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authorrjohnson <rjohnson>1998-03-26 14:45:59 (GMT)
committerrjohnson <rjohnson>1998-03-26 14:45:59 (GMT)
commit2b5738da524e944cda39e24c0a87b745a43bd8c3 (patch)
tree6e8c9473978f6dab66c601e911721a7bd9d70b1b /generic/tclExecute.c
parentc6a259aeeca4814a97cf6694814c63e74e4e18fa (diff)
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+/*
+ * tclExecute.c --
+ *
+ * This file contains procedures that execute byte-compiled Tcl
+ * commands.
+ *
+ * Copyright (c) 1996-1997 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) tclExecute.c 1.102 97/11/06 11:36:35
+ */
+
+#include "tclInt.h"
+#include "tclCompile.h"
+
+#ifdef NO_FLOAT_H
+# include "../compat/float.h"
+#else
+# include <float.h>
+#endif
+#ifndef TCL_NO_MATH
+#include "tclMath.h"
+#endif
+
+/*
+ * The stuff below is a bit of a hack so that this file can be used
+ * in environments that include no UNIX, i.e. no errno. Just define
+ * errno here.
+ */
+
+#ifndef TCL_GENERIC_ONLY
+#include "tclPort.h"
+#else
+#define NO_ERRNO_H
+#endif
+
+#ifdef NO_ERRNO_H
+int errno;
+#define EDOM 33
+#define ERANGE 34
+#endif
+
+/*
+ * Boolean flag indicating whether the Tcl bytecode interpreter has been
+ * initialized.
+ */
+
+static int execInitialized = 0;
+
+/*
+ * 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;
+
+/*
+ * The following global variable is use to signal matherr that Tcl
+ * is responsible for the arithmetic, so errors can be handled in a
+ * fashion appropriate for Tcl. Zero means no Tcl math is in
+ * progress; non-zero means Tcl is doing math.
+ */
+
+int tcl_MathInProgress = 0;
+
+/*
+ * The variable below serves no useful purpose except to generate
+ * a reference to matherr, so that the Tcl version of matherr is
+ * linked in rather than the system version. Without this reference
+ * the need for matherr won't be discovered during linking until after
+ * libtcl.a has been processed, so Tcl's version won't be used.
+ */
+
+#ifdef NEED_MATHERR
+extern int matherr();
+int (*tclMatherrPtr)() = matherr;
+#endif
+
+/*
+ * Array of instruction names.
+ */
+
+static char *opName[256];
+
+/*
+ * 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.
+ */
+
+static char *operatorStrings[] = {
+ "||", "&&", "|", "^", "&", "==", "!=", "<", ">", "<=", ">=", "<<", ">>",
+ "+", "-", "*", "/", "%", "+", "-", "~", "!",
+ "BUILTIN FUNCTION", "FUNCTION"
+};
+
+/*
+ * Mapping from Tcl result codes to strings; used for error and debugging
+ * messages.
+ */
+
+#ifdef TCL_COMPILE_DEBUG
+static char *resultStrings[] = {
+ "TCL_OK", "TCL_ERROR", "TCL_RETURN", "TCL_BREAK", "TCL_CONTINUE"
+};
+#endif /* TCL_COMPILE_DEBUG */
+
+/*
+ * The following are statistics-related variables that record information
+ * about the bytecode compiler and interpreter's operation. This includes
+ * an array that records for each instruction how often it is executed.
+ */
+
+#ifdef TCL_COMPILE_STATS
+static long numExecutions = 0;
+static int instructionCount[256];
+#endif /* TCL_COMPILE_STATS */
+
+/*
+ * Macros for testing floating-point values for certain special cases. Test
+ * for not-a-number by comparing a value against itself; test for infinity
+ * by comparing against the largest floating-point value.
+ */
+
+#define IS_NAN(v) ((v) != (v))
+#ifdef DBL_MAX
+# define IS_INF(v) (((v) > DBL_MAX) || ((v) < -DBL_MAX))
+#else
+# define IS_INF(v) 0
+#endif
+
+/*
+ * Macro to adjust the program counter and restart the instruction execution
+ * loop after each instruction is executed.
+ */
+
+#define ADJUST_PC(instBytes) \
+ pc += instBytes; continue
+
+/*
+ * 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 TclExecuteByteCode (and a few other
+ * procedures that use this scheme) that could result in a recursive call
+ * to TclExecuteByteCode.
+ */
+
+#define CACHE_STACK_INFO() \
+ stackPtr = eePtr->stackPtr; \
+ stackTop = eePtr->stackTop
+
+#define DECACHE_STACK_INFO() \
+ eePtr->stackTop = stackTop
+
+/*
+ * 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.
+ */
+
+#define STK_ITEM(offset) (stackPtr[stackTop + (offset)])
+#define STK_OBJECT(offset) (STK_ITEM(offset).o)
+#define STK_INT(offset) (STK_ITEM(offset).i)
+#define STK_POINTER(offset) (STK_ITEM(offset).p)
+
+/*
+ * 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(stackPtr[++stackTop].o = (objPtr))
+
+#define POP_OBJECT() \
+ (stackPtr[stackTop--].o)
+
+/*
+ * Macros used to trace instruction execution. The macros TRACE,
+ * TRACE_WITH_OBJ, and O2S are only used inside TclExecuteByteCode.
+ * O2S is only used in TRACE* calls to get a string from an object.
+ *
+ * NOTE THAT CLIENTS OF O2S ARE LIKELY TO FAIL IF THE OBJECT'S
+ * STRING REP CONTAINS NULLS.
+ */
+
+#ifdef TCL_COMPILE_DEBUG
+
+#define O2S(objPtr) \
+ Tcl_GetStringFromObj((objPtr), &length)
+
+#ifdef TCL_COMPILE_STATS
+#define TRACE(a) \
+ if (traceInstructions) { \
+ fprintf(stdout, "%d: %d,%ld (%u) ", iPtr->numLevels, \
+ stackTop, (tclObjsAlloced - tclObjsFreed), \
+ (unsigned int)(pc - codePtr->codeStart)); \
+ printf a; \
+ fflush(stdout); \
+ }
+#define TRACE_WITH_OBJ(a, objPtr) \
+ if (traceInstructions) { \
+ fprintf(stdout, "%d: %d,%ld (%u) ", iPtr->numLevels, \
+ stackTop, (tclObjsAlloced - tclObjsFreed), \
+ (unsigned int)(pc - codePtr->codeStart)); \
+ printf a; \
+ bytes = Tcl_GetStringFromObj((objPtr), &length); \
+ TclPrintSource(stdout, bytes, TclMin(length, 30)); \
+ fprintf(stdout, "\n"); \
+ fflush(stdout); \
+ }
+#else /* not TCL_COMPILE_STATS */
+#define TRACE(a) \
+ if (traceInstructions) { \
+ fprintf(stdout, "%d: %d (%u) ", iPtr->numLevels, stackTop, \
+ (unsigned int)(pc - codePtr->codeStart)); \
+ printf a; \
+ fflush(stdout); \
+ }
+#define TRACE_WITH_OBJ(a, objPtr) \
+ if (traceInstructions) { \
+ fprintf(stdout, "%d: %d (%u) ", iPtr->numLevels, stackTop, \
+ (unsigned int)(pc - codePtr->codeStart)); \
+ printf a; \
+ bytes = Tcl_GetStringFromObj((objPtr), &length); \
+ TclPrintSource(stdout, bytes, TclMin(length, 30)); \
+ fprintf(stdout, "\n"); \
+ fflush(stdout); \
+ }
+#endif /* TCL_COMPILE_STATS */
+
+#else /* not TCL_COMPILE_DEBUG */
+
+#define TRACE(a)
+#define TRACE_WITH_OBJ(a, objPtr)
+#define O2S(objPtr)
+
+#endif /* TCL_COMPILE_DEBUG */
+
+/*
+ * Declarations for local procedures to this file:
+ */
+
+static void CallTraceProcedure _ANSI_ARGS_((Tcl_Interp *interp,
+ Trace *tracePtr, Command *cmdPtr,
+ char *command, int numChars,
+ int objc, Tcl_Obj *objv[]));
+static void DupCmdNameInternalRep _ANSI_ARGS_((Tcl_Obj *objPtr,
+ Tcl_Obj *copyPtr));
+static int ExprAbsFunc _ANSI_ARGS_((Tcl_Interp *interp,
+ ExecEnv *eePtr, ClientData clientData));
+static int ExprBinaryFunc _ANSI_ARGS_((Tcl_Interp *interp,
+ ExecEnv *eePtr, ClientData clientData));
+static int ExprCallMathFunc _ANSI_ARGS_((Tcl_Interp *interp,
+ ExecEnv *eePtr, int objc, Tcl_Obj **objv));
+static int ExprDoubleFunc _ANSI_ARGS_((Tcl_Interp *interp,
+ ExecEnv *eePtr, ClientData clientData));
+static int ExprIntFunc _ANSI_ARGS_((Tcl_Interp *interp,
+ ExecEnv *eePtr, ClientData clientData));
+static int ExprRandFunc _ANSI_ARGS_((Tcl_Interp *interp,
+ ExecEnv *eePtr, ClientData clientData));
+static int ExprRoundFunc _ANSI_ARGS_((Tcl_Interp *interp,
+ ExecEnv *eePtr, ClientData clientData));
+static int ExprSrandFunc _ANSI_ARGS_((Tcl_Interp *interp,
+ ExecEnv *eePtr, ClientData clientData));
+static int ExprUnaryFunc _ANSI_ARGS_((Tcl_Interp *interp,
+ ExecEnv *eePtr, ClientData clientData));
+#ifdef TCL_COMPILE_STATS
+static int EvalStatsCmd _ANSI_ARGS_((ClientData clientData,
+ Tcl_Interp *interp, int argc, char **argv));
+#endif /* TCL_COMPILE_STATS */
+static void FreeCmdNameInternalRep _ANSI_ARGS_((
+ Tcl_Obj *objPtr));
+static char * GetSrcInfoForPc _ANSI_ARGS_((unsigned char *pc,
+ ByteCode* codePtr, int *lengthPtr));
+static void GrowEvaluationStack _ANSI_ARGS_((ExecEnv *eePtr));
+static void IllegalExprOperandType _ANSI_ARGS_((
+ Tcl_Interp *interp, unsigned int opCode,
+ Tcl_Obj *opndPtr));
+static void InitByteCodeExecution _ANSI_ARGS_((
+ Tcl_Interp *interp));
+static void PrintByteCodeInfo _ANSI_ARGS_((ByteCode *codePtr));
+static void RecordTracebackInfo _ANSI_ARGS_((Tcl_Interp *interp,
+ unsigned char *pc, ByteCode *codePtr));
+static int SetCmdNameFromAny _ANSI_ARGS_((Tcl_Interp *interp,
+ Tcl_Obj *objPtr));
+#ifdef TCL_COMPILE_DEBUG
+static char * StringForResultCode _ANSI_ARGS_((int result));
+#endif /* TCL_COMPILE_DEBUG */
+static void UpdateStringOfCmdName _ANSI_ARGS_((Tcl_Obj *objPtr));
+#ifdef TCL_COMPILE_DEBUG
+static void ValidatePcAndStackTop _ANSI_ARGS_((
+ ByteCode *codePtr, unsigned char *pc,
+ int stackTop, int stackLowerBound,
+ int stackUpperBound));
+#endif /* TCL_COMPILE_DEBUG */
+
+/*
+ * 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.
+ */
+
+BuiltinFunc builtinFuncTable[] = {
+#ifndef TCL_NO_MATH
+ {"acos", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) acos},
+ {"asin", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) asin},
+ {"atan", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) atan},
+ {"atan2", 2, {TCL_DOUBLE, TCL_DOUBLE}, ExprBinaryFunc, (ClientData) atan2},
+ {"ceil", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) ceil},
+ {"cos", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) cos},
+ {"cosh", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) cosh},
+ {"exp", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) exp},
+ {"floor", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) floor},
+ {"fmod", 2, {TCL_DOUBLE, TCL_DOUBLE}, ExprBinaryFunc, (ClientData) fmod},
+ {"hypot", 2, {TCL_DOUBLE, TCL_DOUBLE}, ExprBinaryFunc, (ClientData) hypot},
+ {"log", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) log},
+ {"log10", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) log10},
+ {"pow", 2, {TCL_DOUBLE, TCL_DOUBLE}, ExprBinaryFunc, (ClientData) pow},
+ {"sin", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) sin},
+ {"sinh", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) sinh},
+ {"sqrt", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) sqrt},
+ {"tan", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) tan},
+ {"tanh", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) tanh},
+#endif
+ {"abs", 1, {TCL_EITHER}, ExprAbsFunc, 0},
+ {"double", 1, {TCL_EITHER}, ExprDoubleFunc, 0},
+ {"int", 1, {TCL_EITHER}, ExprIntFunc, 0},
+ {"rand", 0, {TCL_EITHER}, ExprRandFunc, 0}, /* NOTE: rand takes no args. */
+ {"round", 1, {TCL_EITHER}, ExprRoundFunc, 0},
+ {"srand", 1, {TCL_INT}, ExprSrandFunc, 0},
+ {0},
+};
+
+/*
+ * The structure below defines the command name Tcl object type by means of
+ * procedures that can be invoked by generic object code. Objects of this
+ * type cache the Command pointer that results from looking up command names
+ * in the command hashtable. Such objects appear as the zeroth ("command
+ * name") argument in a Tcl command.
+ */
+
+Tcl_ObjType tclCmdNameType = {
+ "cmdName", /* name */
+ FreeCmdNameInternalRep, /* freeIntRepProc */
+ DupCmdNameInternalRep, /* dupIntRepProc */
+ UpdateStringOfCmdName, /* updateStringProc */
+ SetCmdNameFromAny /* setFromAnyProc */
+};
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * 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 registers the command name
+ * Tcl_ObjType. It also establishes the link between the Tcl
+ * "tcl_traceExec" and C "tclTraceExec" variables.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+InitByteCodeExecution(interp)
+ Tcl_Interp *interp; /* Interpreter for which the Tcl variable
+ * "tcl_traceExec" is linked to control
+ * instruction tracing. */
+{
+ int i;
+
+ Tcl_RegisterObjType(&tclCmdNameType);
+
+ (VOID *) memset(opName, 0, sizeof(opName));
+ for (i = 0; instructionTable[i].name != NULL; i++) {
+ opName[i] = instructionTable[i].name;
+ }
+
+#ifdef TCL_COMPILE_STATS
+ (VOID *) memset(instructionCount, 0, sizeof(instructionCount));
+ (VOID *) memset(tclByteCodeCount, 0, sizeof(tclByteCodeCount));
+ (VOID *) memset(tclSourceCount, 0, sizeof(tclSourceCount));
+
+ Tcl_CreateCommand(interp, "evalstats", EvalStatsCmd,
+ (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
+#endif /* TCL_COMPILE_STATS */
+
+ if (Tcl_LinkVar(interp, "tcl_traceExec", (char *) &tclTraceExec,
+ TCL_LINK_INT) != TCL_OK) {
+ panic("InitByteCodeExecution: can't create link for tcl_traceExec variable");
+ }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * 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 TclExecuteByteCode 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 TclExecuteByteCode.
+ *
+ *----------------------------------------------------------------------
+ */
+
+#define TCL_STACK_INITIAL_SIZE 2000
+
+ExecEnv *
+TclCreateExecEnv(interp)
+ Tcl_Interp *interp; /* Interpreter for which the execution
+ * environment is being created. */
+{
+ ExecEnv *eePtr = (ExecEnv *) ckalloc(sizeof(ExecEnv));
+
+ eePtr->stackPtr = (StackItem *)
+ ckalloc((unsigned) (TCL_STACK_INITIAL_SIZE * sizeof(StackItem)));
+ eePtr->stackTop = -1;
+ eePtr->stackEnd = (TCL_STACK_INITIAL_SIZE - 1);
+
+ if (!execInitialized) {
+ InitByteCodeExecution(interp);
+ execInitialized = 1;
+ }
+
+ return eePtr;
+}
+#undef TCL_STACK_INITIAL_SIZE
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * 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.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclDeleteExecEnv(eePtr)
+ ExecEnv *eePtr; /* Execution environment to free. */
+{
+ ckfree((char *) eePtr->stackPtr);
+ ckfree((char *) eePtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclFinalizeExecEnv --
+ *
+ * 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
+TclFinalizeExecEnv()
+{
+ execInitialized = 0;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GrowEvaluationStack --
+ *
+ * This procedure grows a Tcl evaluation stack stored in an ExecEnv.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * The size of the evaluation stack is doubled.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+GrowEvaluationStack(eePtr)
+ register ExecEnv *eePtr; /* Points to the ExecEnv with an evaluation
+ * stack to enlarge. */
+{
+ /*
+ * The current Tcl stack elements are stored from eePtr->stackPtr[0]
+ * to eePtr->stackPtr[eePtr->stackEnd] (inclusive).
+ */
+
+ int currElems = (eePtr->stackEnd + 1);
+ int newElems = 2*currElems;
+ int currBytes = currElems * sizeof(StackItem);
+ int newBytes = 2*currBytes;
+ StackItem *newStackPtr = (StackItem *) ckalloc((unsigned) newBytes);
+
+ /*
+ * Copy the existing stack items to the new stack space, free the old
+ * storage if appropriate, and mark new space as malloc'ed.
+ */
+
+ memcpy((VOID *) newStackPtr, (VOID *) eePtr->stackPtr,
+ (size_t) currBytes);
+ ckfree((char *) eePtr->stackPtr);
+ eePtr->stackPtr = newStackPtr;
+ eePtr->stackEnd = (newElems - 1); /* i.e. index of last usable item */
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclExecuteByteCode --
+ *
+ * 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.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclExecuteByteCode(interp, codePtr)
+ Tcl_Interp *interp; /* Token for command interpreter. */
+ ByteCode *codePtr; /* The bytecode sequence to interpret. */
+{
+ Interp *iPtr = (Interp *) interp;
+ ExecEnv *eePtr = iPtr->execEnvPtr;
+ /* Points to the execution environment. */
+ register StackItem *stackPtr = eePtr->stackPtr;
+ /* Cached evaluation stack base pointer. */
+ register int stackTop = eePtr->stackTop;
+ /* Cached top index of evaluation stack. */
+ Tcl_Obj **objArrayPtr = codePtr->objArrayPtr;
+ /* Points to the ByteCode's object array. */
+ unsigned char *pc = codePtr->codeStart;
+ /* The current program counter. */
+ unsigned char opCode; /* The current instruction code. */
+ int opnd; /* Current instruction's operand byte. */
+ int pcAdjustment; /* Hold pc adjustment after instruction. */
+ int initStackTop = stackTop;/* Stack top at start of execution. */
+ 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. */
+ int result = TCL_OK; /* Return code returned after execution. */
+ int traceInstructions = (tclTraceExec == 3);
+ Tcl_Obj *valuePtr, *value2Ptr, *namePtr, *objPtr;
+ char *bytes;
+ int length;
+ long i;
+ Tcl_DString command; /* Used for debugging. If tclTraceExec >= 2
+ * holds a string representing the last
+ * command invoked. */
+
+ /*
+ * This procedure uses a stack to hold information about catch commands.
+ * This information is the current operand stack top when starting to
+ * execute the code for each catch command. It starts out with stack-
+ * allocated space but uses dynamically-allocated storage if needed.
+ */
+
+#define STATIC_CATCH_STACK_SIZE 5
+ int (catchStackStorage[STATIC_CATCH_STACK_SIZE]);
+ int *catchStackPtr = catchStackStorage;
+ int catchTop = -1;
+
+ /*
+ * THIS PROC FAILS IF AN OBJECT'S STRING REP HAS A NULL BYTE.
+ */
+
+ if (tclTraceExec >= 2) {
+ PrintByteCodeInfo(codePtr);
+#ifdef TCL_COMPILE_STATS
+ fprintf(stdout, " Starting stack top=%d, system objects=%ld\n",
+ eePtr->stackTop, (tclObjsAlloced - tclObjsFreed));
+#else
+ fprintf(stdout, " Starting stack top=%d\n", eePtr->stackTop);
+#endif /* TCL_COMPILE_STATS */
+ fflush(stdout);
+ }
+
+#ifdef TCL_COMPILE_STATS
+ numExecutions++;
+#endif /* TCL_COMPILE_STATS */
+
+ /*
+ * 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.
+ */
+
+ if (codePtr->maxExcRangeDepth > STATIC_CATCH_STACK_SIZE) {
+ catchStackPtr = (int *)
+ ckalloc(codePtr->maxExcRangeDepth * sizeof(int));
+ }
+
+ /*
+ * Make sure the stack has enough room to execute this ByteCode.
+ */
+
+ while ((stackTop + codePtr->maxStackDepth) > eePtr->stackEnd) {
+ GrowEvaluationStack(eePtr);
+ stackPtr = eePtr->stackPtr;
+ }
+
+ /*
+ * Initialize the buffer that holds a string containing the name and
+ * arguments for the last invoked command.
+ */
+
+ Tcl_DStringInit(&command);
+
+ /*
+ * Loop executing instructions until a "done" instruction, a TCL_RETURN,
+ * or some error.
+ */
+
+ for (;;) {
+#ifdef TCL_COMPILE_DEBUG
+ ValidatePcAndStackTop(codePtr, pc, stackTop, initStackTop,
+ eePtr->stackEnd);
+#else /* not TCL_COMPILE_DEBUG */
+ if (traceInstructions) {
+#ifdef TCL_COMPILE_STATS
+ fprintf(stdout, "%d: %d,%ld ", iPtr->numLevels, stackTop,
+ (tclObjsAlloced - tclObjsFreed));
+#else /* TCL_COMPILE_STATS */
+ fprintf(stdout, "%d: %d ", iPtr->numLevels, stackTop);
+#endif /* TCL_COMPILE_STATS */
+ TclPrintInstruction(codePtr, pc);
+ fflush(stdout);
+ }
+#endif /* TCL_COMPILE_DEBUG */
+
+ opCode = *pc;
+#ifdef TCL_COMPILE_STATS
+ instructionCount[opCode]++;
+#endif /* TCL_COMPILE_STATS */
+
+ switch (opCode) {
+ case INST_DONE:
+ /*
+ * Pop the topmost object from the stack, set the interpreter's
+ * object result to point to it, and return.
+ */
+ valuePtr = POP_OBJECT();
+ Tcl_SetObjResult(interp, valuePtr);
+ TclDecrRefCount(valuePtr);
+ if (stackTop != initStackTop) {
+ fprintf(stderr, "\nTclExecuteByteCode: done instruction at pc %u: stack top %d != entry stack top %d\n",
+ (unsigned int)(pc - codePtr->codeStart),
+ (unsigned int) stackTop,
+ (unsigned int) initStackTop);
+ fprintf(stderr, " Source: ");
+ TclPrintSource(stderr, codePtr->source, 150);
+ panic("TclExecuteByteCode execution failure: end stack top != start stack top");
+ }
+ TRACE_WITH_OBJ(("done => return code=%d, result is ", result),
+ iPtr->objResultPtr);
+ goto done;
+
+ case INST_PUSH1:
+ valuePtr = objArrayPtr[TclGetUInt1AtPtr(pc+1)];
+ PUSH_OBJECT(valuePtr);
+ TRACE_WITH_OBJ(("push1 %u => ", TclGetUInt1AtPtr(pc+1)),
+ valuePtr);
+ ADJUST_PC(2);
+
+ case INST_PUSH4:
+ valuePtr = objArrayPtr[TclGetUInt4AtPtr(pc+1)];
+ PUSH_OBJECT(valuePtr);
+ TRACE_WITH_OBJ(("push4 %u => ", TclGetUInt4AtPtr(pc+1)),
+ valuePtr);
+ ADJUST_PC(5);
+
+ case INST_POP:
+ valuePtr = POP_OBJECT();
+ TRACE_WITH_OBJ(("pop => discarding "), valuePtr);
+ TclDecrRefCount(valuePtr); /* finished with pop'ed object. */
+ ADJUST_PC(1);
+
+ case INST_DUP:
+ valuePtr = stackPtr[stackTop].o;
+ PUSH_OBJECT(Tcl_DuplicateObj(valuePtr));
+ TRACE_WITH_OBJ(("dup => "), valuePtr);
+ ADJUST_PC(1);
+
+ case INST_CONCAT1:
+ opnd = TclGetUInt1AtPtr(pc+1);
+ {
+ Tcl_Obj *concatObjPtr;
+ int totalLen = 0;
+
+ /*
+ * Concatenate strings (with no separators) from the top
+ * opnd items on the stack starting with the deepest item.
+ * First, determine how many characters are needed.
+ */
+
+ for (i = (stackTop - (opnd-1)); i <= stackTop; i++) {
+ valuePtr = stackPtr[i].o;
+ bytes = TclGetStringFromObj(valuePtr, &length);
+ if (bytes != NULL) {
+ totalLen += length;
+ }
+ }
+
+ /*
+ * Initialize the new append string object by appending the
+ * strings of the opnd stack objects. Also pop the objects.
+ */
+
+ TclNewObj(concatObjPtr);
+ if (totalLen > 0) {
+ char *p = (char *) ckalloc((unsigned) (totalLen + 1));
+ concatObjPtr->bytes = p;
+ concatObjPtr->length = totalLen;
+ for (i = (stackTop - (opnd-1)); i <= stackTop; i++) {
+ valuePtr = stackPtr[i].o;
+ bytes = TclGetStringFromObj(valuePtr, &length);
+ if (bytes != NULL) {
+ memcpy((VOID *) p, (VOID *) bytes,
+ (size_t) length);
+ p += length;
+ }
+ TclDecrRefCount(valuePtr);
+ }
+ *p = '\0';
+ } else {
+ for (i = (stackTop - (opnd-1)); i <= stackTop; i++) {
+ valuePtr = stackPtr[i].o;
+ Tcl_DecrRefCount(valuePtr);
+ }
+ }
+ stackTop -= opnd;
+
+ PUSH_OBJECT(concatObjPtr);
+ TRACE_WITH_OBJ(("concat %u => ", opnd), concatObjPtr);
+ ADJUST_PC(2);
+ }
+
+ case INST_INVOKE_STK4:
+ opnd = TclGetUInt4AtPtr(pc+1);
+ pcAdjustment = 5;
+ goto doInvocation;
+
+ case INST_INVOKE_STK1:
+ opnd = TclGetUInt1AtPtr(pc+1);
+ pcAdjustment = 2;
+
+ doInvocation:
+ {
+ char *cmdName;
+ Command *cmdPtr; /* Points to command's Command struct. */
+ int objc = opnd; /* The number of arguments. */
+ Tcl_Obj **objv; /* The array of argument objects. */
+ Tcl_Obj *objv0Ptr; /* Holds objv[0], the command name. */
+ int newPcOffset = 0;
+ /* Instruction offset computed during
+ * break, continue, error processing.
+ * Init. to avoid compiler warning. */
+ Tcl_Command cmd;
+#ifdef TCL_COMPILE_DEBUG
+ int isUnknownCmd = 0;
+ char cmdNameBuf[30];
+#endif /* TCL_COMPILE_DEBUG */
+
+ /*
+ * If the interpreter was deleted, return an error.
+ */
+
+ if (iPtr->flags & DELETED) {
+ Tcl_ResetResult(interp);
+ Tcl_AppendToObj(Tcl_GetObjResult(interp),
+ "attempt to call eval in deleted interpreter", -1);
+ Tcl_SetErrorCode(interp, "CORE", "IDELETE",
+ "attempt to call eval in deleted interpreter",
+ (char *) NULL);
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+
+ objv = &(stackPtr[stackTop - (objc-1)].o);
+ objv0Ptr = objv[0];
+ cmdName = TclGetStringFromObj(objv0Ptr, (int *) NULL);
+
+ /*
+ * Find the procedure to execute this command. If there
+ * isn't one, then see if there is a command "unknown". If
+ * so, invoke it, passing it the original command words as
+ * arguments.
+ *
+ * We convert the objv[0] object to be a CmdName object.
+ * This caches a pointer to the Command structure for the
+ * command; this pointer is held in a ResolvedCmdName
+ * structure the object's internal rep. points to.
+ */
+
+ cmd = Tcl_GetCommandFromObj(interp, objv0Ptr);
+ cmdPtr = (Command *) cmd;
+
+ /*
+ * If the command is still not found, handle it with the
+ * "unknown" proc.
+ */
+
+ if (cmdPtr == NULL) {
+ cmd = Tcl_FindCommand(interp, "unknown",
+ (Tcl_Namespace *) NULL, /*flags*/ TCL_GLOBAL_ONLY);
+ if (cmd == (Tcl_Command) NULL) {
+ Tcl_ResetResult(interp);
+ Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
+ "invalid command name \"", cmdName, "\"",
+ (char *) NULL);
+ TRACE(("%s %u => unknown proc not found: ",
+ opName[opCode], objc));
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ cmdPtr = (Command *) cmd;
+#ifdef TCL_COMPILE_DEBUG
+ isUnknownCmd = 1;
+#endif /*TCL_COMPILE_DEBUG*/
+ stackTop++; /* need room for new inserted objv[0] */
+ for (i = objc; i >= 0; i--) {
+ objv[i+1] = objv[i];
+ }
+ objc++;
+ objv[0] = Tcl_NewStringObj("unknown", -1);
+ Tcl_IncrRefCount(objv[0]);
+ }
+
+ /*
+ * Call any trace procedures.
+ */
+
+ if (iPtr->tracePtr != NULL) {
+ Trace *tracePtr, *nextTracePtr;
+
+ for (tracePtr = iPtr->tracePtr; tracePtr != NULL;
+ tracePtr = nextTracePtr) {
+ nextTracePtr = tracePtr->nextPtr;
+ if (iPtr->numLevels <= tracePtr->level) {
+ int numChars;
+ char *cmd = GetSrcInfoForPc(pc, codePtr,
+ &numChars);
+ if (cmd != NULL) {
+ DECACHE_STACK_INFO();
+ CallTraceProcedure(interp, tracePtr, cmdPtr,
+ cmd, numChars, objc, objv);
+ CACHE_STACK_INFO();
+ }
+ }
+ }
+ }
+
+ /*
+ * Finally, invoke the command's Tcl_ObjCmdProc. First reset
+ * the interpreter's string and object results to their
+ * default empty values since they could have gotten changed
+ * by earlier invocations.
+ */
+
+ Tcl_ResetResult(interp);
+
+ if (tclTraceExec >= 2) {
+ char buffer[50];
+
+ sprintf(buffer, "%d: (%u) invoking ", iPtr->numLevels,
+ (unsigned int)(pc - codePtr->codeStart));
+ Tcl_DStringAppend(&command, buffer, -1);
+
+#ifdef TCL_COMPILE_DEBUG
+ if (traceInstructions) { /* tclTraceExec == 3 */
+ strncpy(cmdNameBuf, cmdName, 20);
+ TRACE(("%s %u => call ", opName[opCode],
+ (isUnknownCmd? objc-1 : objc)));
+ } else {
+ fprintf(stdout, "%s", buffer);
+ }
+#else /* TCL_COMPILE_DEBUG */
+ fprintf(stdout, "%s", buffer);
+#endif /*TCL_COMPILE_DEBUG*/
+
+ for (i = 0; i < objc; i++) {
+ bytes = TclGetStringFromObj(objv[i], &length);
+ TclPrintSource(stdout, bytes, TclMin(length, 15));
+ fprintf(stdout, " ");
+
+ sprintf(buffer, "\"%.*s\" ", TclMin(length, 15), bytes);
+ Tcl_DStringAppend(&command, buffer, -1);
+ }
+ fprintf(stdout, "\n");
+ fflush(stdout);
+
+ Tcl_DStringFree(&command);
+ }
+
+ iPtr->cmdCount++;
+ DECACHE_STACK_INFO();
+ result = (*cmdPtr->objProc)(cmdPtr->objClientData, interp,
+ objc, objv);
+ if (Tcl_AsyncReady()) {
+ result = Tcl_AsyncInvoke(interp, result);
+ }
+ CACHE_STACK_INFO();
+
+ /*
+ * If the interpreter has a non-empty string result, the
+ * result object is either empty or stale because some
+ * procedure set interp->result directly. If so, move the
+ * string result to the result object, then reset the
+ * string result.
+ */
+
+ if (*(iPtr->result) != 0) {
+ (void) Tcl_GetObjResult(interp);
+ }
+
+ /*
+ * Pop the objc top stack elements and decrement their ref
+ * counts.
+ */
+
+ i = (stackTop - (objc-1));
+ while (i <= stackTop) {
+ valuePtr = stackPtr[i].o;
+ TclDecrRefCount(valuePtr);
+ i++;
+ }
+ stackTop -= objc;
+
+ /*
+ * Process the result of the Tcl_ObjCmdProc call.
+ */
+
+ switch (result) {
+ case TCL_OK:
+ /*
+ * Push the call's object result and continue execution
+ * with the next instruction.
+ */
+ PUSH_OBJECT(Tcl_GetObjResult(interp));
+ TRACE_WITH_OBJ(("%s %u => ...after \"%.20s\", result=",
+ opName[opCode], objc, cmdNameBuf),
+ Tcl_GetObjResult(interp));
+ ADJUST_PC(pcAdjustment);
+
+ case TCL_BREAK:
+ case TCL_CONTINUE:
+ /*
+ * The invoked command requested a break or continue.
+ * Find the closest enclosing loop or catch exception
+ * range, if any. If a loop is found, terminate its
+ * execution or skip to its next iteration. If the
+ * closest is a catch exception range, jump to its
+ * catchOffset. If no enclosing range is found, stop
+ * execution and return the TCL_BREAK or TCL_CONTINUE.
+ */
+ rangePtr = TclGetExceptionRangeForPc(pc,
+ /*catchOnly*/ 0, codePtr);
+ if (rangePtr == NULL) {
+ TRACE(("%s %u => ... after \"%.20s\", no encl. loop or catch, returning %s\n",
+ opName[opCode], objc, cmdNameBuf,
+ StringForResultCode(result)));
+ goto abnormalReturn; /* no catch exists to check */
+ }
+ switch (rangePtr->type) {
+ case LOOP_EXCEPTION_RANGE:
+ if (result == TCL_BREAK) {
+ newPcOffset = rangePtr->breakOffset;
+ } else if (rangePtr->continueOffset == -1) {
+ TRACE(("%s %u => ... after \"%.20s\", %s, loop w/o continue, checking for catch\n",
+ opName[opCode], objc, cmdNameBuf,
+ StringForResultCode(result)));
+ goto checkForCatch;
+ } else {
+ newPcOffset = rangePtr->continueOffset;
+ }
+ TRACE(("%s %u => ... after \"%.20s\", %s, range at %d, new pc %d\n",
+ opName[opCode], objc, cmdNameBuf,
+ StringForResultCode(result),
+ rangePtr->codeOffset, newPcOffset));
+ break;
+ case CATCH_EXCEPTION_RANGE:
+ TRACE(("%s %u => ... after \"%.20s\", %s...\n",
+ opName[opCode], objc, cmdNameBuf,
+ StringForResultCode(result)));
+ goto processCatch; /* it will use rangePtr */
+ default:
+ panic("TclExecuteByteCode: unrecognized ExceptionRange type %d\n", rangePtr->type);
+ }
+ result = TCL_OK;
+ pc = (codePtr->codeStart + newPcOffset);
+ continue; /* restart outer instruction loop at pc */
+
+ case TCL_ERROR:
+ /*
+ * The invoked command returned an error. Look for an
+ * enclosing catch exception range, if any.
+ */
+ TRACE_WITH_OBJ(("%s %u => ... after \"%.20s\", TCL_ERROR ",
+ opName[opCode], objc, cmdNameBuf),
+ Tcl_GetObjResult(interp));
+ goto checkForCatch;
+
+ case TCL_RETURN:
+ /*
+ * The invoked command requested that the current
+ * procedure stop execution and return. First check
+ * for an enclosing catch exception range, if any.
+ */
+ TRACE(("%s %u => ... after \"%.20s\", TCL_RETURN\n",
+ opName[opCode], objc, cmdNameBuf));
+ goto checkForCatch;
+
+ default:
+ TRACE_WITH_OBJ(("%s %u => ... after \"%.20s\", OTHER RETURN CODE %d ",
+ opName[opCode], objc, cmdNameBuf, result),
+ Tcl_GetObjResult(interp));
+ goto checkForCatch;
+ } /* end of switch on result from invoke instruction */
+ }
+
+ case INST_EVAL_STK:
+ objPtr = POP_OBJECT();
+ DECACHE_STACK_INFO();
+ result = Tcl_EvalObj(interp, objPtr);
+ CACHE_STACK_INFO();
+ if (result == TCL_OK) {
+ /*
+ * Normal return; push the eval's object result.
+ */
+
+ PUSH_OBJECT(Tcl_GetObjResult(interp));
+ TRACE_WITH_OBJ(("evalStk \"%.30s\" => ", O2S(objPtr)),
+ Tcl_GetObjResult(interp));
+ TclDecrRefCount(objPtr);
+ ADJUST_PC(1);
+ } else if ((result == TCL_BREAK) || (result == TCL_CONTINUE)) {
+ /*
+ * Find the closest enclosing loop or catch exception range,
+ * if any. If a loop is found, terminate its execution or
+ * skip to its next iteration. If the closest is a catch
+ * exception range, jump to its catchOffset. If no enclosing
+ * range is found, stop execution and return that same
+ * TCL_BREAK or TCL_CONTINUE.
+ */
+
+ int newPcOffset = 0; /* Pc offset computed during break,
+ * continue, error processing. Init.
+ * to avoid compiler warning. */
+
+ rangePtr = TclGetExceptionRangeForPc(pc, /*catchOnly*/ 0,
+ codePtr);
+ if (rangePtr == NULL) {
+ TRACE(("evalStk \"%.30s\" => no encl. loop or catch, returning %s\n",
+ O2S(objPtr), StringForResultCode(result)));
+ Tcl_DecrRefCount(objPtr);
+ goto abnormalReturn; /* no catch exists to check */
+ }
+ switch (rangePtr->type) {
+ case LOOP_EXCEPTION_RANGE:
+ if (result == TCL_BREAK) {
+ newPcOffset = rangePtr->breakOffset;
+ } else if (rangePtr->continueOffset == -1) {
+ TRACE(("evalStk \"%.30s\" => %s, loop w/o continue, checking for catch\n",
+ O2S(objPtr), StringForResultCode(result)));
+ Tcl_DecrRefCount(objPtr);
+ goto checkForCatch;
+ } else {
+ newPcOffset = rangePtr->continueOffset;
+ }
+ result = TCL_OK;
+ TRACE_WITH_OBJ(("evalStk \"%.30s\" => %s, range at %d, new pc %d ",
+ O2S(objPtr), StringForResultCode(result),
+ rangePtr->codeOffset, newPcOffset), valuePtr);
+ break;
+ case CATCH_EXCEPTION_RANGE:
+ TRACE_WITH_OBJ(("evalStk \"%.30s\" => %s ",
+ O2S(objPtr), StringForResultCode(result)),
+ valuePtr);
+ Tcl_DecrRefCount(objPtr);
+ goto processCatch; /* it will use rangePtr */
+ default:
+ panic("TclExecuteByteCode: unrecognized ExceptionRange type %d\n", rangePtr->type);
+ }
+ Tcl_DecrRefCount(objPtr);
+ pc = (codePtr->codeStart + newPcOffset);
+ continue; /* restart outer instruction loop at pc */
+ } else { /* eval returned TCL_ERROR, TCL_RETURN, unknown code */
+ TRACE_WITH_OBJ(("evalStk \"%.30s\" => ERROR: ", O2S(objPtr)),
+ Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(objPtr);
+ goto checkForCatch;
+ }
+
+ case INST_EXPR_STK:
+ objPtr = POP_OBJECT();
+ Tcl_ResetResult(interp);
+ DECACHE_STACK_INFO();
+ result = Tcl_ExprObj(interp, objPtr, &valuePtr);
+ CACHE_STACK_INFO();
+ if (result != TCL_OK) {
+ TRACE_WITH_OBJ(("exprStk \"%.30s\" => ERROR: ",
+ O2S(objPtr)), Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(objPtr);
+ goto checkForCatch;
+ }
+ stackPtr[++stackTop].o = valuePtr; /* already has right refct */
+ TRACE_WITH_OBJ(("exprStk \"%.30s\" => ", O2S(objPtr)), valuePtr);
+ TclDecrRefCount(objPtr);
+ ADJUST_PC(1);
+
+ case INST_LOAD_SCALAR4:
+ opnd = TclGetInt4AtPtr(pc+1);
+ pcAdjustment = 5;
+ goto doLoadScalar;
+
+ case INST_LOAD_SCALAR1:
+ opnd = TclGetUInt1AtPtr(pc+1);
+ pcAdjustment = 2;
+
+ doLoadScalar:
+ DECACHE_STACK_INFO();
+ valuePtr = TclGetIndexedScalar(interp, opnd,
+ /*leaveErrorMsg*/ 1);
+ CACHE_STACK_INFO();
+ if (valuePtr == NULL) {
+ TRACE_WITH_OBJ(("%s %u => ERROR: ", opName[opCode], opnd),
+ Tcl_GetObjResult(interp));
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ PUSH_OBJECT(valuePtr);
+ TRACE_WITH_OBJ(("%s %u => ", opName[opCode], opnd), valuePtr);
+ ADJUST_PC(pcAdjustment);
+
+ case INST_LOAD_SCALAR_STK:
+ namePtr = POP_OBJECT();
+ DECACHE_STACK_INFO();
+ valuePtr = Tcl_ObjGetVar2(interp, namePtr, (Tcl_Obj *) NULL,
+ TCL_LEAVE_ERR_MSG);
+ CACHE_STACK_INFO();
+ if (valuePtr == NULL) {
+ TRACE_WITH_OBJ(("loadScalarStk \"%.30s\" => ERROR: ",
+ O2S(namePtr)), Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(namePtr);
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ PUSH_OBJECT(valuePtr);
+ TRACE_WITH_OBJ(("loadScalarStk \"%.30s\" => ",
+ O2S(namePtr)), valuePtr);
+ TclDecrRefCount(namePtr);
+ ADJUST_PC(1);
+
+ case INST_LOAD_ARRAY4:
+ opnd = TclGetUInt4AtPtr(pc+1);
+ pcAdjustment = 5;
+ goto doLoadArray;
+
+ case INST_LOAD_ARRAY1:
+ opnd = TclGetUInt1AtPtr(pc+1);
+ pcAdjustment = 2;
+
+ doLoadArray:
+ {
+ Tcl_Obj *elemPtr = POP_OBJECT();
+
+ DECACHE_STACK_INFO();
+ valuePtr = TclGetElementOfIndexedArray(interp, opnd,
+ elemPtr, /*leaveErrorMsg*/ 1);
+ CACHE_STACK_INFO();
+ if (valuePtr == NULL) {
+ TRACE_WITH_OBJ(("%s %u \"%.30s\" => ERROR: ",
+ opName[opCode], opnd, O2S(elemPtr)),
+ Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(elemPtr);
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ PUSH_OBJECT(valuePtr);
+ TRACE_WITH_OBJ(("%s %u \"%.30s\" => ",
+ opName[opCode], opnd, O2S(elemPtr)), valuePtr);
+ TclDecrRefCount(elemPtr);
+ }
+ ADJUST_PC(pcAdjustment);
+
+ case INST_LOAD_ARRAY_STK:
+ {
+ Tcl_Obj *elemPtr = POP_OBJECT();
+
+ namePtr = POP_OBJECT();
+ DECACHE_STACK_INFO();
+ valuePtr = Tcl_ObjGetVar2(interp, namePtr, elemPtr,
+ TCL_LEAVE_ERR_MSG);
+ CACHE_STACK_INFO();
+ if (valuePtr == NULL) {
+ TRACE_WITH_OBJ(("loadArrayStk \"%.30s(%.30s)\" => ERROR: ",
+ O2S(namePtr), O2S(elemPtr)),
+ Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(namePtr);
+ Tcl_DecrRefCount(elemPtr);
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ PUSH_OBJECT(valuePtr);
+ TRACE_WITH_OBJ(("loadArrayStk \"%.30s(%.30s)\" => ",
+ O2S(namePtr), O2S(elemPtr)), valuePtr);
+ TclDecrRefCount(namePtr);
+ TclDecrRefCount(elemPtr);
+ }
+ ADJUST_PC(1);
+
+ case INST_LOAD_STK:
+ namePtr = POP_OBJECT();
+ DECACHE_STACK_INFO();
+ valuePtr = Tcl_ObjGetVar2(interp, namePtr, NULL,
+ TCL_PARSE_PART1|TCL_LEAVE_ERR_MSG);
+ CACHE_STACK_INFO();
+ if (valuePtr == NULL) {
+ TRACE_WITH_OBJ(("loadStk \"%.30s\" => ERROR: ",
+ O2S(namePtr)), Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(namePtr);
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ PUSH_OBJECT(valuePtr);
+ TRACE_WITH_OBJ(("loadStk \"%.30s\" => ", O2S(namePtr)),
+ valuePtr);
+ TclDecrRefCount(namePtr);
+ ADJUST_PC(1);
+
+ case INST_STORE_SCALAR4:
+ opnd = TclGetUInt4AtPtr(pc+1);
+ pcAdjustment = 5;
+ goto doStoreScalar;
+
+ case INST_STORE_SCALAR1:
+ opnd = TclGetUInt1AtPtr(pc+1);
+ pcAdjustment = 2;
+
+ doStoreScalar:
+ valuePtr = POP_OBJECT();
+ DECACHE_STACK_INFO();
+ value2Ptr = TclSetIndexedScalar(interp, opnd, valuePtr,
+ /*leaveErrorMsg*/ 1);
+ CACHE_STACK_INFO();
+ if (value2Ptr == NULL) {
+ TRACE_WITH_OBJ(("%s %u <- \"%.30s\" => ERROR: ",
+ opName[opCode], opnd, O2S(valuePtr)),
+ Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(valuePtr);
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ PUSH_OBJECT(value2Ptr);
+ TRACE_WITH_OBJ(("%s %u <- \"%.30s\" => ",
+ opName[opCode], opnd, O2S(valuePtr)), value2Ptr);
+ TclDecrRefCount(valuePtr);
+ ADJUST_PC(pcAdjustment);
+
+ case INST_STORE_SCALAR_STK:
+ valuePtr = POP_OBJECT();
+ namePtr = POP_OBJECT();
+ DECACHE_STACK_INFO();
+ value2Ptr = Tcl_ObjSetVar2(interp, namePtr, NULL, valuePtr,
+ TCL_LEAVE_ERR_MSG);
+ CACHE_STACK_INFO();
+ if (value2Ptr == NULL) {
+ TRACE_WITH_OBJ(
+ ("storeScalarStk \"%.30s\" <- \"%.30s\" => ERROR: ",
+ O2S(namePtr), O2S(valuePtr)),
+ Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(namePtr);
+ Tcl_DecrRefCount(valuePtr);
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ PUSH_OBJECT(value2Ptr);
+ TRACE_WITH_OBJ(
+ ("storeScalarStk \"%.30s\" <- \"%.30s\" => ",
+ O2S(namePtr),
+ O2S(valuePtr)),
+ value2Ptr);
+ TclDecrRefCount(namePtr);
+ TclDecrRefCount(valuePtr);
+ ADJUST_PC(1);
+
+ case INST_STORE_ARRAY4:
+ opnd = TclGetUInt4AtPtr(pc+1);
+ pcAdjustment = 5;
+ goto doStoreArray;
+
+ case INST_STORE_ARRAY1:
+ opnd = TclGetUInt1AtPtr(pc+1);
+ pcAdjustment = 2;
+
+ doStoreArray:
+ {
+ Tcl_Obj *elemPtr;
+
+ valuePtr = POP_OBJECT();
+ elemPtr = POP_OBJECT();
+ DECACHE_STACK_INFO();
+ value2Ptr = TclSetElementOfIndexedArray(interp, opnd,
+ elemPtr, valuePtr, TCL_LEAVE_ERR_MSG);
+ CACHE_STACK_INFO();
+ if (value2Ptr == NULL) {
+ TRACE_WITH_OBJ(
+ ("%s %u \"%.30s\" <- \"%.30s\" => ERROR: ",
+ opName[opCode], opnd, O2S(elemPtr),
+ O2S(valuePtr)), Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(elemPtr);
+ Tcl_DecrRefCount(valuePtr);
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ PUSH_OBJECT(value2Ptr);
+ TRACE_WITH_OBJ(("%s %u \"%.30s\" <- \"%.30s\" => ",
+ opName[opCode], opnd, O2S(elemPtr), O2S(valuePtr)),
+ value2Ptr);
+ TclDecrRefCount(elemPtr);
+ TclDecrRefCount(valuePtr);
+ }
+ ADJUST_PC(pcAdjustment);
+
+ case INST_STORE_ARRAY_STK:
+ {
+ Tcl_Obj *elemPtr;
+
+ valuePtr = POP_OBJECT();
+ elemPtr = POP_OBJECT();
+ namePtr = POP_OBJECT();
+ DECACHE_STACK_INFO();
+ value2Ptr = Tcl_ObjSetVar2(interp, namePtr, elemPtr,
+ valuePtr, TCL_LEAVE_ERR_MSG);
+ CACHE_STACK_INFO();
+ if (value2Ptr == NULL) {
+ TRACE_WITH_OBJ(("storeArrayStk \"%.30s(%.30s)\" <- \"%.30s\" => ERROR: ",
+ O2S(namePtr), O2S(elemPtr), O2S(valuePtr)),
+ Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(namePtr);
+ Tcl_DecrRefCount(elemPtr);
+ Tcl_DecrRefCount(valuePtr);
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ PUSH_OBJECT(value2Ptr);
+ TRACE_WITH_OBJ(("storeArrayStk \"%.30s(%.30s)\" <- \"%.30s\" => ",
+ O2S(namePtr), O2S(elemPtr), O2S(valuePtr)),
+ value2Ptr);
+ TclDecrRefCount(namePtr);
+ TclDecrRefCount(elemPtr);
+ TclDecrRefCount(valuePtr);
+ }
+ ADJUST_PC(1);
+
+ case INST_STORE_STK:
+ valuePtr = POP_OBJECT();
+ namePtr = POP_OBJECT();
+ DECACHE_STACK_INFO();
+ value2Ptr = Tcl_ObjSetVar2(interp, namePtr, NULL, valuePtr,
+ TCL_PARSE_PART1|TCL_LEAVE_ERR_MSG);
+ CACHE_STACK_INFO();
+ if (value2Ptr == NULL) {
+ TRACE_WITH_OBJ(("storeStk \"%.30s\" <- \"%.30s\" => ERROR: ",
+ O2S(namePtr), O2S(valuePtr)),
+ Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(namePtr);
+ Tcl_DecrRefCount(valuePtr);
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ PUSH_OBJECT(value2Ptr);
+ TRACE_WITH_OBJ(("storeStk \"%.30s\" <- \"%.30s\" => ",
+ O2S(namePtr), O2S(valuePtr)), value2Ptr);
+ TclDecrRefCount(namePtr);
+ TclDecrRefCount(valuePtr);
+ ADJUST_PC(1);
+
+ case INST_INCR_SCALAR1:
+ opnd = TclGetUInt1AtPtr(pc+1);
+ valuePtr = POP_OBJECT();
+ if (valuePtr->typePtr != &tclIntType) {
+ result = tclIntType.setFromAnyProc(interp, valuePtr);
+ if (result != TCL_OK) {
+ TRACE_WITH_OBJ(("incrScalar1 %u (by %s) => ERROR converting increment amount to int: ",
+ opnd, O2S(valuePtr)), Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(valuePtr);
+ goto checkForCatch;
+ }
+ }
+ i = valuePtr->internalRep.longValue;
+ DECACHE_STACK_INFO();
+ value2Ptr = TclIncrIndexedScalar(interp, opnd, i);
+ CACHE_STACK_INFO();
+ if (value2Ptr == NULL) {
+ TRACE_WITH_OBJ(("incrScalar1 %u (by %ld) => ERROR: ",
+ opnd, i), Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(valuePtr);
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ PUSH_OBJECT(value2Ptr);
+ TRACE_WITH_OBJ(("incrScalar1 %u (by %ld) => ", opnd, i),
+ value2Ptr);
+ TclDecrRefCount(valuePtr);
+ ADJUST_PC(2);
+
+ case INST_INCR_SCALAR_STK:
+ case INST_INCR_STK:
+ valuePtr = POP_OBJECT();
+ namePtr = POP_OBJECT();
+ if (valuePtr->typePtr != &tclIntType) {
+ result = tclIntType.setFromAnyProc(interp, valuePtr);
+ if (result != TCL_OK) {
+ TRACE_WITH_OBJ(("%s \"%.30s\" (by %s) => ERROR converting increment amount to int: ",
+ opName[opCode], O2S(namePtr), O2S(valuePtr)),
+ Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(namePtr);
+ Tcl_DecrRefCount(valuePtr);
+ goto checkForCatch;
+ }
+ }
+ i = valuePtr->internalRep.longValue;
+ DECACHE_STACK_INFO();
+ value2Ptr = TclIncrVar2(interp, namePtr, (Tcl_Obj *) NULL, i,
+ /*part1NotParsed*/ (opCode == INST_INCR_STK));
+ CACHE_STACK_INFO();
+ if (value2Ptr == NULL) {
+ TRACE_WITH_OBJ(("%s \"%.30s\" (by %ld) => ERROR: ",
+ opName[opCode], O2S(namePtr), i),
+ Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(namePtr);
+ Tcl_DecrRefCount(valuePtr);
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ PUSH_OBJECT(value2Ptr);
+ TRACE_WITH_OBJ(("%s \"%.30s\" (by %ld) => ",
+ opName[opCode], O2S(namePtr), i), value2Ptr);
+ Tcl_DecrRefCount(namePtr);
+ Tcl_DecrRefCount(valuePtr);
+ ADJUST_PC(1);
+
+ case INST_INCR_ARRAY1:
+ {
+ Tcl_Obj *elemPtr;
+
+ opnd = TclGetUInt1AtPtr(pc+1);
+ valuePtr = POP_OBJECT();
+ elemPtr = POP_OBJECT();
+ if (valuePtr->typePtr != &tclIntType) {
+ result = tclIntType.setFromAnyProc(interp, valuePtr);
+ if (result != TCL_OK) {
+ TRACE_WITH_OBJ(("incrArray1 %u \"%.30s\" (by %s) => ERROR converting increment amount to int: ",
+ opnd, O2S(elemPtr), O2S(valuePtr)),
+ Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(elemPtr);
+ Tcl_DecrRefCount(valuePtr);
+ goto checkForCatch;
+ }
+ }
+ i = valuePtr->internalRep.longValue;
+ DECACHE_STACK_INFO();
+ value2Ptr = TclIncrElementOfIndexedArray(interp, opnd,
+ elemPtr, i);
+ CACHE_STACK_INFO();
+ if (value2Ptr == NULL) {
+ TRACE_WITH_OBJ(("incrArray1 %u \"%.30s\" (by %ld) => ERROR: ",
+ opnd, O2S(elemPtr), i),
+ Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(elemPtr);
+ Tcl_DecrRefCount(valuePtr);
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ PUSH_OBJECT(value2Ptr);
+ TRACE_WITH_OBJ(("incrArray1 %u \"%.30s\" (by %ld) => ",
+ opnd, O2S(elemPtr), i), value2Ptr);
+ Tcl_DecrRefCount(elemPtr);
+ Tcl_DecrRefCount(valuePtr);
+ }
+ ADJUST_PC(2);
+
+ case INST_INCR_ARRAY_STK:
+ {
+ Tcl_Obj *elemPtr;
+
+ valuePtr = POP_OBJECT();
+ elemPtr = POP_OBJECT();
+ namePtr = POP_OBJECT();
+ if (valuePtr->typePtr != &tclIntType) {
+ result = tclIntType.setFromAnyProc(interp, valuePtr);
+ if (result != TCL_OK) {
+ TRACE_WITH_OBJ(("incrArrayStk \"%.30s(%.30s)\" (by %s) => ERROR converting increment amount to int: ",
+ O2S(namePtr), O2S(elemPtr), O2S(valuePtr)),
+ Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(namePtr);
+ Tcl_DecrRefCount(elemPtr);
+ Tcl_DecrRefCount(valuePtr);
+ goto checkForCatch;
+ }
+ }
+ i = valuePtr->internalRep.longValue;
+ DECACHE_STACK_INFO();
+ value2Ptr = TclIncrVar2(interp, namePtr, elemPtr, i,
+ /*part1NotParsed*/ 0);
+ CACHE_STACK_INFO();
+ if (value2Ptr == NULL) {
+ TRACE_WITH_OBJ(("incrArrayStk \"%.30s(%.30s)\" (by %ld) => ERROR: ",
+ O2S(namePtr), O2S(elemPtr), i),
+ Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(namePtr);
+ Tcl_DecrRefCount(elemPtr);
+ Tcl_DecrRefCount(valuePtr);
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ PUSH_OBJECT(value2Ptr);
+ TRACE_WITH_OBJ(("incrArrayStk \"%.30s(%.30s)\" (by %ld) => ",
+ O2S(namePtr), O2S(elemPtr), i), value2Ptr);
+ Tcl_DecrRefCount(namePtr);
+ Tcl_DecrRefCount(elemPtr);
+ Tcl_DecrRefCount(valuePtr);
+ }
+ ADJUST_PC(1);
+
+ case INST_INCR_SCALAR1_IMM:
+ opnd = TclGetUInt1AtPtr(pc+1);
+ i = TclGetInt1AtPtr(pc+2);
+ DECACHE_STACK_INFO();
+ value2Ptr = TclIncrIndexedScalar(interp, opnd, i);
+ CACHE_STACK_INFO();
+ if (value2Ptr == NULL) {
+ TRACE_WITH_OBJ(("incrScalar1Imm %u %ld => ERROR: ",
+ opnd, i), Tcl_GetObjResult(interp));
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ PUSH_OBJECT(value2Ptr);
+ TRACE_WITH_OBJ(("incrScalar1Imm %u %ld => ", opnd, i),
+ value2Ptr);
+ ADJUST_PC(3);
+
+ case INST_INCR_SCALAR_STK_IMM:
+ case INST_INCR_STK_IMM:
+ namePtr = POP_OBJECT();
+ i = TclGetInt1AtPtr(pc+1);
+ DECACHE_STACK_INFO();
+ value2Ptr = TclIncrVar2(interp, namePtr, (Tcl_Obj *) NULL, i,
+ /*part1NotParsed*/ (opCode == INST_INCR_STK_IMM));
+ CACHE_STACK_INFO();
+ if (value2Ptr == NULL) {
+ TRACE_WITH_OBJ(("%s \"%.30s\" %ld => ERROR: ",
+ opName[opCode], O2S(namePtr), i),
+ Tcl_GetObjResult(interp));
+ result = TCL_ERROR;
+ Tcl_DecrRefCount(namePtr);
+ goto checkForCatch;
+ }
+ PUSH_OBJECT(value2Ptr);
+ TRACE_WITH_OBJ(("%s \"%.30s\" %ld => ",
+ opName[opCode], O2S(namePtr), i), value2Ptr);
+ TclDecrRefCount(namePtr);
+ ADJUST_PC(2);
+
+ case INST_INCR_ARRAY1_IMM:
+ {
+ Tcl_Obj *elemPtr;
+
+ opnd = TclGetUInt1AtPtr(pc+1);
+ i = TclGetInt1AtPtr(pc+2);
+ elemPtr = POP_OBJECT();
+ DECACHE_STACK_INFO();
+ value2Ptr = TclIncrElementOfIndexedArray(interp, opnd,
+ elemPtr, i);
+ CACHE_STACK_INFO();
+ if (value2Ptr == NULL) {
+ TRACE_WITH_OBJ(("incrArray1Imm %u \"%.30s\" (by %ld) => ERROR: ",
+ opnd, O2S(elemPtr), i),
+ Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(elemPtr);
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ PUSH_OBJECT(value2Ptr);
+ TRACE_WITH_OBJ(("incrArray1Imm %u \"%.30s\" (by %ld) => ",
+ opnd, O2S(elemPtr), i), value2Ptr);
+ Tcl_DecrRefCount(elemPtr);
+ }
+ ADJUST_PC(3);
+
+ case INST_INCR_ARRAY_STK_IMM:
+ {
+ Tcl_Obj *elemPtr;
+
+ i = TclGetInt1AtPtr(pc+1);
+ elemPtr = POP_OBJECT();
+ namePtr = POP_OBJECT();
+ DECACHE_STACK_INFO();
+ value2Ptr = TclIncrVar2(interp, namePtr, elemPtr, i,
+ /*part1NotParsed*/ 0);
+ CACHE_STACK_INFO();
+ if (value2Ptr == NULL) {
+ TRACE_WITH_OBJ(("incrArrayStkImm \"%.30s(%.30s)\" (by %ld) => ERROR: ",
+ O2S(namePtr), O2S(elemPtr), i),
+ Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(namePtr);
+ Tcl_DecrRefCount(elemPtr);
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ PUSH_OBJECT(value2Ptr);
+ TRACE_WITH_OBJ(("incrArrayStkImm \"%.30s(%.30s)\" (by %ld) => ",
+ O2S(namePtr), O2S(elemPtr), i), value2Ptr);
+ Tcl_DecrRefCount(namePtr);
+ Tcl_DecrRefCount(elemPtr);
+ }
+ ADJUST_PC(2);
+
+ case INST_JUMP1:
+ opnd = TclGetInt1AtPtr(pc+1);
+ TRACE(("jump1 %d => new pc %u\n", opnd,
+ (unsigned int)(pc + opnd - codePtr->codeStart)));
+ ADJUST_PC(opnd);
+
+ case INST_JUMP4:
+ opnd = TclGetInt4AtPtr(pc+1);
+ TRACE(("jump4 %d => new pc %u\n", opnd,
+ (unsigned int)(pc + opnd - codePtr->codeStart)));
+ ADJUST_PC(opnd);
+
+ case INST_JUMP_TRUE4:
+ opnd = TclGetInt4AtPtr(pc+1);
+ pcAdjustment = 5;
+ goto doJumpTrue;
+
+ case INST_JUMP_TRUE1:
+ opnd = TclGetInt1AtPtr(pc+1);
+ pcAdjustment = 2;
+
+ doJumpTrue:
+ {
+ int b;
+
+ valuePtr = POP_OBJECT();
+ if (valuePtr->typePtr == &tclIntType) {
+ b = (valuePtr->internalRep.longValue != 0);
+ } else if (valuePtr->typePtr == &tclDoubleType) {
+ b = (valuePtr->internalRep.doubleValue != 0.0);
+ } else {
+ result = Tcl_GetBooleanFromObj(interp, valuePtr, &b);
+ if (result != TCL_OK) {
+ TRACE_WITH_OBJ(("%s %d => ERROR: ", opName[opCode],
+ opnd), Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(valuePtr);
+ goto checkForCatch;
+ }
+ }
+ if (b) {
+ TRACE(("%s %d => %.20s true, new pc %u\n",
+ opName[opCode], opnd, O2S(valuePtr),
+ (unsigned int)(pc+opnd - codePtr->codeStart)));
+ TclDecrRefCount(valuePtr);
+ ADJUST_PC(opnd);
+ } else {
+ TRACE(("%s %d => %.20s false\n", opName[opCode], opnd,
+ O2S(valuePtr)));
+ TclDecrRefCount(valuePtr);
+ ADJUST_PC(pcAdjustment);
+ }
+ }
+
+ case INST_JUMP_FALSE4:
+ opnd = TclGetInt4AtPtr(pc+1);
+ pcAdjustment = 5;
+ goto doJumpFalse;
+
+ case INST_JUMP_FALSE1:
+ opnd = TclGetInt1AtPtr(pc+1);
+ pcAdjustment = 2;
+
+ doJumpFalse:
+ {
+ int b;
+
+ valuePtr = POP_OBJECT();
+ if (valuePtr->typePtr == &tclIntType) {
+ b = (valuePtr->internalRep.longValue != 0);
+ } else if (valuePtr->typePtr == &tclDoubleType) {
+ b = (valuePtr->internalRep.doubleValue != 0.0);
+ } else {
+ result = Tcl_GetBooleanFromObj(interp, valuePtr, &b);
+ if (result != TCL_OK) {
+ TRACE_WITH_OBJ(("%s %d => ERROR: ", opName[opCode],
+ opnd), Tcl_GetObjResult(interp));
+ Tcl_DecrRefCount(valuePtr);
+ goto checkForCatch;
+ }
+ }
+ if (b) {
+ TRACE(("%s %d => %.20s true\n", opName[opCode], opnd,
+ O2S(valuePtr)));
+ TclDecrRefCount(valuePtr);
+ ADJUST_PC(pcAdjustment);
+ } else {
+ TRACE(("%s %d => %.20s false, new pc %u\n",
+ opName[opCode], opnd, O2S(valuePtr),
+ (unsigned int)(pc + opnd - codePtr->codeStart)));
+ TclDecrRefCount(valuePtr);
+ ADJUST_PC(opnd);
+ }
+ }
+
+ case INST_LOR:
+ case INST_LAND:
+ {
+ /*
+ * Operands must be boolean or numeric. No int->double
+ * conversions are performed.
+ */
+
+ int i1, i2;
+ int iResult;
+ char *s;
+ Tcl_ObjType *t1Ptr, *t2Ptr;
+
+ value2Ptr = POP_OBJECT();
+ valuePtr = POP_OBJECT();
+ t1Ptr = valuePtr->typePtr;
+ t2Ptr = value2Ptr->typePtr;
+
+ if ((t1Ptr == &tclIntType) || (t1Ptr == &tclBooleanType)) {
+ i1 = (valuePtr->internalRep.longValue != 0);
+ } else if (t1Ptr == &tclDoubleType) {
+ i1 = (valuePtr->internalRep.doubleValue != 0.0);
+ } else { /* FAILS IF NULL STRING REP */
+ s = Tcl_GetStringFromObj(valuePtr, (int *) NULL);
+ if (TclLooksLikeInt(s)) {
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL,
+ valuePtr, &i);
+ i1 = (i != 0);
+ } else {
+ result = Tcl_GetBooleanFromObj((Tcl_Interp *) NULL,
+ valuePtr, &i1);
+ i1 = (i1 != 0);
+ }
+ if (result != TCL_OK) {
+ TRACE(("%s \"%.20s\" => ILLEGAL TYPE %s \n",
+ opName[opCode], O2S(valuePtr),
+ (t1Ptr? t1Ptr->name : "null")));
+ IllegalExprOperandType(interp, opCode, valuePtr);
+ Tcl_DecrRefCount(valuePtr);
+ Tcl_DecrRefCount(value2Ptr);
+ goto checkForCatch;
+ }
+ }
+
+ if ((t2Ptr == &tclIntType) || (t2Ptr == &tclBooleanType)) {
+ i2 = (value2Ptr->internalRep.longValue != 0);
+ } else if (t2Ptr == &tclDoubleType) {
+ i2 = (value2Ptr->internalRep.doubleValue != 0.0);
+ } else { /* FAILS IF NULL STRING REP */
+ s = Tcl_GetStringFromObj(value2Ptr, (int *) NULL);
+ if (TclLooksLikeInt(s)) {
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL,
+ value2Ptr, &i);
+ i2 = (i != 0);
+ } else {
+ result = Tcl_GetBooleanFromObj((Tcl_Interp *) NULL,
+ value2Ptr, &i2);
+ i2 = (i2 != 0);
+ }
+ if (result != TCL_OK) {
+ TRACE(("%s \"%.20s\" => ILLEGAL TYPE %s \n",
+ opName[opCode], O2S(value2Ptr),
+ (t2Ptr? t2Ptr->name : "null")));
+ IllegalExprOperandType(interp, opCode, value2Ptr);
+ Tcl_DecrRefCount(valuePtr);
+ Tcl_DecrRefCount(value2Ptr);
+ goto checkForCatch;
+ }
+ }
+
+ /*
+ * Reuse the valuePtr object already on stack if possible.
+ */
+
+ if (opCode == INST_LOR) {
+ iResult = (i1 || i2);
+ } else {
+ iResult = (i1 && i2);
+ }
+ if (Tcl_IsShared(valuePtr)) {
+ PUSH_OBJECT(Tcl_NewLongObj(iResult));
+ TRACE(("%s %.20s %.20s => %d\n", opName[opCode],
+ O2S(valuePtr), O2S(value2Ptr), iResult));
+ TclDecrRefCount(valuePtr);
+ } else { /* reuse the valuePtr object */
+ TRACE(("%s %.20s %.20s => %d\n",
+ opName[opCode], /* NB: stack top is off by 1 */
+ O2S(valuePtr), O2S(value2Ptr), iResult));
+ Tcl_SetLongObj(valuePtr, iResult);
+ ++stackTop; /* valuePtr now on stk top has right r.c. */
+ }
+ TclDecrRefCount(value2Ptr);
+ }
+ ADJUST_PC(1);
+
+ case INST_EQ:
+ case INST_NEQ:
+ case INST_LT:
+ case INST_GT:
+ case INST_LE:
+ case INST_GE:
+ {
+ /*
+ * Any type is allowed but the two operands must have the
+ * same type. We will compute value op value2.
+ */
+
+ Tcl_ObjType *t1Ptr, *t2Ptr;
+ char *s1 = NULL; /* Init. avoids compiler warning. */
+ char *s2 = NULL; /* Init. avoids compiler warning. */
+ long i2 = 0; /* Init. avoids compiler warning. */
+ double d1 = 0.0; /* Init. avoids compiler warning. */
+ double d2 = 0.0; /* Init. avoids compiler warning. */
+ long iResult = 0; /* Init. avoids compiler warning. */
+
+ value2Ptr = POP_OBJECT();
+ valuePtr = POP_OBJECT();
+ t1Ptr = valuePtr->typePtr;
+ t2Ptr = value2Ptr->typePtr;
+
+ if ((t1Ptr != &tclIntType) && (t1Ptr != &tclDoubleType)) {
+ s1 = Tcl_GetStringFromObj(valuePtr, &length);
+ if (TclLooksLikeInt(s1)) { /* FAILS IF NULLS */
+ (void) Tcl_GetLongFromObj((Tcl_Interp *) NULL,
+ valuePtr, &i);
+ } else {
+ (void) Tcl_GetDoubleFromObj((Tcl_Interp *) NULL,
+ valuePtr, &d1);
+ }
+ t1Ptr = valuePtr->typePtr;
+ }
+ if ((t2Ptr != &tclIntType) && (t2Ptr != &tclDoubleType)) {
+ s2 = Tcl_GetStringFromObj(value2Ptr, &length);
+ if (TclLooksLikeInt(s2)) { /* FAILS IF NULLS */
+ (void) Tcl_GetLongFromObj((Tcl_Interp *) NULL,
+ value2Ptr, &i2);
+ } else {
+ (void) Tcl_GetDoubleFromObj((Tcl_Interp *) NULL,
+ value2Ptr, &d2);
+ }
+ t2Ptr = value2Ptr->typePtr;
+ }
+
+ if (((t1Ptr != &tclIntType) && (t1Ptr != &tclDoubleType))
+ || ((t2Ptr != &tclIntType) && (t2Ptr != &tclDoubleType))) {
+ /*
+ * One operand is not numeric. Compare as strings.
+ * THIS FAILS IF AN OBJECT'S STRING REP CONTAINS NULLS.
+ */
+ int cmpValue;
+ s1 = TclGetStringFromObj(valuePtr, &length);
+ s2 = TclGetStringFromObj(value2Ptr, &length);
+ cmpValue = strcmp(s1, s2);
+ switch (opCode) {
+ case INST_EQ:
+ iResult = (cmpValue == 0);
+ break;
+ case INST_NEQ:
+ iResult = (cmpValue != 0);
+ break;
+ case INST_LT:
+ iResult = (cmpValue < 0);
+ break;
+ case INST_GT:
+ iResult = (cmpValue > 0);
+ break;
+ case INST_LE:
+ iResult = (cmpValue <= 0);
+ break;
+ case INST_GE:
+ iResult = (cmpValue >= 0);
+ break;
+ }
+ } else if ((t1Ptr == &tclDoubleType)
+ || (t2Ptr == &tclDoubleType)) {
+ /*
+ * Compare as doubles.
+ */
+ if (t1Ptr == &tclDoubleType) {
+ d1 = valuePtr->internalRep.doubleValue;
+ if (t2Ptr == &tclIntType) {
+ d2 = value2Ptr->internalRep.longValue;
+ } else {
+ d2 = value2Ptr->internalRep.doubleValue;
+ }
+ } else { /* t1Ptr is int, t2Ptr is double */
+ d1 = valuePtr->internalRep.longValue;
+ d2 = value2Ptr->internalRep.doubleValue;
+ }
+ switch (opCode) {
+ case INST_EQ:
+ iResult = d1 == d2;
+ break;
+ case INST_NEQ:
+ iResult = d1 != d2;
+ break;
+ case INST_LT:
+ iResult = d1 < d2;
+ break;
+ case INST_GT:
+ iResult = d1 > d2;
+ break;
+ case INST_LE:
+ iResult = d1 <= d2;
+ break;
+ case INST_GE:
+ iResult = d1 >= d2;
+ break;
+ }
+ } else {
+ /*
+ * Compare as ints.
+ */
+ i = valuePtr->internalRep.longValue;
+ i2 = value2Ptr->internalRep.longValue;
+ switch (opCode) {
+ case INST_EQ:
+ iResult = i == i2;
+ break;
+ case INST_NEQ:
+ iResult = i != i2;
+ break;
+ case INST_LT:
+ iResult = i < i2;
+ break;
+ case INST_GT:
+ iResult = i > i2;
+ break;
+ case INST_LE:
+ iResult = i <= i2;
+ break;
+ case INST_GE:
+ iResult = i >= i2;
+ break;
+ }
+ }
+
+ /*
+ * Reuse the valuePtr object already on stack if possible.
+ */
+
+ if (Tcl_IsShared(valuePtr)) {
+ PUSH_OBJECT(Tcl_NewLongObj(iResult));
+ TRACE(("%s %.20s %.20s => %ld\n", opName[opCode],
+ O2S(valuePtr), O2S(value2Ptr), iResult));
+ TclDecrRefCount(valuePtr);
+ } else { /* reuse the valuePtr object */
+ TRACE(("%s %.20s %.20s => %ld\n",
+ opName[opCode], /* NB: stack top is off by 1 */
+ O2S(valuePtr), O2S(value2Ptr), iResult));
+ Tcl_SetLongObj(valuePtr, iResult);
+ ++stackTop; /* valuePtr now on stk top has right r.c. */
+ }
+ TclDecrRefCount(value2Ptr);
+ }
+ ADJUST_PC(1);
+
+ case INST_MOD:
+ case INST_LSHIFT:
+ case INST_RSHIFT:
+ case INST_BITOR:
+ case INST_BITXOR:
+ case INST_BITAND:
+ {
+ /*
+ * Only integers are allowed. We compute value op value2.
+ */
+
+ long i2, rem, negative;
+ long iResult = 0; /* Init. avoids compiler warning. */
+
+ value2Ptr = POP_OBJECT();
+ valuePtr = POP_OBJECT();
+ if (valuePtr->typePtr == &tclIntType) {
+ i = valuePtr->internalRep.longValue;
+ } else { /* try to convert to int */
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL,
+ valuePtr, &i);
+ if (result != TCL_OK) {
+ TRACE(("%s %.20s %.20s => ILLEGAL 1st TYPE %s\n",
+ opName[opCode], O2S(valuePtr), O2S(value2Ptr),
+ (valuePtr->typePtr?
+ valuePtr->typePtr->name : "null")));
+ IllegalExprOperandType(interp, opCode, valuePtr);
+ Tcl_DecrRefCount(valuePtr);
+ Tcl_DecrRefCount(value2Ptr);
+ goto checkForCatch;
+ }
+ }
+ if (value2Ptr->typePtr == &tclIntType) {
+ i2 = value2Ptr->internalRep.longValue;
+ } else {
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL,
+ value2Ptr, &i2);
+ if (result != TCL_OK) {
+ TRACE(("%s %.20s %.20s => ILLEGAL 2nd TYPE %s\n",
+ opName[opCode], O2S(valuePtr), O2S(value2Ptr),
+ (value2Ptr->typePtr?
+ value2Ptr->typePtr->name : "null")));
+ IllegalExprOperandType(interp, opCode, value2Ptr);
+ Tcl_DecrRefCount(valuePtr);
+ Tcl_DecrRefCount(value2Ptr);
+ goto checkForCatch;
+ }
+ }
+
+ switch (opCode) {
+ case INST_MOD:
+ /*
+ * This code is tricky: C doesn't guarantee much about
+ * the quotient or remainder, but Tcl does. The
+ * remainder always has the same sign as the divisor and
+ * a smaller absolute value.
+ */
+ if (i2 == 0) {
+ TRACE(("mod %ld %ld => DIVIDE BY ZERO\n", i, i2));
+ Tcl_DecrRefCount(valuePtr);
+ Tcl_DecrRefCount(value2Ptr);
+ goto divideByZero;
+ }
+ negative = 0;
+ if (i2 < 0) {
+ i2 = -i2;
+ i = -i;
+ negative = 1;
+ }
+ rem = i % i2;
+ if (rem < 0) {
+ rem += i2;
+ }
+ if (negative) {
+ rem = -rem;
+ }
+ iResult = rem;
+ break;
+ case INST_LSHIFT:
+ iResult = i << i2;
+ break;
+ case INST_RSHIFT:
+ /*
+ * The following code is a bit tricky: it ensures that
+ * right shifts propagate the sign bit even on machines
+ * where ">>" won't do it by default.
+ */
+ if (i < 0) {
+ iResult = ~((~i) >> i2);
+ } else {
+ iResult = i >> i2;
+ }
+ break;
+ case INST_BITOR:
+ iResult = i | i2;
+ break;
+ case INST_BITXOR:
+ iResult = i ^ i2;
+ break;
+ case INST_BITAND:
+ iResult = i & i2;
+ break;
+ }
+
+ /*
+ * Reuse the valuePtr object already on stack if possible.
+ */
+
+ if (Tcl_IsShared(valuePtr)) {
+ PUSH_OBJECT(Tcl_NewLongObj(iResult));
+ TRACE(("%s %ld %ld => %ld\n", opName[opCode], i, i2,
+ iResult));
+ TclDecrRefCount(valuePtr);
+ } else { /* reuse the valuePtr object */
+ TRACE(("%s %ld %ld => %ld\n", opName[opCode], i, i2,
+ iResult)); /* NB: stack top is off by 1 */
+ Tcl_SetLongObj(valuePtr, iResult);
+ ++stackTop; /* valuePtr now on stk top has right r.c. */
+ }
+ TclDecrRefCount(value2Ptr);
+ }
+ ADJUST_PC(1);
+
+ case INST_ADD:
+ case INST_SUB:
+ case INST_MULT:
+ case INST_DIV:
+ {
+ /*
+ * Operands must be numeric and ints get converted to floats
+ * if necessary. We compute value op value2.
+ */
+
+ Tcl_ObjType *t1Ptr, *t2Ptr;
+ long i2, quot, rem;
+ double d1, d2;
+ long iResult = 0; /* Init. avoids compiler warning. */
+ double dResult = 0.0; /* Init. avoids compiler warning. */
+ int doDouble = 0; /* 1 if doing floating arithmetic */
+
+ value2Ptr = POP_OBJECT();
+ valuePtr = POP_OBJECT();
+ t1Ptr = valuePtr->typePtr;
+ t2Ptr = value2Ptr->typePtr;
+
+ if (t1Ptr == &tclIntType) {
+ i = valuePtr->internalRep.longValue;
+ } else if (t1Ptr == &tclDoubleType) {
+ d1 = valuePtr->internalRep.doubleValue;
+ } else { /* try to convert; FAILS IF NULLS */
+ char *s = Tcl_GetStringFromObj(valuePtr, &length);
+ if (TclLooksLikeInt(s)) {
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL,
+ valuePtr, &i);
+ } else {
+ result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL,
+ valuePtr, &d1);
+ }
+ if (result != TCL_OK) {
+ TRACE(("%s %.20s %.20s => ILLEGAL 1st TYPE %s\n",
+ opName[opCode], s, O2S(value2Ptr),
+ (valuePtr->typePtr?
+ valuePtr->typePtr->name : "null")));
+ IllegalExprOperandType(interp, opCode, valuePtr);
+ Tcl_DecrRefCount(valuePtr);
+ Tcl_DecrRefCount(value2Ptr);
+ goto checkForCatch;
+ }
+ t1Ptr = valuePtr->typePtr;
+ }
+
+ if (t2Ptr == &tclIntType) {
+ i2 = value2Ptr->internalRep.longValue;
+ } else if (t2Ptr == &tclDoubleType) {
+ d2 = value2Ptr->internalRep.doubleValue;
+ } else { /* try to convert; FAILS IF NULLS */
+ char *s = Tcl_GetStringFromObj(value2Ptr, &length);
+ if (TclLooksLikeInt(s)) {
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL,
+ value2Ptr, &i2);
+ } else {
+ result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL,
+ value2Ptr, &d2);
+ }
+ if (result != TCL_OK) {
+ TRACE(("%s %.20s %.20s => ILLEGAL 2nd TYPE %s\n",
+ opName[opCode], O2S(valuePtr), s,
+ (value2Ptr->typePtr?
+ value2Ptr->typePtr->name : "null")));
+ IllegalExprOperandType(interp, opCode, value2Ptr);
+ Tcl_DecrRefCount(valuePtr);
+ Tcl_DecrRefCount(value2Ptr);
+ goto checkForCatch;
+ }
+ t2Ptr = value2Ptr->typePtr;
+ }
+
+ if ((t1Ptr == &tclDoubleType) || (t2Ptr == &tclDoubleType)) {
+ /*
+ * Do double arithmetic.
+ */
+ doDouble = 1;
+ if (t1Ptr == &tclIntType) {
+ d1 = i; /* promote value 1 to double */
+ } else if (t2Ptr == &tclIntType) {
+ d2 = i2; /* promote value 2 to double */
+ }
+ 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:
+ if (d2 == 0.0) {
+ TRACE(("div %.6g %.6g => DIVIDE BY ZERO\n",
+ d1, d2));
+ Tcl_DecrRefCount(valuePtr);
+ Tcl_DecrRefCount(value2Ptr);
+ goto divideByZero;
+ }
+ dResult = d1 / d2;
+ break;
+ }
+
+ /*
+ * Check now for IEEE floating-point error.
+ */
+
+ if (IS_NAN(dResult) || IS_INF(dResult)) {
+ TRACE(("%s %.20s %.20s => IEEE FLOATING PT ERROR\n",
+ opName[opCode], O2S(valuePtr), O2S(value2Ptr)));
+ TclExprFloatError(interp, dResult);
+ result = TCL_ERROR;
+ Tcl_DecrRefCount(valuePtr);
+ Tcl_DecrRefCount(value2Ptr);
+ goto checkForCatch;
+ }
+ } else {
+ /*
+ * Do integer arithmetic.
+ */
+ switch (opCode) {
+ case INST_ADD:
+ iResult = i + i2;
+ break;
+ case INST_SUB:
+ iResult = i - i2;
+ break;
+ case INST_MULT:
+ iResult = i * i2;
+ break;
+ case INST_DIV:
+ /*
+ * This code is tricky: C doesn't guarantee much
+ * about the quotient or remainder, but Tcl does.
+ * The remainder always has the same sign as the
+ * divisor and a smaller absolute value.
+ */
+ if (i2 == 0) {
+ TRACE(("div %ld %ld => DIVIDE BY ZERO\n",
+ i, i2));
+ Tcl_DecrRefCount(valuePtr);
+ Tcl_DecrRefCount(value2Ptr);
+ goto divideByZero;
+ }
+ if (i2 < 0) {
+ i2 = -i2;
+ i = -i;
+ }
+ quot = i / i2;
+ rem = i % i2;
+ if (rem < 0) {
+ quot -= 1;
+ }
+ iResult = quot;
+ break;
+ }
+ }
+
+ /*
+ * Reuse the valuePtr object already on stack if possible.
+ */
+
+ if (Tcl_IsShared(valuePtr)) {
+ if (doDouble) {
+ PUSH_OBJECT(Tcl_NewDoubleObj(dResult));
+ TRACE(("%s %.6g %.6g => %.6g\n", opName[opCode],
+ d1, d2, dResult));
+ } else {
+ PUSH_OBJECT(Tcl_NewLongObj(iResult));
+ TRACE(("%s %ld %ld => %ld\n", opName[opCode],
+ i, i2, iResult));
+ }
+ TclDecrRefCount(valuePtr);
+ } else { /* reuse the valuePtr object */
+ if (doDouble) { /* NB: stack top is off by 1 */
+ TRACE(("%s %.6g %.6g => %.6g\n", opName[opCode],
+ d1, d2, dResult));
+ Tcl_SetDoubleObj(valuePtr, dResult);
+ } else {
+ TRACE(("%s %ld %ld => %ld\n", opName[opCode],
+ i, i2, iResult));
+ Tcl_SetLongObj(valuePtr, iResult);
+ }
+ ++stackTop; /* valuePtr now on stk top has right r.c. */
+ }
+ TclDecrRefCount(value2Ptr);
+ }
+ ADJUST_PC(1);
+
+ case INST_UPLUS:
+ {
+ /*
+ * Operand must be numeric.
+ */
+
+ double d;
+ Tcl_ObjType *tPtr;
+
+ valuePtr = stackPtr[stackTop].o;
+ tPtr = valuePtr->typePtr;
+ if ((tPtr != &tclIntType) && (tPtr != &tclDoubleType)) {
+ char *s = Tcl_GetStringFromObj(valuePtr, (int *) NULL);
+ if (TclLooksLikeInt(s)) { /* FAILS IF NULLS */
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL,
+ valuePtr, &i);
+ } else {
+ result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL,
+ valuePtr, &d);
+ }
+ if (result != TCL_OK) {
+ TRACE(("%s \"%.20s\" => ILLEGAL TYPE %s \n",
+ opName[opCode], s,
+ (tPtr? tPtr->name : "null")));
+ IllegalExprOperandType(interp, opCode, valuePtr);
+ goto checkForCatch;
+ }
+ }
+ TRACE_WITH_OBJ(("uplus %s => ", O2S(valuePtr)), valuePtr);
+ }
+ ADJUST_PC(1);
+
+ case INST_UMINUS:
+ case INST_LNOT:
+ {
+ /*
+ * The operand must be numeric. If the operand object is
+ * unshared modify it directly, otherwise create a copy to
+ * modify: this is "copy on write". free any old string
+ * representation since it is now invalid.
+ */
+
+ double d;
+ Tcl_ObjType *tPtr;
+
+ valuePtr = POP_OBJECT();
+ tPtr = valuePtr->typePtr;
+ if ((tPtr != &tclIntType) && (tPtr != &tclDoubleType)) {
+ char *s = Tcl_GetStringFromObj(valuePtr, (int *) NULL);
+ if (TclLooksLikeInt(s)) { /* FAILS IF NULLS */
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL,
+ valuePtr, &i);
+ } else {
+ result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL,
+ valuePtr, &d);
+ }
+ if (result != TCL_OK) {
+ TRACE(("%s \"%.20s\" => ILLEGAL TYPE %s\n",
+ opName[opCode], s,
+ (tPtr? tPtr->name : "null")));
+ IllegalExprOperandType(interp, opCode, valuePtr);
+ Tcl_DecrRefCount(valuePtr);
+ goto checkForCatch;
+ }
+ tPtr = valuePtr->typePtr;
+ }
+
+ if (Tcl_IsShared(valuePtr)) {
+ /*
+ * Create a new object.
+ */
+ if (tPtr == &tclIntType) {
+ i = valuePtr->internalRep.longValue;
+ objPtr = Tcl_NewLongObj(
+ (opCode == INST_UMINUS)? -i : !i);
+ TRACE_WITH_OBJ(("%s %ld => ", opName[opCode], i),
+ objPtr); /* NB: stack top is off by 1 */
+ } else {
+ d = valuePtr->internalRep.doubleValue;
+ if (opCode == INST_UMINUS) {
+ objPtr = Tcl_NewDoubleObj(-d);
+ } else {
+ /*
+ * Should be able to use "!d", but apparently
+ * some compilers can't handle it.
+ */
+ objPtr = Tcl_NewLongObj((d==0.0)? 1 : 0);
+ }
+ TRACE_WITH_OBJ(("%s %.6g => ", opName[opCode], d),
+ objPtr); /* NB: stack top is off by 1 */
+ }
+ PUSH_OBJECT(objPtr);
+ TclDecrRefCount(valuePtr);
+ } else {
+ /*
+ * valuePtr is unshared. Modify it directly.
+ */
+ if (tPtr == &tclIntType) {
+ i = valuePtr->internalRep.longValue;
+ Tcl_SetLongObj(valuePtr,
+ (opCode == INST_UMINUS)? -i : !i);
+ TRACE_WITH_OBJ(("%s %ld => ", opName[opCode], i),
+ valuePtr); /* NB: stack top is off by 1 */
+ } else {
+ d = valuePtr->internalRep.doubleValue;
+ if (opCode == INST_UMINUS) {
+ Tcl_SetDoubleObj(valuePtr, -d);
+ } else {
+ /*
+ * Should be able to use "!d", but apparently
+ * some compilers can't handle it.
+ */
+ Tcl_SetLongObj(valuePtr, (d==0.0)? 1 : 0);
+ }
+ TRACE_WITH_OBJ(("%s %.6g => ", opName[opCode], d),
+ valuePtr); /* NB: stack top is off by 1 */
+ }
+ ++stackTop; /* valuePtr now on stk top has right r.c. */
+ }
+ }
+ ADJUST_PC(1);
+
+ case INST_BITNOT:
+ {
+ /*
+ * The operand must be an integer. If the operand object is
+ * unshared modify it directly, otherwise modify a copy.
+ * Free any old string representation since it is now
+ * invalid.
+ */
+
+ Tcl_ObjType *tPtr;
+
+ valuePtr = POP_OBJECT();
+ tPtr = valuePtr->typePtr;
+ if (tPtr != &tclIntType) {
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL,
+ valuePtr, &i);
+ if (result != TCL_OK) { /* try to convert to double */
+ TRACE(("bitnot \"%.20s\" => ILLEGAL TYPE %s\n",
+ O2S(valuePtr), (tPtr? tPtr->name : "null")));
+ IllegalExprOperandType(interp, opCode, valuePtr);
+ Tcl_DecrRefCount(valuePtr);
+ goto checkForCatch;
+ }
+ }
+
+ i = valuePtr->internalRep.longValue;
+ if (Tcl_IsShared(valuePtr)) {
+ PUSH_OBJECT(Tcl_NewLongObj(~i));
+ TRACE(("bitnot 0x%lx => (%lu)\n", i, ~i));
+ TclDecrRefCount(valuePtr);
+ } else {
+ /*
+ * valuePtr is unshared. Modify it directly.
+ */
+ Tcl_SetLongObj(valuePtr, ~i);
+ ++stackTop; /* valuePtr now on stk top has right r.c. */
+ TRACE(("bitnot 0x%lx => (%lu)\n", i, ~i));
+ }
+ }
+ ADJUST_PC(1);
+
+ case INST_CALL_BUILTIN_FUNC1:
+ opnd = TclGetUInt1AtPtr(pc+1);
+ {
+ /*
+ * Call one of the built-in Tcl math functions.
+ */
+
+ BuiltinFunc *mathFuncPtr;
+
+ if ((opnd < 0) || (opnd > LAST_BUILTIN_FUNC)) {
+ TRACE(("UNRECOGNIZED BUILTIN FUNC CODE %d\n", opnd));
+ panic("TclExecuteByteCode: unrecognized builtin function code %d", opnd);
+ }
+ mathFuncPtr = &(builtinFuncTable[opnd]);
+ DECACHE_STACK_INFO();
+ tcl_MathInProgress++;
+ result = (*mathFuncPtr->proc)(interp, eePtr,
+ mathFuncPtr->clientData);
+ tcl_MathInProgress--;
+ CACHE_STACK_INFO();
+ if (result != TCL_OK) {
+ goto checkForCatch;
+ }
+ TRACE_WITH_OBJ(("callBuiltinFunc1 %d => ", opnd),
+ stackPtr[stackTop].o);
+ }
+ ADJUST_PC(2);
+
+ case INST_CALL_FUNC1:
+ opnd = TclGetUInt1AtPtr(pc+1);
+ {
+ /*
+ * Call a non-builtin Tcl math function previously
+ * registered by a call to Tcl_CreateMathFunc.
+ */
+
+ int objc = opnd; /* Number of arguments. The function name
+ * is the 0-th argument. */
+ Tcl_Obj **objv; /* The array of arguments. The function
+ * name is objv[0]. */
+
+ objv = &(stackPtr[stackTop - (objc-1)].o); /* "objv[0]" */
+ DECACHE_STACK_INFO();
+ tcl_MathInProgress++;
+ result = ExprCallMathFunc(interp, eePtr, objc, objv);
+ tcl_MathInProgress--;
+ CACHE_STACK_INFO();
+ if (result != TCL_OK) {
+ goto checkForCatch;
+ }
+ TRACE_WITH_OBJ(("callFunc1 %d => ", objc),
+ stackPtr[stackTop].o);
+ ADJUST_PC(2);
+ }
+
+ case INST_TRY_CVT_TO_NUMERIC:
+ {
+ /*
+ * Try to convert the topmost stack object to an int or
+ * double object. This is done in order to support Tcl's
+ * policy of interpreting operands if at all possible as
+ * first integers, else floating-point numbers.
+ */
+
+ double d;
+ char *s;
+ Tcl_ObjType *tPtr;
+ int converted, shared;
+
+ valuePtr = stackPtr[stackTop].o;
+ tPtr = valuePtr->typePtr;
+ converted = 0;
+ if ((tPtr != &tclIntType) && (tPtr != &tclDoubleType)) {
+ s = Tcl_GetStringFromObj(valuePtr, (int *) NULL);
+ if (TclLooksLikeInt(s)) { /* FAILS IF NULLS */
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL,
+ valuePtr, &i);
+ } else {
+ result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL,
+ valuePtr, &d);
+ }
+ if (result == TCL_OK) {
+ converted = 1;
+ }
+ result = TCL_OK; /* reset the result variable */
+ tPtr = valuePtr->typePtr;
+ }
+
+ /*
+ * Ensure that the topmost stack object, if numeric, 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. Also check if there has been an IEEE
+ * floating point error.
+ */
+
+ if ((tPtr == &tclIntType) || (tPtr == &tclDoubleType)) {
+ shared = 0;
+ if (Tcl_IsShared(valuePtr)) {
+ shared = 1;
+ if (tPtr == &tclIntType) {
+ i = valuePtr->internalRep.longValue;
+ objPtr = Tcl_NewLongObj(i);
+ } else {
+ d = valuePtr->internalRep.doubleValue;
+ objPtr = Tcl_NewDoubleObj(d);
+ }
+ Tcl_IncrRefCount(objPtr);
+ TclDecrRefCount(valuePtr);
+ valuePtr = objPtr;
+ tPtr = valuePtr->typePtr;
+ } else {
+ Tcl_InvalidateStringRep(valuePtr);
+ }
+ stackPtr[stackTop].o = valuePtr;
+
+ if (tPtr == &tclDoubleType) {
+ d = valuePtr->internalRep.doubleValue;
+ if (IS_NAN(d) || IS_INF(d)) {
+ TRACE(("tryCvtToNumeric \"%.20s\" => IEEE FLOATING PT ERROR\n",
+ O2S(valuePtr)));
+ TclExprFloatError(interp, d);
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ }
+ shared = shared; /* lint, shared not used. */
+ converted = converted; /* lint, converted not used. */
+ TRACE(("tryCvtToNumeric \"%.20s\" => numeric, %s, %s\n",
+ O2S(valuePtr),
+ (converted? "converted" : "not converted"),
+ (shared? "shared" : "not shared")));
+ } else {
+ TRACE(("tryCvtToNumeric \"%.20s\" => not numeric\n",
+ O2S(valuePtr)));
+ }
+ }
+ ADJUST_PC(1);
+
+ case INST_BREAK:
+ /*
+ * First reset the interpreter's result. Then find the closest
+ * enclosing loop or catch exception range, if any. If a loop is
+ * found, terminate its execution. If the closest is a catch
+ * exception range, jump to its catchOffset. If no enclosing
+ * range is found, stop execution and return TCL_BREAK.
+ */
+
+ Tcl_ResetResult(interp);
+ rangePtr = TclGetExceptionRangeForPc(pc, /*catchOnly*/ 0,
+ codePtr);
+ if (rangePtr == NULL) {
+ TRACE(("break => no encl. loop or catch, returning TCL_BREAK\n"));
+ result = TCL_BREAK;
+ goto abnormalReturn; /* no catch exists to check */
+ }
+ switch (rangePtr->type) {
+ case LOOP_EXCEPTION_RANGE:
+ result = TCL_OK;
+ TRACE(("break => range at %d, new pc %d\n",
+ rangePtr->codeOffset, rangePtr->breakOffset));
+ break;
+ case CATCH_EXCEPTION_RANGE:
+ result = TCL_BREAK;
+ TRACE(("break => ...\n"));
+ goto processCatch; /* it will use rangePtr */
+ default:
+ panic("TclExecuteByteCode: unrecognized ExceptionRange type %d\n", rangePtr->type);
+ }
+ pc = (codePtr->codeStart + rangePtr->breakOffset);
+ continue; /* restart outer instruction loop at pc */
+
+ case INST_CONTINUE:
+ /*
+ * Find the closest enclosing loop or catch exception range,
+ * if any. If a loop is found, skip to its next iteration.
+ * If the closest is a catch exception range, jump to its
+ * catchOffset. If no enclosing range is found, stop
+ * execution and return TCL_CONTINUE.
+ */
+
+ Tcl_ResetResult(interp);
+ rangePtr = TclGetExceptionRangeForPc(pc, /*catchOnly*/ 0,
+ codePtr);
+ if (rangePtr == NULL) {
+ TRACE(("continue => no encl. loop or catch, returning TCL_CONTINUE\n"));
+ result = TCL_CONTINUE;
+ goto abnormalReturn;
+ }
+ switch (rangePtr->type) {
+ case LOOP_EXCEPTION_RANGE:
+ if (rangePtr->continueOffset == -1) {
+ TRACE(("continue => loop w/o continue, checking for catch\n"));
+ goto checkForCatch;
+ } else {
+ result = TCL_OK;
+ TRACE(("continue => range at %d, new pc %d\n",
+ rangePtr->codeOffset, rangePtr->continueOffset));
+ }
+ break;
+ case CATCH_EXCEPTION_RANGE:
+ result = TCL_CONTINUE;
+ TRACE(("continue => ...\n"));
+ goto processCatch; /* it will use rangePtr */
+ default:
+ panic("TclExecuteByteCode: unrecognized ExceptionRange type %d\n", rangePtr->type);
+ }
+ pc = (codePtr->codeStart + rangePtr->continueOffset);
+ continue; /* restart outer instruction loop at pc */
+
+ case INST_FOREACH_START4:
+ opnd = TclGetUInt4AtPtr(pc+1);
+ {
+ /*
+ * Initialize the temporary local var that holds the count
+ * of the number of iterations of the loop body to -1.
+ */
+
+ ForeachInfo *infoPtr = (ForeachInfo *)
+ codePtr->auxDataArrayPtr[opnd].clientData;
+ int iterTmpIndex = infoPtr->loopIterNumTmp;
+ CallFrame *varFramePtr = iPtr->varFramePtr;
+ Var *compiledLocals = varFramePtr->compiledLocals;
+ Var *iterVarPtr;
+ Tcl_Obj *oldValuePtr;
+
+ iterVarPtr = &(compiledLocals[iterTmpIndex]);
+ oldValuePtr = iterVarPtr->value.objPtr;
+ if (oldValuePtr == NULL) {
+ iterVarPtr->value.objPtr = Tcl_NewLongObj(-1);
+ Tcl_IncrRefCount(iterVarPtr->value.objPtr);
+ if (oldValuePtr != NULL) {
+ Tcl_DecrRefCount(oldValuePtr);
+ }
+ } else {
+ Tcl_SetLongObj(oldValuePtr, -1);
+ }
+ TclSetVarScalar(iterVarPtr);
+ TclClearVarUndefined(iterVarPtr);
+ TRACE(("foreach_start4 %u => loop iter count temp %d\n",
+ opnd, iterTmpIndex));
+ }
+ ADJUST_PC(5);
+
+ case INST_FOREACH_STEP4:
+ opnd = TclGetUInt4AtPtr(pc+1);
+ {
+ /*
+ * "Step" a foreach loop (i.e., begin its next iteration) by
+ * assigning the next value list element to each loop var.
+ */
+
+ ForeachInfo *infoPtr = (ForeachInfo *)
+ codePtr->auxDataArrayPtr[opnd].clientData;
+ ForeachVarList *varListPtr;
+ int numLists = infoPtr->numLists;
+ int iterTmpIndex = infoPtr->loopIterNumTmp;
+ CallFrame *varFramePtr = iPtr->varFramePtr;
+ Var *compiledLocals = varFramePtr->compiledLocals;
+ int iterNum, listTmpIndex, listLen, numVars;
+ int varIndex, valIndex, j;
+ Tcl_Obj *listPtr, *elemPtr, *oldValuePtr;
+ List *listRepPtr;
+ Var *iterVarPtr, *listVarPtr;
+ int continueLoop = 0;
+
+ /*
+ * Increment the temp holding the loop iteration number.
+ */
+
+ iterVarPtr = &(compiledLocals[iterTmpIndex]);
+ oldValuePtr = iterVarPtr->value.objPtr;
+ iterNum = (oldValuePtr->internalRep.longValue + 1);
+ Tcl_SetLongObj(oldValuePtr, iterNum);
+
+ /*
+ * Check whether all value lists are exhausted and we should
+ * stop the loop.
+ */
+
+ listTmpIndex = infoPtr->firstListTmp;
+ for (i = 0; i < numLists; i++) {
+ varListPtr = infoPtr->varLists[i];
+ numVars = varListPtr->numVars;
+
+ listVarPtr = &(compiledLocals[listTmpIndex]);
+ listPtr = listVarPtr->value.objPtr;
+ result = Tcl_ListObjLength(interp, listPtr, &listLen);
+ if (result != TCL_OK) {
+ TRACE_WITH_OBJ(("foreach_step4 %u => ERROR converting list %ld, \"%s\": ",
+ opnd, i, O2S(listPtr)),
+ Tcl_GetObjResult(interp));
+ goto checkForCatch;
+ }
+ 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.
+ */
+
+ if (continueLoop) {
+ listTmpIndex = infoPtr->firstListTmp;
+ for (i = 0; i < numLists; i++) {
+ varListPtr = infoPtr->varLists[i];
+ numVars = varListPtr->numVars;
+
+ listVarPtr = &(compiledLocals[listTmpIndex]);
+ listPtr = listVarPtr->value.objPtr;
+ listRepPtr = (List *)
+ listPtr->internalRep.otherValuePtr;
+ listLen = listRepPtr->elemCount;
+
+ valIndex = (iterNum * numVars);
+ for (j = 0; j < numVars; j++) {
+ int setEmptyStr = 0;
+ if (valIndex >= listLen) {
+ setEmptyStr = 1;
+ elemPtr = Tcl_NewObj();
+ } else {
+ elemPtr = listRepPtr->elements[valIndex];
+ }
+
+ varIndex = varListPtr->varIndexes[j];
+ DECACHE_STACK_INFO();
+ value2Ptr = TclSetIndexedScalar(interp,
+ varIndex, elemPtr, /*leaveErrorMsg*/ 1);
+ CACHE_STACK_INFO();
+ if (value2Ptr == NULL) {
+ TRACE_WITH_OBJ(("foreach_step4 %u => ERROR init. index temp %d: ",
+ opnd, varIndex),
+ Tcl_GetObjResult(interp));
+ if (setEmptyStr) {
+ Tcl_DecrRefCount(elemPtr); /* unneeded */
+ }
+ result = TCL_ERROR;
+ goto checkForCatch;
+ }
+ valIndex++;
+ }
+ listTmpIndex++;
+ }
+ }
+
+ /*
+ * Now push a "1" object if at least one value list had a
+ * remaining element and the loop should continue.
+ * Otherwise push "0".
+ */
+
+ PUSH_OBJECT(Tcl_NewLongObj(continueLoop));
+ TRACE(("foreach_step4 %u => %d lists, iter %d, %s loop\n",
+ opnd, numLists, iterNum,
+ (continueLoop? "continue" : "exit")));
+ }
+ ADJUST_PC(5);
+
+ 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.
+ */
+ catchStackPtr[++catchTop] = stackTop;
+ TRACE(("beginCatch4 %u => catchTop=%d, stackTop=%d\n",
+ TclGetUInt4AtPtr(pc+1), catchTop, stackTop));
+ ADJUST_PC(5);
+
+ case INST_END_CATCH:
+ catchTop--;
+ result = TCL_OK;
+ TRACE(("endCatch => catchTop=%d\n", catchTop));
+ ADJUST_PC(1);
+
+ case INST_PUSH_RESULT:
+ PUSH_OBJECT(Tcl_GetObjResult(interp));
+ TRACE_WITH_OBJ(("pushResult => "), Tcl_GetObjResult(interp));
+ ADJUST_PC(1);
+
+ case INST_PUSH_RETURN_CODE:
+ PUSH_OBJECT(Tcl_NewLongObj(result));
+ TRACE(("pushReturnCode => %u\n", result));
+ ADJUST_PC(1);
+
+ default:
+ TRACE(("UNRECOGNIZED INSTRUCTION %u\n", opCode));
+ panic("TclExecuteByteCode: unrecognized opCode %u", opCode);
+ } /* end of switch on opCode */
+
+ /*
+ * Division by zero in an expression. Control only reaches this
+ * point by "goto divideByZero".
+ */
+
+ divideByZero:
+ Tcl_ResetResult(interp);
+ Tcl_AppendToObj(Tcl_GetObjResult(interp), "divide by zero", -1);
+ Tcl_SetErrorCode(interp, "ARITH", "DIVZERO", "divide by zero",
+ (char *) NULL);
+ 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 ((result == TCL_ERROR) && !(iPtr->flags & ERR_ALREADY_LOGGED)) {
+ RecordTracebackInfo(interp, pc, codePtr);
+ }
+ rangePtr = TclGetExceptionRangeForPc(pc, /*catchOnly*/ 1, codePtr);
+ if (rangePtr == NULL) {
+ TRACE((" ... no enclosing catch, returning %s\n",
+ StringForResultCode(result)));
+ 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 (stackTop > catchStackPtr[catchTop]) {
+ valuePtr = POP_OBJECT();
+ TclDecrRefCount(valuePtr);
+ }
+ TRACE((" ... found catch at %d, catchTop=%d, unwound to %d, new pc %u\n",
+ rangePtr->codeOffset, catchTop, catchStackPtr[catchTop],
+ (unsigned int)(rangePtr->catchOffset)));
+ pc = (codePtr->codeStart + rangePtr->catchOffset);
+ continue; /* 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.
+ */
+
+ abnormalReturn:
+ while (stackTop > initStackTop) {
+ valuePtr = POP_OBJECT();
+ Tcl_DecrRefCount(valuePtr);
+ }
+
+ /*
+ * Free the catch stack array if malloc'ed storage was used.
+ */
+
+ done:
+ if (catchStackPtr != catchStackStorage) {
+ ckfree((char *) catchStackPtr);
+ }
+ eePtr->stackTop = initStackTop;
+ return result;
+#undef STATIC_CATCH_STACK_SIZE
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * PrintByteCodeInfo --
+ *
+ * This procedure prints a summary about a bytecode object to stdout.
+ * It is called by TclExecuteByteCode when starting to execute the
+ * bytecode object if tclTraceExec has the value 2 or more.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+PrintByteCodeInfo(codePtr)
+ register ByteCode *codePtr; /* The bytecode whose summary is printed
+ * to stdout. */
+{
+ Proc *procPtr = codePtr->procPtr;
+ int numCmds = codePtr->numCommands;
+ int numObjs = codePtr->numObjects;
+ int objBytes, i;
+
+ objBytes = (numObjs * sizeof(Tcl_Obj));
+ for (i = 0; i < numObjs; i++) {
+ Tcl_Obj *litObjPtr = codePtr->objArrayPtr[i];
+ if (litObjPtr->bytes != NULL) {
+ objBytes += litObjPtr->length;
+ }
+ }
+
+ fprintf(stdout, "\nExecuting ByteCode 0x%x, ref ct %u, epoch %u, interp 0x%x(epoch %u)\n",
+ (unsigned int) codePtr, codePtr->refCount,
+ codePtr->compileEpoch, (unsigned int) codePtr->iPtr,
+ codePtr->iPtr->compileEpoch);
+
+ fprintf(stdout, " Source: ");
+ TclPrintSource(stdout, codePtr->source, 70);
+
+ fprintf(stdout, "\n Cmds %d, chars %d, inst %u, objs %u, aux %d, stk depth %u, code/src %.2fn",
+ numCmds, codePtr->numSrcChars, codePtr->numCodeBytes, numObjs,
+ codePtr->numAuxDataItems, codePtr->maxStackDepth,
+ (codePtr->numSrcChars?
+ ((float)codePtr->totalSize)/((float)codePtr->numSrcChars) : 0.0));
+
+ fprintf(stdout, " Code %d = %d(header)+%d(inst)+%d(objs)+%d(exc)+%d(aux)+%d(cmd map)\n",
+ codePtr->totalSize, sizeof(ByteCode), codePtr->numCodeBytes,
+ objBytes, (codePtr->numExcRanges * sizeof(ExceptionRange)),
+ (codePtr->numAuxDataItems * sizeof(AuxData)),
+ codePtr->numCmdLocBytes);
+
+ if (procPtr != NULL) {
+ fprintf(stdout,
+ " Proc 0x%x, ref ct %d, args %d, compiled locals %d\n",
+ (unsigned int) procPtr, procPtr->refCount,
+ procPtr->numArgs, procPtr->numCompiledLocals);
+ }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ValidatePcAndStackTop --
+ *
+ * This procedure is called by TclExecuteByteCode 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(codePtr, pc, stackTop, stackLowerBound, stackUpperBound)
+ register ByteCode *codePtr; /* The bytecode whose summary is printed
+ * to stdout. */
+ 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 stackLowerBound; /* Smallest legal value for stackTop. */
+ int stackUpperBound; /* Greatest legal value for stackTop. */
+{
+ unsigned int relativePc = (unsigned int) (pc - codePtr->codeStart);
+ unsigned int codeStart = (unsigned int) codePtr->codeStart;
+ unsigned int codeEnd = (unsigned int)
+ (codePtr->codeStart + codePtr->numCodeBytes);
+ unsigned char opCode = *pc;
+
+ if (((unsigned int) pc < codeStart) || ((unsigned int) pc > codeEnd)) {
+ fprintf(stderr, "\nBad instruction pc 0x%x in TclExecuteByteCode\n",
+ (unsigned int) pc);
+ panic("TclExecuteByteCode execution failure: bad pc");
+ }
+ if ((unsigned int) opCode > LAST_INST_OPCODE) {
+ fprintf(stderr, "\nBad opcode %d at pc %u in TclExecuteByteCode\n",
+ (unsigned int) opCode, relativePc);
+ panic("TclExecuteByteCode execution failure: bad opcode");
+ }
+ if ((stackTop < stackLowerBound) || (stackTop > stackUpperBound)) {
+ int numChars;
+ char *cmd = GetSrcInfoForPc(pc, codePtr, &numChars);
+ char *ellipsis = "";
+
+ fprintf(stderr, "\nBad stack top %d at pc %u in TclExecuteByteCode",
+ stackTop, relativePc);
+ if (cmd != NULL) {
+ if (numChars > 100) {
+ numChars = 100;
+ ellipsis = "...";
+ }
+ fprintf(stderr, "\n executing %.*s%s\n", numChars, cmd,
+ ellipsis);
+ } else {
+ fprintf(stderr, "\n");
+ }
+ panic("TclExecuteByteCode execution failure: bad stack top");
+ }
+}
+#endif /* TCL_COMPILE_DEBUG */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * IllegalExprOperandType --
+ *
+ * Used by TclExecuteByteCode to add an error message to errorInfo
+ * when an illegal operand type is detected by an expression
+ * instruction. The argument opCode holds the failing instruction's
+ * opcode and opndPtr holds the operand object in error.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * An error message is appended to errorInfo.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+IllegalExprOperandType(interp, opCode, opndPtr)
+ Tcl_Interp *interp; /* Interpreter to which error information
+ * pertains. */
+ unsigned int opCode; /* The instruction opcode being executed
+ * when the illegal type was found. */
+ Tcl_Obj *opndPtr; /* Points to the operand holding the value
+ * with the illegal type. */
+{
+ Tcl_ResetResult(interp);
+ if ((opndPtr->bytes == NULL) || (opndPtr->length == 0)) {
+ Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
+ "can't use empty string as operand of \"",
+ operatorStrings[opCode - INST_LOR], "\"", (char *) NULL);
+ } else {
+ Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "can't use ",
+ ((opndPtr->typePtr == &tclDoubleType) ?
+ "floating-point value" : "non-numeric string"),
+ " as operand of \"", operatorStrings[opCode - INST_LOR],
+ "\"", (char *) NULL);
+ }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * CallTraceProcedure --
+ *
+ * Invokes a trace procedure registered with an interpreter. These
+ * procedures trace command execution. Currently this trace procedure
+ * is called with the address of the string-based Tcl_CmdProc for the
+ * command, not the Tcl_ObjCmdProc.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Those side effects made by the trace procedure.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+CallTraceProcedure(interp, tracePtr, cmdPtr, command, numChars, objc, objv)
+ Tcl_Interp *interp; /* The current interpreter. */
+ register Trace *tracePtr; /* Describes the trace procedure to call. */
+ Command *cmdPtr; /* Points to command's Command struct. */
+ char *command; /* Points to the first character of the
+ * command's source before substitutions. */
+ int numChars; /* The number of characters in the
+ * command's source. */
+ register int objc; /* Number of arguments for the command. */
+ Tcl_Obj *objv[]; /* Pointers to Tcl_Obj of each argument. */
+{
+ Interp *iPtr = (Interp *) interp;
+ register char **argv;
+ register int i;
+ int length;
+ char *p;
+
+ /*
+ * Get the string rep from the objv argument objects and place their
+ * pointers in argv. First make sure argv is large enough to hold the
+ * objc args plus 1 extra word for the zero end-of-argv word.
+ * THIS FAILS IF AN OBJECT'S STRING REP CONTAINS NULLS.
+ */
+
+ argv = (char **) ckalloc((unsigned)(objc + 1) * sizeof(char *));
+ for (i = 0; i < objc; i++) {
+ argv[i] = Tcl_GetStringFromObj(objv[i], &length);
+ }
+ argv[objc] = 0;
+
+ /*
+ * Copy the command characters into a new string.
+ */
+
+ p = (char *) ckalloc((unsigned) (numChars + 1));
+ memcpy((VOID *) p, (VOID *) command, (size_t) numChars);
+ p[numChars] = '\0';
+
+ /*
+ * Call the trace procedure then free allocated storage.
+ */
+
+ (*tracePtr->proc)(tracePtr->clientData, interp, iPtr->numLevels,
+ p, cmdPtr->proc, cmdPtr->clientData, objc, argv);
+
+ ckfree((char *) argv);
+ ckfree((char *) p);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * RecordTracebackInfo --
+ *
+ * Procedure called by TclExecuteByteCode to record information
+ * about what was being executed when the error occurred.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Appends information about the command being executed to the
+ * "errorInfo" variable. Sets the errorLine field in the interpreter
+ * to the line number of that command. Sets the ERR_ALREADY_LOGGED
+ * bit in the interpreter's execution flags.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+RecordTracebackInfo(interp, pc, codePtr)
+ Tcl_Interp *interp; /* The interpreter in which the error
+ * occurred. */
+ unsigned char *pc; /* The program counter value where the error * occurred. This points to a bytecode
+ * instruction in codePtr's code. */
+ ByteCode *codePtr; /* The bytecode sequence being executed. */
+{
+ register Interp *iPtr = (Interp *) interp;
+ char *cmd, *ellipsis;
+ char buf[200];
+ register char *p;
+ int numChars;
+
+ /*
+ * Record the command in errorInfo (up to a certain number of
+ * characters, or up to the first newline).
+ */
+
+ iPtr->errorLine = 1;
+ cmd = GetSrcInfoForPc(pc, codePtr, &numChars);
+ if (cmd != NULL) {
+ for (p = codePtr->source; p != cmd; p++) {
+ if (*p == '\n') {
+ iPtr->errorLine++;
+ }
+ }
+ for ( ; (isspace(UCHAR(*p)) || (*p == ';')); p++) {
+ if (*p == '\n') {
+ iPtr->errorLine++;
+ }
+ }
+
+ ellipsis = "";
+ if (numChars > 150) {
+ numChars = 150;
+ ellipsis = "...";
+ }
+ if (!(iPtr->flags & ERR_IN_PROGRESS)) {
+ sprintf(buf, "\n while executing\n\"%.*s%s\"",
+ numChars, cmd, ellipsis);
+ } else {
+ sprintf(buf, "\n invoked from within\n\"%.*s%s\"",
+ numChars, cmd, ellipsis);
+ }
+ Tcl_AddObjErrorInfo(interp, buf, -1);
+ iPtr->flags |= ERR_ALREADY_LOGGED;
+ }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetSrcInfoForPc --
+ *
+ * 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:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static char *
+GetSrcInfoForPc(pc, codePtr, lengthPtr)
+ unsigned char *pc; /* The program counter value for which to
+ * return the closest command's source info.
+ * This points to 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. */
+{
+ 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. */
+
+ if ((pcOffset < 0) || (pcOffset >= codePtr->numCodeBytes)) {
+ return NULL;
+ }
+
+ /*
+ * 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 int) (*codeDeltaNext) == (unsigned int) 0xFF) {
+ codeDeltaNext++;
+ delta = TclGetInt4AtPtr(codeDeltaNext);
+ codeDeltaNext += 4;
+ } else {
+ delta = TclGetInt1AtPtr(codeDeltaNext);
+ codeDeltaNext++;
+ }
+ codeOffset += delta;
+
+ if ((unsigned int) (*codeLengthNext) == (unsigned int) 0xFF) {
+ codeLengthNext++;
+ codeLen = TclGetInt4AtPtr(codeLengthNext);
+ codeLengthNext += 4;
+ } else {
+ codeLen = TclGetInt1AtPtr(codeLengthNext);
+ codeLengthNext++;
+ }
+ codeEnd = (codeOffset + codeLen - 1);
+
+ if ((unsigned int) (*srcDeltaNext) == (unsigned int) 0xFF) {
+ srcDeltaNext++;
+ delta = TclGetInt4AtPtr(srcDeltaNext);
+ srcDeltaNext += 4;
+ } else {
+ delta = TclGetInt1AtPtr(srcDeltaNext);
+ srcDeltaNext++;
+ }
+ srcOffset += delta;
+
+ if ((unsigned int) (*srcLengthNext) == (unsigned int) 0xFF) {
+ srcLengthNext++;
+ srcLen = TclGetInt4AtPtr(srcLengthNext);
+ srcLengthNext += 4;
+ } else {
+ srcLen = TclGetInt1AtPtr(srcLengthNext);
+ srcLengthNext++;
+ }
+
+ if (codeOffset > pcOffset) { /* best cmd already found */
+ break;
+ } else if (pcOffset <= codeEnd) { /* this cmd's code encloses pc */
+ int dist = (pcOffset - codeOffset);
+ if (dist <= bestDist) {
+ bestDist = dist;
+ bestSrcOffset = srcOffset;
+ bestSrcLength = srcLen;
+ }
+ }
+ }
+
+ if (bestDist == INT_MAX) {
+ return NULL;
+ }
+
+ if (lengthPtr != NULL) {
+ *lengthPtr = bestSrcLength;
+ }
+ return (codePtr->source + bestSrcOffset);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclGetExceptionRangeForPc --
+ *
+ * Procedure that given a program counter value, returns the closest
+ * enclosing ExceptionRange that matches the kind requested.
+ *
+ * Results:
+ * In the normal case, catchOnly is 0 (false) and this procedure
+ * returns a pointer to the most closely enclosing ExceptionRange
+ * structure regardless of whether it is a loop or catch exception
+ * range. This is appropriate when processing a TCL_BREAK or
+ * TCL_CONTINUE, which will be "handled" either by a loop exception
+ * range or a closer catch range. If catchOnly is nonzero (true), this
+ * procedure ignores loop exception ranges and returns a pointer to the
+ * closest catch range. If no matching ExceptionRange is found that
+ * encloses pc, a NULL is returned.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+ExceptionRange *
+TclGetExceptionRangeForPc(pc, catchOnly, codePtr)
+ 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 catchOnly; /* If 0, consider either loop or catch
+ * ExceptionRanges in search. Otherwise
+ * consider only catch ranges (and ignore
+ * any closer loop ranges). */
+ ByteCode* codePtr; /* Points to the ByteCode in which to search
+ * for the enclosing ExceptionRange. */
+{
+ ExceptionRange *rangeArrayPtr = codePtr->excRangeArrayPtr;
+ int numRanges = codePtr->numExcRanges;
+ register ExceptionRange *rangePtr;
+ int codeOffset = (pc - codePtr->codeStart);
+ register int i, level;
+
+ for (level = codePtr->maxExcRangeDepth; level >= 0; level--) {
+ for (i = 0; i < numRanges; i++) {
+ rangePtr = &(rangeArrayPtr[i]);
+ if (rangePtr->nestingLevel == level) {
+ int start = rangePtr->codeOffset;
+ int end = (start + rangePtr->numCodeBytes);
+ if ((start <= codeOffset) && (codeOffset < end)) {
+ if ((!catchOnly)
+ || (rangePtr->type == CATCH_EXCEPTION_RANGE)) {
+ return rangePtr;
+ }
+ }
+ }
+ }
+ }
+ return NULL;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Math Functions --
+ *
+ * This page contains the procedures that implement all of the
+ * built-in math functions for expressions.
+ *
+ * Results:
+ * Each procedure returns TCL_OK if it succeeds and pushes an
+ * Tcl object holding the result. If it fails it returns TCL_ERROR
+ * and leaves an error message in the interpreter's result.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ExprUnaryFunc(interp, eePtr, clientData)
+ Tcl_Interp *interp; /* The interpreter in which to execute the
+ * function. */
+ ExecEnv *eePtr; /* Points to the environment for executing
+ * the function. */
+ ClientData clientData; /* Contains the address of a procedure that
+ * takes one double argument and returns a
+ * double result. */
+{
+ StackItem *stackPtr; /* Cached evaluation stack base pointer. */
+ register int stackTop; /* Cached top index of evaluation stack. */
+ register Tcl_Obj *valuePtr;
+ Tcl_ObjType *tPtr;
+ double d, dResult;
+ long i;
+ int result = TCL_OK;
+
+ double (*func) _ANSI_ARGS_((double)) =
+ (double (*)_ANSI_ARGS_((double))) clientData;
+
+ /*
+ * Set stackPtr and stackTop from eePtr.
+ */
+
+ CACHE_STACK_INFO();
+
+ /*
+ * Pop the function's argument from the evaluation stack. Convert it
+ * to a double if necessary.
+ */
+
+ valuePtr = POP_OBJECT();
+ tPtr = valuePtr->typePtr;
+
+ if (tPtr == &tclIntType) {
+ d = (double) valuePtr->internalRep.longValue;
+ } else if (tPtr == &tclDoubleType) {
+ d = valuePtr->internalRep.doubleValue;
+ } else { /* FAILS IF STRING REP HAS NULLS */
+ char *s = Tcl_GetStringFromObj(valuePtr, (int *) NULL);
+
+ if (TclLooksLikeInt(s)) {
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL, valuePtr, &i);
+ d = (double) valuePtr->internalRep.longValue;
+ } else {
+ result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL, valuePtr, &d);
+ }
+ if (result != TCL_OK) {
+ Tcl_ResetResult(interp);
+ Tcl_AppendToObj(Tcl_GetObjResult(interp),
+ "argument to math function didn't have numeric value", -1);
+ goto done;
+ }
+ }
+
+ errno = 0;
+ dResult = (*func)(d);
+ if ((errno != 0) || IS_NAN(dResult) || IS_INF(dResult)) {
+ TclExprFloatError(interp, dResult);
+ result = TCL_ERROR;
+ goto done;
+ }
+
+ /*
+ * Push a Tcl object holding the result.
+ */
+
+ PUSH_OBJECT(Tcl_NewDoubleObj(dResult));
+
+ /*
+ * Reflect the change to stackTop back in eePtr.
+ */
+
+ done:
+ Tcl_DecrRefCount(valuePtr);
+ DECACHE_STACK_INFO();
+ return result;
+}
+
+static int
+ExprBinaryFunc(interp, eePtr, clientData)
+ Tcl_Interp *interp; /* The interpreter in which to execute the
+ * function. */
+ ExecEnv *eePtr; /* Points to the environment for executing
+ * the function. */
+ ClientData clientData; /* Contains the address of a procedure that
+ * takes two double arguments and
+ * returns a double result. */
+{
+ StackItem *stackPtr; /* Cached evaluation stack base pointer. */
+ register int stackTop; /* Cached top index of evaluation stack. */
+ register Tcl_Obj *valuePtr, *value2Ptr;
+ Tcl_ObjType *tPtr;
+ double d1, d2, dResult;
+ long i;
+ char *s;
+ int result = TCL_OK;
+
+ double (*func) _ANSI_ARGS_((double, double))
+ = (double (*)_ANSI_ARGS_((double, double))) clientData;
+
+ /*
+ * Set stackPtr and stackTop from eePtr.
+ */
+
+ CACHE_STACK_INFO();
+
+ /*
+ * Pop the function's two arguments from the evaluation stack. Convert
+ * them to doubles if necessary.
+ */
+
+ value2Ptr = POP_OBJECT();
+ valuePtr = POP_OBJECT();
+
+ tPtr = valuePtr->typePtr;
+ if (tPtr == &tclIntType) {
+ d1 = (double) valuePtr->internalRep.longValue;
+ } else if (tPtr == &tclDoubleType) {
+ d1 = valuePtr->internalRep.doubleValue;
+ } else { /* FAILS IF STRING REP HAS NULLS */
+ s = Tcl_GetStringFromObj(valuePtr, (int *) NULL);
+ if (TclLooksLikeInt(s)) {
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL, valuePtr, &i);
+ d1 = (double) valuePtr->internalRep.longValue;
+ } else {
+ result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL, valuePtr, &d1);
+ }
+ if (result != TCL_OK) {
+ badArg:
+ Tcl_ResetResult(interp);
+ Tcl_AppendToObj(Tcl_GetObjResult(interp),
+ "argument to math function didn't have numeric value", -1);
+ goto done;
+ }
+ }
+
+ tPtr = value2Ptr->typePtr;
+ if (tPtr == &tclIntType) {
+ d2 = value2Ptr->internalRep.longValue;
+ } else if (tPtr == &tclDoubleType) {
+ d2 = value2Ptr->internalRep.doubleValue;
+ } else { /* FAILS IF STRING REP HAS NULLS */
+ s = Tcl_GetStringFromObj(value2Ptr, (int *) NULL);
+ if (TclLooksLikeInt(s)) {
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL, value2Ptr, &i);
+ d2 = (double) value2Ptr->internalRep.longValue;
+ } else {
+ result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL, value2Ptr, &d2);
+ }
+ if (result != TCL_OK) {
+ goto badArg;
+ }
+ }
+
+ errno = 0;
+ dResult = (*func)(d1, d2);
+ if ((errno != 0) || IS_NAN(dResult) || IS_INF(dResult)) {
+ TclExprFloatError(interp, dResult);
+ result = TCL_ERROR;
+ goto done;
+ }
+
+ /*
+ * Push a Tcl object holding the result.
+ */
+
+ PUSH_OBJECT(Tcl_NewDoubleObj(dResult));
+
+ /*
+ * Reflect the change to stackTop back in eePtr.
+ */
+
+ done:
+ Tcl_DecrRefCount(valuePtr);
+ Tcl_DecrRefCount(value2Ptr);
+ DECACHE_STACK_INFO();
+ return result;
+}
+
+static int
+ExprAbsFunc(interp, eePtr, clientData)
+ Tcl_Interp *interp; /* The interpreter in which to execute the
+ * function. */
+ ExecEnv *eePtr; /* Points to the environment for executing
+ * the function. */
+ ClientData clientData; /* Ignored. */
+{
+ StackItem *stackPtr; /* Cached evaluation stack base pointer. */
+ register int stackTop; /* Cached top index of evaluation stack. */
+ register Tcl_Obj *valuePtr;
+ Tcl_ObjType *tPtr;
+ long i, iResult;
+ double d, dResult;
+ int result = TCL_OK;
+
+ /*
+ * Set stackPtr and stackTop from eePtr.
+ */
+
+ CACHE_STACK_INFO();
+
+ /*
+ * Pop the argument from the evaluation stack.
+ */
+
+ valuePtr = POP_OBJECT();
+ tPtr = valuePtr->typePtr;
+
+ if (tPtr == &tclIntType) {
+ i = valuePtr->internalRep.longValue;
+ } else if (tPtr == &tclDoubleType) {
+ d = valuePtr->internalRep.doubleValue;
+ } else { /* FAILS IF STRING REP HAS NULLS */
+ char *s = Tcl_GetStringFromObj(valuePtr, (int *) NULL);
+
+ if (TclLooksLikeInt(s)) {
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL, valuePtr, &i);
+ } else {
+ result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL, valuePtr, &d);
+ }
+ if (result != TCL_OK) {
+ Tcl_ResetResult(interp);
+ Tcl_AppendToObj(Tcl_GetObjResult(interp),
+ "argument to math function didn't have numeric value", -1);
+ goto done;
+ }
+ tPtr = valuePtr->typePtr;
+ }
+
+ /*
+ * Push a Tcl object with the result.
+ */
+
+ if (tPtr == &tclIntType) {
+ if (i < 0) {
+ iResult = -i;
+ if (iResult < 0) {
+ Tcl_ResetResult(interp);
+ Tcl_AppendToObj(Tcl_GetObjResult(interp),
+ "integer value too large to represent", -1);
+ Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW",
+ "integer value too large to represent", (char *) NULL);
+ result = TCL_ERROR;
+ goto done;
+ }
+ } else {
+ iResult = i;
+ }
+ PUSH_OBJECT(Tcl_NewLongObj(iResult));
+ } else {
+ if (d < 0.0) {
+ dResult = -d;
+ } else {
+ dResult = d;
+ }
+ if (IS_NAN(dResult) || IS_INF(dResult)) {
+ TclExprFloatError(interp, dResult);
+ result = TCL_ERROR;
+ goto done;
+ }
+ PUSH_OBJECT(Tcl_NewDoubleObj(dResult));
+ }
+
+ /*
+ * Reflect the change to stackTop back in eePtr.
+ */
+
+ done:
+ Tcl_DecrRefCount(valuePtr);
+ DECACHE_STACK_INFO();
+ return result;
+}
+
+static int
+ExprDoubleFunc(interp, eePtr, clientData)
+ Tcl_Interp *interp; /* The interpreter in which to execute the
+ * function. */
+ ExecEnv *eePtr; /* Points to the environment for executing
+ * the function. */
+ ClientData clientData; /* Ignored. */
+{
+ StackItem *stackPtr; /* Cached evaluation stack base pointer. */
+ register int stackTop; /* Cached top index of evaluation stack. */
+ register Tcl_Obj *valuePtr;
+ double dResult;
+ long i;
+ int result = TCL_OK;
+
+ /*
+ * Set stackPtr and stackTop from eePtr.
+ */
+
+ CACHE_STACK_INFO();
+
+ /*
+ * Pop the argument from the evaluation stack.
+ */
+
+ valuePtr = POP_OBJECT();
+ if (valuePtr->typePtr == &tclIntType) {
+ dResult = (double) valuePtr->internalRep.longValue;
+ } else if (valuePtr->typePtr == &tclDoubleType) {
+ dResult = valuePtr->internalRep.doubleValue;
+ } else { /* FAILS IF STRING REP HAS NULLS */
+ char *s = Tcl_GetStringFromObj(valuePtr, (int *) NULL);
+
+ if (TclLooksLikeInt(s)) {
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL, valuePtr, &i);
+ dResult = (double) valuePtr->internalRep.longValue;
+ } else {
+ result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL, valuePtr,
+ &dResult);
+ }
+ if (result != TCL_OK) {
+ Tcl_ResetResult(interp);
+ Tcl_AppendToObj(Tcl_GetObjResult(interp),
+ "argument to math function didn't have numeric value", -1);
+ goto done;
+ }
+ }
+
+ /*
+ * Push a Tcl object with the result.
+ */
+
+ PUSH_OBJECT(Tcl_NewDoubleObj(dResult));
+
+ /*
+ * Reflect the change to stackTop back in eePtr.
+ */
+
+ done:
+ Tcl_DecrRefCount(valuePtr);
+ DECACHE_STACK_INFO();
+ return result;
+}
+
+static int
+ExprIntFunc(interp, eePtr, clientData)
+ Tcl_Interp *interp; /* The interpreter in which to execute the
+ * function. */
+ ExecEnv *eePtr; /* Points to the environment for executing
+ * the function. */
+ ClientData clientData; /* Ignored. */
+{
+ StackItem *stackPtr; /* Cached evaluation stack base pointer. */
+ register int stackTop; /* Cached top index of evaluation stack. */
+ register Tcl_Obj *valuePtr;
+ Tcl_ObjType *tPtr;
+ long i = 0; /* Initialized to avoid compiler warning. */
+ long iResult;
+ double d;
+ int result = TCL_OK;
+
+ /*
+ * Set stackPtr and stackTop from eePtr.
+ */
+
+ CACHE_STACK_INFO();
+
+ /*
+ * Pop the argument from the evaluation stack.
+ */
+
+ valuePtr = POP_OBJECT();
+ tPtr = valuePtr->typePtr;
+
+ if (tPtr == &tclIntType) {
+ i = valuePtr->internalRep.longValue;
+ } else if (tPtr == &tclDoubleType) {
+ d = valuePtr->internalRep.doubleValue;
+ } else { /* FAILS IF STRING REP HAS NULLS */
+ char *s = Tcl_GetStringFromObj(valuePtr, (int *) NULL);
+
+ if (TclLooksLikeInt(s)) {
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL, valuePtr, &i);
+ } else {
+ result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL, valuePtr, &d);
+ }
+ if (result != TCL_OK) {
+ Tcl_ResetResult(interp);
+ Tcl_AppendToObj(Tcl_GetObjResult(interp),
+ "argument to math function didn't have numeric value", -1);
+ goto done;
+ }
+ tPtr = valuePtr->typePtr;
+ }
+
+ /*
+ * Push a Tcl object with the result.
+ */
+
+ if (tPtr == &tclIntType) {
+ iResult = i;
+ } else {
+ if (d < 0.0) {
+ if (d < (double) (long) LONG_MIN) {
+ tooLarge:
+ Tcl_ResetResult(interp);
+ Tcl_AppendToObj(Tcl_GetObjResult(interp),
+ "integer value too large to represent", -1);
+ Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW",
+ "integer value too large to represent", (char *) NULL);
+ result = TCL_ERROR;
+ goto done;
+ }
+ } else {
+ if (d > (double) LONG_MAX) {
+ goto tooLarge;
+ }
+ }
+ if (IS_NAN(d) || IS_INF(d)) {
+ TclExprFloatError(interp, d);
+ result = TCL_ERROR;
+ goto done;
+ }
+ iResult = (long) d;
+ }
+ PUSH_OBJECT(Tcl_NewLongObj(iResult));
+
+ /*
+ * Reflect the change to stackTop back in eePtr.
+ */
+
+ done:
+ Tcl_DecrRefCount(valuePtr);
+ DECACHE_STACK_INFO();
+ return result;
+}
+
+static int
+ExprRandFunc(interp, eePtr, clientData)
+ Tcl_Interp *interp; /* The interpreter in which to execute the
+ * function. */
+ ExecEnv *eePtr; /* Points to the environment for executing
+ * the function. */
+ ClientData clientData; /* Ignored. */
+{
+ StackItem *stackPtr; /* Cached evaluation stack base pointer. */
+ register int stackTop; /* Cached top index of evaluation stack. */
+ Interp *iPtr = (Interp *) interp;
+ double dResult;
+ int tmp;
+
+ if (!(iPtr->flags & RAND_SEED_INITIALIZED)) {
+ iPtr->flags |= RAND_SEED_INITIALIZED;
+ iPtr->randSeed = TclpGetClicks();
+ }
+
+ /*
+ * Set stackPtr and stackTop from eePtr.
+ */
+
+ CACHE_STACK_INFO();
+
+ /*
+ * Generate the random number using the linear congruential
+ * generator defined by the following recurrence:
+ * seed = ( IA * seed ) mod IM
+ * where IA is 16807 and IM is (2^31) - 1. In order to avoid
+ * potential problems with integer overflow, the code uses
+ * additional constants IQ and IR such that
+ * IM = IA*IQ + IR
+ * For details on how this algorithm works, refer to the following
+ * papers:
+ *
+ * S.K. Park & K.W. Miller, "Random number generators: good ones
+ * are hard to find," Comm ACM 31(10):1192-1201, Oct 1988
+ *
+ * W.H. Press & S.A. Teukolsky, "Portable random number
+ * generators," Computers in Physics 6(5):522-524, Sep/Oct 1992.
+ */
+
+#define RAND_IA 16807
+#define RAND_IM 2147483647
+#define RAND_IQ 127773
+#define RAND_IR 2836
+#define RAND_MASK 123459876
+
+ if (iPtr->randSeed == 0) {
+ /*
+ * Don't allow a 0 seed, since it breaks the generator. Shift
+ * it to some other value.
+ */
+
+ iPtr->randSeed = 123459876;
+ }
+ tmp = iPtr->randSeed/RAND_IQ;
+ iPtr->randSeed = RAND_IA*(iPtr->randSeed - tmp*RAND_IQ) - RAND_IR*tmp;
+ if (iPtr->randSeed < 0) {
+ iPtr->randSeed += RAND_IM;
+ }
+
+ /*
+ * On 64-bit architectures we need to mask off the upper bits to
+ * ensure we only have a 32-bit range. The constant has the
+ * bizarre form below in order to make sure that it doesn't
+ * get sign-extended (the rules for sign extension are very
+ * concat, particularly on 64-bit machines).
+ */
+
+ iPtr->randSeed &= ((((unsigned long) 0xfffffff) << 4) | 0xf);
+ dResult = iPtr->randSeed * (1.0/RAND_IM);
+
+ /*
+ * Push a Tcl object with the result.
+ */
+
+ PUSH_OBJECT(Tcl_NewDoubleObj(dResult));
+
+ /*
+ * Reflect the change to stackTop back in eePtr.
+ */
+
+ DECACHE_STACK_INFO();
+ return TCL_OK;
+}
+
+static int
+ExprRoundFunc(interp, eePtr, clientData)
+ Tcl_Interp *interp; /* The interpreter in which to execute the
+ * function. */
+ ExecEnv *eePtr; /* Points to the environment for executing
+ * the function. */
+ ClientData clientData; /* Ignored. */
+{
+ StackItem *stackPtr; /* Cached evaluation stack base pointer. */
+ register int stackTop; /* Cached top index of evaluation stack. */
+ Tcl_Obj *valuePtr;
+ Tcl_ObjType *tPtr;
+ long i = 0; /* Initialized to avoid compiler warning. */
+ long iResult;
+ double d, temp;
+ int result = TCL_OK;
+
+ /*
+ * Set stackPtr and stackTop from eePtr.
+ */
+
+ CACHE_STACK_INFO();
+
+ /*
+ * Pop the argument from the evaluation stack.
+ */
+
+ valuePtr = POP_OBJECT();
+ tPtr = valuePtr->typePtr;
+
+ if (tPtr == &tclIntType) {
+ i = valuePtr->internalRep.longValue;
+ } else if (tPtr == &tclDoubleType) {
+ d = valuePtr->internalRep.doubleValue;
+ } else { /* FAILS IF STRING REP HAS NULLS */
+ char *s = Tcl_GetStringFromObj(valuePtr, (int *) NULL);
+
+ if (TclLooksLikeInt(s)) {
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL, valuePtr, &i);
+ } else {
+ result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL, valuePtr, &d);
+ }
+ if (result != TCL_OK) {
+ Tcl_ResetResult(interp);
+ Tcl_AppendToObj(Tcl_GetObjResult(interp),
+ "argument to math function didn't have numeric value", -1);
+ goto done;
+ }
+ tPtr = valuePtr->typePtr;
+ }
+
+ /*
+ * Push a Tcl object with the result.
+ */
+
+ if (tPtr == &tclIntType) {
+ iResult = i;
+ } else {
+ if (d < 0.0) {
+ if (d <= (((double) (long) LONG_MIN) - 0.5)) {
+ tooLarge:
+ Tcl_ResetResult(interp);
+ Tcl_AppendToObj(Tcl_GetObjResult(interp),
+ "integer value too large to represent", -1);
+ Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW",
+ "integer value too large to represent",
+ (char *) NULL);
+ result = TCL_ERROR;
+ goto done;
+ }
+ temp = (long) (d - 0.5);
+ } else {
+ if (d >= (((double) LONG_MAX + 0.5))) {
+ goto tooLarge;
+ }
+ temp = (long) (d + 0.5);
+ }
+ if (IS_NAN(temp) || IS_INF(temp)) {
+ TclExprFloatError(interp, temp);
+ result = TCL_ERROR;
+ goto done;
+ }
+ iResult = (long) temp;
+ }
+ PUSH_OBJECT(Tcl_NewLongObj(iResult));
+
+ /*
+ * Reflect the change to stackTop back in eePtr.
+ */
+
+ done:
+ Tcl_DecrRefCount(valuePtr);
+ DECACHE_STACK_INFO();
+ return result;
+}
+
+static int
+ExprSrandFunc(interp, eePtr, clientData)
+ Tcl_Interp *interp; /* The interpreter in which to execute the
+ * function. */
+ ExecEnv *eePtr; /* Points to the environment for executing
+ * the function. */
+ ClientData clientData; /* Ignored. */
+{
+ StackItem *stackPtr; /* Cached evaluation stack base pointer. */
+ register int stackTop; /* Cached top index of evaluation stack. */
+ Interp *iPtr = (Interp *) interp;
+ Tcl_Obj *valuePtr;
+ Tcl_ObjType *tPtr;
+ long i = 0; /* Initialized to avoid compiler warning. */
+ int result;
+
+ /*
+ * Set stackPtr and stackTop from eePtr.
+ */
+
+ CACHE_STACK_INFO();
+
+ /*
+ * Pop the argument from the evaluation stack. Use the value
+ * to reset the random number seed.
+ */
+
+ valuePtr = POP_OBJECT();
+ tPtr = valuePtr->typePtr;
+
+ if (tPtr == &tclIntType) {
+ i = valuePtr->internalRep.longValue;
+ } else { /* FAILS IF STRING REP HAS NULLS */
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL, valuePtr, &i);
+ if (result != TCL_OK) {
+ Tcl_ResetResult(interp);
+ Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "can't use ",
+ ((tPtr == &tclDoubleType)? "floating-point value" : "non-numeric string"),
+ " as argument to srand", (char *) NULL);
+ Tcl_DecrRefCount(valuePtr);
+ DECACHE_STACK_INFO();
+ return result;
+ }
+ }
+
+ /*
+ * Reset the seed.
+ */
+
+ iPtr->flags |= RAND_SEED_INITIALIZED;
+ iPtr->randSeed = i;
+
+ /*
+ * To avoid duplicating the random number generation code we simply
+ * clean up our state and call the real random number function. That
+ * function will always succeed.
+ */
+
+ Tcl_DecrRefCount(valuePtr);
+ DECACHE_STACK_INFO();
+
+ ExprRandFunc(interp, eePtr, clientData);
+ return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ExprCallMathFunc --
+ *
+ * This procedure is invoked to call a non-builtin math function
+ * during the execution of an expression.
+ *
+ * Results:
+ * TCL_OK is returned if all went well and the function's value
+ * was computed successfully. If an error occurred, TCL_ERROR
+ * is returned and an error message is left in the interpreter's
+ * result. After a successful return this procedure pushes a Tcl object
+ * holding the result.
+ *
+ * Side effects:
+ * None, unless the called math function has side effects.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ExprCallMathFunc(interp, eePtr, objc, objv)
+ Tcl_Interp *interp; /* The interpreter in which to execute the
+ * function. */
+ ExecEnv *eePtr; /* Points to the environment for executing
+ * the function. */
+ int objc; /* Number of arguments. The function name is
+ * the 0-th argument. */
+ Tcl_Obj **objv; /* The array of arguments. The function name
+ * is objv[0]. */
+{
+ Interp *iPtr = (Interp *) interp;
+ StackItem *stackPtr; /* Cached evaluation stack base pointer. */
+ register int stackTop; /* Cached top index of evaluation stack. */
+ char *funcName;
+ Tcl_HashEntry *hPtr;
+ MathFunc *mathFuncPtr; /* Information about math function. */
+ Tcl_Value args[MAX_MATH_ARGS]; /* Arguments for function call. */
+ Tcl_Value funcResult; /* Result of function call as Tcl_Value. */
+ register Tcl_Obj *valuePtr;
+ Tcl_ObjType *tPtr;
+ long i;
+ double d;
+ int j, k, result;
+
+ Tcl_ResetResult(interp);
+
+ /*
+ * Set stackPtr and stackTop from eePtr.
+ */
+
+ CACHE_STACK_INFO();
+
+ /*
+ * Look up the MathFunc record for the function.
+ * THIS FAILS IF THE OBJECT'S STRING REP CONTAINS NULLS.
+ */
+
+ funcName = Tcl_GetStringFromObj(objv[0], (int *) NULL);
+ hPtr = Tcl_FindHashEntry(&iPtr->mathFuncTable, funcName);
+ if (hPtr == NULL) {
+ Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
+ "unknown math function \"", funcName, "\"", (char *) NULL);
+ result = TCL_ERROR;
+ goto done;
+ }
+ mathFuncPtr = (MathFunc *) Tcl_GetHashValue(hPtr);
+ if (mathFuncPtr->numArgs != (objc-1)) {
+ panic("ExprCallMathFunc: expected number of args %d != actual number %d",
+ mathFuncPtr->numArgs, objc);
+ result = TCL_ERROR;
+ goto done;
+ }
+
+ /*
+ * Collect the arguments for the function, if there are any, into the
+ * array "args". Note that args[0] will have the Tcl_Value that
+ * corresponds to objv[1].
+ */
+
+ for (j = 1, k = 0; j < objc; j++, k++) {
+ valuePtr = objv[j];
+ tPtr = valuePtr->typePtr;
+
+ if (tPtr == &tclIntType) {
+ i = valuePtr->internalRep.longValue;
+ } else if (tPtr == &tclDoubleType) {
+ d = valuePtr->internalRep.doubleValue;
+ } else {
+ /*
+ * Try to convert to int first then double.
+ * FAILS IF STRING REP HAS NULLS.
+ */
+
+ char *s = Tcl_GetStringFromObj(valuePtr, (int *) NULL);
+
+ if (TclLooksLikeInt(s)) {
+ result = Tcl_GetLongFromObj((Tcl_Interp *) NULL, valuePtr, &i);
+ } else {
+ result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL,
+ valuePtr, &d);
+ }
+ if (result != TCL_OK) {
+ Tcl_AppendToObj(Tcl_GetObjResult(interp),
+ "argument to math function didn't have numeric value", -1);
+ goto done;
+ }
+ tPtr = valuePtr->typePtr;
+ }
+
+ /*
+ * Copy the object's numeric value to the argument record,
+ * converting it if necessary.
+ */
+
+ if (tPtr == &tclIntType) {
+ if (mathFuncPtr->argTypes[k] == TCL_DOUBLE) {
+ args[k].type = TCL_DOUBLE;
+ args[k].doubleValue = i;
+ } else {
+ args[k].type = TCL_INT;
+ args[k].intValue = i;
+ }
+ } else {
+ if (mathFuncPtr->argTypes[k] == TCL_INT) {
+ args[k].type = TCL_INT;
+ args[k].intValue = (long) d;
+ } else {
+ args[k].type = TCL_DOUBLE;
+ args[k].doubleValue = d;
+ }
+ }
+ }
+
+ /*
+ * Invoke the function and copy its result back into valuePtr.
+ */
+
+ tcl_MathInProgress++;
+ result = (*mathFuncPtr->proc)(mathFuncPtr->clientData, interp, args,
+ &funcResult);
+ tcl_MathInProgress--;
+ if (result != TCL_OK) {
+ goto done;
+ }
+
+ /*
+ * Pop the objc top stack elements and decrement their ref counts.
+ */
+
+ i = (stackTop - (objc-1));
+ while (i <= stackTop) {
+ valuePtr = stackPtr[i].o;
+ Tcl_DecrRefCount(valuePtr);
+ i++;
+ }
+ stackTop -= objc;
+
+ /*
+ * Push the call's object result.
+ */
+
+ if (funcResult.type == TCL_INT) {
+ PUSH_OBJECT(Tcl_NewLongObj(funcResult.intValue));
+ } else {
+ d = funcResult.doubleValue;
+ if (IS_NAN(d) || IS_INF(d)) {
+ TclExprFloatError(interp, d);
+ result = TCL_ERROR;
+ goto done;
+ }
+ PUSH_OBJECT(Tcl_NewDoubleObj(d));
+ }
+
+ /*
+ * Reflect the change to stackTop back in eePtr.
+ */
+
+ done:
+ DECACHE_STACK_INFO();
+ return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * 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(interp, value)
+ Tcl_Interp *interp; /* Where to store error message. */
+ double value; /* Value returned after error; used to
+ * distinguish underflows from overflows. */
+{
+ char *s;
+
+ Tcl_ResetResult(interp);
+ if ((errno == EDOM) || (value != value)) {
+ s = "domain error: argument not in valid range";
+ Tcl_AppendToObj(Tcl_GetObjResult(interp), s, -1);
+ Tcl_SetErrorCode(interp, "ARITH", "DOMAIN", s, (char *) NULL);
+ } else if ((errno == ERANGE) || IS_INF(value)) {
+ if (value == 0.0) {
+ s = "floating-point value too small to represent";
+ Tcl_AppendToObj(Tcl_GetObjResult(interp), s, -1);
+ Tcl_SetErrorCode(interp, "ARITH", "UNDERFLOW", s, (char *) NULL);
+ } else {
+ s = "floating-point value too large to represent";
+ Tcl_AppendToObj(Tcl_GetObjResult(interp), s, -1);
+ Tcl_SetErrorCode(interp, "ARITH", "OVERFLOW", s, (char *) NULL);
+ }
+ } else { /* FAILS IF STRING REP CONTAINS NULLS */
+ char msg[100];
+
+ sprintf(msg, "unknown floating-point error, errno = %d", errno);
+ Tcl_AppendToObj(Tcl_GetObjResult(interp), msg, -1);
+ Tcl_SetErrorCode(interp, "ARITH", "UNKNOWN", msg, (char *) NULL);
+ }
+}
+
+#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(value)
+ 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(unused, interp, argc, argv)
+ ClientData unused; /* Unused. */
+ Tcl_Interp *interp; /* The current interpreter. */
+ int argc; /* The number of arguments. */
+ char **argv; /* The argument strings. */
+{
+ register double total = 0.0;
+ register int i;
+ int maxSizeDecade = 0;
+ double totalHeaderBytes = (tclNumCompilations * sizeof(ByteCode));
+
+ for (i = 0; i < 256; i++) {
+ if (instructionCount[i] != 0) {
+ total += instructionCount[i];
+ }
+ }
+
+ for (i = 31; i >= 0; i--) {
+ if ((tclSourceCount[i] > 0) && (tclByteCodeCount[i] > 0)) {
+ maxSizeDecade = i;
+ break;
+ }
+ }
+
+ fprintf(stdout, "\nNumber of compilations %ld\n",
+ tclNumCompilations);
+ fprintf(stdout, "Number of executions %ld\n",
+ numExecutions);
+ fprintf(stdout, "Average executions/compilation %.0f\n",
+ ((float) numExecutions/tclNumCompilations));
+
+ fprintf(stdout, "\nInstructions executed %.0f\n",
+ total);
+ fprintf(stdout, "Average instructions/compile %.0f\n",
+ total/tclNumCompilations);
+ fprintf(stdout, "Average instructions/execution %.0f\n",
+ total/numExecutions);
+
+ fprintf(stdout, "\nTotal source bytes %.6g\n",
+ tclTotalSourceBytes);
+ fprintf(stdout, "Total code bytes %.6g\n",
+ tclTotalCodeBytes);
+ fprintf(stdout, "Average code/compilation %.0f\n",
+ tclTotalCodeBytes/tclNumCompilations);
+ fprintf(stdout, "Average code/source %.2f\n",
+ tclTotalCodeBytes/tclTotalSourceBytes);
+ fprintf(stdout, "Current source bytes %.6g\n",
+ tclCurrentSourceBytes);
+ fprintf(stdout, "Current code bytes %.6g\n",
+ tclCurrentCodeBytes);
+ fprintf(stdout, "Current code/source %.2f\n",
+ tclCurrentCodeBytes/tclCurrentSourceBytes);
+
+ fprintf(stdout, "\nTotal objects allocated %ld\n",
+ tclObjsAlloced);
+ fprintf(stdout, "Total objects freed %ld\n",
+ tclObjsFreed);
+ fprintf(stdout, "Current objects: %ld\n",
+ (tclObjsAlloced - tclObjsFreed));
+
+ fprintf(stdout, "\nBreakdown of code byte requirements:\n");
+ fprintf(stdout, " Total bytes Pct of Avg per\n");
+ fprintf(stdout, " all code compile\n");
+ fprintf(stdout, "Total code %12.6g 100%% %8.2f\n",
+ tclTotalCodeBytes, tclTotalCodeBytes/tclNumCompilations);
+ fprintf(stdout, "Header %12.6g %8.2f%% %8.2f\n",
+ totalHeaderBytes,
+ ((totalHeaderBytes * 100.0) / tclTotalCodeBytes),
+ totalHeaderBytes/tclNumCompilations);
+ fprintf(stdout, "Instructions %12.6g %8.2f%% %8.2f\n",
+ tclTotalInstBytes,
+ ((tclTotalInstBytes * 100.0) / tclTotalCodeBytes),
+ tclTotalInstBytes/tclNumCompilations);
+ fprintf(stdout, "Objects %12.6g %8.2f%% %8.2f\n",
+ tclTotalObjBytes,
+ ((tclTotalObjBytes * 100.0) / tclTotalCodeBytes),
+ tclTotalObjBytes/tclNumCompilations);
+ fprintf(stdout, "Exception table %12.6g %8.2f%% %8.2f\n",
+ tclTotalExceptBytes,
+ ((tclTotalExceptBytes * 100.0) / tclTotalCodeBytes),
+ tclTotalExceptBytes/tclNumCompilations);
+ fprintf(stdout, "Auxiliary data %12.6g %8.2f%% %8.2f\n",
+ tclTotalAuxBytes,
+ ((tclTotalAuxBytes * 100.0) / tclTotalCodeBytes),
+ tclTotalAuxBytes/tclNumCompilations);
+ fprintf(stdout, "Command map %12.6g %8.2f%% %8.2f\n",
+ tclTotalCmdMapBytes,
+ ((tclTotalCmdMapBytes * 100.0) / tclTotalCodeBytes),
+ tclTotalCmdMapBytes/tclNumCompilations);
+
+ fprintf(stdout, "\nSource and ByteCode size distributions:\n");
+ fprintf(stdout, " binary decade source code\n");
+ for (i = 0; i <= maxSizeDecade; i++) {
+ int decadeLow, decadeHigh;
+
+ if (i == 0) {
+ decadeLow = 0;
+ } else {
+ decadeLow = 1 << i;
+ }
+ decadeHigh = (1 << (i+1)) - 1;
+ fprintf(stdout, " %6d -%6d %6d %6d\n",
+ decadeLow, decadeHigh,
+ tclSourceCount[i], tclByteCodeCount[i]);
+ }
+
+ fprintf(stdout, "\nInstruction counts:\n");
+ for (i = 0; i < 256; i++) {
+ if (instructionCount[i]) {
+ fprintf(stdout, "%20s %8d %6.2f%%\n",
+ opName[i], instructionCount[i],
+ (instructionCount[i] * 100.0)/total);
+ }
+ }
+
+#ifdef TCL_MEM_DEBUG
+ fprintf(stdout, "\nHeap Statistics:\n");
+ TclDumpMemoryInfo(stdout);
+#endif /* TCL_MEM_DEBUG */
+
+ return TCL_OK;
+}
+#endif /* TCL_COMPILE_STATS */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_GetCommandFromObj --
+ *
+ * Returns the command specified by the name in a Tcl_Obj.
+ *
+ * Results:
+ * Returns a token for the command if it is found. Otherwise, if it
+ * can't be found or there is an error, returns NULL.
+ *
+ * Side effects:
+ * May update the internal representation for the object, caching
+ * the command reference so that the next time this procedure is
+ * called with the same object, the command can be found quickly.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Command
+Tcl_GetCommandFromObj(interp, objPtr)
+ Tcl_Interp *interp; /* The interpreter in which to resolve the
+ * command and to report errors. */
+ register Tcl_Obj *objPtr; /* The object containing the command's
+ * name. If the name starts with "::", will
+ * be looked up in global namespace. Else,
+ * looked up first in the current namespace
+ * if contextNsPtr is NULL, then in global
+ * namespace. */
+{
+ Interp *iPtr = (Interp *) interp;
+ register ResolvedCmdName *resPtr;
+ register Command *cmdPtr;
+ Namespace *currNsPtr;
+ int result;
+
+ /*
+ * Get the internal representation, converting to a command type if
+ * needed. The internal representation is a ResolvedCmdName that points
+ * to the actual command.
+ */
+
+ if (objPtr->typePtr != &tclCmdNameType) {
+ result = tclCmdNameType.setFromAnyProc(interp, objPtr);
+ if (result != TCL_OK) {
+ return (Tcl_Command) NULL;
+ }
+ }
+ resPtr = (ResolvedCmdName *) objPtr->internalRep.otherValuePtr;
+
+ /*
+ * Get the current namespace.
+ */
+
+ if (iPtr->varFramePtr != NULL) {
+ currNsPtr = iPtr->varFramePtr->nsPtr;
+ } else {
+ currNsPtr = iPtr->globalNsPtr;
+ }
+
+ /*
+ * Check the context namespace and the namespace epoch of the resolved
+ * symbol to make sure that it is fresh. If not, then force another
+ * conversion to the command type, to discard the old rep and create a
+ * new one. Note that we verify that the namespace id of the context
+ * namespace is the same as the one we cached; this insures that the
+ * namespace wasn't deleted and a new one created at the same address
+ * with the same command epoch.
+ */
+
+ cmdPtr = NULL;
+ if ((resPtr != NULL)
+ && (resPtr->refNsPtr == currNsPtr)
+ && (resPtr->refNsId == currNsPtr->nsId)
+ && (resPtr->refNsCmdEpoch == currNsPtr->cmdRefEpoch)) {
+ cmdPtr = resPtr->cmdPtr;
+ if (cmdPtr->cmdEpoch != resPtr->cmdEpoch) {
+ cmdPtr = NULL;
+ }
+ }
+
+ if (cmdPtr == NULL) {
+ result = tclCmdNameType.setFromAnyProc(interp, objPtr);
+ if (result != TCL_OK) {
+ return (Tcl_Command) NULL;
+ }
+ resPtr = (ResolvedCmdName *) objPtr->internalRep.otherValuePtr;
+ if (resPtr != NULL) {
+ cmdPtr = resPtr->cmdPtr;
+ }
+ }
+
+ if (cmdPtr == NULL) {
+ return (Tcl_Command) NULL;
+ }
+ return (Tcl_Command) cmdPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FreeCmdNameInternalRep --
+ *
+ * Frees the resources associated with a cmdName object's internal
+ * representation.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Decrements the ref count of any cached ResolvedCmdName structure
+ * pointed to by the cmdName's internal representation. If this is
+ * the last use of the ResolvedCmdName, it is freed. This in turn
+ * decrements the ref count of the Command structure pointed to by
+ * the ResolvedSymbol, which may free the Command structure.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+FreeCmdNameInternalRep(objPtr)
+ register Tcl_Obj *objPtr; /* CmdName object with internal
+ * representation to free. */
+{
+ register ResolvedCmdName *resPtr =
+ (ResolvedCmdName *) objPtr->internalRep.otherValuePtr;
+
+ if (resPtr != NULL) {
+ /*
+ * Decrement the reference count of the ResolvedCmdName structure.
+ * If there are no more uses, free the ResolvedCmdName structure.
+ */
+
+ resPtr->refCount--;
+ if (resPtr->refCount == 0) {
+ /*
+ * Now free the cached command, unless it is still in its
+ * hash table or if there are other references to it
+ * from other cmdName objects.
+ */
+
+ Command *cmdPtr = resPtr->cmdPtr;
+ TclCleanupCommand(cmdPtr);
+ ckfree((char *) resPtr);
+ }
+ }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DupCmdNameInternalRep --
+ *
+ * Initialize the internal representation of an cmdName Tcl_Obj to a
+ * copy of the internal representation of an existing cmdName object.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * "copyPtr"s internal rep is set to point to the ResolvedCmdName
+ * structure corresponding to "srcPtr"s internal rep. Increments the
+ * ref count of the ResolvedCmdName structure pointed to by the
+ * cmdName's internal representation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+DupCmdNameInternalRep(srcPtr, copyPtr)
+ Tcl_Obj *srcPtr; /* Object with internal rep to copy. */
+ register Tcl_Obj *copyPtr; /* Object with internal rep to set. */
+{
+ register ResolvedCmdName *resPtr =
+ (ResolvedCmdName *) srcPtr->internalRep.otherValuePtr;
+
+ copyPtr->internalRep.twoPtrValue.ptr1 = (VOID *) resPtr;
+ copyPtr->internalRep.twoPtrValue.ptr2 = NULL;
+ if (resPtr != NULL) {
+ resPtr->refCount++;
+ }
+ copyPtr->typePtr = &tclCmdNameType;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SetCmdNameFromAny --
+ *
+ * Generate an cmdName internal form for the Tcl object "objPtr".
+ *
+ * Results:
+ * The return value is a standard Tcl result. The conversion always
+ * succeeds and TCL_OK is returned.
+ *
+ * Side effects:
+ * A pointer to a ResolvedCmdName structure that holds a cached pointer
+ * to the command with a name that matches objPtr's string rep is
+ * stored as objPtr's internal representation. This ResolvedCmdName
+ * pointer will be NULL if no matching command was found. The ref count
+ * of the cached Command's structure (if any) is also incremented.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+SetCmdNameFromAny(interp, objPtr)
+ Tcl_Interp *interp; /* Used for error reporting if not NULL. */
+ register Tcl_Obj *objPtr; /* The object to convert. */
+{
+ Interp *iPtr = (Interp *) interp;
+ char *name;
+ Tcl_Command cmd;
+ register Command *cmdPtr;
+ Namespace *currNsPtr;
+ register ResolvedCmdName *resPtr;
+
+ /*
+ * Get "objPtr"s string representation. Make it up-to-date if necessary.
+ */
+
+ name = objPtr->bytes;
+ if (name == NULL) {
+ name = Tcl_GetStringFromObj(objPtr, (int *) NULL);
+ }
+
+ /*
+ * Find the Command structure, if any, that describes the command called
+ * "name". Build a ResolvedCmdName that holds a cached pointer to this
+ * Command, and bump the reference count in the referenced Command
+ * structure. A Command structure will not be deleted as long as it is
+ * referenced from a CmdName object.
+ */
+
+ cmd = Tcl_FindCommand(interp, name, (Tcl_Namespace *) NULL,
+ /*flags*/ 0);
+ cmdPtr = (Command *) cmd;
+ if (cmdPtr != NULL) {
+ /*
+ * Get the current namespace.
+ */
+
+ if (iPtr->varFramePtr != NULL) {
+ currNsPtr = iPtr->varFramePtr->nsPtr;
+ } else {
+ currNsPtr = iPtr->globalNsPtr;
+ }
+
+ cmdPtr->refCount++;
+ resPtr = (ResolvedCmdName *) ckalloc(sizeof(ResolvedCmdName));
+ resPtr->cmdPtr = cmdPtr;
+ resPtr->refNsPtr = currNsPtr;
+ resPtr->refNsId = currNsPtr->nsId;
+ resPtr->refNsCmdEpoch = currNsPtr->cmdRefEpoch;
+ resPtr->cmdEpoch = cmdPtr->cmdEpoch;
+ resPtr->refCount = 1;
+ } else {
+ resPtr = NULL; /* no command named "name" was found */
+ }
+
+ /*
+ * Free the old internalRep before setting the new one. We do this as
+ * late as possible to allow the conversion code, in particular
+ * GetStringFromObj, to use that old internalRep. If no Command
+ * structure was found, leave NULL as the cached value.
+ */
+
+ if ((objPtr->typePtr != NULL)
+ && (objPtr->typePtr->freeIntRepProc != NULL)) {
+ objPtr->typePtr->freeIntRepProc(objPtr);
+ }
+
+ objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) resPtr;
+ objPtr->internalRep.twoPtrValue.ptr2 = NULL;
+ objPtr->typePtr = &tclCmdNameType;
+ return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * UpdateStringOfCmdName --
+ *
+ * Update the string representation for an cmdName object.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Generates a panic.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+UpdateStringOfCmdName(objPtr)
+ Tcl_Obj *objPtr; /* CmdName obj to update string rep. */
+{
+ /*
+ * This procedure is never invoked since the internal representation of
+ * a cmdName object is never modified.
+ */
+
+ panic("UpdateStringOfCmdName should never be invoked");
+}
+
+#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 char *
+StringForResultCode(result)
+ int result; /* The Tcl result code for which to
+ * generate a string. */
+{
+ static char buf[20];
+
+ if ((result >= TCL_OK) && (result <= TCL_CONTINUE)) {
+ return resultStrings[result];
+ }
+ TclFormatInt(buf, result);
+ return buf;
+}
+#endif /* TCL_COMPILE_DEBUG */