diff options
Diffstat (limited to 'generic/tclCompCmdsSZ.c')
| -rw-r--r-- | generic/tclCompCmdsSZ.c | 516 |
1 files changed, 354 insertions, 162 deletions
diff --git a/generic/tclCompCmdsSZ.c b/generic/tclCompCmdsSZ.c index 381703b..5d67166 100644 --- a/generic/tclCompCmdsSZ.c +++ b/generic/tclCompCmdsSZ.c @@ -51,17 +51,20 @@ static void IssueSwitchJumpTable(Tcl_Interp *interp, Tcl_Token *valueTokenPtr, int numWords, Tcl_Token **bodyToken, int *bodyLines, int **bodyContLines); -static int IssueTryFinallyInstructions(Tcl_Interp *interp, +static int IssueTryClausesInstructions(Tcl_Interp *interp, CompileEnv *envPtr, Tcl_Token *bodyToken, int numHandlers, int *matchCodes, Tcl_Obj **matchClauses, int *resultVarIndices, - int *optionVarIndices, Tcl_Token **handlerTokens, - Tcl_Token *finallyToken); -static int IssueTryInstructions(Tcl_Interp *interp, + int *optionVarIndices, Tcl_Token **handlerTokens); +static int IssueTryClausesFinallyInstructions(Tcl_Interp *interp, CompileEnv *envPtr, Tcl_Token *bodyToken, int numHandlers, int *matchCodes, Tcl_Obj **matchClauses, int *resultVarIndices, - int *optionVarIndices, Tcl_Token **handlerTokens); + int *optionVarIndices, Tcl_Token **handlerTokens, + Tcl_Token *finallyToken); +static int IssueTryFinallyInstructions(Tcl_Interp *interp, + CompileEnv *envPtr, Tcl_Token *bodyToken, + Tcl_Token *finallyToken); /* * The structures below define the AuxData types defined in this file. @@ -89,10 +92,14 @@ const AuxDataType tclJumptableInfoType = { SetLineInformation((index));CompileBody(envPtr,(token),interp) #define PUSH(str) \ PushStringLiteral(envPtr, str) -#define JUMP(var,name) \ - (var) = CurrentOffset(envPtr);TclEmitInstInt4(INST_##name,0,envPtr) -#define FIXJUMP(var) \ +#define JUMP4(name,var) \ + (var) = CurrentOffset(envPtr);TclEmitInstInt4(INST_##name##4,0,envPtr) +#define FIXJUMP4(var) \ TclStoreInt4AtPtr(CurrentOffset(envPtr)-(var),envPtr->codeStart+(var)+1) +#define JUMP1(name,var) \ + (var) = CurrentOffset(envPtr);TclEmitInstInt1(INST_##name##1,0,envPtr) +#define FIXJUMP1(var) \ + TclStoreInt1AtPtr(CurrentOffset(envPtr)-(var),envPtr->codeStart+(var)+1) #define LOAD(idx) \ if ((idx)<256) {OP1(LOAD_SCALAR1,(idx));} else {OP4(LOAD_SCALAR4,(idx));} #define STORE(idx) \ @@ -2223,14 +2230,17 @@ TclCompileTryCmd( * Issue the bytecode. */ - if (finallyToken) { + if (!finallyToken) { + result = IssueTryClausesInstructions(interp, envPtr, bodyToken, + numHandlers, matchCodes, matchClauses, resultVarIndices, + optionVarIndices, handlerTokens); + } else if (numHandlers == 0) { result = IssueTryFinallyInstructions(interp, envPtr, bodyToken, + finallyToken); + } else { + result = IssueTryClausesFinallyInstructions(interp, envPtr, bodyToken, numHandlers, matchCodes, matchClauses, resultVarIndices, optionVarIndices, handlerTokens, finallyToken); - } else { - result = IssueTryInstructions(interp, envPtr, bodyToken, numHandlers, - matchCodes, matchClauses, resultVarIndices, optionVarIndices, - handlerTokens); } /* @@ -2256,12 +2266,13 @@ TclCompileTryCmd( /* *---------------------------------------------------------------------- * - * IssueTryInstructions, IssueTryFinallyInstructions -- + * IssueTryClausesInstructions, IssueTryClausesFinallyInstructions, + * IssueTryFinallyInstructions -- * * The code generators for [try]. Split from the parsing engine for - * reasons of developer sanity, and also split between no-finally and - * with-finally cases because so many of the details of generation vary - * between the two. + * reasons of developer sanity, and also split between no-finally, + * just-finally and with-finally cases because so many of the details of + * generation vary between the three. * * The macros below make the instruction issuing easier to follow. * @@ -2269,7 +2280,7 @@ TclCompileTryCmd( */ static int -IssueTryInstructions( +IssueTryClausesInstructions( Tcl_Interp *interp, CompileEnv *envPtr, Tcl_Token *bodyToken, @@ -2282,9 +2293,9 @@ IssueTryInstructions( { DefineLineInformation; /* TIP #280 */ int range, resultVar, optionsVar; - int savedStackDepth = envPtr->currStackDepth; - int i, j, len, forwardsNeedFixing = 0; + int i, j, len, forwardsNeedFixing = 0, trapZero = 0, afterBody = 0; int *addrsToFix, *forwardsToFix, notCodeJumpSource, notECJumpSource; + int *noError; char buf[TCL_INTEGER_SPACE]; resultVar = AnonymousLocal(envPtr); @@ -2294,6 +2305,18 @@ IssueTryInstructions( } /* + * Check if we're supposed to trap a normal TCL_OK completion of the body. + * If not, we can handle that case much more efficiently. + */ + + for (i=0 ; i<numHandlers ; i++) { + if (matchCodes[i] == 0) { + trapZero = 1; + break; + } + } + + /* * Compile the body, trapping any error in it so that we can trap on it * and/or run a finally clause. Note that there must be at least one * on/trap clause; when none is present, this whole function is not called @@ -2305,9 +2328,16 @@ IssueTryInstructions( ExceptionRangeStarts(envPtr, range); BODY( bodyToken, 1); ExceptionRangeEnds(envPtr, range); - PUSH( "0"); - OP4( REVERSE, 2); - OP1( JUMP1, 4); + if (!trapZero) { + OP( END_CATCH); + JUMP4( JUMP, afterBody); + TclAdjustStackDepth(-1, envPtr); + } else { + PUSH( "0"); + OP4( REVERSE, 2); + OP1( JUMP1, 4); + TclAdjustStackDepth(-2, envPtr); + } ExceptionRangeTarget(envPtr, range, catchOffset); OP( PUSH_RETURN_CODE); OP( PUSH_RESULT); @@ -2327,13 +2357,15 @@ IssueTryInstructions( addrsToFix = TclStackAlloc(interp, sizeof(int)*numHandlers); forwardsToFix = TclStackAlloc(interp, sizeof(int)*numHandlers); + noError = TclStackAlloc(interp, sizeof(int)*numHandlers); for (i=0 ; i<numHandlers ; i++) { + noError[i] = -1; sprintf(buf, "%d", matchCodes[i]); OP( DUP); PushLiteral(envPtr, buf, strlen(buf)); OP( EQ); - JUMP(notCodeJumpSource, JUMP_FALSE4); + JUMP4( JUMP_FALSE, notCodeJumpSource); if (matchClauses[i]) { const char *p; Tcl_ListObjLength(NULL, matchClauses[i], &len); @@ -2350,7 +2382,7 @@ IssueTryInstructions( p = Tcl_GetStringFromObj(matchClauses[i], &len); PushLiteral(envPtr, p, len); OP( STR_EQ); - JUMP(notECJumpSource, JUMP_FALSE4); + JUMP4( JUMP_FALSE, notECJumpSource); } else { notECJumpSource = -1; /* LINT */ } @@ -2374,8 +2406,10 @@ IssueTryInstructions( } if (!handlerTokens[i]) { forwardsNeedFixing = 1; - JUMP(forwardsToFix[i], JUMP4); + JUMP4( JUMP, forwardsToFix[i]); } else { + int dontChangeOptions; + forwardsToFix[i] = -1; if (forwardsNeedFixing) { forwardsNeedFixing = 0; @@ -2383,19 +2417,44 @@ IssueTryInstructions( if (forwardsToFix[j] == -1) { continue; } - FIXJUMP(forwardsToFix[j]); + FIXJUMP4(forwardsToFix[j]); forwardsToFix[j] = -1; } } - envPtr->currStackDepth = savedStackDepth; + range = TclCreateExceptRange(CATCH_EXCEPTION_RANGE, envPtr); + OP4( BEGIN_CATCH4, range); + ExceptionRangeStarts(envPtr, range); BODY( handlerTokens[i], 5+i*4); + ExceptionRangeEnds(envPtr, range); + OP( END_CATCH); + JUMP4( JUMP, noError[i]); + ExceptionRangeTarget(envPtr, range, catchOffset); + TclAdjustStackDepth(-1, envPtr); + OP( PUSH_RESULT); + OP( PUSH_RETURN_OPTIONS); + OP( PUSH_RETURN_CODE); + OP( END_CATCH); + PUSH( "1"); + OP( EQ); + JUMP1( JUMP_FALSE, dontChangeOptions); + LOAD( optionsVar); + OP4( REVERSE, 2); + STORE( optionsVar); + OP( POP); + PUSH( "-during"); + OP4( REVERSE, 2); + OP44( DICT_SET, 1, optionsVar); + TclAdjustStackDepth(-1, envPtr); + FIXJUMP1( dontChangeOptions); + OP4( REVERSE, 2); + OP( RETURN_STK); } - JUMP(addrsToFix[i], JUMP4); + JUMP4( JUMP, addrsToFix[i]); if (matchClauses[i]) { - FIXJUMP(notECJumpSource); + FIXJUMP4( notECJumpSource); } - FIXJUMP(notCodeJumpSource); + FIXJUMP4( notCodeJumpSource); } /* @@ -2414,17 +2473,23 @@ IssueTryInstructions( * [try]). */ + if (!trapZero) { + FIXJUMP4(afterBody); + } for (i=0 ; i<numHandlers ; i++) { - FIXJUMP(addrsToFix[i]); + FIXJUMP4(addrsToFix[i]); + if (noError[i] != -1) { + FIXJUMP4(noError[i]); + } } + TclStackFree(interp, noError); TclStackFree(interp, forwardsToFix); TclStackFree(interp, addrsToFix); - envPtr->currStackDepth = savedStackDepth + 1; return TCL_OK; } static int -IssueTryFinallyInstructions( +IssueTryClausesFinallyInstructions( Tcl_Interp *interp, CompileEnv *envPtr, Tcl_Token *bodyToken, @@ -2437,8 +2502,8 @@ IssueTryFinallyInstructions( Tcl_Token *finallyToken) /* Not NULL */ { DefineLineInformation; /* TIP #280 */ - int savedStackDepth = envPtr->currStackDepth; int range, resultVar, optionsVar, i, j, len, forwardsNeedFixing = 0; + int trapZero = 0, afterBody = 0, finalOK, finalError, noFinalError; int *addrsToFix, *forwardsToFix, notCodeJumpSource, notECJumpSource; char buf[TCL_INTEGER_SPACE]; @@ -2449,6 +2514,18 @@ IssueTryFinallyInstructions( } /* + * Check if we're supposed to trap a normal TCL_OK completion of the body. + * If not, we can handle that case much more efficiently. + */ + + for (i=0 ; i<numHandlers ; i++) { + if (matchCodes[i] == 0) { + trapZero = 1; + break; + } + } + + /* * Compile the body, trapping any error in it so that we can trap on it * (if any trap matches) and run a finally clause. */ @@ -2456,12 +2533,22 @@ IssueTryFinallyInstructions( range = TclCreateExceptRange(CATCH_EXCEPTION_RANGE, envPtr); OP4( BEGIN_CATCH4, range); ExceptionRangeStarts(envPtr, range); - envPtr->currStackDepth = savedStackDepth; BODY( bodyToken, 1); ExceptionRangeEnds(envPtr, range); - PUSH( "0"); - OP4( REVERSE, 2); - OP1( JUMP1, 4); + if (!trapZero) { + OP( END_CATCH); + STORE( resultVar); + OP( POP); + PUSH( "-level 0 -code 0"); + STORE( optionsVar); + OP( POP); + JUMP4( JUMP, afterBody); + } else { + PUSH( "0"); + OP4( REVERSE, 2); + OP1( JUMP1, 4); + TclAdjustStackDepth(-2, envPtr); + } ExceptionRangeTarget(envPtr, range, catchOffset); OP( PUSH_RETURN_CODE); OP( PUSH_RESULT); @@ -2471,163 +2558,178 @@ IssueTryFinallyInstructions( OP( POP); STORE( resultVar); OP( POP); - envPtr->currStackDepth = savedStackDepth + 1; /* * Now we handle all the registered 'on' and 'trap' handlers in order. + * + * Slight overallocation, but reduces size of this function. */ - if (numHandlers) { - /* - * Slight overallocation, but reduces size of this function. - */ - - addrsToFix = TclStackAlloc(interp, sizeof(int)*numHandlers); - forwardsToFix = TclStackAlloc(interp, sizeof(int)*numHandlers); - - for (i=0 ; i<numHandlers ; i++) { - sprintf(buf, "%d", matchCodes[i]); - OP( DUP); - PushLiteral(envPtr, buf, strlen(buf)); - OP( EQ); - JUMP(notCodeJumpSource, JUMP_FALSE4); - if (matchClauses[i]) { - const char *p; - Tcl_ListObjLength(NULL, matchClauses[i], &len); + addrsToFix = TclStackAlloc(interp, sizeof(int)*numHandlers); + forwardsToFix = TclStackAlloc(interp, sizeof(int)*numHandlers); - /* - * Match the errorcode according to try/trap rules. - */ + for (i=0 ; i<numHandlers ; i++) { + int noTrapError, trapError; + const char *p; - LOAD( optionsVar); - PUSH( "-errorcode"); - OP4( DICT_GET, 1); - TclAdjustStackDepth(-1, envPtr); - OP44( LIST_RANGE_IMM, 0, len-1); - p = Tcl_GetStringFromObj(matchClauses[i], &len); - PushLiteral(envPtr, p, len); - OP( STR_EQ); - JUMP(notECJumpSource, JUMP_FALSE4); - } else { - notECJumpSource = -1; /* LINT */ - } + sprintf(buf, "%d", matchCodes[i]); + OP( DUP); + PushLiteral(envPtr, buf, strlen(buf)); + OP( EQ); + JUMP4( JUMP_FALSE, notCodeJumpSource); + if (matchClauses[i]) { + Tcl_ListObjLength(NULL, matchClauses[i], &len); /* - * There is a finally clause, so we need a fairly complex sequence - * of instructions to deal with an on/trap handler because we must - * call the finally handler *and* we need to substitute the result - * from a failed trap for the result from the main script. + * Match the errorcode according to try/trap rules. */ - if (resultVars[i] >= 0 || handlerTokens[i]) { - range = TclCreateExceptRange(CATCH_EXCEPTION_RANGE, envPtr); - OP4( BEGIN_CATCH4, range); - ExceptionRangeStarts(envPtr, range); - } - if (resultVars[i] >= 0) { - LOAD( resultVar); - STORE( resultVars[i]); - OP( POP); - if (optionVars[i] >= 0) { - LOAD( optionsVar); - STORE( optionVars[i]); - OP( POP); - } + LOAD( optionsVar); + PUSH( "-errorcode"); + OP4( DICT_GET, 1); + TclAdjustStackDepth(-1, envPtr); + OP44( LIST_RANGE_IMM, 0, len-1); + p = Tcl_GetStringFromObj(matchClauses[i], &len); + PushLiteral(envPtr, p, len); + OP( STR_EQ); + JUMP4( JUMP_FALSE, notECJumpSource); + } else { + notECJumpSource = -1; /* LINT */ + } + OP( POP); - if (!handlerTokens[i]) { - /* - * No handler. Will not be the last handler (that is a - * condition that is checked by the caller). Chain to the - * next one. - */ + /* + * There is a finally clause, so we need a fairly complex sequence of + * instructions to deal with an on/trap handler because we must call + * the finally handler *and* we need to substitute the result from a + * failed trap for the result from the main script. + */ - ExceptionRangeEnds(envPtr, range); - OP( END_CATCH); - forwardsNeedFixing = 1; - JUMP(forwardsToFix[i], JUMP4); - goto finishTrapCatchHandling; - } - } else if (!handlerTokens[i]) { + if (resultVars[i] >= 0 || handlerTokens[i]) { + range = TclCreateExceptRange(CATCH_EXCEPTION_RANGE, envPtr); + OP4( BEGIN_CATCH4, range); + ExceptionRangeStarts(envPtr, range); + } + if (resultVars[i] >= 0) { + LOAD( resultVar); + STORE( resultVars[i]); + OP( POP); + if (optionVars[i] >= 0) { + LOAD( optionsVar); + STORE( optionVars[i]); + OP( POP); + } + + if (!handlerTokens[i]) { /* - * No handler. Will not be the last handler (that condition is - * checked by the caller). Chain to the next one. + * No handler. Will not be the last handler (that is a + * condition that is checked by the caller). Chain to the next + * one. */ + ExceptionRangeEnds(envPtr, range); + OP( END_CATCH); forwardsNeedFixing = 1; - JUMP(forwardsToFix[i], JUMP4); - goto endOfThisArm; + JUMP4( JUMP, forwardsToFix[i]); + goto finishTrapCatchHandling; } - + } else if (!handlerTokens[i]) { /* - * Got a handler. Make sure that any pending patch-up actions from - * previous unprocessed handlers are dealt with now that we know - * where they are to jump to. + * No handler. Will not be the last handler (that condition is + * checked by the caller). Chain to the next one. */ - if (forwardsNeedFixing) { - forwardsNeedFixing = 0; - OP1( JUMP1, 7); - for (j=0 ; j<i ; j++) { - if (forwardsToFix[j] == -1) { - continue; - } - FIXJUMP(forwardsToFix[j]); - forwardsToFix[j] = -1; - } - OP4( BEGIN_CATCH4, range); - } - envPtr->currStackDepth = savedStackDepth; - BODY( handlerTokens[i], 5+i*4); - ExceptionRangeEnds(envPtr, range); - OP( PUSH_RETURN_OPTIONS); - OP4( REVERSE, 2); - OP1( JUMP1, 4); - forwardsToFix[i] = -1; - - /* - * Error in handler or setting of variables; replace the stored - * exception with the new one. Note that we only push this if we - * have either a body or some variable setting here. Otherwise - * this code is unreachable. - */ + forwardsNeedFixing = 1; + JUMP4( JUMP, forwardsToFix[i]); + goto endOfThisArm; + } - finishTrapCatchHandling: - ExceptionRangeTarget(envPtr, range, catchOffset); - OP( PUSH_RETURN_OPTIONS); - OP( PUSH_RESULT); - OP( END_CATCH); - STORE( resultVar); - OP( POP); - STORE( optionsVar); - OP( POP); + /* + * Got a handler. Make sure that any pending patch-up actions from + * previous unprocessed handlers are dealt with now that we know where + * they are to jump to. + */ - endOfThisArm: - if (i+1 < numHandlers) { - JUMP(addrsToFix[i], JUMP4); - } - if (matchClauses[i]) { - FIXJUMP(notECJumpSource); + if (forwardsNeedFixing) { + forwardsNeedFixing = 0; + OP1( JUMP1, 7); + for (j=0 ; j<i ; j++) { + if (forwardsToFix[j] == -1) { + continue; + } + FIXJUMP4( forwardsToFix[j]); + forwardsToFix[j] = -1; } - FIXJUMP(notCodeJumpSource); + OP4( BEGIN_CATCH4, range); } + BODY( handlerTokens[i], 5+i*4); + ExceptionRangeEnds(envPtr, range); + PUSH( "0"); + OP( PUSH_RETURN_OPTIONS); + OP4( REVERSE, 3); + OP1( JUMP1, 5); + TclAdjustStackDepth(-3, envPtr); + forwardsToFix[i] = -1; /* - * Fix all the jumps from taken clauses to here (the start of the - * finally clause). + * Error in handler or setting of variables; replace the stored + * exception with the new one. Note that we only push this if we have + * either a body or some variable setting here. Otherwise this code is + * unreachable. */ - for (i=0 ; i<numHandlers-1 ; i++) { - FIXJUMP(addrsToFix[i]); + finishTrapCatchHandling: + ExceptionRangeTarget(envPtr, range, catchOffset); + OP( PUSH_RETURN_OPTIONS); + OP( PUSH_RETURN_CODE); + OP( PUSH_RESULT); + OP( END_CATCH); + STORE( resultVar); + OP( POP); + PUSH( "1"); + OP( EQ); + JUMP1( JUMP_FALSE, noTrapError); + LOAD( optionsVar); + PUSH( "-during"); + OP4( REVERSE, 3); + STORE( optionsVar); + OP( POP); + OP44( DICT_SET, 1, optionsVar); + TclAdjustStackDepth(-1, envPtr); + JUMP1( JUMP, trapError); + FIXJUMP1( noTrapError); + STORE( optionsVar); + FIXJUMP1( trapError); + /* Skip POP at end; can clean up with subsequent POP */ + if (i+1 < numHandlers) { + OP( POP); + } else { + TclAdjustStackDepth(-1, envPtr); + } + + endOfThisArm: + if (i+1 < numHandlers) { + JUMP4( JUMP, addrsToFix[i]); + } + TclAdjustStackDepth(1, envPtr); + if (matchClauses[i]) { + FIXJUMP4( notECJumpSource); } - TclStackFree(interp, forwardsToFix); - TclStackFree(interp, addrsToFix); + FIXJUMP4( notCodeJumpSource); } /* - * Drop the result code. + * Drop the result code, and fix all the jumps from taken clauses - which + * drop the result code as their first action - to point straight after + * (i.e., to the start of the finally clause). */ OP( POP); + for (i=0 ; i<numHandlers-1 ; i++) { + FIXJUMP4( addrsToFix[i]); + } + TclStackFree(interp, forwardsToFix); + TclStackFree(interp, addrsToFix); /* * Process the finally clause (at last!) Note that we do not wrap this in @@ -2637,16 +2739,106 @@ IssueTryFinallyInstructions( * next command (or some inter-command manipulation). */ - envPtr->currStackDepth = savedStackDepth; + if (!trapZero) { + FIXJUMP4( afterBody); + } + range = TclCreateExceptRange(CATCH_EXCEPTION_RANGE, envPtr); + OP4( BEGIN_CATCH4, range); + ExceptionRangeStarts(envPtr, range); BODY( finallyToken, 3 + 4*numHandlers); + ExceptionRangeEnds(envPtr, range); + OP( END_CATCH); + OP( POP); + JUMP1( JUMP, finalOK); + ExceptionRangeTarget(envPtr, range, catchOffset); + OP( PUSH_RESULT); + OP( PUSH_RETURN_OPTIONS); + OP( PUSH_RETURN_CODE); + OP( END_CATCH); + PUSH( "1"); + OP( EQ); + JUMP1( JUMP_FALSE, noFinalError); + LOAD( optionsVar); + PUSH( "-during"); + OP4( REVERSE, 3); + STORE( optionsVar); + OP( POP); + OP44( DICT_SET, 1, optionsVar); + TclAdjustStackDepth(-1, envPtr); + OP( POP); + JUMP1( JUMP, finalError); + TclAdjustStackDepth(1, envPtr); + FIXJUMP1( noFinalError); + STORE( optionsVar); OP( POP); + FIXJUMP1( finalError); + STORE( resultVar); + OP( POP); + FIXJUMP1( finalOK); LOAD( optionsVar); LOAD( resultVar); OP( RETURN_STK); - envPtr->currStackDepth = savedStackDepth + 1; return TCL_OK; } + +static int +IssueTryFinallyInstructions( + Tcl_Interp *interp, + CompileEnv *envPtr, + Tcl_Token *bodyToken, + Tcl_Token *finallyToken) +{ + DefineLineInformation; /* TIP #280 */ + int range, jumpOK, jumpSplice; + + /* + * Note that this one is simple enough that we can issue it without + * needing a local variable table, making it a universal compilation. + */ + + range = TclCreateExceptRange(CATCH_EXCEPTION_RANGE, envPtr); + OP4( BEGIN_CATCH4, range); + ExceptionRangeStarts(envPtr, range); + BODY( bodyToken, 1); + ExceptionRangeEnds(envPtr, range); + OP1( JUMP1, 3); + TclAdjustStackDepth(-1, envPtr); + ExceptionRangeTarget(envPtr, range, catchOffset); + OP( PUSH_RESULT); + OP( PUSH_RETURN_OPTIONS); + OP( END_CATCH); + + range = TclCreateExceptRange(CATCH_EXCEPTION_RANGE, envPtr); + OP4( BEGIN_CATCH4, range); + ExceptionRangeStarts(envPtr, range); + BODY( finallyToken, 3); + ExceptionRangeEnds(envPtr, range); + OP( END_CATCH); + OP( POP); + JUMP1( JUMP, jumpOK); + ExceptionRangeTarget(envPtr, range, catchOffset); + OP( PUSH_RESULT); + OP( PUSH_RETURN_OPTIONS); + OP( PUSH_RETURN_CODE); + OP( END_CATCH); + PUSH( "1"); + OP( EQ); + JUMP1( JUMP_FALSE, jumpSplice); + PUSH( "-during"); + OP4( OVER, 3); + OP4( LIST, 2); + OP( LIST_CONCAT); + FIXJUMP1( jumpSplice); + OP4( REVERSE, 4); + OP( POP); + OP( POP); + OP1( JUMP1, 7); + FIXJUMP1( jumpOK); + OP4( REVERSE, 2); + OP( RETURN_STK); + return TCL_OK; +} /* *---------------------------------------------------------------------- |