diff options
Diffstat (limited to 'tcl8.6/generic/tclExecute.c')
| -rw-r--r-- | tcl8.6/generic/tclExecute.c | 10754 |
1 files changed, 0 insertions, 10754 deletions
diff --git a/tcl8.6/generic/tclExecute.c b/tcl8.6/generic/tclExecute.c deleted file mode 100644 index e539161..0000000 --- a/tcl8.6/generic/tclExecute.c +++ /dev/null @@ -1,10754 +0,0 @@ -/* - * 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 <das@users.sourceforge.net> - * 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 "tclStringRep.h" -#include <math.h> -#include <assert.h> - -/* - * 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 mask (should be 2**n-1) that is used to work out when the bytecode engine - * should call Tcl_AsyncReady() to see whether there is a signal that needs - * handling. - */ - -#ifndef ASYNC_CHECK_COUNT_MASK -# define ASYNC_CHECK_COUNT_MASK 63 -#endif /* !ASYNC_CHECK_COUNT_MASK */ - -/* - * 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); - */ - -#ifdef TCL_WIDE_INT_IS_LONG -#define GetNumberFromObj(interp, objPtr, ptrPtr, tPtr) \ - (((objPtr)->typePtr == &tclIntType) \ - ? (*(tPtr) = TCL_NUMBER_LONG, \ - *(ptrPtr) = (ClientData) \ - (&((objPtr)->internalRep.longValue)), 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)->typePtr == NULL) && ((objPtr)->bytes == NULL)) || \ - (((objPtr)->bytes != NULL) && ((objPtr)->length == 0))) \ - ? (*(tPtr) = TCL_NUMBER_LONG),TCL_ERROR : \ - TclGetNumberFromObj((interp), (objPtr), (ptrPtr), (tPtr))) -#else /* !TCL_WIDE_INT_IS_LONG */ -#define GetNumberFromObj(interp, objPtr, ptrPtr, tPtr) \ - (((objPtr)->typePtr == &tclIntType) \ - ? (*(tPtr) = TCL_NUMBER_LONG, \ - *(ptrPtr) = (ClientData) \ - (&((objPtr)->internalRep.longValue)), TCL_OK) : \ - ((objPtr)->typePtr == &tclWideIntType) \ - ? (*(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)->typePtr == NULL) && ((objPtr)->bytes == NULL)) || \ - (((objPtr)->bytes != NULL) && ((objPtr)->length == 0))) \ - ? (*(tPtr) = TCL_NUMBER_LONG),TCL_ERROR : \ - TclGetNumberFromObj((interp), (objPtr), (ptrPtr), (tPtr))) -#endif /* TCL_WIDE_INT_IS_LONG */ - -/* - * Macro used in this file to save a function call for common uses of - * Tcl_GetBooleanFromObj(). The ANSI C "prototype" is: - * - * MODULE_SCOPE int TclGetBooleanFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr, - * int *boolPtr); - */ - -#define TclGetBooleanFromObj(interp, objPtr, boolPtr) \ - ((((objPtr)->typePtr == &tclIntType) \ - || ((objPtr)->typePtr == &tclBooleanType)) \ - ? (*(boolPtr) = ((objPtr)->internalRep.longValue!=0), TCL_OK) \ - : Tcl_GetBooleanFromObj((interp), (objPtr), (boolPtr))) - -/* - * 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. - */ - -#if (LONG_MAX == 0x7fffffff) - -/* - * Maximum base that, when raised to powers 2, 3, ... 8, fits in a 32-bit - * signed integer. - */ - -static const long MaxBase32[] = {46340, 1290, 215, 73, 35, 21, 14}; -static const size_t MaxBase32Size = sizeof(MaxBase32)/sizeof(long); - -/* - * Table giving 3, 4, ..., 11, raised to the powers 9, 10, ..., as far as they - * fit in a 32-bit signed integer. Exp32Index[i] gives the starting index of - * powers of i+3; Exp32Value[i] gives the corresponding powers. - */ - -static const unsigned short Exp32Index[] = { - 0, 11, 18, 23, 26, 29, 31, 32, 33 -}; -static const size_t Exp32IndexSize = - sizeof(Exp32Index) / sizeof(unsigned short); -static const long Exp32Value[] = { - 19683, 59049, 177147, 531441, 1594323, 4782969, 14348907, 43046721, - 129140163, 387420489, 1162261467, 262144, 1048576, 4194304, - 16777216, 67108864, 268435456, 1073741824, 1953125, 9765625, - 48828125, 244140625, 1220703125, 10077696, 60466176, 362797056, - 40353607, 282475249, 1977326743, 134217728, 1073741824, 387420489, - 1000000000 -}; -static const size_t Exp32ValueSize = sizeof(Exp32Value)/sizeof(long); -#endif /* LONG_MAX == 0x7fffffff -- 32 bit machine */ - -#if (LONG_MAX > 0x7fffffff) || !defined(TCL_WIDE_INT_IS_LONG) - -/* - * 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); -#endif /* (LONG_MAX > 0x7fffffff) || !defined(TCL_WIDE_INT_IS_LONG) */ - -/* - * 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); -MODULE_SCOPE int TclCompareTwoNumbers(Tcl_Obj *valuePtr, - Tcl_Obj *value2Ptr); -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; - TclNewBooleanObj(eePtr->constants[0], 0); - Tcl_IncrRefCount(eePtr->constants[0]); - TclNewBooleanObj(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((char *) 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 = (numBytes + (sizeof(Tcl_Obj *) - 1))/sizeof(Tcl_Obj *); - - if (iPtr == NULL || iPtr->execEnvPtr == NULL) { - return (void *) ckalloc(numBytes); - } - - 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. - * The caller must manage its refCount and arrange for a call to - * TclCleanupByteCode() when the last reference disappears. - * - * Side effects: - * The Tcl_ObjType of objPtr is changed to the "bytecode" 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)) { - FreeExprCodeInternalRep(objPtr); - } - } - if (objPtr->typePtr != &exprCodeType) { - /* - * TIP #280: No invoker (yet) - Expression compilation. - */ - - int length; - const char *string = TclGetStringFromObj(objPtr, &length); - - TclInitCompileEnv(interp, &compEnv, string, length, NULL, 0); - TclCompileExpr(interp, string, 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(TclRegisterNewLiteral(&compEnv, "0", 1), - &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); - TclInitByteCodeObj(objPtr, &compEnv); - objPtr->typePtr = &exprCodeType; - TclFreeCompileEnv(&compEnv); - codePtr = objPtr->internalRep.twoPtrValue.ptr1; - 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; - - objPtr->typePtr = NULL; - if (codePtr->refCount-- <= 1) { - TclCleanupByteCode(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_LONG) && (type2 == TCL_NUMBER_LONG)) { - long augend = *((const long *) ptr1); - long addend = *((const long *) ptr2); - long sum = augend + addend; - - /* - * Overflow when (augend and sum have different sign) and (augend and - * addend have the same sign). This is encapsulated in the Overflowing - * macro. - */ - - if (!Overflowing(augend, addend, sum)) { - TclSetLongObj(valuePtr, sum); - return TCL_OK; - } -#ifndef TCL_WIDE_INT_IS_LONG - { - Tcl_WideInt w1 = (Tcl_WideInt) augend; - Tcl_WideInt w2 = (Tcl_WideInt) addend; - - /* - * We know the sum value is outside the long range, so we use the - * macro form that doesn't range test again. - */ - - TclSetWideIntObj(valuePtr, w1 + w2); - return TCL_OK; - } -#endif - } - - 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; - } - -#ifndef TCL_WIDE_INT_IS_LONG - 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)) { - Tcl_SetWideIntObj(valuePtr, sum); - return TCL_OK; - } - } -#endif - - 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 *); - - codePtr->refCount++; - - /* - * 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. - */ - - int instructionCount = 0; /* Counter that is used to work out when to - * call Tcl_AsyncReady() */ - 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_MASK instruction, of the form (2**n-1). - */ - - if ((instructionCount++ & ASYNC_CHECK_COUNT_MASK) == 0) { - 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), - Tcl_GetString(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<b) { - tmpPtr = *a; - *a = *b; - *b = tmpPtr; - a++; b--; - } - TRACE(("%u => OK\n", opnd)); - NEXT_INST_F(5, 0, 0); - } - - case INST_STR_CONCAT1: { - int appendLen = 0; - char *bytes, *p; - Tcl_Obj **currPtr; - int onlyb = 1; - - opnd = TclGetUInt1AtPtr(pc+1); - - /* - * Detect only-bytearray-or-null case. - */ - - for (currPtr=&OBJ_AT_DEPTH(opnd-1); currPtr<=&OBJ_AT_TOS; currPtr++) { - if (((*currPtr)->typePtr != &tclByteArrayType) - && ((*currPtr)->bytes != tclEmptyStringRep)) { - onlyb = 0; - break; - } else if (((*currPtr)->typePtr == &tclByteArrayType) && - ((*currPtr)->bytes != NULL)) { - onlyb = 0; - break; - } - } - - /* - * Compute the length to be appended. - */ - - if (onlyb) { - for (currPtr = &OBJ_AT_DEPTH(opnd-2); - appendLen >= 0 && currPtr <= &OBJ_AT_TOS; currPtr++) { - if ((*currPtr)->bytes != tclEmptyStringRep) { - Tcl_GetByteArrayFromObj(*currPtr, &length); - appendLen += length; - } - } - } else { - for (currPtr = &OBJ_AT_DEPTH(opnd-2); - appendLen >= 0 && currPtr <= &OBJ_AT_TOS; currPtr++) { - bytes = TclGetStringFromObj(*currPtr, &length); - if (bytes != NULL) { - appendLen += length; - } - } - } - - if (appendLen < 0) { - /* TODO: convert panic to error ? */ - Tcl_Panic("max size for a Tcl value (%d bytes) exceeded", INT_MAX); - } - - /* - * If nothing is to be appended, just return the first object by - * dropping all the others from the stack; this saves both the - * computation and copy of the string rep of the first object, - * enabling the fast '$x[set x {}]' idiom for 'K $x [set x {}]'. - */ - - if (appendLen == 0) { - TRACE_WITH_OBJ(("%u => ", opnd), objResultPtr); - NEXT_INST_V(2, (opnd-1), 0); - } - - /* - * If the first object is shared, we need a new obj for the result; - * otherwise, we can reuse the first object. In any case, make sure it - * has enough room to accomodate all the concatenated bytes. Note that - * if it is unshared its bytes are copied by ckrealloc, so that we set - * the loop parameters to avoid copying them again: p points to the - * end of the already copied bytes, currPtr to the second object. - */ - - objResultPtr = OBJ_AT_DEPTH(opnd-1); - if (!onlyb) { - bytes = TclGetStringFromObj(objResultPtr, &length); - if (length + appendLen < 0) { - /* TODO: convert panic to error ? */ - Tcl_Panic("max size for a Tcl value (%d bytes) exceeded", - INT_MAX); - } -#ifndef TCL_COMPILE_DEBUG - if (bytes != tclEmptyStringRep && !Tcl_IsShared(objResultPtr)) { - TclFreeIntRep(objResultPtr); - objResultPtr->bytes = ckrealloc(bytes, length+appendLen+1); - objResultPtr->length = length + appendLen; - p = TclGetString(objResultPtr) + length; - currPtr = &OBJ_AT_DEPTH(opnd - 2); - } else -#endif - { - p = ckalloc(length + appendLen + 1); - TclNewObj(objResultPtr); - objResultPtr->bytes = p; - objResultPtr->length = length + appendLen; - currPtr = &OBJ_AT_DEPTH(opnd - 1); - } - - /* - * Append the remaining characters. - */ - - for (; currPtr <= &OBJ_AT_TOS; currPtr++) { - bytes = TclGetStringFromObj(*currPtr, &length); - if (bytes != NULL) { - memcpy(p, bytes, (size_t) length); - p += length; - } - } - *p = '\0'; - } else { - bytes = (char *) Tcl_GetByteArrayFromObj(objResultPtr, &length); - if (length + appendLen < 0) { - /* TODO: convert panic to error ? */ - Tcl_Panic("max size for a Tcl value (%d bytes) exceeded", - INT_MAX); - } -#ifndef TCL_COMPILE_DEBUG - if (!Tcl_IsShared(objResultPtr)) { - bytes = (char *) Tcl_SetByteArrayLength(objResultPtr, - length + appendLen); - p = bytes + length; - currPtr = &OBJ_AT_DEPTH(opnd - 2); - } else -#endif - { - TclNewObj(objResultPtr); - bytes = (char *) Tcl_SetByteArrayLength(objResultPtr, - length + appendLen); - p = bytes; - currPtr = &OBJ_AT_DEPTH(opnd - 1); - } - - /* - * Append the remaining characters. - */ - - for (; currPtr <= &OBJ_AT_TOS; currPtr++) { - if ((*currPtr)->bytes != tclEmptyStringRep) { - bytes = (char *) Tcl_GetByteArrayFromObj(*currPtr,&length); - memcpy(p, bytes, (size_t) length); - p += length; - } - } - } - - 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 = TclPtrGetVar(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 = TclPtrSetVar(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 = TclPtrGetVar(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 = TclPtrSetVar(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; -#ifndef TCL_WIDE_INT_IS_LONG - Tcl_WideInt w; -#endif - 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_LONG) { - long augend = *((const long *)ptr); - long 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. */ - TclNewLongObj(objResultPtr, sum); - Tcl_IncrRefCount(objResultPtr); - varPtr->value.objPtr = objResultPtr; - } else { - objResultPtr = objPtr; - TclSetLongObj(objPtr, sum); - } - goto doneIncr; - } -#ifndef TCL_WIDE_INT_IS_LONG - 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. - */ - - TclSetWideIntObj(objPtr, w+increment); - } - goto doneIncr; -#endif - } /* end if (type == TCL_NUMBER_LONG) */ -#ifndef TCL_WIDE_INT_IS_LONG - if (type == TCL_NUMBER_WIDE) { - Tcl_WideInt sum; - - w = *((const Tcl_WideInt *) ptr); - sum = w + increment; - - /* - * Check for overflow. - */ - - if (!Overflowing(w, increment, sum)) { - TRACE(("%u %ld => ", opnd, increment)); - if (Tcl_IsShared(objPtr)) { - objPtr->refCount--; /* We know it's shared. */ - objResultPtr = Tcl_NewWideIntObj(sum); - Tcl_IncrRefCount(objResultPtr); - varPtr->value.objPtr = objResultPtr; - } else { - objResultPtr = objPtr; - - /* - * We *do not* know the sum value is outside the - * long range (wide + long can yield long); use - * the function call that checks range. - */ - - Tcl_SetWideIntObj(objPtr, sum); - } - goto doneIncr; - } - } -#endif - } - 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; - } - TclNewLongObj(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. - */ - - TclNewLongObj(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 = TclPtrIncrObjVar(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 (TclPtrUnsetVar(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)) { - 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 (TclPtrUnsetVar(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(); - TclPtrUnsetVar(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: - if (varPtr && (varPtr->flags & VAR_TRACED_ARRAY) - && (TclIsVarArray(varPtr) || TclIsVarUndefined(varPtr))) { - DECACHE_STACK_INFO(); - result = TclObjCallVarTraces(iPtr, arrayPtr, varPtr, part1Ptr, - NULL, (TCL_LEAVE_ERR_MSG|TCL_NAMESPACE_ONLY| - TCL_GLOBAL_ONLY|TCL_TRACE_ARRAY), 1, 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 (TclPtrObjMakeUpvar(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 ; i<contextPtr->callPtr->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; - } - - /* - * Select the list item based on the index. Negative operand means - * end-based indexing. - */ - - if (opnd < -1) { - index = opnd+1 + objc; - } else { - index = opnd; - } - 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 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; - } - - /* - * 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 - - /* - * Adjust the indices for end-based handling. - */ - - if (fromIdx < -1) { - fromIdx += 1+objc; - if (fromIdx < -1) { - fromIdx = -1; - } - } else if (fromIdx > objc) { - fromIdx = objc; - } - if (toIdx < -1) { - toIdx += 1 + objc; - if (toIdx < -1) { - toIdx = -1; - } - } else if (toIdx > objc) { - toIdx = objc; - } - - /* - * Check if we are referring to a valid, non-empty list range, and if - * so, build the list of elements in that range. - */ - - if (fromIdx<=toIdx && fromIdx<objc && toIdx>=0) { - if (fromIdx < 0) { - fromIdx = 0; - } - if (toIdx >= objc) { - toIdx = objc-1; - } - if (fromIdx == 0 && toIdx != objc-1 && !Tcl_IsShared(valuePtr)) { - /* - * BEWARE! This is looking inside the implementation of the - * list type. - */ - - List *listPtr = valuePtr->internalRep.twoPtrValue.ptr1; - - if (listPtr->refCount == 1) { - for (index=toIdx+1; index<objc ; index++) { - TclDecrRefCount(objv[index]); - } - listPtr->elemCount = toIdx+1; - listPtr->canonicalFlag = 1; - TclInvalidateStringRep(valuePtr); - TRACE_APPEND(("%.30s\n", O2S(valuePtr))); - NEXT_INST_F(9, 0, 0); - } - } - objResultPtr = Tcl_NewListObj(toIdx-fromIdx+1, objv+fromIdx); - } else { - TclNewObj(objResultPtr); - } - - 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; - - if (valuePtr == value2Ptr) { - match = 0; - } else { - /* - * We only need to check (in)equality when we have equal length - * strings. We can use memcmp in all (n)eq cases because we - * don't need to worry about lexical LE/BE variance. - */ - - typedef int (*memCmpFn_t)(const void*, const void*, size_t); - memCmpFn_t memCmpFn; - int checkEq = ((*pc == INST_EQ) || (*pc == INST_NEQ) - || (*pc == INST_STR_EQ) || (*pc == INST_STR_NEQ)); - - if (TclIsPureByteArray(valuePtr) - && TclIsPureByteArray(value2Ptr)) { - s1 = (char *) Tcl_GetByteArrayFromObj(valuePtr, &s1len); - s2 = (char *) Tcl_GetByteArrayFromObj(value2Ptr, &s2len); - memCmpFn = memcmp; - } else if ((valuePtr->typePtr == &tclStringType) - && (value2Ptr->typePtr == &tclStringType)) { - /* - * Do a unicode-specific comparison if both of the args are of - * String type. If the char length == byte length, we can do a - * memcmp. In benchmark testing this proved the most efficient - * check between the unicode and string comparison operations. - */ - - s1len = Tcl_GetCharLength(valuePtr); - s2len = Tcl_GetCharLength(value2Ptr); - if ((s1len == valuePtr->length) - && (valuePtr->bytes != NULL) - && (s2len == value2Ptr->length) - && (value2Ptr->bytes != NULL)) { - s1 = valuePtr->bytes; - s2 = value2Ptr->bytes; - memCmpFn = memcmp; - } else { - s1 = (char *) Tcl_GetUnicode(valuePtr); - s2 = (char *) Tcl_GetUnicode(value2Ptr); - if ( -#ifdef WORDS_BIGENDIAN - 1 -#else - checkEq -#endif - ) { - memCmpFn = memcmp; - s1len *= sizeof(Tcl_UniChar); - s2len *= sizeof(Tcl_UniChar); - } else { - memCmpFn = (memCmpFn_t) Tcl_UniCharNcmp; - } - } - } else { - /* - * strcmp can't do a simple memcmp in order to handle the - * special Tcl \xC0\x80 null encoding for utf-8. - */ - - s1 = TclGetStringFromObj(valuePtr, &s1len); - s2 = TclGetStringFromObj(value2Ptr, &s2len); - if (checkEq) { - memCmpFn = memcmp; - } else { - memCmpFn = (memCmpFn_t) TclpUtfNcmp2; - } - } - - if (checkEq && (s1len != s2len)) { - match = 1; - } else { - /* - * The comparison function should compare up to the minimum - * byte length only. - */ - match = memCmpFn(s1, s2, - (size_t) ((s1len < s2len) ? s1len : s2len)); - if (match == 0) { - match = s1len - s2len; - } - } - } - - /* - * 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[TCL_UTF_MAX]; - Tcl_UniChar 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. - */ - - length = Tcl_UniCharToUtf(ch, 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)); - - /* - * Adjust indices for end-based indexing. - */ - - if (fromIdx < -1) { - fromIdx += 1 + length; - if (fromIdx < 0) { - fromIdx = 0; - } - } else if (fromIdx >= length) { - fromIdx = length; - } - if (toIdx < -1) { - toIdx += 1 + length; - } else if (toIdx >= length) { - toIdx = length - 1; - } - - /* - * Check if we can do a sane substring. - */ - - if (fromIdx <= toIdx) { - objResultPtr = Tcl_GetRange(valuePtr, fromIdx, toIdx); - } else { - TclNewObj(objResultPtr); - } - TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); - NEXT_INST_F(9, 1, 1); - - { - Tcl_UniChar *ustring1, *ustring2, *ustring3, *end, *p; - int length3; - Tcl_Obj *value3Ptr; - - case INST_STR_REPLACE: - value3Ptr = POP_OBJECT(); - valuePtr = OBJ_AT_DEPTH(2); - length = 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, length, - &fromIdx) != TCL_OK - || TclGetIntForIndexM(interp, OBJ_AT_TOS, length, - &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 (fromIdx < 0) { - fromIdx = 0; - } - - if (fromIdx > toIdx || fromIdx > length) { - TRACE_APPEND(("\"%.30s\"\n", O2S(valuePtr))); - TclDecrRefCount(value3Ptr); - NEXT_INST_F(1, 0, 0); - } - - if (toIdx > length) { - toIdx = length; - } - - if (fromIdx == 0 && toIdx == length) { - TclDecrRefCount(OBJ_AT_TOS); - OBJ_AT_TOS = value3Ptr; - TRACE_APPEND(("\"%.30s\"\n", O2S(value3Ptr))); - NEXT_INST_F(1, 0, 0); - } - - length3 = Tcl_GetCharLength(value3Ptr); - - /* - * Remove substring. In-place. - */ - - if (length3 == 0 && !Tcl_IsShared(valuePtr) && toIdx == length) { - TclDecrRefCount(value3Ptr); - Tcl_SetObjLength(valuePtr, fromIdx); - TRACE_APPEND(("\"%.30s\"\n", O2S(valuePtr))); - NEXT_INST_F(1, 0, 0); - } - - /* - * See if we can splice in place. This happens when the number of - * characters being replaced is the same as the number of characters - * in the string to be inserted. - */ - - if (length3 - 1 == toIdx - fromIdx) { - unsigned char *bytes1, *bytes2; - - /* - * Flush the info in the string internal rep that refers to the - * about-to-be-invalidated UTF-8 rep. This indicates that a new - * buffer needs to be allocated, and assumes that the value is - * already of tclStringTypePtr type, which should be true provided - * we call it after Tcl_GetUnicodeFromObj. - */ -#define MarkStringInternalRepForFlush(objPtr) \ - (GET_STRING(objPtr)->allocated = 0) - - if (Tcl_IsShared(valuePtr)) { - objResultPtr = Tcl_DuplicateObj(valuePtr); - if (TclIsPureByteArray(objResultPtr) - && TclIsPureByteArray(value3Ptr)) { - bytes1 = Tcl_GetByteArrayFromObj(objResultPtr, NULL); - bytes2 = Tcl_GetByteArrayFromObj(value3Ptr, NULL); - memcpy(bytes1 + fromIdx, bytes2, length3); - } else { - ustring1 = Tcl_GetUnicodeFromObj(objResultPtr, NULL); - ustring2 = Tcl_GetUnicodeFromObj(value3Ptr, NULL); - memcpy(ustring1 + fromIdx, ustring2, - length3 * sizeof(Tcl_UniChar)); - MarkStringInternalRepForFlush(objResultPtr); - } - Tcl_InvalidateStringRep(objResultPtr); - TclDecrRefCount(value3Ptr); - TRACE_APPEND(("\"%.30s\"\n", O2S(objResultPtr))); - NEXT_INST_F(1, 1, 1); - } else { - if (TclIsPureByteArray(valuePtr) - && TclIsPureByteArray(value3Ptr)) { - bytes1 = Tcl_GetByteArrayFromObj(valuePtr, NULL); - bytes2 = Tcl_GetByteArrayFromObj(value3Ptr, NULL); - memcpy(bytes1 + fromIdx, bytes2, length3); - } else { - ustring1 = Tcl_GetUnicodeFromObj(valuePtr, NULL); - ustring2 = Tcl_GetUnicodeFromObj(value3Ptr, NULL); - memcpy(ustring1 + fromIdx, ustring2, - length3 * sizeof(Tcl_UniChar)); - MarkStringInternalRepForFlush(valuePtr); - } - Tcl_InvalidateStringRep(valuePtr); - TclDecrRefCount(value3Ptr); - TRACE_APPEND(("\"%.30s\"\n", O2S(valuePtr))); - NEXT_INST_F(1, 0, 0); - } - } - - /* - * Get the unicode representation; this is where we guarantee to lose - * bytearrays. - */ - - ustring1 = Tcl_GetUnicodeFromObj(valuePtr, &length); - length--; - - /* - * Remove substring using copying. - */ - - if (length3 == 0) { - if (fromIdx > 0) { - objResultPtr = Tcl_NewUnicodeObj(ustring1, fromIdx); - if (toIdx < length) { - Tcl_AppendUnicodeToObj(objResultPtr, ustring1 + toIdx + 1, - length - toIdx); - } - } else { - objResultPtr = Tcl_NewUnicodeObj(ustring1 + toIdx + 1, - length - toIdx); - } - TclDecrRefCount(value3Ptr); - TRACE_APPEND(("\"%.30s\"\n", O2S(objResultPtr))); - NEXT_INST_F(1, 1, 1); - } - - /* - * Splice string pieces by full copying. - */ - - if (fromIdx > 0) { - objResultPtr = Tcl_NewUnicodeObj(ustring1, fromIdx); - Tcl_AppendObjToObj(objResultPtr, value3Ptr); - if (toIdx < length) { - Tcl_AppendUnicodeToObj(objResultPtr, ustring1 + toIdx + 1, - length - toIdx); - } - } else if (Tcl_IsShared(value3Ptr)) { - objResultPtr = Tcl_DuplicateObj(value3Ptr); - if (toIdx < length) { - Tcl_AppendUnicodeToObj(objResultPtr, ustring1 + toIdx + 1, - length - toIdx); - } - } else { - /* - * Be careful with splicing the stack in this case; we have a - * refCount:1 object in value3Ptr and we want to append to it and - * make it be the refCount:1 object at the top of the stack - * afterwards. [Bug 82e7f67325] - */ - - if (toIdx < length) { - Tcl_AppendUnicodeToObj(value3Ptr, ustring1 + toIdx + 1, - length - toIdx); - } - TRACE_APPEND(("\"%.30s\"\n", O2S(value3Ptr))); - TclDecrRefCount(valuePtr); - OBJ_AT_TOS = value3Ptr; /* Tricky! */ - 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: - ustring1 = Tcl_GetUnicodeFromObj(OBJ_AT_TOS, &length); /* Haystack */ - ustring2 = Tcl_GetUnicodeFromObj(OBJ_UNDER_TOS, &length2);/* Needle */ - - match = -1; - if (length2 > 0 && length2 <= length) { - end = ustring1 + length - length2 + 1; - for (p=ustring1 ; p<end ; p++) { - if ((*p == *ustring2) && - memcmp(ustring2,p,sizeof(Tcl_UniChar)*length2) == 0) { - match = p - ustring1; - break; - } - } - } - - 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: - ustring1 = Tcl_GetUnicodeFromObj(OBJ_AT_TOS, &length); /* Haystack */ - ustring2 = Tcl_GetUnicodeFromObj(OBJ_UNDER_TOS, &length2);/* Needle */ - - match = -1; - if (length2 > 0 && length2 <= length) { - for (p=ustring1+length-length2 ; p>=ustring1 ; p--) { - if ((*p == *ustring2) && - memcmp(ustring2,p,sizeof(Tcl_UniChar)*length2) == 0) { - match = p - ustring1; - break; - } - } - } - - 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 ; p<end ; p++) { - if (!tclStringClassTable[opnd].comparator(*p)) { - match = 0; - break; - } - } - } - TRACE_APPEND(("%d\n", match)); - JUMP_PEEPHOLE_F(match, 2, 1); - } - - case INST_STR_MATCH: - nocase = TclGetInt1AtPtr(pc+1); - valuePtr = OBJ_AT_TOS; /* String */ - value2Ptr = OBJ_UNDER_TOS; /* Pattern */ - - /* - * Check that at least one of the objects is Unicode before promoting - * both. - */ - - if ((valuePtr->typePtr == &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 = TclTrimLeft(string1, length, string2, length2); - if (trim1 < length) { - trim2 = TclTrimRight(string1, length, string2, length2); - } else { - trim2 = 0; - } - 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; - long l1, l2, lResult; - - case INST_NUM_TYPE: - if (GetNumberFromObj(NULL, OBJ_AT_TOS, &ptr1, &type1) != TCL_OK) { - type1 = 0; - } else if (type1 == TCL_NUMBER_LONG) { - /* value is between LONG_MIN and LONG_MAX */ - /* [string is integer] is -UINT_MAX to UINT_MAX range */ - int i; - - if (Tcl_GetIntFromObj(NULL, OBJ_AT_TOS, &i) != TCL_OK) { - type1 = TCL_NUMBER_WIDE; - } -#ifndef TCL_WIDE_INT_IS_LONG - } else if (type1 == TCL_NUMBER_WIDE) { - /* value is between WIDE_MIN and WIDE_MAX */ - /* [string is wideinteger] is -UWIDE_MAX to UWIDE_MAX range */ - int i; - if (Tcl_GetIntFromObj(NULL, OBJ_AT_TOS, &i) == TCL_OK) { - type1 = TCL_NUMBER_LONG; - } -#endif - } else if (type1 == TCL_NUMBER_BIG) { - /* value is an integer outside the WIDE_MIN to WIDE_MAX range */ - /* [string is wideinteger] is -UWIDE_MAX to UWIDE_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; - - if (GetNumberFromObj(NULL, valuePtr, &ptr1, &type1) != TCL_OK) { - /* - * At least one non-numeric argument - compare as strings. - */ - - goto stringCompare; - } - if (type1 == TCL_NUMBER_NAN) { - /* - * NaN first arg: NaN != to everything, other compares are false. - */ - - iResult = (*pc == INST_NEQ); - goto foundResult; - } - if (valuePtr == value2Ptr) { - compare = MP_EQ; - goto convertComparison; - } - if (GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2) != TCL_OK) { - /* - * At least one non-numeric argument - compare as strings. - */ - - goto stringCompare; - } - if (type2 == TCL_NUMBER_NAN) { - /* - * NaN 2nd arg: NaN != to everything, other compares are false. - */ - - iResult = (*pc == INST_NEQ); - goto foundResult; - } - if ((type1 == TCL_NUMBER_LONG) && (type2 == TCL_NUMBER_LONG)) { - l1 = *((const long *)ptr1); - l2 = *((const long *)ptr2); - compare = (l1 < l2) ? MP_LT : ((l1 > l2) ? 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_LONG) && (type2 == TCL_NUMBER_LONG)) { - l1 = *((const long *)ptr1); - l2 = *((const long *)ptr2); - - switch (*pc) { - case INST_MOD: - if (l2 == 0) { - TRACE(("%s %s => DIVIDE BY ZERO\n", O2S(valuePtr), - O2S(value2Ptr))); - goto divideByZero; - } else if ((l2 == 1) || (l2 == -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 (l1 == 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 { - lResult = l1 / l2; - - /* - * Force Tcl's integer division rules. - * TODO: examine for logic simplification - */ - - if ((lResult < 0 || (lResult == 0 && - ((l1 < 0 && l2 > 0) || (l1 > 0 && l2 < 0)))) && - (lResult * l2 != l1)) { - lResult -= 1; - } - lResult = l1 - l2*lResult; - goto longResultOfArithmetic; - } - - case INST_RSHIFT: - if (l2 < 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 (l1 == 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 (l2 >= (long)(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 (l1 > 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. - */ - - lResult = l1 >> ((int) l2); - goto longResultOfArithmetic; - } - - case INST_LSHIFT: - if (l2 < 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 (l1 == 0) { - TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); - objResultPtr = TCONST(0); - TRACE(("%s\n", O2S(objResultPtr))); - NEXT_INST_F(1, 2, 1); - } else if (l2 > (long) 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) l2; - - /* - * Handle shifts within the native long range. - */ - - if ((size_t) shift < CHAR_BIT*sizeof(long) && (l1 != 0) - && !((l1>0 ? l1 : ~l1) & - -(1L<<(CHAR_BIT*sizeof(long) - 1 - shift)))) { - lResult = l1 << shift; - goto longResultOfArithmetic; - } - } - - /* - * Too large; need to use the broken-out function. - */ - - TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); - break; - - case INST_BITAND: - lResult = l1 & l2; - goto longResultOfArithmetic; - case INST_BITOR: - lResult = l1 | l2; - goto longResultOfArithmetic; - case INST_BITXOR: - lResult = l1 ^ l2; - longResultOfArithmetic: - TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); - if (Tcl_IsShared(valuePtr)) { - TclNewLongObj(objResultPtr, lResult); - TRACE(("%s\n", O2S(objResultPtr))); - NEXT_INST_F(1, 2, 1); - } - TclSetLongObj(valuePtr, lResult); - TRACE(("%s\n", O2S(valuePtr))); - NEXT_INST_F(1, 1, 0); - } - } - - /* - * 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_LONG) && (type2 == TCL_NUMBER_LONG)) { - Tcl_WideInt w1, w2, wResult; - - l1 = *((const long *)ptr1); - l2 = *((const long *)ptr2); - - switch (*pc) { - case INST_ADD: - w1 = (Tcl_WideInt) l1; - w2 = (Tcl_WideInt) l2; - wResult = w1 + w2; -#ifdef TCL_WIDE_INT_IS_LONG - /* - * Check for overflow. - */ - - if (Overflowing(w1, w2, wResult)) { - goto overflow; - } -#endif - goto wideResultOfArithmetic; - - case INST_SUB: - w1 = (Tcl_WideInt) l1; - w2 = (Tcl_WideInt) l2; - wResult = w1 - w2; -#ifdef TCL_WIDE_INT_IS_LONG - /* - * 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; - } -#endif - 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); - } - Tcl_SetWideIntObj(valuePtr, wResult); - TRACE(("%s\n", O2S(valuePtr))); - NEXT_INST_F(1, 1, 0); - - case INST_DIV: - if (l2 == 0) { - TRACE(("%s %s => DIVIDE BY ZERO\n", - O2S(valuePtr), O2S(value2Ptr))); - goto divideByZero; - } else if ((l1 == LONG_MIN) && (l2 == -1)) { - /* - * Can't represent (-LONG_MIN) as a long. - */ - - goto overflow; - } - lResult = l1 / l2; - - /* - * Force Tcl's integer division rules. - * TODO: examine for logic simplification - */ - - if (((lResult < 0) || ((lResult == 0) && - ((l1 < 0 && l2 > 0) || (l1 > 0 && l2 < 0)))) && - ((lResult * l2) != l1)) { - lResult -= 1; - } - goto longResultOfArithmetic; - - case INST_MULT: - if (((sizeof(long) >= 2*sizeof(int)) - && (l1 <= INT_MAX) && (l1 >= INT_MIN) - && (l2 <= INT_MAX) && (l2 >= INT_MIN)) - || ((sizeof(long) >= 2*sizeof(short)) - && (l1 <= SHRT_MAX) && (l1 >= SHRT_MIN) - && (l2 <= SHRT_MAX) && (l2 >= SHRT_MIN))) { - lResult = l1 * l2; - goto longResultOfArithmetic; - } - } - - /* - * 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_LONG) { - l1 = *((const long *) ptr1); - if (Tcl_IsShared(valuePtr)) { - TclNewLongObj(objResultPtr, ~l1); - TRACE_APPEND(("%s\n", O2S(objResultPtr))); - NEXT_INST_F(1, 1, 1); - } - TclSetLongObj(valuePtr, ~l1); - 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_LONG: - l1 = *((const long *) ptr1); - if (l1 != LONG_MIN) { - if (Tcl_IsShared(valuePtr)) { - TclNewLongObj(objResultPtr, -l1); - TRACE_APPEND(("%s\n", O2S(objResultPtr))); - NEXT_INST_F(1, 1, 1); - } - TclSetLongObj(valuePtr, -l1); - 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, iterNum, listTmpIndex, listLen, numVars; - 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) { - TclNewLongObj(iterVarPtr->value.objPtr, -1); - Tcl_IncrRefCount(iterVarPtr->value.objPtr); - } else { - TclSetLongObj(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 = valuePtr->internalRep.longValue + 1; - TclSetLongObj(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 (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 (TclPtrSetVar(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 %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, iterMax, listLen, numVars; - int iterTmp, iterNum, listTmpDepth; - 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 = INT2PTR(0); - tmpPtr->internalRep.twoPtrValue.ptr2 = INT2PTR(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 = PTR2INT(tmpPtr->internalRep.twoPtrValue.ptr1); - iterMax = PTR2INT(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 = INT2PTR(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 (TclPtrSetVar(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 = TclPtrGetVar(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 = TclPtrSetVar(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 = TclPtrGetVar(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 = TclPtrSetVar(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 = TclPtrGetVar(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 ; i<length ; i++) { - if (Tcl_DictObjGet(interp, dictPtr, keyPtrPtr[i], - &valuePtr) != TCL_OK) { - TRACE_ERROR(interp); - Tcl_DecrRefCount(dictPtr); - goto gotError; - } - varPtr = LOCAL(duiPtr->varIndices[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 (TclPtrSetVar(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 = TclPtrGetVar(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 ; i<length ; i++) { - Var *var2Ptr = LOCAL(duiPtr->varIndices[i]); - - while (TclIsVarLink(var2Ptr)) { - var2Ptr = var2Ptr->value.linkPtr; - } - if (TclIsVarDirectReadable(var2Ptr)) { - valuePtr = var2Ptr->value.objPtr; - } else { - DECACHE_STACK_INFO(); - valuePtr = TclPtrGetVar(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 = TclPtrSetVar(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. - * ----------------------------------------------------------------- - */ - - 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; - if (codePtr->refCount-- <= 1) { - TclCleanupByteCode(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 LONG_RESULT(l) \ - if (Tcl_IsShared(valuePtr)) { \ - TclNewLongObj(objResultPtr, l); \ - return objResultPtr; \ - } else { \ - Tcl_SetLongObj(valuePtr, l); \ - return NULL; \ - } -#define WIDE_RESULT(w) \ - if (Tcl_IsShared(valuePtr)) { \ - return Tcl_NewWideIntObj(w); \ - } else { \ - Tcl_SetWideIntObj(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; - long l1, l2, lResult; - 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 */ - - l2 = 0; /* silence gcc warning */ - if (type2 == TCL_NUMBER_LONG) { - l2 = *((const long *)ptr2); - if (l2 == 0) { - return DIVIDED_BY_ZERO; - } - if ((l2 == 1) || (l2 == -1)) { - /* - * Div. by |1| always yields remainder of 0. - */ - - return constants[0]; - } - } -#ifndef TCL_WIDE_INT_IS_LONG - if (type1 == TCL_NUMBER_WIDE) { - w1 = *((const Tcl_WideInt *)ptr1); - 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. - */ - - TclBNInitBignumFromWideInt(&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; - } -#endif - 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_LONG: - invalid = (*((const long *)ptr2) < 0L); - break; -#ifndef TCL_WIDE_INT_IS_LONG - case TCL_NUMBER_WIDE: - invalid = (*((const Tcl_WideInt *)ptr2) < (Tcl_WideInt)0); - break; -#endif - case TCL_NUMBER_BIG: - Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); - invalid = (mp_cmp_d(&big2, 0) == MP_LT); - 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_LONG) && (*((const long *)ptr1) == (long)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_LONG) - || (*((const long *)ptr2) > (long) 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 long *)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_LONG) - || (*(const long *)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_LONG: - zero = (*(const long *)ptr1 > 0L); - break; -#ifndef TCL_WIDE_INT_IS_LONG - case TCL_NUMBER_WIDE: - zero = (*(const Tcl_WideInt *)ptr1 > (Tcl_WideInt)0); - break; -#endif - case TCL_NUMBER_BIG: - Tcl_TakeBignumFromObj(NULL, valuePtr, &big1); - zero = (mp_cmp_d(&big1, 0) == MP_GT); - mp_clear(&big1); - break; - default: - /* Unused, here to silence compiler warning. */ - zero = 0; - } - if (zero) { - return constants[0]; - } - LONG_RESULT(-1); - } - shift = (int)(*(const long *)ptr2); - -#ifndef TCL_WIDE_INT_IS_LONG - /* - * 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]; - } - LONG_RESULT(-1); - } - WIDE_RESULT(w1 >> shift); - } -#endif - } - - 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_cmp_d(&bigRemainder, 0) == MP_LT) { - /* - * 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_cmp_d(&big1, 0) != MP_LT) { - numPos = 1 + (mp_cmp_d(&big2, 0) != MP_LT); - First = &big1; - Second = &big2; - } else { - First = &big2; - Second = &big1; - numPos = (mp_cmp_d(First, 0) != MP_LT); - } - 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); - } - -#ifndef TCL_WIDE_INT_IS_LONG - 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); - } -#endif - l1 = *((const long *)ptr1); - l2 = *((const long *)ptr2); - - switch (opcode) { - case INST_BITAND: - lResult = l1 & l2; - break; - case INST_BITOR: - lResult = l1 | l2; - break; - case INST_BITXOR: - lResult = l1 ^ l2; - break; - default: - /* Unused, here to silence compiler warning. */ - lResult = 0; - } - LONG_RESULT(lResult); - - 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; - } - l1 = l2 = 0; - if (type2 == TCL_NUMBER_LONG) { - l2 = *((const long *) ptr2); - if (l2 == 0) { - /* - * Anything to the zero power is 1. - */ - - return constants[1]; - } else if (l2 == 1) { - /* - * Anything to the first power is itself - */ - - return NULL; - } - } - - switch (type2) { - case TCL_NUMBER_LONG: - negativeExponent = (l2 < 0); - oddExponent = (int) (l2 & 1); - break; -#ifndef TCL_WIDE_INT_IS_LONG - case TCL_NUMBER_WIDE: - w2 = *((const Tcl_WideInt *)ptr2); - negativeExponent = (w2 < 0); - oddExponent = (int) (w2 & (Tcl_WideInt)1); - break; -#endif - case TCL_NUMBER_BIG: - Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); - negativeExponent = (mp_cmp_d(&big2, 0) == MP_LT); - mp_mod_2d(&big2, 1, &big2); - oddExponent = !mp_iszero(&big2); - mp_clear(&big2); - break; - } - - if (type1 == TCL_NUMBER_LONG) { - l1 = *((const long *)ptr1); - } - if (negativeExponent) { - if (type1 == TCL_NUMBER_LONG) { - switch (l1) { - case 0: - /* - * Zero to a negative power is div by zero error. - */ - - return EXPONENT_OF_ZERO; - case -1: - if (oddExponent) { - LONG_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_LONG) { - switch (l1) { - 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]; - } - LONG_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_LONG type must hold a value larger than we - * accept. - */ - - if (type2 != TCL_NUMBER_LONG) { - Tcl_SetObjResult(interp, Tcl_NewStringObj( - "exponent too large", -1)); - return GENERAL_ARITHMETIC_ERROR; - } - - if (type1 == TCL_NUMBER_LONG) { - if (l1 == 2) { - /* - * Reduce small powers of 2 to shifts. - */ - - if ((unsigned long) l2 < CHAR_BIT * sizeof(long) - 1) { - LONG_RESULT(1L << l2); - } -#if !defined(TCL_WIDE_INT_IS_LONG) - if ((unsigned long)l2 < CHAR_BIT*sizeof(Tcl_WideInt) - 1) { - WIDE_RESULT(((Tcl_WideInt) 1) << l2); - } -#endif - goto overflowExpon; - } - if (l1 == -2) { - int signum = oddExponent ? -1 : 1; - - /* - * Reduce small powers of 2 to shifts. - */ - - if ((unsigned long) l2 < CHAR_BIT * sizeof(long) - 1) { - LONG_RESULT(signum * (1L << l2)); - } -#if !defined(TCL_WIDE_INT_IS_LONG) - if ((unsigned long)l2 < CHAR_BIT*sizeof(Tcl_WideInt) - 1){ - WIDE_RESULT(signum * (((Tcl_WideInt) 1) << l2)); - } -#endif - goto overflowExpon; - } -#if (LONG_MAX == 0x7fffffff) - if (l2 - 2 < (long)MaxBase32Size - && l1 <= MaxBase32[l2 - 2] - && l1 >= -MaxBase32[l2 - 2]) { - /* - * Small powers of 32-bit integers. - */ - - lResult = l1 * l1; /* b**2 */ - switch (l2) { - case 2: - break; - case 3: - lResult *= l1; /* b**3 */ - break; - case 4: - lResult *= lResult; /* b**4 */ - break; - case 5: - lResult *= lResult; /* b**4 */ - lResult *= l1; /* b**5 */ - break; - case 6: - lResult *= l1; /* b**3 */ - lResult *= lResult; /* b**6 */ - break; - case 7: - lResult *= l1; /* b**3 */ - lResult *= lResult; /* b**6 */ - lResult *= l1; /* b**7 */ - break; - case 8: - lResult *= lResult; /* b**4 */ - lResult *= lResult; /* b**8 */ - break; - } - LONG_RESULT(lResult); - } - - if (l1 - 3 >= 0 && l1 -2 < (long)Exp32IndexSize - && l2 - 2 < (long)(Exp32ValueSize + MaxBase32Size)) { - base = Exp32Index[l1 - 3] - + (unsigned short) (l2 - 2 - MaxBase32Size); - if (base < Exp32Index[l1 - 2]) { - /* - * 32-bit number raised to intermediate power, done by - * table lookup. - */ - - LONG_RESULT(Exp32Value[base]); - } - } - if (-l1 - 3 >= 0 && -l1 - 2 < (long)Exp32IndexSize - && l2 - 2 < (long)(Exp32ValueSize + MaxBase32Size)) { - base = Exp32Index[-l1 - 3] - + (unsigned short) (l2 - 2 - MaxBase32Size); - if (base < Exp32Index[-l1 - 2]) { - /* - * 32-bit number raised to intermediate power, done by - * table lookup. - */ - - lResult = (oddExponent) ? - -Exp32Value[base] : Exp32Value[base]; - LONG_RESULT(lResult); - } - } -#endif - } -#if (LONG_MAX > 0x7fffffff) || !defined(TCL_WIDE_INT_IS_LONG) - if (type1 == TCL_NUMBER_LONG) { - w1 = l1; -#ifndef TCL_WIDE_INT_IS_LONG - } else if (type1 == TCL_NUMBER_WIDE) { - w1 = *((const Tcl_WideInt *) ptr1); -#endif - } else { - goto overflowExpon; - } - if (l2 - 2 < (long)MaxBase64Size - && w1 <= MaxBase64[l2 - 2] - && w1 >= -MaxBase64[l2 - 2]) { - /* - * Small powers of integers whose result is wide. - */ - - wResult = w1 * w1; /* b**2 */ - switch (l2) { - case 2: - break; - case 3: - wResult *= l1; /* 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 - && l2 - 2 < (long)(Exp64ValueSize + MaxBase64Size)) { - base = Exp64Index[w1 - 3] - + (unsigned short) (l2 - 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 - && l2 - 2 < (long)(Exp64ValueSize + MaxBase64Size)) { - base = Exp64Index[-w1 - 3] - + (unsigned short) (l2 - 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); - } - } -#endif - - 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(&big1, big2.dp[0], &bigResult); - 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; -#ifndef TCL_WIDE_INT_IS_LONG - if ((type1 == TCL_NUMBER_WIDE) || (type2 == TCL_NUMBER_WIDE)) -#endif - { - /* - * Check for overflow. - */ - - if (Overflowing(w1, w2, wResult)) { - goto overflowBasic; - } - } - break; - - case INST_SUB: - wResult = w1 - w2; -#ifndef TCL_WIDE_INT_IS_LONG - if ((type1 == TCL_NUMBER_WIDE) || (type2 == TCL_NUMBER_WIDE)) -#endif - { - /* - * 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 ((type1 != TCL_NUMBER_LONG) || (type2 != TCL_NUMBER_LONG) - || (sizeof(Tcl_WideInt) < 2*sizeof(long))) { - 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: -#ifndef TCL_WIDE_INT_IS_LONG - if (type == TCL_NUMBER_WIDE) { - w = *((const Tcl_WideInt *) ptr); - WIDE_RESULT(~w); - } -#endif - 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_LONG: - w = (Tcl_WideInt) (*((const long *) ptr)); - if (w != LLONG_MIN) { - WIDE_RESULT(-w); - } - TclBNInitBignumFromLong(&big, *(const long *) ptr); - break; -#ifndef TCL_WIDE_INT_IS_LONG - case TCL_NUMBER_WIDE: - w = *((const Tcl_WideInt *) ptr); - if (w != LLONG_MIN) { - WIDE_RESULT(-w); - } - TclBNInitBignumFromWideInt(&big, w); - break; -#endif - default: - Tcl_TakeBignumFromObj(NULL, valuePtr, &big); - } - mp_neg(&big, &big); - BIG_RESULT(&big); - } - - Tcl_Panic("unexpected opcode"); - return NULL; -} -#undef LONG_RESULT -#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, type2, compare; - ClientData ptr1, ptr2; - mp_int big1, big2; - double d1, d2, tmp; - long l1, l2; -#ifndef TCL_WIDE_INT_IS_LONG - Tcl_WideInt w1, w2; -#endif - - (void) GetNumberFromObj(NULL, valuePtr, &ptr1, &type1); - (void) GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2); - - switch (type1) { - case TCL_NUMBER_LONG: - l1 = *((const long *)ptr1); - switch (type2) { - case TCL_NUMBER_LONG: - l2 = *((const long *)ptr2); - longCompare: - return (l1 < l2) ? MP_LT : ((l1 > l2) ? MP_GT : MP_EQ); -#ifndef TCL_WIDE_INT_IS_LONG - case TCL_NUMBER_WIDE: - w2 = *((const Tcl_WideInt *)ptr2); - w1 = (Tcl_WideInt)l1; - goto wideCompare; -#endif - case TCL_NUMBER_DOUBLE: - d2 = *((const double *)ptr2); - d1 = (double) l1; - - /* - * 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(long) || l1 == (long) 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)LONG_MIN) { - return MP_GT; - } - if (d2 > (double)LONG_MAX) { - return MP_LT; - } - l2 = (long) d2; - goto longCompare; - case TCL_NUMBER_BIG: - Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); - if (mp_cmp_d(&big2, 0) == MP_LT) { - compare = MP_GT; - } else { - compare = MP_LT; - } - mp_clear(&big2); - return compare; - } - -#ifndef TCL_WIDE_INT_IS_LONG - 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_LONG: - l2 = *((const long *)ptr2); - w2 = (Tcl_WideInt)l2; - goto wideCompare; - case TCL_NUMBER_DOUBLE: - d2 = *((const double *)ptr2); - d1 = (double) w1; - if (DBL_MANT_DIG > CHAR_BIT*sizeof(Tcl_WideInt) - || w1 == (Tcl_WideInt) d1 || modf(d2, &tmp) != 0.0) { - goto doubleCompare; - } - 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_cmp_d(&big2, 0) == MP_LT) { - compare = MP_GT; - } else { - compare = MP_LT; - } - mp_clear(&big2); - return compare; - } -#endif - - 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_LONG: - l2 = *((const long *)ptr2); - d2 = (double) l2; - if (DBL_MANT_DIG > CHAR_BIT*sizeof(long) || l2 == (long) d2 - || modf(d1, &tmp) != 0.0) { - goto doubleCompare; - } - if (d1 < (double)LONG_MIN) { - return MP_LT; - } - if (d1 > (double)LONG_MAX) { - return MP_GT; - } - l1 = (long) d1; - goto longCompare; -#ifndef TCL_WIDE_INT_IS_LONG - 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; -#endif - case TCL_NUMBER_BIG: - if (TclIsInfinite(d1)) { - return (d1 > 0.0) ? MP_GT : MP_LT; - } - Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); - if ((d1 < (double)LONG_MAX) && (d1 > (double)LONG_MIN)) { - if (mp_cmp_d(&big2, 0) == MP_LT) { - 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) { -#ifndef TCL_WIDE_INT_IS_LONG - case TCL_NUMBER_WIDE: -#endif - case TCL_NUMBER_LONG: - 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)LONG_MAX) && (d2 > (double)LONG_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 %u, epoch %u, interp 0x%p (epoch %u)\n", - codePtr, 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", Tcl_GetString(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 = Tcl_GetStringFromObj(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", - Tcl_GetString(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) Tcl_GetStringFromObj(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 = Tcl_GetStringFromObj(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: - */ |