/* * tclExecute.c -- * * This file contains procedures that execute byte-compiled Tcl commands. * * Copyright (c) 1996-1997 Sun Microsystems, Inc. * Copyright (c) 1998-2000 by Scriptics Corporation. * Copyright (c) 2001 by Kevin B. Kenny. All rights reserved. * Copyright (c) 2002-2010 by Miguel Sofer. * Copyright (c) 2005-2007 by Donal K. Fellows. * Copyright (c) 2007 Daniel A. Steffen * Copyright (c) 2006-2008 by Joe Mistachkin. All rights reserved. * * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. */ #include "tclInt.h" #include "tclCompile.h" #include "tclOOInt.h" #include "tommath.h" #include #include /* * Hack to determine whether we may expect IEEE floating point. The hack is * formally incorrect in that non-IEEE platforms might have the same precision * and range, but VAX, IBM, and Cray do not; are there any other floating * point units that we might care about? */ #if (FLT_RADIX == 2) && (DBL_MANT_DIG == 53) && (DBL_MAX_EXP == 1024) #define IEEE_FLOATING_POINT #endif /* * A counter that is used to work out when the bytecode engine should call * Tcl_AsyncReady() to see whether there is a signal that needs handling, and * other expensive periodic operations. */ #ifndef ASYNC_CHECK_COUNT # define ASYNC_CHECK_COUNT 64 #endif /* !ASYNC_CHECK_COUNT */ /* * Boolean flag indicating whether the Tcl bytecode interpreter has been * initialized. */ static int execInitialized = 0; TCL_DECLARE_MUTEX(execMutex) static int cachedInExit = 0; #ifdef TCL_COMPILE_DEBUG /* * Variable that controls whether execution tracing is enabled and, if so, * what level of tracing is desired: * 0: no execution tracing * 1: trace invocations of Tcl procs only * 2: trace invocations of all (not compiled away) commands * 3: display each instruction executed * This variable is linked to the Tcl variable "tcl_traceExec". */ int tclTraceExec = 0; #endif /* * Mapping from expression instruction opcodes to strings; used for error * messages. Note that these entries must match the order and number of the * expression opcodes (e.g., INST_LOR) in tclCompile.h. * * Does not include the string for INST_EXPON (and beyond), as that is * disjoint for backward-compatability reasons. */ static const char *const operatorStrings[] = { "||", "&&", "|", "^", "&", "==", "!=", "<", ">", "<=", ">=", "<<", ">>", "+", "-", "*", "/", "%", "+", "-", "~", "!" }; /* * Mapping from Tcl result codes to strings; used for error and debugging * messages. */ #ifdef TCL_COMPILE_DEBUG static const char *const resultStrings[] = { "TCL_OK", "TCL_ERROR", "TCL_RETURN", "TCL_BREAK", "TCL_CONTINUE" }; #endif /* * These are used by evalstats to monitor object usage in Tcl. */ #ifdef TCL_COMPILE_STATS long tclObjsAlloced = 0; long tclObjsFreed = 0; long tclObjsShared[TCL_MAX_SHARED_OBJ_STATS] = { 0, 0, 0, 0, 0 }; #endif /* TCL_COMPILE_STATS */ /* * Support pre-8.5 bytecodes unless specifically requested otherwise. */ #ifndef TCL_SUPPORT_84_BYTECODE #define TCL_SUPPORT_84_BYTECODE 1 #endif #if TCL_SUPPORT_84_BYTECODE /* * We need to know the tclBuiltinFuncTable to support translation of pre-8.5 * math functions to the namespace-based ::tcl::mathfunc::op in 8.5+. */ typedef struct { const char *name; /* Name of function. */ int numArgs; /* Number of arguments for function. */ } BuiltinFunc; /* * Table describing the built-in math functions. Entries in this table are * indexed by the values of the INST_CALL_BUILTIN_FUNC instruction's * operand byte. */ static BuiltinFunc const tclBuiltinFuncTable[] = { {"acos", 1}, {"asin", 1}, {"atan", 1}, {"atan2", 2}, {"ceil", 1}, {"cos", 1}, {"cosh", 1}, {"exp", 1}, {"floor", 1}, {"fmod", 2}, {"hypot", 2}, {"log", 1}, {"log10", 1}, {"pow", 2}, {"sin", 1}, {"sinh", 1}, {"sqrt", 1}, {"tan", 1}, {"tanh", 1}, {"abs", 1}, {"double", 1}, {"int", 1}, {"rand", 0}, {"round", 1}, {"srand", 1}, {"wide", 1}, {NULL, 0}, }; #define LAST_BUILTIN_FUNC 25 #endif /* * NR_TEBC * Helpers for NR - non-recursive calls to TEBC * Minimal data required to fully reconstruct the execution state. */ typedef struct TEBCdata { ByteCode *codePtr; /* Constant until the BC returns */ /* -----------------------------------------*/ ptrdiff_t *catchTop; /* These fields are used on return TO this */ Tcl_Obj *auxObjList; /* this level: they record the state when a */ CmdFrame cmdFrame; /* new codePtr was received for NR */ /* execution. */ void *stack[1]; /* Start of the actual combined catch and obj * stacks; the struct will be expanded as * necessary */ } TEBCdata; #define TEBC_YIELD() \ do { \ esPtr->tosPtr = tosPtr; \ TclNRAddCallback(interp, TEBCresume, \ TD, pc, INT2PTR(cleanup), NULL); \ } while (0) #define TEBC_DATA_DIG() \ do { \ tosPtr = esPtr->tosPtr; \ } while (0) #define PUSH_TAUX_OBJ(objPtr) \ do { \ if (auxObjList) { \ objPtr->length += auxObjList->length; \ } \ objPtr->internalRep.twoPtrValue.ptr1 = auxObjList; \ auxObjList = objPtr; \ } while (0) #define POP_TAUX_OBJ() \ do { \ tmpPtr = auxObjList; \ auxObjList = tmpPtr->internalRep.twoPtrValue.ptr1; \ Tcl_DecrRefCount(tmpPtr); \ } while (0) /* * These variable-access macros have to coincide with those in tclVar.c */ #define VarHashGetValue(hPtr) \ ((Var *) ((char *)hPtr - TclOffset(VarInHash, entry))) static inline Var * VarHashCreateVar( TclVarHashTable *tablePtr, Tcl_Obj *key, int *newPtr) { Tcl_HashEntry *hPtr = Tcl_CreateHashEntry(&tablePtr->table, key, newPtr); if (!hPtr) { return NULL; } return VarHashGetValue(hPtr); } #define VarHashFindVar(tablePtr, key) \ VarHashCreateVar((tablePtr), (key), NULL) /* * The new macro for ending an instruction; note that a reasonable C-optimiser * will resolve all branches at compile time. (result) is always a constant; * the macro NEXT_INST_F handles constant (nCleanup), NEXT_INST_V is resolved * at runtime for variable (nCleanup). * * ARGUMENTS: * pcAdjustment: how much to increment pc * nCleanup: how many objects to remove from the stack * resultHandling: 0 indicates no object should be pushed on the stack; * otherwise, push objResultPtr. If (result < 0), objResultPtr already * has the correct reference count. * * We use the new compile-time assertions to check that nCleanup is constant * and within range. */ /* Verify the stack depth, only when no expansion is in progress */ #ifdef TCL_COMPILE_DEBUG #define CHECK_STACK() \ do { \ ValidatePcAndStackTop(codePtr, pc, CURR_DEPTH, \ /*checkStack*/ !(starting || auxObjList)); \ starting = 0; \ } while (0) #else #define CHECK_STACK() #endif #define NEXT_INST_F(pcAdjustment, nCleanup, resultHandling) \ do { \ TCL_CT_ASSERT((nCleanup >= 0) && (nCleanup <= 2)); \ CHECK_STACK(); \ if (nCleanup == 0) { \ if (resultHandling != 0) { \ if ((resultHandling) > 0) { \ PUSH_OBJECT(objResultPtr); \ } else { \ *(++tosPtr) = objResultPtr; \ } \ } \ pc += (pcAdjustment); \ goto cleanup0; \ } else if (resultHandling != 0) { \ if ((resultHandling) > 0) { \ Tcl_IncrRefCount(objResultPtr); \ } \ pc += (pcAdjustment); \ switch (nCleanup) { \ case 1: goto cleanup1_pushObjResultPtr; \ case 2: goto cleanup2_pushObjResultPtr; \ case 0: break; \ } \ } else { \ pc += (pcAdjustment); \ switch (nCleanup) { \ case 1: goto cleanup1; \ case 2: goto cleanup2; \ case 0: break; \ } \ } \ } while (0) #define NEXT_INST_V(pcAdjustment, nCleanup, resultHandling) \ CHECK_STACK(); \ do { \ pc += (pcAdjustment); \ cleanup = (nCleanup); \ if (resultHandling) { \ if ((resultHandling) > 0) { \ Tcl_IncrRefCount(objResultPtr); \ } \ goto cleanupV_pushObjResultPtr; \ } else { \ goto cleanupV; \ } \ } while (0) #ifndef TCL_COMPILE_DEBUG #define JUMP_PEEPHOLE_F(condition, pcAdjustment, cleanup) \ do { \ pc += (pcAdjustment); \ switch (*pc) { \ case INST_JUMP_FALSE1: \ NEXT_INST_F(((condition)? 2 : TclGetInt1AtPtr(pc+1)), (cleanup), 0); \ case INST_JUMP_TRUE1: \ NEXT_INST_F(((condition)? TclGetInt1AtPtr(pc+1) : 2), (cleanup), 0); \ case INST_JUMP_FALSE4: \ NEXT_INST_F(((condition)? 5 : TclGetInt4AtPtr(pc+1)), (cleanup), 0); \ case INST_JUMP_TRUE4: \ NEXT_INST_F(((condition)? TclGetInt4AtPtr(pc+1) : 5), (cleanup), 0); \ default: \ if ((condition) < 0) { \ TclNewIntObj(objResultPtr, -1); \ } else { \ objResultPtr = TCONST((condition) > 0); \ } \ NEXT_INST_F(0, (cleanup), 1); \ } \ } while (0) #define JUMP_PEEPHOLE_V(condition, pcAdjustment, cleanup) \ do { \ pc += (pcAdjustment); \ switch (*pc) { \ case INST_JUMP_FALSE1: \ NEXT_INST_V(((condition)? 2 : TclGetInt1AtPtr(pc+1)), (cleanup), 0); \ case INST_JUMP_TRUE1: \ NEXT_INST_V(((condition)? TclGetInt1AtPtr(pc+1) : 2), (cleanup), 0); \ case INST_JUMP_FALSE4: \ NEXT_INST_V(((condition)? 5 : TclGetInt4AtPtr(pc+1)), (cleanup), 0); \ case INST_JUMP_TRUE4: \ NEXT_INST_V(((condition)? TclGetInt4AtPtr(pc+1) : 5), (cleanup), 0); \ default: \ if ((condition) < 0) { \ TclNewIntObj(objResultPtr, -1); \ } else { \ objResultPtr = TCONST((condition) > 0); \ } \ NEXT_INST_V(0, (cleanup), 1); \ } \ } while (0) #else /* TCL_COMPILE_DEBUG */ #define JUMP_PEEPHOLE_F(condition, pcAdjustment, cleanup) \ do{ \ if ((condition) < 0) { \ TclNewIntObj(objResultPtr, -1); \ } else { \ objResultPtr = TCONST((condition) > 0); \ } \ NEXT_INST_F((pcAdjustment), (cleanup), 1); \ } while (0) #define JUMP_PEEPHOLE_V(condition, pcAdjustment, cleanup) \ do{ \ if ((condition) < 0) { \ TclNewIntObj(objResultPtr, -1); \ } else { \ objResultPtr = TCONST((condition) > 0); \ } \ NEXT_INST_V((pcAdjustment), (cleanup), 1); \ } while (0) #endif /* * Macros used to cache often-referenced Tcl evaluation stack information * in local variables. Note that a DECACHE_STACK_INFO()-CACHE_STACK_INFO() * pair must surround any call inside TclNRExecuteByteCode (and a few other * procedures that use this scheme) that could result in a recursive call * to TclNRExecuteByteCode. */ #define CACHE_STACK_INFO() \ checkInterp = 1 #define DECACHE_STACK_INFO() \ esPtr->tosPtr = tosPtr /* * Macros used to access items on the Tcl evaluation stack. PUSH_OBJECT * increments the object's ref count since it makes the stack have another * reference pointing to the object. However, POP_OBJECT does not decrement * the ref count. This is because the stack may hold the only reference to the * object, so the object would be destroyed if its ref count were decremented * before the caller had a chance to, e.g., store it in a variable. It is the * caller's responsibility to decrement the ref count when it is finished with * an object. * * WARNING! It is essential that objPtr only appear once in the PUSH_OBJECT * macro. The actual parameter might be an expression with side effects, and * this ensures that it will be executed only once. */ #define PUSH_OBJECT(objPtr) \ Tcl_IncrRefCount(*(++tosPtr) = (objPtr)) #define POP_OBJECT() *(tosPtr--) #define OBJ_AT_TOS *tosPtr #define OBJ_UNDER_TOS *(tosPtr-1) #define OBJ_AT_DEPTH(n) *(tosPtr-(n)) #define CURR_DEPTH ((ptrdiff_t) (tosPtr - initTosPtr)) #define STACK_BASE(esPtr) ((esPtr)->stackWords - 1) /* * Macros used to trace instruction execution. The macros TRACE, * TRACE_WITH_OBJ, and O2S are only used inside TclNRExecuteByteCode. O2S is * only used in TRACE* calls to get a string from an object. */ #ifdef TCL_COMPILE_DEBUG # define TRACE(a) \ while (traceInstructions) { \ fprintf(stdout, "%2d: %2d (%u) %s ", iPtr->numLevels, \ (int) CURR_DEPTH, \ (unsigned) (pc - codePtr->codeStart), \ GetOpcodeName(pc)); \ printf a; \ break; \ } # define TRACE_APPEND(a) \ while (traceInstructions) { \ printf a; \ break; \ } # define TRACE_ERROR(interp) \ TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp)))); # define TRACE_WITH_OBJ(a, objPtr) \ while (traceInstructions) { \ fprintf(stdout, "%2d: %2d (%u) %s ", iPtr->numLevels, \ (int) CURR_DEPTH, \ (unsigned) (pc - codePtr->codeStart), \ GetOpcodeName(pc)); \ printf a; \ TclPrintObject(stdout, objPtr, 30); \ fprintf(stdout, "\n"); \ break; \ } # define O2S(objPtr) \ (objPtr ? TclGetString(objPtr) : "") #else /* !TCL_COMPILE_DEBUG */ # define TRACE(a) # define TRACE_APPEND(a) # define TRACE_ERROR(interp) # define TRACE_WITH_OBJ(a, objPtr) # define O2S(objPtr) #endif /* TCL_COMPILE_DEBUG */ /* * DTrace instruction probe macros. */ #define TCL_DTRACE_INST_NEXT() \ do { \ if (TCL_DTRACE_INST_DONE_ENABLED()) { \ if (curInstName) { \ TCL_DTRACE_INST_DONE(curInstName, (int) CURR_DEPTH, \ tosPtr); \ } \ curInstName = tclInstructionTable[*pc].name; \ if (TCL_DTRACE_INST_START_ENABLED()) { \ TCL_DTRACE_INST_START(curInstName, (int) CURR_DEPTH, \ tosPtr); \ } \ } else if (TCL_DTRACE_INST_START_ENABLED()) { \ TCL_DTRACE_INST_START(tclInstructionTable[*pc].name, \ (int) CURR_DEPTH, tosPtr); \ } \ } while (0) #define TCL_DTRACE_INST_LAST() \ do { \ if (TCL_DTRACE_INST_DONE_ENABLED() && curInstName) { \ TCL_DTRACE_INST_DONE(curInstName, (int) CURR_DEPTH, tosPtr);\ } \ } while (0) /* * Macro used in this file to save a function call for common uses of * TclGetNumberFromObj(). The ANSI C "prototype" is: * * MODULE_SCOPE int GetNumberFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr, * ClientData *ptrPtr, int *tPtr); */ #define GetNumberFromObj(interp, objPtr, ptrPtr, tPtr) \ (((objPtr)->typePtr == &tclIntType) \ ? (*(tPtr) = TCL_NUMBER_WIDE, \ *(ptrPtr) = (ClientData) \ (&((objPtr)->internalRep.wideValue)), TCL_OK) : \ ((objPtr)->typePtr == &tclDoubleType) \ ? (((TclIsNaN((objPtr)->internalRep.doubleValue)) \ ? (*(tPtr) = TCL_NUMBER_NAN) \ : (*(tPtr) = TCL_NUMBER_DOUBLE)), \ *(ptrPtr) = (ClientData) \ (&((objPtr)->internalRep.doubleValue)), TCL_OK) : \ (((objPtr)->bytes != NULL) && ((objPtr)->length == 0)) \ ? TCL_ERROR : \ TclGetNumberFromObj((interp), (objPtr), (ptrPtr), (tPtr))) /* * Macro used to make the check for type overflow more mnemonic. This works by * comparing sign bits; the rest of the word is irrelevant. The ANSI C * "prototype" (where inttype_t is any integer type) is: * * MODULE_SCOPE int Overflowing(inttype_t a, inttype_t b, inttype_t sum); * * Check first the condition most likely to fail in usual code (at least for * usage in [incr]: do the first summand and the sum have != signs? */ #define Overflowing(a,b,sum) ((((a)^(sum)) < 0) && (((a)^(b)) >= 0)) /* * Macro for checking whether the type is NaN, used when we're thinking about * throwing an error for supplying a non-number number. */ #ifndef ACCEPT_NAN #define IsErroringNaNType(type) ((type) == TCL_NUMBER_NAN) #else #define IsErroringNaNType(type) 0 #endif /* * Auxiliary tables used to compute powers of small integers. */ /* * Maximum base that, when raised to powers 2, 3, ..., 16, fits in a * Tcl_WideInt. */ static const Tcl_WideInt MaxBase64[] = { (Tcl_WideInt)46340*65536+62259, /* 3037000499 == isqrt(2**63-1) */ (Tcl_WideInt)2097151, (Tcl_WideInt)55108, (Tcl_WideInt)6208, (Tcl_WideInt)1448, (Tcl_WideInt)511, (Tcl_WideInt)234, (Tcl_WideInt)127, (Tcl_WideInt)78, (Tcl_WideInt)52, (Tcl_WideInt)38, (Tcl_WideInt)28, (Tcl_WideInt)22, (Tcl_WideInt)18, (Tcl_WideInt)15 }; static const size_t MaxBase64Size = sizeof(MaxBase64)/sizeof(Tcl_WideInt); /* * Table giving 3, 4, ..., 13 raised to powers greater than 16 when the * results fit in a 64-bit signed integer. */ static const unsigned short Exp64Index[] = { 0, 23, 38, 49, 57, 63, 67, 70, 72, 74, 75, 76 }; static const size_t Exp64IndexSize = sizeof(Exp64Index) / sizeof(unsigned short); static const Tcl_WideInt Exp64Value[] = { (Tcl_WideInt)243*243*243*3*3, (Tcl_WideInt)243*243*243*3*3*3, (Tcl_WideInt)243*243*243*3*3*3*3, (Tcl_WideInt)243*243*243*243, (Tcl_WideInt)243*243*243*243*3, (Tcl_WideInt)243*243*243*243*3*3, (Tcl_WideInt)243*243*243*243*3*3*3, (Tcl_WideInt)243*243*243*243*3*3*3*3, (Tcl_WideInt)243*243*243*243*243, (Tcl_WideInt)243*243*243*243*243*3, (Tcl_WideInt)243*243*243*243*243*3*3, (Tcl_WideInt)243*243*243*243*243*3*3*3, (Tcl_WideInt)243*243*243*243*243*3*3*3*3, (Tcl_WideInt)243*243*243*243*243*243, (Tcl_WideInt)243*243*243*243*243*243*3, (Tcl_WideInt)243*243*243*243*243*243*3*3, (Tcl_WideInt)243*243*243*243*243*243*3*3*3, (Tcl_WideInt)243*243*243*243*243*243*3*3*3*3, (Tcl_WideInt)243*243*243*243*243*243*243, (Tcl_WideInt)243*243*243*243*243*243*243*3, (Tcl_WideInt)243*243*243*243*243*243*243*3*3, (Tcl_WideInt)243*243*243*243*243*243*243*3*3*3, (Tcl_WideInt)243*243*243*243*243*243*243*3*3*3*3, (Tcl_WideInt)1024*1024*1024*4*4, (Tcl_WideInt)1024*1024*1024*4*4*4, (Tcl_WideInt)1024*1024*1024*4*4*4*4, (Tcl_WideInt)1024*1024*1024*1024, (Tcl_WideInt)1024*1024*1024*1024*4, (Tcl_WideInt)1024*1024*1024*1024*4*4, (Tcl_WideInt)1024*1024*1024*1024*4*4*4, (Tcl_WideInt)1024*1024*1024*1024*4*4*4*4, (Tcl_WideInt)1024*1024*1024*1024*1024, (Tcl_WideInt)1024*1024*1024*1024*1024*4, (Tcl_WideInt)1024*1024*1024*1024*1024*4*4, (Tcl_WideInt)1024*1024*1024*1024*1024*4*4*4, (Tcl_WideInt)1024*1024*1024*1024*1024*4*4*4*4, (Tcl_WideInt)1024*1024*1024*1024*1024*1024, (Tcl_WideInt)1024*1024*1024*1024*1024*1024*4, (Tcl_WideInt)3125*3125*3125*5*5, (Tcl_WideInt)3125*3125*3125*5*5*5, (Tcl_WideInt)3125*3125*3125*5*5*5*5, (Tcl_WideInt)3125*3125*3125*3125, (Tcl_WideInt)3125*3125*3125*3125*5, (Tcl_WideInt)3125*3125*3125*3125*5*5, (Tcl_WideInt)3125*3125*3125*3125*5*5*5, (Tcl_WideInt)3125*3125*3125*3125*5*5*5*5, (Tcl_WideInt)3125*3125*3125*3125*3125, (Tcl_WideInt)3125*3125*3125*3125*3125*5, (Tcl_WideInt)3125*3125*3125*3125*3125*5*5, (Tcl_WideInt)7776*7776*7776*6*6, (Tcl_WideInt)7776*7776*7776*6*6*6, (Tcl_WideInt)7776*7776*7776*6*6*6*6, (Tcl_WideInt)7776*7776*7776*7776, (Tcl_WideInt)7776*7776*7776*7776*6, (Tcl_WideInt)7776*7776*7776*7776*6*6, (Tcl_WideInt)7776*7776*7776*7776*6*6*6, (Tcl_WideInt)7776*7776*7776*7776*6*6*6*6, (Tcl_WideInt)16807*16807*16807*7*7, (Tcl_WideInt)16807*16807*16807*7*7*7, (Tcl_WideInt)16807*16807*16807*7*7*7*7, (Tcl_WideInt)16807*16807*16807*16807, (Tcl_WideInt)16807*16807*16807*16807*7, (Tcl_WideInt)16807*16807*16807*16807*7*7, (Tcl_WideInt)32768*32768*32768*8*8, (Tcl_WideInt)32768*32768*32768*8*8*8, (Tcl_WideInt)32768*32768*32768*8*8*8*8, (Tcl_WideInt)32768*32768*32768*32768, (Tcl_WideInt)59049*59049*59049*9*9, (Tcl_WideInt)59049*59049*59049*9*9*9, (Tcl_WideInt)59049*59049*59049*9*9*9*9, (Tcl_WideInt)100000*100000*100000*10*10, (Tcl_WideInt)100000*100000*100000*10*10*10, (Tcl_WideInt)161051*161051*161051*11*11, (Tcl_WideInt)161051*161051*161051*11*11*11, (Tcl_WideInt)248832*248832*248832*12*12, (Tcl_WideInt)371293*371293*371293*13*13 }; static const size_t Exp64ValueSize = sizeof(Exp64Value) / sizeof(Tcl_WideInt); /* * Markers for ExecuteExtendedBinaryMathOp. */ #define DIVIDED_BY_ZERO ((Tcl_Obj *) -1) #define EXPONENT_OF_ZERO ((Tcl_Obj *) -2) #define GENERAL_ARITHMETIC_ERROR ((Tcl_Obj *) -3) /* * Declarations for local procedures to this file: */ #ifdef TCL_COMPILE_STATS static int EvalStatsCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]); #endif /* TCL_COMPILE_STATS */ #ifdef TCL_COMPILE_DEBUG static const char * GetOpcodeName(const unsigned char *pc); static void PrintByteCodeInfo(ByteCode *codePtr); static const char * StringForResultCode(int result); static void ValidatePcAndStackTop(ByteCode *codePtr, const unsigned char *pc, int stackTop, int checkStack); #endif /* TCL_COMPILE_DEBUG */ static ByteCode * CompileExprObj(Tcl_Interp *interp, Tcl_Obj *objPtr); static void DeleteExecStack(ExecStack *esPtr); static void DupExprCodeInternalRep(Tcl_Obj *srcPtr, Tcl_Obj *copyPtr); static Tcl_Obj * ExecuteExtendedBinaryMathOp(Tcl_Interp *interp, int opcode, Tcl_Obj **constants, Tcl_Obj *valuePtr, Tcl_Obj *value2Ptr); static Tcl_Obj * ExecuteExtendedUnaryMathOp(int opcode, Tcl_Obj *valuePtr); static void FreeExprCodeInternalRep(Tcl_Obj *objPtr); static ExceptionRange * GetExceptRangeForPc(const unsigned char *pc, int searchMode, ByteCode *codePtr); static const char * GetSrcInfoForPc(const unsigned char *pc, ByteCode *codePtr, int *lengthPtr, const unsigned char **pcBeg, int *cmdIdxPtr); static Tcl_Obj ** GrowEvaluationStack(ExecEnv *eePtr, int growth, int move); static void IllegalExprOperandType(Tcl_Interp *interp, const unsigned char *pc, Tcl_Obj *opndPtr); static void InitByteCodeExecution(Tcl_Interp *interp); static inline int wordSkip(void *ptr); static void ReleaseDictIterator(Tcl_Obj *objPtr); /* Useful elsewhere, make available in tclInt.h or stubs? */ static Tcl_Obj ** StackAllocWords(Tcl_Interp *interp, int numWords); static Tcl_Obj ** StackReallocWords(Tcl_Interp *interp, int numWords); static Tcl_NRPostProc CopyCallback; static Tcl_NRPostProc ExprObjCallback; static Tcl_NRPostProc FinalizeOONext; static Tcl_NRPostProc FinalizeOONextFilter; static Tcl_NRPostProc TEBCresume; /* * The structure below defines a bytecode Tcl object type to hold the * compiled bytecode for Tcl expressions. */ static const Tcl_ObjType exprCodeType = { "exprcode", FreeExprCodeInternalRep, /* freeIntRepProc */ DupExprCodeInternalRep, /* dupIntRepProc */ NULL, /* updateStringProc */ NULL /* setFromAnyProc */ }; /* * Custom object type only used in this file; values of its type should never * be seen by user scripts. */ static const Tcl_ObjType dictIteratorType = { "dictIterator", ReleaseDictIterator, NULL, NULL, NULL }; /* *---------------------------------------------------------------------- * * ReleaseDictIterator -- * * This takes apart a dictionary iterator that is stored in the given Tcl * object. * * Results: * None. * * Side effects: * Deallocates memory, marks the object as being untyped. * *---------------------------------------------------------------------- */ static void ReleaseDictIterator( Tcl_Obj *objPtr) { Tcl_DictSearch *searchPtr; Tcl_Obj *dictPtr; /* * First kill the search, and then release the reference to the dictionary * that we were holding. */ searchPtr = objPtr->internalRep.twoPtrValue.ptr1; Tcl_DictObjDone(searchPtr); ckfree(searchPtr); dictPtr = objPtr->internalRep.twoPtrValue.ptr2; TclDecrRefCount(dictPtr); objPtr->typePtr = NULL; } /* *---------------------------------------------------------------------- * * InitByteCodeExecution -- * * This procedure is called once to initialize the Tcl bytecode * interpreter. * * Results: * None. * * Side effects: * This procedure initializes the array of instruction names. If * compiling with the TCL_COMPILE_STATS flag, it initializes the array * that counts the executions of each instruction and it creates the * "evalstats" command. It also establishes the link between the Tcl * "tcl_traceExec" and C "tclTraceExec" variables. * *---------------------------------------------------------------------- */ static void InitByteCodeExecution( Tcl_Interp *interp) /* Interpreter for which the Tcl variable * "tcl_traceExec" is linked to control * instruction tracing. */ { #ifdef TCL_COMPILE_DEBUG if (Tcl_LinkVar(interp, "tcl_traceExec", (char *) &tclTraceExec, TCL_LINK_INT) != TCL_OK) { Tcl_Panic("InitByteCodeExecution: can't create link for tcl_traceExec variable"); } #endif #ifdef TCL_COMPILE_STATS Tcl_CreateObjCommand(interp, "evalstats", EvalStatsCmd, NULL, NULL); #endif /* TCL_COMPILE_STATS */ } /* *---------------------------------------------------------------------- * * TclCreateExecEnv -- * * This procedure creates a new execution environment for Tcl bytecode * execution. An ExecEnv points to a Tcl evaluation stack. An ExecEnv is * typically created once for each Tcl interpreter (Interp structure) and * recursively passed to TclNRExecuteByteCode to execute ByteCode sequences * for nested commands. * * Results: * A newly allocated ExecEnv is returned. This points to an empty * evaluation stack of the standard initial size. * * Side effects: * The bytecode interpreter is also initialized here, as this procedure * will be called before any call to TclNRExecuteByteCode. * *---------------------------------------------------------------------- */ ExecEnv * TclCreateExecEnv( Tcl_Interp *interp, /* Interpreter for which the execution * environment is being created. */ int size) /* The initial stack size, in number of words * [sizeof(Tcl_Obj*)] */ { ExecEnv *eePtr = ckalloc(sizeof(ExecEnv)); ExecStack *esPtr = ckalloc(sizeof(ExecStack) + (size_t) (size-1) * sizeof(Tcl_Obj *)); eePtr->execStackPtr = esPtr; TclNewIntObj(eePtr->constants[0], 0); Tcl_IncrRefCount(eePtr->constants[0]); TclNewIntObj(eePtr->constants[1], 1); Tcl_IncrRefCount(eePtr->constants[1]); eePtr->interp = interp; eePtr->callbackPtr = NULL; eePtr->corPtr = NULL; eePtr->rewind = 0; esPtr->prevPtr = NULL; esPtr->nextPtr = NULL; esPtr->markerPtr = NULL; esPtr->endPtr = &esPtr->stackWords[size-1]; esPtr->tosPtr = STACK_BASE(esPtr); Tcl_MutexLock(&execMutex); if (!execInitialized) { InitByteCodeExecution(interp); execInitialized = 1; } Tcl_MutexUnlock(&execMutex); return eePtr; } /* *---------------------------------------------------------------------- * * TclDeleteExecEnv -- * * Frees the storage for an ExecEnv. * * Results: * None. * * Side effects: * Storage for an ExecEnv and its contained storage (e.g. the evaluation * stack) is freed. * *---------------------------------------------------------------------- */ static void DeleteExecStack( ExecStack *esPtr) { if (esPtr->markerPtr && !cachedInExit) { Tcl_Panic("freeing an execStack which is still in use"); } if (esPtr->prevPtr) { esPtr->prevPtr->nextPtr = esPtr->nextPtr; } if (esPtr->nextPtr) { esPtr->nextPtr->prevPtr = esPtr->prevPtr; } ckfree(esPtr); } void TclDeleteExecEnv( ExecEnv *eePtr) /* Execution environment to free. */ { ExecStack *esPtr = eePtr->execStackPtr, *tmpPtr; cachedInExit = TclInExit(); /* * Delete all stacks in this exec env. */ while (esPtr->nextPtr) { esPtr = esPtr->nextPtr; } while (esPtr) { tmpPtr = esPtr; esPtr = tmpPtr->prevPtr; DeleteExecStack(tmpPtr); } TclDecrRefCount(eePtr->constants[0]); TclDecrRefCount(eePtr->constants[1]); if (eePtr->callbackPtr && !cachedInExit) { Tcl_Panic("Deleting execEnv with pending TEOV callbacks!"); } if (eePtr->corPtr && !cachedInExit) { Tcl_Panic("Deleting execEnv with existing coroutine"); } ckfree(eePtr); } /* *---------------------------------------------------------------------- * * TclFinalizeExecution -- * * Finalizes the execution environment setup so that it can be later * reinitialized. * * Results: * None. * * Side effects: * After this call, the next time TclCreateExecEnv will be called it will * call InitByteCodeExecution. * *---------------------------------------------------------------------- */ void TclFinalizeExecution(void) { Tcl_MutexLock(&execMutex); execInitialized = 0; Tcl_MutexUnlock(&execMutex); } /* * Auxiliary code to insure that GrowEvaluationStack always returns correctly * aligned memory. * * WALLOCALIGN represents the alignment reqs in words, just as TCL_ALLOCALIGN * represents the reqs in bytes. This assumes that TCL_ALLOCALIGN is a * multiple of the wordsize 'sizeof(Tcl_Obj *)'. */ #define WALLOCALIGN \ (TCL_ALLOCALIGN/sizeof(Tcl_Obj *)) /* * wordSkip computes how many words have to be skipped until the next aligned * word. Note that we are only interested in the low order bits of ptr, so * that any possible information loss in PTR2INT is of no consequence. */ static inline int wordSkip( void *ptr) { int mask = TCL_ALLOCALIGN-1; int base = PTR2INT(ptr) & mask; return (TCL_ALLOCALIGN - base)/sizeof(Tcl_Obj *); } /* * Given a marker, compute where the following aligned memory starts. */ #define MEMSTART(markerPtr) \ ((markerPtr) + wordSkip(markerPtr)) /* *---------------------------------------------------------------------- * * GrowEvaluationStack -- * * This procedure grows a Tcl evaluation stack stored in an ExecEnv, * copying over the words since the last mark if so requested. A mark is * set at the beginning of the new area when no copying is requested. * * Results: * Returns a pointer to the first usable word in the (possibly) grown * stack. * * Side effects: * The size of the evaluation stack may be grown, a marker is set * *---------------------------------------------------------------------- */ static Tcl_Obj ** GrowEvaluationStack( ExecEnv *eePtr, /* Points to the ExecEnv with an evaluation * stack to enlarge. */ int growth, /* How much larger than the current used * size. */ int move) /* 1 if move words since last marker. */ { ExecStack *esPtr = eePtr->execStackPtr, *oldPtr = NULL; int newBytes, newElems, currElems; int needed = growth - (esPtr->endPtr - esPtr->tosPtr); Tcl_Obj **markerPtr = esPtr->markerPtr, **memStart; int moveWords = 0; if (move) { if (!markerPtr) { Tcl_Panic("STACK: Reallocating with no previous alloc"); } if (needed <= 0) { return MEMSTART(markerPtr); } } else { #ifndef PURIFY Tcl_Obj **tmpMarkerPtr = esPtr->tosPtr + 1; int offset = wordSkip(tmpMarkerPtr); if (needed + offset < 0) { /* * Put a marker pointing to the previous marker in this stack, and * store it in esPtr as the current marker. Return a pointer to * the start of aligned memory. */ esPtr->markerPtr = tmpMarkerPtr; memStart = tmpMarkerPtr + offset; esPtr->tosPtr = memStart - 1; *esPtr->markerPtr = (Tcl_Obj *) markerPtr; return memStart; } #endif } /* * Reset move to hold the number of words to be moved to new stack (if * any) and growth to hold the complete stack requirements: add one for * the marker, (WALLOCALIGN-1) for the maximal possible offset. */ if (move) { moveWords = esPtr->tosPtr - MEMSTART(markerPtr) + 1; } needed = growth + moveWords + WALLOCALIGN; /* * Check if there is enough room in the next stack (if there is one, it * should be both empty and the last one!) */ if (esPtr->nextPtr) { oldPtr = esPtr; esPtr = oldPtr->nextPtr; currElems = esPtr->endPtr - STACK_BASE(esPtr); if (esPtr->markerPtr || (esPtr->tosPtr != STACK_BASE(esPtr))) { Tcl_Panic("STACK: Stack after current is in use"); } if (esPtr->nextPtr) { Tcl_Panic("STACK: Stack after current is not last"); } if (needed <= currElems) { goto newStackReady; } DeleteExecStack(esPtr); esPtr = oldPtr; } else { currElems = esPtr->endPtr - STACK_BASE(esPtr); } /* * We need to allocate a new stack! It needs to store 'growth' words, * including the elements to be copied over and the new marker. */ #ifndef PURIFY newElems = 2*currElems; while (needed > newElems) { newElems *= 2; } #else newElems = needed; #endif newBytes = sizeof(ExecStack) + (newElems-1) * sizeof(Tcl_Obj *); oldPtr = esPtr; esPtr = ckalloc(newBytes); oldPtr->nextPtr = esPtr; esPtr->prevPtr = oldPtr; esPtr->nextPtr = NULL; esPtr->endPtr = &esPtr->stackWords[newElems-1]; newStackReady: eePtr->execStackPtr = esPtr; /* * Store a NULL marker at the beginning of the stack, to indicate that * this is the first marker in this stack and that rewinding to here * should actually be a return to the previous stack. */ esPtr->stackWords[0] = NULL; esPtr->markerPtr = &esPtr->stackWords[0]; memStart = MEMSTART(esPtr->markerPtr); esPtr->tosPtr = memStart - 1; if (move) { memcpy(memStart, MEMSTART(markerPtr), moveWords*sizeof(Tcl_Obj *)); esPtr->tosPtr += moveWords; oldPtr->markerPtr = (Tcl_Obj **) *markerPtr; oldPtr->tosPtr = markerPtr-1; } /* * Free the old stack if it is now unused. */ if (!oldPtr->markerPtr) { DeleteExecStack(oldPtr); } return memStart; } /* *-------------------------------------------------------------- * * TclStackAlloc, TclStackRealloc, TclStackFree -- * * Allocate memory from the execution stack; it has to be returned later * with a call to TclStackFree. * * Results: * A pointer to the first byte allocated, or panics if the allocation did * not succeed. * * Side effects: * The execution stack may be grown. * *-------------------------------------------------------------- */ static Tcl_Obj ** StackAllocWords( Tcl_Interp *interp, int numWords) { /* * Note that GrowEvaluationStack sets a marker in the stack. This marker * is read when rewinding, e.g., by TclStackFree. */ Interp *iPtr = (Interp *) interp; ExecEnv *eePtr = iPtr->execEnvPtr; Tcl_Obj **resPtr = GrowEvaluationStack(eePtr, numWords, 0); eePtr->execStackPtr->tosPtr += numWords; return resPtr; } static Tcl_Obj ** StackReallocWords( Tcl_Interp *interp, int numWords) { Interp *iPtr = (Interp *) interp; ExecEnv *eePtr = iPtr->execEnvPtr; Tcl_Obj **resPtr = GrowEvaluationStack(eePtr, numWords, 1); eePtr->execStackPtr->tosPtr += numWords; return resPtr; } void TclStackFree( Tcl_Interp *interp, void *freePtr) { Interp *iPtr = (Interp *) interp; ExecEnv *eePtr; ExecStack *esPtr; Tcl_Obj **markerPtr, *marker; if (iPtr == NULL || iPtr->execEnvPtr == NULL) { ckfree(freePtr); return; } /* * Rewind the stack to the previous marker position. The current marker, * as set in the last call to GrowEvaluationStack, contains a pointer to * the previous marker. */ eePtr = iPtr->execEnvPtr; esPtr = eePtr->execStackPtr; markerPtr = esPtr->markerPtr; marker = *markerPtr; if ((freePtr != NULL) && (MEMSTART(markerPtr) != (Tcl_Obj **)freePtr)) { Tcl_Panic("TclStackFree: incorrect freePtr (%p != %p). Call out of sequence?", freePtr, MEMSTART(markerPtr)); } esPtr->tosPtr = markerPtr - 1; esPtr->markerPtr = (Tcl_Obj **) marker; if (marker) { return; } /* * Return to previous active stack. Note that repeated expansions or * reallocs could have generated several unused intervening stacks: free * them too. */ while (esPtr->nextPtr) { esPtr = esPtr->nextPtr; } esPtr->tosPtr = STACK_BASE(esPtr); while (esPtr->prevPtr) { ExecStack *tmpPtr = esPtr->prevPtr; if (tmpPtr->tosPtr == STACK_BASE(tmpPtr)) { DeleteExecStack(tmpPtr); } else { break; } } if (esPtr->prevPtr) { eePtr->execStackPtr = esPtr->prevPtr; #ifdef PURIFY eePtr->execStackPtr->nextPtr = NULL; DeleteExecStack(esPtr); #endif } else { eePtr->execStackPtr = esPtr; } } void * TclStackAlloc( Tcl_Interp *interp, int numBytes) { Interp *iPtr = (Interp *) interp; int numWords; if (iPtr == NULL || iPtr->execEnvPtr == NULL) { return (void *) ckalloc(numBytes); } numWords = (numBytes + (sizeof(Tcl_Obj *) - 1))/sizeof(Tcl_Obj *); return (void *) StackAllocWords(interp, numWords); } void * TclStackRealloc( Tcl_Interp *interp, void *ptr, int numBytes) { Interp *iPtr = (Interp *) interp; ExecEnv *eePtr; ExecStack *esPtr; Tcl_Obj **markerPtr; int numWords; if (iPtr == NULL || iPtr->execEnvPtr == NULL) { return (void *) ckrealloc((char *) ptr, numBytes); } eePtr = iPtr->execEnvPtr; esPtr = eePtr->execStackPtr; markerPtr = esPtr->markerPtr; if (MEMSTART(markerPtr) != (Tcl_Obj **)ptr) { Tcl_Panic("TclStackRealloc: incorrect ptr. Call out of sequence?"); } numWords = (numBytes + (sizeof(Tcl_Obj *) - 1))/sizeof(Tcl_Obj *); return (void *) StackReallocWords(interp, numWords); } /* *-------------------------------------------------------------- * * Tcl_ExprObj -- * * Evaluate an expression in a Tcl_Obj. * * Results: * A standard Tcl object result. If the result is other than TCL_OK, then * the interpreter's result contains an error message. If the result is * TCL_OK, then a pointer to the expression's result value object is * stored in resultPtrPtr. In that case, the object's ref count is * incremented to reflect the reference returned to the caller; the * caller is then responsible for the resulting object and must, for * example, decrement the ref count when it is finished with the object. * * Side effects: * Any side effects caused by subcommands in the expression, if any. The * interpreter result is not modified unless there is an error. * *-------------------------------------------------------------- */ int Tcl_ExprObj( Tcl_Interp *interp, /* Context in which to evaluate the * expression. */ register Tcl_Obj *objPtr, /* Points to Tcl object containing expression * to evaluate. */ Tcl_Obj **resultPtrPtr) /* Where the Tcl_Obj* that is the expression * result is stored if no errors occur. */ { NRE_callback *rootPtr = TOP_CB(interp); Tcl_Obj *resultPtr; TclNewObj(resultPtr); TclNRAddCallback(interp, CopyCallback, resultPtrPtr, resultPtr, NULL, NULL); Tcl_NRExprObj(interp, objPtr, resultPtr); return TclNRRunCallbacks(interp, TCL_OK, rootPtr); } static int CopyCallback( ClientData data[], Tcl_Interp *interp, int result) { Tcl_Obj **resultPtrPtr = data[0]; Tcl_Obj *resultPtr = data[1]; if (result == TCL_OK) { *resultPtrPtr = resultPtr; Tcl_IncrRefCount(resultPtr); } else { Tcl_DecrRefCount(resultPtr); } return result; } /* *-------------------------------------------------------------- * * Tcl_NRExprObj -- * * Request evaluation of the expression in a Tcl_Obj by the NR stack. * * Results: * Returns TCL_OK. * * Side effects: * Compiles objPtr as a Tcl expression and places callbacks on the * NR stack to execute the bytecode and store the result in resultPtr. * If bytecode execution raises an exception, nothing is written * to resultPtr, and the exceptional return code flows up the NR * stack. If the exception is TCL_ERROR, an error message is left * in the interp result and the interp's return options dictionary * holds additional error information too. Execution of the bytecode * may have other side effects, depending on the expression. * *-------------------------------------------------------------- */ int Tcl_NRExprObj( Tcl_Interp *interp, Tcl_Obj *objPtr, Tcl_Obj *resultPtr) { ByteCode *codePtr; Tcl_InterpState state = Tcl_SaveInterpState(interp, TCL_OK); Tcl_ResetResult(interp); codePtr = CompileExprObj(interp, objPtr); Tcl_NRAddCallback(interp, ExprObjCallback, state, resultPtr, NULL, NULL); return TclNRExecuteByteCode(interp, codePtr); } static int ExprObjCallback( ClientData data[], Tcl_Interp *interp, int result) { Tcl_InterpState state = data[0]; Tcl_Obj *resultPtr = data[1]; if (result == TCL_OK) { TclSetDuplicateObj(resultPtr, Tcl_GetObjResult(interp)); (void) Tcl_RestoreInterpState(interp, state); } else { Tcl_DiscardInterpState(state); } return result; } /* *---------------------------------------------------------------------- * * CompileExprObj -- * Compile a Tcl expression value into ByteCode. * * Results: * A (ByteCode *) is returned pointing to the resulting ByteCode. * * Side effects: * The Tcl_ObjType of objPtr is changed to the "exprcode" type, * and the ByteCode is kept in the internal rep (along with context * data for checking validity) for faster operations the next time * CompileExprObj is called on the same value. * *---------------------------------------------------------------------- */ static ByteCode * CompileExprObj( Tcl_Interp *interp, Tcl_Obj *objPtr) { Interp *iPtr = (Interp *) interp; CompileEnv compEnv; /* Compilation environment structure allocated * in frame. */ register ByteCode *codePtr = NULL; /* Tcl Internal type of bytecode. Initialized * to avoid compiler warning. */ /* * Get the expression ByteCode from the object. If it exists, make sure it * is valid in the current context. */ if (objPtr->typePtr == &exprCodeType) { Namespace *namespacePtr = iPtr->varFramePtr->nsPtr; codePtr = objPtr->internalRep.twoPtrValue.ptr1; if (((Interp *) *codePtr->interpHandle != iPtr) || (codePtr->compileEpoch != iPtr->compileEpoch) || (codePtr->nsPtr != namespacePtr) || (codePtr->nsEpoch != namespacePtr->resolverEpoch) || (codePtr->localCachePtr != iPtr->varFramePtr->localCachePtr)) { TclFreeIntRep(objPtr); } } if (objPtr->typePtr != &exprCodeType) { /* * TIP #280: No invoker (yet) - Expression compilation. */ const char *string = TclGetString(objPtr); TclInitCompileEnv(interp, &compEnv, string, objPtr->length, NULL, 0); TclCompileExpr(interp, string, objPtr->length, &compEnv, 0); /* * Successful compilation. If the expression yielded no instructions, * push an zero object as the expression's result. */ if (compEnv.codeNext == compEnv.codeStart) { TclEmitPush(TclRegisterLiteral(&compEnv, "0", 1, 0), &compEnv); } /* * Add a "done" instruction as the last instruction and change the * object into a ByteCode object. Ownership of the literal objects and * aux data items is given to the ByteCode object. */ TclEmitOpcode(INST_DONE, &compEnv); codePtr = TclInitByteCodeObj(objPtr, &exprCodeType, &compEnv); TclFreeCompileEnv(&compEnv); if (iPtr->varFramePtr->localCachePtr) { codePtr->localCachePtr = iPtr->varFramePtr->localCachePtr; codePtr->localCachePtr->refCount++; } #ifdef TCL_COMPILE_DEBUG if (tclTraceCompile == 2) { TclPrintByteCodeObj(interp, objPtr); fflush(stdout); } #endif /* TCL_COMPILE_DEBUG */ } return codePtr; } /* *---------------------------------------------------------------------- * * DupExprCodeInternalRep -- * * Part of the Tcl object type implementation for Tcl expression * bytecode. We do not copy the bytecode intrep. Instead, we return * without setting copyPtr->typePtr, so the copy is a plain string copy * of the expression value, and if it is to be used as a compiled * expression, it will just need a recompile. * * This makes sense, because with Tcl's copy-on-write practices, the * usual (only?) time Tcl_DuplicateObj() will be called is when the copy * is about to be modified, which would invalidate any copied bytecode * anyway. The only reason it might make sense to copy the bytecode is if * we had some modifying routines that operated directly on the intrep, * like we do for lists and dicts. * * Results: * None. * * Side effects: * None. * *---------------------------------------------------------------------- */ static void DupExprCodeInternalRep( Tcl_Obj *srcPtr, Tcl_Obj *copyPtr) { return; } /* *---------------------------------------------------------------------- * * FreeExprCodeInternalRep -- * * Part of the Tcl object type implementation for Tcl expression * bytecode. Frees the storage allocated to hold the internal rep, unless * ref counts indicate bytecode execution is still in progress. * * Results: * None. * * Side effects: * May free allocated memory. Leaves objPtr untyped. * *---------------------------------------------------------------------- */ static void FreeExprCodeInternalRep( Tcl_Obj *objPtr) { ByteCode *codePtr = objPtr->internalRep.twoPtrValue.ptr1; TclReleaseByteCode(codePtr); } /* *---------------------------------------------------------------------- * * TclCompileObj -- * * This procedure compiles the script contained in a Tcl_Obj. * * Results: * A pointer to the corresponding ByteCode, never NULL. * * Side effects: * The object is shimmered to bytecode type. * *---------------------------------------------------------------------- */ ByteCode * TclCompileObj( Tcl_Interp *interp, Tcl_Obj *objPtr, const CmdFrame *invoker, int word) { register Interp *iPtr = (Interp *) interp; register ByteCode *codePtr; /* Tcl Internal type of bytecode. */ Namespace *namespacePtr = iPtr->varFramePtr->nsPtr; /* * If the object is not already of tclByteCodeType, compile it (and reset * the compilation flags in the interpreter; this should be done after any * compilation). Otherwise, check that it is "fresh" enough. */ if (objPtr->typePtr == &tclByteCodeType) { /* * Make sure the Bytecode hasn't been invalidated by, e.g., someone * redefining a command with a compile procedure (this might make the * compiled code wrong). The object needs to be recompiled if it was * compiled in/for a different interpreter, or for a different * namespace, or for the same namespace but with different name * resolution rules. Precompiled objects, however, are immutable and * therefore they are not recompiled, even if the epoch has changed. * * To be pedantically correct, we should also check that the * originating procPtr is the same as the current context procPtr * (assuming one exists at all - none for global level). This code is * #def'ed out because [info body] was changed to never return a * bytecode type object, which should obviate us from the extra checks * here. */ codePtr = objPtr->internalRep.twoPtrValue.ptr1; if (((Interp *) *codePtr->interpHandle != iPtr) || (codePtr->compileEpoch != iPtr->compileEpoch) || (codePtr->nsPtr != namespacePtr) || (codePtr->nsEpoch != namespacePtr->resolverEpoch)) { if (!(codePtr->flags & TCL_BYTECODE_PRECOMPILED)) { goto recompileObj; } if ((Interp *) *codePtr->interpHandle != iPtr) { Tcl_Panic("Tcl_EvalObj: compiled script jumped interps"); } codePtr->compileEpoch = iPtr->compileEpoch; } /* * Check that any compiled locals do refer to the current proc * environment! If not, recompile. */ if (!(codePtr->flags & TCL_BYTECODE_PRECOMPILED) && (codePtr->procPtr == NULL) && (codePtr->localCachePtr != iPtr->varFramePtr->localCachePtr)){ goto recompileObj; } /* * #280. * Literal sharing fix. This part of the fix is not required by 8.4 * nor 8.5, because they eval-direct any literals, so just saving the * argument locations per command in bytecode is enough, embedded * 'eval' commands, etc. get the correct information. * * But in 8.6 all the embedded script are compiled, and the resulting * bytecode stored in the literal. Now the shared literal has bytecode * with location data for _one_ particular location this literal is * found at. If we get executed from a different location the bytecode * has to be recompiled to get the correct locations. Not doing this * will execute the saved bytecode with data for a different location, * causing 'info frame' to point to the wrong place in the sources. * * Future optimizations ... * (1) Save the location data (ExtCmdLoc) keyed by start line. In that * case we recompile once per location of the literal, but not * continously, because the moment we have all locations we do not * need to recompile any longer. * * (2) Alternative: Do not recompile, tell the execution engine the * offset between saved starting line and actual one. Then modify * the users to adjust the locations they have by this offset. * * (3) Alternative 2: Do not fully recompile, adjust just the location * information. */ if (invoker == NULL) { return codePtr; } else { Tcl_HashEntry *hePtr = Tcl_FindHashEntry(iPtr->lineBCPtr, codePtr); ExtCmdLoc *eclPtr; CmdFrame *ctxCopyPtr; int redo; if (!hePtr) { return codePtr; } eclPtr = Tcl_GetHashValue(hePtr); redo = 0; ctxCopyPtr = TclStackAlloc(interp, sizeof(CmdFrame)); *ctxCopyPtr = *invoker; if (invoker->type == TCL_LOCATION_BC) { /* * Note: Type BC => ctx.data.eval.path is not used. * ctx.data.tebc.codePtr used instead */ TclGetSrcInfoForPc(ctxCopyPtr); if (ctxCopyPtr->type == TCL_LOCATION_SOURCE) { /* * The reference made by 'TclGetSrcInfoForPc' is dead. */ Tcl_DecrRefCount(ctxCopyPtr->data.eval.path); ctxCopyPtr->data.eval.path = NULL; } } if (word < ctxCopyPtr->nline) { /* * Note: We do not care if the line[word] is -1. This is a * difference and requires a recompile (location changed from * absolute to relative, literal is used fixed and through * variable) * * Example: * test info-32.0 using literal of info-24.8 * (dict with ... vs set body ...). */ redo = ((eclPtr->type == TCL_LOCATION_SOURCE) && (eclPtr->start != ctxCopyPtr->line[word])) || ((eclPtr->type == TCL_LOCATION_BC) && (ctxCopyPtr->type == TCL_LOCATION_SOURCE)); } TclStackFree(interp, ctxCopyPtr); if (!redo) { return codePtr; } } } recompileObj: iPtr->errorLine = 1; /* * TIP #280. Remember the invoker for a moment in the interpreter * structures so that the byte code compiler can pick it up when * initializing the compilation environment, i.e. the extended location * information. */ iPtr->invokeCmdFramePtr = invoker; iPtr->invokeWord = word; TclSetByteCodeFromAny(interp, objPtr, NULL, NULL); iPtr->invokeCmdFramePtr = NULL; codePtr = objPtr->internalRep.twoPtrValue.ptr1; if (iPtr->varFramePtr->localCachePtr) { codePtr->localCachePtr = iPtr->varFramePtr->localCachePtr; codePtr->localCachePtr->refCount++; } return codePtr; } /* *---------------------------------------------------------------------- * * TclIncrObj -- * * Increment an integeral value in a Tcl_Obj by an integeral value held * in another Tcl_Obj. Caller is responsible for making sure we can * update the first object. * * Results: * TCL_ERROR if either object is non-integer, and TCL_OK otherwise. On * error, an error message is left in the interpreter (if it is not NULL, * of course). * * Side effects: * valuePtr gets the new incrmented value. * *---------------------------------------------------------------------- */ int TclIncrObj( Tcl_Interp *interp, Tcl_Obj *valuePtr, Tcl_Obj *incrPtr) { ClientData ptr1, ptr2; int type1, type2; mp_int value, incr; if (Tcl_IsShared(valuePtr)) { Tcl_Panic("%s called with shared object", "TclIncrObj"); } if (GetNumberFromObj(NULL, valuePtr, &ptr1, &type1) != TCL_OK) { /* * Produce error message (reparse?!) */ return TclGetIntFromObj(interp, valuePtr, &type1); } if (GetNumberFromObj(NULL, incrPtr, &ptr2, &type2) != TCL_OK) { /* * Produce error message (reparse?!) */ TclGetIntFromObj(interp, incrPtr, &type1); Tcl_AddErrorInfo(interp, "\n (reading increment)"); return TCL_ERROR; } if ((type1 == TCL_NUMBER_DOUBLE) || (type1 == TCL_NUMBER_NAN)) { /* * Produce error message (reparse?!) */ return TclGetIntFromObj(interp, valuePtr, &type1); } if ((type2 == TCL_NUMBER_DOUBLE) || (type2 == TCL_NUMBER_NAN)) { /* * Produce error message (reparse?!) */ TclGetIntFromObj(interp, incrPtr, &type1); Tcl_AddErrorInfo(interp, "\n (reading increment)"); return TCL_ERROR; } if ((type1 != TCL_NUMBER_BIG) && (type2 != TCL_NUMBER_BIG)) { Tcl_WideInt w1, w2, sum; TclGetWideIntFromObj(NULL, valuePtr, &w1); TclGetWideIntFromObj(NULL, incrPtr, &w2); sum = w1 + w2; /* * Check for overflow. */ if (!Overflowing(w1, w2, sum)) { TclSetIntObj(valuePtr, sum); return TCL_OK; } } Tcl_TakeBignumFromObj(interp, valuePtr, &value); Tcl_GetBignumFromObj(interp, incrPtr, &incr); mp_add(&value, &incr, &value); mp_clear(&incr); Tcl_SetBignumObj(valuePtr, &value); return TCL_OK; } /* *---------------------------------------------------------------------- * * ArgumentBCEnter -- * * This is a helper for TclNRExecuteByteCode/TEBCresume that encapsulates * a code sequence that is fairly common in the code but *not* commonly * called. * * Results: * None * * Side effects: * May register information about the bytecode in the command frame. * *---------------------------------------------------------------------- */ static void ArgumentBCEnter( Tcl_Interp *interp, ByteCode *codePtr, TEBCdata *tdPtr, const unsigned char *pc, int objc, Tcl_Obj **objv) { int cmd; if (GetSrcInfoForPc(pc, codePtr, NULL, NULL, &cmd)) { TclArgumentBCEnter(interp, objv, objc, codePtr, &tdPtr->cmdFrame, cmd, pc - codePtr->codeStart); } } /* *---------------------------------------------------------------------- * * TclNRExecuteByteCode -- * * This procedure executes the instructions of a ByteCode structure. It * returns when a "done" instruction is executed or an error occurs. * * Results: * The return value is one of the return codes defined in tcl.h (such as * TCL_OK), and interp->objResultPtr refers to a Tcl object that either * contains the result of executing the code or an error message. * * Side effects: * Almost certainly, depending on the ByteCode's instructions. * *---------------------------------------------------------------------- */ #define bcFramePtr (&TD->cmdFrame) #define initCatchTop ((ptrdiff_t *) (&TD->stack[-1])) #define initTosPtr ((Tcl_Obj **) (initCatchTop+codePtr->maxExceptDepth)) #define esPtr (iPtr->execEnvPtr->execStackPtr) int TclNRExecuteByteCode( Tcl_Interp *interp, /* Token for command interpreter. */ ByteCode *codePtr) /* The bytecode sequence to interpret. */ { Interp *iPtr = (Interp *) interp; TEBCdata *TD; int size = sizeof(TEBCdata) - 1 + (codePtr->maxStackDepth + codePtr->maxExceptDepth) * sizeof(void *); int numWords = (size + sizeof(Tcl_Obj *) - 1) / sizeof(Tcl_Obj *); TclPreserveByteCode(codePtr); /* * Reserve the stack, setup the TEBCdataPtr (TD) and CallFrame * * The execution uses a unified stack: first a TEBCdata, immediately * above it a CmdFrame, then the catch stack, then the execution stack. * * Make sure the catch stack is large enough to hold the maximum number of * catch commands that could ever be executing at the same time (this will * be no more than the exception range array's depth). Make sure the * execution stack is large enough to execute this ByteCode. */ TD = (TEBCdata *) GrowEvaluationStack(iPtr->execEnvPtr, numWords, 0); esPtr->tosPtr = initTosPtr; TD->codePtr = codePtr; TD->catchTop = initCatchTop; TD->auxObjList = NULL; /* * TIP #280: Initialize the frame. Do not push it yet: it will be pushed * every time that we call out from this TD, popped when we return to it. */ bcFramePtr->type = ((codePtr->flags & TCL_BYTECODE_PRECOMPILED) ? TCL_LOCATION_PREBC : TCL_LOCATION_BC); bcFramePtr->level = (iPtr->cmdFramePtr ? iPtr->cmdFramePtr->level+1 : 1); bcFramePtr->framePtr = iPtr->framePtr; bcFramePtr->nextPtr = iPtr->cmdFramePtr; bcFramePtr->nline = 0; bcFramePtr->line = NULL; bcFramePtr->litarg = NULL; bcFramePtr->data.tebc.codePtr = codePtr; bcFramePtr->data.tebc.pc = NULL; bcFramePtr->cmdObj = NULL; bcFramePtr->cmd = NULL; bcFramePtr->len = 0; #ifdef TCL_COMPILE_STATS iPtr->stats.numExecutions++; #endif /* * Test namespace-50.9 demonstrates the need for this call. * Use a --enable-symbols=mem bug to see. */ TclResetRewriteEnsemble(interp, 1); /* * Push the callback for bytecode execution */ TclNRAddCallback(interp, TEBCresume, TD, /* pc */ NULL, /* cleanup */ INT2PTR(0), NULL); return TCL_OK; } static int TEBCresume( ClientData data[], Tcl_Interp *interp, int result) { /* * Compiler cast directive - not a real variable. * Interp *iPtr = (Interp *) interp; */ #define iPtr ((Interp *) interp) /* * Check just the read-traced/write-traced bit of a variable. */ #define ReadTraced(varPtr) ((varPtr)->flags & VAR_TRACED_READ) #define WriteTraced(varPtr) ((varPtr)->flags & VAR_TRACED_WRITE) #define UnsetTraced(varPtr) ((varPtr)->flags & VAR_TRACED_UNSET) /* * Bottom of allocated stack holds the NR data */ /* * Constants: variables that do not change during the execution, used * sporadically: no special need for speed. */ unsigned interruptCounter = 1; /* Counter that is used to work out when to * call Tcl_AsyncReady(). This must be 1 * initially so that we call the async-check * stanza early, otherwise there are command * sequences that can make the interpreter * busy-loop without an opportunity to * recognise an interrupt. */ const char *curInstName; #ifdef TCL_COMPILE_DEBUG int traceInstructions; /* Whether we are doing instruction-level * tracing or not. */ #endif Var *compiledLocals = iPtr->varFramePtr->compiledLocals; Tcl_Obj **constants = &iPtr->execEnvPtr->constants[0]; #define LOCAL(i) (&compiledLocals[(i)]) #define TCONST(i) (constants[(i)]) /* * These macros are just meant to save some global variables that are not * used too frequently */ TEBCdata *TD = data[0]; #define auxObjList (TD->auxObjList) #define catchTop (TD->catchTop) #define codePtr (TD->codePtr) /* * Globals: variables that store state, must remain valid at all times. */ Tcl_Obj **tosPtr; /* Cached pointer to top of evaluation * stack. */ const unsigned char *pc = data[1]; /* The current program counter. */ unsigned char inst; /* The currently running instruction */ /* * Transfer variables - needed only between opcodes, but not while * executing an instruction. */ int cleanup = PTR2INT(data[2]); Tcl_Obj *objResultPtr; int checkInterp; /* Indicates when a check of interp readyness * is necessary. Set by CACHE_STACK_INFO() */ /* * Locals - variables that are used within opcodes or bounded sections of * the file (jumps between opcodes within a family). * NOTE: These are now mostly defined locally where needed. */ Tcl_Obj *objPtr, *valuePtr, *value2Ptr, *part1Ptr, *part2Ptr, *tmpPtr; Tcl_Obj **objv; int objc = 0; int opnd, length, pcAdjustment; Var *varPtr, *arrayPtr; #ifdef TCL_COMPILE_DEBUG char cmdNameBuf[21]; #endif #ifdef TCL_COMPILE_DEBUG int starting = 1; traceInstructions = (tclTraceExec == 3); #endif TEBC_DATA_DIG(); #ifdef TCL_COMPILE_DEBUG if (!pc && (tclTraceExec >= 2)) { PrintByteCodeInfo(codePtr); fprintf(stdout, " Starting stack top=%d\n", (int) CURR_DEPTH); fflush(stdout); } #endif if (!pc) { /* bytecode is starting from scratch */ checkInterp = 0; pc = codePtr->codeStart; goto cleanup0; } else { /* resume from invocation */ CACHE_STACK_INFO(); NRE_ASSERT(iPtr->cmdFramePtr == bcFramePtr); if (bcFramePtr->cmdObj) { Tcl_DecrRefCount(bcFramePtr->cmdObj); bcFramePtr->cmdObj = NULL; bcFramePtr->cmd = NULL; } iPtr->cmdFramePtr = bcFramePtr->nextPtr; if (iPtr->flags & INTERP_DEBUG_FRAME) { TclArgumentBCRelease(interp, bcFramePtr); } if (iPtr->execEnvPtr->rewind) { result = TCL_ERROR; goto abnormalReturn; } if (codePtr->flags & TCL_BYTECODE_RECOMPILE) { iPtr->flags |= ERR_ALREADY_LOGGED; codePtr->flags &= ~TCL_BYTECODE_RECOMPILE; } if (result != TCL_OK) { pc--; goto processExceptionReturn; } /* * Push the call's object result and continue execution with the next * instruction. */ TRACE_WITH_OBJ(("%u => ... after \"%.20s\": TCL_OK, result=", objc, cmdNameBuf), Tcl_GetObjResult(interp)); /* * Reset the interp's result to avoid possible duplications of large * objects [Bug 781585]. We do not call Tcl_ResetResult to avoid any * side effects caused by the resetting of errorInfo and errorCode * [Bug 804681], which are not needed here. We chose instead to * manipulate the interp's object result directly. * * Note that the result object is now in objResultPtr, it keeps the * refCount it had in its role of iPtr->objResultPtr. */ objResultPtr = Tcl_GetObjResult(interp); TclNewObj(objPtr); Tcl_IncrRefCount(objPtr); iPtr->objResultPtr = objPtr; #ifndef TCL_COMPILE_DEBUG if (*pc == INST_POP) { TclDecrRefCount(objResultPtr); NEXT_INST_V(1, cleanup, 0); } #endif NEXT_INST_V(0, cleanup, -1); } /* * Targets for standard instruction endings; unrolled for speed in the * most frequent cases (instructions that consume up to two stack * elements). * * This used to be a "for(;;)" loop, with each instruction doing its own * cleanup. */ cleanupV_pushObjResultPtr: switch (cleanup) { case 0: *(++tosPtr) = (objResultPtr); goto cleanup0; default: cleanup -= 2; while (cleanup--) { objPtr = POP_OBJECT(); TclDecrRefCount(objPtr); } case 2: cleanup2_pushObjResultPtr: objPtr = POP_OBJECT(); TclDecrRefCount(objPtr); case 1: cleanup1_pushObjResultPtr: objPtr = OBJ_AT_TOS; TclDecrRefCount(objPtr); } OBJ_AT_TOS = objResultPtr; goto cleanup0; cleanupV: switch (cleanup) { default: cleanup -= 2; while (cleanup--) { objPtr = POP_OBJECT(); TclDecrRefCount(objPtr); } case 2: cleanup2: objPtr = POP_OBJECT(); TclDecrRefCount(objPtr); case 1: cleanup1: objPtr = POP_OBJECT(); TclDecrRefCount(objPtr); case 0: /* * We really want to do nothing now, but this is needed for some * compilers (SunPro CC). */ break; } cleanup0: /* * Check for asynchronous handlers [Bug 746722]; we do the check every * ASYNC_CHECK_COUNT instructions. */ if ((--interruptCounter) == 0) { interruptCounter = ASYNC_CHECK_COUNT; DECACHE_STACK_INFO(); if (TclAsyncReady(iPtr)) { result = Tcl_AsyncInvoke(interp, result); if (result == TCL_ERROR) { CACHE_STACK_INFO(); goto gotError; } } if (TclCanceled(iPtr)) { if (Tcl_Canceled(interp, TCL_LEAVE_ERR_MSG) == TCL_ERROR) { CACHE_STACK_INFO(); goto gotError; } } if (TclLimitReady(iPtr->limit)) { if (Tcl_LimitCheck(interp) == TCL_ERROR) { CACHE_STACK_INFO(); goto gotError; } } CACHE_STACK_INFO(); } /* * These two instructions account for 26% of all instructions (according * to measurements on tclbench by Ben Vitale * [http://www.cs.toronto.edu/syslab/pubs/tcl2005-vitale-zaleski.pdf] * Resolving them before the switch reduces the cost of branch * mispredictions, seems to improve runtime by 5% to 15%, and (amazingly!) * reduces total obj size. */ inst = *pc; peepholeStart: #ifdef TCL_COMPILE_STATS iPtr->stats.instructionCount[*pc]++; #endif #ifdef TCL_COMPILE_DEBUG /* * Skip the stack depth check if an expansion is in progress. */ CHECK_STACK(); if (traceInstructions) { fprintf(stdout, "%2d: %2d ", iPtr->numLevels, (int) CURR_DEPTH); TclPrintInstruction(codePtr, pc); fflush(stdout); } #endif /* TCL_COMPILE_DEBUG */ TCL_DTRACE_INST_NEXT(); if (inst == INST_LOAD_SCALAR1) { goto instLoadScalar1; } else if (inst == INST_PUSH1) { PUSH_OBJECT(codePtr->objArrayPtr[TclGetUInt1AtPtr(pc+1)]); TRACE_WITH_OBJ(("%u => ", TclGetUInt1AtPtr(pc+1)), OBJ_AT_TOS); inst = *(pc += 2); goto peepholeStart; } else if (inst == INST_START_CMD) { /* * Peephole: do not run INST_START_CMD, just skip it */ iPtr->cmdCount += TclGetUInt4AtPtr(pc+5); if (checkInterp) { checkInterp = 0; if (((codePtr->compileEpoch != iPtr->compileEpoch) || (codePtr->nsEpoch != iPtr->varFramePtr->nsPtr->resolverEpoch)) && !(codePtr->flags & TCL_BYTECODE_PRECOMPILED)) { goto instStartCmdFailed; } } inst = *(pc += 9); goto peepholeStart; } else if (inst == INST_NOP) { #ifndef TCL_COMPILE_DEBUG while (inst == INST_NOP) #endif { inst = *++pc; } goto peepholeStart; } switch (inst) { case INST_SYNTAX: case INST_RETURN_IMM: { int code = TclGetInt4AtPtr(pc+1); int level = TclGetUInt4AtPtr(pc+5); /* * OBJ_AT_TOS is returnOpts, OBJ_UNDER_TOS is resultObjPtr. */ TRACE(("%u %u => ", code, level)); result = TclProcessReturn(interp, code, level, OBJ_AT_TOS); if (result == TCL_OK) { TRACE_APPEND(("continuing to next instruction (result=\"%.30s\")\n", O2S(objResultPtr))); NEXT_INST_F(9, 1, 0); } Tcl_SetObjResult(interp, OBJ_UNDER_TOS); if (*pc == INST_SYNTAX) { iPtr->flags &= ~ERR_ALREADY_LOGGED; } cleanup = 2; TRACE_APPEND(("\n")); goto processExceptionReturn; } case INST_RETURN_STK: TRACE(("=> ")); objResultPtr = POP_OBJECT(); result = Tcl_SetReturnOptions(interp, OBJ_AT_TOS); if (result == TCL_OK) { Tcl_DecrRefCount(OBJ_AT_TOS); OBJ_AT_TOS = objResultPtr; TRACE_APPEND(("continuing to next instruction (result=\"%.30s\")\n", O2S(objResultPtr))); NEXT_INST_F(1, 0, 0); } else if (result == TCL_ERROR) { /* * BEWARE! Must do this in this order, because an error in the * option dictionary overrides the result (and can be verified by * test). */ Tcl_SetObjResult(interp, objResultPtr); Tcl_SetReturnOptions(interp, OBJ_AT_TOS); Tcl_DecrRefCount(OBJ_AT_TOS); OBJ_AT_TOS = objResultPtr; } else { Tcl_DecrRefCount(OBJ_AT_TOS); OBJ_AT_TOS = objResultPtr; Tcl_SetObjResult(interp, objResultPtr); } cleanup = 1; TRACE_APPEND(("\n")); goto processExceptionReturn; { CoroutineData *corPtr; int yieldParameter; case INST_YIELD: corPtr = iPtr->execEnvPtr->corPtr; TRACE(("%.30s => ", O2S(OBJ_AT_TOS))); if (!corPtr) { TRACE_APPEND(("ERROR: yield outside coroutine\n")); Tcl_SetObjResult(interp, Tcl_NewStringObj( "yield can only be called in a coroutine", -1)); DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "TCL", "COROUTINE", "ILLEGAL_YIELD", NULL); CACHE_STACK_INFO(); goto gotError; } #ifdef TCL_COMPILE_DEBUG if (tclTraceExec >= 2) { if (traceInstructions) { TRACE_APPEND(("YIELD...\n")); } else { fprintf(stdout, "%d: (%u) yielding value \"%.30s\"\n", iPtr->numLevels, (unsigned)(pc - codePtr->codeStart), Tcl_GetString(OBJ_AT_TOS)); } fflush(stdout); } #endif yieldParameter = 0; Tcl_SetObjResult(interp, OBJ_AT_TOS); goto doYield; case INST_YIELD_TO_INVOKE: corPtr = iPtr->execEnvPtr->corPtr; valuePtr = OBJ_AT_TOS; if (!corPtr) { TRACE(("[%.30s] => ERROR: yield outside coroutine\n", O2S(valuePtr))); Tcl_SetObjResult(interp, Tcl_NewStringObj( "yieldto can only be called in a coroutine", -1)); DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "TCL", "COROUTINE", "ILLEGAL_YIELD", NULL); CACHE_STACK_INFO(); goto gotError; } if (((Namespace *)TclGetCurrentNamespace(interp))->flags & NS_DYING) { TRACE(("[%.30s] => ERROR: yield in deleted\n", O2S(valuePtr))); Tcl_SetObjResult(interp, Tcl_NewStringObj( "yieldto called in deleted namespace", -1)); DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "TCL", "COROUTINE", "YIELDTO_IN_DELETED", NULL); CACHE_STACK_INFO(); goto gotError; } #ifdef TCL_COMPILE_DEBUG if (tclTraceExec >= 2) { if (traceInstructions) { TRACE(("[%.30s] => YIELD...\n", O2S(valuePtr))); } else { /* FIXME: What is the right thing to trace? */ fprintf(stdout, "%d: (%u) yielding to [%.30s]\n", iPtr->numLevels, (unsigned)(pc - codePtr->codeStart), TclGetString(valuePtr)); } fflush(stdout); } #endif /* * Install a tailcall record in the caller and continue with the * yield. The yield is switched into multi-return mode (via the * 'yieldParameter'). */ Tcl_IncrRefCount(valuePtr); iPtr->execEnvPtr = corPtr->callerEEPtr; TclSetTailcall(interp, valuePtr); iPtr->execEnvPtr = corPtr->eePtr; yieldParameter = (PTR2INT(NULL)+1); /*==CORO_ACTIVATE_YIELDM*/ doYield: /* TIP #280: Record the last piece of info needed by * 'TclGetSrcInfoForPc', and push the frame. */ bcFramePtr->data.tebc.pc = (char *) pc; iPtr->cmdFramePtr = bcFramePtr; if (iPtr->flags & INTERP_DEBUG_FRAME) { ArgumentBCEnter(interp, codePtr, TD, pc, objc, objv); } pc++; cleanup = 1; TEBC_YIELD(); TclNRAddCallback(interp, TclNRCoroutineActivateCallback, corPtr, INT2PTR(yieldParameter), NULL, NULL); return TCL_OK; } case INST_TAILCALL: { Tcl_Obj *listPtr, *nsObjPtr; opnd = TclGetUInt1AtPtr(pc+1); if (!(iPtr->varFramePtr->isProcCallFrame & 1)) { TRACE(("%d => ERROR: tailcall in non-proc context\n", opnd)); Tcl_SetObjResult(interp, Tcl_NewStringObj( "tailcall can only be called from a proc or lambda", -1)); DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "TCL", "TAILCALL", "ILLEGAL", NULL); CACHE_STACK_INFO(); goto gotError; } #ifdef TCL_COMPILE_DEBUG /* FIXME: What is the right thing to trace? */ { register int i; TRACE(("%d [", opnd)); for (i=opnd-1 ; i>=0 ; i--) { TRACE_APPEND(("\"%.30s\"", O2S(OBJ_AT_DEPTH(i)))); if (i > 0) { TRACE_APPEND((" ")); } } TRACE_APPEND(("] => RETURN...")); } #endif /* * Push the evaluation of the called command into the NR callback * stack. */ listPtr = Tcl_NewListObj(opnd, &OBJ_AT_DEPTH(opnd-1)); nsObjPtr = Tcl_NewStringObj(iPtr->varFramePtr->nsPtr->fullName, -1); TclListObjSetElement(interp, listPtr, 0, nsObjPtr); if (iPtr->varFramePtr->tailcallPtr) { Tcl_DecrRefCount(iPtr->varFramePtr->tailcallPtr); } iPtr->varFramePtr->tailcallPtr = listPtr; result = TCL_RETURN; cleanup = opnd; goto processExceptionReturn; } case INST_DONE: if (tosPtr > initTosPtr) { /* * Set the interpreter's object result to point to the topmost * object from the stack, and check for a possible [catch]. The * stackTop's level and refCount will be handled by "processCatch" * or "abnormalReturn". */ Tcl_SetObjResult(interp, OBJ_AT_TOS); #ifdef TCL_COMPILE_DEBUG TRACE_WITH_OBJ(("=> return code=%d, result=", result), iPtr->objResultPtr); if (traceInstructions) { fprintf(stdout, "\n"); } #endif goto checkForCatch; } (void) POP_OBJECT(); goto abnormalReturn; case INST_PUSH4: objResultPtr = codePtr->objArrayPtr[TclGetUInt4AtPtr(pc+1)]; TRACE_WITH_OBJ(("%u => ", TclGetUInt4AtPtr(pc+1)), objResultPtr); NEXT_INST_F(5, 0, 1); case INST_POP: TRACE_WITH_OBJ(("=> discarding "), OBJ_AT_TOS); objPtr = POP_OBJECT(); TclDecrRefCount(objPtr); NEXT_INST_F(1, 0, 0); case INST_DUP: objResultPtr = OBJ_AT_TOS; TRACE_WITH_OBJ(("=> "), objResultPtr); NEXT_INST_F(1, 0, 1); case INST_OVER: opnd = TclGetUInt4AtPtr(pc+1); objResultPtr = OBJ_AT_DEPTH(opnd); TRACE_WITH_OBJ(("%u => ", opnd), objResultPtr); NEXT_INST_F(5, 0, 1); case INST_REVERSE: { Tcl_Obj **a, **b; opnd = TclGetUInt4AtPtr(pc+1); a = tosPtr-(opnd-1); b = tosPtr; while (a OK\n", opnd)); NEXT_INST_F(5, 0, 0); } case INST_STR_CONCAT1: opnd = TclGetUInt1AtPtr(pc+1); objResultPtr = TclStringCat(interp, opnd, &OBJ_AT_DEPTH(opnd-1), TCL_STRING_IN_PLACE); if (objResultPtr == NULL) { TRACE_ERROR(interp); goto gotError; } TRACE_WITH_OBJ(("%u => ", opnd), objResultPtr); NEXT_INST_V(2, opnd, 1); case INST_CONCAT_STK: /* * Pop the opnd (objc) top stack elements, run through Tcl_ConcatObj, * and then decrement their ref counts. */ opnd = TclGetUInt4AtPtr(pc+1); objResultPtr = Tcl_ConcatObj(opnd, &OBJ_AT_DEPTH(opnd-1)); TRACE_WITH_OBJ(("%u => ", opnd), objResultPtr); NEXT_INST_V(5, opnd, 1); case INST_EXPAND_START: /* * Push an element to the auxObjList. This records the current * stack depth - i.e., the point in the stack where the expanded * command starts. * * Use a Tcl_Obj as linked list element; slight mem waste, but faster * allocation than ckalloc. This also abuses the Tcl_Obj structure, as * we do not define a special tclObjType for it. It is not dangerous * as the obj is never passed anywhere, so that all manipulations are * performed here and in INST_INVOKE_EXPANDED (in case of an expansion * error, also in INST_EXPAND_STKTOP). */ TclNewObj(objPtr); objPtr->internalRep.twoPtrValue.ptr2 = INT2PTR(CURR_DEPTH); objPtr->length = 0; PUSH_TAUX_OBJ(objPtr); TRACE(("=> mark depth as %d\n", (int) CURR_DEPTH)); NEXT_INST_F(1, 0, 0); case INST_EXPAND_DROP: /* * Drops an element of the auxObjList, popping stack elements to * restore the stack to the state before the point where the aux * element was created. */ CLANG_ASSERT(auxObjList); objc = CURR_DEPTH - PTR2INT(auxObjList->internalRep.twoPtrValue.ptr2); POP_TAUX_OBJ(); #ifdef TCL_COMPILE_DEBUG /* Ugly abuse! */ starting = 1; #endif TRACE(("=> drop %d items\n", objc)); NEXT_INST_V(1, objc, 0); case INST_EXPAND_STKTOP: { int i; ptrdiff_t moved; /* * Make sure that the element at stackTop is a list; if not, just * leave with an error. Note that the element from the expand list * will be removed at checkForCatch. */ objPtr = OBJ_AT_TOS; TRACE(("\"%.30s\" => ", O2S(objPtr))); if (TclListObjGetElements(interp, objPtr, &objc, &objv) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } (void) POP_OBJECT(); /* * Make sure there is enough room in the stack to expand this list * *and* process the rest of the command (at least up to the next * argument expansion or command end). The operand is the current * stack depth, as seen by the compiler. */ auxObjList->length += objc - 1; if ((objc > 1) && (auxObjList->length > 0)) { length = auxObjList->length /* Total expansion room we need */ + codePtr->maxStackDepth /* Beyond the original max */ - CURR_DEPTH; /* Relative to where we are */ DECACHE_STACK_INFO(); moved = GrowEvaluationStack(iPtr->execEnvPtr, length, 1) - (Tcl_Obj **) TD; if (moved) { /* * Change the global data to point to the new stack: move the * TEBCdataPtr TD, recompute the position of every other * stack-allocated parameter, update the stack pointers. */ TD = (TEBCdata *) (((Tcl_Obj **)TD) + moved); catchTop += moved; tosPtr += moved; } } /* * Expand the list at stacktop onto the stack; free the list. Knowing * that it has a freeIntRepProc we use Tcl_DecrRefCount(). */ for (i = 0; i < objc; i++) { PUSH_OBJECT(objv[i]); } TRACE_APPEND(("OK\n")); Tcl_DecrRefCount(objPtr); NEXT_INST_F(5, 0, 0); } case INST_EXPR_STK: { ByteCode *newCodePtr; bcFramePtr->data.tebc.pc = (char *) pc; iPtr->cmdFramePtr = bcFramePtr; DECACHE_STACK_INFO(); newCodePtr = CompileExprObj(interp, OBJ_AT_TOS); CACHE_STACK_INFO(); cleanup = 1; pc++; TEBC_YIELD(); return TclNRExecuteByteCode(interp, newCodePtr); } /* * INVOCATION BLOCK */ instEvalStk: case INST_EVAL_STK: bcFramePtr->data.tebc.pc = (char *) pc; iPtr->cmdFramePtr = bcFramePtr; cleanup = 1; pc += 1; TEBC_YIELD(); return TclNREvalObjEx(interp, OBJ_AT_TOS, 0, NULL, 0); case INST_INVOKE_EXPANDED: CLANG_ASSERT(auxObjList); objc = CURR_DEPTH - PTR2INT(auxObjList->internalRep.twoPtrValue.ptr2); POP_TAUX_OBJ(); if (objc) { pcAdjustment = 1; goto doInvocation; } /* * Nothing was expanded, return {}. */ TclNewObj(objResultPtr); NEXT_INST_F(1, 0, 1); case INST_INVOKE_STK4: objc = TclGetUInt4AtPtr(pc+1); pcAdjustment = 5; goto doInvocation; case INST_INVOKE_STK1: objc = TclGetUInt1AtPtr(pc+1); pcAdjustment = 2; doInvocation: objv = &OBJ_AT_DEPTH(objc-1); cleanup = objc; #ifdef TCL_COMPILE_DEBUG if (tclTraceExec >= 2) { int i; if (traceInstructions) { strncpy(cmdNameBuf, TclGetString(objv[0]), 20); TRACE(("%u => call ", objc)); } else { fprintf(stdout, "%d: (%u) invoking ", iPtr->numLevels, (unsigned)(pc - codePtr->codeStart)); } for (i = 0; i < objc; i++) { TclPrintObject(stdout, objv[i], 15); fprintf(stdout, " "); } fprintf(stdout, "\n"); fflush(stdout); } #endif /*TCL_COMPILE_DEBUG*/ /* * Finally, let TclEvalObjv handle the command. * * TIP #280: Record the last piece of info needed by * 'TclGetSrcInfoForPc', and push the frame. */ bcFramePtr->data.tebc.pc = (char *) pc; iPtr->cmdFramePtr = bcFramePtr; if (iPtr->flags & INTERP_DEBUG_FRAME) { ArgumentBCEnter(interp, codePtr, TD, pc, objc, objv); } DECACHE_STACK_INFO(); pc += pcAdjustment; TEBC_YIELD(); return TclNREvalObjv(interp, objc, objv, TCL_EVAL_NOERR | TCL_EVAL_SOURCE_IN_FRAME, NULL); #if TCL_SUPPORT_84_BYTECODE case INST_CALL_BUILTIN_FUNC1: /* * Call one of the built-in pre-8.5 Tcl math functions. This * translates to INST_INVOKE_STK1 with the first argument of * ::tcl::mathfunc::$objv[0]. We need to insert the named math * function into the stack. */ opnd = TclGetUInt1AtPtr(pc+1); if ((opnd < 0) || (opnd > LAST_BUILTIN_FUNC)) { TRACE(("UNRECOGNIZED BUILTIN FUNC CODE %d\n", opnd)); Tcl_Panic("TclNRExecuteByteCode: unrecognized builtin function code %d", opnd); } TclNewLiteralStringObj(objPtr, "::tcl::mathfunc::"); Tcl_AppendToObj(objPtr, tclBuiltinFuncTable[opnd].name, -1); /* * Only 0, 1 or 2 args. */ { int numArgs = tclBuiltinFuncTable[opnd].numArgs; Tcl_Obj *tmpPtr1, *tmpPtr2; if (numArgs == 0) { PUSH_OBJECT(objPtr); } else if (numArgs == 1) { tmpPtr1 = POP_OBJECT(); PUSH_OBJECT(objPtr); PUSH_OBJECT(tmpPtr1); Tcl_DecrRefCount(tmpPtr1); } else { tmpPtr2 = POP_OBJECT(); tmpPtr1 = POP_OBJECT(); PUSH_OBJECT(objPtr); PUSH_OBJECT(tmpPtr1); PUSH_OBJECT(tmpPtr2); Tcl_DecrRefCount(tmpPtr1); Tcl_DecrRefCount(tmpPtr2); } objc = numArgs + 1; } pcAdjustment = 2; goto doInvocation; case INST_CALL_FUNC1: /* * Call a non-builtin Tcl math function previously registered by a * call to Tcl_CreateMathFunc pre-8.5. This is essentially * INST_INVOKE_STK1 converting the first arg to * ::tcl::mathfunc::$objv[0]. */ objc = TclGetUInt1AtPtr(pc+1); /* Number of arguments. The function * name is the 0-th argument. */ objPtr = OBJ_AT_DEPTH(objc-1); TclNewLiteralStringObj(tmpPtr, "::tcl::mathfunc::"); Tcl_AppendObjToObj(tmpPtr, objPtr); Tcl_DecrRefCount(objPtr); /* * Variation of PUSH_OBJECT. */ OBJ_AT_DEPTH(objc-1) = tmpPtr; Tcl_IncrRefCount(tmpPtr); pcAdjustment = 2; goto doInvocation; #else /* * INST_CALL_BUILTIN_FUNC1 and INST_CALL_FUNC1 were made obsolete by the * changes to add a ::tcl::mathfunc namespace in 8.5. Optional support * remains for existing bytecode precompiled files. */ case INST_CALL_BUILTIN_FUNC1: Tcl_Panic("TclNRExecuteByteCode: obsolete INST_CALL_BUILTIN_FUNC1 found"); case INST_CALL_FUNC1: Tcl_Panic("TclNRExecuteByteCode: obsolete INST_CALL_FUNC1 found"); #endif case INST_INVOKE_REPLACE: objc = TclGetUInt4AtPtr(pc+1); opnd = TclGetUInt1AtPtr(pc+5); objPtr = POP_OBJECT(); objv = &OBJ_AT_DEPTH(objc-1); cleanup = objc; #ifdef TCL_COMPILE_DEBUG if (tclTraceExec >= 2) { int i; if (traceInstructions) { strncpy(cmdNameBuf, TclGetString(objv[0]), 20); TRACE(("%u => call (implementation %s) ", objc, O2S(objPtr))); } else { fprintf(stdout, "%d: (%u) invoking (using implementation %s) ", iPtr->numLevels, (unsigned)(pc - codePtr->codeStart), O2S(objPtr)); } for (i = 0; i < objc; i++) { if (i < opnd) { fprintf(stdout, "<"); TclPrintObject(stdout, objv[i], 15); fprintf(stdout, ">"); } else { TclPrintObject(stdout, objv[i], 15); } fprintf(stdout, " "); } fprintf(stdout, "\n"); fflush(stdout); } #endif /*TCL_COMPILE_DEBUG*/ bcFramePtr->data.tebc.pc = (char *) pc; iPtr->cmdFramePtr = bcFramePtr; if (iPtr->flags & INTERP_DEBUG_FRAME) { ArgumentBCEnter(interp, codePtr, TD, pc, objc, objv); } TclInitRewriteEnsemble(interp, opnd, 1, objv); { Tcl_Obj *copyPtr = Tcl_NewListObj(objc - opnd + 1, NULL); Tcl_ListObjAppendElement(NULL, copyPtr, objPtr); Tcl_ListObjReplace(NULL, copyPtr, LIST_MAX, 0, objc - opnd, objv + opnd); Tcl_DecrRefCount(objPtr); objPtr = copyPtr; } DECACHE_STACK_INFO(); pc += 6; TEBC_YIELD(); TclMarkTailcall(interp); TclNRAddCallback(interp, TclClearRootEnsemble, NULL, NULL, NULL, NULL); Tcl_ListObjGetElements(NULL, objPtr, &objc, &objv); TclNRAddCallback(interp, TclNRReleaseValues, objPtr, NULL, NULL, NULL); return TclNREvalObjv(interp, objc, objv, TCL_EVAL_INVOKE, NULL); /* * ----------------------------------------------------------------- * Start of INST_LOAD instructions. * * WARNING: more 'goto' here than your doctor recommended! The different * instructions set the value of some variables and then jump to some * common execution code. */ case INST_LOAD_SCALAR1: instLoadScalar1: opnd = TclGetUInt1AtPtr(pc+1); varPtr = LOCAL(opnd); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } TRACE(("%u => ", opnd)); if (TclIsVarDirectReadable(varPtr)) { /* * No errors, no traces: just get the value. */ objResultPtr = varPtr->value.objPtr; TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_F(2, 0, 1); } pcAdjustment = 2; cleanup = 0; arrayPtr = NULL; part1Ptr = part2Ptr = NULL; goto doCallPtrGetVar; case INST_LOAD_SCALAR4: opnd = TclGetUInt4AtPtr(pc+1); varPtr = LOCAL(opnd); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } TRACE(("%u => ", opnd)); if (TclIsVarDirectReadable(varPtr)) { /* * No errors, no traces: just get the value. */ objResultPtr = varPtr->value.objPtr; TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_F(5, 0, 1); } pcAdjustment = 5; cleanup = 0; arrayPtr = NULL; part1Ptr = part2Ptr = NULL; goto doCallPtrGetVar; case INST_LOAD_ARRAY4: opnd = TclGetUInt4AtPtr(pc+1); pcAdjustment = 5; goto doLoadArray; case INST_LOAD_ARRAY1: opnd = TclGetUInt1AtPtr(pc+1); pcAdjustment = 2; doLoadArray: part1Ptr = NULL; part2Ptr = OBJ_AT_TOS; arrayPtr = LOCAL(opnd); while (TclIsVarLink(arrayPtr)) { arrayPtr = arrayPtr->value.linkPtr; } TRACE(("%u \"%.30s\" => ", opnd, O2S(part2Ptr))); if (TclIsVarArray(arrayPtr) && !ReadTraced(arrayPtr)) { varPtr = VarHashFindVar(arrayPtr->value.tablePtr, part2Ptr); if (varPtr && TclIsVarDirectReadable(varPtr)) { /* * No errors, no traces: just get the value. */ objResultPtr = varPtr->value.objPtr; TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_F(pcAdjustment, 1, 1); } } varPtr = TclLookupArrayElement(interp, part1Ptr, part2Ptr, TCL_LEAVE_ERR_MSG, "read", 0, 1, arrayPtr, opnd); if (varPtr == NULL) { TRACE_ERROR(interp); goto gotError; } cleanup = 1; goto doCallPtrGetVar; case INST_LOAD_ARRAY_STK: cleanup = 2; part2Ptr = OBJ_AT_TOS; /* element name */ objPtr = OBJ_UNDER_TOS; /* array name */ TRACE(("\"%.30s(%.30s)\" => ", O2S(objPtr), O2S(part2Ptr))); goto doLoadStk; case INST_LOAD_STK: case INST_LOAD_SCALAR_STK: cleanup = 1; part2Ptr = NULL; objPtr = OBJ_AT_TOS; /* variable name */ TRACE(("\"%.30s\" => ", O2S(objPtr))); doLoadStk: part1Ptr = objPtr; varPtr = TclObjLookupVarEx(interp, part1Ptr, part2Ptr, TCL_LEAVE_ERR_MSG, "read", /*createPart1*/0, /*createPart2*/1, &arrayPtr); if (!varPtr) { TRACE_ERROR(interp); goto gotError; } if (TclIsVarDirectReadable2(varPtr, arrayPtr)) { /* * No errors, no traces: just get the value. */ objResultPtr = varPtr->value.objPtr; TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_V(1, cleanup, 1); } pcAdjustment = 1; opnd = -1; doCallPtrGetVar: /* * There are either errors or the variable is traced: call * TclPtrGetVar to process fully. */ DECACHE_STACK_INFO(); objResultPtr = TclPtrGetVarIdx(interp, varPtr, arrayPtr, part1Ptr, part2Ptr, TCL_LEAVE_ERR_MSG, opnd); CACHE_STACK_INFO(); if (!objResultPtr) { TRACE_ERROR(interp); goto gotError; } TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_V(pcAdjustment, cleanup, 1); /* * End of INST_LOAD instructions. * ----------------------------------------------------------------- * Start of INST_STORE and related instructions. * * WARNING: more 'goto' here than your doctor recommended! The different * instructions set the value of some variables and then jump to somme * common execution code. */ { int storeFlags, len; case INST_STORE_ARRAY4: opnd = TclGetUInt4AtPtr(pc+1); pcAdjustment = 5; goto doStoreArrayDirect; case INST_STORE_ARRAY1: opnd = TclGetUInt1AtPtr(pc+1); pcAdjustment = 2; doStoreArrayDirect: valuePtr = OBJ_AT_TOS; part2Ptr = OBJ_UNDER_TOS; arrayPtr = LOCAL(opnd); TRACE(("%u \"%.30s\" <- \"%.30s\" => ", opnd, O2S(part2Ptr), O2S(valuePtr))); while (TclIsVarLink(arrayPtr)) { arrayPtr = arrayPtr->value.linkPtr; } if (TclIsVarArray(arrayPtr) && !WriteTraced(arrayPtr)) { varPtr = VarHashFindVar(arrayPtr->value.tablePtr, part2Ptr); if (varPtr && TclIsVarDirectWritable(varPtr)) { tosPtr--; Tcl_DecrRefCount(OBJ_AT_TOS); OBJ_AT_TOS = valuePtr; goto doStoreVarDirect; } } cleanup = 2; storeFlags = TCL_LEAVE_ERR_MSG; part1Ptr = NULL; goto doStoreArrayDirectFailed; case INST_STORE_SCALAR4: opnd = TclGetUInt4AtPtr(pc+1); pcAdjustment = 5; goto doStoreScalarDirect; case INST_STORE_SCALAR1: opnd = TclGetUInt1AtPtr(pc+1); pcAdjustment = 2; doStoreScalarDirect: valuePtr = OBJ_AT_TOS; varPtr = LOCAL(opnd); TRACE(("%u <- \"%.30s\" => ", opnd, O2S(valuePtr))); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } if (!TclIsVarDirectWritable(varPtr)) { storeFlags = TCL_LEAVE_ERR_MSG; part1Ptr = NULL; goto doStoreScalar; } /* * No traces, no errors, plain 'set': we can safely inline. The value * *will* be set to what's requested, so that the stack top remains * pointing to the same Tcl_Obj. */ doStoreVarDirect: valuePtr = varPtr->value.objPtr; if (valuePtr != NULL) { TclDecrRefCount(valuePtr); } objResultPtr = OBJ_AT_TOS; varPtr->value.objPtr = objResultPtr; #ifndef TCL_COMPILE_DEBUG if (*(pc+pcAdjustment) == INST_POP) { tosPtr--; NEXT_INST_F((pcAdjustment+1), 0, 0); } #else TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); #endif Tcl_IncrRefCount(objResultPtr); NEXT_INST_F(pcAdjustment, 0, 0); case INST_LAPPEND_STK: valuePtr = OBJ_AT_TOS; /* value to append */ part2Ptr = NULL; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE | TCL_LIST_ELEMENT); goto doStoreStk; case INST_LAPPEND_ARRAY_STK: valuePtr = OBJ_AT_TOS; /* value to append */ part2Ptr = OBJ_UNDER_TOS; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE | TCL_LIST_ELEMENT); goto doStoreStk; case INST_APPEND_STK: valuePtr = OBJ_AT_TOS; /* value to append */ part2Ptr = NULL; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE); goto doStoreStk; case INST_APPEND_ARRAY_STK: valuePtr = OBJ_AT_TOS; /* value to append */ part2Ptr = OBJ_UNDER_TOS; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE); goto doStoreStk; case INST_STORE_ARRAY_STK: valuePtr = OBJ_AT_TOS; part2Ptr = OBJ_UNDER_TOS; storeFlags = TCL_LEAVE_ERR_MSG; goto doStoreStk; case INST_STORE_STK: case INST_STORE_SCALAR_STK: valuePtr = OBJ_AT_TOS; part2Ptr = NULL; storeFlags = TCL_LEAVE_ERR_MSG; doStoreStk: objPtr = OBJ_AT_DEPTH(1 + (part2Ptr != NULL)); /* variable name */ part1Ptr = objPtr; #ifdef TCL_COMPILE_DEBUG if (part2Ptr == NULL) { TRACE(("\"%.30s\" <- \"%.30s\" =>", O2S(part1Ptr),O2S(valuePtr))); } else { TRACE(("\"%.30s(%.30s)\" <- \"%.30s\" => ", O2S(part1Ptr), O2S(part2Ptr), O2S(valuePtr))); } #endif varPtr = TclObjLookupVarEx(interp, objPtr,part2Ptr, TCL_LEAVE_ERR_MSG, "set", /*createPart1*/ 1, /*createPart2*/ 1, &arrayPtr); if (!varPtr) { TRACE_ERROR(interp); goto gotError; } cleanup = ((part2Ptr == NULL)? 2 : 3); pcAdjustment = 1; opnd = -1; goto doCallPtrSetVar; case INST_LAPPEND_ARRAY4: opnd = TclGetUInt4AtPtr(pc+1); pcAdjustment = 5; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE | TCL_LIST_ELEMENT); goto doStoreArray; case INST_LAPPEND_ARRAY1: opnd = TclGetUInt1AtPtr(pc+1); pcAdjustment = 2; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE | TCL_LIST_ELEMENT); goto doStoreArray; case INST_APPEND_ARRAY4: opnd = TclGetUInt4AtPtr(pc+1); pcAdjustment = 5; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE); goto doStoreArray; case INST_APPEND_ARRAY1: opnd = TclGetUInt1AtPtr(pc+1); pcAdjustment = 2; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE); goto doStoreArray; doStoreArray: valuePtr = OBJ_AT_TOS; part2Ptr = OBJ_UNDER_TOS; arrayPtr = LOCAL(opnd); TRACE(("%u \"%.30s\" <- \"%.30s\" => ", opnd, O2S(part2Ptr), O2S(valuePtr))); while (TclIsVarLink(arrayPtr)) { arrayPtr = arrayPtr->value.linkPtr; } cleanup = 2; part1Ptr = NULL; doStoreArrayDirectFailed: varPtr = TclLookupArrayElement(interp, part1Ptr, part2Ptr, TCL_LEAVE_ERR_MSG, "set", 1, 1, arrayPtr, opnd); if (!varPtr) { TRACE_ERROR(interp); goto gotError; } goto doCallPtrSetVar; case INST_LAPPEND_SCALAR4: opnd = TclGetUInt4AtPtr(pc+1); pcAdjustment = 5; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE | TCL_LIST_ELEMENT); goto doStoreScalar; case INST_LAPPEND_SCALAR1: opnd = TclGetUInt1AtPtr(pc+1); pcAdjustment = 2; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE | TCL_LIST_ELEMENT); goto doStoreScalar; case INST_APPEND_SCALAR4: opnd = TclGetUInt4AtPtr(pc+1); pcAdjustment = 5; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE); goto doStoreScalar; case INST_APPEND_SCALAR1: opnd = TclGetUInt1AtPtr(pc+1); pcAdjustment = 2; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE); goto doStoreScalar; doStoreScalar: valuePtr = OBJ_AT_TOS; varPtr = LOCAL(opnd); TRACE(("%u <- \"%.30s\" => ", opnd, O2S(valuePtr))); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } cleanup = 1; arrayPtr = NULL; part1Ptr = part2Ptr = NULL; doCallPtrSetVar: DECACHE_STACK_INFO(); objResultPtr = TclPtrSetVarIdx(interp, varPtr, arrayPtr, part1Ptr, part2Ptr, valuePtr, storeFlags, opnd); CACHE_STACK_INFO(); if (!objResultPtr) { TRACE_ERROR(interp); goto gotError; } #ifndef TCL_COMPILE_DEBUG if (*(pc+pcAdjustment) == INST_POP) { NEXT_INST_V((pcAdjustment+1), cleanup, 0); } #endif TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_V(pcAdjustment, cleanup, 1); case INST_LAPPEND_LIST: opnd = TclGetUInt4AtPtr(pc+1); valuePtr = OBJ_AT_TOS; varPtr = LOCAL(opnd); cleanup = 1; pcAdjustment = 5; while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } TRACE(("%u <- \"%.30s\" => ", opnd, O2S(valuePtr))); if (TclListObjGetElements(interp, valuePtr, &objc, &objv) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } if (TclIsVarDirectReadable(varPtr) && TclIsVarDirectWritable(varPtr)) { goto lappendListDirect; } arrayPtr = NULL; part1Ptr = part2Ptr = NULL; goto lappendListPtr; case INST_LAPPEND_LIST_ARRAY: opnd = TclGetUInt4AtPtr(pc+1); valuePtr = OBJ_AT_TOS; part1Ptr = NULL; part2Ptr = OBJ_UNDER_TOS; arrayPtr = LOCAL(opnd); cleanup = 2; pcAdjustment = 5; while (TclIsVarLink(arrayPtr)) { arrayPtr = arrayPtr->value.linkPtr; } TRACE(("%u \"%.30s\" \"%.30s\" => ", opnd, O2S(part2Ptr), O2S(valuePtr))); if (TclListObjGetElements(interp, valuePtr, &objc, &objv) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } if (TclIsVarArray(arrayPtr) && !ReadTraced(arrayPtr) && !WriteTraced(arrayPtr)) { varPtr = VarHashFindVar(arrayPtr->value.tablePtr, part2Ptr); if (varPtr && TclIsVarDirectReadable(varPtr) && TclIsVarDirectWritable(varPtr)) { goto lappendListDirect; } } varPtr = TclLookupArrayElement(interp, part1Ptr, part2Ptr, TCL_LEAVE_ERR_MSG, "set", 1, 1, arrayPtr, opnd); if (varPtr == NULL) { TRACE_ERROR(interp); goto gotError; } goto lappendListPtr; case INST_LAPPEND_LIST_ARRAY_STK: pcAdjustment = 1; cleanup = 3; valuePtr = OBJ_AT_TOS; part2Ptr = OBJ_UNDER_TOS; /* element name */ part1Ptr = OBJ_AT_DEPTH(2); /* array name */ TRACE(("\"%.30s(%.30s)\" \"%.30s\" => ", O2S(part1Ptr), O2S(part2Ptr), O2S(valuePtr))); goto lappendList; case INST_LAPPEND_LIST_STK: pcAdjustment = 1; cleanup = 2; valuePtr = OBJ_AT_TOS; part2Ptr = NULL; part1Ptr = OBJ_UNDER_TOS; /* variable name */ TRACE(("\"%.30s\" \"%.30s\" => ", O2S(part1Ptr), O2S(valuePtr))); goto lappendList; lappendListDirect: objResultPtr = varPtr->value.objPtr; if (TclListObjLength(interp, objResultPtr, &len) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } if (Tcl_IsShared(objResultPtr)) { Tcl_Obj *newValue = Tcl_DuplicateObj(objResultPtr); TclDecrRefCount(objResultPtr); varPtr->value.objPtr = objResultPtr = newValue; Tcl_IncrRefCount(newValue); } if (Tcl_ListObjReplace(interp, objResultPtr, len, 0, objc, objv) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_V(pcAdjustment, cleanup, 1); lappendList: opnd = -1; if (TclListObjGetElements(interp, valuePtr, &objc, &objv) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } DECACHE_STACK_INFO(); varPtr = TclObjLookupVarEx(interp, part1Ptr, part2Ptr, TCL_LEAVE_ERR_MSG, "set", 1, 1, &arrayPtr); CACHE_STACK_INFO(); if (!varPtr) { TRACE_ERROR(interp); goto gotError; } lappendListPtr: if (TclIsVarInHash(varPtr)) { VarHashRefCount(varPtr)++; } if (arrayPtr && TclIsVarInHash(arrayPtr)) { VarHashRefCount(arrayPtr)++; } DECACHE_STACK_INFO(); objResultPtr = TclPtrGetVarIdx(interp, varPtr, arrayPtr, part1Ptr, part2Ptr, TCL_LEAVE_ERR_MSG, opnd); CACHE_STACK_INFO(); if (TclIsVarInHash(varPtr)) { VarHashRefCount(varPtr)--; } if (arrayPtr && TclIsVarInHash(arrayPtr)) { VarHashRefCount(arrayPtr)--; } { int createdNewObj = 0; if (!objResultPtr) { objResultPtr = valuePtr; } else if (TclListObjLength(interp, objResultPtr, &len)!=TCL_OK) { TRACE_ERROR(interp); goto gotError; } else { if (Tcl_IsShared(objResultPtr)) { objResultPtr = Tcl_DuplicateObj(objResultPtr); createdNewObj = 1; } if (Tcl_ListObjReplace(interp, objResultPtr, len,0, objc,objv) != TCL_OK) { goto errorInLappendListPtr; } } DECACHE_STACK_INFO(); objResultPtr = TclPtrSetVarIdx(interp, varPtr, arrayPtr, part1Ptr, part2Ptr, objResultPtr, TCL_LEAVE_ERR_MSG, opnd); CACHE_STACK_INFO(); if (!objResultPtr) { errorInLappendListPtr: if (createdNewObj) { TclDecrRefCount(objResultPtr); } TRACE_ERROR(interp); goto gotError; } } TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_V(pcAdjustment, cleanup, 1); } /* * End of INST_STORE and related instructions. * ----------------------------------------------------------------- * Start of INST_INCR instructions. * * WARNING: more 'goto' here than your doctor recommended! The different * instructions set the value of some variables and then jump to somme * common execution code. */ /*TODO: Consider more untangling here; merge with LOAD and STORE ? */ { Tcl_Obj *incrPtr; Tcl_WideInt w; long increment; case INST_INCR_SCALAR1: case INST_INCR_ARRAY1: case INST_INCR_ARRAY_STK: case INST_INCR_SCALAR_STK: case INST_INCR_STK: opnd = TclGetUInt1AtPtr(pc+1); incrPtr = POP_OBJECT(); switch (*pc) { case INST_INCR_SCALAR1: pcAdjustment = 2; goto doIncrScalar; case INST_INCR_ARRAY1: pcAdjustment = 2; goto doIncrArray; default: pcAdjustment = 1; goto doIncrStk; } case INST_INCR_ARRAY_STK_IMM: case INST_INCR_SCALAR_STK_IMM: case INST_INCR_STK_IMM: increment = TclGetInt1AtPtr(pc+1); incrPtr = Tcl_NewIntObj(increment); Tcl_IncrRefCount(incrPtr); pcAdjustment = 2; doIncrStk: if ((*pc == INST_INCR_ARRAY_STK_IMM) || (*pc == INST_INCR_ARRAY_STK)) { part2Ptr = OBJ_AT_TOS; objPtr = OBJ_UNDER_TOS; TRACE(("\"%.30s(%.30s)\" (by %ld) => ", O2S(objPtr), O2S(part2Ptr), increment)); } else { part2Ptr = NULL; objPtr = OBJ_AT_TOS; TRACE(("\"%.30s\" (by %ld) => ", O2S(objPtr), increment)); } part1Ptr = objPtr; opnd = -1; varPtr = TclObjLookupVarEx(interp, objPtr, part2Ptr, TCL_LEAVE_ERR_MSG, "read", 1, 1, &arrayPtr); if (!varPtr) { DECACHE_STACK_INFO(); Tcl_AddErrorInfo(interp, "\n (reading value of variable to increment)"); CACHE_STACK_INFO(); TRACE_ERROR(interp); Tcl_DecrRefCount(incrPtr); goto gotError; } cleanup = ((part2Ptr == NULL)? 1 : 2); goto doIncrVar; case INST_INCR_ARRAY1_IMM: opnd = TclGetUInt1AtPtr(pc+1); increment = TclGetInt1AtPtr(pc+2); incrPtr = Tcl_NewIntObj(increment); Tcl_IncrRefCount(incrPtr); pcAdjustment = 3; doIncrArray: part1Ptr = NULL; part2Ptr = OBJ_AT_TOS; arrayPtr = LOCAL(opnd); cleanup = 1; while (TclIsVarLink(arrayPtr)) { arrayPtr = arrayPtr->value.linkPtr; } TRACE(("%u \"%.30s\" (by %ld) => ", opnd, O2S(part2Ptr), increment)); varPtr = TclLookupArrayElement(interp, part1Ptr, part2Ptr, TCL_LEAVE_ERR_MSG, "read", 1, 1, arrayPtr, opnd); if (!varPtr) { TRACE_ERROR(interp); Tcl_DecrRefCount(incrPtr); goto gotError; } goto doIncrVar; case INST_INCR_SCALAR1_IMM: opnd = TclGetUInt1AtPtr(pc+1); increment = TclGetInt1AtPtr(pc+2); pcAdjustment = 3; cleanup = 0; varPtr = LOCAL(opnd); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } if (TclIsVarDirectModifyable(varPtr)) { ClientData ptr; int type; objPtr = varPtr->value.objPtr; if (GetNumberFromObj(NULL, objPtr, &ptr, &type) == TCL_OK) { if (type == TCL_NUMBER_WIDE) { Tcl_WideInt augend = *((const Tcl_WideInt *)ptr); Tcl_WideInt sum = augend + increment; /* * Overflow when (augend and sum have different sign) and * (augend and increment have the same sign). This is * encapsulated in the Overflowing macro. */ if (!Overflowing(augend, increment, sum)) { TRACE(("%u %ld => ", opnd, increment)); if (Tcl_IsShared(objPtr)) { objPtr->refCount--; /* We know it's shared. */ TclNewIntObj(objResultPtr, sum); Tcl_IncrRefCount(objResultPtr); varPtr->value.objPtr = objResultPtr; } else { objResultPtr = objPtr; TclSetIntObj(objPtr, sum); } goto doneIncr; } w = (Tcl_WideInt)augend; TRACE(("%u %ld => ", opnd, increment)); if (Tcl_IsShared(objPtr)) { objPtr->refCount--; /* We know it's shared. */ objResultPtr = Tcl_NewWideIntObj(w+increment); Tcl_IncrRefCount(objResultPtr); varPtr->value.objPtr = objResultPtr; } else { objResultPtr = objPtr; /* * We know the sum value is outside the long range; * use macro form that doesn't range test again. */ TclSetIntObj(objPtr, w+increment); } goto doneIncr; } /* end if (type == TCL_NUMBER_WIDE) */ } if (Tcl_IsShared(objPtr)) { objPtr->refCount--; /* We know it's shared */ objResultPtr = Tcl_DuplicateObj(objPtr); Tcl_IncrRefCount(objResultPtr); varPtr->value.objPtr = objResultPtr; } else { objResultPtr = objPtr; } TclNewIntObj(incrPtr, increment); if (TclIncrObj(interp, objResultPtr, incrPtr) != TCL_OK) { Tcl_DecrRefCount(incrPtr); TRACE_ERROR(interp); goto gotError; } Tcl_DecrRefCount(incrPtr); goto doneIncr; } /* * All other cases, flow through to generic handling. */ TclNewIntObj(incrPtr, increment); Tcl_IncrRefCount(incrPtr); doIncrScalar: varPtr = LOCAL(opnd); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } arrayPtr = NULL; part1Ptr = part2Ptr = NULL; cleanup = 0; TRACE(("%u %s => ", opnd, Tcl_GetString(incrPtr))); doIncrVar: if (TclIsVarDirectModifyable2(varPtr, arrayPtr)) { objPtr = varPtr->value.objPtr; if (Tcl_IsShared(objPtr)) { objPtr->refCount--; /* We know it's shared */ objResultPtr = Tcl_DuplicateObj(objPtr); Tcl_IncrRefCount(objResultPtr); varPtr->value.objPtr = objResultPtr; } else { objResultPtr = objPtr; } if (TclIncrObj(interp, objResultPtr, incrPtr) != TCL_OK) { Tcl_DecrRefCount(incrPtr); TRACE_ERROR(interp); goto gotError; } Tcl_DecrRefCount(incrPtr); } else { DECACHE_STACK_INFO(); objResultPtr = TclPtrIncrObjVarIdx(interp, varPtr, arrayPtr, part1Ptr, part2Ptr, incrPtr, TCL_LEAVE_ERR_MSG, opnd); CACHE_STACK_INFO(); Tcl_DecrRefCount(incrPtr); if (objResultPtr == NULL) { TRACE_ERROR(interp); goto gotError; } } doneIncr: TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); #ifndef TCL_COMPILE_DEBUG if (*(pc+pcAdjustment) == INST_POP) { NEXT_INST_V((pcAdjustment+1), cleanup, 0); } #endif NEXT_INST_V(pcAdjustment, cleanup, 1); } /* * End of INST_INCR instructions. * ----------------------------------------------------------------- * Start of INST_EXIST instructions. */ case INST_EXIST_SCALAR: cleanup = 0; pcAdjustment = 5; opnd = TclGetUInt4AtPtr(pc+1); varPtr = LOCAL(opnd); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } TRACE(("%u => ", opnd)); if (ReadTraced(varPtr)) { DECACHE_STACK_INFO(); TclObjCallVarTraces(iPtr, NULL, varPtr, NULL, NULL, TCL_TRACE_READS, 0, opnd); CACHE_STACK_INFO(); if (TclIsVarUndefined(varPtr)) { TclCleanupVar(varPtr, NULL); varPtr = NULL; } } goto afterExistsPeephole; case INST_EXIST_ARRAY: cleanup = 1; pcAdjustment = 5; opnd = TclGetUInt4AtPtr(pc+1); part2Ptr = OBJ_AT_TOS; arrayPtr = LOCAL(opnd); while (TclIsVarLink(arrayPtr)) { arrayPtr = arrayPtr->value.linkPtr; } TRACE(("%u \"%.30s\" => ", opnd, O2S(part2Ptr))); if (TclIsVarArray(arrayPtr) && !ReadTraced(arrayPtr)) { varPtr = VarHashFindVar(arrayPtr->value.tablePtr, part2Ptr); if (!varPtr || !ReadTraced(varPtr)) { goto afterExistsPeephole; } } varPtr = TclLookupArrayElement(interp, NULL, part2Ptr, 0, "access", 0, 1, arrayPtr, opnd); if (varPtr) { if (ReadTraced(varPtr) || (arrayPtr && ReadTraced(arrayPtr))) { DECACHE_STACK_INFO(); TclObjCallVarTraces(iPtr, arrayPtr, varPtr, NULL, part2Ptr, TCL_TRACE_READS, 0, opnd); CACHE_STACK_INFO(); } if (TclIsVarUndefined(varPtr)) { TclCleanupVar(varPtr, arrayPtr); varPtr = NULL; } } goto afterExistsPeephole; case INST_EXIST_ARRAY_STK: cleanup = 2; pcAdjustment = 1; part2Ptr = OBJ_AT_TOS; /* element name */ part1Ptr = OBJ_UNDER_TOS; /* array name */ TRACE(("\"%.30s(%.30s)\" => ", O2S(part1Ptr), O2S(part2Ptr))); goto doExistStk; case INST_EXIST_STK: cleanup = 1; pcAdjustment = 1; part2Ptr = NULL; part1Ptr = OBJ_AT_TOS; /* variable name */ TRACE(("\"%.30s\" => ", O2S(part1Ptr))); doExistStk: varPtr = TclObjLookupVarEx(interp, part1Ptr, part2Ptr, 0, "access", /*createPart1*/0, /*createPart2*/1, &arrayPtr); if (varPtr) { if (ReadTraced(varPtr) || (arrayPtr && ReadTraced(arrayPtr))) { DECACHE_STACK_INFO(); TclObjCallVarTraces(iPtr, arrayPtr, varPtr, part1Ptr,part2Ptr, TCL_TRACE_READS, 0, -1); CACHE_STACK_INFO(); } if (TclIsVarUndefined(varPtr)) { TclCleanupVar(varPtr, arrayPtr); varPtr = NULL; } } /* * Peep-hole optimisation: if you're about to jump, do jump from here. */ afterExistsPeephole: { int found = (varPtr && !TclIsVarUndefined(varPtr)); TRACE_APPEND(("%d\n", found ? 1 : 0)); JUMP_PEEPHOLE_V(found, pcAdjustment, cleanup); } /* * End of INST_EXIST instructions. * ----------------------------------------------------------------- * Start of INST_UNSET instructions. */ { int flags; case INST_UNSET_SCALAR: flags = TclGetUInt1AtPtr(pc+1) ? TCL_LEAVE_ERR_MSG : 0; opnd = TclGetUInt4AtPtr(pc+2); varPtr = LOCAL(opnd); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } TRACE(("%s %u => ", (flags ? "normal" : "noerr"), opnd)); if (TclIsVarDirectUnsettable(varPtr) && !TclIsVarInHash(varPtr)) { /* * No errors, no traces, no searches: just make the variable cease * to exist. */ if (!TclIsVarUndefined(varPtr)) { TclDecrRefCount(varPtr->value.objPtr); } else if (flags & TCL_LEAVE_ERR_MSG) { goto slowUnsetScalar; } varPtr->value.objPtr = NULL; TRACE_APPEND(("OK\n")); NEXT_INST_F(6, 0, 0); } slowUnsetScalar: DECACHE_STACK_INFO(); if (TclPtrUnsetVarIdx(interp, varPtr, NULL, NULL, NULL, flags, opnd) != TCL_OK && flags) { goto errorInUnset; } CACHE_STACK_INFO(); NEXT_INST_F(6, 0, 0); case INST_UNSET_ARRAY: flags = TclGetUInt1AtPtr(pc+1) ? TCL_LEAVE_ERR_MSG : 0; opnd = TclGetUInt4AtPtr(pc+2); part2Ptr = OBJ_AT_TOS; arrayPtr = LOCAL(opnd); while (TclIsVarLink(arrayPtr)) { arrayPtr = arrayPtr->value.linkPtr; } TRACE(("%s %u \"%.30s\" => ", (flags ? "normal" : "noerr"), opnd, O2S(part2Ptr))); if (TclIsVarArray(arrayPtr) && !UnsetTraced(arrayPtr) && !(arrayPtr->flags & VAR_SEARCH_ACTIVE)) { varPtr = VarHashFindVar(arrayPtr->value.tablePtr, part2Ptr); if (varPtr && TclIsVarDirectUnsettable(varPtr)) { /* * No nasty traces and element exists, so we can proceed to * unset it. Might still not exist though... */ if (!TclIsVarUndefined(varPtr)) { TclDecrRefCount(varPtr->value.objPtr); TclSetVarUndefined(varPtr); TclClearVarNamespaceVar(varPtr); TclCleanupVar(varPtr, arrayPtr); } else if (flags & TCL_LEAVE_ERR_MSG) { goto slowUnsetArray; } TRACE_APPEND(("OK\n")); NEXT_INST_F(6, 1, 0); } else if (!varPtr && !(flags & TCL_LEAVE_ERR_MSG)) { /* * Don't need to do anything here. */ TRACE_APPEND(("OK\n")); NEXT_INST_F(6, 1, 0); } } slowUnsetArray: DECACHE_STACK_INFO(); varPtr = TclLookupArrayElement(interp, NULL, part2Ptr, flags, "unset", 0, 0, arrayPtr, opnd); if (!varPtr) { if (flags & TCL_LEAVE_ERR_MSG) { goto errorInUnset; } } else if (TclPtrUnsetVarIdx(interp, varPtr, arrayPtr, NULL, part2Ptr, flags, opnd) != TCL_OK && (flags & TCL_LEAVE_ERR_MSG)) { goto errorInUnset; } CACHE_STACK_INFO(); NEXT_INST_F(6, 1, 0); case INST_UNSET_ARRAY_STK: flags = TclGetUInt1AtPtr(pc+1) ? TCL_LEAVE_ERR_MSG : 0; cleanup = 2; part2Ptr = OBJ_AT_TOS; /* element name */ part1Ptr = OBJ_UNDER_TOS; /* array name */ TRACE(("%s \"%.30s(%.30s)\" => ", (flags ? "normal" : "noerr"), O2S(part1Ptr), O2S(part2Ptr))); goto doUnsetStk; case INST_UNSET_STK: flags = TclGetUInt1AtPtr(pc+1) ? TCL_LEAVE_ERR_MSG : 0; cleanup = 1; part2Ptr = NULL; part1Ptr = OBJ_AT_TOS; /* variable name */ TRACE(("%s \"%.30s\" => ", (flags ? "normal" : "noerr"), O2S(part1Ptr))); doUnsetStk: DECACHE_STACK_INFO(); if (TclObjUnsetVar2(interp, part1Ptr, part2Ptr, flags) != TCL_OK && (flags & TCL_LEAVE_ERR_MSG)) { goto errorInUnset; } CACHE_STACK_INFO(); TRACE_APPEND(("OK\n")); NEXT_INST_V(2, cleanup, 0); errorInUnset: CACHE_STACK_INFO(); TRACE_ERROR(interp); goto gotError; /* * This is really an unset operation these days. Do not issue. */ case INST_DICT_DONE: opnd = TclGetUInt4AtPtr(pc+1); TRACE(("%u => OK\n", opnd)); varPtr = LOCAL(opnd); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } if (TclIsVarDirectUnsettable(varPtr) && !TclIsVarInHash(varPtr)) { if (!TclIsVarUndefined(varPtr)) { TclDecrRefCount(varPtr->value.objPtr); } varPtr->value.objPtr = NULL; } else { DECACHE_STACK_INFO(); TclPtrUnsetVarIdx(interp, varPtr, NULL, NULL, NULL, 0, opnd); CACHE_STACK_INFO(); } NEXT_INST_F(5, 0, 0); } /* * End of INST_UNSET instructions. * ----------------------------------------------------------------- * Start of INST_ARRAY instructions. */ case INST_ARRAY_EXISTS_IMM: opnd = TclGetUInt4AtPtr(pc+1); pcAdjustment = 5; cleanup = 0; part1Ptr = NULL; arrayPtr = NULL; TRACE(("%u => ", opnd)); varPtr = LOCAL(opnd); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } goto doArrayExists; case INST_ARRAY_EXISTS_STK: opnd = -1; pcAdjustment = 1; cleanup = 1; part1Ptr = OBJ_AT_TOS; TRACE(("\"%.30s\" => ", O2S(part1Ptr))); varPtr = TclObjLookupVarEx(interp, part1Ptr, NULL, 0, NULL, /*createPart1*/0, /*createPart2*/0, &arrayPtr); doArrayExists: DECACHE_STACK_INFO(); result = TclCheckArrayTraces(interp, varPtr, arrayPtr, part1Ptr, opnd); CACHE_STACK_INFO(); if (result == TCL_ERROR) { TRACE_ERROR(interp); goto gotError; } if (varPtr && TclIsVarArray(varPtr) && !TclIsVarUndefined(varPtr)) { objResultPtr = TCONST(1); } else { objResultPtr = TCONST(0); } TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_V(pcAdjustment, cleanup, 1); case INST_ARRAY_MAKE_IMM: opnd = TclGetUInt4AtPtr(pc+1); pcAdjustment = 5; cleanup = 0; part1Ptr = NULL; arrayPtr = NULL; TRACE(("%u => ", opnd)); varPtr = LOCAL(opnd); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } goto doArrayMake; case INST_ARRAY_MAKE_STK: opnd = -1; pcAdjustment = 1; cleanup = 1; part1Ptr = OBJ_AT_TOS; TRACE(("\"%.30s\" => ", O2S(part1Ptr))); varPtr = TclObjLookupVarEx(interp, part1Ptr, NULL, TCL_LEAVE_ERR_MSG, "set", /*createPart1*/1, /*createPart2*/0, &arrayPtr); if (varPtr == NULL) { TRACE_ERROR(interp); goto gotError; } doArrayMake: if (varPtr && !TclIsVarArray(varPtr)) { if (TclIsVarArrayElement(varPtr) || !TclIsVarUndefined(varPtr)) { /* * Either an array element, or a scalar: lose! */ TclObjVarErrMsg(interp, part1Ptr, NULL, "array set", "variable isn't array", opnd); DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "TCL", "WRITE", "ARRAY", NULL); CACHE_STACK_INFO(); TRACE_ERROR(interp); goto gotError; } TclSetVarArray(varPtr); varPtr->value.tablePtr = ckalloc(sizeof(TclVarHashTable)); TclInitVarHashTable(varPtr->value.tablePtr, TclGetVarNsPtr(varPtr)); #ifdef TCL_COMPILE_DEBUG TRACE_APPEND(("done\n")); } else { TRACE_APPEND(("nothing to do\n")); #endif } NEXT_INST_V(pcAdjustment, cleanup, 0); /* * End of INST_ARRAY instructions. * ----------------------------------------------------------------- * Start of variable linking instructions. */ { Var *otherPtr; CallFrame *framePtr, *savedFramePtr; Tcl_Namespace *nsPtr; Namespace *savedNsPtr; case INST_UPVAR: TRACE(("%d %.30s %.30s => ", TclGetInt4AtPtr(pc+1), O2S(OBJ_UNDER_TOS), O2S(OBJ_AT_TOS))); if (TclObjGetFrame(interp, OBJ_UNDER_TOS, &framePtr) == -1) { TRACE_ERROR(interp); goto gotError; } /* * Locate the other variable. */ savedFramePtr = iPtr->varFramePtr; iPtr->varFramePtr = framePtr; otherPtr = TclObjLookupVarEx(interp, OBJ_AT_TOS, NULL, TCL_LEAVE_ERR_MSG, "access", /*createPart1*/ 1, /*createPart2*/ 1, &varPtr); iPtr->varFramePtr = savedFramePtr; if (!otherPtr) { TRACE_ERROR(interp); goto gotError; } goto doLinkVars; case INST_NSUPVAR: TRACE(("%d %.30s %.30s => ", TclGetInt4AtPtr(pc+1), O2S(OBJ_UNDER_TOS), O2S(OBJ_AT_TOS))); if (TclGetNamespaceFromObj(interp, OBJ_UNDER_TOS, &nsPtr) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } /* * Locate the other variable. */ savedNsPtr = iPtr->varFramePtr->nsPtr; iPtr->varFramePtr->nsPtr = (Namespace *) nsPtr; otherPtr = TclObjLookupVarEx(interp, OBJ_AT_TOS, NULL, (TCL_NAMESPACE_ONLY|TCL_LEAVE_ERR_MSG|TCL_AVOID_RESOLVERS), "access", /*createPart1*/ 1, /*createPart2*/ 1, &varPtr); iPtr->varFramePtr->nsPtr = savedNsPtr; if (!otherPtr) { TRACE_ERROR(interp); goto gotError; } goto doLinkVars; case INST_VARIABLE: TRACE(("%d, %.30s => ", TclGetInt4AtPtr(pc+1), O2S(OBJ_AT_TOS))); otherPtr = TclObjLookupVarEx(interp, OBJ_AT_TOS, NULL, (TCL_NAMESPACE_ONLY | TCL_LEAVE_ERR_MSG), "access", /*createPart1*/ 1, /*createPart2*/ 1, &varPtr); if (!otherPtr) { TRACE_ERROR(interp); goto gotError; } /* * Do the [variable] magic. */ TclSetVarNamespaceVar(otherPtr); doLinkVars: /* * If we are here, the local variable has already been created: do the * little work of TclPtrMakeUpvar that remains to be done right here * if there are no errors; otherwise, let it handle the case. */ opnd = TclGetInt4AtPtr(pc+1); varPtr = LOCAL(opnd); if ((varPtr != otherPtr) && !TclIsVarTraced(varPtr) && (TclIsVarUndefined(varPtr) || TclIsVarLink(varPtr))) { if (!TclIsVarUndefined(varPtr)) { /* * Then it is a defined link. */ Var *linkPtr = varPtr->value.linkPtr; if (linkPtr == otherPtr) { TRACE_APPEND(("already linked\n")); NEXT_INST_F(5, 1, 0); } if (TclIsVarInHash(linkPtr)) { VarHashRefCount(linkPtr)--; if (TclIsVarUndefined(linkPtr)) { TclCleanupVar(linkPtr, NULL); } } } TclSetVarLink(varPtr); varPtr->value.linkPtr = otherPtr; if (TclIsVarInHash(otherPtr)) { VarHashRefCount(otherPtr)++; } } else if (TclPtrObjMakeUpvarIdx(interp, otherPtr, NULL, 0, opnd) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } /* * Do not pop the namespace or frame index, it may be needed for other * variables - and [variable] did not push it at all. */ TRACE_APPEND(("link made\n")); NEXT_INST_F(5, 1, 0); } /* * End of variable linking instructions. * ----------------------------------------------------------------- */ case INST_JUMP1: opnd = TclGetInt1AtPtr(pc+1); TRACE(("%d => new pc %u\n", opnd, (unsigned)(pc + opnd - codePtr->codeStart))); NEXT_INST_F(opnd, 0, 0); case INST_JUMP4: opnd = TclGetInt4AtPtr(pc+1); TRACE(("%d => new pc %u\n", opnd, (unsigned)(pc + opnd - codePtr->codeStart))); NEXT_INST_F(opnd, 0, 0); { int jmpOffset[2], b; /* TODO: consider rewrite so we don't compute the offset we're not * going to take. */ case INST_JUMP_FALSE4: jmpOffset[0] = TclGetInt4AtPtr(pc+1); /* FALSE offset */ jmpOffset[1] = 5; /* TRUE offset */ goto doCondJump; case INST_JUMP_TRUE4: jmpOffset[0] = 5; jmpOffset[1] = TclGetInt4AtPtr(pc+1); goto doCondJump; case INST_JUMP_FALSE1: jmpOffset[0] = TclGetInt1AtPtr(pc+1); jmpOffset[1] = 2; goto doCondJump; case INST_JUMP_TRUE1: jmpOffset[0] = 2; jmpOffset[1] = TclGetInt1AtPtr(pc+1); doCondJump: valuePtr = OBJ_AT_TOS; TRACE(("%d => ", jmpOffset[ (*pc==INST_JUMP_FALSE1 || *pc==INST_JUMP_FALSE4) ? 0 : 1])); /* TODO - check claim that taking address of b harms performance */ /* TODO - consider optimization search for constants */ if (TclGetBooleanFromObj(interp, valuePtr, &b) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } #ifdef TCL_COMPILE_DEBUG if (b) { if ((*pc == INST_JUMP_TRUE1) || (*pc == INST_JUMP_TRUE4)) { TRACE_APPEND(("%.20s true, new pc %u\n", O2S(valuePtr), (unsigned)(pc + jmpOffset[1] - codePtr->codeStart))); } else { TRACE_APPEND(("%.20s true\n", O2S(valuePtr))); } } else { if ((*pc == INST_JUMP_TRUE1) || (*pc == INST_JUMP_TRUE4)) { TRACE_APPEND(("%.20s false\n", O2S(valuePtr))); } else { TRACE_APPEND(("%.20s false, new pc %u\n", O2S(valuePtr), (unsigned)(pc + jmpOffset[0] - codePtr->codeStart))); } } #endif NEXT_INST_F(jmpOffset[b], 1, 0); } case INST_JUMP_TABLE: { Tcl_HashEntry *hPtr; JumptableInfo *jtPtr; /* * Jump to location looked up in a hashtable; fall through to next * instr if lookup fails. */ opnd = TclGetInt4AtPtr(pc+1); jtPtr = (JumptableInfo *) codePtr->auxDataArrayPtr[opnd].clientData; TRACE(("%d \"%.20s\" => ", opnd, O2S(OBJ_AT_TOS))); hPtr = Tcl_FindHashEntry(&jtPtr->hashTable, TclGetString(OBJ_AT_TOS)); if (hPtr != NULL) { int jumpOffset = PTR2INT(Tcl_GetHashValue(hPtr)); TRACE_APPEND(("found in table, new pc %u\n", (unsigned)(pc - codePtr->codeStart + jumpOffset))); NEXT_INST_F(jumpOffset, 1, 0); } else { TRACE_APPEND(("not found in table\n")); NEXT_INST_F(5, 1, 0); } } /* * These two instructions are now redundant: the complete logic of the LOR * and LAND is now handled by the expression compiler. */ case INST_LOR: case INST_LAND: { /* * Operands must be boolean or numeric. No int->double conversions are * performed. */ int i1, i2, iResult; value2Ptr = OBJ_AT_TOS; valuePtr = OBJ_UNDER_TOS; if (TclGetBooleanFromObj(NULL, valuePtr, &i1) != TCL_OK) { TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(valuePtr), (valuePtr->typePtr? valuePtr->typePtr->name : "null"))); DECACHE_STACK_INFO(); IllegalExprOperandType(interp, pc, valuePtr); CACHE_STACK_INFO(); goto gotError; } if (TclGetBooleanFromObj(NULL, value2Ptr, &i2) != TCL_OK) { TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(value2Ptr), (value2Ptr->typePtr? value2Ptr->typePtr->name : "null"))); DECACHE_STACK_INFO(); IllegalExprOperandType(interp, pc, value2Ptr); CACHE_STACK_INFO(); goto gotError; } if (*pc == INST_LOR) { iResult = (i1 || i2); } else { iResult = (i1 && i2); } objResultPtr = TCONST(iResult); TRACE(("%.20s %.20s => %d\n", O2S(valuePtr),O2S(value2Ptr),iResult)); NEXT_INST_F(1, 2, 1); } /* * ----------------------------------------------------------------- * Start of general introspector instructions. */ case INST_NS_CURRENT: { Namespace *currNsPtr = (Namespace *) TclGetCurrentNamespace(interp); if (currNsPtr == (Namespace *) TclGetGlobalNamespace(interp)) { TclNewLiteralStringObj(objResultPtr, "::"); } else { TclNewStringObj(objResultPtr, currNsPtr->fullName, strlen(currNsPtr->fullName)); } TRACE_WITH_OBJ(("=> "), objResultPtr); NEXT_INST_F(1, 0, 1); } case INST_COROUTINE_NAME: { CoroutineData *corPtr = iPtr->execEnvPtr->corPtr; TclNewObj(objResultPtr); if (corPtr && !(corPtr->cmdPtr->flags & CMD_IS_DELETED)) { Tcl_GetCommandFullName(interp, (Tcl_Command) corPtr->cmdPtr, objResultPtr); } TRACE_WITH_OBJ(("=> "), objResultPtr); NEXT_INST_F(1, 0, 1); } case INST_INFO_LEVEL_NUM: TclNewIntObj(objResultPtr, iPtr->varFramePtr->level); TRACE_WITH_OBJ(("=> "), objResultPtr); NEXT_INST_F(1, 0, 1); case INST_INFO_LEVEL_ARGS: { int level; register CallFrame *framePtr = iPtr->varFramePtr; register CallFrame *rootFramePtr = iPtr->rootFramePtr; TRACE(("\"%.30s\" => ", O2S(OBJ_AT_TOS))); if (TclGetIntFromObj(interp, OBJ_AT_TOS, &level) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } if (level <= 0) { level += framePtr->level; } for (; (framePtr->level!=level) && (framePtr!=rootFramePtr) ; framePtr = framePtr->callerVarPtr) { /* Empty loop body */ } if (framePtr == rootFramePtr) { Tcl_SetObjResult(interp, Tcl_ObjPrintf( "bad level \"%s\"", TclGetString(OBJ_AT_TOS))); TRACE_ERROR(interp); DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "STACK_LEVEL", TclGetString(OBJ_AT_TOS), NULL); CACHE_STACK_INFO(); goto gotError; } objResultPtr = Tcl_NewListObj(framePtr->objc, framePtr->objv); TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_F(1, 1, 1); } { Tcl_Command cmd, origCmd; case INST_RESOLVE_COMMAND: cmd = Tcl_GetCommandFromObj(interp, OBJ_AT_TOS); TclNewObj(objResultPtr); if (cmd != NULL) { Tcl_GetCommandFullName(interp, cmd, objResultPtr); } TRACE_WITH_OBJ(("\"%.20s\" => ", O2S(OBJ_AT_TOS)), objResultPtr); NEXT_INST_F(1, 1, 1); case INST_ORIGIN_COMMAND: TRACE(("\"%.30s\" => ", O2S(OBJ_AT_TOS))); cmd = Tcl_GetCommandFromObj(interp, OBJ_AT_TOS); if (cmd == NULL) { Tcl_SetObjResult(interp, Tcl_ObjPrintf( "invalid command name \"%s\"", TclGetString(OBJ_AT_TOS))); DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "COMMAND", TclGetString(OBJ_AT_TOS), NULL); CACHE_STACK_INFO(); TRACE_APPEND(("ERROR: not command\n")); goto gotError; } origCmd = TclGetOriginalCommand(cmd); if (origCmd == NULL) { origCmd = cmd; } TclNewObj(objResultPtr); Tcl_GetCommandFullName(interp, origCmd, objResultPtr); TRACE_APPEND(("\"%.30s\"", O2S(OBJ_AT_TOS))); NEXT_INST_F(1, 1, 1); } /* * ----------------------------------------------------------------- * Start of TclOO support instructions. */ { Object *oPtr; CallFrame *framePtr; CallContext *contextPtr; int skip, newDepth; case INST_TCLOO_SELF: framePtr = iPtr->varFramePtr; if (framePtr == NULL || !(framePtr->isProcCallFrame & FRAME_IS_METHOD)) { TRACE(("=> ERROR: no TclOO call context\n")); Tcl_SetObjResult(interp, Tcl_NewStringObj( "self may only be called from inside a method", -1)); DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "TCL", "OO", "CONTEXT_REQUIRED", NULL); CACHE_STACK_INFO(); goto gotError; } contextPtr = framePtr->clientData; /* * Call out to get the name; it's expensive to compute but cached. */ objResultPtr = TclOOObjectName(interp, contextPtr->oPtr); TRACE_WITH_OBJ(("=> "), objResultPtr); NEXT_INST_F(1, 0, 1); case INST_TCLOO_NEXT_CLASS: opnd = TclGetUInt1AtPtr(pc+1); framePtr = iPtr->varFramePtr; valuePtr = OBJ_AT_DEPTH(opnd - 2); objv = &OBJ_AT_DEPTH(opnd - 1); skip = 2; TRACE(("%d => ", opnd)); if (framePtr == NULL || !(framePtr->isProcCallFrame & FRAME_IS_METHOD)) { TRACE_APPEND(("ERROR: no TclOO call context\n")); Tcl_SetObjResult(interp, Tcl_NewStringObj( "nextto may only be called from inside a method", -1)); DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "TCL", "OO", "CONTEXT_REQUIRED", NULL); CACHE_STACK_INFO(); goto gotError; } contextPtr = framePtr->clientData; oPtr = (Object *) Tcl_GetObjectFromObj(interp, valuePtr); if (oPtr == NULL) { TRACE_APPEND(("ERROR: \"%.30s\" not object\n", O2S(valuePtr))); goto gotError; } else { Class *classPtr = oPtr->classPtr; struct MInvoke *miPtr; int i; const char *methodType; if (classPtr == NULL) { TRACE_APPEND(("ERROR: \"%.30s\" not class\n", O2S(valuePtr))); Tcl_SetObjResult(interp, Tcl_ObjPrintf( "\"%s\" is not a class", TclGetString(valuePtr))); DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "TCL", "OO", "CLASS_REQUIRED", NULL); CACHE_STACK_INFO(); goto gotError; } for (i=contextPtr->index+1 ; icallPtr->numChain ; i++) { miPtr = contextPtr->callPtr->chain + i; if (!miPtr->isFilter && miPtr->mPtr->declaringClassPtr == classPtr) { newDepth = i; #ifdef TCL_COMPILE_DEBUG if (tclTraceExec >= 2) { if (traceInstructions) { strncpy(cmdNameBuf, TclGetString(objv[0]), 20); } else { fprintf(stdout, "%d: (%u) invoking ", iPtr->numLevels, (unsigned)(pc - codePtr->codeStart)); } for (i = 0; i < opnd; i++) { TclPrintObject(stdout, objv[i], 15); fprintf(stdout, " "); } fprintf(stdout, "\n"); fflush(stdout); } #endif /*TCL_COMPILE_DEBUG*/ goto doInvokeNext; } } if (contextPtr->callPtr->flags & CONSTRUCTOR) { methodType = "constructor"; } else if (contextPtr->callPtr->flags & DESTRUCTOR) { methodType = "destructor"; } else { methodType = "method"; } TRACE_APPEND(("ERROR: \"%.30s\" not on reachable chain\n", O2S(valuePtr))); for (i=contextPtr->index ; i>=0 ; i--) { miPtr = contextPtr->callPtr->chain + i; if (miPtr->isFilter || miPtr->mPtr->declaringClassPtr != classPtr) { continue; } Tcl_SetObjResult(interp, Tcl_ObjPrintf( "%s implementation by \"%s\" not reachable from here", methodType, TclGetString(valuePtr))); DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "TCL", "OO", "CLASS_NOT_REACHABLE", NULL); CACHE_STACK_INFO(); goto gotError; } Tcl_SetObjResult(interp, Tcl_ObjPrintf( "%s has no non-filter implementation by \"%s\"", methodType, TclGetString(valuePtr))); DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "TCL", "OO", "CLASS_NOT_THERE", NULL); CACHE_STACK_INFO(); goto gotError; } case INST_TCLOO_NEXT: opnd = TclGetUInt1AtPtr(pc+1); objv = &OBJ_AT_DEPTH(opnd - 1); framePtr = iPtr->varFramePtr; skip = 1; TRACE(("%d => ", opnd)); if (framePtr == NULL || !(framePtr->isProcCallFrame & FRAME_IS_METHOD)) { TRACE_APPEND(("ERROR: no TclOO call context\n")); Tcl_SetObjResult(interp, Tcl_NewStringObj( "next may only be called from inside a method", -1)); DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "TCL", "OO", "CONTEXT_REQUIRED", NULL); CACHE_STACK_INFO(); goto gotError; } contextPtr = framePtr->clientData; newDepth = contextPtr->index + 1; if (newDepth >= contextPtr->callPtr->numChain) { /* * We're at the end of the chain; generate an error message unless * the interpreter is being torn down, in which case we might be * getting here because of methods/destructors doing a [next] (or * equivalent) unexpectedly. */ const char *methodType; if (contextPtr->callPtr->flags & CONSTRUCTOR) { methodType = "constructor"; } else if (contextPtr->callPtr->flags & DESTRUCTOR) { methodType = "destructor"; } else { methodType = "method"; } TRACE_APPEND(("ERROR: no TclOO next impl\n")); Tcl_SetObjResult(interp, Tcl_ObjPrintf( "no next %s implementation", methodType)); DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "TCL", "OO", "NOTHING_NEXT", NULL); CACHE_STACK_INFO(); goto gotError; #ifdef TCL_COMPILE_DEBUG } else if (tclTraceExec >= 2) { int i; if (traceInstructions) { strncpy(cmdNameBuf, TclGetString(objv[0]), 20); } else { fprintf(stdout, "%d: (%u) invoking ", iPtr->numLevels, (unsigned)(pc - codePtr->codeStart)); } for (i = 0; i < opnd; i++) { TclPrintObject(stdout, objv[i], 15); fprintf(stdout, " "); } fprintf(stdout, "\n"); fflush(stdout); #endif /*TCL_COMPILE_DEBUG*/ } doInvokeNext: bcFramePtr->data.tebc.pc = (char *) pc; iPtr->cmdFramePtr = bcFramePtr; if (iPtr->flags & INTERP_DEBUG_FRAME) { ArgumentBCEnter(interp, codePtr, TD, pc, opnd, objv); } pcAdjustment = 2; cleanup = opnd; DECACHE_STACK_INFO(); iPtr->varFramePtr = framePtr->callerVarPtr; pc += pcAdjustment; TEBC_YIELD(); TclPushTailcallPoint(interp); oPtr = contextPtr->oPtr; if (oPtr->flags & FILTER_HANDLING) { TclNRAddCallback(interp, FinalizeOONextFilter, framePtr, contextPtr, INT2PTR(contextPtr->index), INT2PTR(contextPtr->skip)); } else { TclNRAddCallback(interp, FinalizeOONext, framePtr, contextPtr, INT2PTR(contextPtr->index), INT2PTR(contextPtr->skip)); } contextPtr->skip = skip; contextPtr->index = newDepth; if (contextPtr->callPtr->chain[newDepth].isFilter || contextPtr->callPtr->flags & FILTER_HANDLING) { oPtr->flags |= FILTER_HANDLING; } else { oPtr->flags &= ~FILTER_HANDLING; } { register Method *const mPtr = contextPtr->callPtr->chain[newDepth].mPtr; return mPtr->typePtr->callProc(mPtr->clientData, interp, (Tcl_ObjectContext) contextPtr, opnd, objv); } case INST_TCLOO_IS_OBJECT: oPtr = (Object *) Tcl_GetObjectFromObj(interp, OBJ_AT_TOS); objResultPtr = TCONST(oPtr != NULL ? 1 : 0); TRACE_WITH_OBJ(("%.30s => ", O2S(OBJ_AT_TOS)), objResultPtr); NEXT_INST_F(1, 1, 1); case INST_TCLOO_CLASS: oPtr = (Object *) Tcl_GetObjectFromObj(interp, OBJ_AT_TOS); if (oPtr == NULL) { TRACE(("%.30s => ERROR: not object\n", O2S(OBJ_AT_TOS))); goto gotError; } objResultPtr = TclOOObjectName(interp, oPtr->selfCls->thisPtr); TRACE_WITH_OBJ(("%.30s => ", O2S(OBJ_AT_TOS)), objResultPtr); NEXT_INST_F(1, 1, 1); case INST_TCLOO_NS: oPtr = (Object *) Tcl_GetObjectFromObj(interp, OBJ_AT_TOS); if (oPtr == NULL) { TRACE(("%.30s => ERROR: not object\n", O2S(OBJ_AT_TOS))); goto gotError; } /* * TclOO objects *never* have the global namespace as their NS. */ TclNewStringObj(objResultPtr, oPtr->namespacePtr->fullName, strlen(oPtr->namespacePtr->fullName)); TRACE_WITH_OBJ(("%.30s => ", O2S(OBJ_AT_TOS)), objResultPtr); NEXT_INST_F(1, 1, 1); } /* * End of TclOO support instructions. * ----------------------------------------------------------------- * Start of INST_LIST and related instructions. */ { int index, numIndices, fromIdx, toIdx; int nocase, match, length2, cflags, s1len, s2len; const char *s1, *s2; case INST_LIST: /* * Pop the opnd (objc) top stack elements into a new list obj and then * decrement their ref counts. */ opnd = TclGetUInt4AtPtr(pc+1); objResultPtr = Tcl_NewListObj(opnd, &OBJ_AT_DEPTH(opnd-1)); TRACE_WITH_OBJ(("%u => ", opnd), objResultPtr); NEXT_INST_V(5, opnd, 1); case INST_LIST_LENGTH: TRACE(("\"%.30s\" => ", O2S(OBJ_AT_TOS))); if (TclListObjLength(interp, OBJ_AT_TOS, &length) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } TclNewIntObj(objResultPtr, length); TRACE_APPEND(("%d\n", length)); NEXT_INST_F(1, 1, 1); case INST_LIST_INDEX: /* lindex with objc == 3 */ value2Ptr = OBJ_AT_TOS; valuePtr = OBJ_UNDER_TOS; TRACE(("\"%.30s\" \"%.30s\" => ", O2S(valuePtr), O2S(value2Ptr))); /* * Extract the desired list element. */ if ((TclListObjGetElements(interp, valuePtr, &objc, &objv) == TCL_OK) && (value2Ptr->typePtr != &tclListType) && (TclGetIntForIndexM(NULL , value2Ptr, objc-1, &index) == TCL_OK)) { TclDecrRefCount(value2Ptr); tosPtr--; pcAdjustment = 1; goto lindexFastPath; } objResultPtr = TclLindexList(interp, valuePtr, value2Ptr); if (!objResultPtr) { TRACE_ERROR(interp); goto gotError; } /* * Stash the list element on the stack. */ TRACE_APPEND(("\"%.30s\"\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, -1); /* Already has the correct refCount */ case INST_LIST_INDEX_IMM: /* lindex with objc==3 and index in bytecode * stream */ /* * Pop the list and get the index. */ valuePtr = OBJ_AT_TOS; opnd = TclGetInt4AtPtr(pc+1); TRACE(("\"%.30s\" %d => ", O2S(valuePtr), opnd)); /* * Get the contents of the list, making sure that it really is a list * in the process. */ if (TclListObjGetElements(interp, valuePtr, &objc, &objv) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } /* Decode end-offset index values. */ index = TclIndexDecode(opnd, objc - 1); pcAdjustment = 5; lindexFastPath: if (index >= 0 && index < objc) { objResultPtr = objv[index]; } else { TclNewObj(objResultPtr); } TRACE_APPEND(("\"%.30s\"\n", O2S(objResultPtr))); NEXT_INST_F(pcAdjustment, 1, 1); case INST_LIST_INDEX_MULTI: /* 'lindex' with multiple index args */ /* * Determine the count of index args. */ opnd = TclGetUInt4AtPtr(pc+1); numIndices = opnd-1; /* * Do the 'lindex' operation. */ TRACE(("%d => ", opnd)); objResultPtr = TclLindexFlat(interp, OBJ_AT_DEPTH(numIndices), numIndices, &OBJ_AT_DEPTH(numIndices - 1)); if (!objResultPtr) { TRACE_ERROR(interp); goto gotError; } /* * Set result. */ TRACE_APPEND(("\"%.30s\"\n", O2S(objResultPtr))); NEXT_INST_V(5, opnd, -1); case INST_LSET_FLAT: /* * Lset with 3, 5, or more args. Get the number of index args. */ opnd = TclGetUInt4AtPtr(pc + 1); numIndices = opnd - 2; TRACE(("%d => ", opnd)); /* * Get the old value of variable, and remove the stack ref. This is * safe because the variable still references the object; the ref * count will never go zero here - we can use the smaller macro * Tcl_DecrRefCount. */ valuePtr = POP_OBJECT(); Tcl_DecrRefCount(valuePtr); /* This one should be done here */ /* * Compute the new variable value. */ objResultPtr = TclLsetFlat(interp, valuePtr, numIndices, &OBJ_AT_DEPTH(numIndices), OBJ_AT_TOS); if (!objResultPtr) { TRACE_ERROR(interp); goto gotError; } /* * Set result. */ TRACE_APPEND(("\"%.30s\"\n", O2S(objResultPtr))); NEXT_INST_V(5, numIndices+1, -1); case INST_LSET_LIST: /* 'lset' with 4 args */ /* * Get the old value of variable, and remove the stack ref. This is * safe because the variable still references the object; the ref * count will never go zero here - we can use the smaller macro * Tcl_DecrRefCount. */ objPtr = POP_OBJECT(); Tcl_DecrRefCount(objPtr); /* This one should be done here. */ /* * Get the new element value, and the index list. */ valuePtr = OBJ_AT_TOS; value2Ptr = OBJ_UNDER_TOS; TRACE(("\"%.30s\" \"%.30s\" \"%.30s\" => ", O2S(value2Ptr), O2S(valuePtr), O2S(objPtr))); /* * Compute the new variable value. */ objResultPtr = TclLsetList(interp, objPtr, value2Ptr, valuePtr); if (!objResultPtr) { TRACE_ERROR(interp); goto gotError; } /* * Set result. */ TRACE_APPEND(("\"%.30s\"\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, -1); case INST_LIST_RANGE_IMM: /* lrange with objc==4 and both indices in * bytecode stream */ /* * Pop the list and get the indices. */ valuePtr = OBJ_AT_TOS; fromIdx = TclGetInt4AtPtr(pc+1); toIdx = TclGetInt4AtPtr(pc+5); TRACE(("\"%.30s\" %d %d => ", O2S(valuePtr), TclGetInt4AtPtr(pc+1), TclGetInt4AtPtr(pc+5))); /* * Get the length of the list, making sure that it really is a list * in the process. */ if (TclListObjLength(interp, valuePtr, &objc) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } /* * Skip a lot of work if we're about to throw the result away (common * with uses of [lassign]). */ #ifndef TCL_COMPILE_DEBUG if (*(pc+9) == INST_POP) { NEXT_INST_F(10, 1, 0); } #endif /* Every range of an empty list is an empty list */ if (objc == 0) { TRACE_APPEND(("\n")); NEXT_INST_F(9, 0, 0); } /* Decode index value operands. */ /* assert ( toIdx != TCL_INDEX_AFTER); * * Extra safety for legacy bytecodes: */ if (toIdx == TCL_INDEX_AFTER) { toIdx = TCL_INDEX_END; } if ((toIdx == TCL_INDEX_BEFORE) || (fromIdx == TCL_INDEX_AFTER)) { emptyList: objResultPtr = Tcl_NewObj(); TRACE_APPEND(("\"%.30s\"", O2S(objResultPtr))); NEXT_INST_F(9, 1, 1); } toIdx = TclIndexDecode(toIdx, objc - 1); if (toIdx < 0) { goto emptyList; } else if (toIdx >= objc) { toIdx = objc - 1; } assert ( toIdx >= 0 && toIdx < objc); /* assert ( fromIdx != TCL_INDEX_BEFORE ); * * Extra safety for legacy bytecodes: */ if (fromIdx == TCL_INDEX_BEFORE) { fromIdx = TCL_INDEX_START; } fromIdx = TclIndexDecode(fromIdx, objc - 1); objResultPtr = TclListObjRange(valuePtr, fromIdx, toIdx); TRACE_APPEND(("\"%.30s\"", O2S(objResultPtr))); NEXT_INST_F(9, 1, 1); case INST_LIST_IN: case INST_LIST_NOT_IN: /* Basic list containment operators. */ value2Ptr = OBJ_AT_TOS; valuePtr = OBJ_UNDER_TOS; s1 = TclGetStringFromObj(valuePtr, &s1len); TRACE(("\"%.30s\" \"%.30s\" => ", O2S(valuePtr), O2S(value2Ptr))); if (TclListObjLength(interp, value2Ptr, &length) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } match = 0; if (length > 0) { int i = 0; Tcl_Obj *o; /* * An empty list doesn't match anything. */ do { Tcl_ListObjIndex(NULL, value2Ptr, i, &o); if (o != NULL) { s2 = TclGetStringFromObj(o, &s2len); } else { s2 = ""; s2len = 0; } if (s1len == s2len) { match = (memcmp(s1, s2, s1len) == 0); } i++; } while (i < length && match == 0); } if (*pc == INST_LIST_NOT_IN) { match = !match; } TRACE_APPEND(("%d\n", match)); /* * Peep-hole optimisation: if you're about to jump, do jump from here. * We're saving the effort of pushing a boolean value only to pop it * for branching. */ JUMP_PEEPHOLE_F(match, 1, 2); case INST_LIST_CONCAT: value2Ptr = OBJ_AT_TOS; valuePtr = OBJ_UNDER_TOS; TRACE(("\"%.30s\" \"%.30s\" => ", O2S(valuePtr), O2S(value2Ptr))); if (Tcl_IsShared(valuePtr)) { objResultPtr = Tcl_DuplicateObj(valuePtr); if (Tcl_ListObjAppendList(interp, objResultPtr, value2Ptr) != TCL_OK) { TRACE_ERROR(interp); TclDecrRefCount(objResultPtr); goto gotError; } TRACE_APPEND(("\"%.30s\"\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } else { if (Tcl_ListObjAppendList(interp, valuePtr, value2Ptr) != TCL_OK){ TRACE_ERROR(interp); goto gotError; } TRACE_APPEND(("\"%.30s\"\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } /* * End of INST_LIST and related instructions. * ----------------------------------------------------------------- * Start of string-related instructions. */ case INST_STR_EQ: case INST_STR_NEQ: /* String (in)equality check */ case INST_STR_CMP: /* String compare. */ stringCompare: value2Ptr = OBJ_AT_TOS; valuePtr = OBJ_UNDER_TOS; { int checkEq = ((*pc == INST_EQ) || (*pc == INST_NEQ) || (*pc == INST_STR_EQ) || (*pc == INST_STR_NEQ)); match = TclStringCmp(valuePtr, value2Ptr, checkEq, 0, -1); } /* * Make sure only -1,0,1 is returned * TODO: consider peephole opt. */ if (*pc != INST_STR_CMP) { /* * Take care of the opcodes that goto'ed into here. */ switch (*pc) { case INST_STR_EQ: case INST_EQ: match = (match == 0); break; case INST_STR_NEQ: case INST_NEQ: match = (match != 0); break; case INST_LT: match = (match < 0); break; case INST_GT: match = (match > 0); break; case INST_LE: match = (match <= 0); break; case INST_GE: match = (match >= 0); break; } } TRACE(("\"%.20s\" \"%.20s\" => %d\n", O2S(valuePtr), O2S(value2Ptr), (match < 0 ? -1 : match > 0 ? 1 : 0))); JUMP_PEEPHOLE_F(match, 1, 2); case INST_STR_LEN: valuePtr = OBJ_AT_TOS; length = Tcl_GetCharLength(valuePtr); TclNewIntObj(objResultPtr, length); TRACE(("\"%.20s\" => %d\n", O2S(valuePtr), length)); NEXT_INST_F(1, 1, 1); case INST_STR_UPPER: valuePtr = OBJ_AT_TOS; TRACE(("\"%.20s\" => ", O2S(valuePtr))); if (Tcl_IsShared(valuePtr)) { s1 = TclGetStringFromObj(valuePtr, &length); TclNewStringObj(objResultPtr, s1, length); length = Tcl_UtfToUpper(TclGetString(objResultPtr)); Tcl_SetObjLength(objResultPtr, length); TRACE_APPEND(("\"%.20s\"\n", O2S(objResultPtr))); NEXT_INST_F(1, 1, 1); } else { length = Tcl_UtfToUpper(TclGetString(valuePtr)); Tcl_SetObjLength(valuePtr, length); TclFreeIntRep(valuePtr); TRACE_APPEND(("\"%.20s\"\n", O2S(valuePtr))); NEXT_INST_F(1, 0, 0); } case INST_STR_LOWER: valuePtr = OBJ_AT_TOS; TRACE(("\"%.20s\" => ", O2S(valuePtr))); if (Tcl_IsShared(valuePtr)) { s1 = TclGetStringFromObj(valuePtr, &length); TclNewStringObj(objResultPtr, s1, length); length = Tcl_UtfToLower(TclGetString(objResultPtr)); Tcl_SetObjLength(objResultPtr, length); TRACE_APPEND(("\"%.20s\"\n", O2S(objResultPtr))); NEXT_INST_F(1, 1, 1); } else { length = Tcl_UtfToLower(TclGetString(valuePtr)); Tcl_SetObjLength(valuePtr, length); TclFreeIntRep(valuePtr); TRACE_APPEND(("\"%.20s\"\n", O2S(valuePtr))); NEXT_INST_F(1, 0, 0); } case INST_STR_TITLE: valuePtr = OBJ_AT_TOS; TRACE(("\"%.20s\" => ", O2S(valuePtr))); if (Tcl_IsShared(valuePtr)) { s1 = TclGetStringFromObj(valuePtr, &length); TclNewStringObj(objResultPtr, s1, length); length = Tcl_UtfToTitle(TclGetString(objResultPtr)); Tcl_SetObjLength(objResultPtr, length); TRACE_APPEND(("\"%.20s\"\n", O2S(objResultPtr))); NEXT_INST_F(1, 1, 1); } else { length = Tcl_UtfToTitle(TclGetString(valuePtr)); Tcl_SetObjLength(valuePtr, length); TclFreeIntRep(valuePtr); TRACE_APPEND(("\"%.20s\"\n", O2S(valuePtr))); NEXT_INST_F(1, 0, 0); } case INST_STR_INDEX: value2Ptr = OBJ_AT_TOS; valuePtr = OBJ_UNDER_TOS; TRACE(("\"%.20s\" %.20s => ", O2S(valuePtr), O2S(value2Ptr))); /* * Get char length to calulate what 'end' means. */ length = Tcl_GetCharLength(valuePtr); if (TclGetIntForIndexM(interp, value2Ptr, length-1, &index)!=TCL_OK) { TRACE_ERROR(interp); goto gotError; } if ((index < 0) || (index >= length)) { TclNewObj(objResultPtr); } else if (TclIsPureByteArray(valuePtr)) { objResultPtr = Tcl_NewByteArrayObj( Tcl_GetByteArrayFromObj(valuePtr, NULL)+index, 1); } else if (valuePtr->bytes && length == valuePtr->length) { objResultPtr = Tcl_NewStringObj((const char *) valuePtr->bytes+index, 1); } else { char buf[4]; int ch = Tcl_GetUniChar(valuePtr, index); /* * This could be: Tcl_NewUnicodeObj((const Tcl_UniChar *)&ch, 1) * but creating the object as a string seems to be faster in * practical use. */ if (ch == -1) { objResultPtr = Tcl_NewObj(); } else { length = Tcl_UniCharToUtf(ch, buf); if (!length) { length = Tcl_UniCharToUtf(-1, buf); } objResultPtr = Tcl_NewStringObj(buf, length); } } TRACE_APPEND(("\"%s\"\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); case INST_STR_RANGE: TRACE(("\"%.20s\" %.20s %.20s =>", O2S(OBJ_AT_DEPTH(2)), O2S(OBJ_UNDER_TOS), O2S(OBJ_AT_TOS))); length = Tcl_GetCharLength(OBJ_AT_DEPTH(2)) - 1; if (TclGetIntForIndexM(interp, OBJ_UNDER_TOS, length, &fromIdx) != TCL_OK || TclGetIntForIndexM(interp, OBJ_AT_TOS, length, &toIdx) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } if (fromIdx < 0) { fromIdx = 0; } if (toIdx >= length) { toIdx = length; } if (toIdx >= fromIdx) { objResultPtr = Tcl_GetRange(OBJ_AT_DEPTH(2), fromIdx, toIdx); } else { TclNewObj(objResultPtr); } TRACE_APPEND(("\"%.30s\"\n", O2S(objResultPtr))); NEXT_INST_V(1, 3, 1); case INST_STR_RANGE_IMM: valuePtr = OBJ_AT_TOS; fromIdx = TclGetInt4AtPtr(pc+1); toIdx = TclGetInt4AtPtr(pc+5); length = Tcl_GetCharLength(valuePtr); TRACE(("\"%.20s\" %d %d => ", O2S(valuePtr), fromIdx, toIdx)); /* Every range of an empty value is an empty value */ if (length == 0) { TRACE_APPEND(("\n")); NEXT_INST_F(9, 0, 0); } /* Decode index operands. */ /* assert ( toIdx != TCL_INDEX_BEFORE ); assert ( toIdx != TCL_INDEX_AFTER); * * Extra safety for legacy bytecodes: */ if (toIdx == TCL_INDEX_BEFORE) { goto emptyRange; } if (toIdx == TCL_INDEX_AFTER) { toIdx = TCL_INDEX_END; } toIdx = TclIndexDecode(toIdx, length - 1); if (toIdx < 0) { goto emptyRange; } else if (toIdx >= length) { toIdx = length - 1; } assert ( toIdx >= 0 && toIdx < length ); /* assert ( fromIdx != TCL_INDEX_BEFORE ); assert ( fromIdx != TCL_INDEX_AFTER); * * Extra safety for legacy bytecodes: */ if (fromIdx == TCL_INDEX_BEFORE) { fromIdx = TCL_INDEX_START; } if (fromIdx == TCL_INDEX_AFTER) { goto emptyRange; } fromIdx = TclIndexDecode(fromIdx, length - 1); if (fromIdx < 0) { fromIdx = 0; } if (fromIdx <= toIdx) { objResultPtr = Tcl_GetRange(valuePtr, fromIdx, toIdx); } else { emptyRange: TclNewObj(objResultPtr); } TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_F(9, 1, 1); { Tcl_UniChar *ustring1, *ustring2, *ustring3, *end, *p; int length3, endIdx; Tcl_Obj *value3Ptr; case INST_STR_REPLACE: value3Ptr = POP_OBJECT(); valuePtr = OBJ_AT_DEPTH(2); endIdx = Tcl_GetCharLength(valuePtr) - 1; TRACE(("\"%.20s\" %s %s \"%.20s\" => ", O2S(valuePtr), O2S(OBJ_UNDER_TOS), O2S(OBJ_AT_TOS), O2S(value3Ptr))); if (TclGetIntForIndexM(interp, OBJ_UNDER_TOS, endIdx, &fromIdx) != TCL_OK || TclGetIntForIndexM(interp, OBJ_AT_TOS, endIdx, &toIdx) != TCL_OK) { TclDecrRefCount(value3Ptr); TRACE_ERROR(interp); goto gotError; } TclDecrRefCount(OBJ_AT_TOS); (void) POP_OBJECT(); TclDecrRefCount(OBJ_AT_TOS); (void) POP_OBJECT(); if ((toIdx < 0) || (fromIdx > endIdx) || (toIdx < fromIdx)) { TRACE_APPEND(("\"%.30s\"\n", O2S(valuePtr))); TclDecrRefCount(value3Ptr); NEXT_INST_F(1, 0, 0); } if (fromIdx < 0) { fromIdx = 0; } if (toIdx > endIdx) { toIdx = endIdx; } if (fromIdx == 0 && toIdx == endIdx) { TclDecrRefCount(OBJ_AT_TOS); OBJ_AT_TOS = value3Ptr; TRACE_APPEND(("\"%.30s\"\n", O2S(value3Ptr))); NEXT_INST_F(1, 0, 0); } objResultPtr = TclStringReplace(interp, valuePtr, fromIdx, toIdx - fromIdx + 1, value3Ptr, TCL_STRING_IN_PLACE); if (objResultPtr == value3Ptr) { /* See [Bug 82e7f67325] */ TclDecrRefCount(OBJ_AT_TOS); OBJ_AT_TOS = value3Ptr; TRACE_APPEND(("\"%.30s\"\n", O2S(value3Ptr))); NEXT_INST_F(1, 0, 0); } TclDecrRefCount(value3Ptr); TRACE_APPEND(("\"%.30s\"\n", O2S(objResultPtr))); NEXT_INST_F(1, 1, 1); case INST_STR_MAP: valuePtr = OBJ_AT_TOS; /* "Main" string. */ value3Ptr = OBJ_UNDER_TOS; /* "Target" string. */ value2Ptr = OBJ_AT_DEPTH(2); /* "Source" string. */ if (value3Ptr == value2Ptr) { objResultPtr = valuePtr; goto doneStringMap; } else if (valuePtr == value2Ptr) { objResultPtr = value3Ptr; goto doneStringMap; } ustring1 = Tcl_GetUnicodeFromObj(valuePtr, &length); if (length == 0) { objResultPtr = valuePtr; goto doneStringMap; } ustring2 = Tcl_GetUnicodeFromObj(value2Ptr, &length2); if (length2 > length || length2 == 0) { objResultPtr = valuePtr; goto doneStringMap; } else if (length2 == length) { if (memcmp(ustring1, ustring2, sizeof(Tcl_UniChar) * length)) { objResultPtr = valuePtr; } else { objResultPtr = value3Ptr; } goto doneStringMap; } ustring3 = Tcl_GetUnicodeFromObj(value3Ptr, &length3); objResultPtr = Tcl_NewUnicodeObj(ustring1, 0); p = ustring1; end = ustring1 + length; for (; ustring1 < end; ustring1++) { if ((*ustring1 == *ustring2) && (length2==1 || memcmp(ustring1, ustring2, sizeof(Tcl_UniChar) * length2) == 0)) { if (p != ustring1) { Tcl_AppendUnicodeToObj(objResultPtr, p, ustring1-p); p = ustring1 + length2; } else { p += length2; } ustring1 = p - 1; Tcl_AppendUnicodeToObj(objResultPtr, ustring3, length3); } } if (p != ustring1) { /* * Put the rest of the unmapped chars onto result. */ Tcl_AppendUnicodeToObj(objResultPtr, p, ustring1 - p); } doneStringMap: TRACE_WITH_OBJ(("%.20s %.20s %.20s => ", O2S(value2Ptr), O2S(value3Ptr), O2S(valuePtr)), objResultPtr); NEXT_INST_V(1, 3, 1); case INST_STR_FIND: match = TclStringFirst(OBJ_UNDER_TOS, OBJ_AT_TOS, 0); TRACE(("%.20s %.20s => %d\n", O2S(OBJ_UNDER_TOS), O2S(OBJ_AT_TOS), match)); TclNewIntObj(objResultPtr, match); NEXT_INST_F(1, 2, 1); case INST_STR_FIND_LAST: match = TclStringLast(OBJ_UNDER_TOS, OBJ_AT_TOS, INT_MAX - 1); TRACE(("%.20s %.20s => %d\n", O2S(OBJ_UNDER_TOS), O2S(OBJ_AT_TOS), match)); TclNewIntObj(objResultPtr, match); NEXT_INST_F(1, 2, 1); case INST_STR_CLASS: opnd = TclGetInt1AtPtr(pc+1); valuePtr = OBJ_AT_TOS; TRACE(("%s \"%.30s\" => ", tclStringClassTable[opnd].name, O2S(valuePtr))); ustring1 = Tcl_GetUnicodeFromObj(valuePtr, &length); match = 1; if (length > 0) { end = ustring1 + length; for (p=ustring1 ; ptypePtr == &tclStringType) || (value2Ptr->typePtr == &tclStringType)) { Tcl_UniChar *ustring1, *ustring2; ustring1 = Tcl_GetUnicodeFromObj(valuePtr, &length); ustring2 = Tcl_GetUnicodeFromObj(value2Ptr, &length2); match = TclUniCharMatch(ustring1, length, ustring2, length2, nocase); } else if (TclIsPureByteArray(valuePtr) && !nocase) { unsigned char *bytes1, *bytes2; bytes1 = Tcl_GetByteArrayFromObj(valuePtr, &length); bytes2 = Tcl_GetByteArrayFromObj(value2Ptr, &length2); match = TclByteArrayMatch(bytes1, length, bytes2, length2, 0); } else { match = Tcl_StringCaseMatch(TclGetString(valuePtr), TclGetString(value2Ptr), nocase); } /* * Reuse value2Ptr object already on stack if possible. Adjustment is * 2 due to the nocase byte */ TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), match)); /* * Peep-hole optimisation: if you're about to jump, do jump from here. */ JUMP_PEEPHOLE_F(match, 2, 2); { const char *string1, *string2; int trim1, trim2; case INST_STR_TRIM_LEFT: valuePtr = OBJ_UNDER_TOS; /* String */ value2Ptr = OBJ_AT_TOS; /* TrimSet */ string2 = TclGetStringFromObj(value2Ptr, &length2); string1 = TclGetStringFromObj(valuePtr, &length); trim1 = TclTrimLeft(string1, length, string2, length2); trim2 = 0; goto createTrimmedString; case INST_STR_TRIM_RIGHT: valuePtr = OBJ_UNDER_TOS; /* String */ value2Ptr = OBJ_AT_TOS; /* TrimSet */ string2 = TclGetStringFromObj(value2Ptr, &length2); string1 = TclGetStringFromObj(valuePtr, &length); trim2 = TclTrimRight(string1, length, string2, length2); trim1 = 0; goto createTrimmedString; case INST_STR_TRIM: valuePtr = OBJ_UNDER_TOS; /* String */ value2Ptr = OBJ_AT_TOS; /* TrimSet */ string2 = TclGetStringFromObj(value2Ptr, &length2); string1 = TclGetStringFromObj(valuePtr, &length); trim1 = TclTrim(string1, length, string2, length2, &trim2); createTrimmedString: /* * Careful here; trim set often contains non-ASCII characters so we * take care when printing. [Bug 971cb4f1db] */ #ifdef TCL_COMPILE_DEBUG if (traceInstructions) { TRACE(("\"%.30s\" ", O2S(valuePtr))); TclPrintObject(stdout, value2Ptr, 30); printf(" => "); } #endif if (trim1 == 0 && trim2 == 0) { #ifdef TCL_COMPILE_DEBUG if (traceInstructions) { TclPrintObject(stdout, valuePtr, 30); printf("\n"); } #endif NEXT_INST_F(1, 1, 0); } else { objResultPtr = Tcl_NewStringObj(string1+trim1, length-trim1-trim2); #ifdef TCL_COMPILE_DEBUG if (traceInstructions) { TclPrintObject(stdout, objResultPtr, 30); printf("\n"); } #endif NEXT_INST_F(1, 2, 1); } } case INST_REGEXP: cflags = TclGetInt1AtPtr(pc+1); /* RE compile flages like NOCASE */ valuePtr = OBJ_AT_TOS; /* String */ value2Ptr = OBJ_UNDER_TOS; /* Pattern */ TRACE(("\"%.30s\" \"%.30s\" => ", O2S(valuePtr), O2S(value2Ptr))); /* * Compile and match the regular expression. */ { Tcl_RegExp regExpr = Tcl_GetRegExpFromObj(interp, value2Ptr, cflags); if (regExpr == NULL) { TRACE_ERROR(interp); goto gotError; } match = Tcl_RegExpExecObj(interp, regExpr, valuePtr, 0, 0, 0); if (match < 0) { TRACE_ERROR(interp); goto gotError; } } TRACE_APPEND(("%d\n", match)); /* * Peep-hole optimisation: if you're about to jump, do jump from here. * Adjustment is 2 due to the nocase byte. */ JUMP_PEEPHOLE_F(match, 2, 2); } /* * End of string-related instructions. * ----------------------------------------------------------------- * Start of numeric operator instructions. */ { ClientData ptr1, ptr2; int type1, type2; Tcl_WideInt w1, w2, wResult; case INST_NUM_TYPE: if (GetNumberFromObj(NULL, OBJ_AT_TOS, &ptr1, &type1) != TCL_OK) { type1 = 0; } else if (type1 == TCL_NUMBER_WIDE) { /* value is between LLONG_MIN and LLONG_MAX */ /* [string is integer] is -UINT_MAX to UINT_MAX range */ /* [string is wideinteger] is -ULLONG_MAX to ULLONG_MAX range */ int i; if (Tcl_GetIntFromObj(NULL, OBJ_AT_TOS, &i) == TCL_OK) { type1 = TCL_NUMBER_LONG; } } else if (type1 == TCL_NUMBER_BIG) { /* value is an integer outside the LLONG_MIN to LLONG_MAX range */ /* [string is wideinteger] is -ULLONG_MAX to ULLONG_MAX range */ Tcl_WideInt w; if (Tcl_GetWideIntFromObj(NULL, OBJ_AT_TOS, &w) == TCL_OK) { type1 = TCL_NUMBER_WIDE; } } TclNewIntObj(objResultPtr, type1); TRACE(("\"%.20s\" => %d\n", O2S(OBJ_AT_TOS), type1)); NEXT_INST_F(1, 1, 1); case INST_EQ: case INST_NEQ: case INST_LT: case INST_GT: case INST_LE: case INST_GE: { int iResult = 0, compare = 0; value2Ptr = OBJ_AT_TOS; valuePtr = OBJ_UNDER_TOS; /* Try to determine, without triggering generation of a string representation, whether one value is not a number. */ if (TclCheckEmptyString(valuePtr) > 0 || TclCheckEmptyString(value2Ptr) > 0) { goto stringCompare; } if (GetNumberFromObj(NULL, valuePtr, &ptr1, &type1) != TCL_OK || GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2) != TCL_OK) { /* * At least one non-numeric argument - compare as strings. */ goto stringCompare; } if (type1 == TCL_NUMBER_NAN || type2 == TCL_NUMBER_NAN) { /* * NaN arg: NaN != to everything, other compares are false. */ iResult = (*pc == INST_NEQ); goto foundResult; } if (valuePtr == value2Ptr) { compare = MP_EQ; goto convertComparison; } if ((type1 == TCL_NUMBER_WIDE) && (type2 == TCL_NUMBER_WIDE)) { w1 = *((const Tcl_WideInt *)ptr1); w2 = *((const Tcl_WideInt *)ptr2); compare = (w1 < w2) ? MP_LT : ((w1 > w2) ? MP_GT : MP_EQ); } else { compare = TclCompareTwoNumbers(valuePtr, value2Ptr); } /* * Turn comparison outcome into appropriate result for opcode. */ convertComparison: switch (*pc) { case INST_EQ: iResult = (compare == MP_EQ); break; case INST_NEQ: iResult = (compare != MP_EQ); break; case INST_LT: iResult = (compare == MP_LT); break; case INST_GT: iResult = (compare == MP_GT); break; case INST_LE: iResult = (compare != MP_GT); break; case INST_GE: iResult = (compare != MP_LT); break; } /* * Peep-hole optimisation: if you're about to jump, do jump from here. */ foundResult: TRACE(("\"%.20s\" \"%.20s\" => %d\n", O2S(valuePtr), O2S(value2Ptr), iResult)); JUMP_PEEPHOLE_F(iResult, 1, 2); } case INST_MOD: case INST_LSHIFT: case INST_RSHIFT: case INST_BITOR: case INST_BITXOR: case INST_BITAND: value2Ptr = OBJ_AT_TOS; valuePtr = OBJ_UNDER_TOS; if ((GetNumberFromObj(NULL, valuePtr, &ptr1, &type1) != TCL_OK) || (type1==TCL_NUMBER_DOUBLE) || (type1==TCL_NUMBER_NAN)) { TRACE(("%.20s %.20s => ILLEGAL 1st TYPE %s\n", O2S(valuePtr), O2S(value2Ptr), (valuePtr->typePtr? valuePtr->typePtr->name : "null"))); DECACHE_STACK_INFO(); IllegalExprOperandType(interp, pc, valuePtr); CACHE_STACK_INFO(); goto gotError; } if ((GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2) != TCL_OK) || (type2==TCL_NUMBER_DOUBLE) || (type2==TCL_NUMBER_NAN)) { TRACE(("%.20s %.20s => ILLEGAL 2nd TYPE %s\n", O2S(valuePtr), O2S(value2Ptr), (value2Ptr->typePtr? value2Ptr->typePtr->name : "null"))); DECACHE_STACK_INFO(); IllegalExprOperandType(interp, pc, value2Ptr); CACHE_STACK_INFO(); goto gotError; } /* * Check for common, simple case. */ if ((type1 == TCL_NUMBER_WIDE) && (type2 == TCL_NUMBER_WIDE)) { w1 = *((const Tcl_WideInt *)ptr1); w2 = *((const Tcl_WideInt *)ptr2); switch (*pc) { case INST_MOD: if (w2 == 0) { TRACE(("%s %s => DIVIDE BY ZERO\n", O2S(valuePtr), O2S(value2Ptr))); goto divideByZero; } else if ((w2 == 1) || (w2 == -1)) { /* * Div. by |1| always yields remainder of 0. */ TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); objResultPtr = TCONST(0); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } else if (w1 == 0) { /* * 0 % (non-zero) always yields remainder of 0. */ TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); objResultPtr = TCONST(0); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } else { wResult = w1 / w2; /* * Force Tcl's integer division rules. * TODO: examine for logic simplification */ if ((wResult < 0 || (wResult == 0 && ((w1 < 0 && w2 > 0) || (w1 > 0 && w2 < 0)))) && (wResult * w2 != w1)) { wResult -= 1; } wResult = w1 - w2*wResult; goto wideResultOfArithmetic; } case INST_RSHIFT: if (w2 < 0) { Tcl_SetObjResult(interp, Tcl_NewStringObj( "negative shift argument", -1)); #ifdef ERROR_CODE_FOR_EARLY_DETECTED_ARITH_ERROR DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "ARITH", "DOMAIN", "domain error: argument not in valid range", NULL); CACHE_STACK_INFO(); #endif /* ERROR_CODE_FOR_EARLY_DETECTED_ARITH_ERROR */ goto gotError; } else if (w1 == 0) { TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); objResultPtr = TCONST(0); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } else { /* * Quickly force large right shifts to 0 or -1. */ if (w2 >= (Tcl_WideInt)(CHAR_BIT*sizeof(long))) { /* * We assume that INT_MAX is much larger than the * number of bits in a long. This is a pretty safe * assumption, given that the former is usually around * 4e9 and the latter 32 or 64... */ TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); if (w1 > 0L) { objResultPtr = TCONST(0); } else { TclNewIntObj(objResultPtr, -1); } TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } /* * Handle shifts within the native long range. */ wResult = w1 >> ((int) w2); goto wideResultOfArithmetic; } case INST_LSHIFT: if (w2 < 0) { Tcl_SetObjResult(interp, Tcl_NewStringObj( "negative shift argument", -1)); #ifdef ERROR_CODE_FOR_EARLY_DETECTED_ARITH_ERROR DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "ARITH", "DOMAIN", "domain error: argument not in valid range", NULL); CACHE_STACK_INFO(); #endif /* ERROR_CODE_FOR_EARLY_DETECTED_ARITH_ERROR */ goto gotError; } else if (w1 == 0) { TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); objResultPtr = TCONST(0); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } else if (w2 > INT_MAX) { /* * Technically, we could hold the value (1 << (INT_MAX+1)) * in an mp_int, but since we're using mp_mul_2d() to do * the work, and it takes only an int argument, that's a * good place to draw the line. */ Tcl_SetObjResult(interp, Tcl_NewStringObj( "integer value too large to represent", -1)); #ifdef ERROR_CODE_FOR_EARLY_DETECTED_ARITH_ERROR DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW", "integer value too large to represent", NULL); CACHE_STACK_INFO(); #endif /* ERROR_CODE_FOR_EARLY_DETECTED_ARITH_ERROR */ goto gotError; } else { int shift = (int) w2; /* * Handle shifts within the native long range. */ if ((size_t) shift < CHAR_BIT*sizeof(long) && (w1 != 0) && !((w1>0 ? w1 : ~w1) & -(1L<<(CHAR_BIT*sizeof(long) - 1 - shift)))) { wResult = w1 << shift; goto wideResultOfArithmetic; } } /* * Too large; need to use the broken-out function. */ TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); break; case INST_BITAND: wResult = w1 & w2; goto wideResultOfArithmetic; case INST_BITOR: wResult = w1 | w2; goto wideResultOfArithmetic; case INST_BITXOR: wResult = w1 ^ w2; goto wideResultOfArithmetic; } } /* * DO NOT MERGE THIS WITH THE EQUIVALENT SECTION LATER! That would * encourage the compiler to inline ExecuteExtendedBinaryMathOp, which * is highly undesirable due to the overall impact on size. */ TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); objResultPtr = ExecuteExtendedBinaryMathOp(interp, *pc, &TCONST(0), valuePtr, value2Ptr); if (objResultPtr == DIVIDED_BY_ZERO) { TRACE_APPEND(("DIVIDE BY ZERO\n")); goto divideByZero; } else if (objResultPtr == GENERAL_ARITHMETIC_ERROR) { TRACE_ERROR(interp); goto gotError; } else if (objResultPtr == NULL) { TRACE_APPEND(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } else { TRACE_APPEND(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } case INST_EXPON: case INST_ADD: case INST_SUB: case INST_DIV: case INST_MULT: value2Ptr = OBJ_AT_TOS; valuePtr = OBJ_UNDER_TOS; if ((GetNumberFromObj(NULL, valuePtr, &ptr1, &type1) != TCL_OK) || IsErroringNaNType(type1)) { TRACE(("%.20s %.20s => ILLEGAL 1st TYPE %s\n", O2S(value2Ptr), O2S(valuePtr), (valuePtr->typePtr? valuePtr->typePtr->name: "null"))); DECACHE_STACK_INFO(); IllegalExprOperandType(interp, pc, valuePtr); CACHE_STACK_INFO(); goto gotError; } #ifdef ACCEPT_NAN if (type1 == TCL_NUMBER_NAN) { /* * NaN first argument -> result is also NaN. */ NEXT_INST_F(1, 1, 0); } #endif if ((GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2) != TCL_OK) || IsErroringNaNType(type2)) { TRACE(("%.20s %.20s => ILLEGAL 2nd TYPE %s\n", O2S(value2Ptr), O2S(valuePtr), (value2Ptr->typePtr? value2Ptr->typePtr->name: "null"))); DECACHE_STACK_INFO(); IllegalExprOperandType(interp, pc, value2Ptr); CACHE_STACK_INFO(); goto gotError; } #ifdef ACCEPT_NAN if (type2 == TCL_NUMBER_NAN) { /* * NaN second argument -> result is also NaN. */ objResultPtr = value2Ptr; NEXT_INST_F(1, 2, 1); } #endif /* * Handle (long,long) arithmetic as best we can without going out to * an external function. */ if ((type1 == TCL_NUMBER_WIDE) && (type2 == TCL_NUMBER_WIDE)) { w1 = *((const Tcl_WideInt *)ptr1); w2 = *((const Tcl_WideInt *)ptr2); switch (*pc) { case INST_ADD: wResult = w1 + w2; /* * Check for overflow. */ if (Overflowing(w1, w2, wResult)) { goto overflow; } goto wideResultOfArithmetic; case INST_SUB: wResult = w1 - w2; /* * Must check for overflow. The macro tests for overflows in * sums by looking at the sign bits. As we have a subtraction * here, we are adding -w2. As -w2 could in turn overflow, we * test with ~w2 instead: it has the opposite sign bit to w2 * so it does the job. Note that the only "bad" case (w2==0) * is irrelevant for this macro, as in that case w1 and * wResult have the same sign and there is no overflow anyway. */ if (Overflowing(w1, ~w2, wResult)) { goto overflow; } wideResultOfArithmetic: TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); if (Tcl_IsShared(valuePtr)) { objResultPtr = Tcl_NewWideIntObj(wResult); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } TclSetIntObj(valuePtr, wResult); TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); case INST_DIV: if (w2 == 0) { TRACE(("%s %s => DIVIDE BY ZERO\n", O2S(valuePtr), O2S(value2Ptr))); goto divideByZero; } else if ((w1 == LLONG_MIN) && (w2 == -1)) { /* * Can't represent (-LLONG_MIN) as a Tcl_WideInt. */ goto overflow; } wResult = w1 / w2; /* * Force Tcl's integer division rules. * TODO: examine for logic simplification */ if (((wResult < 0) || ((wResult == 0) && ((w1 < 0 && w2 > 0) || (w1 > 0 && w2 < 0)))) && ((wResult * w2) != w1)) { wResult -= 1; } goto wideResultOfArithmetic; case INST_MULT: if (((sizeof(Tcl_WideInt) >= 2*sizeof(int)) && (w1 <= INT_MAX) && (w1 >= INT_MIN) && (w2 <= INT_MAX) && (w2 >= INT_MIN)) || ((sizeof(Tcl_WideInt) >= 2*sizeof(short)) && (w1 <= SHRT_MAX) && (w1 >= SHRT_MIN) && (w2 <= SHRT_MAX) && (w2 >= SHRT_MIN))) { wResult = w1 * w2; goto wideResultOfArithmetic; } } /* * Fall through with INST_EXPON, INST_DIV and large multiplies. */ } overflow: TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); objResultPtr = ExecuteExtendedBinaryMathOp(interp, *pc, &TCONST(0), valuePtr, value2Ptr); if (objResultPtr == DIVIDED_BY_ZERO) { TRACE_APPEND(("DIVIDE BY ZERO\n")); goto divideByZero; } else if (objResultPtr == EXPONENT_OF_ZERO) { TRACE_APPEND(("EXPONENT OF ZERO\n")); goto exponOfZero; } else if (objResultPtr == GENERAL_ARITHMETIC_ERROR) { TRACE_ERROR(interp); goto gotError; } else if (objResultPtr == NULL) { TRACE_APPEND(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } else { TRACE_APPEND(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } case INST_LNOT: { int b; valuePtr = OBJ_AT_TOS; /* TODO - check claim that taking address of b harms performance */ /* TODO - consider optimization search for constants */ if (TclGetBooleanFromObj(NULL, valuePtr, &b) != TCL_OK) { TRACE(("\"%.20s\" => ERROR: illegal type %s\n", O2S(valuePtr), (valuePtr->typePtr? valuePtr->typePtr->name : "null"))); DECACHE_STACK_INFO(); IllegalExprOperandType(interp, pc, valuePtr); CACHE_STACK_INFO(); goto gotError; } /* TODO: Consider peephole opt. */ objResultPtr = TCONST(!b); TRACE_WITH_OBJ(("%s => ", O2S(valuePtr)), objResultPtr); NEXT_INST_F(1, 1, 1); } case INST_BITNOT: valuePtr = OBJ_AT_TOS; TRACE(("\"%.20s\" => ", O2S(valuePtr))); if ((GetNumberFromObj(NULL, valuePtr, &ptr1, &type1) != TCL_OK) || (type1==TCL_NUMBER_NAN) || (type1==TCL_NUMBER_DOUBLE)) { /* * ... ~$NonInteger => raise an error. */ TRACE_APPEND(("ERROR: illegal type %s\n", (valuePtr->typePtr? valuePtr->typePtr->name : "null"))); DECACHE_STACK_INFO(); IllegalExprOperandType(interp, pc, valuePtr); CACHE_STACK_INFO(); goto gotError; } if (type1 == TCL_NUMBER_WIDE) { w1 = *((const Tcl_WideInt *) ptr1); if (Tcl_IsShared(valuePtr)) { TclNewIntObj(objResultPtr, ~w1); TRACE_APPEND(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 1, 1); } TclSetIntObj(valuePtr, ~w1); TRACE_APPEND(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 0, 0); } objResultPtr = ExecuteExtendedUnaryMathOp(*pc, valuePtr); if (objResultPtr != NULL) { TRACE_APPEND(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 1, 1); } else { TRACE_APPEND(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 0, 0); } case INST_UMINUS: valuePtr = OBJ_AT_TOS; TRACE(("\"%.20s\" => ", O2S(valuePtr))); if ((GetNumberFromObj(NULL, valuePtr, &ptr1, &type1) != TCL_OK) || IsErroringNaNType(type1)) { TRACE_APPEND(("ERROR: illegal type %s \n", (valuePtr->typePtr? valuePtr->typePtr->name : "null"))); DECACHE_STACK_INFO(); IllegalExprOperandType(interp, pc, valuePtr); CACHE_STACK_INFO(); goto gotError; } switch (type1) { case TCL_NUMBER_NAN: /* -NaN => NaN */ TRACE_APPEND(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 0, 0); case TCL_NUMBER_WIDE: w1 = *((const Tcl_WideInt *) ptr1); if (w1 != LLONG_MIN) { if (Tcl_IsShared(valuePtr)) { TclNewIntObj(objResultPtr, -w1); TRACE_APPEND(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 1, 1); } TclSetIntObj(valuePtr, -w1); TRACE_APPEND(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 0, 0); } /* FALLTHROUGH */ } objResultPtr = ExecuteExtendedUnaryMathOp(*pc, valuePtr); if (objResultPtr != NULL) { TRACE_APPEND(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 1, 1); } else { TRACE_APPEND(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 0, 0); } case INST_UPLUS: case INST_TRY_CVT_TO_NUMERIC: /* * Try to convert the topmost stack object to numeric object. This is * done in order to support [expr]'s policy of interpreting operands * if at all possible as numbers first, then strings. */ valuePtr = OBJ_AT_TOS; TRACE(("\"%.20s\" => ", O2S(valuePtr))); if (GetNumberFromObj(NULL, valuePtr, &ptr1, &type1) != TCL_OK) { if (*pc == INST_UPLUS) { /* * ... +$NonNumeric => raise an error. */ TRACE_APPEND(("ERROR: illegal type %s\n", (valuePtr->typePtr? valuePtr->typePtr->name:"null"))); DECACHE_STACK_INFO(); IllegalExprOperandType(interp, pc, valuePtr); CACHE_STACK_INFO(); goto gotError; } /* ... TryConvertToNumeric($NonNumeric) is acceptable */ TRACE_APPEND(("not numeric\n")); NEXT_INST_F(1, 0, 0); } if (IsErroringNaNType(type1)) { if (*pc == INST_UPLUS) { /* * ... +$NonNumeric => raise an error. */ TRACE_APPEND(("ERROR: illegal type %s\n", (valuePtr->typePtr? valuePtr->typePtr->name:"null"))); DECACHE_STACK_INFO(); IllegalExprOperandType(interp, pc, valuePtr); CACHE_STACK_INFO(); } else { /* * Numeric conversion of NaN -> error. */ TRACE_APPEND(("ERROR: IEEE floating pt error\n")); DECACHE_STACK_INFO(); TclExprFloatError(interp, *((const double *) ptr1)); CACHE_STACK_INFO(); } goto gotError; } /* * Ensure that the numeric value has a string rep the same as the * formatted version of its internal rep. This is used, e.g., to make * sure that "expr {0001}" yields "1", not "0001". We implement this * by _discarding_ the string rep since we know it will be * regenerated, if needed later, by formatting the internal rep's * value. */ if (valuePtr->bytes == NULL) { TRACE_APPEND(("numeric, same Tcl_Obj\n")); NEXT_INST_F(1, 0, 0); } if (Tcl_IsShared(valuePtr)) { /* * Here we do some surgery within the Tcl_Obj internals. We want * to copy the intrep, but not the string, so we temporarily hide * the string so we do not copy it. */ char *savedString = valuePtr->bytes; valuePtr->bytes = NULL; objResultPtr = Tcl_DuplicateObj(valuePtr); valuePtr->bytes = savedString; TRACE_APPEND(("numeric, new Tcl_Obj\n")); NEXT_INST_F(1, 1, 1); } TclInvalidateStringRep(valuePtr); TRACE_APPEND(("numeric, same Tcl_Obj\n")); NEXT_INST_F(1, 0, 0); } /* * End of numeric operator instructions. * ----------------------------------------------------------------- */ case INST_TRY_CVT_TO_BOOLEAN: valuePtr = OBJ_AT_TOS; if (valuePtr->typePtr == &tclBooleanType) { objResultPtr = TCONST(1); } else { int result = (TclSetBooleanFromAny(NULL, valuePtr) == TCL_OK); objResultPtr = TCONST(result); } TRACE_WITH_OBJ(("\"%.30s\" => ", O2S(valuePtr)), objResultPtr); NEXT_INST_F(1, 0, 1); case INST_BREAK: /* DECACHE_STACK_INFO(); Tcl_ResetResult(interp); CACHE_STACK_INFO(); */ result = TCL_BREAK; cleanup = 0; TRACE(("=> BREAK!\n")); goto processExceptionReturn; case INST_CONTINUE: /* DECACHE_STACK_INFO(); Tcl_ResetResult(interp); CACHE_STACK_INFO(); */ result = TCL_CONTINUE; cleanup = 0; TRACE(("=> CONTINUE!\n")); goto processExceptionReturn; { ForeachInfo *infoPtr; Var *iterVarPtr, *listVarPtr; Tcl_Obj *oldValuePtr, *listPtr, **elements; ForeachVarList *varListPtr; int numLists, listTmpIndex, listLen, numVars; size_t iterNum; int varIndex, valIndex, continueLoop, j, iterTmpIndex; long i; case INST_FOREACH_START4: /* DEPRECATED */ /* * Initialize the temporary local var that holds the count of the * number of iterations of the loop body to -1. */ opnd = TclGetUInt4AtPtr(pc+1); infoPtr = codePtr->auxDataArrayPtr[opnd].clientData; iterTmpIndex = infoPtr->loopCtTemp; iterVarPtr = LOCAL(iterTmpIndex); oldValuePtr = iterVarPtr->value.objPtr; if (oldValuePtr == NULL) { TclNewIntObj(iterVarPtr->value.objPtr, -1); Tcl_IncrRefCount(iterVarPtr->value.objPtr); } else { TclSetIntObj(oldValuePtr, -1); } TRACE(("%u => loop iter count temp %d\n", opnd, iterTmpIndex)); #ifndef TCL_COMPILE_DEBUG /* * Remark that the compiler ALWAYS sets INST_FOREACH_STEP4 immediately * after INST_FOREACH_START4 - let us just fall through instead of * jumping back to the top. */ pc += 5; TCL_DTRACE_INST_NEXT(); #else NEXT_INST_F(5, 0, 0); #endif case INST_FOREACH_STEP4: /* DEPRECATED */ /* * "Step" a foreach loop (i.e., begin its next iteration) by assigning * the next value list element to each loop var. */ opnd = TclGetUInt4AtPtr(pc+1); TRACE(("%u => ", opnd)); infoPtr = codePtr->auxDataArrayPtr[opnd].clientData; numLists = infoPtr->numLists; /* * Increment the temp holding the loop iteration number. */ iterVarPtr = LOCAL(infoPtr->loopCtTemp); valuePtr = iterVarPtr->value.objPtr; iterNum = (size_t)valuePtr->internalRep.wideValue + 1; TclSetIntObj(valuePtr, iterNum); /* * Check whether all value lists are exhausted and we should stop the * loop. */ continueLoop = 0; listTmpIndex = infoPtr->firstValueTemp; for (i = 0; i < numLists; i++) { varListPtr = infoPtr->varLists[i]; numVars = varListPtr->numVars; listVarPtr = LOCAL(listTmpIndex); listPtr = listVarPtr->value.objPtr; if (TclListObjLength(interp, listPtr, &listLen) != TCL_OK) { TRACE_APPEND(("ERROR converting list %ld, \"%.30s\": %s\n", i, O2S(listPtr), O2S(Tcl_GetObjResult(interp)))); goto gotError; } if ((size_t)listLen > iterNum * numVars) { continueLoop = 1; } listTmpIndex++; } /* * If some var in some var list still has a remaining list element * iterate one more time. Assign to var the next element from its * value list. We already checked above that each list temp holds a * valid list object (by calling Tcl_ListObjLength), but cannot rely * on that check remaining valid: one list could have been shimmered * as a side effect of setting a traced variable. */ if (continueLoop) { listTmpIndex = infoPtr->firstValueTemp; for (i = 0; i < numLists; i++) { varListPtr = infoPtr->varLists[i]; numVars = varListPtr->numVars; listVarPtr = LOCAL(listTmpIndex); listPtr = TclListObjCopy(NULL, listVarPtr->value.objPtr); TclListObjGetElements(interp, listPtr, &listLen, &elements); valIndex = (iterNum * numVars); for (j = 0; j < numVars; j++) { if (valIndex >= listLen) { TclNewObj(valuePtr); } else { valuePtr = elements[valIndex]; } varIndex = varListPtr->varIndexes[j]; varPtr = LOCAL(varIndex); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } if (TclIsVarDirectWritable(varPtr)) { value2Ptr = varPtr->value.objPtr; if (valuePtr != value2Ptr) { if (value2Ptr != NULL) { TclDecrRefCount(value2Ptr); } varPtr->value.objPtr = valuePtr; Tcl_IncrRefCount(valuePtr); } } else { DECACHE_STACK_INFO(); if (TclPtrSetVarIdx(interp, varPtr, NULL, NULL, NULL, valuePtr, TCL_LEAVE_ERR_MSG, varIndex)==NULL){ CACHE_STACK_INFO(); TRACE_APPEND(( "ERROR init. index temp %d: %s\n", varIndex, O2S(Tcl_GetObjResult(interp)))); TclDecrRefCount(listPtr); goto gotError; } CACHE_STACK_INFO(); } valIndex++; } TclDecrRefCount(listPtr); listTmpIndex++; } } TRACE_APPEND(("%d lists, iter %" TCL_Z_MODIFIER "d, %s loop\n", numLists, iterNum, (continueLoop? "continue" : "exit"))); /* * Run-time peep-hole optimisation: the compiler ALWAYS follows * INST_FOREACH_STEP4 with an INST_JUMP_FALSE. We just skip that * instruction and jump direct from here. */ pc += 5; if (*pc == INST_JUMP_FALSE1) { NEXT_INST_F((continueLoop? 2 : TclGetInt1AtPtr(pc+1)), 0, 0); } else { NEXT_INST_F((continueLoop? 5 : TclGetInt4AtPtr(pc+1)), 0, 0); } } { ForeachInfo *infoPtr; Tcl_Obj *listPtr, **elements, *tmpPtr; ForeachVarList *varListPtr; int numLists, listLen, numVars; int listTmpDepth; size_t iterNum, iterMax, iterTmp; int varIndex, valIndex, j; long i; case INST_FOREACH_START: /* * Initialize the data for the looping construct, pushing the * corresponding Tcl_Objs to the stack. */ opnd = TclGetUInt4AtPtr(pc+1); infoPtr = codePtr->auxDataArrayPtr[opnd].clientData; numLists = infoPtr->numLists; TRACE(("%u => ", opnd)); /* * Compute the number of iterations that will be run: iterMax */ iterMax = 0; listTmpDepth = numLists-1; for (i = 0; i < numLists; i++) { varListPtr = infoPtr->varLists[i]; numVars = varListPtr->numVars; listPtr = OBJ_AT_DEPTH(listTmpDepth); if (TclListObjLength(interp, listPtr, &listLen) != TCL_OK) { TRACE_APPEND(("ERROR converting list %ld, \"%s\": %s", i, O2S(listPtr), O2S(Tcl_GetObjResult(interp)))); goto gotError; } if (Tcl_IsShared(listPtr)) { objPtr = TclListObjCopy(NULL, listPtr); Tcl_IncrRefCount(objPtr); Tcl_DecrRefCount(listPtr); OBJ_AT_DEPTH(listTmpDepth) = objPtr; } iterTmp = (listLen + (numVars - 1))/numVars; if (iterTmp > iterMax) { iterMax = iterTmp; } listTmpDepth--; } /* * Store the iterNum and iterMax in a single Tcl_Obj; we keep a * nul-string obj with the pointer stored in the ptrValue so that the * thing is properly garbage collected. THIS OBJ MAKES NO SENSE, but * it will never leave this scope and is read-only. */ TclNewObj(tmpPtr); tmpPtr->internalRep.twoPtrValue.ptr1 = NULL; tmpPtr->internalRep.twoPtrValue.ptr2 = (void *)iterMax; PUSH_OBJECT(tmpPtr); /* iterCounts object */ /* * Store a pointer to the ForeachInfo struct; same dirty trick * as above */ TclNewObj(tmpPtr); tmpPtr->internalRep.twoPtrValue.ptr1 = infoPtr; PUSH_OBJECT(tmpPtr); /* infoPtr object */ TRACE_APPEND(("jump to loop step\n")); /* * Jump directly to the INST_FOREACH_STEP instruction; the C code just * falls through. */ pc += 5 - infoPtr->loopCtTemp; case INST_FOREACH_STEP: /* * "Step" a foreach loop (i.e., begin its next iteration) by assigning * the next value list element to each loop var. */ tmpPtr = OBJ_AT_TOS; infoPtr = tmpPtr->internalRep.twoPtrValue.ptr1; numLists = infoPtr->numLists; TRACE(("=> ")); tmpPtr = OBJ_AT_DEPTH(1); iterNum = (size_t)tmpPtr->internalRep.twoPtrValue.ptr1; iterMax = (size_t)tmpPtr->internalRep.twoPtrValue.ptr2; /* * If some list still has a remaining list element iterate one more * time. Assign to var the next element from its value list. */ if (iterNum < iterMax) { /* * Set the variables and jump back to run the body */ tmpPtr->internalRep.twoPtrValue.ptr1 =(void *)(iterNum + 1); listTmpDepth = numLists + 1; for (i = 0; i < numLists; i++) { varListPtr = infoPtr->varLists[i]; numVars = varListPtr->numVars; listPtr = OBJ_AT_DEPTH(listTmpDepth); TclListObjGetElements(interp, listPtr, &listLen, &elements); valIndex = (iterNum * numVars); for (j = 0; j < numVars; j++) { if (valIndex >= listLen) { TclNewObj(valuePtr); } else { valuePtr = elements[valIndex]; } varIndex = varListPtr->varIndexes[j]; varPtr = LOCAL(varIndex); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } if (TclIsVarDirectWritable(varPtr)) { value2Ptr = varPtr->value.objPtr; if (valuePtr != value2Ptr) { if (value2Ptr != NULL) { TclDecrRefCount(value2Ptr); } varPtr->value.objPtr = valuePtr; Tcl_IncrRefCount(valuePtr); } } else { DECACHE_STACK_INFO(); if (TclPtrSetVarIdx(interp, varPtr, NULL, NULL, NULL, valuePtr, TCL_LEAVE_ERR_MSG, varIndex)==NULL){ CACHE_STACK_INFO(); TRACE_APPEND(("ERROR init. index temp %d: %.30s", varIndex, O2S(Tcl_GetObjResult(interp)))); goto gotError; } CACHE_STACK_INFO(); } valIndex++; } listTmpDepth--; } TRACE_APPEND(("jump to loop start\n")); /* loopCtTemp being 'misused' for storing the jump size */ NEXT_INST_F(infoPtr->loopCtTemp, 0, 0); } TRACE_APPEND(("loop has no more iterations\n")); #ifdef TCL_COMPILE_DEBUG NEXT_INST_F(1, 0, 0); #else /* * FALL THROUGH */ pc++; #endif case INST_FOREACH_END: /* THIS INSTRUCTION IS ONLY CALLED AS A BREAK TARGET */ tmpPtr = OBJ_AT_TOS; infoPtr = tmpPtr->internalRep.twoPtrValue.ptr1; numLists = infoPtr->numLists; TRACE(("=> loop terminated\n")); NEXT_INST_V(1, numLists+2, 0); case INST_LMAP_COLLECT: /* * This instruction is only issued by lmap. The stack is: * - result * - infoPtr * - loop counters * - valLists * - collecting obj (unshared) * The instruction lappends the result to the collecting obj. */ tmpPtr = OBJ_AT_DEPTH(1); infoPtr = tmpPtr->internalRep.twoPtrValue.ptr1; numLists = infoPtr->numLists; TRACE_APPEND(("=> appending to list at depth %d\n", 3 + numLists)); objPtr = OBJ_AT_DEPTH(3 + numLists); Tcl_ListObjAppendElement(NULL, objPtr, OBJ_AT_TOS); NEXT_INST_F(1, 1, 0); } case INST_BEGIN_CATCH4: /* * Record start of the catch command with exception range index equal * to the operand. Push the current stack depth onto the special catch * stack. */ *(++catchTop) = CURR_DEPTH; TRACE(("%u => catchTop=%d, stackTop=%d\n", TclGetUInt4AtPtr(pc+1), (int) (catchTop - initCatchTop - 1), (int) CURR_DEPTH)); NEXT_INST_F(5, 0, 0); case INST_END_CATCH: catchTop--; DECACHE_STACK_INFO(); Tcl_ResetResult(interp); CACHE_STACK_INFO(); result = TCL_OK; TRACE(("=> catchTop=%d\n", (int) (catchTop - initCatchTop - 1))); NEXT_INST_F(1, 0, 0); case INST_PUSH_RESULT: objResultPtr = Tcl_GetObjResult(interp); TRACE_WITH_OBJ(("=> "), objResultPtr); /* * See the comments at INST_INVOKE_STK */ TclNewObj(objPtr); Tcl_IncrRefCount(objPtr); iPtr->objResultPtr = objPtr; NEXT_INST_F(1, 0, -1); case INST_PUSH_RETURN_CODE: TclNewIntObj(objResultPtr, result); TRACE(("=> %u\n", result)); NEXT_INST_F(1, 0, 1); case INST_PUSH_RETURN_OPTIONS: DECACHE_STACK_INFO(); objResultPtr = Tcl_GetReturnOptions(interp, result); CACHE_STACK_INFO(); TRACE_WITH_OBJ(("=> "), objResultPtr); NEXT_INST_F(1, 0, 1); case INST_RETURN_CODE_BRANCH: { int code; if (TclGetIntFromObj(NULL, OBJ_AT_TOS, &code) != TCL_OK) { Tcl_Panic("INST_RETURN_CODE_BRANCH: TOS not a return code!"); } if (code == TCL_OK) { Tcl_Panic("INST_RETURN_CODE_BRANCH: TOS is TCL_OK!"); } if (code < TCL_ERROR || code > TCL_CONTINUE) { code = TCL_CONTINUE + 1; } TRACE(("\"%s\" => jump offset %d\n", O2S(OBJ_AT_TOS), 2*code-1)); NEXT_INST_F(2*code-1, 1, 0); } /* * ----------------------------------------------------------------- * Start of dictionary-related instructions. */ { int opnd2, allocateDict, done, i, allocdict; Tcl_Obj *dictPtr, *statePtr, *keyPtr, *listPtr, *varNamePtr, *keysPtr; Tcl_Obj *emptyPtr, **keyPtrPtr; Tcl_DictSearch *searchPtr; DictUpdateInfo *duiPtr; case INST_DICT_VERIFY: dictPtr = OBJ_AT_TOS; TRACE(("\"%.30s\" => ", O2S(dictPtr))); if (Tcl_DictObjSize(interp, dictPtr, &done) != TCL_OK) { TRACE_APPEND(("ERROR verifying dictionary nature of \"%.30s\": %s\n", O2S(dictPtr), O2S(Tcl_GetObjResult(interp)))); goto gotError; } TRACE_APPEND(("OK\n")); NEXT_INST_F(1, 1, 0); case INST_DICT_GET: case INST_DICT_EXISTS: { register Tcl_Interp *interp2 = interp; register int found; opnd = TclGetUInt4AtPtr(pc+1); TRACE(("%u => ", opnd)); dictPtr = OBJ_AT_DEPTH(opnd); if (*pc == INST_DICT_EXISTS) { interp2 = NULL; } if (opnd > 1) { dictPtr = TclTraceDictPath(interp2, dictPtr, opnd-1, &OBJ_AT_DEPTH(opnd-1), DICT_PATH_READ); if (dictPtr == NULL) { if (*pc == INST_DICT_EXISTS) { found = 0; goto afterDictExists; } TRACE_WITH_OBJ(( "ERROR tracing dictionary path into \"%.30s\": ", O2S(OBJ_AT_DEPTH(opnd))), Tcl_GetObjResult(interp)); goto gotError; } } if (Tcl_DictObjGet(interp2, dictPtr, OBJ_AT_TOS, &objResultPtr) == TCL_OK) { if (*pc == INST_DICT_EXISTS) { found = (objResultPtr ? 1 : 0); goto afterDictExists; } if (!objResultPtr) { Tcl_SetObjResult(interp, Tcl_ObjPrintf( "key \"%s\" not known in dictionary", TclGetString(OBJ_AT_TOS))); DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "DICT", TclGetString(OBJ_AT_TOS), NULL); CACHE_STACK_INFO(); TRACE_ERROR(interp); goto gotError; } TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_V(5, opnd+1, 1); } else if (*pc != INST_DICT_EXISTS) { TRACE_APPEND(("ERROR reading leaf dictionary key \"%.30s\": %s", O2S(dictPtr), O2S(Tcl_GetObjResult(interp)))); goto gotError; } else { found = 0; } afterDictExists: TRACE_APPEND(("%d\n", found)); /* * The INST_DICT_EXISTS instruction is usually followed by a * conditional jump, so we can take advantage of this to do some * peephole optimization (note that we're careful to not close out * someone doing something else). */ JUMP_PEEPHOLE_V(found, 5, opnd+1); } case INST_DICT_SET: case INST_DICT_UNSET: case INST_DICT_INCR_IMM: opnd = TclGetUInt4AtPtr(pc+1); opnd2 = TclGetUInt4AtPtr(pc+5); varPtr = LOCAL(opnd2); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } TRACE(("%u %u => ", opnd, opnd2)); if (TclIsVarDirectReadable(varPtr)) { dictPtr = varPtr->value.objPtr; } else { DECACHE_STACK_INFO(); dictPtr = TclPtrGetVarIdx(interp, varPtr, NULL, NULL, NULL, 0, opnd2); CACHE_STACK_INFO(); } if (dictPtr == NULL) { TclNewObj(dictPtr); allocateDict = 1; } else { allocateDict = Tcl_IsShared(dictPtr); if (allocateDict) { dictPtr = Tcl_DuplicateObj(dictPtr); } } switch (*pc) { case INST_DICT_SET: cleanup = opnd + 1; result = Tcl_DictObjPutKeyList(interp, dictPtr, opnd, &OBJ_AT_DEPTH(opnd), OBJ_AT_TOS); break; case INST_DICT_INCR_IMM: cleanup = 1; opnd = TclGetInt4AtPtr(pc+1); result = Tcl_DictObjGet(interp, dictPtr, OBJ_AT_TOS, &valuePtr); if (result != TCL_OK) { break; } if (valuePtr == NULL) { Tcl_DictObjPut(NULL, dictPtr, OBJ_AT_TOS,Tcl_NewIntObj(opnd)); } else { value2Ptr = Tcl_NewIntObj(opnd); Tcl_IncrRefCount(value2Ptr); if (Tcl_IsShared(valuePtr)) { valuePtr = Tcl_DuplicateObj(valuePtr); Tcl_DictObjPut(NULL, dictPtr, OBJ_AT_TOS, valuePtr); } result = TclIncrObj(interp, valuePtr, value2Ptr); if (result == TCL_OK) { TclInvalidateStringRep(dictPtr); } TclDecrRefCount(value2Ptr); } break; case INST_DICT_UNSET: cleanup = opnd; result = Tcl_DictObjRemoveKeyList(interp, dictPtr, opnd, &OBJ_AT_DEPTH(opnd-1)); break; default: cleanup = 0; /* stop compiler warning */ Tcl_Panic("Should not happen!"); } if (result != TCL_OK) { if (allocateDict) { TclDecrRefCount(dictPtr); } TRACE_APPEND(("ERROR updating dictionary: %s\n", O2S(Tcl_GetObjResult(interp)))); goto checkForCatch; } if (TclIsVarDirectWritable(varPtr)) { if (allocateDict) { value2Ptr = varPtr->value.objPtr; Tcl_IncrRefCount(dictPtr); if (value2Ptr != NULL) { TclDecrRefCount(value2Ptr); } varPtr->value.objPtr = dictPtr; } objResultPtr = dictPtr; } else { Tcl_IncrRefCount(dictPtr); DECACHE_STACK_INFO(); objResultPtr = TclPtrSetVarIdx(interp, varPtr, NULL, NULL, NULL, dictPtr, TCL_LEAVE_ERR_MSG, opnd2); CACHE_STACK_INFO(); TclDecrRefCount(dictPtr); if (objResultPtr == NULL) { TRACE_ERROR(interp); goto gotError; } } #ifndef TCL_COMPILE_DEBUG if (*(pc+9) == INST_POP) { NEXT_INST_V(10, cleanup, 0); } #endif TRACE_APPEND(("\"%.30s\"\n", O2S(objResultPtr))); NEXT_INST_V(9, cleanup, 1); case INST_DICT_APPEND: case INST_DICT_LAPPEND: opnd = TclGetUInt4AtPtr(pc+1); varPtr = LOCAL(opnd); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } TRACE(("%u => ", opnd)); if (TclIsVarDirectReadable(varPtr)) { dictPtr = varPtr->value.objPtr; } else { DECACHE_STACK_INFO(); dictPtr = TclPtrGetVarIdx(interp, varPtr, NULL, NULL, NULL, 0, opnd); CACHE_STACK_INFO(); } if (dictPtr == NULL) { TclNewObj(dictPtr); allocateDict = 1; } else { allocateDict = Tcl_IsShared(dictPtr); if (allocateDict) { dictPtr = Tcl_DuplicateObj(dictPtr); } } if (Tcl_DictObjGet(interp, dictPtr, OBJ_UNDER_TOS, &valuePtr) != TCL_OK) { if (allocateDict) { TclDecrRefCount(dictPtr); } TRACE_ERROR(interp); goto gotError; } /* * Note that a non-existent key results in a NULL valuePtr, which is a * case handled separately below. What we *can* say at this point is * that the write-back will always succeed. */ switch (*pc) { case INST_DICT_APPEND: if (valuePtr == NULL) { Tcl_DictObjPut(NULL, dictPtr, OBJ_UNDER_TOS, OBJ_AT_TOS); } else if (Tcl_IsShared(valuePtr)) { valuePtr = Tcl_DuplicateObj(valuePtr); Tcl_AppendObjToObj(valuePtr, OBJ_AT_TOS); Tcl_DictObjPut(NULL, dictPtr, OBJ_UNDER_TOS, valuePtr); } else { Tcl_AppendObjToObj(valuePtr, OBJ_AT_TOS); /* * Must invalidate the string representation of dictionary * here because we have directly updated the internal * representation; if we don't, callers could see the wrong * string rep despite the internal version of the dictionary * having the correct value. [Bug 3079830] */ TclInvalidateStringRep(dictPtr); } break; case INST_DICT_LAPPEND: /* * More complex because list-append can fail. */ if (valuePtr == NULL) { Tcl_DictObjPut(NULL, dictPtr, OBJ_UNDER_TOS, Tcl_NewListObj(1, &OBJ_AT_TOS)); break; } else if (Tcl_IsShared(valuePtr)) { valuePtr = Tcl_DuplicateObj(valuePtr); if (Tcl_ListObjAppendElement(interp, valuePtr, OBJ_AT_TOS) != TCL_OK) { TclDecrRefCount(valuePtr); if (allocateDict) { TclDecrRefCount(dictPtr); } TRACE_ERROR(interp); goto gotError; } Tcl_DictObjPut(NULL, dictPtr, OBJ_UNDER_TOS, valuePtr); } else { if (Tcl_ListObjAppendElement(interp, valuePtr, OBJ_AT_TOS) != TCL_OK) { if (allocateDict) { TclDecrRefCount(dictPtr); } TRACE_ERROR(interp); goto gotError; } /* * Must invalidate the string representation of dictionary * here because we have directly updated the internal * representation; if we don't, callers could see the wrong * string rep despite the internal version of the dictionary * having the correct value. [Bug 3079830] */ TclInvalidateStringRep(dictPtr); } break; default: Tcl_Panic("Should not happen!"); } if (TclIsVarDirectWritable(varPtr)) { if (allocateDict) { value2Ptr = varPtr->value.objPtr; Tcl_IncrRefCount(dictPtr); if (value2Ptr != NULL) { TclDecrRefCount(value2Ptr); } varPtr->value.objPtr = dictPtr; } objResultPtr = dictPtr; } else { Tcl_IncrRefCount(dictPtr); DECACHE_STACK_INFO(); objResultPtr = TclPtrSetVarIdx(interp, varPtr, NULL, NULL, NULL, dictPtr, TCL_LEAVE_ERR_MSG, opnd); CACHE_STACK_INFO(); TclDecrRefCount(dictPtr); if (objResultPtr == NULL) { TRACE_ERROR(interp); goto gotError; } } #ifndef TCL_COMPILE_DEBUG if (*(pc+5) == INST_POP) { NEXT_INST_F(6, 2, 0); } #endif TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_F(5, 2, 1); case INST_DICT_FIRST: opnd = TclGetUInt4AtPtr(pc+1); TRACE(("%u => ", opnd)); dictPtr = POP_OBJECT(); searchPtr = ckalloc(sizeof(Tcl_DictSearch)); if (Tcl_DictObjFirst(interp, dictPtr, searchPtr, &keyPtr, &valuePtr, &done) != TCL_OK) { /* * dictPtr is no longer on the stack, and we're not * moving it into the intrep of an iterator. We need * to drop the refcount [Tcl Bug 9b352768e6]. */ Tcl_DecrRefCount(dictPtr); ckfree(searchPtr); TRACE_ERROR(interp); goto gotError; } TclNewObj(statePtr); statePtr->typePtr = &dictIteratorType; statePtr->internalRep.twoPtrValue.ptr1 = searchPtr; statePtr->internalRep.twoPtrValue.ptr2 = dictPtr; varPtr = LOCAL(opnd); if (varPtr->value.objPtr) { if (varPtr->value.objPtr->typePtr == &dictIteratorType) { Tcl_Panic("mis-issued dictFirst!"); } TclDecrRefCount(varPtr->value.objPtr); } varPtr->value.objPtr = statePtr; Tcl_IncrRefCount(statePtr); goto pushDictIteratorResult; case INST_DICT_NEXT: opnd = TclGetUInt4AtPtr(pc+1); TRACE(("%u => ", opnd)); statePtr = (*LOCAL(opnd)).value.objPtr; if (statePtr == NULL || statePtr->typePtr != &dictIteratorType) { Tcl_Panic("mis-issued dictNext!"); } searchPtr = statePtr->internalRep.twoPtrValue.ptr1; Tcl_DictObjNext(searchPtr, &keyPtr, &valuePtr, &done); pushDictIteratorResult: if (done) { TclNewObj(emptyPtr); PUSH_OBJECT(emptyPtr); PUSH_OBJECT(emptyPtr); } else { PUSH_OBJECT(valuePtr); PUSH_OBJECT(keyPtr); } TRACE_APPEND(("\"%.30s\" \"%.30s\" %d\n", O2S(OBJ_UNDER_TOS), O2S(OBJ_AT_TOS), done)); /* * The INST_DICT_FIRST and INST_DICT_NEXT instructsions are always * followed by a conditional jump, so we can take advantage of this to * do some peephole optimization (note that we're careful to not close * out someone doing something else). */ JUMP_PEEPHOLE_F(done, 5, 0); case INST_DICT_UPDATE_START: opnd = TclGetUInt4AtPtr(pc+1); opnd2 = TclGetUInt4AtPtr(pc+5); TRACE(("%u => ", opnd)); varPtr = LOCAL(opnd); duiPtr = codePtr->auxDataArrayPtr[opnd2].clientData; while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } if (TclIsVarDirectReadable(varPtr)) { dictPtr = varPtr->value.objPtr; } else { DECACHE_STACK_INFO(); dictPtr = TclPtrGetVarIdx(interp, varPtr, NULL, NULL, NULL, TCL_LEAVE_ERR_MSG, opnd); CACHE_STACK_INFO(); if (dictPtr == NULL) { TRACE_ERROR(interp); goto gotError; } } Tcl_IncrRefCount(dictPtr); if (TclListObjGetElements(interp, OBJ_AT_TOS, &length, &keyPtrPtr) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } if (length != duiPtr->length) { Tcl_Panic("dictUpdateStart argument length mismatch"); } for (i=0 ; ivarIndices[i]); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } DECACHE_STACK_INFO(); if (valuePtr == NULL) { TclObjUnsetVar2(interp, localName(iPtr->varFramePtr, duiPtr->varIndices[i]), NULL, 0); } else if (TclPtrSetVarIdx(interp, varPtr, NULL, NULL, NULL, valuePtr, TCL_LEAVE_ERR_MSG, duiPtr->varIndices[i]) == NULL) { CACHE_STACK_INFO(); TRACE_ERROR(interp); Tcl_DecrRefCount(dictPtr); goto gotError; } CACHE_STACK_INFO(); } TclDecrRefCount(dictPtr); TRACE_APPEND(("OK\n")); NEXT_INST_F(9, 0, 0); case INST_DICT_UPDATE_END: opnd = TclGetUInt4AtPtr(pc+1); opnd2 = TclGetUInt4AtPtr(pc+5); TRACE(("%u => ", opnd)); varPtr = LOCAL(opnd); duiPtr = codePtr->auxDataArrayPtr[opnd2].clientData; while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } if (TclIsVarDirectReadable(varPtr)) { dictPtr = varPtr->value.objPtr; } else { DECACHE_STACK_INFO(); dictPtr = TclPtrGetVarIdx(interp, varPtr, NULL, NULL, NULL, 0, opnd); CACHE_STACK_INFO(); } if (dictPtr == NULL) { TRACE_APPEND(("storage was unset\n")); NEXT_INST_F(9, 1, 0); } if (Tcl_DictObjSize(interp, dictPtr, &length) != TCL_OK || TclListObjGetElements(interp, OBJ_AT_TOS, &length, &keyPtrPtr) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } allocdict = Tcl_IsShared(dictPtr); if (allocdict) { dictPtr = Tcl_DuplicateObj(dictPtr); } if (length > 0) { TclInvalidateStringRep(dictPtr); } for (i=0 ; ivarIndices[i]); while (TclIsVarLink(var2Ptr)) { var2Ptr = var2Ptr->value.linkPtr; } if (TclIsVarDirectReadable(var2Ptr)) { valuePtr = var2Ptr->value.objPtr; } else { DECACHE_STACK_INFO(); valuePtr = TclPtrGetVarIdx(interp, var2Ptr, NULL, NULL, NULL, 0, duiPtr->varIndices[i]); CACHE_STACK_INFO(); } if (valuePtr == NULL) { Tcl_DictObjRemove(interp, dictPtr, keyPtrPtr[i]); } else if (dictPtr == valuePtr) { Tcl_DictObjPut(interp, dictPtr, keyPtrPtr[i], Tcl_DuplicateObj(valuePtr)); } else { Tcl_DictObjPut(interp, dictPtr, keyPtrPtr[i], valuePtr); } } if (TclIsVarDirectWritable(varPtr)) { Tcl_IncrRefCount(dictPtr); TclDecrRefCount(varPtr->value.objPtr); varPtr->value.objPtr = dictPtr; } else { DECACHE_STACK_INFO(); objResultPtr = TclPtrSetVarIdx(interp, varPtr, NULL, NULL, NULL, dictPtr, TCL_LEAVE_ERR_MSG, opnd); CACHE_STACK_INFO(); if (objResultPtr == NULL) { if (allocdict) { TclDecrRefCount(dictPtr); } TRACE_ERROR(interp); goto gotError; } } TRACE_APPEND(("written back\n")); NEXT_INST_F(9, 1, 0); case INST_DICT_EXPAND: dictPtr = OBJ_UNDER_TOS; listPtr = OBJ_AT_TOS; TRACE(("\"%.30s\" \"%.30s\" =>", O2S(dictPtr), O2S(listPtr))); if (TclListObjGetElements(interp, listPtr, &objc, &objv) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } objResultPtr = TclDictWithInit(interp, dictPtr, objc, objv); if (objResultPtr == NULL) { TRACE_ERROR(interp); goto gotError; } TRACE_APPEND(("\"%.30s\"\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); case INST_DICT_RECOMBINE_STK: keysPtr = POP_OBJECT(); varNamePtr = OBJ_UNDER_TOS; listPtr = OBJ_AT_TOS; TRACE(("\"%.30s\" \"%.30s\" \"%.30s\" => ", O2S(varNamePtr), O2S(valuePtr), O2S(keysPtr))); if (TclListObjGetElements(interp, listPtr, &objc, &objv) != TCL_OK) { TRACE_ERROR(interp); TclDecrRefCount(keysPtr); goto gotError; } varPtr = TclObjLookupVarEx(interp, varNamePtr, NULL, TCL_LEAVE_ERR_MSG, "set", 1, 1, &arrayPtr); if (varPtr == NULL) { TRACE_ERROR(interp); TclDecrRefCount(keysPtr); goto gotError; } DECACHE_STACK_INFO(); result = TclDictWithFinish(interp, varPtr,arrayPtr,varNamePtr,NULL,-1, objc, objv, keysPtr); CACHE_STACK_INFO(); TclDecrRefCount(keysPtr); if (result != TCL_OK) { TRACE_ERROR(interp); goto gotError; } TRACE_APPEND(("OK\n")); NEXT_INST_F(1, 2, 0); case INST_DICT_RECOMBINE_IMM: opnd = TclGetUInt4AtPtr(pc+1); listPtr = OBJ_UNDER_TOS; keysPtr = OBJ_AT_TOS; varPtr = LOCAL(opnd); TRACE(("%u <- \"%.30s\" \"%.30s\" => ", opnd, O2S(valuePtr), O2S(keysPtr))); if (TclListObjGetElements(interp, listPtr, &objc, &objv) != TCL_OK) { TRACE_ERROR(interp); goto gotError; } while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } DECACHE_STACK_INFO(); result = TclDictWithFinish(interp, varPtr, NULL, NULL, NULL, opnd, objc, objv, keysPtr); CACHE_STACK_INFO(); if (result != TCL_OK) { TRACE_ERROR(interp); goto gotError; } TRACE_APPEND(("OK\n")); NEXT_INST_F(5, 2, 0); } /* * End of dictionary-related instructions. * ----------------------------------------------------------------- */ case INST_CLOCK_READ: { /* Read the wall clock */ Tcl_WideInt wval; Tcl_Time now; switch(TclGetUInt1AtPtr(pc+1)) { case 0: /* clicks */ #ifdef TCL_WIDE_CLICKS wval = TclpGetWideClicks(); #else wval = (Tcl_WideInt) TclpGetClicks(); #endif break; case 1: /* microseconds */ Tcl_GetTime(&now); wval = (Tcl_WideInt) now.sec * 1000000 + now.usec; break; case 2: /* milliseconds */ Tcl_GetTime(&now); wval = (Tcl_WideInt) now.sec * 1000 + now.usec / 1000; break; case 3: /* seconds */ Tcl_GetTime(&now); wval = (Tcl_WideInt) now.sec; break; default: Tcl_Panic("clockRead instruction with unknown clock#"); } objResultPtr = Tcl_NewWideIntObj(wval); TRACE_WITH_OBJ(("=> "), objResultPtr); NEXT_INST_F(2, 0, 1); } default: Tcl_Panic("TclNRExecuteByteCode: unrecognized opCode %u", *pc); } /* end of switch on opCode */ /* * Block for variables needed to process exception returns. */ { ExceptionRange *rangePtr; /* Points to closest loop or catch exception * range enclosing the pc. Used by various * instructions and processCatch to process * break, continue, and errors. */ const char *bytes; /* * An external evaluation (INST_INVOKE or INST_EVAL) returned * something different from TCL_OK, or else INST_BREAK or * INST_CONTINUE were called. */ processExceptionReturn: #ifdef TCL_COMPILE_DEBUG switch (*pc) { case INST_INVOKE_STK1: opnd = TclGetUInt1AtPtr(pc+1); TRACE(("%u => ... after \"%.20s\": ", opnd, cmdNameBuf)); break; case INST_INVOKE_STK4: opnd = TclGetUInt4AtPtr(pc+1); TRACE(("%u => ... after \"%.20s\": ", opnd, cmdNameBuf)); break; case INST_EVAL_STK: /* * Note that the object at stacktop has to be used before doing * the cleanup. */ TRACE(("\"%.30s\" => ", O2S(OBJ_AT_TOS))); break; default: TRACE(("=> ")); } #endif if ((result == TCL_CONTINUE) || (result == TCL_BREAK)) { rangePtr = GetExceptRangeForPc(pc, result, codePtr); if (rangePtr == NULL) { TRACE_APPEND(("no encl. loop or catch, returning %s\n", StringForResultCode(result))); goto abnormalReturn; } if (rangePtr->type == CATCH_EXCEPTION_RANGE) { TRACE_APPEND(("%s ...\n", StringForResultCode(result))); goto processCatch; } while (cleanup--) { valuePtr = POP_OBJECT(); TclDecrRefCount(valuePtr); } if (result == TCL_BREAK) { result = TCL_OK; pc = (codePtr->codeStart + rangePtr->breakOffset); TRACE_APPEND(("%s, range at %d, new pc %d\n", StringForResultCode(result), rangePtr->codeOffset, rangePtr->breakOffset)); NEXT_INST_F(0, 0, 0); } if (rangePtr->continueOffset == -1) { TRACE_APPEND(("%s, loop w/o continue, checking for catch\n", StringForResultCode(result))); goto checkForCatch; } result = TCL_OK; pc = (codePtr->codeStart + rangePtr->continueOffset); TRACE_APPEND(("%s, range at %d, new pc %d\n", StringForResultCode(result), rangePtr->codeOffset, rangePtr->continueOffset)); NEXT_INST_F(0, 0, 0); } #ifdef TCL_COMPILE_DEBUG if (traceInstructions) { objPtr = Tcl_GetObjResult(interp); if ((result != TCL_ERROR) && (result != TCL_RETURN)) { TRACE_APPEND(("OTHER RETURN CODE %d, result=\"%.30s\"\n ", result, O2S(objPtr))); } else { TRACE_APPEND(("%s, result=\"%.30s\"\n", StringForResultCode(result), O2S(objPtr))); } } #endif goto checkForCatch; /* * Division by zero in an expression. Control only reaches this point * by "goto divideByZero". */ divideByZero: Tcl_SetObjResult(interp, Tcl_NewStringObj("divide by zero", -1)); DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "ARITH", "DIVZERO", "divide by zero", NULL); CACHE_STACK_INFO(); goto gotError; /* * Exponentiation of zero by negative number in an expression. Control * only reaches this point by "goto exponOfZero". */ exponOfZero: Tcl_SetObjResult(interp, Tcl_NewStringObj( "exponentiation of zero by negative power", -1)); DECACHE_STACK_INFO(); Tcl_SetErrorCode(interp, "ARITH", "DOMAIN", "exponentiation of zero by negative power", NULL); CACHE_STACK_INFO(); /* * Almost all error paths feed through here rather than assigning to * result themselves (for a small but consistent saving). */ gotError: result = TCL_ERROR; /* * Execution has generated an "exception" such as TCL_ERROR. If the * exception is an error, record information about what was being * executed when the error occurred. Find the closest enclosing catch * range, if any. If no enclosing catch range is found, stop execution * and return the "exception" code. */ checkForCatch: if (iPtr->execEnvPtr->rewind) { goto abnormalReturn; } if ((result == TCL_ERROR) && !(iPtr->flags & ERR_ALREADY_LOGGED)) { const unsigned char *pcBeg; bytes = GetSrcInfoForPc(pc, codePtr, &length, &pcBeg, NULL); DECACHE_STACK_INFO(); TclLogCommandInfo(interp, codePtr->source, bytes, bytes ? length : 0, pcBeg, tosPtr); CACHE_STACK_INFO(); } iPtr->flags &= ~ERR_ALREADY_LOGGED; /* * Clear all expansions that may have started after the last * INST_BEGIN_CATCH. */ while (auxObjList) { if ((catchTop != initCatchTop) && (*catchTop > (ptrdiff_t) auxObjList->internalRep.twoPtrValue.ptr2)) { break; } POP_TAUX_OBJ(); } /* * We must not catch if the script in progress has been canceled with * the TCL_CANCEL_UNWIND flag. Instead, it blows outwards until we * either hit another interpreter (presumably where the script in * progress has not been canceled) or we get to the top-level. We do * NOT modify the interpreter result here because we know it will * already be set prior to vectoring down to this point in the code. */ if (TclCanceled(iPtr) && (Tcl_Canceled(interp, 0) == TCL_ERROR)) { #ifdef TCL_COMPILE_DEBUG if (traceInstructions) { fprintf(stdout, " ... cancel with unwind, returning %s\n", StringForResultCode(result)); } #endif goto abnormalReturn; } /* * We must not catch an exceeded limit. Instead, it blows outwards * until we either hit another interpreter (presumably where the limit * is not exceeded) or we get to the top-level. */ if (TclLimitExceeded(iPtr->limit)) { #ifdef TCL_COMPILE_DEBUG if (traceInstructions) { fprintf(stdout, " ... limit exceeded, returning %s\n", StringForResultCode(result)); } #endif goto abnormalReturn; } if (catchTop == initCatchTop) { #ifdef TCL_COMPILE_DEBUG if (traceInstructions) { fprintf(stdout, " ... no enclosing catch, returning %s\n", StringForResultCode(result)); } #endif goto abnormalReturn; } rangePtr = GetExceptRangeForPc(pc, TCL_ERROR, codePtr); if (rangePtr == NULL) { /* * This is only possible when compiling a [catch] that sends its * script to INST_EVAL. Cannot correct the compiler without * breaking compat with previous .tbc compiled scripts. */ #ifdef TCL_COMPILE_DEBUG if (traceInstructions) { fprintf(stdout, " ... no enclosing catch, returning %s\n", StringForResultCode(result)); } #endif goto abnormalReturn; } /* * A catch exception range (rangePtr) was found to handle an * "exception". It was found either by checkForCatch just above or by * an instruction during break, continue, or error processing. Jump to * its catchOffset after unwinding the operand stack to the depth it * had when starting to execute the range's catch command. */ processCatch: while (CURR_DEPTH > *catchTop) { valuePtr = POP_OBJECT(); TclDecrRefCount(valuePtr); } #ifdef TCL_COMPILE_DEBUG if (traceInstructions) { fprintf(stdout, " ... found catch at %d, catchTop=%d, " "unwound to %ld, new pc %u\n", rangePtr->codeOffset, (int) (catchTop - initCatchTop - 1), (long) *catchTop, (unsigned) rangePtr->catchOffset); } #endif pc = (codePtr->codeStart + rangePtr->catchOffset); NEXT_INST_F(0, 0, 0); /* Restart the execution loop at pc. */ /* * end of infinite loop dispatching on instructions. */ /* * Abnormal return code. Restore the stack to state it had when * starting to execute the ByteCode. Panic if the stack is below the * initial level. */ abnormalReturn: TCL_DTRACE_INST_LAST(); /* * Clear all expansions and same-level NR calls. * * Note that expansion markers have a NULL type; avoid removing other * markers. */ while (auxObjList) { POP_TAUX_OBJ(); } while (tosPtr > initTosPtr) { objPtr = POP_OBJECT(); Tcl_DecrRefCount(objPtr); } if (tosPtr < initTosPtr) { fprintf(stderr, "\nTclNRExecuteByteCode: abnormal return at pc %u: " "stack top %d < entry stack top %d\n", (unsigned)(pc - codePtr->codeStart), (unsigned) CURR_DEPTH, (unsigned) 0); Tcl_Panic("TclNRExecuteByteCode execution failure: end stack top < start stack top"); } CLANG_ASSERT(bcFramePtr); } iPtr->cmdFramePtr = bcFramePtr->nextPtr; TclReleaseByteCode(codePtr); TclStackFree(interp, TD); /* free my stack */ return result; /* * INST_START_CMD failure case removed where it doesn't bother that much * * Remark that if the interpreter is marked for deletion its * compileEpoch is modified, so that the epoch check also verifies * that the interp is not deleted. If no outside call has been made * since the last check, it is safe to omit the check. * case INST_START_CMD: */ instStartCmdFailed: { const char *bytes; checkInterp = 1; length = 0; /* * We used to switch to direct eval; for NRE-awareness we now * compile and eval the command so that this evaluation does not * add a new TEBC instance. [Bug 2910748] */ if (TclInterpReady(interp) == TCL_ERROR) { goto gotError; } codePtr->flags |= TCL_BYTECODE_RECOMPILE; bytes = GetSrcInfoForPc(pc, codePtr, &length, NULL, NULL); opnd = TclGetUInt4AtPtr(pc+1); pc += (opnd-1); assert(bytes); PUSH_OBJECT(Tcl_NewStringObj(bytes, length)); goto instEvalStk; } } #undef codePtr #undef iPtr #undef bcFramePtr #undef initCatchTop #undef initTosPtr #undef auxObjList #undef catchTop #undef TCONST #undef esPtr static int FinalizeOONext( ClientData data[], Tcl_Interp *interp, int result) { Interp *iPtr = (Interp *) interp; CallContext *contextPtr = data[1]; /* * Reset the variable lookup frame. */ iPtr->varFramePtr = data[0]; /* * Restore the call chain context index as we've finished the inner invoke * and want to operate in the outer context again. */ contextPtr->index = PTR2INT(data[2]); contextPtr->skip = PTR2INT(data[3]); contextPtr->oPtr->flags &= ~FILTER_HANDLING; return result; } static int FinalizeOONextFilter( ClientData data[], Tcl_Interp *interp, int result) { Interp *iPtr = (Interp *) interp; CallContext *contextPtr = data[1]; /* * Reset the variable lookup frame. */ iPtr->varFramePtr = data[0]; /* * Restore the call chain context index as we've finished the inner invoke * and want to operate in the outer context again. */ contextPtr->index = PTR2INT(data[2]); contextPtr->skip = PTR2INT(data[3]); contextPtr->oPtr->flags |= FILTER_HANDLING; return result; } /* *---------------------------------------------------------------------- * * ExecuteExtendedBinaryMathOp, ExecuteExtendedUnaryMathOp -- * * These functions do advanced math for binary and unary operators * respectively, so that the main TEBC code does not bear the cost of * them. * * Results: * A Tcl_Obj* result, or a NULL (in which case valuePtr is updated to * hold the result value), or one of the special flag values * GENERAL_ARITHMETIC_ERROR, EXPONENT_OF_ZERO or DIVIDED_BY_ZERO. The * latter two signify a zero value raised to a negative power or a value * divided by zero, respectively. With GENERAL_ARITHMETIC_ERROR, all * error information will have already been reported in the interpreter * result. * * Side effects: * May update the Tcl_Obj indicated valuePtr if it is unshared. Will * return a NULL when that happens. * *---------------------------------------------------------------------- */ static Tcl_Obj * ExecuteExtendedBinaryMathOp( Tcl_Interp *interp, /* Where to report errors. */ int opcode, /* What operation to perform. */ Tcl_Obj **constants, /* The execution environment's constants. */ Tcl_Obj *valuePtr, /* The first operand on the stack. */ Tcl_Obj *value2Ptr) /* The second operand on the stack. */ { #define WIDE_RESULT(w) \ if (Tcl_IsShared(valuePtr)) { \ return Tcl_NewWideIntObj(w); \ } else { \ TclSetIntObj(valuePtr, w); \ return NULL; \ } #define BIG_RESULT(b) \ if (Tcl_IsShared(valuePtr)) { \ return Tcl_NewBignumObj(b); \ } else { \ Tcl_SetBignumObj(valuePtr, b); \ return NULL; \ } #define DOUBLE_RESULT(d) \ if (Tcl_IsShared(valuePtr)) { \ TclNewDoubleObj(objResultPtr, (d)); \ return objResultPtr; \ } else { \ Tcl_SetDoubleObj(valuePtr, (d)); \ return NULL; \ } int type1, type2; ClientData ptr1, ptr2; double d1, d2, dResult; Tcl_WideInt w1, w2, wResult; mp_int big1, big2, bigResult, bigRemainder; Tcl_Obj *objResultPtr; int invalid, numPos, zero; long shift; (void) GetNumberFromObj(NULL, valuePtr, &ptr1, &type1); (void) GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2); switch (opcode) { case INST_MOD: /* TODO: Attempts to re-use unshared operands on stack */ w2 = 0; /* silence gcc warning */ if (type2 == TCL_NUMBER_WIDE) { w2 = *((const Tcl_WideInt *)ptr2); if (w2 == 0) { return DIVIDED_BY_ZERO; } if ((w2 == 1) || (w2 == -1)) { /* * Div. by |1| always yields remainder of 0. */ return constants[0]; } } if (type1 == TCL_NUMBER_WIDE) { w1 = *((const Tcl_WideInt *)ptr1); if (w1 == 0) { /* * 0 % (non-zero) always yields remainder of 0. */ return constants[0]; } if (type2 != TCL_NUMBER_BIG) { Tcl_WideInt wQuotient, wRemainder; Tcl_GetWideIntFromObj(NULL, value2Ptr, &w2); wQuotient = w1 / w2; /* * Force Tcl's integer division rules. * TODO: examine for logic simplification */ if (((wQuotient < (Tcl_WideInt) 0) || ((wQuotient == (Tcl_WideInt) 0) && ((w1 < (Tcl_WideInt)0 && w2 > (Tcl_WideInt)0) || (w1 > (Tcl_WideInt)0 && w2 < (Tcl_WideInt)0)))) && (wQuotient * w2 != w1)) { wQuotient -= (Tcl_WideInt) 1; } wRemainder = w1 - w2*wQuotient; WIDE_RESULT(wRemainder); } Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); /* TODO: internals intrusion */ if ((w1 > ((Tcl_WideInt) 0)) ^ (big2.sign == MP_ZPOS)) { /* * Arguments are opposite sign; remainder is sum. */ TclInitBignumFromWideInt(&big1, w1); mp_add(&big2, &big1, &big2); mp_clear(&big1); BIG_RESULT(&big2); } /* * Arguments are same sign; remainder is first operand. */ mp_clear(&big2); return NULL; } Tcl_GetBignumFromObj(NULL, valuePtr, &big1); Tcl_GetBignumFromObj(NULL, value2Ptr, &big2); mp_init(&bigResult); mp_init(&bigRemainder); mp_div(&big1, &big2, &bigResult, &bigRemainder); if (!mp_iszero(&bigRemainder) && (bigRemainder.sign != big2.sign)) { /* * Convert to Tcl's integer division rules. */ mp_sub_d(&bigResult, 1, &bigResult); mp_add(&bigRemainder, &big2, &bigRemainder); } mp_copy(&bigRemainder, &bigResult); mp_clear(&bigRemainder); mp_clear(&big1); mp_clear(&big2); BIG_RESULT(&bigResult); case INST_LSHIFT: case INST_RSHIFT: { /* * Reject negative shift argument. */ switch (type2) { case TCL_NUMBER_WIDE: invalid = (*((const Tcl_WideInt *)ptr2) < (Tcl_WideInt)0); break; case TCL_NUMBER_BIG: Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); invalid = mp_isneg(&big2); mp_clear(&big2); break; default: /* Unused, here to silence compiler warning */ invalid = 0; } if (invalid) { Tcl_SetObjResult(interp, Tcl_NewStringObj( "negative shift argument", -1)); return GENERAL_ARITHMETIC_ERROR; } /* * Zero shifted any number of bits is still zero. */ if ((type1==TCL_NUMBER_WIDE) && (*((const Tcl_WideInt *)ptr1) == (Tcl_WideInt)0)) { return constants[0]; } if (opcode == INST_LSHIFT) { /* * Large left shifts create integer overflow. * * BEWARE! Can't use Tcl_GetIntFromObj() here because that * converts values in the (unsigned) range to their signed int * counterparts, leading to incorrect results. */ if ((type2 != TCL_NUMBER_WIDE) || (*((const Tcl_WideInt *)ptr2) > INT_MAX)) { /* * Technically, we could hold the value (1 << (INT_MAX+1)) in * an mp_int, but since we're using mp_mul_2d() to do the * work, and it takes only an int argument, that's a good * place to draw the line. */ Tcl_SetObjResult(interp, Tcl_NewStringObj( "integer value too large to represent", -1)); return GENERAL_ARITHMETIC_ERROR; } shift = (int)(*((const Tcl_WideInt *)ptr2)); /* * Handle shifts within the native wide range. */ if ((type1 != TCL_NUMBER_BIG) && ((size_t)shift < CHAR_BIT*sizeof(Tcl_WideInt))) { TclGetWideIntFromObj(NULL, valuePtr, &w1); if (!((w1>0 ? w1 : ~w1) & -(((Tcl_WideInt)1) << (CHAR_BIT*sizeof(Tcl_WideInt) - 1 - shift)))) { WIDE_RESULT(w1 << shift); } } } else { /* * Quickly force large right shifts to 0 or -1. */ if ((type2 != TCL_NUMBER_WIDE) || (*(const Tcl_WideInt *)ptr2 > INT_MAX)) { /* * Again, technically, the value to be shifted could be an * mp_int so huge that a right shift by (INT_MAX+1) bits could * not take us to the result of 0 or -1, but since we're using * mp_div_2d to do the work, and it takes only an int * argument, we draw the line there. */ switch (type1) { case TCL_NUMBER_WIDE: zero = (*(const Tcl_WideInt *)ptr1 > (Tcl_WideInt)0); break; case TCL_NUMBER_BIG: Tcl_TakeBignumFromObj(NULL, valuePtr, &big1); zero = (!mp_isneg(&big1)); mp_clear(&big1); break; default: /* Unused, here to silence compiler warning. */ zero = 0; } if (zero) { return constants[0]; } WIDE_RESULT(-1); } shift = (int)(*(const Tcl_WideInt *)ptr2); /* * Handle shifts within the native wide range. */ if (type1 == TCL_NUMBER_WIDE) { w1 = *(const Tcl_WideInt *)ptr1; if ((size_t)shift >= CHAR_BIT*sizeof(Tcl_WideInt)) { if (w1 >= (Tcl_WideInt)0) { return constants[0]; } WIDE_RESULT(-1); } WIDE_RESULT(w1 >> shift); } } Tcl_TakeBignumFromObj(NULL, valuePtr, &big1); mp_init(&bigResult); if (opcode == INST_LSHIFT) { mp_mul_2d(&big1, shift, &bigResult); } else { mp_init(&bigRemainder); mp_div_2d(&big1, shift, &bigResult, &bigRemainder); if (mp_isneg(&bigRemainder)) { /* * Convert to Tcl's integer division rules. */ mp_sub_d(&bigResult, 1, &bigResult); } mp_clear(&bigRemainder); } mp_clear(&big1); BIG_RESULT(&bigResult); } case INST_BITOR: case INST_BITXOR: case INST_BITAND: if ((type1 == TCL_NUMBER_BIG) || (type2 == TCL_NUMBER_BIG)) { mp_int *First, *Second; Tcl_TakeBignumFromObj(NULL, valuePtr, &big1); Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); /* * Count how many positive arguments we have. If only one of the * arguments is negative, store it in 'Second'. */ if (!mp_isneg(&big1)) { numPos = 1 + !mp_isneg(&big2); First = &big1; Second = &big2; } else { First = &big2; Second = &big1; numPos = (!mp_isneg(First)); } mp_init(&bigResult); switch (opcode) { case INST_BITAND: switch (numPos) { case 2: /* * Both arguments positive, base case. */ mp_and(First, Second, &bigResult); break; case 1: /* * First is positive; second negative: * P & N = P & ~~N = P&~(-N-1) = P & (P ^ (-N-1)) */ mp_neg(Second, Second); mp_sub_d(Second, 1, Second); mp_xor(First, Second, &bigResult); mp_and(First, &bigResult, &bigResult); break; case 0: /* * Both arguments negative: * a & b = ~ (~a | ~b) = -(-a-1|-b-1)-1 */ mp_neg(First, First); mp_sub_d(First, 1, First); mp_neg(Second, Second); mp_sub_d(Second, 1, Second); mp_or(First, Second, &bigResult); mp_neg(&bigResult, &bigResult); mp_sub_d(&bigResult, 1, &bigResult); break; } break; case INST_BITOR: switch (numPos) { case 2: /* * Both arguments positive, base case. */ mp_or(First, Second, &bigResult); break; case 1: /* * First is positive; second negative: * N|P = ~(~N&~P) = ~((-N-1)&~P) = -((-N-1)&((-N-1)^P))-1 */ mp_neg(Second, Second); mp_sub_d(Second, 1, Second); mp_xor(First, Second, &bigResult); mp_and(Second, &bigResult, &bigResult); mp_neg(&bigResult, &bigResult); mp_sub_d(&bigResult, 1, &bigResult); break; case 0: /* * Both arguments negative: * a | b = ~ (~a & ~b) = -(-a-1&-b-1)-1 */ mp_neg(First, First); mp_sub_d(First, 1, First); mp_neg(Second, Second); mp_sub_d(Second, 1, Second); mp_and(First, Second, &bigResult); mp_neg(&bigResult, &bigResult); mp_sub_d(&bigResult, 1, &bigResult); break; } break; case INST_BITXOR: switch (numPos) { case 2: /* * Both arguments positive, base case. */ mp_xor(First, Second, &bigResult); break; case 1: /* * First is positive; second negative: * P^N = ~(P^~N) = -(P^(-N-1))-1 */ mp_neg(Second, Second); mp_sub_d(Second, 1, Second); mp_xor(First, Second, &bigResult); mp_neg(&bigResult, &bigResult); mp_sub_d(&bigResult, 1, &bigResult); break; case 0: /* * Both arguments negative: * a ^ b = (~a ^ ~b) = (-a-1^-b-1) */ mp_neg(First, First); mp_sub_d(First, 1, First); mp_neg(Second, Second); mp_sub_d(Second, 1, Second); mp_xor(First, Second, &bigResult); break; } break; } mp_clear(&big1); mp_clear(&big2); BIG_RESULT(&bigResult); } if ((type1 == TCL_NUMBER_WIDE) || (type2 == TCL_NUMBER_WIDE)) { TclGetWideIntFromObj(NULL, valuePtr, &w1); TclGetWideIntFromObj(NULL, value2Ptr, &w2); switch (opcode) { case INST_BITAND: wResult = w1 & w2; break; case INST_BITOR: wResult = w1 | w2; break; case INST_BITXOR: wResult = w1 ^ w2; break; default: /* Unused, here to silence compiler warning. */ wResult = 0; } WIDE_RESULT(wResult); } w1 = *((const Tcl_WideInt *)ptr1); w2 = *((const Tcl_WideInt *)ptr2); switch (opcode) { case INST_BITAND: wResult = w1 & w2; break; case INST_BITOR: wResult = w1 | w2; break; case INST_BITXOR: wResult = w1 ^ w2; break; default: /* Unused, here to silence compiler warning. */ wResult = 0; } WIDE_RESULT(wResult); case INST_EXPON: { int oddExponent = 0, negativeExponent = 0; unsigned short base; if ((type1 == TCL_NUMBER_DOUBLE) || (type2 == TCL_NUMBER_DOUBLE)) { Tcl_GetDoubleFromObj(NULL, valuePtr, &d1); Tcl_GetDoubleFromObj(NULL, value2Ptr, &d2); if (d1==0.0 && d2<0.0) { return EXPONENT_OF_ZERO; } dResult = pow(d1, d2); goto doubleResult; } w2 = 0; if (type2 == TCL_NUMBER_WIDE) { w2 = *((const Tcl_WideInt *) ptr2); if (w2 == 0) { /* * Anything to the zero power is 1. */ return constants[1]; } else if (w2 == 1) { /* * Anything to the first power is itself */ return NULL; } } switch (type2) { case TCL_NUMBER_WIDE: w2 = *((const Tcl_WideInt *)ptr2); negativeExponent = (w2 < 0); oddExponent = (int) (w2 & (Tcl_WideInt)1); break; case TCL_NUMBER_BIG: Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); negativeExponent = mp_isneg(&big2); mp_mod_2d(&big2, 1, &big2); oddExponent = !mp_iszero(&big2); mp_clear(&big2); break; } if (type1 == TCL_NUMBER_WIDE) { w1 = *((const Tcl_WideInt *)ptr1); } if (negativeExponent) { if (type1 == TCL_NUMBER_WIDE) { switch (w1) { case 0: /* * Zero to a negative power is div by zero error. */ return EXPONENT_OF_ZERO; case -1: if (oddExponent) { WIDE_RESULT(-1); } /* fallthrough */ case 1: /* * 1 to any power is 1. */ return constants[1]; } } /* * Integers with magnitude greater than 1 raise to a negative * power yield the answer zero (see TIP 123). */ return constants[0]; } if (type1 == TCL_NUMBER_WIDE) { switch (w1) { case 0: /* * Zero to a positive power is zero. */ return constants[0]; case 1: /* * 1 to any power is 1. */ return constants[1]; case -1: if (!oddExponent) { return constants[1]; } WIDE_RESULT(-1); } } /* * We refuse to accept exponent arguments that exceed one mp_digit * which means the max exponent value is 2**28-1 = 0x0fffffff = * 268435455, which fits into a signed 32 bit int which is within the * range of the long int type. This means any numeric Tcl_Obj value * not using TCL_NUMBER_WIDE type must hold a value larger than we * accept. */ if (type2 != TCL_NUMBER_WIDE) { Tcl_SetObjResult(interp, Tcl_NewStringObj( "exponent too large", -1)); return GENERAL_ARITHMETIC_ERROR; } if (type1 == TCL_NUMBER_WIDE) { if (w1 == 2) { /* * Reduce small powers of 2 to shifts. */ if ((Tcl_WideUInt) w2 < (Tcl_WideUInt) CHAR_BIT*sizeof(Tcl_WideInt) - 1) { WIDE_RESULT(((Tcl_WideInt) 1) << (int)w2); } goto overflowExpon; } if (w1 == -2) { int signum = oddExponent ? -1 : 1; /* * Reduce small powers of 2 to shifts. */ if ((Tcl_WideUInt)w2 < CHAR_BIT*sizeof(Tcl_WideInt) - 1){ WIDE_RESULT(signum * (((Tcl_WideInt) 1) << (int) w2)); } goto overflowExpon; } } if (type1 == TCL_NUMBER_WIDE) { w1 = *((const Tcl_WideInt *) ptr1); } else { goto overflowExpon; } if (w2 - 2 < (long)MaxBase64Size && w1 <= MaxBase64[w2 - 2] && w1 >= -MaxBase64[w2 - 2]) { /* * Small powers of integers whose result is wide. */ wResult = w1 * w1; /* b**2 */ switch (w2) { case 2: break; case 3: wResult *= w1; /* b**3 */ break; case 4: wResult *= wResult; /* b**4 */ break; case 5: wResult *= wResult; /* b**4 */ wResult *= w1; /* b**5 */ break; case 6: wResult *= w1; /* b**3 */ wResult *= wResult; /* b**6 */ break; case 7: wResult *= w1; /* b**3 */ wResult *= wResult; /* b**6 */ wResult *= w1; /* b**7 */ break; case 8: wResult *= wResult; /* b**4 */ wResult *= wResult; /* b**8 */ break; case 9: wResult *= wResult; /* b**4 */ wResult *= wResult; /* b**8 */ wResult *= w1; /* b**9 */ break; case 10: wResult *= wResult; /* b**4 */ wResult *= w1; /* b**5 */ wResult *= wResult; /* b**10 */ break; case 11: wResult *= wResult; /* b**4 */ wResult *= w1; /* b**5 */ wResult *= wResult; /* b**10 */ wResult *= w1; /* b**11 */ break; case 12: wResult *= w1; /* b**3 */ wResult *= wResult; /* b**6 */ wResult *= wResult; /* b**12 */ break; case 13: wResult *= w1; /* b**3 */ wResult *= wResult; /* b**6 */ wResult *= wResult; /* b**12 */ wResult *= w1; /* b**13 */ break; case 14: wResult *= w1; /* b**3 */ wResult *= wResult; /* b**6 */ wResult *= w1; /* b**7 */ wResult *= wResult; /* b**14 */ break; case 15: wResult *= w1; /* b**3 */ wResult *= wResult; /* b**6 */ wResult *= w1; /* b**7 */ wResult *= wResult; /* b**14 */ wResult *= w1; /* b**15 */ break; case 16: wResult *= wResult; /* b**4 */ wResult *= wResult; /* b**8 */ wResult *= wResult; /* b**16 */ break; } WIDE_RESULT(wResult); } /* * Handle cases of powers > 16 that still fit in a 64-bit word by * doing table lookup. */ if (w1 - 3 >= 0 && w1 - 2 < (long)Exp64IndexSize && w2 - 2 < (long)(Exp64ValueSize + MaxBase64Size)) { base = Exp64Index[w1 - 3] + (unsigned short) (w2 - 2 - MaxBase64Size); if (base < Exp64Index[w1 - 2]) { /* * 64-bit number raised to intermediate power, done by * table lookup. */ WIDE_RESULT(Exp64Value[base]); } } if (-w1 - 3 >= 0 && -w1 - 2 < (long)Exp64IndexSize && w2 - 2 < (long)(Exp64ValueSize + MaxBase64Size)) { base = Exp64Index[-w1 - 3] + (unsigned short) (w2 - 2 - MaxBase64Size); if (base < Exp64Index[-w1 - 2]) { /* * 64-bit number raised to intermediate power, done by * table lookup. */ wResult = oddExponent ? -Exp64Value[base] : Exp64Value[base]; WIDE_RESULT(wResult); } } overflowExpon: Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); if (big2.used > 1) { mp_clear(&big2); Tcl_SetObjResult(interp, Tcl_NewStringObj( "exponent too large", -1)); return GENERAL_ARITHMETIC_ERROR; } Tcl_TakeBignumFromObj(NULL, valuePtr, &big1); mp_init(&bigResult); mp_expt_d_ex(&big1, big2.dp[0], &bigResult, 1); mp_clear(&big1); mp_clear(&big2); BIG_RESULT(&bigResult); } case INST_ADD: case INST_SUB: case INST_MULT: case INST_DIV: if ((type1 == TCL_NUMBER_DOUBLE) || (type2 == TCL_NUMBER_DOUBLE)) { /* * At least one of the values is floating-point, so perform * floating point calculations. */ Tcl_GetDoubleFromObj(NULL, valuePtr, &d1); Tcl_GetDoubleFromObj(NULL, value2Ptr, &d2); switch (opcode) { case INST_ADD: dResult = d1 + d2; break; case INST_SUB: dResult = d1 - d2; break; case INST_MULT: dResult = d1 * d2; break; case INST_DIV: #ifndef IEEE_FLOATING_POINT if (d2 == 0.0) { return DIVIDED_BY_ZERO; } #endif /* * We presume that we are running with zero-divide unmasked if * we're on an IEEE box. Otherwise, this statement might cause * demons to fly out our noses. */ dResult = d1 / d2; break; default: /* Unused, here to silence compiler warning. */ dResult = 0; } doubleResult: #ifndef ACCEPT_NAN /* * Check now for IEEE floating-point error. */ if (TclIsNaN(dResult)) { TclExprFloatError(interp, dResult); return GENERAL_ARITHMETIC_ERROR; } #endif DOUBLE_RESULT(dResult); } if ((type1 != TCL_NUMBER_BIG) && (type2 != TCL_NUMBER_BIG)) { TclGetWideIntFromObj(NULL, valuePtr, &w1); TclGetWideIntFromObj(NULL, value2Ptr, &w2); switch (opcode) { case INST_ADD: wResult = w1 + w2; if ((type1 == TCL_NUMBER_WIDE) || (type2 == TCL_NUMBER_WIDE)) { /* * Check for overflow. */ if (Overflowing(w1, w2, wResult)) { goto overflowBasic; } } break; case INST_SUB: wResult = w1 - w2; if ((type1 == TCL_NUMBER_WIDE) || (type2 == TCL_NUMBER_WIDE)) { /* * Must check for overflow. The macro tests for overflows * in sums by looking at the sign bits. As we have a * subtraction here, we are adding -w2. As -w2 could in * turn overflow, we test with ~w2 instead: it has the * opposite sign bit to w2 so it does the job. Note that * the only "bad" case (w2==0) is irrelevant for this * macro, as in that case w1 and wResult have the same * sign and there is no overflow anyway. */ if (Overflowing(w1, ~w2, wResult)) { goto overflowBasic; } } break; case INST_MULT: if ((w1 < INT_MIN) || (w1 > INT_MAX) || (w2 < INT_MIN) || (w2 > INT_MAX)) { goto overflowBasic; } wResult = w1 * w2; break; case INST_DIV: if (w2 == 0) { return DIVIDED_BY_ZERO; } /* * Need a bignum to represent (LLONG_MIN / -1) */ if ((w1 == LLONG_MIN) && (w2 == -1)) { goto overflowBasic; } wResult = w1 / w2; /* * Force Tcl's integer division rules. * TODO: examine for logic simplification */ if (((wResult < 0) || ((wResult == 0) && ((w1 < 0 && w2 > 0) || (w1 > 0 && w2 < 0)))) && (wResult*w2 != w1)) { wResult -= 1; } break; default: /* * Unused, here to silence compiler warning. */ wResult = 0; } WIDE_RESULT(wResult); } overflowBasic: Tcl_TakeBignumFromObj(NULL, valuePtr, &big1); Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); mp_init(&bigResult); switch (opcode) { case INST_ADD: mp_add(&big1, &big2, &bigResult); break; case INST_SUB: mp_sub(&big1, &big2, &bigResult); break; case INST_MULT: mp_mul(&big1, &big2, &bigResult); break; case INST_DIV: if (mp_iszero(&big2)) { mp_clear(&big1); mp_clear(&big2); mp_clear(&bigResult); return DIVIDED_BY_ZERO; } mp_init(&bigRemainder); mp_div(&big1, &big2, &bigResult, &bigRemainder); /* TODO: internals intrusion */ if (!mp_iszero(&bigRemainder) && (bigRemainder.sign != big2.sign)) { /* * Convert to Tcl's integer division rules. */ mp_sub_d(&bigResult, 1, &bigResult); mp_add(&bigRemainder, &big2, &bigRemainder); } mp_clear(&bigRemainder); break; } mp_clear(&big1); mp_clear(&big2); BIG_RESULT(&bigResult); } Tcl_Panic("unexpected opcode"); return NULL; } static Tcl_Obj * ExecuteExtendedUnaryMathOp( int opcode, /* What operation to perform. */ Tcl_Obj *valuePtr) /* The operand on the stack. */ { ClientData ptr; int type; Tcl_WideInt w; mp_int big; Tcl_Obj *objResultPtr; (void) GetNumberFromObj(NULL, valuePtr, &ptr, &type); switch (opcode) { case INST_BITNOT: if (type == TCL_NUMBER_WIDE) { w = *((const Tcl_WideInt *) ptr); WIDE_RESULT(~w); } Tcl_TakeBignumFromObj(NULL, valuePtr, &big); /* ~a = - a - 1 */ mp_neg(&big, &big); mp_sub_d(&big, 1, &big); BIG_RESULT(&big); case INST_UMINUS: switch (type) { case TCL_NUMBER_DOUBLE: DOUBLE_RESULT(-(*((const double *) ptr))); case TCL_NUMBER_WIDE: w = *((const Tcl_WideInt *) ptr); if (w != LLONG_MIN) { WIDE_RESULT(-w); } TclInitBignumFromWideInt(&big, w); break; default: Tcl_TakeBignumFromObj(NULL, valuePtr, &big); } mp_neg(&big, &big); BIG_RESULT(&big); } Tcl_Panic("unexpected opcode"); return NULL; } #undef WIDE_RESULT #undef BIG_RESULT #undef DOUBLE_RESULT /* *---------------------------------------------------------------------- * * CompareTwoNumbers -- * * This function compares a pair of numbers in Tcl_Objs. Each argument * must already be known to be numeric and not NaN. * * Results: * One of MP_LT, MP_EQ or MP_GT, depending on whether valuePtr is less * than, equal to, or greater than value2Ptr (respectively). * * Side effects: * None, provided both values are numeric. * *---------------------------------------------------------------------- */ int TclCompareTwoNumbers( Tcl_Obj *valuePtr, Tcl_Obj *value2Ptr) { int type1 = TCL_NUMBER_NAN, type2 = TCL_NUMBER_NAN, compare; ClientData ptr1, ptr2; mp_int big1, big2; double d1, d2, tmp; Tcl_WideInt w1, w2; (void) GetNumberFromObj(NULL, valuePtr, &ptr1, &type1); (void) GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2); switch (type1) { case TCL_NUMBER_WIDE: w1 = *((const Tcl_WideInt *)ptr1); switch (type2) { case TCL_NUMBER_WIDE: w2 = *((const Tcl_WideInt *)ptr2); wideCompare: return (w1 < w2) ? MP_LT : ((w1 > w2) ? MP_GT : MP_EQ); case TCL_NUMBER_DOUBLE: d2 = *((const double *)ptr2); d1 = (double) w1; /* * If the double has a fractional part, or if the long can be * converted to double without loss of precision, then compare as * doubles. */ if (DBL_MANT_DIG > CHAR_BIT*sizeof(Tcl_WideInt) || w1 == (Tcl_WideInt) d1 || modf(d2, &tmp) != 0.0) { goto doubleCompare; } /* * Otherwise, to make comparision based on full precision, need to * convert the double to a suitably sized integer. * * Need this to get comparsions like * expr 20000000000000003 < 20000000000000004.0 * right. Converting the first argument to double will yield two * double values that are equivalent within double precision. * Converting the double to an integer gets done exactly, then * integer comparison can tell the difference. */ if (d2 < (double)LLONG_MIN) { return MP_GT; } if (d2 > (double)LLONG_MAX) { return MP_LT; } w2 = (Tcl_WideInt) d2; goto wideCompare; case TCL_NUMBER_BIG: Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); if (mp_isneg(&big2)) { compare = MP_GT; } else { compare = MP_LT; } mp_clear(&big2); return compare; } case TCL_NUMBER_DOUBLE: d1 = *((const double *)ptr1); switch (type2) { case TCL_NUMBER_DOUBLE: d2 = *((const double *)ptr2); doubleCompare: return (d1 < d2) ? MP_LT : ((d1 > d2) ? MP_GT : MP_EQ); case TCL_NUMBER_WIDE: w2 = *((const Tcl_WideInt *)ptr2); d2 = (double) w2; if (DBL_MANT_DIG > CHAR_BIT*sizeof(Tcl_WideInt) || w2 == (Tcl_WideInt) d2 || modf(d1, &tmp) != 0.0) { goto doubleCompare; } if (d1 < (double)LLONG_MIN) { return MP_LT; } if (d1 > (double)LLONG_MAX) { return MP_GT; } w1 = (Tcl_WideInt) d1; goto wideCompare; case TCL_NUMBER_BIG: if (TclIsInfinite(d1)) { return (d1 > 0.0) ? MP_GT : MP_LT; } Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); if ((d1 < (double)LLONG_MAX) && (d1 > (double)LLONG_MIN)) { if (mp_isneg(&big2)) { compare = MP_GT; } else { compare = MP_LT; } mp_clear(&big2); return compare; } if (DBL_MANT_DIG > CHAR_BIT*sizeof(long) && modf(d1, &tmp) != 0.0) { d2 = TclBignumToDouble(&big2); mp_clear(&big2); goto doubleCompare; } Tcl_InitBignumFromDouble(NULL, d1, &big1); goto bigCompare; } case TCL_NUMBER_BIG: Tcl_TakeBignumFromObj(NULL, valuePtr, &big1); switch (type2) { case TCL_NUMBER_WIDE: compare = mp_cmp_d(&big1, 0); mp_clear(&big1); return compare; case TCL_NUMBER_DOUBLE: d2 = *((const double *)ptr2); if (TclIsInfinite(d2)) { compare = (d2 > 0.0) ? MP_LT : MP_GT; mp_clear(&big1); return compare; } if ((d2 < (double)LLONG_MAX) && (d2 > (double)LLONG_MIN)) { compare = mp_cmp_d(&big1, 0); mp_clear(&big1); return compare; } if (DBL_MANT_DIG > CHAR_BIT*sizeof(long) && modf(d2, &tmp) != 0.0) { d1 = TclBignumToDouble(&big1); mp_clear(&big1); goto doubleCompare; } Tcl_InitBignumFromDouble(NULL, d2, &big2); goto bigCompare; case TCL_NUMBER_BIG: Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); bigCompare: compare = mp_cmp(&big1, &big2); mp_clear(&big1); mp_clear(&big2); return compare; } default: Tcl_Panic("unexpected number type"); return TCL_ERROR; } } #ifdef TCL_COMPILE_DEBUG /* *---------------------------------------------------------------------- * * PrintByteCodeInfo -- * * This procedure prints a summary about a bytecode object to stdout. It * is called by TclNRExecuteByteCode when starting to execute the bytecode * object if tclTraceExec has the value 2 or more. * * Results: * None. * * Side effects: * None. * *---------------------------------------------------------------------- */ static void PrintByteCodeInfo( register ByteCode *codePtr) /* The bytecode whose summary is printed to * stdout. */ { Proc *procPtr = codePtr->procPtr; Interp *iPtr = (Interp *) *codePtr->interpHandle; fprintf(stdout, "\nExecuting ByteCode 0x%p, refCt %" TCL_Z_MODIFIER "u, epoch %u, interp 0x%p (epoch %u)\n", codePtr, (size_t)codePtr->refCount, codePtr->compileEpoch, iPtr, iPtr->compileEpoch); fprintf(stdout, " Source: "); TclPrintSource(stdout, codePtr->source, 60); fprintf(stdout, "\n Cmds %d, src %d, inst %u, litObjs %u, aux %d, stkDepth %u, code/src %.2f\n", codePtr->numCommands, codePtr->numSrcBytes, codePtr->numCodeBytes, codePtr->numLitObjects, codePtr->numAuxDataItems, codePtr->maxStackDepth, #ifdef TCL_COMPILE_STATS codePtr->numSrcBytes? ((float)codePtr->structureSize)/codePtr->numSrcBytes : #endif 0.0); #ifdef TCL_COMPILE_STATS fprintf(stdout, " Code %lu = header %lu+inst %d+litObj %lu+exc %lu+aux %lu+cmdMap %d\n", (unsigned long) codePtr->structureSize, (unsigned long) (sizeof(ByteCode)-sizeof(size_t)-sizeof(Tcl_Time)), codePtr->numCodeBytes, (unsigned long) (codePtr->numLitObjects * sizeof(Tcl_Obj *)), (unsigned long) (codePtr->numExceptRanges*sizeof(ExceptionRange)), (unsigned long) (codePtr->numAuxDataItems * sizeof(AuxData)), codePtr->numCmdLocBytes); #endif /* TCL_COMPILE_STATS */ if (procPtr != NULL) { fprintf(stdout, " Proc 0x%p, refCt %d, args %d, compiled locals %d\n", procPtr, procPtr->refCount, procPtr->numArgs, procPtr->numCompiledLocals); } } #endif /* TCL_COMPILE_DEBUG */ /* *---------------------------------------------------------------------- * * ValidatePcAndStackTop -- * * This procedure is called by TclNRExecuteByteCode when debugging to * verify that the program counter and stack top are valid during * execution. * * Results: * None. * * Side effects: * Prints a message to stderr and panics if either the pc or stack top * are invalid. * *---------------------------------------------------------------------- */ #ifdef TCL_COMPILE_DEBUG static void ValidatePcAndStackTop( register ByteCode *codePtr, /* The bytecode whose summary is printed to * stdout. */ const unsigned char *pc, /* Points to first byte of a bytecode * instruction. The program counter. */ int stackTop, /* Current stack top. Must be between * stackLowerBound and stackUpperBound * (inclusive). */ int checkStack) /* 0 if the stack depth check should be * skipped. */ { int stackUpperBound = codePtr->maxStackDepth; /* Greatest legal value for stackTop. */ unsigned relativePc = (unsigned) (pc - codePtr->codeStart); unsigned long codeStart = (unsigned long) codePtr->codeStart; unsigned long codeEnd = (unsigned long) (codePtr->codeStart + codePtr->numCodeBytes); unsigned char opCode = *pc; if (((unsigned long) pc < codeStart) || ((unsigned long) pc > codeEnd)) { fprintf(stderr, "\nBad instruction pc 0x%p in TclNRExecuteByteCode\n", pc); Tcl_Panic("TclNRExecuteByteCode execution failure: bad pc"); } if ((unsigned) opCode > LAST_INST_OPCODE) { fprintf(stderr, "\nBad opcode %d at pc %u in TclNRExecuteByteCode\n", (unsigned) opCode, relativePc); Tcl_Panic("TclNRExecuteByteCode execution failure: bad opcode"); } if (checkStack && ((stackTop < 0) || (stackTop > stackUpperBound))) { int numChars; const char *cmd = GetSrcInfoForPc(pc, codePtr, &numChars, NULL, NULL); fprintf(stderr, "\nBad stack top %d at pc %u in TclNRExecuteByteCode (min 0, max %i)", stackTop, relativePc, stackUpperBound); if (cmd != NULL) { Tcl_Obj *message; TclNewLiteralStringObj(message, "\n executing "); Tcl_IncrRefCount(message); Tcl_AppendLimitedToObj(message, cmd, numChars, 100, NULL); fprintf(stderr,"%s\n", TclGetString(message)); Tcl_DecrRefCount(message); } else { fprintf(stderr, "\n"); } Tcl_Panic("TclNRExecuteByteCode execution failure: bad stack top"); } } #endif /* TCL_COMPILE_DEBUG */ /* *---------------------------------------------------------------------- * * IllegalExprOperandType -- * * Used by TclNRExecuteByteCode to append an error message to the interp * result when an illegal operand type is detected by an expression * instruction. The argument opndPtr holds the operand object in error. * * Results: * None. * * Side effects: * An error message is appended to the interp result. * *---------------------------------------------------------------------- */ static void IllegalExprOperandType( Tcl_Interp *interp, /* Interpreter to which error information * pertains. */ const unsigned char *pc, /* Points to the instruction being executed * when the illegal type was found. */ Tcl_Obj *opndPtr) /* Points to the operand holding the value * with the illegal type. */ { ClientData ptr; int type; const unsigned char opcode = *pc; const char *description, *operator = "unknown"; if (opcode == INST_EXPON) { operator = "**"; } else if (opcode <= INST_LNOT) { operator = operatorStrings[opcode - INST_LOR]; } if (GetNumberFromObj(NULL, opndPtr, &ptr, &type) != TCL_OK) { int numBytes; const char *bytes = TclGetStringFromObj(opndPtr, &numBytes); if (numBytes == 0) { description = "empty string"; } else if (TclCheckBadOctal(NULL, bytes)) { description = "invalid octal number"; } else { description = "non-numeric string"; } } else if (type == TCL_NUMBER_NAN) { description = "non-numeric floating-point value"; } else if (type == TCL_NUMBER_DOUBLE) { description = "floating-point value"; } else { /* TODO: No caller needs this. Eliminate? */ description = "(big) integer"; } Tcl_SetObjResult(interp, Tcl_ObjPrintf( "can't use %s as operand of \"%s\"", description, operator)); Tcl_SetErrorCode(interp, "ARITH", "DOMAIN", description, NULL); } /* *---------------------------------------------------------------------- * * TclGetSrcInfoForPc, GetSrcInfoForPc, TclGetSourceFromFrame -- * * Given a program counter value, finds the closest command in the * bytecode code unit's CmdLocation array and returns information about * that command's source: a pointer to its first byte and the number of * characters. * * Results: * If a command is found that encloses the program counter value, a * pointer to the command's source is returned and the length of the * source is stored at *lengthPtr. If multiple commands resulted in code * at pc, information about the closest enclosing command is returned. If * no matching command is found, NULL is returned and *lengthPtr is * unchanged. * * Side effects: * The CmdFrame at *cfPtr is updated. * *---------------------------------------------------------------------- */ Tcl_Obj * TclGetSourceFromFrame( CmdFrame *cfPtr, int objc, Tcl_Obj *const objv[]) { if (cfPtr == NULL) { return Tcl_NewListObj(objc, objv); } if (cfPtr->cmdObj == NULL) { if (cfPtr->cmd == NULL) { ByteCode *codePtr = (ByteCode *) cfPtr->data.tebc.codePtr; cfPtr->cmd = GetSrcInfoForPc((unsigned char *) cfPtr->data.tebc.pc, codePtr, &cfPtr->len, NULL, NULL); } if (cfPtr->cmd) { cfPtr->cmdObj = Tcl_NewStringObj(cfPtr->cmd, cfPtr->len); } else { cfPtr->cmdObj = Tcl_NewListObj(objc, objv); } Tcl_IncrRefCount(cfPtr->cmdObj); } return cfPtr->cmdObj; } void TclGetSrcInfoForPc( CmdFrame *cfPtr) { ByteCode *codePtr = (ByteCode *) cfPtr->data.tebc.codePtr; assert(cfPtr->type == TCL_LOCATION_BC); if (cfPtr->cmd == NULL) { cfPtr->cmd = GetSrcInfoForPc( (unsigned char *) cfPtr->data.tebc.pc, codePtr, &cfPtr->len, NULL, NULL); } if (cfPtr->cmd != NULL) { /* * We now have the command. We can get the srcOffset back and from * there find the list of word locations for this command. */ ExtCmdLoc *eclPtr; ECL *locPtr = NULL; int srcOffset, i; Interp *iPtr = (Interp *) *codePtr->interpHandle; Tcl_HashEntry *hePtr = Tcl_FindHashEntry(iPtr->lineBCPtr, codePtr); if (!hePtr) { return; } srcOffset = cfPtr->cmd - codePtr->source; eclPtr = Tcl_GetHashValue(hePtr); for (i=0; i < eclPtr->nuloc; i++) { if (eclPtr->loc[i].srcOffset == srcOffset) { locPtr = eclPtr->loc+i; break; } } if (locPtr == NULL) { Tcl_Panic("LocSearch failure"); } cfPtr->line = locPtr->line; cfPtr->nline = locPtr->nline; cfPtr->type = eclPtr->type; if (eclPtr->type == TCL_LOCATION_SOURCE) { cfPtr->data.eval.path = eclPtr->path; Tcl_IncrRefCount(cfPtr->data.eval.path); } /* * Do not set cfPtr->data.eval.path NULL for non-SOURCE. Needed for * cfPtr->data.tebc.codePtr. */ } } static const char * GetSrcInfoForPc( const unsigned char *pc, /* The program counter value for which to * return the closest command's source info. * This points within a bytecode instruction * in codePtr's code. */ ByteCode *codePtr, /* The bytecode sequence in which to look up * the command source for the pc. */ int *lengthPtr, /* If non-NULL, the location where the length * of the command's source should be stored. * If NULL, no length is stored. */ const unsigned char **pcBeg,/* If non-NULL, the bytecode location * where the current instruction starts. * If NULL; no pointer is stored. */ int *cmdIdxPtr) /* If non-NULL, the location where the index * of the command containing the pc should * be stored. */ { register int pcOffset = (pc - codePtr->codeStart); int numCmds = codePtr->numCommands; unsigned char *codeDeltaNext, *codeLengthNext; unsigned char *srcDeltaNext, *srcLengthNext; int codeOffset, codeLen, codeEnd, srcOffset, srcLen, delta, i; int bestDist = INT_MAX; /* Distance of pc to best cmd's start pc. */ int bestSrcOffset = -1; /* Initialized to avoid compiler warning. */ int bestSrcLength = -1; /* Initialized to avoid compiler warning. */ int bestCmdIdx = -1; /* The pc must point within the bytecode */ assert ((pcOffset >= 0) && (pcOffset < codePtr->numCodeBytes)); /* * Decode the code and source offset and length for each command. The * closest enclosing command is the last one whose code started before * pcOffset. */ codeDeltaNext = codePtr->codeDeltaStart; codeLengthNext = codePtr->codeLengthStart; srcDeltaNext = codePtr->srcDeltaStart; srcLengthNext = codePtr->srcLengthStart; codeOffset = srcOffset = 0; for (i = 0; i < numCmds; i++) { if ((unsigned) *codeDeltaNext == (unsigned) 0xFF) { codeDeltaNext++; delta = TclGetInt4AtPtr(codeDeltaNext); codeDeltaNext += 4; } else { delta = TclGetInt1AtPtr(codeDeltaNext); codeDeltaNext++; } codeOffset += delta; if ((unsigned) *codeLengthNext == (unsigned) 0xFF) { codeLengthNext++; codeLen = TclGetInt4AtPtr(codeLengthNext); codeLengthNext += 4; } else { codeLen = TclGetInt1AtPtr(codeLengthNext); codeLengthNext++; } codeEnd = (codeOffset + codeLen - 1); if ((unsigned) *srcDeltaNext == (unsigned) 0xFF) { srcDeltaNext++; delta = TclGetInt4AtPtr(srcDeltaNext); srcDeltaNext += 4; } else { delta = TclGetInt1AtPtr(srcDeltaNext); srcDeltaNext++; } srcOffset += delta; if ((unsigned) *srcLengthNext == (unsigned) 0xFF) { srcLengthNext++; srcLen = TclGetInt4AtPtr(srcLengthNext); srcLengthNext += 4; } else { srcLen = TclGetInt1AtPtr(srcLengthNext); srcLengthNext++; } if (codeOffset > pcOffset) { /* Best cmd already found */ break; } if (pcOffset <= codeEnd) { /* This cmd's code encloses pc */ int dist = (pcOffset - codeOffset); if (dist <= bestDist) { bestDist = dist; bestSrcOffset = srcOffset; bestSrcLength = srcLen; bestCmdIdx = i; } } } if (pcBeg != NULL) { const unsigned char *curr, *prev; /* * Walk from beginning of command or BC to pc, by complete * instructions. Stop when crossing pc; keep previous. */ curr = ((bestDist == INT_MAX) ? codePtr->codeStart : pc - bestDist); prev = curr; while (curr <= pc) { prev = curr; curr += tclInstructionTable[*curr].numBytes; } *pcBeg = prev; } if (bestDist == INT_MAX) { return NULL; } if (lengthPtr != NULL) { *lengthPtr = bestSrcLength; } if (cmdIdxPtr != NULL) { *cmdIdxPtr = bestCmdIdx; } return (codePtr->source + bestSrcOffset); } /* *---------------------------------------------------------------------- * * GetExceptRangeForPc -- * * Given a program counter value, return the closest enclosing * ExceptionRange. * * Results: * If the searchMode is TCL_ERROR, this procedure ignores loop exception * ranges and returns a pointer to the closest catch range. If the * searchMode is TCL_BREAK, this procedure returns a pointer to the most * closely enclosing ExceptionRange regardless of whether it is a loop or * catch exception range. If the searchMode is TCL_CONTINUE, this * procedure returns a pointer to the most closely enclosing * ExceptionRange (of any type) skipping only loop exception ranges if * they don't have a sensible continueOffset defined. If no matching * ExceptionRange is found that encloses pc, a NULL is returned. * * Side effects: * None. * *---------------------------------------------------------------------- */ static ExceptionRange * GetExceptRangeForPc( const unsigned char *pc, /* The program counter value for which to * search for a closest enclosing exception * range. This points to a bytecode * instruction in codePtr's code. */ int searchMode, /* If TCL_BREAK, consider either loop or catch * ExceptionRanges in search. If TCL_ERROR * consider only catch ranges (and ignore any * closer loop ranges). If TCL_CONTINUE, look * for loop ranges that define a continue * point or a catch range. */ ByteCode *codePtr) /* Points to the ByteCode in which to search * for the enclosing ExceptionRange. */ { ExceptionRange *rangeArrayPtr; int numRanges = codePtr->numExceptRanges; register ExceptionRange *rangePtr; int pcOffset = pc - codePtr->codeStart; register int start; if (numRanges == 0) { return NULL; } /* * This exploits peculiarities of our compiler: nested ranges are always * *after* their containing ranges, so that by scanning backwards we are * sure that the first matching range is indeed the deepest. */ rangeArrayPtr = codePtr->exceptArrayPtr; rangePtr = rangeArrayPtr + numRanges; while (--rangePtr >= rangeArrayPtr) { start = rangePtr->codeOffset; if ((start <= pcOffset) && (pcOffset < (start + rangePtr->numCodeBytes))) { if (rangePtr->type == CATCH_EXCEPTION_RANGE) { return rangePtr; } if (searchMode == TCL_BREAK) { return rangePtr; } if (searchMode == TCL_CONTINUE && rangePtr->continueOffset != -1){ return rangePtr; } } } return NULL; } /* *---------------------------------------------------------------------- * * GetOpcodeName -- * * This procedure is called by the TRACE and TRACE_WITH_OBJ macros used * in TclNRExecuteByteCode when debugging. It returns the name of the * bytecode instruction at a specified instruction pc. * * Results: * A character string for the instruction. * * Side effects: * None. * *---------------------------------------------------------------------- */ #ifdef TCL_COMPILE_DEBUG static const char * GetOpcodeName( const unsigned char *pc) /* Points to the instruction whose name should * be returned. */ { unsigned char opCode = *pc; return tclInstructionTable[opCode].name; } #endif /* TCL_COMPILE_DEBUG */ /* *---------------------------------------------------------------------- * * TclExprFloatError -- * * This procedure is called when an error occurs during a floating-point * operation. It reads errno and sets interp->objResultPtr accordingly. * * Results: * interp->objResultPtr is set to hold an error message. * * Side effects: * None. * *---------------------------------------------------------------------- */ void TclExprFloatError( Tcl_Interp *interp, /* Where to store error message. */ double value) /* Value returned after error; used to * distinguish underflows from overflows. */ { const char *s; if ((errno == EDOM) || TclIsNaN(value)) { s = "domain error: argument not in valid range"; Tcl_SetObjResult(interp, Tcl_NewStringObj(s, -1)); Tcl_SetErrorCode(interp, "ARITH", "DOMAIN", s, NULL); } else if ((errno == ERANGE) || TclIsInfinite(value)) { if (value == 0.0) { s = "floating-point value too small to represent"; Tcl_SetObjResult(interp, Tcl_NewStringObj(s, -1)); Tcl_SetErrorCode(interp, "ARITH", "UNDERFLOW", s, NULL); } else { s = "floating-point value too large to represent"; Tcl_SetObjResult(interp, Tcl_NewStringObj(s, -1)); Tcl_SetErrorCode(interp, "ARITH", "OVERFLOW", s, NULL); } } else { Tcl_Obj *objPtr = Tcl_ObjPrintf( "unknown floating-point error, errno = %d", errno); Tcl_SetErrorCode(interp, "ARITH", "UNKNOWN", TclGetString(objPtr), NULL); Tcl_SetObjResult(interp, objPtr); } } #ifdef TCL_COMPILE_STATS /* *---------------------------------------------------------------------- * * TclLog2 -- * * Procedure used while collecting compilation statistics to determine * the log base 2 of an integer. * * Results: * Returns the log base 2 of the operand. If the argument is less than or * equal to zero, a zero is returned. * * Side effects: * None. * *---------------------------------------------------------------------- */ int TclLog2( register int value) /* The integer for which to compute the log * base 2. */ { register int n = value; register int result = 0; while (n > 1) { n = n >> 1; result++; } return result; } /* *---------------------------------------------------------------------- * * EvalStatsCmd -- * * Implements the "evalstats" command that prints instruction execution * counts to stdout. * * Results: * Standard Tcl results. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int EvalStatsCmd( ClientData unused, /* Unused. */ Tcl_Interp *interp, /* The current interpreter. */ int objc, /* The number of arguments. */ Tcl_Obj *const objv[]) /* The argument strings. */ { Interp *iPtr = (Interp *) interp; LiteralTable *globalTablePtr = &iPtr->literalTable; ByteCodeStats *statsPtr = &iPtr->stats; double totalCodeBytes, currentCodeBytes; double totalLiteralBytes, currentLiteralBytes; double objBytesIfUnshared, strBytesIfUnshared, sharingBytesSaved; double strBytesSharedMultX, strBytesSharedOnce; double numInstructions, currentHeaderBytes; long numCurrentByteCodes, numByteCodeLits; long refCountSum, literalMgmtBytes, sum; int numSharedMultX, numSharedOnce; int decadeHigh, minSizeDecade, maxSizeDecade, length, i; char *litTableStats; LiteralEntry *entryPtr; Tcl_Obj *objPtr; #define Percent(a,b) ((a) * 100.0 / (b)) objPtr = Tcl_NewObj(); Tcl_IncrRefCount(objPtr); numInstructions = 0.0; for (i = 0; i < 256; i++) { if (statsPtr->instructionCount[i] != 0) { numInstructions += statsPtr->instructionCount[i]; } } totalLiteralBytes = sizeof(LiteralTable) + iPtr->literalTable.numBuckets * sizeof(LiteralEntry *) + (statsPtr->numLiteralsCreated * sizeof(LiteralEntry)) + (statsPtr->numLiteralsCreated * sizeof(Tcl_Obj)) + statsPtr->totalLitStringBytes; totalCodeBytes = statsPtr->totalByteCodeBytes + totalLiteralBytes; numCurrentByteCodes = statsPtr->numCompilations - statsPtr->numByteCodesFreed; currentHeaderBytes = numCurrentByteCodes * (sizeof(ByteCode) - sizeof(size_t) - sizeof(Tcl_Time)); literalMgmtBytes = sizeof(LiteralTable) + (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)) + (iPtr->literalTable.numEntries * sizeof(LiteralEntry)); currentLiteralBytes = literalMgmtBytes + iPtr->literalTable.numEntries * sizeof(Tcl_Obj) + statsPtr->currentLitStringBytes; currentCodeBytes = statsPtr->currentByteCodeBytes + currentLiteralBytes; /* * Summary statistics, total and current source and ByteCode sizes. */ Tcl_AppendPrintfToObj(objPtr, "\n----------------------------------------------------------------\n"); Tcl_AppendPrintfToObj(objPtr, "Compilation and execution statistics for interpreter %#lx\n", (long int)iPtr); Tcl_AppendPrintfToObj(objPtr, "\nNumber ByteCodes executed\t%ld\n", statsPtr->numExecutions); Tcl_AppendPrintfToObj(objPtr, "Number ByteCodes compiled\t%ld\n", statsPtr->numCompilations); Tcl_AppendPrintfToObj(objPtr, " Mean executions/compile\t%.1f\n", statsPtr->numExecutions / (float)statsPtr->numCompilations); Tcl_AppendPrintfToObj(objPtr, "\nInstructions executed\t\t%.0f\n", numInstructions); Tcl_AppendPrintfToObj(objPtr, " Mean inst/compile\t\t%.0f\n", numInstructions / statsPtr->numCompilations); Tcl_AppendPrintfToObj(objPtr, " Mean inst/execution\t\t%.0f\n", numInstructions / statsPtr->numExecutions); Tcl_AppendPrintfToObj(objPtr, "\nTotal ByteCodes\t\t\t%ld\n", statsPtr->numCompilations); Tcl_AppendPrintfToObj(objPtr, " Source bytes\t\t\t%.6g\n", statsPtr->totalSrcBytes); Tcl_AppendPrintfToObj(objPtr, " Code bytes\t\t\t%.6g\n", totalCodeBytes); Tcl_AppendPrintfToObj(objPtr, " ByteCode bytes\t\t%.6g\n", statsPtr->totalByteCodeBytes); Tcl_AppendPrintfToObj(objPtr, " Literal bytes\t\t%.6g\n", totalLiteralBytes); Tcl_AppendPrintfToObj(objPtr, " table %lu + bkts %lu + entries %lu + objects %lu + strings %.6g\n", (unsigned long) sizeof(LiteralTable), (unsigned long) (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)), (unsigned long) (statsPtr->numLiteralsCreated * sizeof(LiteralEntry)), (unsigned long) (statsPtr->numLiteralsCreated * sizeof(Tcl_Obj)), statsPtr->totalLitStringBytes); Tcl_AppendPrintfToObj(objPtr, " Mean code/compile\t\t%.1f\n", totalCodeBytes / statsPtr->numCompilations); Tcl_AppendPrintfToObj(objPtr, " Mean code/source\t\t%.1f\n", totalCodeBytes / statsPtr->totalSrcBytes); Tcl_AppendPrintfToObj(objPtr, "\nCurrent (active) ByteCodes\t%ld\n", numCurrentByteCodes); Tcl_AppendPrintfToObj(objPtr, " Source bytes\t\t\t%.6g\n", statsPtr->currentSrcBytes); Tcl_AppendPrintfToObj(objPtr, " Code bytes\t\t\t%.6g\n", currentCodeBytes); Tcl_AppendPrintfToObj(objPtr, " ByteCode bytes\t\t%.6g\n", statsPtr->currentByteCodeBytes); Tcl_AppendPrintfToObj(objPtr, " Literal bytes\t\t%.6g\n", currentLiteralBytes); Tcl_AppendPrintfToObj(objPtr, " table %lu + bkts %lu + entries %lu + objects %lu + strings %.6g\n", (unsigned long) sizeof(LiteralTable), (unsigned long) (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)), (unsigned long) (iPtr->literalTable.numEntries * sizeof(LiteralEntry)), (unsigned long) (iPtr->literalTable.numEntries * sizeof(Tcl_Obj)), statsPtr->currentLitStringBytes); Tcl_AppendPrintfToObj(objPtr, " Mean code/source\t\t%.1f\n", currentCodeBytes / statsPtr->currentSrcBytes); Tcl_AppendPrintfToObj(objPtr, " Code + source bytes\t\t%.6g (%0.1f mean code/src)\n", (currentCodeBytes + statsPtr->currentSrcBytes), (currentCodeBytes / statsPtr->currentSrcBytes) + 1.0); /* * Tcl_IsShared statistics check * * This gives the refcount of each obj as Tcl_IsShared was called for it. * Shared objects must be duplicated before they can be modified. */ numSharedMultX = 0; Tcl_AppendPrintfToObj(objPtr, "\nTcl_IsShared object check (all objects):\n"); Tcl_AppendPrintfToObj(objPtr, " Object had refcount <=1 (not shared)\t%ld\n", tclObjsShared[1]); for (i = 2; i < TCL_MAX_SHARED_OBJ_STATS; i++) { Tcl_AppendPrintfToObj(objPtr, " refcount ==%d\t\t%ld\n", i, tclObjsShared[i]); numSharedMultX += tclObjsShared[i]; } Tcl_AppendPrintfToObj(objPtr, " refcount >=%d\t\t%ld\n", i, tclObjsShared[0]); numSharedMultX += tclObjsShared[0]; Tcl_AppendPrintfToObj(objPtr, " Total shared objects\t\t\t%d\n", numSharedMultX); /* * Literal table statistics. */ numByteCodeLits = 0; refCountSum = 0; numSharedMultX = 0; numSharedOnce = 0; objBytesIfUnshared = 0.0; strBytesIfUnshared = 0.0; strBytesSharedMultX = 0.0; strBytesSharedOnce = 0.0; for (i = 0; i < globalTablePtr->numBuckets; i++) { for (entryPtr = globalTablePtr->buckets[i]; entryPtr != NULL; entryPtr = entryPtr->nextPtr) { if (entryPtr->objPtr->typePtr == &tclByteCodeType) { numByteCodeLits++; } (void) TclGetStringFromObj(entryPtr->objPtr, &length); refCountSum += entryPtr->refCount; objBytesIfUnshared += (entryPtr->refCount * sizeof(Tcl_Obj)); strBytesIfUnshared += (entryPtr->refCount * (length+1)); if (entryPtr->refCount > 1) { numSharedMultX++; strBytesSharedMultX += (length+1); } else { numSharedOnce++; strBytesSharedOnce += (length+1); } } } sharingBytesSaved = (objBytesIfUnshared + strBytesIfUnshared) - currentLiteralBytes; Tcl_AppendPrintfToObj(objPtr, "\nTotal objects (all interps)\t%ld\n", tclObjsAlloced); Tcl_AppendPrintfToObj(objPtr, "Current objects\t\t\t%ld\n", (tclObjsAlloced - tclObjsFreed)); Tcl_AppendPrintfToObj(objPtr, "Total literal objects\t\t%ld\n", statsPtr->numLiteralsCreated); Tcl_AppendPrintfToObj(objPtr, "\nCurrent literal objects\t\t%d (%0.1f%% of current objects)\n", globalTablePtr->numEntries, Percent(globalTablePtr->numEntries, tclObjsAlloced-tclObjsFreed)); Tcl_AppendPrintfToObj(objPtr, " ByteCode literals\t\t%ld (%0.1f%% of current literals)\n", numByteCodeLits, Percent(numByteCodeLits, globalTablePtr->numEntries)); Tcl_AppendPrintfToObj(objPtr, " Literals reused > 1x\t\t%d\n", numSharedMultX); Tcl_AppendPrintfToObj(objPtr, " Mean reference count\t\t%.2f\n", ((double) refCountSum) / globalTablePtr->numEntries); Tcl_AppendPrintfToObj(objPtr, " Mean len, str reused >1x \t%.2f\n", (numSharedMultX ? strBytesSharedMultX/numSharedMultX : 0.0)); Tcl_AppendPrintfToObj(objPtr, " Mean len, str used 1x\t\t%.2f\n", (numSharedOnce ? strBytesSharedOnce/numSharedOnce : 0.0)); Tcl_AppendPrintfToObj(objPtr, " Total sharing savings\t\t%.6g (%0.1f%% of bytes if no sharing)\n", sharingBytesSaved, Percent(sharingBytesSaved, objBytesIfUnshared+strBytesIfUnshared)); Tcl_AppendPrintfToObj(objPtr, " Bytes with sharing\t\t%.6g\n", currentLiteralBytes); Tcl_AppendPrintfToObj(objPtr, " table %lu + bkts %lu + entries %lu + objects %lu + strings %.6g\n", (unsigned long) sizeof(LiteralTable), (unsigned long) (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)), (unsigned long) (iPtr->literalTable.numEntries * sizeof(LiteralEntry)), (unsigned long) (iPtr->literalTable.numEntries * sizeof(Tcl_Obj)), statsPtr->currentLitStringBytes); Tcl_AppendPrintfToObj(objPtr, " Bytes if no sharing\t\t%.6g = objects %.6g + strings %.6g\n", (objBytesIfUnshared + strBytesIfUnshared), objBytesIfUnshared, strBytesIfUnshared); Tcl_AppendPrintfToObj(objPtr, " String sharing savings \t%.6g = unshared %.6g - shared %.6g\n", (strBytesIfUnshared - statsPtr->currentLitStringBytes), strBytesIfUnshared, statsPtr->currentLitStringBytes); Tcl_AppendPrintfToObj(objPtr, " Literal mgmt overhead\t\t%ld (%0.1f%% of bytes with sharing)\n", literalMgmtBytes, Percent(literalMgmtBytes, currentLiteralBytes)); Tcl_AppendPrintfToObj(objPtr, " table %lu + buckets %lu + entries %lu\n", (unsigned long) sizeof(LiteralTable), (unsigned long) (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)), (unsigned long) (iPtr->literalTable.numEntries * sizeof(LiteralEntry))); /* * Breakdown of current ByteCode space requirements. */ Tcl_AppendPrintfToObj(objPtr, "\nBreakdown of current ByteCode requirements:\n"); Tcl_AppendPrintfToObj(objPtr, " Bytes Pct of Avg per\n"); Tcl_AppendPrintfToObj(objPtr, " total ByteCode\n"); Tcl_AppendPrintfToObj(objPtr, "Total %12.6g 100.00%% %8.1f\n", statsPtr->currentByteCodeBytes, statsPtr->currentByteCodeBytes / numCurrentByteCodes); Tcl_AppendPrintfToObj(objPtr, "Header %12.6g %8.1f%% %8.1f\n", currentHeaderBytes, Percent(currentHeaderBytes, statsPtr->currentByteCodeBytes), currentHeaderBytes / numCurrentByteCodes); Tcl_AppendPrintfToObj(objPtr, "Instructions %12.6g %8.1f%% %8.1f\n", statsPtr->currentInstBytes, Percent(statsPtr->currentInstBytes,statsPtr->currentByteCodeBytes), statsPtr->currentInstBytes / numCurrentByteCodes); Tcl_AppendPrintfToObj(objPtr, "Literal ptr array %12.6g %8.1f%% %8.1f\n", statsPtr->currentLitBytes, Percent(statsPtr->currentLitBytes,statsPtr->currentByteCodeBytes), statsPtr->currentLitBytes / numCurrentByteCodes); Tcl_AppendPrintfToObj(objPtr, "Exception table %12.6g %8.1f%% %8.1f\n", statsPtr->currentExceptBytes, Percent(statsPtr->currentExceptBytes,statsPtr->currentByteCodeBytes), statsPtr->currentExceptBytes / numCurrentByteCodes); Tcl_AppendPrintfToObj(objPtr, "Auxiliary data %12.6g %8.1f%% %8.1f\n", statsPtr->currentAuxBytes, Percent(statsPtr->currentAuxBytes,statsPtr->currentByteCodeBytes), statsPtr->currentAuxBytes / numCurrentByteCodes); Tcl_AppendPrintfToObj(objPtr, "Command map %12.6g %8.1f%% %8.1f\n", statsPtr->currentCmdMapBytes, Percent(statsPtr->currentCmdMapBytes,statsPtr->currentByteCodeBytes), statsPtr->currentCmdMapBytes / numCurrentByteCodes); /* * Detailed literal statistics. */ Tcl_AppendPrintfToObj(objPtr, "\nLiteral string sizes:\n"); Tcl_AppendPrintfToObj(objPtr, "\t Up to length\t\tPercentage\n"); maxSizeDecade = 0; for (i = 31; i >= 0; i--) { if (statsPtr->literalCount[i] > 0) { maxSizeDecade = i; break; } } sum = 0; for (i = 0; i <= maxSizeDecade; i++) { decadeHigh = (1 << (i+1)) - 1; sum += statsPtr->literalCount[i]; Tcl_AppendPrintfToObj(objPtr, "\t%10d\t\t%8.0f%%\n", decadeHigh, Percent(sum, statsPtr->numLiteralsCreated)); } litTableStats = TclLiteralStats(globalTablePtr); Tcl_AppendPrintfToObj(objPtr, "\nCurrent literal table statistics:\n%s\n", litTableStats); ckfree(litTableStats); /* * Source and ByteCode size distributions. */ Tcl_AppendPrintfToObj(objPtr, "\nSource sizes:\n"); Tcl_AppendPrintfToObj(objPtr, "\t Up to size\t\tPercentage\n"); minSizeDecade = maxSizeDecade = 0; for (i = 0; i < 31; i++) { if (statsPtr->srcCount[i] > 0) { minSizeDecade = i; break; } } for (i = 31; i >= 0; i--) { if (statsPtr->srcCount[i] > 0) { maxSizeDecade = i; break; } } sum = 0; for (i = minSizeDecade; i <= maxSizeDecade; i++) { decadeHigh = (1 << (i+1)) - 1; sum += statsPtr->srcCount[i]; Tcl_AppendPrintfToObj(objPtr, "\t%10d\t\t%8.0f%%\n", decadeHigh, Percent(sum, statsPtr->numCompilations)); } Tcl_AppendPrintfToObj(objPtr, "\nByteCode sizes:\n"); Tcl_AppendPrintfToObj(objPtr, "\t Up to size\t\tPercentage\n"); minSizeDecade = maxSizeDecade = 0; for (i = 0; i < 31; i++) { if (statsPtr->byteCodeCount[i] > 0) { minSizeDecade = i; break; } } for (i = 31; i >= 0; i--) { if (statsPtr->byteCodeCount[i] > 0) { maxSizeDecade = i; break; } } sum = 0; for (i = minSizeDecade; i <= maxSizeDecade; i++) { decadeHigh = (1 << (i+1)) - 1; sum += statsPtr->byteCodeCount[i]; Tcl_AppendPrintfToObj(objPtr, "\t%10d\t\t%8.0f%%\n", decadeHigh, Percent(sum, statsPtr->numCompilations)); } Tcl_AppendPrintfToObj(objPtr, "\nByteCode longevity (excludes Current ByteCodes):\n"); Tcl_AppendPrintfToObj(objPtr, "\t Up to ms\t\tPercentage\n"); minSizeDecade = maxSizeDecade = 0; for (i = 0; i < 31; i++) { if (statsPtr->lifetimeCount[i] > 0) { minSizeDecade = i; break; } } for (i = 31; i >= 0; i--) { if (statsPtr->lifetimeCount[i] > 0) { maxSizeDecade = i; break; } } sum = 0; for (i = minSizeDecade; i <= maxSizeDecade; i++) { decadeHigh = (1 << (i+1)) - 1; sum += statsPtr->lifetimeCount[i]; Tcl_AppendPrintfToObj(objPtr, "\t%12.3f\t\t%8.0f%%\n", decadeHigh/1000.0, Percent(sum, statsPtr->numByteCodesFreed)); } /* * Instruction counts. */ Tcl_AppendPrintfToObj(objPtr, "\nInstruction counts:\n"); for (i = 0; i <= LAST_INST_OPCODE; i++) { Tcl_AppendPrintfToObj(objPtr, "%20s %8ld ", tclInstructionTable[i].name, statsPtr->instructionCount[i]); if (statsPtr->instructionCount[i]) { Tcl_AppendPrintfToObj(objPtr, "%6.1f%%\n", Percent(statsPtr->instructionCount[i], numInstructions)); } else { Tcl_AppendPrintfToObj(objPtr, "0\n"); } } #ifdef TCL_MEM_DEBUG Tcl_AppendPrintfToObj(objPtr, "\nHeap Statistics:\n"); TclDumpMemoryInfo((ClientData) objPtr, 1); #endif Tcl_AppendPrintfToObj(objPtr, "\n----------------------------------------------------------------\n"); if (objc == 1) { Tcl_SetObjResult(interp, objPtr); } else { Tcl_Channel outChan; char *str = TclGetStringFromObj(objv[1], &length); if (length) { if (strcmp(str, "stdout") == 0) { outChan = Tcl_GetStdChannel(TCL_STDOUT); } else if (strcmp(str, "stderr") == 0) { outChan = Tcl_GetStdChannel(TCL_STDERR); } else { outChan = Tcl_OpenFileChannel(NULL, str, "w", 0664); } } else { outChan = Tcl_GetStdChannel(TCL_STDOUT); } if (outChan != NULL) { Tcl_WriteObj(outChan, objPtr); } } Tcl_DecrRefCount(objPtr); return TCL_OK; } #endif /* TCL_COMPILE_STATS */ #ifdef TCL_COMPILE_DEBUG /* *---------------------------------------------------------------------- * * StringForResultCode -- * * Procedure that returns a human-readable string representing a Tcl * result code such as TCL_ERROR. * * Results: * If the result code is one of the standard Tcl return codes, the result * is a string representing that code such as "TCL_ERROR". Otherwise, the * result string is that code formatted as a sequence of decimal digit * characters. Note that the resulting string must not be modified by the * caller. * * Side effects: * None. * *---------------------------------------------------------------------- */ static const char * StringForResultCode( int result) /* The Tcl result code for which to generate a * string. */ { static char buf[TCL_INTEGER_SPACE]; if ((result >= TCL_OK) && (result <= TCL_CONTINUE)) { return resultStrings[result]; } TclFormatInt(buf, result); return buf; } #endif /* TCL_COMPILE_DEBUG */ /* * Local Variables: * mode: c * c-basic-offset: 4 * fill-column: 78 * End: */