted the array-set compiler to use the new foreach opcodes
Diffstat (limited to 'generic')
-rw-r--r--generic/tclCompCmds.c83
-rw-r--r--generic/tclExecute.c1
2 files changed, 31 insertions, 53 deletions
diff --git a/generic/tclCompCmds.c b/generic/tclCompCmds.c
index 73b1ec3..b8b2605 100644
--- a/generic/tclCompCmds.c
+++ b/generic/tclCompCmds.c
@@ -245,8 +245,8 @@ TclCompileArraySetCmd(
Tcl_Token *varTokenPtr, *dataTokenPtr;
int isScalar, localIndex, code = TCL_OK;
int isDataLiteral, isDataValid, isDataEven, len;
- int dataVar, iterVar, keyVar, valVar, infoIndex;
- int back, fwd, offsetBack, offsetFwd;
+ int keyVar, valVar, infoIndex;
+ int fwd, offsetBack, offsetFwd;
Tcl_Obj *literalObj;
ForeachInfo *infoPtr;
@@ -290,6 +290,7 @@ TclCompileArraySetCmd(
code = TCL_ERROR;
goto done;
}
+
/*
* Special case: literal empty value argument is just an "ensure array"
* operation.
@@ -314,19 +315,28 @@ TclCompileArraySetCmd(
goto done;
}
+ if (localIndex < 0) {
+ /*
+ * a non-local variable: upvar from a local one! This consumes the
+ * variable name that was left at stacktop.
+ */
+
+ localIndex = AnonymousLocal(envPtr);
+ PushStringLiteral(envPtr, "0");
+ TclEmitInstInt4(INST_REVERSE, 2, envPtr);
+ TclEmitInstInt4(INST_UPVAR, localIndex, envPtr);
+ TclEmitOpcode(INST_POP, envPtr);
+ }
+
/*
* Prepare for the internal foreach.
*/
- dataVar = AnonymousLocal(envPtr);
- iterVar = AnonymousLocal(envPtr);
keyVar = AnonymousLocal(envPtr);
valVar = AnonymousLocal(envPtr);
infoPtr = ckalloc(sizeof(ForeachInfo));
infoPtr->numLists = 1;
- infoPtr->firstValueTemp = dataVar;
- infoPtr->loopCtTemp = iterVar;
infoPtr->varLists[0] = ckalloc(sizeof(ForeachVarList) + sizeof(int));
infoPtr->varLists[0]->numVars = 2;
infoPtr->varLists[0]->varIndexes[0] = keyVar;
@@ -360,54 +370,23 @@ TclCompileArraySetCmd(
fwd = CurrentOffset(envPtr) - offsetFwd;
TclStoreInt1AtPtr(fwd, envPtr->codeStart+offsetFwd+1);
}
- Emit14Inst( INST_STORE_SCALAR, dataVar, envPtr);
- TclEmitOpcode( INST_POP, envPtr);
- if (localIndex >= 0) {
- TclEmitInstInt4(INST_ARRAY_EXISTS_IMM, localIndex, envPtr);
- TclEmitInstInt1(INST_JUMP_TRUE1, 7, envPtr);
- TclEmitInstInt4(INST_ARRAY_MAKE_IMM, localIndex, envPtr);
- TclEmitInstInt4(INST_FOREACH_START4, infoIndex, envPtr);
- offsetBack = CurrentOffset(envPtr);
- TclEmitInstInt4(INST_FOREACH_STEP4, infoIndex, envPtr);
- offsetFwd = CurrentOffset(envPtr);
- TclEmitInstInt1(INST_JUMP_FALSE1, 0, envPtr);
- Emit14Inst( INST_LOAD_SCALAR, keyVar, envPtr);
- Emit14Inst( INST_LOAD_SCALAR, valVar, envPtr);
- Emit14Inst( INST_STORE_ARRAY, localIndex, envPtr);
- TclEmitOpcode( INST_POP, envPtr);
- back = offsetBack - CurrentOffset(envPtr);
- TclEmitInstInt1(INST_JUMP1, back, envPtr);
- fwd = CurrentOffset(envPtr) - offsetFwd;
- TclStoreInt1AtPtr(fwd, envPtr->codeStart+offsetFwd+1);
- } else {
- TclEmitOpcode( INST_DUP, envPtr);
- TclEmitOpcode( INST_ARRAY_EXISTS_STK, envPtr);
- TclEmitInstInt1(INST_JUMP_TRUE1, 4, envPtr);
- TclEmitOpcode( INST_DUP, envPtr);
- TclEmitOpcode( INST_ARRAY_MAKE_STK, envPtr);
- TclEmitInstInt4(INST_FOREACH_START4, infoIndex, envPtr);
- offsetBack = CurrentOffset(envPtr);
- TclEmitInstInt4(INST_FOREACH_STEP4, infoIndex, envPtr);
- offsetFwd = CurrentOffset(envPtr);
- TclEmitInstInt1(INST_JUMP_FALSE1, 0, envPtr);
- TclEmitOpcode( INST_DUP, envPtr);
- Emit14Inst( INST_LOAD_SCALAR, keyVar, envPtr);
- Emit14Inst( INST_LOAD_SCALAR, valVar, envPtr);
- TclEmitOpcode( INST_STORE_ARRAY_STK, envPtr);
- TclEmitOpcode( INST_POP, envPtr);
- back = offsetBack - CurrentOffset(envPtr);
- TclEmitInstInt1(INST_JUMP1, back, envPtr);
- fwd = CurrentOffset(envPtr) - offsetFwd;
- TclStoreInt1AtPtr(fwd, envPtr->codeStart+offsetFwd+1);
- TclEmitOpcode( INST_POP, envPtr);
- }
- if (!isDataLiteral) {
- TclEmitInstInt1(INST_UNSET_SCALAR, 0, envPtr);
- TclEmitInt4( dataVar, envPtr);
- }
+ TclEmitInstInt4(INST_ARRAY_EXISTS_IMM, localIndex, envPtr);
+ TclEmitInstInt1(INST_JUMP_TRUE1, 7, envPtr);
+ TclEmitInstInt4(INST_ARRAY_MAKE_IMM, localIndex, envPtr);
+ TclEmitInstInt4(INST_FOREACH_START, infoIndex, envPtr);
+ offsetBack = CurrentOffset(envPtr);
+ Emit14Inst( INST_LOAD_SCALAR, keyVar, envPtr);
+ Emit14Inst( INST_LOAD_SCALAR, valVar, envPtr);
+ Emit14Inst( INST_STORE_ARRAY, localIndex, envPtr);
+ TclEmitOpcode( INST_POP, envPtr);
+ infoPtr->loopCtTemp = offsetBack - CurrentOffset(envPtr); /*misuse */
+ TclEmitOpcode( INST_FOREACH_STEP, envPtr);
+ TclEmitOpcode( INST_FOREACH_END, envPtr);
+ TclAdjustStackDepth(-3, envPtr);
PushStringLiteral(envPtr, "");
- done:
+
+ done:
Tcl_DecrRefCount(literalObj);
return code;
}
diff --git a/generic/tclExecute.c b/generic/tclExecute.c
index fe05b30..a831cd6 100644
--- a/generic/tclExecute.c
+++ b/generic/tclExecute.c
@@ -6259,7 +6259,6 @@ TEBCresume(
pc += 5 - infoPtr->loopCtTemp;
case INST_FOREACH_STEP:
- /* THIS INSTRUCTION IS ONLY CALLED AS A CONTINUE TARGET */
/*
* "Step" a foreach loop (i.e., begin its next iteration) by assigning
* the next value list element to each loop var.