/*
* tclExecute.c --
*
* This file contains procedures that execute byte-compiled Tcl commands.
*
* Copyright (c) 1996-1997 Sun Microsystems, Inc.
* Copyright (c) 1998-2000 by Scriptics Corporation.
* Copyright (c) 2001 by Kevin B. Kenny. All rights reserved.
* Copyright (c) 2002-2005 by Miguel Sofer.
* Copyright (c) 2005-2007 by Donal K. Fellows.
*
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tclExecute.c,v 1.268 2007/04/03 01:34:37 msofer Exp $
*/
#include "tclInt.h"
#include "tclCompile.h"
#include "tommath.h"
#include <math.h>
#include <float.h>
/*
* Hack to determine whether we may expect IEEE floating point. The hack is
* formally incorrect in that non-IEEE platforms might have the same precision
* and range, but VAX, IBM, and Cray do not; are there any other floating
* point units that we might care about?
*/
#if (FLT_RADIX == 2) && (DBL_MANT_DIG == 53) && (DBL_MAX_EXP == 1024)
#define IEEE_FLOATING_POINT
#endif
/*
* The stuff below is a bit of a hack so that this file can be used in
* environments that include no UNIX.
* TODO: Does this serve any purpose anymore?
*/
#ifdef TCL_GENERIC_ONLY
# ifndef NO_FLOAT_H
# include <float.h>
# else /* NO_FLOAT_H */
# ifndef NO_VALUES_H
# include <values.h>
# endif /* !NO_VALUES_H */
# endif /* !NO_FLOAT_H */
#endif /* !TCL_GENERIC_ONLY */
/*
* A mask (should be 2**n-1) that is used to work out when the bytecode engine
* should call Tcl_AsyncReady() to see whether there is a signal that needs
* handling.
*/
#ifndef ASYNC_CHECK_COUNT_MASK
# define ASYNC_CHECK_COUNT_MASK 63
#endif /* !ASYNC_CHECK_COUNT_MASK */
/*
* Boolean flag indicating whether the Tcl bytecode interpreter has been
* initialized.
*/
static int execInitialized = 0;
TCL_DECLARE_MUTEX(execMutex)
#ifdef TCL_COMPILE_DEBUG
/*
* Variable that controls whether execution tracing is enabled and, if so,
* what level of tracing is desired:
* 0: no execution tracing
* 1: trace invocations of Tcl procs only
* 2: trace invocations of all (not compiled away) commands
* 3: display each instruction executed
* This variable is linked to the Tcl variable "tcl_traceExec".
*/
int tclTraceExec = 0;
#endif
/*
* Mapping from expression instruction opcodes to strings; used for error
* messages. Note that these entries must match the order and number of the
* expression opcodes (e.g., INST_LOR) in tclCompile.h.
*
* Does not include the string for INST_EXPON (and beyond), as that is
* disjoint for backward-compatability reasons
*/
static const char *operatorStrings[] = {
"||", "&&", "|", "^", "&", "==", "!=", "<", ">", "<=", ">=", "<<", ">>",
"+", "-", "*", "/", "%", "+", "-", "~", "!",
"BUILTIN FUNCTION", "FUNCTION",
"", "", "", "", "", "", "", "", "eq", "ne"
};
/*
* 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
/*
* These are used by evalstats to monitor object usage in Tcl.
*/
#ifdef TCL_COMPILE_STATS
long tclObjsAlloced = 0;
long tclObjsFreed = 0;
long tclObjsShared[TCL_MAX_SHARED_OBJ_STATS] = { 0, 0, 0, 0, 0 };
#endif /* TCL_COMPILE_STATS */
/*
* The new macro for ending an instruction; note that a reasonable C-optimiser
* will resolve all branches at compile time. (result) is always a constant;
* the macro NEXT_INST_F handles constant (nCleanup), NEXT_INST_V is resolved
* at runtime for variable (nCleanup).
*
* ARGUMENTS:
* pcAdjustment: how much to increment pc
* nCleanup: how many objects to remove from the stack
* resultHandling: 0 indicates no object should be pushed on the stack;
* otherwise, push objResultPtr. If (result < 0), objResultPtr already
* has the correct reference count.
*/
#define NEXT_INST_F(pcAdjustment, nCleanup, resultHandling) \
if (nCleanup == 0) {\
if (resultHandling != 0) {\
if ((resultHandling) > 0) {\
PUSH_OBJECT(objResultPtr);\
} else {\
*(++tosPtr) = objResultPtr;\
}\
} \
pc += (pcAdjustment);\
goto cleanup0;\
} else if (resultHandling != 0) {\
if ((resultHandling) > 0) {\
Tcl_IncrRefCount(objResultPtr);\
}\
pc += (pcAdjustment);\
switch (nCleanup) {\
case 1: goto cleanup1_pushObjResultPtr;\
case 2: goto cleanup2_pushObjResultPtr;\
default: Tcl_Panic("bad usage of macro NEXT_INST_F");\
}\
} else {\
pc += (pcAdjustment);\
switch (nCleanup) {\
case 1: goto cleanup1;\
case 2: goto cleanup2;\
default: Tcl_Panic("bad usage of macro NEXT_INST_F");\
}\
}
#define NEXT_INST_V(pcAdjustment, nCleanup, resultHandling) \
pc += (pcAdjustment);\
cleanup = (nCleanup);\
if (resultHandling) {\
if ((resultHandling) > 0) {\
Tcl_IncrRefCount(objResultPtr);\
}\
goto cleanupV_pushObjResultPtr;\
} else {\
goto cleanupV;\
}
/*
* 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() \
tosPtr = eePtr->tosPtr
#define DECACHE_STACK_INFO() \
eePtr->tosPtr = tosPtr;\
checkInterp = 1
/*
* Macros used to access items on the Tcl evaluation stack. PUSH_OBJECT
* increments the object's ref count since it makes the stack have another
* reference pointing to the object. However, POP_OBJECT does not decrement
* the ref count. This is because the stack may hold the only reference to the
* object, so the object would be destroyed if its ref count were decremented
* before the caller had a chance to, e.g., store it in a variable. It is the
* caller's responsibility to decrement the ref count when it is finished with
* an object.
*
* WARNING! It is essential that objPtr only appear once in the PUSH_OBJECT
* macro. The actual parameter might be an expression with side effects, and
* this ensures that it will be executed only once.
*/
#define PUSH_OBJECT(objPtr) \
Tcl_IncrRefCount(*(++tosPtr) = (objPtr))
#define POP_OBJECT() \
*(tosPtr--)
/*
* 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.
*/
#ifdef TCL_COMPILE_DEBUG
# define TRACE(a) \
if (traceInstructions) { \
fprintf(stdout, "%2d: %2d (%u) %s ", iPtr->numLevels, \
(tosPtr - eePtr->stackPtr), \
(unsigned int)(pc - codePtr->codeStart), \
GetOpcodeName(pc)); \
printf a; \
}
# define TRACE_APPEND(a) \
if (traceInstructions) { \
printf a; \
}
# define TRACE_WITH_OBJ(a, objPtr) \
if (traceInstructions) { \
fprintf(stdout, "%2d: %2d (%u) %s ", iPtr->numLevels, \
(tosPtr - eePtr->stackPtr), \
(unsigned int)(pc - codePtr->codeStart), \
GetOpcodeName(pc)); \
printf a; \
TclPrintObject(stdout, objPtr, 30); \
fprintf(stdout, "\n"); \
}
# define O2S(objPtr) \
(objPtr ? TclGetString(objPtr) : "")
#else /* !TCL_COMPILE_DEBUG */
# define TRACE(a)
# define TRACE_APPEND(a)
# define TRACE_WITH_OBJ(a, objPtr)
# define O2S(objPtr)
#endif /* TCL_COMPILE_DEBUG */
/*
* Macro used in this file to save a function call for common uses of
* TclGetNumberFromObj(). The ANSI C "prototype" is:
*
* MODULE_SCOPE int GetNumberFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
* ClientData *ptrPtr, int *tPtr);
*/
#ifdef NO_WIDE_TYPE
#define GetNumberFromObj(interp, objPtr, ptrPtr, tPtr) \
(((objPtr)->typePtr == &tclIntType) \
? (*(tPtr) = TCL_NUMBER_LONG, \
*(ptrPtr) = (ClientData) \
(&((objPtr)->internalRep.longValue)), TCL_OK) : \
((objPtr)->typePtr == &tclDoubleType) \
? (((TclIsNaN((objPtr)->internalRep.doubleValue)) \
? (*(tPtr) = TCL_NUMBER_NAN) \
: (*(tPtr) = TCL_NUMBER_DOUBLE)), \
*(ptrPtr) = (ClientData) \
(&((objPtr)->internalRep.doubleValue)), TCL_OK) : \
((((objPtr)->typePtr == NULL) && ((objPtr)->bytes == NULL)) || \
(((objPtr)->bytes != NULL) && ((objPtr)->length == 0))) \
? TCL_ERROR : \
TclGetNumberFromObj((interp), (objPtr), (ptrPtr), (tPtr)))
#else
#define GetNumberFromObj(interp, objPtr, ptrPtr, tPtr) \
(((objPtr)->typePtr == &tclIntType) \
? (*(tPtr) = TCL_NUMBER_LONG, \
*(ptrPtr) = (ClientData) \
(&((objPtr)->internalRep.longValue)), TCL_OK) : \
((objPtr)->typePtr == &tclWideIntType) \
? (*(tPtr) = TCL_NUMBER_WIDE, \
*(ptrPtr) = (ClientData) \
(&((objPtr)->internalRep.wideValue)), TCL_OK) : \
((objPtr)->typePtr == &tclDoubleType) \
? (((TclIsNaN((objPtr)->internalRep.doubleValue)) \
? (*(tPtr) = TCL_NUMBER_NAN) \
: (*(tPtr) = TCL_NUMBER_DOUBLE)), \
*(ptrPtr) = (ClientData) \
(&((objPtr)->internalRep.doubleValue)), TCL_OK) : \
((((objPtr)->typePtr == NULL) && ((objPtr)->bytes == NULL)) || \
(((objPtr)->bytes != NULL) && ((objPtr)->length == 0))) \
? TCL_ERROR : \
TclGetNumberFromObj((interp), (objPtr), (ptrPtr), (tPtr)))
#endif
/*
* Macro used in this file to save a function call for common uses of
* Tcl_GetBooleanFromObj(). The ANSI C "prototype" is:
*
* MODULE_SCOPE int TclGetBooleanFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
* int *boolPtr);
*/
#define TclGetBooleanFromObj(interp, objPtr, boolPtr) \
((((objPtr)->typePtr == &tclIntType) \
|| ((objPtr)->typePtr == &tclBooleanType)) \
? (*(boolPtr) = ((objPtr)->internalRep.longValue!=0), TCL_OK) \
: Tcl_GetBooleanFromObj((interp), (objPtr), (boolPtr)))
/*
* Macro used in this file to save a function call for common uses of
* Tcl_GetWideIntFromObj(). The ANSI C "prototype" is:
*
* MODULE_SCOPE int TclGetWideIntFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
* Tcl_WideInt *wideIntPtr);
*/
#ifdef NO_WIDE_TYPE
#define TclGetWideIntFromObj(interp, objPtr, wideIntPtr) \
(((objPtr)->typePtr == &tclIntType) \
? (*(wideIntPtr) = (Tcl_WideInt) \
((objPtr)->internalRep.longValue), TCL_OK) : \
Tcl_GetWideIntFromObj((interp), (objPtr), (wideIntPtr)))
#else
#define TclGetWideIntFromObj(interp, objPtr, wideIntPtr) \
(((objPtr)->typePtr == &tclWideIntType) \
? (*(wideIntPtr) = (objPtr)->internalRep.wideValue, TCL_OK) : \
((objPtr)->typePtr == &tclIntType) \
? (*(wideIntPtr) = (Tcl_WideInt) \
((objPtr)->internalRep.longValue), TCL_OK) : \
Tcl_GetWideIntFromObj((interp), (objPtr), (wideIntPtr)))
#endif
static Tcl_ObjType dictIteratorType = {
"dictIterator",
NULL, NULL, NULL, NULL
};
/*
* Declarations for local procedures to this file:
*/
#ifdef TCL_COMPILE_STATS
static int EvalStatsCmd(ClientData clientData,
Tcl_Interp *interp, int objc,
Tcl_Obj *const objv[]);
#endif /* TCL_COMPILE_STATS */
#ifdef TCL_COMPILE_DEBUG
static char * GetOpcodeName(unsigned char *pc);
#endif /* TCL_COMPILE_DEBUG */
static ExceptionRange * GetExceptRangeForPc(unsigned char *pc, int catchOnly,
ByteCode *codePtr);
static const char * GetSrcInfoForPc(unsigned char *pc, ByteCode *codePtr,
int *lengthPtr);
static void GrowEvaluationStack(ExecEnv *eePtr, int growth);
static void IllegalExprOperandType(Tcl_Interp *interp,
unsigned char *pc, Tcl_Obj *opndPtr);
static void InitByteCodeExecution(Tcl_Interp *interp);
#ifdef TCL_COMPILE_DEBUG
static void PrintByteCodeInfo(ByteCode *codePtr);
static char * StringForResultCode(int result);
static void ValidatePcAndStackTop(ByteCode *codePtr,
unsigned char *pc, int stackTop,
int stackLowerBound, int checkStack);
#endif /* TCL_COMPILE_DEBUG */
/*
*----------------------------------------------------------------------
*
* InitByteCodeExecution --
*
* This procedure is called once to initialize the Tcl bytecode
* interpreter.
*
* Results:
* None.
*
* Side effects:
* This procedure initializes the array of instruction names. If
* compiling with the TCL_COMPILE_STATS flag, it initializes the array
* that counts the executions of each instruction and it creates the
* "evalstats" command. It also establishes the link between the Tcl
* "tcl_traceExec" and C "tclTraceExec" variables.
*
*----------------------------------------------------------------------
*/
static void
InitByteCodeExecution(
Tcl_Interp *interp) /* Interpreter for which the Tcl variable
* "tcl_traceExec" is linked to control
* instruction tracing. */
{
#ifdef TCL_COMPILE_DEBUG
if (Tcl_LinkVar(interp, "tcl_traceExec", (char *) &tclTraceExec,
TCL_LINK_INT) != TCL_OK) {
Tcl_Panic("InitByteCodeExecution: can't create link for tcl_traceExec variable");
}
#endif
#ifdef TCL_COMPILE_STATS
Tcl_CreateObjCommand(interp, "evalstats", EvalStatsCmd,
(ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
#endif /* TCL_COMPILE_STATS */
}
/*
*----------------------------------------------------------------------
*
* TclCreateExecEnv --
*
* This procedure creates a new execution environment for Tcl bytecode
* execution. An ExecEnv points to a Tcl evaluation stack. An ExecEnv is
* typically created once for each Tcl interpreter (Interp structure) and
* recursively passed to 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(
Tcl_Interp *interp) /* Interpreter for which the execution
* environment is being created. */
{
ExecEnv *eePtr = (ExecEnv *) ckalloc(sizeof(ExecEnv));
Tcl_Obj **stackPtr;
stackPtr = (Tcl_Obj **)
ckalloc((size_t) (TCL_STACK_INITIAL_SIZE * sizeof(Tcl_Obj *)));
/*
* Use the bottom pointer to keep a reference count; the execution
* environment holds a reference.
*/
stackPtr++;
eePtr->stackPtr = stackPtr;
stackPtr[-1] = (Tcl_Obj *) ((char *) 1);
eePtr->tosPtr = stackPtr - 1;
eePtr->endPtr = stackPtr + (TCL_STACK_INITIAL_SIZE - 2);
TclNewBooleanObj(eePtr->constants[0], 0);
Tcl_IncrRefCount(eePtr->constants[0]);
TclNewBooleanObj(eePtr->constants[1], 1);
Tcl_IncrRefCount(eePtr->constants[1]);
Tcl_MutexLock(&execMutex);
if (!execInitialized) {
TclInitAuxDataTypeTable();
InitByteCodeExecution(interp);
execInitialized = 1;
}
Tcl_MutexUnlock(&execMutex);
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(
ExecEnv *eePtr) /* Execution environment to free. */
{
if (eePtr->stackPtr[-1] == (Tcl_Obj *) ((char *) 1)) {
ckfree((char *) (eePtr->stackPtr-1));
} else {
Tcl_Panic("freeing an execEnv whose stack is still in use");
}
TclDecrRefCount(eePtr->constants[0]);
TclDecrRefCount(eePtr->constants[1]);
ckfree((char *) eePtr);
}
/*
*----------------------------------------------------------------------
*
* TclFinalizeExecution --
*
* Finalizes the execution environment setup so that it can be later
* reinitialized.
*
* Results:
* None.
*
* Side effects:
* After this call, the next time TclCreateExecEnv will be called it will
* call InitByteCodeExecution.
*
*----------------------------------------------------------------------
*/
void
TclFinalizeExecution(void)
{
Tcl_MutexLock(&execMutex);
execInitialized = 0;
Tcl_MutexUnlock(&execMutex);
TclFinalizeAuxDataTypeTable();
}
/*
*----------------------------------------------------------------------
*
* GrowEvaluationStack --
*
* This procedure grows a Tcl evaluation stack stored in an ExecEnv.
*
* Results:
* None.
*
* Side effects:
* The size of the evaluation stack is grown.
*
*----------------------------------------------------------------------
*/
static void
GrowEvaluationStack(
ExecEnv *eePtr, /* Points to the ExecEnv with an evaluation
* stack to enlarge. */
int growth)
{
Tcl_Obj **newStackPtr, **oldStackPtr = eePtr->stackPtr;
int currElems, newBytes, newElems;
int needed = growth - (eePtr->endPtr - eePtr->tosPtr);
char *refCount;
if (needed <= 0) {
return;
}
/*
* The current Tcl stack elements are stored from *(eePtr->stackPtr) to
* *(eePtr->endPtr) (inclusive).
*/
currElems = (eePtr->endPtr - eePtr->stackPtr + 1);
newElems = 2*currElems;
while (needed > newElems - currElems) {
newElems *= 2;
}
newBytes = newElems * sizeof(Tcl_Obj *);
/*
* We keep the stack reference count as a (char *), as that works nicely
* as a portable pointer-sized counter.
*/
refCount = (char *) oldStackPtr[-1];
if (refCount == (char *) 1) {
newStackPtr = (Tcl_Obj **) ckrealloc(
(char *) (oldStackPtr - 1), newBytes);
newStackPtr++;
} else {
/* Can't free oldStackPtr, so can't use ckrealloc */
int currBytes = currElems * sizeof(Tcl_Obj *);
newStackPtr = (Tcl_Obj **) ckalloc(newBytes);
newStackPtr++;
memcpy(newStackPtr, oldStackPtr, currBytes);
oldStackPtr[-1] = (Tcl_Obj *) (refCount-1);
newStackPtr[-1] = (Tcl_Obj *) ((char *) 1);
}
eePtr->stackPtr = newStackPtr;
eePtr->endPtr = newStackPtr + (newElems-2); /* index of last usable item */
eePtr->tosPtr = newStackPtr + (eePtr->tosPtr - oldStackPtr);
}
/*
*--------------------------------------------------------------
*
* TclStackAlloc --
*
* Allocate memory from the execution stack; it has to be returned later
* with a call to TclStackFree
*
* Results:
* A pointer to the first byte allocated, or panics if the allocation did
* not succeed.
*
* Side effects:
* The execution stack may be grown.
*
*--------------------------------------------------------------
*/
char *
TclStackAlloc(
Tcl_Interp *interp,
int numBytes)
{
Interp *iPtr = (Interp *) interp;
ExecEnv *eePtr = iPtr->execEnvPtr;
/*
* Add two words to store
* - a pointer to the used execution stack
* - the number of words reserved
* These will be used later by TclStackFree.
*/
int numWords = (numBytes + 3*sizeof(void *) - 1)/sizeof(void *);
Tcl_Obj **tosPtr = (GrowEvaluationStack(eePtr, numWords), eePtr->tosPtr);
/*
* Increase the stack's reference count, to make sure it is not freed
* prematurely.
*/
char **stackRefCountPtr = (char **) (eePtr->stackPtr-1);
++*stackRefCountPtr;
/*
* Reserve the space in the exec stack, and store the data for freeing.
*/
eePtr->tosPtr += numWords;
*(eePtr->tosPtr-1) = (Tcl_Obj *) stackRefCountPtr;
*(eePtr->tosPtr) = (Tcl_Obj *) INT2PTR(numWords);
return (char *) (tosPtr+1);
}
void
TclStackFree(
Tcl_Interp *interp)
{
Interp *iPtr = (Interp *) interp;
ExecEnv *eePtr = iPtr->execEnvPtr;
char **stackRefCountPtr;
stackRefCountPtr = (char **) *(eePtr->tosPtr-1);
eePtr->tosPtr -= PTR2INT(*(eePtr->tosPtr));
--*stackRefCountPtr;
if (*stackRefCountPtr == (char *) 0) {
ckfree((VOID *) stackRefCountPtr);
}
}
/*
*--------------------------------------------------------------
*
* Tcl_ExprObj --
*
* Evaluate an expression in a Tcl_Obj.
*
* Results:
* A standard Tcl object result. If the result is other than TCL_OK, then
* the interpreter's result contains an error message. If the result is
* TCL_OK, then a pointer to the expression's result value object is
* stored in resultPtrPtr. In that case, the object's ref count is
* incremented to reflect the reference returned to the caller; the
* caller is then responsible for the resulting object and must, for
* example, decrement the ref count when it is finished with the object.
*
* Side effects:
* Any side effects caused by subcommands in the expression, if any. The
* interpreter result is not modified unless there is an error.
*
*--------------------------------------------------------------
*/
int
Tcl_ExprObj(
Tcl_Interp *interp, /* Context in which to evaluate the
* expression. */
register Tcl_Obj *objPtr, /* Points to Tcl object containing expression
* to evaluate. */
Tcl_Obj **resultPtrPtr) /* Where the Tcl_Obj* that is the expression
* result is stored if no errors occur. */
{
Interp *iPtr = (Interp *) interp;
CompileEnv compEnv; /* Compilation environment structure allocated
* in frame. */
LiteralTable *localTablePtr = &(compEnv.localLitTable);
register ByteCode *codePtr = NULL;
/* Tcl Internal type of bytecode. Initialized
* to avoid compiler warning. */
AuxData *auxDataPtr;
LiteralEntry *entryPtr;
Tcl_Obj *saveObjPtr, *resultPtr;
char *string;
int length, i, result;
/*
* First handle some common expressions specially.
*/
string = Tcl_GetStringFromObj(objPtr, &length);
if (length == 1) {
if (*string == '0') {
TclNewBooleanObj(resultPtr, 0);
Tcl_IncrRefCount(resultPtr);
*resultPtrPtr = resultPtr;
return TCL_OK;
} else if (*string == '1') {
TclNewBooleanObj(resultPtr, 1);
Tcl_IncrRefCount(resultPtr);
*resultPtrPtr = resultPtr;
return TCL_OK;
}
} else if ((length == 2) && (*string == '!')) {
if (*(string+1) == '0') {
TclNewBooleanObj(resultPtr, 1);
Tcl_IncrRefCount(resultPtr);
*resultPtrPtr = resultPtr;
return TCL_OK;
} else if (*(string+1) == '1') {
TclNewBooleanObj(resultPtr, 0);
Tcl_IncrRefCount(resultPtr);
*resultPtrPtr = resultPtr;
return TCL_OK;
}
}
/*
* Get the ByteCode from the object. If it exists, make sure it hasn't
* been invalidated by, e.g., someone redefining a command with a compile
* procedure (this might make the compiled code wrong). If necessary,
* convert the object to be a ByteCode object and compile it. Also, if the
* code was compiled in/for a different interpreter, we recompile it.
*
* Precompiled expressions, however, are immutable and therefore they are
* not recompiled, even if the epoch has changed.
*/
if (objPtr->typePtr == &tclByteCodeType) {
codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr;
if (((Interp *) *codePtr->interpHandle != iPtr)
|| (codePtr->compileEpoch != iPtr->compileEpoch)) {
if (codePtr->flags & TCL_BYTECODE_PRECOMPILED) {
if ((Interp *) *codePtr->interpHandle != iPtr) {
Tcl_Panic("Tcl_ExprObj: compiled expression jumped interps");
}
codePtr->compileEpoch = iPtr->compileEpoch;
} else {
objPtr->typePtr->freeIntRepProc(objPtr);
objPtr->typePtr = (Tcl_ObjType *) NULL;
}
}
}
if (objPtr->typePtr != &tclByteCodeType) {
/*
* TIP #280: No invoker (yet) - Expression compilation
*/
TclInitCompileEnv(interp, &compEnv, string, length, NULL, 0);
result = TclCompileExpr(interp, string, length, &compEnv);
/*
* Free the compilation environment's literal table bucket array if it
* was dynamically allocated.
*/
if (localTablePtr->buckets != localTablePtr->staticBuckets) {
ckfree((char *) localTablePtr->buckets);
}
if (result != TCL_OK) {
/*
* Compilation errors. Free storage allocated for compilation.
*/
#ifdef TCL_COMPILE_DEBUG
TclVerifyLocalLiteralTable(&compEnv);
#endif /*TCL_COMPILE_DEBUG*/
entryPtr = compEnv.literalArrayPtr;
for (i = 0; i < compEnv.literalArrayNext; i++) {
TclReleaseLiteral(interp, entryPtr->objPtr);
entryPtr++;
}
#ifdef TCL_COMPILE_DEBUG
TclVerifyGlobalLiteralTable(iPtr);
#endif /*TCL_COMPILE_DEBUG*/
auxDataPtr = compEnv.auxDataArrayPtr;
for (i = 0; i < compEnv.auxDataArrayNext; i++) {
if (auxDataPtr->type->freeProc != NULL) {
auxDataPtr->type->freeProc(auxDataPtr->clientData);
}
auxDataPtr++;
}
TclFreeCompileEnv(&compEnv);
return result;
}
/*
* Successful compilation. If the expression yielded no instructions,
* push an zero object as the expression's result.
*/
if (compEnv.codeNext == compEnv.codeStart) {
TclEmitPush(TclRegisterNewLiteral(&compEnv, "0", 1),
&compEnv);
}
/*
* Add a "done" instruction as the last instruction and change the
* object into a ByteCode object. Ownership of the literal objects and
* aux data items is given to the ByteCode object.
*/
TclEmitOpcode(INST_DONE, &compEnv);
TclInitByteCodeObj(objPtr, &compEnv);
TclFreeCompileEnv(&compEnv);
codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr;
#ifdef TCL_COMPILE_DEBUG
if (tclTraceCompile == 2) {
TclPrintByteCodeObj(interp, objPtr);
}
#endif /* TCL_COMPILE_DEBUG */
}
/*
* Execute the expression after first saving the interpreter's result.
*/
saveObjPtr = Tcl_GetObjResult(interp);
Tcl_IncrRefCount(saveObjPtr);
Tcl_ResetResult(interp);
/*
* Increment the code's ref count while it is being executed. If
* afterwards no references to it remain, free the code.
*/
codePtr->refCount++;
result = TclExecuteByteCode(interp, codePtr);
codePtr->refCount--;
if (codePtr->refCount <= 0) {
TclCleanupByteCode(codePtr);
objPtr->typePtr = NULL;
objPtr->internalRep.otherValuePtr = NULL;
}
/*
* If the expression evaluated successfully, store a pointer to its value
* object in resultPtrPtr then restore the old interpreter result. We
* increment the object's ref count to reflect the reference that we are
* returning to the caller. We also decrement the ref count of the
* interpreter's result object after calling Tcl_SetResult since we next
* store into that field directly.
*/
if (result == TCL_OK) {
*resultPtrPtr = iPtr->objResultPtr;
Tcl_IncrRefCount(iPtr->objResultPtr);
Tcl_SetObjResult(interp, saveObjPtr);
}
TclDecrRefCount(saveObjPtr);
return result;
}
/*
*----------------------------------------------------------------------
*
* TclCompEvalObj --
*
* This procedure evaluates the script contained in a Tcl_Obj by first
* compiling it and then passing it to TclExecuteByteCode.
*
* 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
TclCompEvalObj(
Tcl_Interp *interp,
Tcl_Obj *objPtr,
const CmdFrame *invoker,
int word)
{
register Interp *iPtr = (Interp *) interp;
register ByteCode *codePtr; /* Tcl Internal type of bytecode. */
int result;
Namespace *namespacePtr;
/*
* Check that the interpreter is ready to execute scripts
*/
iPtr->numLevels++;
if (TclInterpReady(interp) == TCL_ERROR) {
iPtr->numLevels--;
return TCL_ERROR;
}
if (iPtr->varFramePtr != NULL) {
namespacePtr = iPtr->varFramePtr->nsPtr;
} else {
namespacePtr = iPtr->globalNsPtr;
}
/*
* If the object is not already of tclByteCodeType, compile it (and reset
* the compilation flags in the interpreter; this should be done after any
* compilation). Otherwise, check that it is "fresh" enough.
*/
if (objPtr->typePtr != &tclByteCodeType) {
recompileObj:
iPtr->errorLine = 1;
/*
* TIP #280. Remember the invoker for a moment in the interpreter
* structures so that the byte code compiler can pick it up when
* initializing the compilation environment, i.e. the extended
* location information.
*/
iPtr->invokeCmdFramePtr = invoker;
iPtr->invokeWord = word;
result = tclByteCodeType.setFromAnyProc(interp, objPtr);
iPtr->invokeCmdFramePtr = NULL;
if (result != TCL_OK) {
iPtr->numLevels--;
return result;
}
codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr;
} else {
/*
* Make sure the Bytecode hasn't been invalidated by, e.g., someone
* redefining a command with a compile procedure (this might make the
* compiled code wrong). The object needs to be recompiled if it was
* compiled in/for a different interpreter, or for a different
* namespace, or for the same namespace but with different name
* resolution rules. Precompiled objects, however, are immutable and
* therefore they are not recompiled, even if the epoch has changed.
*
* To be pedantically correct, we should also check that the
* originating procPtr is the same as the current context procPtr
* (assuming one exists at all - none for global level). This code is
* #def'ed out because [info body] was changed to never return a
* bytecode type object, which should obviate us from the extra checks
* here.
*/
codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr;
if (((Interp *) *codePtr->interpHandle != iPtr)
|| (codePtr->compileEpoch != iPtr->compileEpoch)
#ifdef CHECK_PROC_ORIGINATION /* [Bug: 3412 Pedantic] */
|| (codePtr->procPtr != NULL && !(iPtr->varFramePtr &&
iPtr->varFramePtr->procPtr == codePtr->procPtr))
#endif
|| (codePtr->nsPtr != namespacePtr)
|| (codePtr->nsEpoch != namespacePtr->resolverEpoch)) {
if (codePtr->flags & TCL_BYTECODE_PRECOMPILED) {
if ((Interp *) *codePtr->interpHandle != iPtr) {
Tcl_Panic("Tcl_EvalObj: compiled script jumped interps");
}
codePtr->compileEpoch = iPtr->compileEpoch;
} else {
/*
* This byteCode is invalid: free it and recompile
*/
objPtr->typePtr->freeIntRepProc(objPtr);
goto recompileObj;
}
}
}
/*
* Increment the code's ref count while it is being executed. If
* afterwards no references to it remain, free the code.
*/
codePtr->refCount++;
result = TclExecuteByteCode(interp, codePtr);
codePtr->refCount--;
if (codePtr->refCount <= 0) {
TclCleanupByteCode(codePtr);
}
iPtr->numLevels--;
return result;
}
/*
*----------------------------------------------------------------------
*
* TclIncrObj --
*
* Increment an integeral value in a Tcl_Obj by an integeral value held
* in another Tcl_Obj. Caller is responsible for making sure we can
* update the first object.
*
* Results:
* TCL_ERROR if either object is non-integer, and TCL_OK otherwise. On
* error, an error message is left in the interpreter (if it is not NULL,
* of course).
*
* Side effects:
* valuePtr gets the new incrmented value.
*
*----------------------------------------------------------------------
*/
int
TclIncrObj(
Tcl_Interp *interp,
Tcl_Obj *valuePtr,
Tcl_Obj *incrPtr)
{
ClientData ptr1, ptr2;
int type1, type2;
mp_int value, incr;
if (Tcl_IsShared(valuePtr)) {
Tcl_Panic("%s called with shared object", "TclIncrObj");
}
if (GetNumberFromObj(NULL, valuePtr, &ptr1, &type1) != TCL_OK) {
/* Produce error message (reparse?!) */
return Tcl_GetIntFromObj(interp, valuePtr, &type1);
}
if (GetNumberFromObj(NULL, incrPtr, &ptr2, &type2) != TCL_OK) {
/* Produce error message (reparse?!) */
Tcl_GetIntFromObj(interp, incrPtr, &type1);
Tcl_AddErrorInfo(interp, "\n (reading increment)");
return TCL_ERROR;
}
if ((type1 == TCL_NUMBER_LONG) && (type2 == TCL_NUMBER_LONG)) {
long augend = *((const long *)ptr1);
long addend = *((const long *)ptr2);
long sum = augend + addend;
/*
* Test for overflow.
*/
if ((augend >= 0 || addend >= 0 || sum < 0)
&& (sum >= 0 || addend < 0 || augend < 0)) {
TclSetLongObj(valuePtr, sum);
return TCL_OK;
}
#ifndef TCL_WIDE_INT_IS_LONG
{
Tcl_WideInt w1 = (Tcl_WideInt)augend;
Tcl_WideInt w2 = (Tcl_WideInt)addend;
/*
* We know the sum value is outside the long range, so we use the
* macro form that doesn't range test again.
*/
TclSetWideIntObj(valuePtr, w1 + w2);
return TCL_OK;
}
#endif
}
if ((type1 == TCL_NUMBER_DOUBLE) || (type1 == TCL_NUMBER_NAN)) {
/* Produce error message (reparse?!) */
return Tcl_GetIntFromObj(interp, valuePtr, &type1);
}
if ((type2 == TCL_NUMBER_DOUBLE) || (type2 == TCL_NUMBER_NAN)) {
/* Produce error message (reparse?!) */
Tcl_GetIntFromObj(interp, incrPtr, &type1);
Tcl_AddErrorInfo(interp, "\n (reading increment)");
return TCL_ERROR;
}
#ifndef NO_WIDE_TYPE
if ((type1 != TCL_NUMBER_BIG) && (type2 != TCL_NUMBER_BIG)) {
Tcl_WideInt w1, w2, sum;
TclGetWideIntFromObj(NULL, valuePtr, &w1);
TclGetWideIntFromObj(NULL, incrPtr, &w2);
sum = w1 + w2;
/* Check for overflow */
if ((w1 >= 0 || w2 >= 0 || sum < 0)
&& (w1 < 0 || w2 < 0 || sum >= 0)) {
Tcl_SetWideIntObj(valuePtr, sum);
return TCL_OK;
}
}
#endif
Tcl_TakeBignumFromObj(interp, valuePtr, &value);
Tcl_GetBignumFromObj(interp, incrPtr, &incr);
mp_add(&value, &incr, &value);
mp_clear(&incr);
Tcl_SetBignumObj(valuePtr, &value);
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* 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(
Tcl_Interp *interp, /* Token for command interpreter. */
ByteCode *codePtr) /* The bytecode sequence to interpret. */
{
/*
* Compiler cast directive - not a real variable.
* Interp *iPtr = (Interp *) interp;
*/
#define iPtr ((Interp *) interp)
/*
* Constants: variables that do not change during the execution, used
* sporadically.
*/
ExecEnv *eePtr; /* Points to the execution environment. */
int initStackTop; /* Stack top at start of execution. */
int initCatchTop; /* Catch stack top at start of execution. */
Var *compiledLocals;
Namespace *namespacePtr;
CmdFrame bcFrame; /* TIP #280: Structure for tracking lines. */
/*
* Globals: variables that store state, must remain valid at all times.
*/
int catchTop;
register Tcl_Obj **tosPtr; /* Cached pointer to top of evaluation
* stack. */
register unsigned char *pc = codePtr->codeStart;
/* The current program counter. */
int instructionCount = 0; /* Counter that is used to work out when to
* call Tcl_AsyncReady() */
Tcl_Obj *expandNestList = NULL;
int checkInterp = 0; /* Indicates when a check of interp readyness
* is necessary. Set by DECACHE_STACK_INFO() */
/*
* Transfer variables - needed only between opcodes, but not while
* executing an instruction.
*/
register int cleanup;
Tcl_Obj *objResultPtr;
/*
* Result variable - needed only when going to checkForcatch or other
* error handlers; also used as local in some opcodes.
*/
int result = TCL_OK; /* Return code returned after execution. */
/*
* Locals - variables that are used within opcodes or bounded sections of
* the file (jumps between opcodes within a family).
* NOTE: These are now defined locally where needed.
*/
#ifdef TCL_COMPILE_DEBUG
int traceInstructions = (tclTraceExec == 3);
char cmdNameBuf[21];
#endif
/*
* The execution uses a unified stack: first the catch stack, immediately
* above it the execution stack.
*
* Make sure the catch stack is large enough to hold the maximum number of
* catch commands that could ever be executing at the same time (this will
* be no more than the exception range array's depth). Make sure the
* execution stack is large enough to execute this ByteCode.
*/
eePtr = iPtr->execEnvPtr;
initCatchTop = eePtr->tosPtr - eePtr->stackPtr;
catchTop = initCatchTop;
GrowEvaluationStack(eePtr,
codePtr->maxExceptDepth + codePtr->maxStackDepth);
tosPtr = eePtr->tosPtr + codePtr->maxExceptDepth;
initStackTop = tosPtr - eePtr->stackPtr;
/*
* TIP #280: Initialize the frame. Do not push it yet.
*/
bcFrame.type = ((codePtr->flags & TCL_BYTECODE_PRECOMPILED)
? TCL_LOCATION_PREBC : TCL_LOCATION_BC);
bcFrame.level = (iPtr->cmdFramePtr ? iPtr->cmdFramePtr->level+1 : 1);
bcFrame.framePtr = iPtr->framePtr;
bcFrame.nextPtr = iPtr->cmdFramePtr;
bcFrame.nline = 0;
bcFrame.line = NULL;
bcFrame.data.tebc.codePtr = codePtr;
bcFrame.data.tebc.pc = NULL;
bcFrame.cmd.str.cmd = NULL;
bcFrame.cmd.str.len = 0;
#ifdef TCL_COMPILE_DEBUG
if (tclTraceExec >= 2) {
PrintByteCodeInfo(codePtr);
fprintf(stdout, " Starting stack top=%d\n", initStackTop);
fflush(stdout);
}
#endif
#ifdef TCL_COMPILE_STATS
iPtr->stats.numExecutions++;
#endif
if (iPtr->varFramePtr != NULL) {
namespacePtr = iPtr->varFramePtr->nsPtr;
compiledLocals = iPtr->varFramePtr->compiledLocals;
} else {
namespacePtr = iPtr->globalNsPtr;
compiledLocals = NULL;
}
/*
* Loop executing instructions until a "done" instruction, a TCL_RETURN,
* or some error.
*/
goto cleanup0;
/*
* Targets for standard instruction endings; unrolled for speed in the
* most frequent cases (instructions that consume up to two stack
* elements).
*
* This used to be a "for(;;)" loop, with each instruction doing its own
* cleanup.
*/
{
Tcl_Obj *valuePtr;
cleanupV_pushObjResultPtr:
switch (cleanup) {
case 0:
*(++tosPtr) = (objResultPtr);
goto cleanup0;
default:
cleanup -= 2;
while (cleanup--) {
valuePtr = POP_OBJECT();
TclDecrRefCount(valuePtr);
}
case 2:
cleanup2_pushObjResultPtr:
valuePtr = POP_OBJECT();
TclDecrRefCount(valuePtr);
case 1:
cleanup1_pushObjResultPtr:
valuePtr = *tosPtr;
TclDecrRefCount(valuePtr);
}
*tosPtr = objResultPtr;
goto cleanup0;
cleanupV:
switch (cleanup) {
default:
cleanup -= 2;
while (cleanup--) {
valuePtr = POP_OBJECT();
TclDecrRefCount(valuePtr);
}
case 2:
cleanup2:
valuePtr = POP_OBJECT();
TclDecrRefCount(valuePtr);
case 1:
cleanup1:
valuePtr = POP_OBJECT();
TclDecrRefCount(valuePtr);
case 0:
/*
* We really want to do nothing now, but this is needed for some
* compilers (SunPro CC)
*/
break;
}
}
cleanup0:
#ifdef TCL_COMPILE_DEBUG
/*
* Skip the stack depth check if an expansion is in progress
*/
ValidatePcAndStackTop(codePtr, pc, (tosPtr - eePtr->stackPtr),
initStackTop, /*checkStack*/ (expandNestList == NULL));
if (traceInstructions) {
fprintf(stdout, "%2d: %2d ", iPtr->numLevels, (tosPtr - eePtr->stackPtr));
TclPrintInstruction(codePtr, pc);
fflush(stdout);
}
#endif /* TCL_COMPILE_DEBUG */
#ifdef TCL_COMPILE_STATS
iPtr->stats.instructionCount[*pc]++;
#endif
/*
* Check for asynchronous handlers [Bug 746722]; we do the check every
* ASYNC_CHECK_COUNT_MASK instruction, of the form (2**n-1).
*/
if ((instructionCount++ & ASYNC_CHECK_COUNT_MASK) == 0) {
if (Tcl_AsyncReady()) {
int localResult;
DECACHE_STACK_INFO();
localResult = Tcl_AsyncInvoke(interp, result);
CACHE_STACK_INFO();
if (localResult == TCL_ERROR) {
result = localResult;
goto checkForCatch;
}
}
if (Tcl_LimitReady(interp)) {
int localResult;
DECACHE_STACK_INFO();
localResult = Tcl_LimitCheck(interp);
CACHE_STACK_INFO();
if (localResult == TCL_ERROR) {
result = localResult;
goto checkForCatch;
}
}
}
switch (*pc) {
case INST_RETURN_IMM: {
int code = TclGetInt4AtPtr(pc+1);
int level = TclGetUInt4AtPtr(pc+5);
Tcl_Obj *returnOpts;
TRACE(("%u %u => ", code, level));
returnOpts = POP_OBJECT();
result = TclProcessReturn(interp, code, level, returnOpts);
Tcl_DecrRefCount(returnOpts);
if (result != TCL_OK) {
Tcl_SetObjResult(interp, *tosPtr);
cleanup = 1;
goto processExceptionReturn;
}
TRACE_APPEND(("continuing to next instruction (result=\"%.30s\")",
O2S(objResultPtr)));
NEXT_INST_F(9, 0, 0);
}
case INST_RETURN_STK:
TRACE(("=> "));
objResultPtr = POP_OBJECT();
result = Tcl_SetReturnOptions(interp, POP_OBJECT());
if (result != TCL_OK) {
Tcl_SetObjResult(interp, objResultPtr);
Tcl_DecrRefCount(objResultPtr);
cleanup = 0;
goto processExceptionReturn;
}
TRACE_APPEND(("continuing to next instruction (result=\"%.30s\")",
O2S(objResultPtr)));
NEXT_INST_F(1, 0, -1);
case INST_DONE:
if (tosPtr <= eePtr->stackPtr + initStackTop) {
tosPtr--;
goto abnormalReturn;
}
/*
* Set the interpreter's object result to point to the topmost object
* from the stack, and check for a possible [catch]. The stackTop's
* level and refCount will be handled by "processCatch" or
* "abnormalReturn".
*/
Tcl_SetObjResult(interp, *tosPtr);
#ifdef TCL_COMPILE_DEBUG
TRACE_WITH_OBJ(("=> return code=%d, result=", result),
iPtr->objResultPtr);
if (traceInstructions) {
fprintf(stdout, "\n");
}
#endif
goto checkForCatch;
case INST_PUSH1:
#if !TCL_COMPILE_DEBUG
instPush1Peephole:
#endif
PUSH_OBJECT(codePtr->objArrayPtr[TclGetUInt1AtPtr(pc+1)]);
TRACE_WITH_OBJ(("%u => ", TclGetInt1AtPtr(pc+1)), *tosPtr);
pc += 2;
#if !TCL_COMPILE_DEBUG
/*
* Runtime peephole optimisation: check if we are pushing again.
*/
if (*pc == INST_PUSH1) {
goto instPush1Peephole;
}
#endif
NEXT_INST_F(0, 0, 0);
case INST_PUSH4:
objResultPtr = codePtr->objArrayPtr[TclGetUInt4AtPtr(pc+1)];
TRACE_WITH_OBJ(("%u => ", TclGetUInt4AtPtr(pc+1)), objResultPtr);
NEXT_INST_F(5, 0, 1);
case INST_POP: {
Tcl_Obj *valuePtr;
TRACE_WITH_OBJ(("=> discarding "), *tosPtr);
valuePtr = POP_OBJECT();
TclDecrRefCount(valuePtr);
/*
* Runtime peephole optimisation: an INST_POP is scheduled at the end
* of most commands. If the next instruction is an INST_START_CMD,
* fall through to it.
*/
pc++;
#if !TCL_COMPILE_DEBUG
if (*pc == INST_START_CMD) {
goto instStartCmdPeephole;
}
#endif
NEXT_INST_F(0, 0, 0);
}
case INST_START_CMD:
#if !TCL_COMPILE_DEBUG
instStartCmdPeephole:
#endif
/*
* Remark that if the interpreter is marked for deletion its
* compileEpoch is modified, so that the epoch check also verifies
* that the interp is not deleted. If no outside call has been made
* since the last check, it is safe to omit the check.
*/
iPtr->cmdCount += TclGetUInt4AtPtr(pc+5);
if (!checkInterp ||
(((codePtr->compileEpoch == iPtr->compileEpoch)
&& (codePtr->nsEpoch == namespacePtr->resolverEpoch))
|| (codePtr->flags & TCL_BYTECODE_PRECOMPILED))) {
#if !TCL_COMPILE_DEBUG
/*
* Peephole optimisations: check if there are several
* INST_START_CMD in a row. Many commands start by pushing a
* literal argument or command name; optimise that case too.
*
* TODO: Compiler no longer generates sequences of INST_START_CMD,
* so maybe take some of this peephole out.
*/
while (*(pc += 9) == INST_START_CMD) {
iPtr->cmdCount += TclGetUInt4AtPtr(pc+5);
}
if (*pc == INST_PUSH1) {
goto instPush1Peephole;
}
NEXT_INST_F(0, 0, 0);
#else
NEXT_INST_F(9, 0, 0);
#endif
} else {
const char *bytes;
int length, opnd;
Tcl_Obj *newObjResultPtr;
bytes = GetSrcInfoForPc(pc, codePtr, &length);
DECACHE_STACK_INFO();
result = Tcl_EvalEx(interp, bytes, length, 0);
CACHE_STACK_INFO();
if (result != TCL_OK) {
cleanup = 0;
goto processExceptionReturn;
}
opnd = TclGetUInt4AtPtr(pc+1);
objResultPtr = Tcl_GetObjResult(interp);
TclNewObj(newObjResultPtr);
Tcl_IncrRefCount(newObjResultPtr);
iPtr->objResultPtr = newObjResultPtr;
NEXT_INST_V(opnd, 0, -1);
}
case INST_DUP:
objResultPtr = *tosPtr;
TRACE_WITH_OBJ(("=> "), objResultPtr);
NEXT_INST_F(1, 0, 1);
case INST_OVER: {
int opnd;
opnd = TclGetUInt4AtPtr(pc+1);
objResultPtr = *(tosPtr - opnd);
TRACE_WITH_OBJ(("=> "), objResultPtr);
NEXT_INST_F(5, 0, 1);
}
case INST_CONCAT1: {
int opnd, length, appendLen = 0;
char *bytes, *p;
Tcl_Obj **currPtr;
opnd = TclGetUInt1AtPtr(pc+1);
/*
* Compute the length to be appended.
*/
for (currPtr = tosPtr - (opnd-2); currPtr <= tosPtr; currPtr++) {
bytes = Tcl_GetStringFromObj(*currPtr, &length);
if (bytes != NULL) {
appendLen += length;
}
}
/*
* If nothing is to be appended, just return the first object by
* dropping all the others from the stack; this saves both the
* computation and copy of the string rep of the first object,
* enabling the fast '$x[set x {}]' idiom for 'K $x [set x {}]'.
*/
if (appendLen == 0) {
TRACE_WITH_OBJ(("%u => ", opnd), objResultPtr);
NEXT_INST_V(2, (opnd-1), 0);
}
/*
* If the first object is shared, we need a new obj for the result;
* otherwise, we can reuse the first object. In any case, make sure it
* has enough room to accomodate all the concatenated bytes. Note that
* if it is unshared its bytes are already copied by
* Tcl_SetObjectLength, so that we set the loop parameters to avoid
* copying them again: p points to the end of the already copied
* bytes, currPtr to the second object.
*/
objResultPtr = *(tosPtr-(opnd-1));
bytes = Tcl_GetStringFromObj(objResultPtr, &length);
#if !TCL_COMPILE_DEBUG
if (!Tcl_IsShared(objResultPtr)) {
Tcl_SetObjLength(objResultPtr, (length + appendLen));
p = TclGetString(objResultPtr) + length;
currPtr = tosPtr - (opnd - 2);
} else {
#endif
p = (char *) ckalloc((unsigned) (length + appendLen + 1));
TclNewObj(objResultPtr);
objResultPtr->bytes = p;
objResultPtr->length = length + appendLen;
currPtr = tosPtr - (opnd - 1);
#if !TCL_COMPILE_DEBUG
}
#endif
/*
* Append the remaining characters.
*/
for (; currPtr <= tosPtr; currPtr++) {
bytes = Tcl_GetStringFromObj(*currPtr, &length);
if (bytes != NULL) {
memcpy(p, bytes, (size_t) length);
p += length;
}
}
*p = '\0';
TRACE_WITH_OBJ(("%u => ", opnd), objResultPtr);
NEXT_INST_V(2, opnd, 1);
}
case INST_EXPAND_START: {
/*
* Push an element to the expandNestList. This records the current
* tosPtr - i.e., the point in the stack where the expanded command
* starts.
*
* Use a Tcl_Obj as linked list element; slight mem waste, but faster
* allocation than ckalloc. This also abuses the Tcl_Obj structure, as
* we do not define a special tclObjType for it. It is not dangerous
* as the obj is never passed anywhere, so that all manipulations are
* performed here and in INST_INVOKE_EXPANDED (in case of an expansion
* error, also in INST_EXPAND_STKTOP).
*/
Tcl_Obj *objPtr;
TclNewObj(objPtr);
objPtr->internalRep.twoPtrValue.ptr1 = (VOID *)
(tosPtr - eePtr->stackPtr);
objPtr->internalRep.twoPtrValue.ptr2 = (VOID *) expandNestList;
expandNestList = objPtr;
NEXT_INST_F(1, 0, 0);
}
case INST_EXPAND_STKTOP: {
int objc, length, i;
Tcl_Obj **objv, *valuePtr, *objPtr;
/*
* Make sure that the element at stackTop is a list; if not, remove
* the element from the expand link list and leave.
*/
valuePtr = *tosPtr;
if (Tcl_ListObjGetElements(interp, valuePtr, &objc, &objv) != TCL_OK) {
result = TCL_ERROR;
TRACE_WITH_OBJ(("%.30s => ERROR: ", O2S(valuePtr)),
Tcl_GetObjResult(interp));
objPtr = expandNestList;
expandNestList = (Tcl_Obj *) objPtr->internalRep.twoPtrValue.ptr2;
TclDecrRefCount(objPtr);
goto checkForCatch;
}
tosPtr--;
/*
* Make sure there is enough room in the stack to expand this list
* *and* process the rest of the command (at least up to the next
* argument expansion or command end). The operand is the current
* stack depth, as seen by the compiler.
*/
length = objc + codePtr->maxStackDepth - TclGetInt4AtPtr(pc+1);
DECACHE_STACK_INFO();
GrowEvaluationStack(eePtr, length);
CACHE_STACK_INFO();
/*
* Expand the list at stacktop onto the stack; free the list.
*/
for (i = 0; i < objc; i++) {
PUSH_OBJECT(objv[i]);
}
TclDecrRefCount(valuePtr);
NEXT_INST_F(5, 0, 0);
}
{
/*
* INVOCATION BLOCK
*/
int objc, pcAdjustment;
case INST_INVOKE_EXPANDED:
{
Tcl_Obj *objPtr = expandNestList;
expandNestList = (Tcl_Obj *) objPtr->internalRep.twoPtrValue.ptr2;
objc = tosPtr - eePtr->stackPtr
- (ptrdiff_t) objPtr->internalRep.twoPtrValue.ptr1;
TclDecrRefCount(objPtr);
}
if (objc == 0) {
/*
* Nothing was expanded, return {}.
*/
TclNewObj(objResultPtr);
NEXT_INST_F(1, 0, 1);
}
pcAdjustment = 1;
goto doInvocation;
case INST_INVOKE_STK4:
objc = TclGetUInt4AtPtr(pc+1);
pcAdjustment = 5;
goto doInvocation;
case INST_INVOKE_STK1:
objc = TclGetUInt1AtPtr(pc+1);
pcAdjustment = 2;
doInvocation:
{
Tcl_Obj **objv = (tosPtr - (objc-1));
int length;
const char *bytes;
/*
* We keep the stack reference count as a (char *), as that works
* nicely as a portable pointer-sized counter.
*/
char **preservedStackRefCountPtr;
#ifdef TCL_COMPILE_DEBUG
if (tclTraceExec >= 2) {
int i;
if (traceInstructions) {
strncpy(cmdNameBuf, TclGetString(objv[0]), 20);
TRACE(("%u => call ", objc));
} else {
fprintf(stdout, "%d: (%u) invoking ", iPtr->numLevels,
(unsigned int)(pc - codePtr->codeStart));
}
for (i = 0; i < objc; i++) {
TclPrintObject(stdout, objv[i], 15);
fprintf(stdout, " ");
}
fprintf(stdout, "\n");
fflush(stdout);
}
#endif /*TCL_COMPILE_DEBUG*/
/*
* If trace procedures will be called, we need a command string to
* pass to TclEvalObjvInternal; note that a copy of the string
* will be made there to include the ending \0.
*/
bytes = NULL;
length = 0;
if (iPtr->tracePtr != NULL) {
Trace *tracePtr, *nextTracePtr;
for (tracePtr = iPtr->tracePtr; tracePtr != NULL;
tracePtr = nextTracePtr) {
nextTracePtr = tracePtr->nextPtr;
if (tracePtr->level == 0 ||
iPtr->numLevels <= tracePtr->level) {
/*
* Traces will be called: get command string
*/
bytes = GetSrcInfoForPc(pc, codePtr, &length);
break;
}
}
} else {
Command *cmdPtr;
cmdPtr = (Command *) Tcl_GetCommandFromObj(interp, objv[0]);
if ((cmdPtr!=NULL) && (cmdPtr->flags & CMD_HAS_EXEC_TRACES)) {
bytes = GetSrcInfoForPc(pc, codePtr, &length);
}
}
/*
* A reference to part of the stack vector itself escapes our
* control: increase its refCount to stop it from being
* deallocated by a recursive call to ourselves. The extra
* variable is needed because all others are liable to change due
* to the trace procedures.
*/
preservedStackRefCountPtr = (char **) (eePtr->stackPtr-1);
++*preservedStackRefCountPtr;
/*
* Reset the instructionCount variable, since we're about to check
* for async stuff anyway while processing TclEvalObjvInternal.
*/
instructionCount = 1;
/*
* Finally, let TclEvalObjvInternal handle the command.
*
* TIP #280: Record the last piece of info needed by
* 'TclGetSrcInfoForPc', and push the frame.
*/
bcFrame.data.tebc.pc = (char *) pc;
iPtr->cmdFramePtr = &bcFrame;
DECACHE_STACK_INFO();
/*Tcl_ResetResult(interp);*/
result = TclEvalObjvInternal(interp, objc, objv, bytes, length, 0);
CACHE_STACK_INFO();
iPtr->cmdFramePtr = iPtr->cmdFramePtr->nextPtr;
/*
* If the old stack is going to be released, it is safe to do so
* now, since no references to objv are going to be used from now
* on.
*/
--*preservedStackRefCountPtr;
if (*preservedStackRefCountPtr == (char *) 0) {
ckfree((VOID *) preservedStackRefCountPtr);
}
if (result == TCL_OK) {
Tcl_Obj *objPtr;
/*
* Push the call's object result and continue execution with
* the next instruction.
*/
TRACE_WITH_OBJ(("%u => ... after \"%.20s\": TCL_OK, result=",
objc, cmdNameBuf), Tcl_GetObjResult(interp));
objResultPtr = Tcl_GetObjResult(interp);
/*
* Reset the interp's result to avoid possible duplications of
* large objects [Bug 781585]. We do not call Tcl_ResetResult
* to avoid any side effects caused by the resetting of
* errorInfo and errorCode [Bug 804681], which are not needed
* here. We chose instead to manipulate the interp's object
* result directly.
*
* Note that the result object is now in objResultPtr, it
* keeps the refCount it had in its role of
* iPtr->objResultPtr.
*/
TclNewObj(objPtr);
Tcl_IncrRefCount(objPtr);
iPtr->objResultPtr = objPtr;
NEXT_INST_V(pcAdjustment, objc, -1);
} else {
cleanup = objc;
goto processExceptionReturn;
}
}
}
case INST_EVAL_STK: {
/*
* Note to maintainers: it is important that INST_EVAL_STK pop its
* argument from the stack before jumping to checkForCatch! DO NOT
* OPTIMISE!
*/
Tcl_Obj *objPtr = *tosPtr;
DECACHE_STACK_INFO();
/*
* TIP #280: The invoking context is left NULL for a dynamically
* constructed command. We cannot match its lines to the outer
* context.
*/
result = TclCompEvalObj(interp, objPtr, NULL,0);
CACHE_STACK_INFO();
if (result == TCL_OK) {
/*
* Normal return; push the eval's object result.
*/
objResultPtr = Tcl_GetObjResult(interp);
TRACE_WITH_OBJ(("\"%.30s\" => ", O2S(objPtr)),
Tcl_GetObjResult(interp));
/*
* Reset the interp's result to avoid possible duplications of
* large objects [Bug 781585]. We do not call Tcl_ResetResult to
* avoid any side effects caused by the resetting of errorInfo and
* errorCode [Bug 804681], which are not needed here. We chose
* instead to manipulate the interp's object result directly.
*
* Note that the result object is now in objResultPtr, it keeps
* the refCount it had in its role of iPtr->objResultPtr.
*/
TclNewObj(objPtr);
Tcl_IncrRefCount(objPtr);
iPtr->objResultPtr = objPtr;
NEXT_INST_F(1, 1, -1);
} else {
cleanup = 1;
goto processExceptionReturn;
}
}
case INST_EXPR_STK: {
Tcl_Obj *objPtr, *valuePtr;
objPtr = *tosPtr;
DECACHE_STACK_INFO();
/*Tcl_ResetResult(interp);*/
result = Tcl_ExprObj(interp, objPtr, &valuePtr);
CACHE_STACK_INFO();
if (result != TCL_OK) {
TRACE_WITH_OBJ(("\"%.30s\" => ERROR: ", O2S(objPtr)),
Tcl_GetObjResult(interp));
goto checkForCatch;
}
objResultPtr = valuePtr;
TRACE_WITH_OBJ(("\"%.30s\" => ", O2S(objPtr)), valuePtr);
NEXT_INST_F(1, 1, -1); /* already has right refct */
}
/*
* ---------------------------------------------------------
* Start of INST_LOAD instructions.
*
* WARNING: more 'goto' here than your doctor recommended! The different
* instructions set the value of some variables and then jump to somme
* common execution code.
*/
{
int opnd, pcAdjustment;
char *part1, *part2;
Var *varPtr, *arrayPtr;
Tcl_Obj *objPtr;
case INST_LOAD_SCALAR1:
opnd = TclGetUInt1AtPtr(pc+1);
varPtr = &(compiledLocals[opnd]);
part1 = varPtr->name;
while (TclIsVarLink(varPtr)) {
varPtr = varPtr->value.linkPtr;
}
TRACE(("%u => ", opnd));
if (TclIsVarDirectReadable(varPtr)) {
/*
* No errors, no traces: just get the value.
*/
objResultPtr = varPtr->value.objPtr;
TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
NEXT_INST_F(2, 0, 1);
}
pcAdjustment = 2;
cleanup = 0;
arrayPtr = NULL;
part2 = NULL;
goto doCallPtrGetVar;
case INST_LOAD_SCALAR4:
opnd = TclGetUInt4AtPtr(pc+1);
varPtr = &(compiledLocals[opnd]);
part1 = varPtr->name;
while (TclIsVarLink(varPtr)) {
varPtr = varPtr->value.linkPtr;
}
TRACE(("%u => ", opnd));
if (TclIsVarDirectReadable(varPtr)) {
/*
* No errors, no traces: just get the value.
*/
objResultPtr = varPtr->value.objPtr;
TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
NEXT_INST_F(5, 0, 1);
}
pcAdjustment = 5;
cleanup = 0;
arrayPtr = NULL;
part2 = NULL;
goto doCallPtrGetVar;
case INST_LOAD_ARRAY_STK:
cleanup = 2;
part2 = Tcl_GetString(*tosPtr); /* element name */
objPtr = *(tosPtr - 1); /* array name */
TRACE(("\"%.30s(%.30s)\" => ", O2S(objPtr), part2));
goto doLoadStk;
case INST_LOAD_STK:
case INST_LOAD_SCALAR_STK:
cleanup = 1;
part2 = NULL;
objPtr = *tosPtr; /* variable name */
TRACE(("\"%.30s\" => ", O2S(objPtr)));
doLoadStk:
part1 = TclGetString(objPtr);
varPtr = TclObjLookupVar(interp, objPtr, part2, TCL_LEAVE_ERR_MSG,
"read", /*createPart1*/ 0, /*createPart2*/ 1, &arrayPtr);
if (varPtr == NULL) {
TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
result = TCL_ERROR;
goto checkForCatch;
}
if (TclIsVarDirectReadable(varPtr)
&& ((arrayPtr == NULL) || TclIsVarUntraced(arrayPtr))) {
/*
* No errors, no traces: just get the value.
*/
objResultPtr = varPtr->value.objPtr;
TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
NEXT_INST_V(1, cleanup, 1);
}
pcAdjustment = 1;
goto doCallPtrGetVar;
case INST_LOAD_ARRAY4:
opnd = TclGetUInt4AtPtr(pc+1);
pcAdjustment = 5;
goto doLoadArray;
case INST_LOAD_ARRAY1:
opnd = TclGetUInt1AtPtr(pc+1);
pcAdjustment = 2;
doLoadArray:
part2 = TclGetString(*tosPtr);
arrayPtr = &(compiledLocals[opnd]);
part1 = arrayPtr->name;
while (TclIsVarLink(arrayPtr)) {
arrayPtr = arrayPtr->value.linkPtr;
}
TRACE(("%u \"%.30s\" => ", opnd, part2));
if (!TclIsVarUndefined(arrayPtr)
&& TclIsVarArray(arrayPtr)
&& TclIsVarUntraced(arrayPtr)) {
Tcl_HashEntry *hPtr = Tcl_FindHashEntry(arrayPtr->value.tablePtr, part2);
if (hPtr == NULL) {
varPtr = NULL;
} else {
varPtr = (Var *) Tcl_GetHashValue(hPtr);
}
} else {
varPtr = NULL;
}
if (varPtr == NULL) {
varPtr = TclLookupArrayElement(interp, part1, part2,
TCL_LEAVE_ERR_MSG, "read", 0, 1, arrayPtr);
if (varPtr == NULL) {
TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
result = TCL_ERROR;
goto checkForCatch;
}
}
if (TclIsVarDirectReadable(varPtr)
&& ((arrayPtr == NULL) || TclIsVarUntraced(arrayPtr))) {
/*
* No errors, no traces: just get the value.
*/
objResultPtr = varPtr->value.objPtr;
TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
NEXT_INST_F(pcAdjustment, 1, 1);
}
cleanup = 1;
goto doCallPtrGetVar;
doCallPtrGetVar:
/*
* There are either errors or the variable is traced: call
* TclPtrGetVar to process fully.
*/
DECACHE_STACK_INFO();
objResultPtr = TclPtrGetVar(interp, varPtr, arrayPtr, part1, part2,
TCL_LEAVE_ERR_MSG);
CACHE_STACK_INFO();
if (objResultPtr == NULL) {
TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
result = TCL_ERROR;
goto checkForCatch;
}
TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
NEXT_INST_V(pcAdjustment, cleanup, 1);
}
/*
* End of INST_LOAD instructions.
* ---------------------------------------------------------
*/
/*
* ---------------------------------------------------------
* Start of INST_STORE and related instructions.
*
* WARNING: more 'goto' here than your doctor recommended! The different
* instructions set the value of some variables and then jump to somme
* common execution code.
*/
{
int opnd, pcAdjustment, storeFlags;
char *part1, *part2;
Var *varPtr, *arrayPtr;
Tcl_Obj *objPtr, *valuePtr;
case INST_LAPPEND_STK:
valuePtr = *tosPtr; /* value to append */
part2 = NULL;
storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE
| TCL_LIST_ELEMENT | TCL_TRACE_READS);
goto doStoreStk;
case INST_LAPPEND_ARRAY_STK:
valuePtr = *tosPtr; /* value to append */
part2 = TclGetString(*(tosPtr - 1));
storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE
| TCL_LIST_ELEMENT | TCL_TRACE_READS);
goto doStoreStk;
case INST_APPEND_STK:
valuePtr = *tosPtr; /* value to append */
part2 = NULL;
storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE);
goto doStoreStk;
case INST_APPEND_ARRAY_STK:
valuePtr = *tosPtr; /* value to append */
part2 = TclGetString(*(tosPtr - 1));
storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE);
goto doStoreStk;
case INST_STORE_ARRAY_STK:
valuePtr = *tosPtr;
part2 = TclGetString(*(tosPtr - 1));
storeFlags = TCL_LEAVE_ERR_MSG;
goto doStoreStk;
case INST_STORE_STK:
case INST_STORE_SCALAR_STK:
valuePtr = *tosPtr;
part2 = NULL;
storeFlags = TCL_LEAVE_ERR_MSG;
doStoreStk:
objPtr = *(tosPtr - 1 - (part2 != NULL)); /* variable name */
part1 = TclGetString(objPtr);
#ifdef TCL_COMPILE_DEBUG
if (part2 == NULL) {
TRACE(("\"%.30s\" <- \"%.30s\" =>", part1, O2S(valuePtr)));
} else {
TRACE(("\"%.30s(%.30s)\" <- \"%.30s\" => ",
part1, part2, O2S(valuePtr)));
}
#endif
varPtr = TclObjLookupVar(interp, objPtr, part2, TCL_LEAVE_ERR_MSG,
"set", /*createPart1*/ 1, /*createPart2*/ 1, &arrayPtr);
if (varPtr == NULL) {
TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
result = TCL_ERROR;
goto checkForCatch;
}
cleanup = ((part2 == NULL)? 2 : 3);
pcAdjustment = 1;
goto doCallPtrSetVar;
case INST_LAPPEND_ARRAY4:
opnd = TclGetUInt4AtPtr(pc+1);
pcAdjustment = 5;
storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE
| TCL_LIST_ELEMENT | TCL_TRACE_READS);
goto doStoreArray;
case INST_LAPPEND_ARRAY1:
opnd = TclGetUInt1AtPtr(pc+1);
pcAdjustment = 2;
storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE
| TCL_LIST_ELEMENT | TCL_TRACE_READS);
goto doStoreArray;
case INST_APPEND_ARRAY4:
opnd = TclGetUInt4AtPtr(pc+1);
pcAdjustment = 5;
storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE);
goto doStoreArray;
case INST_APPEND_ARRAY1:
opnd = TclGetUInt1AtPtr(pc+1);
pcAdjustment = 2;
storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE);
goto doStoreArray;
case INST_STORE_ARRAY4:
opnd = TclGetUInt4AtPtr(pc+1);
pcAdjustment = 5;
storeFlags = TCL_LEAVE_ERR_MSG;
goto doStoreArray;
case INST_STORE_ARRAY1:
opnd = TclGetUInt1AtPtr(pc+1);
pcAdjustment = 2;
storeFlags = TCL_LEAVE_ERR_MSG;
doStoreArray:
valuePtr = *tosPtr;
part2 = TclGetString(*(tosPtr - 1));
arrayPtr = &(compiledLocals[opnd]);
part1 = arrayPtr->name;
TRACE(("%u \"%.30s\" <- \"%.30s\" => ", opnd, part2, O2S(valuePtr)));
while (TclIsVarLink(arrayPtr)) {
arrayPtr = arrayPtr->value.linkPtr;
}
if (!TclIsVarUndefined(arrayPtr)
&& TclIsVarArray(arrayPtr)
&& TclIsVarUntraced(arrayPtr)) {
Tcl_HashEntry *hPtr = Tcl_FindHashEntry(arrayPtr->value.tablePtr, part2);
if (hPtr == NULL) {
varPtr = NULL;
} else {
varPtr = (Var *) Tcl_GetHashValue(hPtr);
}
} else {
varPtr = NULL;
}
if (varPtr == NULL) {
varPtr = TclLookupArrayElement(interp, part1, part2,
TCL_LEAVE_ERR_MSG, "set", 1, 1, arrayPtr);
if (varPtr == NULL) {
TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
result = TCL_ERROR;
goto checkForCatch;
}
}
cleanup = 2;
goto doCallPtrSetVar;
case INST_LAPPEND_SCALAR4:
opnd = TclGetUInt4AtPtr(pc+1);
pcAdjustment = 5;
storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE
| TCL_LIST_ELEMENT | TCL_TRACE_READS);
goto doStoreScalar;
case INST_LAPPEND_SCALAR1:
opnd = TclGetUInt1AtPtr(pc+1);
pcAdjustment = 2;
storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE
| TCL_LIST_ELEMENT | TCL_TRACE_READS);
goto doStoreScalar;
case INST_APPEND_SCALAR4:
opnd = TclGetUInt4AtPtr(pc+1);
pcAdjustment = 5;
storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE);
goto doStoreScalar;
case INST_APPEND_SCALAR1:
opnd = TclGetUInt1AtPtr(pc+1);
pcAdjustment = 2;
storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE);
goto doStoreScalar;
case INST_STORE_SCALAR4:
opnd = TclGetUInt4AtPtr(pc+1);
pcAdjustment = 5;
storeFlags = TCL_LEAVE_ERR_MSG;
goto doStoreScalar;
case INST_STORE_SCALAR1:
opnd = TclGetUInt1AtPtr(pc+1);
pcAdjustment = 2;
storeFlags = TCL_LEAVE_ERR_MSG;
doStoreScalar:
valuePtr = *tosPtr;
varPtr = &(compiledLocals[opnd]);
part1 = varPtr->name;
TRACE(("%u <- \"%.30s\" => ", opnd, O2S(valuePtr)));
while (TclIsVarLink(varPtr)) {
varPtr = varPtr->value.linkPtr;
}
cleanup = 1;
arrayPtr = NULL;
part2 = NULL;
doCallPtrSetVar:
if ((storeFlags == TCL_LEAVE_ERR_MSG)
&& TclIsVarDirectWritable(varPtr)
&& ((arrayPtr == NULL) || TclIsVarUntraced(arrayPtr))) {
/*
* No traces, no errors, plain 'set': we can safely inline. The
* value *will* be set to what's requested, so that the stack top
* remains pointing to the same Tcl_Obj.
*/
valuePtr = varPtr->value.objPtr;
objResultPtr = *tosPtr;
if (valuePtr != objResultPtr) {
if (valuePtr != NULL) {
TclDecrRefCount(valuePtr);
} else {
TclSetVarScalar(varPtr);
TclClearVarUndefined(varPtr);
}
varPtr->value.objPtr = objResultPtr;
Tcl_IncrRefCount(objResultPtr);
}
#ifndef TCL_COMPILE_DEBUG
if (*(pc+pcAdjustment) == INST_POP) {
NEXT_INST_V((pcAdjustment+1), cleanup, 0);
}
#else
TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
#endif
NEXT_INST_V(pcAdjustment, cleanup, 1);
} else {
DECACHE_STACK_INFO();
objResultPtr = TclPtrSetVar(interp, varPtr, arrayPtr,
part1, part2, valuePtr, storeFlags);
CACHE_STACK_INFO();
if (objResultPtr == NULL) {
TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
result = TCL_ERROR;
goto checkForCatch;
}
}
#ifndef TCL_COMPILE_DEBUG
if (*(pc+pcAdjustment) == INST_POP) {
NEXT_INST_V((pcAdjustment+1), cleanup, 0);
}
#endif
TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
NEXT_INST_V(pcAdjustment, cleanup, 1);
}
/*
* End of INST_STORE and related instructions.
* ---------------------------------------------------------
*/
/*
* ---------------------------------------------------------
* Start of INST_INCR instructions.
*
* WARNING: more 'goto' here than your doctor recommended! The different
* instructions set the value of some variables and then jump to somme
* common execution code.
*/
/*TODO: Consider more untangling here; merge with LOAD and STORE ? */
{
Tcl_Obj *objPtr, *incrPtr;
int opnd, pcAdjustment;
#ifndef NO_WIDE_TYPE
Tcl_WideInt w;
#endif
long i;
char *part1, *part2;
Var *varPtr, *arrayPtr;
case INST_INCR_SCALAR1:
case INST_INCR_ARRAY1:
case INST_INCR_ARRAY_STK:
case INST_INCR_SCALAR_STK:
case INST_INCR_STK:
opnd = TclGetUInt1AtPtr(pc+1);
incrPtr = *tosPtr;
tosPtr--;
switch (*pc) {
case INST_INCR_SCALAR1:
pcAdjustment = 2;
goto doIncrScalar;
case INST_INCR_ARRAY1:
pcAdjustment = 2;
goto doIncrArray;
default:
pcAdjustment = 1;
goto doIncrStk;
}
case INST_INCR_ARRAY_STK_IMM:
case INST_INCR_SCALAR_STK_IMM:
case INST_INCR_STK_IMM:
i = TclGetInt1AtPtr(pc+1);
incrPtr = Tcl_NewIntObj(i);
Tcl_IncrRefCount(incrPtr);
pcAdjustment = 2;
doIncrStk:
if ((*pc == INST_INCR_ARRAY_STK_IMM)
|| (*pc == INST_INCR_ARRAY_STK)) {
part2 = TclGetString(*tosPtr);
objPtr = *(tosPtr - 1);
TRACE(("\"%.30s(%.30s)\" (by %ld) => ",
O2S(objPtr), part2, i));
} else {
part2 = NULL;
objPtr = *tosPtr;
TRACE(("\"%.30s\" (by %ld) => ", O2S(objPtr), i));
}
part1 = TclGetString(objPtr);
varPtr = TclObjLookupVar(interp, objPtr, part2, TCL_LEAVE_ERR_MSG,
"read", 1, 1, &arrayPtr);
if (varPtr == NULL) {
Tcl_AddObjErrorInfo(interp,
"\n (reading value of variable to increment)", -1);
TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
result = TCL_ERROR;
Tcl_DecrRefCount(incrPtr);
goto checkForCatch;
}
cleanup = ((part2 == NULL)? 1 : 2);
goto doIncrVar;
case INST_INCR_ARRAY1_IMM:
opnd = TclGetUInt1AtPtr(pc+1);
i = TclGetInt1AtPtr(pc+2);
incrPtr = Tcl_NewIntObj(i);
Tcl_IncrRefCount(incrPtr);
pcAdjustment = 3;
doIncrArray:
part2 = TclGetString(*tosPtr);
arrayPtr = &(compiledLocals[opnd]);
part1 = arrayPtr->name;
while (TclIsVarLink(arrayPtr)) {
arrayPtr = arrayPtr->value.linkPtr;
}
TRACE(("%u \"%.30s\" (by %ld) => ", opnd, part2, i));
varPtr = TclLookupArrayElement(interp, part1, part2,
TCL_LEAVE_ERR_MSG, "read", 1, 1, arrayPtr);
if (varPtr == NULL) {
TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
result = TCL_ERROR;
Tcl_DecrRefCount(incrPtr);
goto checkForCatch;
}
cleanup = 1;
goto doIncrVar;
case INST_INCR_SCALAR1_IMM:
opnd = TclGetUInt1AtPtr(pc+1);
i = TclGetInt1AtPtr(pc+2);
pcAdjustment = 3;
cleanup = 0;
varPtr = &(compiledLocals[opnd]);
while (TclIsVarLink(varPtr)) {
varPtr = varPtr->value.linkPtr;
}
if (TclIsVarDirectReadable(varPtr)) {
ClientData ptr;
int type;
objPtr = varPtr->value.objPtr;
if (GetNumberFromObj(NULL, objPtr, &ptr, &type) == TCL_OK) {
if (type == TCL_NUMBER_LONG) {
long augend = *((const long *)ptr);
long sum = augend + i;
/*
* Test for overflow.
* TODO: faster checking with known limits on i?
*/
if ((augend >= 0 || i >= 0 || sum < 0)
&& (sum >= 0 || i < 0 || augend < 0)) {
TRACE(("%u %ld => ", opnd, i));
if (Tcl_IsShared(objPtr)) {
objPtr->refCount--; /* we know it's shared */
TclNewLongObj(objResultPtr, sum);
Tcl_IncrRefCount(objResultPtr);
varPtr->value.objPtr = objResultPtr;
} else {
objResultPtr = objPtr;
TclSetLongObj(objPtr, sum);
}
goto doneIncr;
}
#ifndef NO_WIDE_TYPE
{
w = (Tcl_WideInt)augend;
TRACE(("%u %ld => ", opnd, i));
if (Tcl_IsShared(objPtr)) {
objPtr->refCount--; /* we know it's shared */
objResultPtr = Tcl_NewWideIntObj(w+i);
Tcl_IncrRefCount(objResultPtr);
varPtr->value.objPtr = objResultPtr;
} else {
objResultPtr = objPtr;
/*
* We know the sum value is outside the long
* range; use macro form that doesn't range test
* again.
*/
TclSetWideIntObj(objPtr, w+i);
}
goto doneIncr;
}
#endif
} /* end if (type == TCL_NUMBER_LONG) */
#ifndef NO_WIDE_TYPE
if (type == TCL_NUMBER_WIDE) {
Tcl_WideInt sum;
w = *((const Tcl_WideInt *)ptr);
sum = w + i;
/*
* Check for overflow.
*/
if ((w >= 0 || i >= 0 || sum < 0)
&& (w < 0 || i < 0 || sum >= 0)) {
TRACE(("%u %ld => ", opnd, i));
if (Tcl_IsShared(objPtr)) {
objPtr->refCount--; /* we know it's shared */
objResultPtr = Tcl_NewWideIntObj(sum);
Tcl_IncrRefCount(objResultPtr);
varPtr->value.objPtr = objResultPtr;
} else {
objResultPtr = objPtr;
/*
* We *do not* know the sum value is outside the
* long range (wide + long can yield long); use
* the function call that checks range.
*/
Tcl_SetWideIntObj(objPtr, sum);
}
goto doneIncr;
}
}
#endif
}
if (Tcl_IsShared(objPtr)) {
objPtr->refCount--; /* We know it's shared */
objResultPtr = Tcl_DuplicateObj(objPtr);
Tcl_IncrRefCount(objResultPtr);
varPtr->value.objPtr = objResultPtr;
} else {
objResultPtr = objPtr;
}
TclNewLongObj(incrPtr, i);
result = TclIncrObj(interp, objResultPtr, incrPtr);
Tcl_DecrRefCount(incrPtr);
if (result != TCL_OK) {
TRACE_APPEND(("ERROR: %.30s\n",
O2S(Tcl_GetObjResult(interp))));
goto checkForCatch;
}
goto doneIncr;
}
/*
* All other cases, flow through to generic handling.
*/
TclNewLongObj(incrPtr, i);
Tcl_IncrRefCount(incrPtr);
doIncrScalar:
varPtr = &(compiledLocals[opnd]);
part1 = varPtr->name;
while (TclIsVarLink(varPtr)) {
varPtr = varPtr->value.linkPtr;
}
arrayPtr = NULL;
part2 = NULL;
cleanup = 0;
TRACE(("%u %ld => ", opnd, i));
doIncrVar:
if (TclIsVarDirectReadable(varPtr)
&& ((arrayPtr == NULL) || TclIsVarUntraced(arrayPtr))) {
objPtr = varPtr->value.objPtr;
if (Tcl_IsShared(objPtr)) {
objPtr->refCount--; /* We know it's shared */
objResultPtr = Tcl_DuplicateObj(objPtr);
Tcl_IncrRefCount(objResultPtr);
varPtr->value.objPtr = objResultPtr;
} else {
objResultPtr = objPtr;
}
result = TclIncrObj(interp, objResultPtr, incrPtr);
Tcl_DecrRefCount(incrPtr);
if (result != TCL_OK) {
TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
goto checkForCatch;
}
} else {
DECACHE_STACK_INFO();
objResultPtr = TclPtrIncrObjVar(interp, varPtr, arrayPtr,
part1, part2, incrPtr, TCL_LEAVE_ERR_MSG);
CACHE_STACK_INFO();
Tcl_DecrRefCount(incrPtr);
if (objResultPtr == NULL) {
TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
result = TCL_ERROR;
goto checkForCatch;
}
}
doneIncr:
TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
#ifndef TCL_COMPILE_DEBUG
if (*(pc+pcAdjustment) == INST_POP) {
NEXT_INST_V((pcAdjustment+1), cleanup, 0);
}
#endif
NEXT_INST_V(pcAdjustment, cleanup, 1);
}
/*
* End of INST_INCR instructions.
* ---------------------------------------------------------
*/
case INST_UPVAR: {
int opnd;
Var *varPtr, *otherPtr;
TRACE_WITH_OBJ(("upvar "), *(tosPtr-1));
{
CallFrame *framePtr, *savedFramePtr;
result = TclObjGetFrame(interp, *(tosPtr-1), &framePtr);
if (result == -1) {
result = TCL_ERROR;
goto checkForCatch;
} else {
result = TCL_OK;
}
/*
* Locate the other variable
*/
savedFramePtr = iPtr->varFramePtr;
iPtr->varFramePtr = framePtr;
otherPtr = TclObjLookupVar(interp, *tosPtr, NULL,
(TCL_LEAVE_ERR_MSG), "access",
/*createPart1*/ 1, /*createPart2*/ 1, &varPtr);
iPtr->varFramePtr = savedFramePtr;
if (otherPtr == NULL) {
result = TCL_ERROR;
goto checkForCatch;
}
}
goto doLinkVars;
case INST_VARIABLE:
case INST_NSUPVAR:
TRACE_WITH_OBJ(("nsupvar "), *(tosPtr-1));
{
Tcl_Namespace *nsPtr, *savedNsPtr;
result = TclGetNamespaceFromObj(interp, *(tosPtr-1), &nsPtr);
if (result != TCL_OK) {
goto checkForCatch;
}
if (nsPtr == NULL) {
/*
* The namespace does not exist, leave an error message.
*/
Tcl_SetObjResult(interp, Tcl_Format(NULL,
"namespace \"%s\" does not exist", 1,
(tosPtr-1)));
result = TCL_ERROR;
goto checkForCatch;
}
/*
* Locate the other variable
*/
savedNsPtr = (Tcl_Namespace *) iPtr->varFramePtr->nsPtr;
iPtr->varFramePtr->nsPtr = (Namespace *) nsPtr;
otherPtr = TclObjLookupVar(interp, *tosPtr, NULL,
(TCL_NAMESPACE_ONLY | TCL_LEAVE_ERR_MSG), "access",
/*createPart1*/ 1, /*createPart2*/ 1, &varPtr);
iPtr->varFramePtr->nsPtr = (Namespace *) savedNsPtr;
if (otherPtr == NULL) {
result = TCL_ERROR;
goto checkForCatch;
}
/*
* Do the [variable] magic if necessary
*/
if ((*pc == INST_VARIABLE) && !TclIsVarNamespaceVar(otherPtr)) {
TclSetVarNamespaceVar(otherPtr);
otherPtr->refCount++;
}
}
doLinkVars:
/*
* If we are here, the local variable has already been created: do the
* little work of TclPtrMakeUpvar that remains to be done right here
* if there are no errors; otherwise, let it handle the case.
*/
opnd = TclGetInt4AtPtr(pc+1);;
varPtr = &(compiledLocals[opnd]);
if ((varPtr != otherPtr) && (varPtr->tracePtr == NULL)
&& (TclIsVarUndefined(varPtr) || TclIsVarLink(varPtr))) {
if (!TclIsVarUndefined(varPtr)) {
/* Then it is a defined link */
Var *linkPtr = varPtr->value.linkPtr;
if (linkPtr == otherPtr) {
goto doLinkVarsDone;
}
linkPtr->refCount--;
if (TclIsVarUndefined(linkPtr)) {
TclCleanupVar(linkPtr, NULL);
}
}
TclSetVarLink(varPtr);
TclClearVarUndefined(varPtr);
varPtr->value.linkPtr = otherPtr;
otherPtr->refCount++;
} else {
result = TclPtrMakeUpvar(interp, otherPtr, NULL, 0, opnd);
if (result != TCL_OK) {
goto checkForCatch;
}
}
/*
* Do not pop the namespace or frame index, it may be needed for other
* variables.
*/
doLinkVarsDone:
NEXT_INST_F(5, 1, 0);
}
case INST_JUMP1: {
int opnd;
opnd = TclGetInt1AtPtr(pc+1);
TRACE(("%d => new pc %u\n", opnd,
(unsigned int)(pc + opnd - codePtr->codeStart)));
NEXT_INST_F(opnd, 0, 0);
}
case INST_JUMP4: {
int opnd;
opnd = TclGetInt4AtPtr(pc+1);
TRACE(("%d => new pc %u\n", opnd,
(unsigned int)(pc + opnd - codePtr->codeStart)));
NEXT_INST_F(opnd, 0, 0);
}
{
int jmpOffset[2], b;
Tcl_Obj *valuePtr;
/* TODO: consider rewrite so we don't compute the offset we're not
* going to take. */
case INST_JUMP_FALSE4:
jmpOffset[0] = TclGetInt4AtPtr(pc+1); /* FALSE offset */
jmpOffset[1] = 5; /* TRUE offset*/
goto doCondJump;
case INST_JUMP_TRUE4:
jmpOffset[0] = 5;
jmpOffset[1] = TclGetInt4AtPtr(pc+1);
goto doCondJump;
case INST_JUMP_FALSE1:
jmpOffset[0] = TclGetInt1AtPtr(pc+1);
jmpOffset[1] = 2;
goto doCondJump;
case INST_JUMP_TRUE1:
jmpOffset[0] = 2;
jmpOffset[1] = TclGetInt1AtPtr(pc+1);
doCondJump:
valuePtr = *tosPtr;
/* TODO - check claim that taking address of b harms performance */
/* TODO - consider optimization search for eePtr->constants */
result = TclGetBooleanFromObj(interp, valuePtr, &b);
if (result != TCL_OK) {
TRACE_WITH_OBJ(("%d => ERROR: ", jmpOffset[
((*pc == INST_JUMP_FALSE1) || (*pc == INST_JUMP_FALSE4))
? 0 : 1]), Tcl_GetObjResult(interp));
goto checkForCatch;
}
#ifdef TCL_COMPILE_DEBUG
if (b) {
if ((*pc == INST_JUMP_TRUE1) || (*pc == INST_JUMP_TRUE4)) {
TRACE(("%d => %.20s true, new pc %u\n", jmpOffset[1], O2S(valuePtr),
(unsigned int)(pc+jmpOffset[1] - codePtr->codeStart)));
} else {
TRACE(("%d => %.20s true\n", jmpOffset[0], O2S(valuePtr)));
}
} else {
if ((*pc == INST_JUMP_TRUE1) || (*pc == INST_JUMP_TRUE4)) {
TRACE(("%d => %.20s false\n", jmpOffset[0], O2S(valuePtr)));
} else {
TRACE(("%d => %.20s false, new pc %u\n", jmpOffset[0], O2S(valuePtr),
(unsigned int)(pc + jmpOffset[1] - codePtr->codeStart)));
}
}
#endif
NEXT_INST_F(jmpOffset[b], 1, 0);
}
case INST_JUMP_TABLE: {
Tcl_HashEntry *hPtr;
JumptableInfo *jtPtr;
int opnd;
/*
* Jump to location looked up in a hashtable; fall through to next
* instr if lookup fails.
*/
opnd = TclGetInt4AtPtr(pc+1);
jtPtr = (JumptableInfo *) codePtr->auxDataArrayPtr[opnd].clientData;
TRACE(("%d => %.20s ", opnd, O2S(*tosPtr)));
hPtr = Tcl_FindHashEntry(&jtPtr->hashTable, Tcl_GetString(*tosPtr));
if (hPtr != NULL) {
int jumpOffset = PTR2INT(Tcl_GetHashValue(hPtr));
TRACE_APPEND(("found in table, new pc %u\n",
(unsigned int)(pc - codePtr->codeStart + jumpOffset)));
NEXT_INST_F(jumpOffset, 1, 0);
} else {
TRACE_APPEND(("not found in table\n"));
NEXT_INST_F(5, 1, 0);
}
}
/*
* These two instructions are now redundant: the complete logic of the LOR
* and LAND is now handled by the expression compiler.
*/
case INST_LOR:
case INST_LAND: {
/*
* Operands must be boolean or numeric. No int->double conversions are
* performed.
*/
int i1, i2, iResult;
Tcl_Obj *value2Ptr = *tosPtr;
Tcl_Obj *valuePtr = *(tosPtr - 1);
result = TclGetBooleanFromObj(NULL, valuePtr, &i1);
if (result != TCL_OK) {
TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(valuePtr),
(valuePtr->typePtr? valuePtr->typePtr->name : "null")));
IllegalExprOperandType(interp, pc, valuePtr);
goto checkForCatch;
}
result = TclGetBooleanFromObj(NULL, value2Ptr, &i2);
if (result != TCL_OK) {
TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(value2Ptr),
(value2Ptr->typePtr? value2Ptr->typePtr->name : "null")));
IllegalExprOperandType(interp, pc, value2Ptr);
goto checkForCatch;
}
if (*pc == INST_LOR) {
iResult = (i1 || i2);
} else {
iResult = (i1 && i2);
}
objResultPtr = eePtr->constants[iResult];
TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), iResult));
NEXT_INST_F(1, 2, 1);
}
/*
* ---------------------------------------------------------
* Start of INST_LIST and related instructions.
*/
case INST_LIST: {
/*
* Pop the opnd (objc) top stack elements into a new list obj and then
* decrement their ref counts.
*/
int opnd;
opnd = TclGetUInt4AtPtr(pc+1);
objResultPtr = Tcl_NewListObj(opnd, (tosPtr - (opnd-1)));
TRACE_WITH_OBJ(("%u => ", opnd), objResultPtr);
NEXT_INST_V(5, opnd, 1);
}
case INST_LIST_LENGTH: {
Tcl_Obj *valuePtr;
int length;
valuePtr = *tosPtr;
result = Tcl_ListObjLength(interp, valuePtr, &length);
if (result != TCL_OK) {
TRACE_WITH_OBJ(("%.30s => ERROR: ", O2S(valuePtr)),
Tcl_GetObjResult(interp));
goto checkForCatch;
}
TclNewIntObj(objResultPtr, length);
TRACE(("%.20s => %d\n", O2S(valuePtr), length));
NEXT_INST_F(1, 1, 1);
}
case INST_LIST_INDEX: {
/*** lindex with objc == 3 ***/
Tcl_Obj *valuePtr, *value2Ptr;
/*
* Pop the two operands
*/
value2Ptr = *tosPtr;
valuePtr = *(tosPtr - 1);
/*
* Extract the desired list element
*/
objResultPtr = TclLindexList(interp, valuePtr, value2Ptr);
if (objResultPtr == NULL) {
TRACE_WITH_OBJ(("%.30s %.30s => ERROR: ", O2S(valuePtr),
O2S(value2Ptr)), Tcl_GetObjResult(interp));
result = TCL_ERROR;
goto checkForCatch;
}
/*
* Stash the list element on the stack
*/
TRACE(("%.20s %.20s => %s\n",
O2S(valuePtr), O2S(value2Ptr), O2S(objResultPtr)));
NEXT_INST_F(1, 2, -1); /* already has the correct refCount */
}
case INST_LIST_INDEX_IMM: {
/*** lindex with objc==3 and index in bytecode stream ***/
int listc, idx, opnd;
Tcl_Obj **listv;
Tcl_Obj *valuePtr;
/*
* Pop the list and get the index
*/
valuePtr = *tosPtr;
opnd = TclGetInt4AtPtr(pc+1);
/*
* Get the contents of the list, making sure that it really is a list
* in the process.
*/
result = Tcl_ListObjGetElements(interp, valuePtr, &listc, &listv);
if (result != TCL_OK) {
TRACE_WITH_OBJ(("\"%.30s\" %d => ERROR: ", O2S(valuePtr), opnd),
Tcl_GetObjResult(interp));
goto checkForCatch;
}
/*
* Select the list item based on the index. Negative operand means
* end-based indexing.
*/
if (opnd < -1) {
idx = opnd+1 + listc;
} else {
idx = opnd;
}
if (idx >= 0 && idx < listc) {
objResultPtr = listv[idx];
} else {
TclNewObj(objResultPtr);
}
TRACE_WITH_OBJ(("\"%.30s\" %d => ", O2S(valuePtr), opnd),
objResultPtr);
NEXT_INST_F(5, 1, 1);
}
case INST_LIST_INDEX_MULTI: {
/*
* 'lindex' with multiple index args:
*
* Determine the count of index args.
*/
int numIdx, opnd;
opnd = TclGetUInt4AtPtr(pc+1);
numIdx = opnd-1;
/*
* Do the 'lindex' operation.
*/
objResultPtr = TclLindexFlat(interp, *(tosPtr - numIdx),
numIdx, tosPtr - numIdx + 1);
/*
* Check for errors
*/
if (objResultPtr == NULL) {
TRACE_WITH_OBJ(("%d => ERROR: ", opnd), Tcl_GetObjResult(interp));
result = TCL_ERROR;
goto checkForCatch;
}
/*
* Set result
*/
TRACE(("%d => %s\n", opnd, O2S(objResultPtr)));
NEXT_INST_V(5, opnd, -1);
}
case INST_LSET_FLAT: {
/*
* Lset with 3, 5, or more args. Get the number of index args.
*/
int numIdx,opnd;
Tcl_Obj *valuePtr, *value2Ptr;
opnd = TclGetUInt4AtPtr(pc + 1);
numIdx = opnd - 2;
/*
* Get the old value of variable, and remove the stack ref. This is
* safe because the variable still references the object; the ref
* count will never go zero here.
*/
value2Ptr = POP_OBJECT();
TclDecrRefCount(value2Ptr); /* This one should be done here */
/*
* Get the new element value.
*/
valuePtr = *tosPtr;
/*
* Compute the new variable value
*/
objResultPtr = TclLsetFlat(interp, value2Ptr, numIdx,
tosPtr - numIdx, valuePtr);
/*
* Check for errors
*/
if (objResultPtr == NULL) {
TRACE_WITH_OBJ(("%d => ERROR: ", opnd), Tcl_GetObjResult(interp));
result = TCL_ERROR;
goto checkForCatch;
}
/*
* Set result
*/
TRACE(("%d => %s\n", opnd, O2S(objResultPtr)));
NEXT_INST_V(5, (numIdx+1), -1);
}
case INST_LSET_LIST: {
/*
* 'lset' with 4 args.
*/
Tcl_Obj *objPtr, *valuePtr, *value2Ptr;
/*
* Get the old value of variable, and remove the stack ref. This is
* safe because the variable still references the object; the ref
* count will never go zero here.
*/
objPtr = POP_OBJECT();
TclDecrRefCount(objPtr); /* This one should be done here */
/*
* Get the new element value, and the index list
*/
valuePtr = *tosPtr;
value2Ptr = *(tosPtr - 1);
/*
* Compute the new variable value
*/
objResultPtr = TclLsetList(interp, objPtr, value2Ptr, valuePtr);
/*
* Check for errors
*/
if (objResultPtr == NULL) {
TRACE_WITH_OBJ(("\"%.30s\" => ERROR: ", O2S(value2Ptr)),
Tcl_GetObjResult(interp));
result = TCL_ERROR;
goto checkForCatch;
}
/*
* Set result
*/
TRACE(("=> %s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, -1);
}
case INST_LIST_RANGE_IMM: {
/*** lrange with objc==4 and both indices in bytecode stream ***/
int listc, fromIdx, toIdx;
Tcl_Obj **listv, *valuePtr;
/*
* Pop the list and get the indices
*/
valuePtr = *tosPtr;
fromIdx = TclGetInt4AtPtr(pc+1);
toIdx = TclGetInt4AtPtr(pc+5);
/*
* Get the contents of the list, making sure that it really is a list
* in the process.
*/
result = Tcl_ListObjGetElements(interp, valuePtr, &listc, &listv);
if (result != TCL_OK) {
TRACE_WITH_OBJ(("\"%.30s\" %d %d => ERROR: ", O2S(valuePtr),
fromIdx, toIdx), Tcl_GetObjResult(interp));
goto checkForCatch;
}
/*
* Skip a lot of work if we're about to throw the result away (common
* with uses of [lassign].)
*/
#ifndef TCL_COMPILE_DEBUG
if (*(pc+9) == INST_POP) {
NEXT_INST_F(10, 1, 0);
}
#endif
/*
* Adjust the indices for end-based handling.
*/
if (fromIdx < -1) {
fromIdx += 1+listc;
if (fromIdx < -1) {
fromIdx = -1;
}
} else if (fromIdx > listc) {
fromIdx = listc;
}
if (toIdx < -1) {
toIdx += 1+listc;
if (toIdx < -1) {
toIdx = -1;
}
} else if (toIdx > listc) {
toIdx = listc;
}
/*
* Check if we are referring to a valid, non-empty list range, and if
* so, build the list of elements in that range.
*/
if (fromIdx<=toIdx && fromIdx<listc && toIdx>=0) {
if (fromIdx<0) {
fromIdx = 0;
}
if (toIdx >= listc) {
toIdx = listc-1;
}
objResultPtr = Tcl_NewListObj(toIdx-fromIdx+1, listv+fromIdx);
} else {
TclNewObj(objResultPtr);
}
TRACE_WITH_OBJ(("\"%.30s\" %d %d => ", O2S(valuePtr),
TclGetInt4AtPtr(pc+1), TclGetInt4AtPtr(pc+5)), objResultPtr);
NEXT_INST_F(9, 1, 1);
}
case INST_LIST_IN:
case INST_LIST_NOT_IN: {
/*
* Basic list containment operators.
*/
int found, s1len, s2len, llen, i;
Tcl_Obj *valuePtr, *value2Ptr, *o;
char *s1;
const char *s2;
value2Ptr = *tosPtr;
valuePtr = *(tosPtr - 1);
/* TODO: Consider more efficient tests than strcmp() */
s1 = Tcl_GetStringFromObj(valuePtr, &s1len);
result = Tcl_ListObjLength(interp, value2Ptr, &llen);
if (result != TCL_OK) {
TRACE_WITH_OBJ(("\"%.30s\" \"%.30s\" => ERROR: ", O2S(valuePtr),
O2S(value2Ptr)), Tcl_GetObjResult(interp));
goto checkForCatch;
}
found = 0;
if (llen > 0) {
/*
* An empty list doesn't match anything.
*/
i = 0;
do {
Tcl_ListObjIndex(NULL, value2Ptr, i, &o);
if (o != NULL) {
s2 = Tcl_GetStringFromObj(o, &s2len);
} else {
s2 = "";
}
if (s1len == s2len) {
found = (strcmp(s1, s2) == 0);
}
i++;
} while (i < llen && found == 0);
}
if (*pc == INST_LIST_NOT_IN) {
found = !found;
}
TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), found));
/*
* Peep-hole optimisation: if you're about to jump, do jump from here.
* We're saving the effort of pushing a boolean value only to pop it
* for branching.
*/
pc++;
#ifndef TCL_COMPILE_DEBUG
switch (*pc) {
case INST_JUMP_FALSE1:
NEXT_INST_F((found ? 2 : TclGetInt1AtPtr(pc+1)), 2, 0);
case INST_JUMP_TRUE1:
NEXT_INST_F((found ? TclGetInt1AtPtr(pc+1) : 2), 2, 0);
case INST_JUMP_FALSE4:
NEXT_INST_F((found ? 5 : TclGetInt4AtPtr(pc+1)), 2, 0);
case INST_JUMP_TRUE4:
NEXT_INST_F((found ? TclGetInt4AtPtr(pc+1) : 5), 2, 0);
}
#endif
objResultPtr = eePtr->constants[found];
NEXT_INST_F(0, 2, 1);
}
/*
* End of INST_LIST and related instructions.
* ---------------------------------------------------------
*/
case INST_STR_EQ:
case INST_STR_NEQ: {
/*
* String (in)equality check
* TODO: Consider merging into INST_STR_CMP
*/
int iResult;
Tcl_Obj *valuePtr, *value2Ptr;
value2Ptr = *tosPtr;
valuePtr = *(tosPtr - 1);
if (valuePtr == value2Ptr) {
/*
* On the off-chance that the objects are the same, we don't
* really have to think hard about equality.
*/
iResult = (*pc == INST_STR_EQ);
} else {
char *s1, *s2;
int s1len, s2len;
s1 = Tcl_GetStringFromObj(valuePtr, &s1len);
s2 = Tcl_GetStringFromObj(value2Ptr, &s2len);
if (s1len == s2len) {
/*
* We only need to check (in)equality when we have equal
* length strings.
*/
if (*pc == INST_STR_NEQ) {
iResult = (strcmp(s1, s2) != 0);
} else {
/* INST_STR_EQ */
iResult = (strcmp(s1, s2) == 0);
}
} else {
iResult = (*pc == INST_STR_NEQ);
}
}
TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), iResult));
/*
* Peep-hole optimisation: if you're about to jump, do jump from here.
*/
pc++;
#ifndef TCL_COMPILE_DEBUG
switch (*pc) {
case INST_JUMP_FALSE1:
NEXT_INST_F((iResult? 2 : TclGetInt1AtPtr(pc+1)), 2, 0);
case INST_JUMP_TRUE1:
NEXT_INST_F((iResult? TclGetInt1AtPtr(pc+1) : 2), 2, 0);
case INST_JUMP_FALSE4:
NEXT_INST_F((iResult? 5 : TclGetInt4AtPtr(pc+1)), 2, 0);
case INST_JUMP_TRUE4:
NEXT_INST_F((iResult? TclGetInt4AtPtr(pc+1) : 5), 2, 0);
}
#endif
objResultPtr = eePtr->constants[iResult];
NEXT_INST_F(0, 2, 1);
}
case INST_STR_CMP: {
/*
* String compare
*/
const char *s1, *s2;
int s1len, s2len, iResult;
Tcl_Obj *valuePtr, *value2Ptr;
stringCompare:
value2Ptr = *tosPtr;
valuePtr = *(tosPtr - 1);
/*
* The comparison function should compare up to the minimum byte
* length only.
*/
if (valuePtr == value2Ptr) {
/*
* In the pure equality case, set lengths too for the checks below
* (or we could goto beyond it).
*/
iResult = s1len = s2len = 0;
} else if ((valuePtr->typePtr == &tclByteArrayType)
&& (value2Ptr->typePtr == &tclByteArrayType)) {
s1 = (char *) Tcl_GetByteArrayFromObj(valuePtr, &s1len);
s2 = (char *) Tcl_GetByteArrayFromObj(value2Ptr, &s2len);
iResult = memcmp(s1, s2,
(size_t) ((s1len < s2len) ? s1len : s2len));
} else if (((valuePtr->typePtr == &tclStringType)
&& (value2Ptr->typePtr == &tclStringType))) {
/*
* Do a unicode-specific comparison if both of the args are of
* String type. If the char length == byte length, we can do a
* memcmp. In benchmark testing this proved the most efficient
* check between the unicode and string comparison operations.
*/
s1len = Tcl_GetCharLength(valuePtr);
s2len = Tcl_GetCharLength(value2Ptr);
if ((s1len == valuePtr->length) && (s2len == value2Ptr->length)) {
iResult = memcmp(valuePtr->bytes, value2Ptr->bytes,
(unsigned) ((s1len < s2len) ? s1len : s2len));
} else {
iResult = TclUniCharNcmp(Tcl_GetUnicode(valuePtr),
Tcl_GetUnicode(value2Ptr),
(unsigned) ((s1len < s2len) ? s1len : s2len));
}
} else {
/*
* We can't do a simple memcmp in order to handle the special Tcl
* \xC0\x80 null encoding for utf-8.
*/
s1 = Tcl_GetStringFromObj(valuePtr, &s1len);
s2 = Tcl_GetStringFromObj(value2Ptr, &s2len);
iResult = TclpUtfNcmp2(s1, s2,
(size_t) ((s1len < s2len) ? s1len : s2len));
}
/*
* Make sure only -1,0,1 is returned
* TODO: consider peephole opt.
*/
if (iResult == 0) {
iResult = s1len - s2len;
}
if (*pc != INST_STR_CMP) {
/*
* Take care of the opcodes that goto'ed into here.
*/
switch (*pc) {
case INST_EQ:
iResult = (iResult == 0);
break;
case INST_NEQ:
iResult = (iResult != 0);
break;
case INST_LT:
iResult = (iResult < 0);
break;
case INST_GT:
iResult = (iResult > 0);
break;
case INST_LE:
iResult = (iResult <= 0);
break;
case INST_GE:
iResult = (iResult >= 0);
break;
}
}
if (iResult < 0) {
TclNewIntObj(objResultPtr, -1);
TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), -1));
} else {
objResultPtr = eePtr->constants[(iResult>0)];
TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr),
(iResult > 0)));
}
NEXT_INST_F(1, 2, 1);
}
case INST_STR_LEN: {
int length;
Tcl_Obj *valuePtr;
valuePtr = *tosPtr;
if (valuePtr->typePtr == &tclByteArrayType) {
(void) Tcl_GetByteArrayFromObj(valuePtr, &length);
} else {
length = Tcl_GetCharLength(valuePtr);
}
TclNewIntObj(objResultPtr, length);
TRACE(("%.20s => %d\n", O2S(valuePtr), length));
NEXT_INST_F(1, 1, 1);
}
case INST_STR_INDEX: {
/*
* String compare
*/
int index, length;
char *bytes;
Tcl_Obj *valuePtr, *value2Ptr;
bytes = NULL; /* lint */
value2Ptr = *tosPtr;
valuePtr = *(tosPtr - 1);
/*
* If we have a ByteArray object, avoid indexing in the Utf string
* since the byte array contains one byte per character. Otherwise,
* use the Unicode string rep to get the index'th char.
*/
if (valuePtr->typePtr == &tclByteArrayType) {
bytes = (char *)Tcl_GetByteArrayFromObj(valuePtr, &length);
} else {
/*
* Get Unicode char length to calulate what 'end' means.
*/
length = Tcl_GetCharLength(valuePtr);
}
result = TclGetIntForIndex(interp, value2Ptr, length - 1, &index);
if (result != TCL_OK) {
goto checkForCatch;
}
if ((index >= 0) && (index < length)) {
if (valuePtr->typePtr == &tclByteArrayType) {
objResultPtr = Tcl_NewByteArrayObj((unsigned char *)
(&bytes[index]), 1);
} else if (valuePtr->bytes && length == valuePtr->length) {
objResultPtr = Tcl_NewStringObj((const char *)
(&valuePtr->bytes[index]), 1);
} else {
char buf[TCL_UTF_MAX];
Tcl_UniChar ch;
ch = Tcl_GetUniChar(valuePtr, index);
/*
* This could be: Tcl_NewUnicodeObj((const Tcl_UniChar *)&ch,
* 1) but creating the object as a string seems to be faster
* in practical use.
*/
length = Tcl_UniCharToUtf(ch, buf);
objResultPtr = Tcl_NewStringObj(buf, length);
}
} else {
TclNewObj(objResultPtr);
}
TRACE(("%.20s %.20s => %s\n", O2S(valuePtr), O2S(value2Ptr),
O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
case INST_STR_MATCH: {
int nocase, match;
Tcl_Obj *valuePtr, *value2Ptr;
nocase = TclGetInt1AtPtr(pc+1);
valuePtr = *tosPtr; /* String */
value2Ptr = *(tosPtr - 1); /* Pattern */
/*
* Check that at least one of the objects is Unicode before promoting
* both.
*/
if ((valuePtr->typePtr == &tclStringType)
|| (value2Ptr->typePtr == &tclStringType)) {
Tcl_UniChar *ustring1, *ustring2;
int length1, length2;
ustring1 = Tcl_GetUnicodeFromObj(valuePtr, &length1);
ustring2 = Tcl_GetUnicodeFromObj(value2Ptr, &length2);
match = TclUniCharMatch(ustring1, length1, ustring2, length2,
nocase);
} else {
match = Tcl_StringCaseMatch(TclGetString(valuePtr),
TclGetString(value2Ptr), nocase);
}
/*
* Reuse value2Ptr object already on stack if possible. Adjustment is
* 2 due to the nocase byte
* TODO: consider peephole opt.
*/
TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), match));
objResultPtr = eePtr->constants[match];
NEXT_INST_F(2, 2, 1);
}
case INST_EQ:
case INST_NEQ:
case INST_LT:
case INST_GT:
case INST_LE:
case INST_GE: {
Tcl_Obj *valuePtr = *(tosPtr - 1);
Tcl_Obj *value2Ptr = *tosPtr;
ClientData ptr1, ptr2;
int iResult = 0, compare = 0, type1, type2;
double d1, d2, tmp;
long l1, l2;
mp_int big1, big2;
#ifndef NO_WIDE_TYPE
Tcl_WideInt w1, w2;
#endif
if (GetNumberFromObj(NULL, valuePtr, &ptr1, &type1) != TCL_OK) {
/*
* At least one non-numeric argument - compare as strings.
*/
goto stringCompare;
}
if (type1 == TCL_NUMBER_NAN) {
/*
* NaN first arg: NaN != to everything, other compares are false.
*/
iResult = (*pc == INST_NEQ);
goto foundResult;
}
if (valuePtr == value2Ptr) {
compare = MP_EQ;
goto convertComparison;
}
if (GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2) != TCL_OK) {
/*
* At least one non-numeric argument - compare as strings.
*/
goto stringCompare;
}
if (type2 == TCL_NUMBER_NAN) {
/*
* NaN 2nd arg: NaN != to everything, other compares are false.
*/
iResult = (*pc == INST_NEQ);
goto foundResult;
}
switch (type1) {
case TCL_NUMBER_LONG:
l1 = *((const long *)ptr1);
switch (type2) {
case TCL_NUMBER_LONG:
l2 = *((const long *)ptr2);
longCompare:
compare = (l1 < l2) ? MP_LT : ((l1 > l2) ? MP_GT : MP_EQ);
break;
#ifndef NO_WIDE_TYPE
case TCL_NUMBER_WIDE:
w2 = *((const Tcl_WideInt *)ptr2);
w1 = (Tcl_WideInt)l1;
goto wideCompare;
#endif
case TCL_NUMBER_DOUBLE:
d2 = *((const double *)ptr2);
d1 = (double) l1;
/*
* If the double has a fractional part, or if the long can be
* converted to double without loss of precision, then compare
* as doubles.
*/
if (DBL_MANT_DIG > CHAR_BIT*sizeof(long)
|| l1 == (long) d1
|| modf(d2, &tmp) != 0.0) {
goto doubleCompare;
}
/*
* Otherwise, to make comparision based on full precision,
* need to convert the double to a suitably sized integer.
*
* Need this to get comparsions like
* expr 20000000000000003 < 20000000000000004.0
* right. Converting the first argument to double will yield
* two double values that are equivalent within double
* precision. Converting the double to an integer gets done
* exactly, then integer comparison can tell the difference.
*/
if (d2 < (double)LONG_MIN) {
compare = MP_GT;
break;
}
if (d2 > (double)LONG_MAX) {
compare = MP_LT;
break;
}
l2 = (long) d2;
goto longCompare;
case TCL_NUMBER_BIG:
Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
if (mp_cmp_d(&big2, 0) == MP_LT) {
compare = MP_GT;
} else {
compare = MP_LT;
}
mp_clear(&big2);
}
break;
#ifndef NO_WIDE_TYPE
case TCL_NUMBER_WIDE:
w1 = *((const Tcl_WideInt *)ptr1);
switch (type2) {
case TCL_NUMBER_WIDE:
w2 = *((const Tcl_WideInt *)ptr2);
wideCompare:
compare = (w1 < w2) ? MP_LT : ((w1 > w2) ? MP_GT : MP_EQ);
break;
case TCL_NUMBER_LONG:
l2 = *((const long *)ptr2);
w2 = (Tcl_WideInt)l2;
goto wideCompare;
case TCL_NUMBER_DOUBLE:
d2 = *((const double *)ptr2);
d1 = (double) w1;
if (DBL_MANT_DIG > CHAR_BIT*sizeof(Tcl_WideInt)
|| w1 == (Tcl_WideInt) d1
|| modf(d2, &tmp) != 0.0) {
goto doubleCompare;
}
if (d2 < (double)LLONG_MIN) {
compare = MP_GT;
break;
}
if (d2 > (double)LLONG_MAX) {
compare = MP_LT;
break;
}
w2 = (Tcl_WideInt) d2;
goto wideCompare;
case TCL_NUMBER_BIG:
Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
if (mp_cmp_d(&big2, 0) == MP_LT) {
compare = MP_GT;
} else {
compare = MP_LT;
}
mp_clear(&big2);
}
break;
#endif
case TCL_NUMBER_DOUBLE:
d1 = *((const double *)ptr1);
switch (type2) {
case TCL_NUMBER_DOUBLE:
d2 = *((const double *)ptr2);
doubleCompare:
compare = (d1 < d2) ? MP_LT : ((d1 > d2) ? MP_GT : MP_EQ);
break;
case TCL_NUMBER_LONG:
l2 = *((const long *)ptr2);
d2 = (double) l2;
if (DBL_MANT_DIG > CHAR_BIT*sizeof(long)
|| l2 == (long) d2
|| modf(d1, &tmp) != 0.0) {
goto doubleCompare;
}
if (d1 < (double)LONG_MIN) {
compare = MP_LT;
break;
}
if (d1 > (double)LONG_MAX) {
compare = MP_GT;
break;
}
l1 = (long) d1;
goto longCompare;
#ifndef NO_WIDE_TYPE
case TCL_NUMBER_WIDE:
w2 = *((const Tcl_WideInt *)ptr2);
d2 = (double) w2;
if (DBL_MANT_DIG > CHAR_BIT*sizeof(Tcl_WideInt)
|| w2 == (Tcl_WideInt) d2
|| modf(d1, &tmp) != 0.0) {
goto doubleCompare;
}
if (d1 < (double)LLONG_MIN) {
compare = MP_LT;
break;
}
if (d1 > (double)LLONG_MAX) {
compare = MP_GT;
break;
}
w1 = (Tcl_WideInt) d1;
goto wideCompare;
#endif
case TCL_NUMBER_BIG:
if (TclIsInfinite(d1)) {
compare = (d1 > 0.0) ? MP_GT : MP_LT;
break;
}
Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
if ((d1 < (double)LONG_MAX) && (d1 > (double)LONG_MIN)) {
if (mp_cmp_d(&big2, 0) == MP_LT) {
compare = MP_GT;
} else {
compare = MP_LT;
}
mp_clear(&big2);
break;
}
if (DBL_MANT_DIG > CHAR_BIT*sizeof(long)
&& modf(d1, &tmp) != 0.0) {
d2 = TclBignumToDouble(&big2);
mp_clear(&big2);
goto doubleCompare;
}
Tcl_InitBignumFromDouble(NULL, d1, &big1);
goto bigCompare;
}
break;
case TCL_NUMBER_BIG:
Tcl_TakeBignumFromObj(NULL, valuePtr, &big1);
switch (type2) {
#ifndef NO_WIDE_TYPE
case TCL_NUMBER_WIDE:
#endif
case TCL_NUMBER_LONG:
compare = mp_cmp_d(&big1, 0);
mp_clear(&big1);
break;
case TCL_NUMBER_DOUBLE:
d2 = *((const double *)ptr2);
if (TclIsInfinite(d2)) {
compare = (d2 > 0.0) ? MP_LT : MP_GT;
mp_clear(&big1);
break;
}
if ((d2 < (double)LONG_MAX) && (d2 > (double)LONG_MIN)) {
compare = mp_cmp_d(&big1, 0);
mp_clear(&big1);
break;
}
if (DBL_MANT_DIG > CHAR_BIT*sizeof(long)
&& modf(d2, &tmp) != 0.0) {
d1 = TclBignumToDouble(&big1);
mp_clear(&big1);
goto doubleCompare;
}
Tcl_InitBignumFromDouble(NULL, d2, &big2);
goto bigCompare;
case TCL_NUMBER_BIG:
Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
bigCompare:
compare = mp_cmp(&big1, &big2);
mp_clear(&big1);
mp_clear(&big2);
}
}
/*
* Turn comparison outcome into appropriate result for opcode.
*/
convertComparison:
switch (*pc) {
case INST_EQ:
iResult = (compare == MP_EQ);
break;
case INST_NEQ:
iResult = (compare != MP_EQ);
break;
case INST_LT:
iResult = (compare == MP_LT);
break;
case INST_GT:
iResult = (compare == MP_GT);
break;
case INST_LE:
iResult = (compare != MP_GT);
break;
case INST_GE:
iResult = (compare != MP_LT);
break;
}
/*
* Peep-hole optimisation: if you're about to jump, do jump from here.
*/
foundResult:
pc++;
#ifndef TCL_COMPILE_DEBUG
switch (*pc) {
case INST_JUMP_FALSE1:
NEXT_INST_F((iResult? 2 : TclGetInt1AtPtr(pc+1)), 2, 0);
case INST_JUMP_TRUE1:
NEXT_INST_F((iResult? TclGetInt1AtPtr(pc+1) : 2), 2, 0);
case INST_JUMP_FALSE4:
NEXT_INST_F((iResult? 5 : TclGetInt4AtPtr(pc+1)), 2, 0);
case INST_JUMP_TRUE4:
NEXT_INST_F((iResult? TclGetInt4AtPtr(pc+1) : 5), 2, 0);
}
#endif
objResultPtr = eePtr->constants[iResult];
NEXT_INST_F(0, 2, 1);
}
case INST_MOD:
case INST_LSHIFT:
case INST_RSHIFT: {
Tcl_Obj *value2Ptr = *tosPtr;
Tcl_Obj *valuePtr = *(tosPtr - 1);
ClientData ptr1, ptr2;
int invalid, shift, type1, type2;
long l1;
result = GetNumberFromObj(NULL, valuePtr, &ptr1, &type1);
if ((result != TCL_OK)
|| (type1 == TCL_NUMBER_DOUBLE) || (type1 == TCL_NUMBER_NAN)) {
result = TCL_ERROR;
TRACE(("%.20s %.20s => ILLEGAL 1st TYPE %s\n", O2S(valuePtr),
O2S(value2Ptr), (valuePtr->typePtr?
valuePtr->typePtr->name : "null")));
IllegalExprOperandType(interp, pc, valuePtr);
goto checkForCatch;
}
result = GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2);
if ((result != TCL_OK)
|| (type2 == TCL_NUMBER_DOUBLE) || (type2 == TCL_NUMBER_NAN)) {
result = TCL_ERROR;
TRACE(("%.20s %.20s => ILLEGAL 2nd TYPE %s\n", O2S(valuePtr),
O2S(value2Ptr), (value2Ptr->typePtr?
value2Ptr->typePtr->name : "null")));
IllegalExprOperandType(interp, pc, value2Ptr);
goto checkForCatch;
}
if (*pc == INST_MOD) {
/* TODO: Attempts to re-use unshared operands on stack */
long l2 = 0; /* silence gcc warning */
if (type2 == TCL_NUMBER_LONG) {
l2 = *((const long *)ptr2);
if (l2 == 0) {
TRACE(("%s %s => DIVIDE BY ZERO\n", O2S(valuePtr),
O2S(value2Ptr)));
goto divideByZero;
}
if ((l2 == 1) || (l2 == -1)) {
/*
* Div. by |1| always yields remainder of 0
*/
objResultPtr = eePtr->constants[0];
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
}
if (type1 == TCL_NUMBER_LONG) {
l1 = *((const long *)ptr1);
if (l1 == 0) {
/*
* 0 % (non-zero) always yields remainder of 0
*/
objResultPtr = eePtr->constants[0];
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
if (type2 == TCL_NUMBER_LONG) {
/*
* Both operands are long; do native calculation.
*/
long lRemainder, lQuotient = l1 / l2;
/*
* Force Tcl's integer division rules.
*
* TODO: examine for logic simplification
*/
if ((lQuotient < 0 || (lQuotient == 0 &&
((l1 < 0 && l2 > 0) || (l1 > 0 && l2 < 0)))) &&
(lQuotient * l2 != l1)) {
lQuotient -= 1;
}
lRemainder = l1 - l2*lQuotient;
TclNewLongObj(objResultPtr, lRemainder);
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
/*
* First operand fits in long; second does not, so the second
* has greater magnitude than first. No need to divide to
* determine the remainder.
*/
#ifndef NO_WIDE_TYPE
if (type2 == TCL_NUMBER_WIDE) {
Tcl_WideInt w2 = *((const Tcl_WideInt *)ptr2);
if ((l1 > 0) ^ (w2 > (Tcl_WideInt)0)) {
/*
* Arguments are opposite sign; remainder is sum.
*/
objResultPtr = Tcl_NewWideIntObj(w2+(Tcl_WideInt)l1);
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
/*
* Arguments are same sign; remainder is first operand.
*/
TRACE(("%s\n", O2S(valuePtr)));
NEXT_INST_F(1, 1, 0);
}
#endif
{
mp_int big2;
Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
/* TODO: internals intrusion */
if ((l1 > 0) ^ (big2.sign == MP_ZPOS)) {
/*
* Arguments are opposite sign; remainder is sum.
*/
mp_int big1;
TclBNInitBignumFromLong(&big1, l1);
mp_add(&big2, &big1, &big2);
objResultPtr = Tcl_NewBignumObj(&big2);
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
/*
* Arguments are same sign; remainder is first operand.
*/
TRACE(("%s\n", O2S(valuePtr)));
NEXT_INST_F(1, 1, 0);
}
}
#ifndef NO_WIDE_TYPE
if (type1 == TCL_NUMBER_WIDE) {
Tcl_WideInt w1 = *((const Tcl_WideInt *)ptr1);
if (type2 != TCL_NUMBER_BIG) {
Tcl_WideInt w2, wQuotient, wRemainder;
Tcl_GetWideIntFromObj(NULL, value2Ptr, &w2);
wQuotient = w1 / w2;
/*
* Force Tcl's integer division rules.
*
* TODO: examine for logic simplification
*/
if (((wQuotient < (Tcl_WideInt) 0)
|| ((wQuotient == (Tcl_WideInt) 0)
&& ((w1 < (Tcl_WideInt)0 && w2 > (Tcl_WideInt)0)
|| (w1 > (Tcl_WideInt)0 && w2 < (Tcl_WideInt)0))))
&& (wQuotient * w2 != w1)) {
wQuotient -= (Tcl_WideInt) 1;
}
wRemainder = w1 - w2*wQuotient;
objResultPtr = Tcl_NewWideIntObj(wRemainder);
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
{
mp_int big2;
Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
/* TODO: internals intrusion */
if ((w1 > ((Tcl_WideInt) 0)) ^ (big2.sign == MP_ZPOS)) {
/*
* Arguments are opposite sign; remainder is sum.
*/
mp_int big1;
TclBNInitBignumFromWideInt(&big1, w1);
mp_add(&big2, &big1, &big2);
objResultPtr = Tcl_NewBignumObj(&big2);
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
/*
* Arguments are same sign; remainder is first operand.
*/
TRACE(("%s\n", O2S(valuePtr)));
NEXT_INST_F(1, 1, 0);
}
}
#endif
{
mp_int big1, big2, bigResult, bigRemainder;
Tcl_GetBignumFromObj(NULL, valuePtr, &big1);
Tcl_GetBignumFromObj(NULL, value2Ptr, &big2);
mp_init(&bigResult);
mp_init(&bigRemainder);
mp_div(&big1, &big2, &bigResult, &bigRemainder);
if (!mp_iszero(&bigRemainder)
&& (bigRemainder.sign != big2.sign)) {
/*
* Convert to Tcl's integer division rules.
*/
mp_sub_d(&bigResult, 1, &bigResult);
mp_add(&bigRemainder, &big2, &bigRemainder);
}
mp_copy(&bigRemainder, &bigResult);
mp_clear(&bigRemainder);
mp_clear(&big1);
mp_clear(&big2);
TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
if (Tcl_IsShared(valuePtr)) {
objResultPtr = Tcl_NewBignumObj(&bigResult);
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
Tcl_SetBignumObj(valuePtr, &bigResult);
TRACE(("%s\n", O2S(valuePtr)));
NEXT_INST_F(1, 1, 0);
}
}
/*
* Reject negative shift argument.
*/
switch (type2) {
case TCL_NUMBER_LONG:
invalid = (*((const long *)ptr2) < (long)0);
break;
#ifndef NO_WIDE_TYPE
case TCL_NUMBER_WIDE:
invalid = (*((const Tcl_WideInt *)ptr2) < (Tcl_WideInt)0);
break;
#endif
case TCL_NUMBER_BIG:
/* TODO: const correctness? */
invalid = (mp_cmp_d((mp_int *)ptr2, 0) == MP_LT);
break;
default:
/* Unused, here to silence compiler warning */
invalid = 0;
}
if (invalid) {
Tcl_SetObjResult(interp,
Tcl_NewStringObj("negative shift argument", -1));
result = TCL_ERROR;
goto checkForCatch;
}
/*
* Zero shifted any number of bits is still zero.
*/
if ((type1 == TCL_NUMBER_LONG) && (*((const long *)ptr1) == (long)0)) {
TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
objResultPtr = eePtr->constants[0];
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
if (*pc == INST_LSHIFT) {
/*
* Large left shifts create integer overflow.
*
* BEWARE! Can't use Tcl_GetIntFromObj() here because that
* converts values in the (unsigned int) range to their signed int
* counterparts, leading to incorrect results.
*/
if ((type2 != TCL_NUMBER_LONG)
|| (*((const long *)ptr2) > (long) INT_MAX)) {
/*
* Technically, we could hold the value (1 << (INT_MAX+1)) in
* an mp_int, but since we're using mp_mul_2d() to do the
* work, and it takes only an int argument, that's a good
* place to draw the line.
*/
Tcl_SetObjResult(interp, Tcl_NewStringObj(
"integer value too large to represent", -1));
result = TCL_ERROR;
goto checkForCatch;
}
shift = (int)(*((const long *)ptr2));
/*
* Handle shifts within the native long range.
*/
TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
if ((type1 == TCL_NUMBER_LONG)
&& (size_t) shift < CHAR_BIT*sizeof(long)
&& l1 == *(const long *)ptr1
&& !((l1>0 ? l1 : ~l1)
& -(1L<<(CHAR_BIT*sizeof(long) - 1 - shift)))) {
TclNewLongObj(objResultPtr, (l1<<shift));
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
/*
* Handle shifts within the native wide range.
*/
TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
if ((type1 != TCL_NUMBER_BIG)
&& ((size_t)shift < CHAR_BIT*sizeof(Tcl_WideInt))) {
Tcl_WideInt w;
TclGetWideIntFromObj(NULL, valuePtr, &w);
if (!((w>0 ? w : ~w)
& -(((Tcl_WideInt)1)
<< (CHAR_BIT*sizeof(Tcl_WideInt) - 1 - shift)))) {
objResultPtr = Tcl_NewWideIntObj(w<<shift);
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
}
} else {
/*
* Quickly force large right shifts to 0 or -1
*/
TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
if ((type2 != TCL_NUMBER_LONG)
|| (*(const long *)ptr2 > INT_MAX)) {
/*
* Again, technically, the value to be shifted could be an
* mp_int so huge that a right shift by (INT_MAX+1) bits could
* not take us to the result of 0 or -1, but since we're using
* mp_div_2d to do the work, and it takes only an int
* argument, we draw the line there.
*/
int zero;
switch (type1) {
case TCL_NUMBER_LONG:
zero = (*(const long *)ptr1 > 0L);
break;
#ifndef NO_WIDE_TYPE
case TCL_NUMBER_WIDE:
zero = (*(const Tcl_WideInt *)ptr1 > (Tcl_WideInt)0);
break;
#endif
case TCL_NUMBER_BIG:
/* TODO: const correctness ? */
zero = (mp_cmp_d((mp_int *)ptr1, 0) == MP_GT);
break;
default:
/* Unused, here to silence compiler warning. */
zero = 0;
}
if (zero) {
objResultPtr = eePtr->constants[0];
} else {
TclNewIntObj(objResultPtr, -1);
}
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
shift = (int)(*(const long *)ptr2);
/*
* Handle shifts within the native long range.
*/
if (type1 == TCL_NUMBER_LONG) {
l1 = *((const long *)ptr1);
if ((size_t)shift >= CHAR_BIT*sizeof(long)) {
if (l1 >= (long)0) {
objResultPtr = eePtr->constants[0];
} else {
TclNewIntObj(objResultPtr, -1);
}
} else {
TclNewLongObj(objResultPtr, (l1 >> shift));
}
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
#ifndef NO_WIDE_TYPE
/*
* Handle shifts within the native wide range.
*/
if (type1 == TCL_NUMBER_WIDE) {
Tcl_WideInt w = *(const Tcl_WideInt *)ptr1;
if ((size_t)shift >= CHAR_BIT*sizeof(Tcl_WideInt)) {
if (w >= (Tcl_WideInt)0) {
objResultPtr = eePtr->constants[0];
} else {
TclNewIntObj(objResultPtr, -1);
}
} else {
objResultPtr = Tcl_NewWideIntObj(w >> shift);
}
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
#endif
}
{
mp_int big, bigResult, bigRemainder;
Tcl_TakeBignumFromObj(NULL, valuePtr, &big);
mp_init(&bigResult);
if (*pc == INST_LSHIFT) {
mp_mul_2d(&big, shift, &bigResult);
} else {
mp_init(&bigRemainder);
mp_div_2d(&big, shift, &bigResult, &bigRemainder);
if (mp_cmp_d(&bigRemainder, 0) == MP_LT) {
/*
* Convert to Tcl's integer division rules.
*/
mp_sub_d(&bigResult, 1, &bigResult);
}
mp_clear(&bigRemainder);
}
mp_clear(&big);
if (!Tcl_IsShared(valuePtr)) {
Tcl_SetBignumObj(valuePtr, &bigResult);
TRACE(("%s\n", O2S(valuePtr)));
NEXT_INST_F(1, 1, 0);
}
objResultPtr = Tcl_NewBignumObj(&bigResult);
}
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
case INST_BITOR:
case INST_BITXOR:
case INST_BITAND: {
ClientData ptr1, ptr2;
int type1, type2;
Tcl_Obj *value2Ptr = *tosPtr;
Tcl_Obj *valuePtr = *(tosPtr - 1);
result = GetNumberFromObj(NULL, valuePtr, &ptr1, &type1);
if ((result != TCL_OK)
|| (type1 == TCL_NUMBER_NAN) || (type1 == TCL_NUMBER_DOUBLE)) {
result = TCL_ERROR;
TRACE(("%.20s %.20s => ILLEGAL 1st TYPE %s\n", O2S(valuePtr),
O2S(value2Ptr), (valuePtr->typePtr?
valuePtr->typePtr->name : "null")));
IllegalExprOperandType(interp, pc, valuePtr);
goto checkForCatch;
}
result = GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2);
if ((result != TCL_OK)
|| (type2 == TCL_NUMBER_NAN) || (type2 == TCL_NUMBER_DOUBLE)) {
result = TCL_ERROR;
TRACE(("%.20s %.20s => ILLEGAL 2nd TYPE %s\n", O2S(valuePtr),
O2S(value2Ptr), (value2Ptr->typePtr?
value2Ptr->typePtr->name : "null")));
IllegalExprOperandType(interp, pc, value2Ptr);
goto checkForCatch;
}
if ((type1 == TCL_NUMBER_BIG) || (type2 == TCL_NUMBER_BIG)) {
mp_int big1, big2, bigResult, *First, *Second;
int numPos;
Tcl_TakeBignumFromObj(NULL, valuePtr, &big1);
Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
/*
* Count how many positive arguments we have. If only one of the
* arguments is negative, store it in 'Second'.
*/
if (mp_cmp_d(&big1, 0) != MP_LT) {
numPos = 1 + (mp_cmp_d(&big2, 0) != MP_LT);
First = &big1;
Second = &big2;
} else {
First = &big2;
Second = &big1;
numPos = (mp_cmp_d(First, 0) != MP_LT);
}
mp_init(&bigResult);
switch (*pc) {
case INST_BITAND:
switch (numPos) {
case 2:
/*
* Both arguments positive, base case.
*/
mp_and(First, Second, &bigResult);
break;
case 1:
/*
* First is positive; second negative:
* P & N = P & ~~N = P&~(-N-1) = P & (P ^ (-N-1))
*/
mp_neg(Second, Second);
mp_sub_d(Second, 1, Second);
mp_xor(First, Second, &bigResult);
mp_and(First, &bigResult, &bigResult);
break;
case 0:
/*
* Both arguments negative:
* a & b = ~ (~a | ~b) = -(-a-1|-b-1)-1
*/
mp_neg(First, First);
mp_sub_d(First, 1, First);
mp_neg(Second, Second);
mp_sub_d(Second, 1, Second);
mp_or(First, Second, &bigResult);
mp_neg(&bigResult, &bigResult);
mp_sub_d(&bigResult, 1, &bigResult);
break;
}
break;
case INST_BITOR:
switch (numPos) {
case 2:
/*
* Both arguments positive, base case.
*/
mp_or(First, Second, &bigResult);
break;
case 1:
/*
* First is positive; second negative:
* N|P = ~(~N&~P) = ~((-N-1)&~P) = -((-N-1)&((-N-1)^P))-1
*/
mp_neg(Second, Second);
mp_sub_d(Second, 1, Second);
mp_xor(First, Second, &bigResult);
mp_and(Second, &bigResult, &bigResult);
mp_neg(&bigResult, &bigResult);
mp_sub_d(&bigResult, 1, &bigResult);
break;
case 0:
/*
* Both arguments negative:
* a | b = ~ (~a & ~b) = -(-a-1&-b-1)-1
*/
mp_neg(First, First);
mp_sub_d(First, 1, First);
mp_neg(Second, Second);
mp_sub_d(Second, 1, Second);
mp_and(First, Second, &bigResult);
mp_neg(&bigResult, &bigResult);
mp_sub_d(&bigResult, 1, &bigResult);
break;
}
break;
case INST_BITXOR:
switch (numPos) {
case 2:
/*
* Both arguments positive, base case.
*/
mp_xor(First, Second, &bigResult);
break;
case 1:
/*
* First is positive; second negative:
* P^N = ~(P^~N) = -(P^(-N-1))-1
*/
mp_neg(Second, Second);
mp_sub_d(Second, 1, Second);
mp_xor(First, Second, &bigResult);
mp_neg(&bigResult, &bigResult);
mp_sub_d(&bigResult, 1, &bigResult);
break;
case 0:
/*
* Both arguments negative:
* a ^ b = (~a ^ ~b) = (-a-1^-b-1)
*/
mp_neg(First, First);
mp_sub_d(First, 1, First);
mp_neg(Second, Second);
mp_sub_d(Second, 1, Second);
mp_xor(First, Second, &bigResult);
break;
}
break;
}
mp_clear(&big1);
mp_clear(&big2);
TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
if (Tcl_IsShared(valuePtr)) {
objResultPtr = Tcl_NewBignumObj(&bigResult);
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
Tcl_SetBignumObj(valuePtr, &bigResult);
TRACE(("%s\n", O2S(valuePtr)));
NEXT_INST_F(1, 1, 0);
}
#ifndef NO_WIDE_TYPE
if ((type1 == TCL_NUMBER_WIDE) || (type2 == TCL_NUMBER_WIDE)) {
Tcl_WideInt wResult, w1, w2;
TclGetWideIntFromObj(NULL, valuePtr, &w1);
TclGetWideIntFromObj(NULL, value2Ptr, &w2);
switch (*pc) {
case INST_BITAND:
wResult = w1 & w2;
break;
case INST_BITOR:
wResult = w1 | w2;
break;
case INST_BITXOR:
wResult = w1 ^ w2;
break;
default:
/* Unused, here to silence compiler warning. */
wResult = 0;
}
TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
if (Tcl_IsShared(valuePtr)) {
objResultPtr = Tcl_NewWideIntObj(wResult);
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
Tcl_SetWideIntObj(valuePtr, wResult);
TRACE(("%s\n", O2S(valuePtr)));
NEXT_INST_F(1, 1, 0);
}
#endif
{
long lResult, l1 = *((const long *)ptr1);
long l2 = *((const long *)ptr2);
switch (*pc) {
case INST_BITAND:
lResult = l1 & l2;
break;
case INST_BITOR:
lResult = l1 | l2;
break;
case INST_BITXOR:
lResult = l1 ^ l2;
break;
default:
/* Unused, here to silence compiler warning. */
lResult = 0;
}
TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
if (Tcl_IsShared(valuePtr)) {
TclNewLongObj(objResultPtr, lResult);
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
TclSetLongObj(valuePtr, lResult);
TRACE(("%s\n", O2S(valuePtr)));
NEXT_INST_F(1, 1, 0);
}
}
#if 0
/*
* Macro to read a string containing either a wide or an int and decide which
* it is while decoding it at the same time. This enforces the policy that
* integer constants between LONG_MIN and LONG_MAX (inclusive) are represented
* by normal longs, and integer constants outside that range are represented
* by wide ints.
*/
#define REQUIRE_WIDE_OR_INT(resultVar, objPtr, longVar, wideVar) \
(resultVar) = Tcl_GetWideIntFromObj(interp, (objPtr), &(wideVar)); \
if ((resultVar) == TCL_OK && (wideVar) >= Tcl_LongAsWide(LONG_MIN) \
&& (wideVar) <= Tcl_LongAsWide(LONG_MAX)) { \
(objPtr)->typePtr = &tclIntType; \
(objPtr)->internalRep.longValue = (longVar) \
= Tcl_WideAsLong(wideVar); \
}
#define W0 Tcl_LongAsWide(0)
/*
* For tracing that uses wide values.
*/
#define LLD "%" TCL_LL_MODIFIER "d"
case INST_MOD: {
/*
* Only integers are allowed. We compute value op value2.
*/
long i = 0, i2 = 0, rem, neg_divisor = 0;
long iResult = 0; /* Init. avoids compiler warning. */
Tcl_WideInt w, w2, wResult = W0;
int doWide = 0;
Tcl_Obj *valuePtr, *value2Ptr;
value2Ptr = *tosPtr;
valuePtr = *(tosPtr - 1);
if (valuePtr->typePtr == &tclIntType) {
i = valuePtr->internalRep.longValue;
} else if (valuePtr->typePtr == &tclWideIntType) {
TclGetWide(w,valuePtr);
} else { /* try to convert to int */
REQUIRE_WIDE_OR_INT(result, valuePtr, i, w);
if (result != TCL_OK) {
TRACE(("%.20s %.20s => ILLEGAL 1st TYPE %s\n",
O2S(valuePtr), O2S(value2Ptr),
(valuePtr->typePtr?
valuePtr->typePtr->name : "null")));
IllegalExprOperandType(interp, pc, valuePtr);
goto checkForCatch;
}
}
if (value2Ptr->typePtr == &tclIntType) {
i2 = value2Ptr->internalRep.longValue;
} else if (value2Ptr->typePtr == &tclWideIntType) {
TclGetWide(w2,value2Ptr);
} else {
REQUIRE_WIDE_OR_INT(result, value2Ptr, i2, w2);
if (result != TCL_OK) {
TRACE(("%.20s %.20s => ILLEGAL 2nd TYPE %s\n",
O2S(valuePtr), O2S(value2Ptr),
(value2Ptr->typePtr?
value2Ptr->typePtr->name : "null")));
IllegalExprOperandType(interp, pc, value2Ptr);
goto checkForCatch;
}
}
do {
/*
* This code is tricky: C doesn't guarantee much about the
* quotient or remainder, and results with a negative divisor are
* not specified. Tcl guarantees that the remainder will have the
* same sign as the divisor and a smaller absolute value.
*/
if (value2Ptr->typePtr == &tclWideIntType && w2 == W0) {
if (valuePtr->typePtr == &tclIntType) {
TRACE(("%ld "LLD" => DIVIDE BY ZERO\n", i, w2));
} else {
TRACE((LLD" "LLD" => DIVIDE BY ZERO\n", w, w2));
}
goto divideByZero;
}
if (value2Ptr->typePtr == &tclIntType && i2 == 0) {
if (valuePtr->typePtr == &tclIntType) {
TRACE(("%ld %ld => DIVIDE BY ZERO\n", i, i2));
} else {
TRACE((LLD" %ld => DIVIDE BY ZERO\n", w, i2));
}
goto divideByZero;
}
if (valuePtr->typePtr == &tclWideIntType
|| value2Ptr->typePtr == &tclWideIntType) {
Tcl_WideInt wRemainder;
/*
* Promote to wide
*/
if (valuePtr->typePtr == &tclIntType) {
w = Tcl_LongAsWide(i);
} else if (value2Ptr->typePtr == &tclIntType) {
w2 = Tcl_LongAsWide(i2);
}
if (w == LLONG_MIN && w2 == -1) {
/*
* Integer overflow could happen with (LLONG_MIN % -1)
* even though it is not possible in the code below.
*/
wRemainder = 0;
} else if (w == LLONG_MIN && w2 == LLONG_MAX) {
wRemainder = LLONG_MAX - 1;
} else if (w2 == LLONG_MIN) {
/*
* In C, a modulus operation is not well defined when the
* divisor is a negative number. So w % LLONG_MIN is not
* well defined in the code below because -LLONG_MIN is
* still a negative number.
*/
if (w == 0 || w == LLONG_MIN) {
wRemainder = 0;
} else if (w < 0) {
wRemainder = w;
} else {
wRemainder = LLONG_MIN + w;
}
neg_divisor = 1;
} else {
if (w2 < 0) {
w2 = -w2;
w = -w; /* Note: -LLONG_MIN == LLONG_MIN */
neg_divisor = 1;
}
wRemainder = w % w2;
/*
* remainder is (remainder + divisor) when the remainder
* is negative. Watch out for the special case of a
* LLONG_MIN dividend and a negative divisor. Don't add
* the divisor in that case because the remainder should
* not be negative.
*/
if (wRemainder < 0 && !(neg_divisor && (w == LLONG_MIN))) {
wRemainder += w2;
}
}
if ((neg_divisor && (wRemainder > 0)) ||
(!neg_divisor && (wRemainder < 0))) {
wRemainder = -wRemainder;
}
wResult = wRemainder;
doWide = 1;
break;
}
if (i == LONG_MIN && i2 == -1) {
/*
* Integer overflow could happen with (LONG_MIN % -1) even
* though it is not possible in the code below.
*/
rem = 0;
} else if (i == LONG_MIN && i2 == LONG_MAX) {
rem = LONG_MAX - 1;
} else if (i2 == LONG_MIN) {
/*
* In C, a modulus operation is not well defined when the
* divisor is a negative number. So i % LONG_MIN is not well
* defined in the code below because -LONG_MIN is still a
* negative number.
*/
if (i == 0 || i == LONG_MIN) {
rem = 0;
} else if (i < 0) {
rem = i;
} else {
rem = LONG_MIN + i;
}
neg_divisor = 1;
} else {
if (i2 < 0) {
i2 = -i2;
i = -i; /* Note: -LONG_MIN == LONG_MIN */
neg_divisor = 1;
}
rem = i % i2;
/*
* Remainder is (remainder + divisor) when the remainder is
* negative. Watch out for the special case of a LONG_MIN
* dividend and a negative divisor. Don't add the divisor in
* that case because the remainder should not be negative.
*/
if (rem < 0 && !(neg_divisor && (i == LONG_MIN))) {
rem += i2;
}
}
if ((neg_divisor && (rem > 0)) ||
(!neg_divisor && (rem < 0))) {
rem = -rem;
}
iResult = rem;
} while (0);
/*
* Reuse the valuePtr object already on stack if possible.
*/
if (Tcl_IsShared(valuePtr)) {
if (doWide) {
TclNewWideIntObj(objResultPtr, wResult);
TRACE((LLD" "LLD" => "LLD"\n", w, w2, wResult));
} else {
TclNewLongObj(objResultPtr, iResult);
TRACE(("%ld %ld => %ld\n", i, i2, iResult));
}
NEXT_INST_F(1, 2, 1);
} else { /* reuse the valuePtr object */
if (doWide) {
TRACE((LLD" "LLD" => "LLD"\n", w, w2, wResult));
TclSetWideIntObj(valuePtr, wResult);
} else {
TRACE(("%ld %ld => %ld\n", i, i2, iResult));
TclSetLongObj(valuePtr, iResult);
}
NEXT_INST_F(1, 1, 0);
}
}
#endif
case INST_EXPON:
case INST_ADD:
case INST_SUB:
case INST_DIV:
case INST_MULT: {
ClientData ptr1, ptr2;
int type1, type2;
Tcl_Obj *value2Ptr = *tosPtr;
Tcl_Obj *valuePtr = *(tosPtr - 1);
result = GetNumberFromObj(NULL, valuePtr, &ptr1, &type1);
if ((result != TCL_OK)
#ifndef ACCEPT_NAN
|| (type1 == TCL_NUMBER_NAN)
#endif
) {
result = TCL_ERROR;
TRACE(("%.20s %.20s => ILLEGAL 1st TYPE %s\n",
O2S(value2Ptr), O2S(valuePtr),
(valuePtr->typePtr? valuePtr->typePtr->name: "null")));
IllegalExprOperandType(interp, pc, valuePtr);
goto checkForCatch;
}
#ifdef ACCEPT_NAN
if (type1 == TCL_NUMBER_NAN) {
/*
* NaN first argument -> result is also NaN.
*/
NEXT_INST_F(1, 1, 0);
}
#endif
result = GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2);
if ((result != TCL_OK)
#ifndef ACCEPT_NAN
|| (type2 == TCL_NUMBER_NAN)
#endif
) {
result = TCL_ERROR;
TRACE(("%.20s %.20s => ILLEGAL 2nd TYPE %s\n",
O2S(value2Ptr), O2S(valuePtr),
(value2Ptr->typePtr? value2Ptr->typePtr->name: "null")));
IllegalExprOperandType(interp, pc, value2Ptr);
goto checkForCatch;
}
#ifdef ACCEPT_NAN
if (type2 == TCL_NUMBER_NAN) {
/*
* NaN second argument -> result is also NaN.
*/
objResultPtr = value2Ptr;
NEXT_INST_F(1, 2, 1);
}
#endif
if ((type1 == TCL_NUMBER_DOUBLE) || (type2 == TCL_NUMBER_DOUBLE)) {
/*
* At least one of the values is floating-point, so perform
* floating point calculations.
*/
double d1, d2, dResult;
Tcl_GetDoubleFromObj(NULL, valuePtr, &d1);
Tcl_GetDoubleFromObj(NULL, value2Ptr, &d2);
switch (*pc) {
case INST_ADD:
dResult = d1 + d2;
break;
case INST_SUB:
dResult = d1 - d2;
break;
case INST_MULT:
dResult = d1 * d2;
break;
case INST_DIV:
#ifndef IEEE_FLOATING_POINT
if (d2 == 0.0) {
TRACE(("%.6g %.6g => DIVIDE BY ZERO\n", d1, d2));
goto divideByZero;
}
#endif
/*
* We presume that we are running with zero-divide unmasked if
* we're on an IEEE box. Otherwise, this statement might cause
* demons to fly out our noses.
*/
dResult = d1 / d2;
break;
case INST_EXPON:
if (d1==0.0 && d2<0.0) {
TRACE(("%.6g %.6g => EXPONENT OF ZERO\n", d1, d2));
goto exponOfZero;
}
dResult = pow(d1, d2);
break;
default:
/* Unused, here to silence compiler warning. */
dResult = 0;
}
#ifndef ACCEPT_NAN
/*
* Check now for IEEE floating-point error.
*/
if (TclIsNaN(dResult)) {
TRACE(("%.20s %.20s => IEEE FLOATING PT ERROR\n",
O2S(valuePtr), O2S(value2Ptr)));
TclExprFloatError(interp, dResult);
result = TCL_ERROR;
goto checkForCatch;
}
#endif
TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
if (Tcl_IsShared(valuePtr)) {
TclNewDoubleObj(objResultPtr, dResult);
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
TclSetDoubleObj(valuePtr, dResult);
TRACE(("%s\n", O2S(valuePtr)));
NEXT_INST_F(1, 1, 0);
}
if ((sizeof(long) >= 2*sizeof(int)) && (*pc == INST_MULT)
&& (type1 == TCL_NUMBER_LONG) && (type2 == TCL_NUMBER_LONG)) {
long l1 = *((const long *)ptr1);
long l2 = *((const long *)ptr2);
if ((l1 <= INT_MAX) && (l1 >= INT_MIN)
&& (l2 <= INT_MAX) && (l2 >= INT_MIN)) {
long lResult = l1 * l2;
TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
if (Tcl_IsShared(valuePtr)) {
TclNewLongObj(objResultPtr,lResult);
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
TclSetLongObj(valuePtr, lResult);
TRACE(("%s\n", O2S(valuePtr)));
NEXT_INST_F(1, 1, 0);
}
}
if ((sizeof(Tcl_WideInt) >= 2*sizeof(long)) && (*pc == INST_MULT)
&& (type1 == TCL_NUMBER_LONG) && (type2 == TCL_NUMBER_LONG)) {
Tcl_WideInt w1, w2, wResult;
TclGetWideIntFromObj(NULL, valuePtr, &w1);
TclGetWideIntFromObj(NULL, value2Ptr, &w2);
wResult = w1 * w2;
TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
if (Tcl_IsShared(valuePtr)) {
objResultPtr = Tcl_NewWideIntObj(wResult);
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
Tcl_SetWideIntObj(valuePtr, wResult);
TRACE(("%s\n", O2S(valuePtr)));
NEXT_INST_F(1, 1, 0);
}
/* TODO: Attempts to re-use unshared operands on stack */
if (*pc == INST_EXPON) {
long l1, l2 = 0;
int oddExponent = 0, negativeExponent = 0;
if (type2 == TCL_NUMBER_LONG) {
l2 = *((const long *)ptr2);
if (l2 == 0) {
/*
* Anything to the zero power is 1.
*/
objResultPtr = eePtr->constants[1];
NEXT_INST_F(1, 2, 1);
}
}
switch (type2) {
case TCL_NUMBER_LONG: {
negativeExponent = (l2 < 0);
oddExponent = (int) (l2 & 1);
break;
}
#ifndef NO_WIDE_TYPE
case TCL_NUMBER_WIDE: {
Tcl_WideInt w2 = *((const Tcl_WideInt *)ptr2);
negativeExponent = (w2 < 0);
oddExponent = (int) (w2 & (Tcl_WideInt)1);
break;
}
#endif
case TCL_NUMBER_BIG: {
mp_int big2;
Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
negativeExponent = (mp_cmp_d(&big2, 0) == MP_LT);
mp_mod_2d(&big2, 1, &big2);
oddExponent = !mp_iszero(&big2);
mp_clear(&big2);
break;
}
}
if (negativeExponent) {
if (type1 == TCL_NUMBER_LONG) {
l1 = *((const long *)ptr1);
switch (l1) {
case 0:
/*
* Zero to a negative power is div by zero error.
*/
TRACE(("%s %s => EXPONENT OF ZERO\n", O2S(valuePtr),
O2S(value2Ptr)));
goto exponOfZero;
case -1:
if (oddExponent) {
TclNewIntObj(objResultPtr, -1);
} else {
objResultPtr = eePtr->constants[1];
}
NEXT_INST_F(1, 2, 1);
case 1:
/*
* 1 to any power is 1.
*/
objResultPtr = eePtr->constants[1];
NEXT_INST_F(1, 2, 1);
}
}
/*
* Integers with magnitude greater than 1 raise to a negative
* power yield the answer zero (see TIP 123).
*/
objResultPtr = eePtr->constants[0];
NEXT_INST_F(1, 2, 1);
}
if (type1 == TCL_NUMBER_LONG) {
l1 = *((const long *)ptr1);
switch (l1) {
case 0:
/*
* Zero to a positive power is zero.
*/
objResultPtr = eePtr->constants[0];
NEXT_INST_F(1, 2, 1);
case 1:
/*
* 1 to any power is 1.
*/
objResultPtr = eePtr->constants[1];
NEXT_INST_F(1, 2, 1);
case -1:
if (oddExponent) {
TclNewIntObj(objResultPtr, -1);
} else {
objResultPtr = eePtr->constants[1];
}
NEXT_INST_F(1, 2, 1);
}
}
if (type2 == TCL_NUMBER_BIG) {
Tcl_SetObjResult(interp,
Tcl_NewStringObj("exponent too large", -1));
result = TCL_ERROR;
goto checkForCatch;
}
/* TODO: Perform those computations that fit in native types */
goto overflow;
}
if ((*pc != INST_MULT)
&& (type1 != TCL_NUMBER_BIG) && (type2 != TCL_NUMBER_BIG)) {
Tcl_WideInt w1, w2, wResult;
TclGetWideIntFromObj(NULL, valuePtr, &w1);
TclGetWideIntFromObj(NULL, value2Ptr, &w2);
switch (*pc) {
case INST_ADD:
wResult = w1 + w2;
#ifndef NO_WIDE_TYPE
if ((type1 == TCL_NUMBER_WIDE) || (type2 == TCL_NUMBER_WIDE))
#endif
{
/*
* Check for overflow.
*/
if (((w1 < 0) && (w2 < 0) && (wResult >= 0))
|| ((w1 > 0) && (w2 > 0) && (wResult < 0))) {
goto overflow;
}
}
break;
case INST_SUB:
wResult = w1 - w2;
#ifndef NO_WIDE_TYPE
if ((type1 == TCL_NUMBER_WIDE) || (type2 == TCL_NUMBER_WIDE))
#endif
{
/*
* Must check for overflow.
*/
if (((w1 < 0) && (w2 > 0) && (wResult > 0))
|| ((w1 >= 0) && (w2 < 0) && (wResult < 0))) {
goto overflow;
}
}
break;
case INST_DIV:
if (w2 == 0) {
TRACE(("%s %s => DIVIDE BY ZERO\n",
O2S(valuePtr), O2S(value2Ptr)));
goto divideByZero;
}
/*
* Need a bignum to represent (LLONG_MIN / -1)
*/
if ((w1 == LLONG_MIN) && (w2 == -1)) {
goto overflow;
}
wResult = w1 / w2;
/*
* Force Tcl's integer division rules.
* TODO: examine for logic simplification
*/
if (((wResult < 0) || ((wResult == 0) &&
((w1 < 0 && w2 > 0) || (w1 > 0 && w2 < 0)))) &&
((wResult * w2) != w1)) {
wResult -= 1;
}
break;
default:
/*
* Unused, here to silence compiler warning.
*/
wResult = 0;
}
TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
if (Tcl_IsShared(valuePtr)) {
objResultPtr = Tcl_NewWideIntObj(wResult);
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
Tcl_SetWideIntObj(valuePtr, wResult);
TRACE(("%s\n", O2S(valuePtr)));
NEXT_INST_F(1, 1, 0);
}
overflow:
{
mp_int big1, big2, bigResult, bigRemainder;
TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
Tcl_TakeBignumFromObj(NULL, valuePtr, &big1);
Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
mp_init(&bigResult);
switch (*pc) {
case INST_ADD:
mp_add(&big1, &big2, &bigResult);
break;
case INST_SUB:
mp_sub(&big1, &big2, &bigResult);
break;
case INST_MULT:
mp_mul(&big1, &big2, &bigResult);
break;
case INST_DIV:
if (mp_iszero(&big2)) {
TRACE(("%s %s => DIVIDE BY ZERO\n", O2S(valuePtr),
O2S(value2Ptr)));
mp_clear(&big1);
mp_clear(&big2);
goto divideByZero;
}
mp_init(&bigRemainder);
mp_div(&big1, &big2, &bigResult, &bigRemainder);
/* TODO: internals intrusion */
if (!mp_iszero(&bigRemainder)
&& (bigRemainder.sign != big2.sign)) {
/*
* Convert to Tcl's integer division rules.
*/
mp_sub_d(&bigResult, 1, &bigResult);
mp_add(&bigRemainder, &big2, &bigRemainder);
}
mp_clear(&bigRemainder);
break;
case INST_EXPON:
if (big2.used > 1) {
Tcl_SetObjResult(interp,
Tcl_NewStringObj("exponent too large", -1));
mp_clear(&big1);
mp_clear(&big2);
result = TCL_ERROR;
goto checkForCatch;
}
mp_expt_d(&big1, big2.dp[0], &bigResult);
break;
}
mp_clear(&big1);
mp_clear(&big2);
if (Tcl_IsShared(valuePtr)) {
objResultPtr = Tcl_NewBignumObj(&bigResult);
TRACE(("%s\n", O2S(objResultPtr)));
NEXT_INST_F(1, 2, 1);
}
Tcl_SetBignumObj(valuePtr, &bigResult);
TRACE(("%s\n", O2S(valuePtr)));
NEXT_INST_F(1, 1, 0);
}
}
case INST_LNOT: {
int b;
Tcl_Obj *valuePtr = *tosPtr;
/* TODO - check claim that taking address of b harms performance */
/* TODO - consider optimization search for eePtr->constants */
result = TclGetBooleanFromObj(NULL, valuePtr, &b);
if (result != TCL_OK) {
TRACE(("\"%.20s\" => ILLEGAL TYPE %s\n", O2S(valuePtr),
(valuePtr->typePtr? valuePtr->typePtr->name : "null")));
IllegalExprOperandType(interp, pc, valuePtr);
goto checkForCatch;
}
/* TODO: Consider peephole opt. */
objResultPtr = eePtr->constants[!b];
NEXT_INST_F(1, 1, 1);
}
case INST_BITNOT: {
mp_int big;
ClientData ptr;
int type;
Tcl_Obj *valuePtr = *tosPtr;
result = GetNumberFromObj(NULL, valuePtr, &ptr, &type);
if ((result != TCL_OK)
|| (type == TCL_NUMBER_NAN) || (type == TCL_NUMBER_DOUBLE)) {
/*
* ... ~$NonInteger => raise an error.
*/
result = TCL_ERROR;
TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(valuePtr),
(valuePtr->typePtr? valuePtr->typePtr->name : "null")));
IllegalExprOperandType(interp, pc, valuePtr);
goto checkForCatch;
}
if (type == TCL_NUMBER_LONG) {
long l = *((const long *)ptr);
if (Tcl_IsShared(valuePtr)) {
TclNewLongObj(objResultPtr, ~l);
NEXT_INST_F(1, 1, 1);
}
TclSetLongObj(valuePtr, ~l);
NEXT_INST_F(1, 0, 0);
}
#ifndef NO_WIDE_TYPE
if (type == TCL_NUMBER_WIDE) {
Tcl_WideInt w = *((const Tcl_WideInt *)ptr);
if (Tcl_IsShared(valuePtr)) {
objResultPtr = Tcl_NewWideIntObj(~w);
NEXT_INST_F(1, 1, 1);
}
Tcl_SetWideIntObj(valuePtr, ~w);
NEXT_INST_F(1, 0, 0);
}
#endif
Tcl_TakeBignumFromObj(NULL, valuePtr, &big);
/* ~a = - a - 1 */
mp_neg(&big, &big);
mp_sub_d(&big, 1, &big);
if (Tcl_IsShared(valuePtr)) {
objResultPtr = Tcl_NewBignumObj(&big);
NEXT_INST_F(1, 1, 1);
}
Tcl_SetBignumObj(valuePtr, &big);
NEXT_INST_F(1, 0, 0);
}
case INST_UMINUS: {
ClientData ptr;
int type;
Tcl_Obj *valuePtr = *tosPtr;
result = GetNumberFromObj(NULL, valuePtr, &ptr, &type);
if ((result != TCL_OK)
#ifndef ACCEPT_NAN
|| (type == TCL_NUMBER_NAN)
#endif
) {
result = TCL_ERROR;
TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(valuePtr),
(valuePtr->typePtr? valuePtr->typePtr->name : "null")));
IllegalExprOperandType(interp, pc, valuePtr);
goto checkForCatch;
}
switch (type) {
case TCL_NUMBER_DOUBLE: {
double d;
if (Tcl_IsShared(valuePtr)) {
TclNewDoubleObj(objResultPtr, -(*((const double *)ptr)));
NEXT_INST_F(1, 1, 1);
}
d = *((const double *)ptr);
TclSetDoubleObj(valuePtr, -d);
NEXT_INST_F(1, 0, 0);
}
case TCL_NUMBER_LONG: {
long l = *((const long *)ptr);
if (l != LONG_MIN) {
if (Tcl_IsShared(valuePtr)) {
TclNewLongObj(objResultPtr, -l);
NEXT_INST_F(1, 1, 1);
}
TclSetLongObj(valuePtr, -l);
NEXT_INST_F(1, 0, 0);
}
/* FALLTHROUGH */
}
#ifndef NO_WIDE_TYPE
case TCL_NUMBER_WIDE: {
Tcl_WideInt w;
if (type == TCL_NUMBER_LONG) {
w = (Tcl_WideInt)(*((const long *)ptr));
} else {
w = *((const Tcl_WideInt *)ptr);
}
if (w != LLONG_MIN) {
if (Tcl_IsShared(valuePtr)) {
objResultPtr = Tcl_NewWideIntObj(-w);
NEXT_INST_F(1, 1, 1);
}
Tcl_SetWideIntObj(valuePtr, -w);
NEXT_INST_F(1, 0, 0);
}
/* FALLTHROUGH */
}
#endif
case TCL_NUMBER_BIG: {
mp_int big;
switch (type) {
#ifdef NO_WIDE_TYPE
case TCL_NUMBER_LONG:
TclBNInitBignumFromLong(&big, *(const long *) ptr);
break;
#else
case TCL_NUMBER_WIDE:
TclBNInitBignumFromWideInt(&big, *(const Tcl_WideInt *) ptr);
break;
#endif
case TCL_NUMBER_BIG:
Tcl_TakeBignumFromObj(NULL, valuePtr, &big);
}
mp_neg(&big, &big);
if (Tcl_IsShared(valuePtr)) {
objResultPtr = Tcl_NewBignumObj(&big);
NEXT_INST_F(1, 1, 1);
}
Tcl_SetBignumObj(valuePtr, &big);
NEXT_INST_F(1, 0, 0);
}
case TCL_NUMBER_NAN:
/* -NaN => NaN */
NEXT_INST_F(1, 0, 0);
}
}
case INST_CALL_BUILTIN_FUNC1: {
Tcl_Panic("TclExecuteByteCode: obsolete INST_CALL_BUILTIN_FUNC1 found");
}
case INST_CALL_FUNC1: {
Tcl_Panic("TclExecuteByteCode: obsolete INST_CALL_FUNC1 found");
}
case INST_UPLUS:
case INST_TRY_CVT_TO_NUMERIC: {
/*
* Try to convert the topmost stack object to numeric object.
* This is done in order to support [expr]'s policy of interpreting
* operands if at all possible as numbers first, then strings.
*/
ClientData ptr;
int type;
Tcl_Obj *valuePtr = *tosPtr;
if (GetNumberFromObj(NULL, valuePtr, &ptr, &type) != TCL_OK) {
if (*pc == INST_UPLUS) {
/* ... +$NonNumeric => raise an error */
result = TCL_ERROR;
TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(valuePtr),
(valuePtr->typePtr? valuePtr->typePtr->name : "null")));
IllegalExprOperandType(interp, pc, valuePtr);
goto checkForCatch;
} else {
/* ... TryConvertToNumeric($NonNumeric) is acceptable */
TRACE(("\"%.20s\" => not numeric\n", O2S(valuePtr)));
NEXT_INST_F(1, 0, 0);
}
}
#ifndef ACCEPT_NAN
if (type == TCL_NUMBER_NAN) {
result = TCL_ERROR;
if (*pc == INST_UPLUS) {
/* ... +$NonNumeric => raise an error */
TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(valuePtr),
(valuePtr->typePtr? valuePtr->typePtr->name : "null")));
IllegalExprOperandType(interp, pc, valuePtr);
} else {
/* Numeric conversion of NaN -> error */
TRACE(("\"%.20s\" => IEEE FLOATING PT ERROR\n",
O2S(objResultPtr)));
TclExprFloatError(interp, *((const double *)ptr));
}
goto checkForCatch;
}
#endif
/*
* Ensure that the numeric value has a string rep the same as the
* formatted version of its internal rep. This is used, e.g., to make
* sure that "expr {0001}" yields "1", not "0001". We implement this
* by _discarding_ the string rep since we know it will be
* regenerated, if needed later, by formatting the internal rep's
* value.
*/
if (valuePtr->bytes == NULL) {
TRACE(("\"%.20s\" => numeric, same Tcl_Obj\n", O2S(valuePtr)));
NEXT_INST_F(1, 0, 0);
}
if (Tcl_IsShared(valuePtr)) {
/*
* Here we do some surgery within the Tcl_Obj internals. We want
* to copy the intrep, but not the string, so we temporarily hide
* the string so we do not copy it.
*/
char *savedString = valuePtr->bytes;
valuePtr->bytes = NULL;
objResultPtr = Tcl_DuplicateObj(valuePtr);
valuePtr->bytes = savedString;
TRACE(("\"%.20s\" => numeric, new Tcl_Obj\n", O2S(valuePtr)));
NEXT_INST_F(1, 1, 1);
}
TclInvalidateStringRep(valuePtr);
TRACE(("\"%.20s\" => numeric, same Tcl_Obj\n", O2S(valuePtr)));
NEXT_INST_F(1, 0, 0);
}
case INST_BREAK:
/*
DECACHE_STACK_INFO();
Tcl_ResetResult(interp);
CACHE_STACK_INFO();
*/
result = TCL_BREAK;
cleanup = 0;
goto processExceptionReturn;
case INST_CONTINUE:
/*
DECACHE_STACK_INFO();
Tcl_ResetResult(interp);
CACHE_STACK_INFO();
*/
result = TCL_CONTINUE;
cleanup = 0;
goto processExceptionReturn;
case INST_FOREACH_START4: {
/*
* Initialize the temporary local var that holds the count of the
* number of iterations of the loop body to -1.
*/
int opnd, iterTmpIndex;
ForeachInfo *infoPtr;
Var *iterVarPtr;
Tcl_Obj *oldValuePtr;
opnd = TclGetUInt4AtPtr(pc+1);
infoPtr = (ForeachInfo *) codePtr->auxDataArrayPtr[opnd].clientData;
iterTmpIndex = infoPtr->loopCtTemp;
iterVarPtr = &(compiledLocals[iterTmpIndex]);
oldValuePtr = iterVarPtr->value.objPtr;
if (oldValuePtr == NULL) {
TclNewLongObj(iterVarPtr->value.objPtr, -1);
Tcl_IncrRefCount(iterVarPtr->value.objPtr);
} else {
TclSetLongObj(oldValuePtr, -1);
}
TclSetVarScalar(iterVarPtr);
TclClearVarUndefined(iterVarPtr);
TRACE(("%u => loop iter count temp %d\n", opnd, iterTmpIndex));
#ifndef TCL_COMPILE_DEBUG
/*
* Remark that the compiler ALWAYS sets INST_FOREACH_STEP4 immediately
* after INST_FOREACH_START4 - let us just fall through instead of
* jumping back to the top.
*/
pc += 5;
#else
NEXT_INST_F(5, 0, 0);
#endif
}
case INST_FOREACH_STEP4: {
/*
* "Step" a foreach loop (i.e., begin its next iteration) by assigning
* the next value list element to each loop var.
*/
int opnd, numLists;
ForeachInfo *infoPtr;
ForeachVarList *varListPtr;
Tcl_Obj *listPtr,*valuePtr, *value2Ptr, **elements;
Var *iterVarPtr, *listVarPtr, *varPtr;
int iterNum, listTmpIndex, listLen, numVars;
int varIndex, valIndex, continueLoop, j;
long i;
char *part1;
opnd = TclGetUInt4AtPtr(pc+1);
infoPtr = (ForeachInfo *) codePtr->auxDataArrayPtr[opnd].clientData;
numLists = infoPtr->numLists;
/*
* Increment the temp holding the loop iteration number.
*/
iterVarPtr = &(compiledLocals[infoPtr->loopCtTemp]);
valuePtr = iterVarPtr->value.objPtr;
iterNum = (valuePtr->internalRep.longValue + 1);
TclSetLongObj(valuePtr, iterNum);
/*
* Check whether all value lists are exhausted and we should stop the
* loop.
*/
continueLoop = 0;
listTmpIndex = infoPtr->firstValueTemp;
for (i = 0; i < numLists; i++) {
varListPtr = infoPtr->varLists[i];
numVars = varListPtr->numVars;
listVarPtr = &(compiledLocals[listTmpIndex]);
listPtr = listVarPtr->value.objPtr;
result = Tcl_ListObjLength(interp, listPtr, &listLen);
if (result != TCL_OK) {
TRACE_WITH_OBJ(("%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 (by calling Tcl_ListObjLength), but cannot rely
* on that check remaining valid: one list could have been shimmered
* as a side effect of setting a traced variable.
*/
if (continueLoop) {
listTmpIndex = infoPtr->firstValueTemp;
for (i = 0; i < numLists; i++) {
varListPtr = infoPtr->varLists[i];
numVars = varListPtr->numVars;
listVarPtr = &(compiledLocals[listTmpIndex]);
listPtr = TclListObjCopy(NULL, listVarPtr->value.objPtr);
Tcl_ListObjGetElements(NULL, listPtr, &listLen, &elements);
valIndex = (iterNum * numVars);
for (j = 0; j < numVars; j++) {
if (valIndex >= listLen) {
TclNewObj(valuePtr);
} else {
valuePtr = elements[valIndex];
}
varIndex = varListPtr->varIndexes[j];
varPtr = &(compiledLocals[varIndex]);
part1 = varPtr->name;
while (TclIsVarLink(varPtr)) {
varPtr = varPtr->value.linkPtr;
}
if (TclIsVarDirectWritable(varPtr)) {
value2Ptr = varPtr->value.objPtr;
if (valuePtr != value2Ptr) {
if (value2Ptr != NULL) {
TclDecrRefCount(value2Ptr);
} else {
TclSetVarScalar(varPtr);
TclClearVarUndefined(varPtr);
}
varPtr->value.objPtr = valuePtr;
Tcl_IncrRefCount(valuePtr);
}
} else {
DECACHE_STACK_INFO();
value2Ptr = TclPtrSetVar(interp, varPtr, NULL, part1,
NULL, valuePtr, TCL_LEAVE_ERR_MSG);
CACHE_STACK_INFO();
if (value2Ptr == NULL) {
TRACE_WITH_OBJ(("%u => ERROR init. index temp %d: ",
opnd, varIndex), Tcl_GetObjResult(interp));
result = TCL_ERROR;
Tcl_DecrRefCount(listPtr);
goto checkForCatch;
}
}
valIndex++;
}
Tcl_DecrRefCount(listPtr);
listTmpIndex++;
}
}
TRACE(("%u => %d lists, iter %d, %s loop\n", opnd, numLists,
iterNum, (continueLoop? "continue" : "exit")));
/*
* Run-time peep-hole optimisation: the compiler ALWAYS follows
* INST_FOREACH_STEP4 with an INST_JUMP_FALSE. We just skip that
* instruction and jump direct from here.
*/
pc += 5;
if (*pc == INST_JUMP_FALSE1) {
NEXT_INST_F((continueLoop? 2 : TclGetInt1AtPtr(pc+1)), 0, 0);
} else {
NEXT_INST_F((continueLoop? 5 : TclGetInt4AtPtr(pc+1)), 0, 0);
}
}
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.
*/
eePtr->stackPtr[++catchTop] = (Tcl_Obj *) (tosPtr - eePtr->stackPtr);
TRACE(("%u => catchTop=%d, stackTop=%d\n",
TclGetUInt4AtPtr(pc+1), (catchTop - initCatchTop - 1),
tosPtr - eePtr->stackPtr));
NEXT_INST_F(5, 0, 0);
case INST_END_CATCH:
catchTop--;
Tcl_ResetResult(interp);
result = TCL_OK;
TRACE(("=> catchTop=%d\n", (catchTop - initCatchTop - 1)));
NEXT_INST_F(1, 0, 0);
case INST_PUSH_RESULT:
objResultPtr = Tcl_GetObjResult(interp);
TRACE_WITH_OBJ(("=> "), objResultPtr);
/*
* See the comments at INST_INVOKE_STK
*/
{
Tcl_Obj *newObjResultPtr;
TclNewObj(newObjResultPtr);
Tcl_IncrRefCount(newObjResultPtr);
iPtr->objResultPtr = newObjResultPtr;
}
NEXT_INST_F(1, 0, -1);
case INST_PUSH_RETURN_CODE:
TclNewIntObj(objResultPtr, result);
TRACE(("=> %u\n", result));
NEXT_INST_F(1, 0, 1);
case INST_PUSH_RETURN_OPTIONS:
objResultPtr = Tcl_GetReturnOptions(interp, result);
TRACE_WITH_OBJ(("=> "), objResultPtr);
NEXT_INST_F(1, 0, 1);
/* TODO: normalize "valPtr" to "valuePtr" */
{
int opnd, opnd2, allocateDict;
Tcl_Obj *dictPtr, *valPtr;
Var *varPtr;
char *part1;
case INST_DICT_GET:
opnd = TclGetUInt4AtPtr(pc+1);
TRACE(("%u => ", opnd));
dictPtr = *(tosPtr - opnd);
if (opnd > 1) {
dictPtr = TclTraceDictPath(interp, dictPtr, opnd-1,
tosPtr - (opnd-1), DICT_PATH_READ);
if (dictPtr == NULL) {
TRACE_WITH_OBJ((
"%u => ERROR tracing dictionary path into \"%s\": ",
opnd, O2S(*(tosPtr - opnd))),
Tcl_GetObjResult(interp));
result = TCL_ERROR;
cleanup = opnd + 1;
goto checkForCatch;
}
}
result = Tcl_DictObjGet(interp, dictPtr, *tosPtr, &objResultPtr);
if (result != TCL_OK) {
TRACE_WITH_OBJ((
"%u => ERROR reading leaf dictionary key \"%s\": ",
opnd, O2S(dictPtr)), Tcl_GetObjResult(interp));
cleanup = opnd + 1;
goto checkForCatch;
}
if (objResultPtr == NULL) {
/*Tcl_ResetResult(interp);*/
Tcl_AppendResult(interp, "key \"", TclGetString(*tosPtr),
"\" not known in dictionary", NULL);
TRACE_WITH_OBJ(("%u => ERROR ", opnd), Tcl_GetObjResult(interp));
result = TCL_ERROR;
cleanup = opnd + 1;
goto checkForCatch;
}
TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
NEXT_INST_V(5, opnd+1, 1);
case INST_DICT_SET:
case INST_DICT_UNSET:
case INST_DICT_INCR_IMM:
opnd = TclGetUInt4AtPtr(pc+1);
opnd2 = TclGetUInt4AtPtr(pc+5);
varPtr = &(compiledLocals[opnd2]);
part1 = varPtr->name;
while (TclIsVarLink(varPtr)) {
varPtr = varPtr->value.linkPtr;
}
TRACE(("%u %u => ", opnd, opnd2));
if (TclIsVarDirectReadable(varPtr)) {
dictPtr = varPtr->value.objPtr;
} else {
DECACHE_STACK_INFO();
dictPtr = TclPtrGetVar(interp, varPtr, NULL, part1, NULL, 0);
CACHE_STACK_INFO();
}
if (dictPtr == NULL) {
TclNewObj(dictPtr);
allocateDict = 1;
} else {
allocateDict = Tcl_IsShared(dictPtr);
if (allocateDict) {
dictPtr = Tcl_DuplicateObj(dictPtr);
}
}
switch (*pc) {
case INST_DICT_SET:
cleanup = opnd + 1;
result = Tcl_DictObjPutKeyList(interp, dictPtr, opnd, tosPtr-opnd,
*tosPtr);
break;
case INST_DICT_INCR_IMM:
cleanup = 1;
opnd = TclGetInt4AtPtr(pc+1);
result = Tcl_DictObjGet(interp, dictPtr, *tosPtr, &valPtr);
if (result != TCL_OK) {
break;
}
if (valPtr == NULL) {
Tcl_DictObjPut(NULL, dictPtr, *tosPtr, Tcl_NewIntObj(opnd));
} else {
Tcl_Obj *incrPtr = Tcl_NewIntObj(opnd);
Tcl_IncrRefCount(incrPtr);
if (Tcl_IsShared(valPtr)) {
valPtr = Tcl_DuplicateObj(valPtr);
Tcl_DictObjPut(NULL, dictPtr, *tosPtr, valPtr);
}
result = TclIncrObj(interp, valPtr, incrPtr);
if (result == TCL_OK) {
Tcl_InvalidateStringRep(dictPtr);
}
Tcl_DecrRefCount(incrPtr);
}
break;
case INST_DICT_UNSET:
cleanup = opnd;
result = Tcl_DictObjRemoveKeyList(interp, dictPtr, opnd,
tosPtr - (opnd-1));
break;
default:
cleanup = 0; /* stop compiler warning */
Tcl_Panic("Should not happen!");
}
if (result != TCL_OK) {
if (allocateDict) {
Tcl_DecrRefCount(dictPtr);
}
TRACE_WITH_OBJ(("%u %u => ERROR updating dictionary: ",opnd,opnd2),
Tcl_GetObjResult(interp));
goto checkForCatch;
}
if (TclIsVarDirectWritable(varPtr)) {
if (allocateDict) {
Tcl_Obj *oldValuePtr = varPtr->value.objPtr;
Tcl_IncrRefCount(dictPtr);
if (oldValuePtr != NULL) {
Tcl_DecrRefCount(oldValuePtr);
} else {
TclSetVarScalar(varPtr);
TclClearVarUndefined(varPtr);
}
varPtr->value.objPtr = dictPtr;
}
objResultPtr = dictPtr;
} else {
Tcl_IncrRefCount(dictPtr);
DECACHE_STACK_INFO();
objResultPtr = TclPtrSetVar(interp, varPtr, NULL, part1, NULL,
dictPtr, TCL_LEAVE_ERR_MSG);
CACHE_STACK_INFO();
Tcl_DecrRefCount(dictPtr);
if (objResultPtr == NULL) {
TRACE_APPEND(("ERROR: %.30s\n",O2S(Tcl_GetObjResult(interp))));
result = TCL_ERROR;
goto checkForCatch;
}
}
#ifndef TCL_COMPILE_DEBUG
if (*(pc+9) == INST_POP) {
NEXT_INST_V(10, cleanup, 0);
}
#endif
TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
NEXT_INST_V(9, cleanup, 1);
case INST_DICT_APPEND:
case INST_DICT_LAPPEND:
opnd = TclGetUInt4AtPtr(pc+1);
cleanup = 2;
varPtr = &(compiledLocals[opnd]);
part1 = varPtr->name;
while (TclIsVarLink(varPtr)) {
varPtr = varPtr->value.linkPtr;
}
TRACE(("%u => ", opnd));
if (TclIsVarDirectReadable(varPtr)) {
dictPtr = varPtr->value.objPtr;
} else {
DECACHE_STACK_INFO();
dictPtr = TclPtrGetVar(interp, varPtr, NULL, part1, NULL, 0);
CACHE_STACK_INFO();
}
if (dictPtr == NULL) {
TclNewObj(dictPtr);
allocateDict = 1;
} else {
allocateDict = Tcl_IsShared(dictPtr);
if (allocateDict) {
dictPtr = Tcl_DuplicateObj(dictPtr);
}
}
result = Tcl_DictObjGet(interp, dictPtr, *(tosPtr - 1), &valPtr);
if (result != TCL_OK) {
if (allocateDict) {
Tcl_DecrRefCount(dictPtr);
}
goto checkForCatch;
}
/*
* Note that a non-existent key results in a NULL valPtr, which is a
* case handled separately below. What we *can* say at this point is
* that the write-back will always succeed.
*/
switch (*pc) {
case INST_DICT_APPEND:
if (valPtr == NULL) {
valPtr = *tosPtr;
} else {
if (Tcl_IsShared(valPtr)) {
valPtr = Tcl_DuplicateObj(valPtr);
}
Tcl_AppendObjToObj(valPtr, *tosPtr);
}
break;
case INST_DICT_LAPPEND:
/*
* More complex because list-append can fail.
*/
if (valPtr == NULL) {
valPtr = Tcl_NewListObj(1, tosPtr);
} else if (Tcl_IsShared(valPtr)) {
valPtr = Tcl_DuplicateObj(valPtr);
result = Tcl_ListObjAppendElement(interp, valPtr, *tosPtr);
if (result != TCL_OK) {
Tcl_DecrRefCount(valPtr);
if (allocateDict) {
Tcl_DecrRefCount(dictPtr);
}
goto checkForCatch;
}
} else {
result = Tcl_ListObjAppendElement(interp, valPtr, *tosPtr);
if (result != TCL_OK) {
if (allocateDict) {
Tcl_DecrRefCount(dictPtr);
}
goto checkForCatch;
}
}
break;
default:
Tcl_Panic("Should not happen!");
}
Tcl_DictObjPut(NULL, dictPtr, *(tosPtr - 1), valPtr);
if (TclIsVarDirectWritable(varPtr)) {
if (allocateDict) {
Tcl_Obj *oldValuePtr = varPtr->value.objPtr;
Tcl_IncrRefCount(dictPtr);
if (oldValuePtr != NULL) {
Tcl_DecrRefCount(oldValuePtr);
} else {
TclSetVarScalar(varPtr);
TclClearVarUndefined(varPtr);
}
varPtr->value.objPtr = dictPtr;
}
objResultPtr = dictPtr;
} else {
Tcl_IncrRefCount(dictPtr);
DECACHE_STACK_INFO();
objResultPtr = TclPtrSetVar(interp, varPtr, NULL, part1, NULL,
dictPtr, TCL_LEAVE_ERR_MSG);
CACHE_STACK_INFO();
Tcl_DecrRefCount(dictPtr);
if (objResultPtr == NULL) {
TRACE_APPEND(("ERROR: %.30s\n",O2S(Tcl_GetObjResult(interp))));
result = TCL_ERROR;
goto checkForCatch;
}
}
#ifndef TCL_COMPILE_DEBUG
if (*(pc+5) == INST_POP) {
NEXT_INST_F(6, 2, 0);
}
#endif
TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
NEXT_INST_F(5, 2, 1);
}
{
int opnd, done;
Tcl_Obj *statePtr, *dictPtr, *keyPtr, *valuePtr, *emptyPtr;
Var *varPtr;
Tcl_DictSearch *searchPtr;
case INST_DICT_FIRST:
opnd = TclGetUInt4AtPtr(pc+1);
TRACE(("%u => ", opnd));
dictPtr = POP_OBJECT();
searchPtr = (Tcl_DictSearch *) ckalloc(sizeof(Tcl_DictSearch));
result = Tcl_DictObjFirst(interp, dictPtr, searchPtr, &keyPtr,
&valuePtr, &done);
if (result != TCL_OK) {
ckfree((char *) searchPtr);
cleanup = 0;
goto checkForCatch;
}
TclNewObj(statePtr);
statePtr->typePtr = &dictIteratorType;
statePtr->internalRep.twoPtrValue.ptr1 = (void *) searchPtr;
statePtr->internalRep.twoPtrValue.ptr2 = (void *) dictPtr;
varPtr = compiledLocals + opnd;
if (varPtr->value.objPtr == NULL) {
TclSetVarScalar(compiledLocals + opnd);
TclClearVarUndefined(compiledLocals + opnd);
} else if (varPtr->value.objPtr->typePtr == &dictIteratorType) {
Tcl_Panic("mis-issued dictFirst!");
} else {
Tcl_DecrRefCount(varPtr->value.objPtr);
}
varPtr->value.objPtr = statePtr;
Tcl_IncrRefCount(statePtr);
goto pushDictIteratorResult;
case INST_DICT_NEXT:
opnd = TclGetUInt4AtPtr(pc+1);
TRACE(("%u => ", opnd));
statePtr = compiledLocals[opnd].value.objPtr;
if (statePtr == NULL || statePtr->typePtr != &dictIteratorType) {
Tcl_Panic("mis-issued dictNext!");
}
searchPtr = (Tcl_DictSearch *) statePtr->internalRep.twoPtrValue.ptr1;
Tcl_DictObjNext(searchPtr, &keyPtr, &valuePtr, &done);
pushDictIteratorResult:
if (done) {
TclNewObj(emptyPtr);
PUSH_OBJECT(emptyPtr);
PUSH_OBJECT(emptyPtr);
} else {
PUSH_OBJECT(valuePtr);
PUSH_OBJECT(keyPtr);
}
TRACE_APPEND(("\"%.30s\" \"%.30s\" %d",
O2S(*(tosPtr-1)), O2S(*tosPtr), done));
objResultPtr = eePtr->constants[done];
/* TODO: consider opt like INST_FOREACH_STEP4 */
NEXT_INST_F(5, 0, 1);
case INST_DICT_DONE:
opnd = TclGetUInt4AtPtr(pc+1);
TRACE(("%u => ", opnd));
statePtr = compiledLocals[opnd].value.objPtr;
if (statePtr == NULL) {
Tcl_Panic("mis-issued dictDone!");
}
if (statePtr->typePtr == &dictIteratorType) {
/*
* First kill the search, and then release the reference to the
* dictionary that we were holding.
*/
searchPtr = (Tcl_DictSearch *)
statePtr->internalRep.twoPtrValue.ptr1;
Tcl_DictObjDone(searchPtr);
ckfree((char *) searchPtr);
dictPtr = (Tcl_Obj *) statePtr->internalRep.twoPtrValue.ptr2;
Tcl_DecrRefCount(dictPtr);
/*
* Set the internal variable to an empty object to signify that we
* don't hold an iterator.
*/
Tcl_DecrRefCount(statePtr);
TclNewObj(emptyPtr);
compiledLocals[opnd].value.objPtr = emptyPtr;
Tcl_IncrRefCount(emptyPtr);
}
NEXT_INST_F(5, 0, 0);
}
{
int opnd, opnd2, i, length, allocdict;
Tcl_Obj **keyPtrPtr, *dictPtr;
DictUpdateInfo *duiPtr;
Var *varPtr;
char *part1;
case INST_DICT_UPDATE_START:
opnd = TclGetUInt4AtPtr(pc+1);
opnd2 = TclGetUInt4AtPtr(pc+5);
varPtr = &(compiledLocals[opnd]);
duiPtr = codePtr->auxDataArrayPtr[opnd2].clientData;
part1 = varPtr->name;
while (TclIsVarLink(varPtr)) {
varPtr = varPtr->value.linkPtr;
}
TRACE(("%u => ", opnd));
if (TclIsVarDirectReadable(varPtr)) {
dictPtr = varPtr->value.objPtr;
} else {
DECACHE_STACK_INFO();
dictPtr = TclPtrGetVar(interp, varPtr, NULL, part1, NULL,
TCL_LEAVE_ERR_MSG);
CACHE_STACK_INFO();
if (dictPtr == NULL) {
goto dictUpdateStartFailed;
}
}
if (Tcl_ListObjGetElements(interp, *tosPtr, &length,
&keyPtrPtr) != TCL_OK) {
goto dictUpdateStartFailed;
}
if (length != duiPtr->length) {
Tcl_Panic("dictUpdateStart argument length mismatch");
}
for (i=0 ; i<length ; i++) {
Tcl_Obj *valPtr;
if (Tcl_DictObjGet(interp, dictPtr, keyPtrPtr[i],
&valPtr) != TCL_OK) {
goto dictUpdateStartFailed;
}
varPtr = &(compiledLocals[duiPtr->varIndices[i]]);
part1 = varPtr->name;
while (TclIsVarLink(varPtr)) {
varPtr = varPtr->value.linkPtr;
}
DECACHE_STACK_INFO();
if (valPtr == NULL) {
Tcl_UnsetVar(interp, part1, 0);
} else if (TclPtrSetVar(interp, varPtr, NULL, part1, NULL,
valPtr, TCL_LEAVE_ERR_MSG) == NULL) {
CACHE_STACK_INFO();
dictUpdateStartFailed:
cleanup = 1;
result = TCL_ERROR;
goto checkForCatch;
}
CACHE_STACK_INFO();
}
NEXT_INST_F(9, 1, 0);
case INST_DICT_UPDATE_END:
opnd = TclGetUInt4AtPtr(pc+1);
opnd2 = TclGetUInt4AtPtr(pc+5);
varPtr = &(compiledLocals[opnd]);
duiPtr = codePtr->auxDataArrayPtr[opnd2].clientData;
part1 = varPtr->name;
while (TclIsVarLink(varPtr)) {
varPtr = varPtr->value.linkPtr;
}
TRACE(("%u => ", opnd));
if (TclIsVarDirectReadable(varPtr)) {
dictPtr = varPtr->value.objPtr;
} else {
DECACHE_STACK_INFO();
dictPtr = TclPtrGetVar(interp, varPtr, NULL, part1, NULL, 0);
CACHE_STACK_INFO();
}
if (dictPtr == NULL) {
NEXT_INST_F(9, 1, 0);
}
if (Tcl_DictObjSize(interp, dictPtr, &length) != TCL_OK
|| Tcl_ListObjGetElements(interp, *tosPtr, &length,
&keyPtrPtr) != TCL_OK) {
cleanup = 1;
result = TCL_ERROR;
goto checkForCatch;
}
allocdict = Tcl_IsShared(dictPtr);
if (allocdict) {
dictPtr = Tcl_DuplicateObj(dictPtr);
}
for (i=0 ; i<length ; i++) {
Tcl_Obj *valPtr;
Var *var2Ptr;
char *part1a;
var2Ptr = &(compiledLocals[duiPtr->varIndices[i]]);
part1a = var2Ptr->name;
while (TclIsVarLink(var2Ptr)) {
var2Ptr = var2Ptr->value.linkPtr;
}
if (TclIsVarDirectReadable(var2Ptr)) {
valPtr = var2Ptr->value.objPtr;
} else {
DECACHE_STACK_INFO();
valPtr = TclPtrGetVar(interp, var2Ptr, NULL, part1a, NULL, 0);
CACHE_STACK_INFO();
}
if (valPtr == NULL) {
Tcl_DictObjRemove(interp, dictPtr, keyPtrPtr[i]);
} else {
Tcl_DictObjPut(interp, dictPtr, keyPtrPtr[i], valPtr);
}
}
if (TclIsVarDirectWritable(varPtr)) {
Tcl_IncrRefCount(dictPtr);
Tcl_DecrRefCount(varPtr->value.objPtr);
varPtr->value.objPtr = dictPtr;
} else {
DECACHE_STACK_INFO();
objResultPtr = TclPtrSetVar(interp, varPtr, NULL, part1, NULL,
dictPtr, TCL_LEAVE_ERR_MSG);
CACHE_STACK_INFO();
if (objResultPtr == NULL) {
if (allocdict) {
Tcl_DecrRefCount(dictPtr);
}
cleanup = 2;
result = TCL_ERROR;
goto checkForCatch;
}
}
NEXT_INST_F(9, 1, 0);
}
default:
Tcl_Panic("TclExecuteByteCode: unrecognized opCode %u", *pc);
} /* end of switch on opCode */
/*
* Division by zero in an expression. Control only reaches this point by
* "goto divideByZero".
*/
divideByZero:
Tcl_SetObjResult(interp, Tcl_NewStringObj("divide by zero", -1));
Tcl_SetErrorCode(interp, "ARITH", "DIVZERO", "divide by zero",
(char *) NULL);
result = TCL_ERROR;
goto checkForCatch;
/*
* Exponentiation of zero by negative number in an expression. Control
* only reaches this point by "goto exponOfZero".
*/
exponOfZero:
Tcl_SetObjResult(interp, Tcl_NewStringObj(
"exponentiation of zero by negative power", -1));
Tcl_SetErrorCode(interp, "ARITH", "DOMAIN",
"exponentiation of zero by negative power", (char *) NULL);
result = TCL_ERROR;
goto checkForCatch;
/*
* Block for variables needed to process exception returns
*/
{
ExceptionRange *rangePtr;
/* Points to closest loop or catch exception
* range enclosing the pc. Used by various
* instructions and processCatch to process
* break, continue, and errors. */
Tcl_Obj *valuePtr;
const char *bytes;
int length;
#if TCL_COMPILE_DEBUG
int opnd;
#endif
/*
* An external evaluation (INST_INVOKE or INST_EVAL) returned
* something different from TCL_OK, or else INST_BREAK or
* INST_CONTINUE were called.
*/
processExceptionReturn:
#if TCL_COMPILE_DEBUG
switch (*pc) {
case INST_INVOKE_STK1:
opnd = TclGetUInt1AtPtr(pc+1);
TRACE(("%u => ... after \"%.20s\": ", opnd, cmdNameBuf));
break;
case INST_INVOKE_STK4:
opnd = TclGetUInt4AtPtr(pc+1);
TRACE(("%u => ... after \"%.20s\": ", opnd, cmdNameBuf));
break;
case INST_EVAL_STK:
/*
* Note that the object at stacktop has to be used before doing
* the cleanup.
*/
TRACE(("\"%.30s\" => ", O2S(*tosPtr)));
break;
default:
TRACE(("=> "));
}
#endif
if ((result == TCL_CONTINUE) || (result == TCL_BREAK)) {
rangePtr = GetExceptRangeForPc(pc, /*catchOnly*/ 0, codePtr);
if (rangePtr == NULL) {
TRACE_APPEND(("no encl. loop or catch, returning %s\n",
StringForResultCode(result)));
goto abnormalReturn;
}
if (rangePtr->type == CATCH_EXCEPTION_RANGE) {
TRACE_APPEND(("%s ...\n", StringForResultCode(result)));
goto processCatch;
}
while (cleanup--) {
valuePtr = POP_OBJECT();
TclDecrRefCount(valuePtr);
}
if (result == TCL_BREAK) {
result = TCL_OK;
pc = (codePtr->codeStart + rangePtr->breakOffset);
TRACE_APPEND(("%s, range at %d, new pc %d\n",
StringForResultCode(result),
rangePtr->codeOffset, rangePtr->breakOffset));
NEXT_INST_F(0, 0, 0);
} else {
if (rangePtr->continueOffset == -1) {
TRACE_APPEND(("%s, loop w/o continue, checking for catch\n",
StringForResultCode(result)));
goto checkForCatch;
}
result = TCL_OK;
pc = (codePtr->codeStart + rangePtr->continueOffset);
TRACE_APPEND(("%s, range at %d, new pc %d\n",
StringForResultCode(result),
rangePtr->codeOffset, rangePtr->continueOffset));
NEXT_INST_F(0, 0, 0);
}
#if TCL_COMPILE_DEBUG
} else if (traceInstructions) {
if ((result != TCL_ERROR) && (result != TCL_RETURN)) {
Tcl_Obj *objPtr = Tcl_GetObjResult(interp);
TRACE_APPEND(("OTHER RETURN CODE %d, result= \"%s\"\n ",
result, O2S(objPtr)));
} else {
Tcl_Obj *objPtr = Tcl_GetObjResult(interp);
TRACE_APPEND(("%s, result= \"%s\"\n",
StringForResultCode(result), O2S(objPtr)));
}
#endif
}
/*
* 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)) {
bytes = GetSrcInfoForPc(pc, codePtr, &length);
if (bytes != NULL) {
Tcl_LogCommandInfo(interp, codePtr->source, bytes, length);
}
}
iPtr->flags &= ~ERR_ALREADY_LOGGED;
/*
* Clear all expansions that may have started after the last
* INST_BEGIN_CATCH.
*/
while ((expandNestList != NULL) && ((catchTop == initCatchTop) ||
((ptrdiff_t) eePtr->stackPtr[catchTop] <=
(ptrdiff_t) expandNestList->internalRep.twoPtrValue.ptr1))) {
Tcl_Obj *objPtr = expandNestList->internalRep.twoPtrValue.ptr2;
TclDecrRefCount(expandNestList);
expandNestList = objPtr;
}
/*
* We must not catch an exceeded limit. Instead, it blows outwards
* until we either hit another interpreter (presumably where the limit
* is not exceeded) or we get to the top-level.
*/
if (Tcl_LimitExceeded(interp)) {
#ifdef TCL_COMPILE_DEBUG
if (traceInstructions) {
fprintf(stdout, " ... limit exceeded, returning %s\n",
StringForResultCode(result));
}
#endif
goto abnormalReturn;
}
if (catchTop == initCatchTop) {
#ifdef TCL_COMPILE_DEBUG
if (traceInstructions) {
fprintf(stdout, " ... no enclosing catch, returning %s\n",
StringForResultCode(result));
}
#endif
goto abnormalReturn;
}
rangePtr = GetExceptRangeForPc(pc, /*catchOnly*/ 1, codePtr);
if (rangePtr == NULL) {
/*
* This is only possible when compiling a [catch] that sends its
* script to INST_EVAL. Cannot correct the compiler without
* breakingcompat with previous .tbc compiled scripts.
*/
#ifdef TCL_COMPILE_DEBUG
if (traceInstructions) {
fprintf(stdout, " ... no enclosing catch, returning %s\n",
StringForResultCode(result));
}
#endif
goto abnormalReturn;
}
/*
* A catch exception range (rangePtr) was found to handle an
* "exception". It was found either by checkForCatch just above or by
* an instruction during break, continue, or error processing. Jump to
* its catchOffset after unwinding the operand stack to the depth it
* had when starting to execute the range's catch command.
*/
processCatch:
while (tosPtr > ((ptrdiff_t) (eePtr->stackPtr[catchTop])) + eePtr->stackPtr) {
valuePtr = POP_OBJECT();
TclDecrRefCount(valuePtr);
}
#ifdef TCL_COMPILE_DEBUG
if (traceInstructions) {
fprintf(stdout, " ... found catch at %d, catchTop=%d, unwound to %d, new pc %u\n",
rangePtr->codeOffset, (catchTop - initCatchTop - 1),
(int) eePtr->stackPtr[catchTop],
(unsigned int)(rangePtr->catchOffset));
}
#endif
pc = (codePtr->codeStart + rangePtr->catchOffset);
NEXT_INST_F(0, 0, 0); /* restart the execution loop at pc */
/*
* end of infinite loop dispatching on instructions.
*/
/*
* Abnormal return code. Restore the stack to state it had when
* starting to execute the ByteCode. Panic if the stack is below the
* initial level.
*/
abnormalReturn:
{
Tcl_Obj **initTosPtr = eePtr->stackPtr + initStackTop;
while (tosPtr > initTosPtr) {
Tcl_Obj *objPtr = POP_OBJECT();
TclDecrRefCount(objPtr);
}
/*
* Clear all expansions.
*/
while (expandNestList) {
Tcl_Obj *objPtr = expandNestList->internalRep.twoPtrValue.ptr2;
TclDecrRefCount(expandNestList);
expandNestList = objPtr;
}
if (tosPtr < initTosPtr) {
fprintf(stderr, "\nTclExecuteByteCode: abnormal return at pc %u: stack top %d < entry stack top %d\n",
(unsigned int)(pc - codePtr->codeStart),
(unsigned int) (tosPtr - eePtr->stackPtr),
(unsigned int) initStackTop);
Tcl_Panic("TclExecuteByteCode execution failure: end stack top < start stack top");
}
eePtr->tosPtr = initTosPtr - codePtr->maxExceptDepth;
}
}
return result;
#undef iPtr
}
#ifdef TCL_COMPILE_DEBUG
/*
*----------------------------------------------------------------------
*
* 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(
register ByteCode *codePtr) /* The bytecode whose summary is printed to
* stdout. */
{
Proc *procPtr = codePtr->procPtr;
Interp *iPtr = (Interp *) *codePtr->interpHandle;
fprintf(stdout, "\nExecuting ByteCode 0x%x, refCt %u, epoch %u, interp 0x%x (epoch %u)\n",
(unsigned int) codePtr, codePtr->refCount,
codePtr->compileEpoch, (unsigned int) iPtr,
iPtr->compileEpoch);
fprintf(stdout, " Source: ");
TclPrintSource(stdout, codePtr->source, 60);
fprintf(stdout, "\n Cmds %d, src %d, inst %u, litObjs %u, aux %d, stkDepth %u, code/src %.2f\n",
codePtr->numCommands, codePtr->numSrcBytes,
codePtr->numCodeBytes, codePtr->numLitObjects,
codePtr->numAuxDataItems, codePtr->maxStackDepth,
#ifdef TCL_COMPILE_STATS
codePtr->numSrcBytes?
((float)codePtr->structureSize)/codePtr->numSrcBytes :
#endif
0.0);
#ifdef TCL_COMPILE_STATS
fprintf(stdout, " Code %lu = header %lu+inst %d+litObj %lu+exc %lu+aux %lu+cmdMap %d\n",
(unsigned long) codePtr->structureSize,
(unsigned long) (sizeof(ByteCode) - (sizeof(size_t) + sizeof(Tcl_Time))),
codePtr->numCodeBytes,
(unsigned long) (codePtr->numLitObjects * sizeof(Tcl_Obj *)),
(unsigned long) (codePtr->numExceptRanges * sizeof(ExceptionRange)),
(unsigned long) (codePtr->numAuxDataItems * sizeof(AuxData)),
codePtr->numCmdLocBytes);
#endif /* TCL_COMPILE_STATS */
if (procPtr != NULL) {
fprintf(stdout,
" Proc 0x%x, refCt %d, args %d, compiled locals %d\n",
(unsigned int) procPtr, procPtr->refCount,
procPtr->numArgs, procPtr->numCompiledLocals);
}
}
#endif /* TCL_COMPILE_DEBUG */
/*
*----------------------------------------------------------------------
*
* 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(
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 checkStack) /* 0 if the stack depth check should be
* skipped. */
{
int stackUpperBound = stackLowerBound + codePtr->maxStackDepth;
/* 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);
Tcl_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);
Tcl_Panic("TclExecuteByteCode execution failure: bad opcode");
}
if (checkStack &&
((stackTop < stackLowerBound) || (stackTop > stackUpperBound))) {
int numChars;
const char *cmd = GetSrcInfoForPc(pc, codePtr, &numChars);
fprintf(stderr, "\nBad stack top %d at pc %u in TclExecuteByteCode (min %i, max %i)",
stackTop, relativePc, stackLowerBound, stackUpperBound);
if (cmd != NULL) {
Tcl_Obj *message = Tcl_NewStringObj("\n executing ", -1);
Tcl_IncrRefCount(message);
Tcl_AppendLimitedToObj(message, cmd, numChars, 100, NULL);
fprintf(stderr,"%s\n", Tcl_GetString(message));
Tcl_DecrRefCount(message);
} else {
fprintf(stderr, "\n");
}
Tcl_Panic("TclExecuteByteCode execution failure: bad stack top");
}
}
#endif /* TCL_COMPILE_DEBUG */
/*
*----------------------------------------------------------------------
*
* IllegalExprOperandType --
*
* Used by TclExecuteByteCode to append an error message to the interp
* result when an illegal operand type is detected by an expression
* instruction. The argument opndPtr holds the operand object in error.
*
* Results:
* None.
*
* Side effects:
* An error message is appended to the interp result.
*
*----------------------------------------------------------------------
*/
static void
IllegalExprOperandType(
Tcl_Interp *interp, /* Interpreter to which error information
* pertains. */
unsigned char *pc, /* Points to the instruction being executed
* when the illegal type was found. */
Tcl_Obj *opndPtr) /* Points to the operand holding the value
* with the illegal type. */
{
ClientData ptr;
int type;
unsigned char opcode = *pc;
const char *description, *operator = operatorStrings[opcode - INST_LOR];
if (opcode == INST_EXPON) {
operator = "**";
}
if (GetNumberFromObj(NULL, opndPtr, &ptr, &type) != TCL_OK) {
int numBytes;
const char *bytes = Tcl_GetStringFromObj(opndPtr, &numBytes);
if (numBytes == 0) {
description = "empty string";
} else if (TclCheckBadOctal(NULL, bytes)) {
description = "invalid octal number";
} else {
description = "non-numeric string";
}
} else if (type == TCL_NUMBER_NAN) {
description = "non-numeric floating-point value";
} else if (type == TCL_NUMBER_DOUBLE) {
description = "floating-point value";
} else {
/* TODO: No caller needs this. Eliminate? */
description = "(big) integer";
}
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"can't use %s as operand of \"%s\"", description, operator));
}
/*
*----------------------------------------------------------------------
*
* TclGetSrcInfoForPc, 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.
*
*----------------------------------------------------------------------
*/
void
TclGetSrcInfoForPc (cfPtr)
CmdFrame *cfPtr;
{
ByteCode *codePtr = (ByteCode *) cfPtr->data.tebc.codePtr;
if (cfPtr->cmd.str.cmd == NULL) {
cfPtr->cmd.str.cmd = GetSrcInfoForPc(
(unsigned char *) cfPtr->data.tebc.pc, codePtr,
&cfPtr->cmd.str.len);
}
if (cfPtr->cmd.str.cmd != NULL) {
/*
* We now have the command. We can get the srcOffset back and from
* there find the list of word locations for this command.
*/
ExtCmdLoc *eclPtr;
ECL *locPtr = NULL;
int srcOffset, i;
Interp *iPtr = (Interp *) *codePtr->interpHandle;
Tcl_HashEntry *hePtr =
Tcl_FindHashEntry(iPtr->lineBCPtr, (char *) codePtr);
if (!hePtr) {
return;
}
srcOffset = cfPtr->cmd.str.cmd - codePtr->source;
eclPtr = (ExtCmdLoc *) Tcl_GetHashValue (hePtr);
for (i=0; i < eclPtr->nuloc; i++) {
if (eclPtr->loc[i].srcOffset == srcOffset) {
locPtr = eclPtr->loc+i;
break;
}
}
if (locPtr == NULL) {
Tcl_Panic("LocSearch failure");
}
cfPtr->line = locPtr->line;
cfPtr->nline = locPtr->nline;
cfPtr->type = eclPtr->type;
if (eclPtr->type == TCL_LOCATION_SOURCE) {
cfPtr->data.eval.path = eclPtr->path;
Tcl_IncrRefCount(cfPtr->data.eval.path);
}
/*
* Do not set cfPtr->data.eval.path NULL for non-SOURCE. Needed for
* cfPtr->data.tebc.codePtr.
*/
}
}
static const char *
GetSrcInfoForPc(
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;
}
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);
}
/*
*----------------------------------------------------------------------
*
* GetExceptRangeForPc --
*
* Given a program counter value, return the closest enclosing
* ExceptionRange.
*
* 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, 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.
*
*----------------------------------------------------------------------
*/
static ExceptionRange *
GetExceptRangeForPc(
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. If nonzero
* 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;
int numRanges = codePtr->numExceptRanges;
register ExceptionRange *rangePtr;
int pcOffset = (pc - codePtr->codeStart);
register int start;
if (numRanges == 0) {
return NULL;
}
/*
* This exploits peculiarities of our compiler: nested ranges are always
* *after* their containing ranges, so that by scanning backwards we are
* sure that the first matching range is indeed the deepest.
*/
rangeArrayPtr = codePtr->exceptArrayPtr;
rangePtr = rangeArrayPtr + numRanges;
while (--rangePtr >= rangeArrayPtr) {
start = rangePtr->codeOffset;
if ((start <= pcOffset) &&
(pcOffset < (start + rangePtr->numCodeBytes))) {
if ((!catchOnly)
|| (rangePtr->type == CATCH_EXCEPTION_RANGE)) {
return rangePtr;
}
}
}
return NULL;
}
/*
*----------------------------------------------------------------------
*
* GetOpcodeName --
*
* This procedure is called by the TRACE and TRACE_WITH_OBJ macros used
* in TclExecuteByteCode when debugging. It returns the name of the
* bytecode instruction at a specified instruction pc.
*
* Results:
* A character string for the instruction.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
#ifdef TCL_COMPILE_DEBUG
static char *
GetOpcodeName(
unsigned char *pc) /* Points to the instruction whose name should
* be returned. */
{
unsigned char opCode = *pc;
return tclInstructionTable[opCode].name;
}
#endif /* TCL_COMPILE_DEBUG */
/*
*----------------------------------------------------------------------
*
* TclExprFloatError --
*
* This procedure is called when an error occurs during a floating-point
* operation. It reads errno and sets interp->objResultPtr accordingly.
*
* Results:
* interp->objResultPtr is set to hold an error message.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
void
TclExprFloatError(
Tcl_Interp *interp, /* Where to store error message. */
double value) /* Value returned after error; used to
* distinguish underflows from overflows. */
{
const char *s;
if ((errno == EDOM) || TclIsNaN(value)) {
s = "domain error: argument not in valid range";
Tcl_SetObjResult(interp, Tcl_NewStringObj(s, -1));
Tcl_SetErrorCode(interp, "ARITH", "DOMAIN", s, (char *) NULL);
} else if ((errno == ERANGE) || TclIsInfinite(value)) {
if (value == 0.0) {
s = "floating-point value too small to represent";
Tcl_SetObjResult(interp, Tcl_NewStringObj(s, -1));
Tcl_SetErrorCode(interp, "ARITH", "UNDERFLOW", s, (char *) NULL);
} else {
s = "floating-point value too large to represent";
Tcl_SetObjResult(interp, Tcl_NewStringObj(s, -1));
Tcl_SetErrorCode(interp, "ARITH", "OVERFLOW", s, (char *) NULL);
}
} else {
Tcl_Obj *objPtr = Tcl_ObjPrintf(
"unknown floating-point error, errno = %d", errno);
Tcl_SetErrorCode(interp, "ARITH", "UNKNOWN",
Tcl_GetString(objPtr), (char *) NULL);
Tcl_SetObjResult(interp, objPtr);
}
}
#ifdef TCL_COMPILE_STATS
/*
*----------------------------------------------------------------------
*
* TclLog2 --
*
* Procedure used while collecting compilation statistics to determine
* the log base 2 of an integer.
*
* Results:
* Returns the log base 2 of the operand. If the argument is less than or
* equal to zero, a zero is returned.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
int
TclLog2(
register int value) /* The integer for which to compute the log
* base 2. */
{
register int n = value;
register int result = 0;
while (n > 1) {
n = n >> 1;
result++;
}
return result;
}
/*
*----------------------------------------------------------------------
*
* EvalStatsCmd --
*
* Implements the "evalstats" command that prints instruction execution
* counts to stdout.
*
* Results:
* Standard Tcl results.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
EvalStatsCmd(
ClientData unused, /* Unused. */
Tcl_Interp *interp, /* The current interpreter. */
int objc, /* The number of arguments. */
Tcl_Obj *const objv[]) /* The argument strings. */
{
Interp *iPtr = (Interp *) interp;
LiteralTable *globalTablePtr = &iPtr->literalTable;
ByteCodeStats *statsPtr = &iPtr->stats;
double totalCodeBytes, currentCodeBytes;
double totalLiteralBytes, currentLiteralBytes;
double objBytesIfUnshared, strBytesIfUnshared, sharingBytesSaved;
double strBytesSharedMultX, strBytesSharedOnce;
double numInstructions, currentHeaderBytes;
long numCurrentByteCodes, numByteCodeLits;
long refCountSum, literalMgmtBytes, sum;
int numSharedMultX, numSharedOnce;
int decadeHigh, minSizeDecade, maxSizeDecade, length, i;
char *litTableStats;
LiteralEntry *entryPtr;
numInstructions = 0.0;
for (i = 0; i < 256; i++) {
if (statsPtr->instructionCount[i] != 0) {
numInstructions += statsPtr->instructionCount[i];
}
}
totalLiteralBytes = sizeof(LiteralTable)
+ iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)
+ (statsPtr->numLiteralsCreated * sizeof(LiteralEntry))
+ (statsPtr->numLiteralsCreated * sizeof(Tcl_Obj))
+ statsPtr->totalLitStringBytes;
totalCodeBytes = statsPtr->totalByteCodeBytes + totalLiteralBytes;
numCurrentByteCodes =
statsPtr->numCompilations - statsPtr->numByteCodesFreed;
currentHeaderBytes = numCurrentByteCodes
* (sizeof(ByteCode) - (sizeof(size_t) + sizeof(Tcl_Time)));
literalMgmtBytes = sizeof(LiteralTable)
+ (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *))
+ (iPtr->literalTable.numEntries * sizeof(LiteralEntry));
currentLiteralBytes = literalMgmtBytes
+ iPtr->literalTable.numEntries * sizeof(Tcl_Obj)
+ statsPtr->currentLitStringBytes;
currentCodeBytes = statsPtr->currentByteCodeBytes + currentLiteralBytes;
/*
* Summary statistics, total and current source and ByteCode sizes.
*/
fprintf(stdout, "\n----------------------------------------------------------------\n");
fprintf(stdout,
"Compilation and execution statistics for interpreter 0x%x\n",
(unsigned int) iPtr);
fprintf(stdout, "\nNumber ByteCodes executed %ld\n",
statsPtr->numExecutions);
fprintf(stdout, "Number ByteCodes compiled %ld\n",
statsPtr->numCompilations);
fprintf(stdout, " Mean executions/compile %.1f\n",
((float)statsPtr->numExecutions) / statsPtr->numCompilations);
fprintf(stdout, "\nInstructions executed %.0f\n",
numInstructions);
fprintf(stdout, " Mean inst/compile %.0f\n",
numInstructions / statsPtr->numCompilations);
fprintf(stdout, " Mean inst/execution %.0f\n",
numInstructions / statsPtr->numExecutions);
fprintf(stdout, "\nTotal ByteCodes %ld\n",
statsPtr->numCompilations);
fprintf(stdout, " Source bytes %.6g\n",
statsPtr->totalSrcBytes);
fprintf(stdout, " Code bytes %.6g\n",
totalCodeBytes);
fprintf(stdout, " ByteCode bytes %.6g\n",
statsPtr->totalByteCodeBytes);
fprintf(stdout, " Literal bytes %.6g\n",
totalLiteralBytes);
fprintf(stdout, " table %lu + bkts %lu + entries %lu + objects %lu + strings %.6g\n",
(unsigned long) sizeof(LiteralTable),
(unsigned long) (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)),
(unsigned long) (statsPtr->numLiteralsCreated * sizeof(LiteralEntry)),
(unsigned long) (statsPtr->numLiteralsCreated * sizeof(Tcl_Obj)),
statsPtr->totalLitStringBytes);
fprintf(stdout, " Mean code/compile %.1f\n",
totalCodeBytes / statsPtr->numCompilations);
fprintf(stdout, " Mean code/source %.1f\n",
totalCodeBytes / statsPtr->totalSrcBytes);
fprintf(stdout, "\nCurrent (active) ByteCodes %ld\n",
numCurrentByteCodes);
fprintf(stdout, " Source bytes %.6g\n",
statsPtr->currentSrcBytes);
fprintf(stdout, " Code bytes %.6g\n",
currentCodeBytes);
fprintf(stdout, " ByteCode bytes %.6g\n",
statsPtr->currentByteCodeBytes);
fprintf(stdout, " Literal bytes %.6g\n",
currentLiteralBytes);
fprintf(stdout, " table %lu + bkts %lu + entries %lu + objects %lu + strings %.6g\n",
(unsigned long) sizeof(LiteralTable),
(unsigned long) (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)),
(unsigned long) (iPtr->literalTable.numEntries * sizeof(LiteralEntry)),
(unsigned long) (iPtr->literalTable.numEntries * sizeof(Tcl_Obj)),
statsPtr->currentLitStringBytes);
fprintf(stdout, " Mean code/source %.1f\n",
currentCodeBytes / statsPtr->currentSrcBytes);
fprintf(stdout, " Code + source bytes %.6g (%0.1f mean code/src)\n",
(currentCodeBytes + statsPtr->currentSrcBytes),
(currentCodeBytes / statsPtr->currentSrcBytes) + 1.0);
/*
* Tcl_IsShared statistics check
*
* This gives the refcount of each obj as Tcl_IsShared was called for it.
* Shared objects must be duplicated before they can be modified.
*/
numSharedMultX = 0;
fprintf(stdout, "\nTcl_IsShared object check (all objects):\n");
fprintf(stdout, " Object had refcount <=1 (not shared) %ld\n",
tclObjsShared[1]);
for (i = 2; i < TCL_MAX_SHARED_OBJ_STATS; i++) {
fprintf(stdout, " refcount ==%d %ld\n",
i, tclObjsShared[i]);
numSharedMultX += tclObjsShared[i];
}
fprintf(stdout, " refcount >=%d %ld\n",
i, tclObjsShared[0]);
numSharedMultX += tclObjsShared[0];
fprintf(stdout, " Total shared objects %d\n",
numSharedMultX);
/*
* Literal table statistics.
*/
numByteCodeLits = 0;
refCountSum = 0;
numSharedMultX = 0;
numSharedOnce = 0;
objBytesIfUnshared = 0.0;
strBytesIfUnshared = 0.0;
strBytesSharedMultX = 0.0;
strBytesSharedOnce = 0.0;
for (i = 0; i < globalTablePtr->numBuckets; i++) {
for (entryPtr = globalTablePtr->buckets[i]; entryPtr != NULL;
entryPtr = entryPtr->nextPtr) {
if (entryPtr->objPtr->typePtr == &tclByteCodeType) {
numByteCodeLits++;
}
(void) Tcl_GetStringFromObj(entryPtr->objPtr, &length);
refCountSum += entryPtr->refCount;
objBytesIfUnshared += (entryPtr->refCount * sizeof(Tcl_Obj));
strBytesIfUnshared += (entryPtr->refCount * (length+1));
if (entryPtr->refCount > 1) {
numSharedMultX++;
strBytesSharedMultX += (length+1);
} else {
numSharedOnce++;
strBytesSharedOnce += (length+1);
}
}
}
sharingBytesSaved = (objBytesIfUnshared + strBytesIfUnshared)
- currentLiteralBytes;
fprintf(stdout, "\nTotal objects (all interps) %ld\n",
tclObjsAlloced);
fprintf(stdout, "Current objects %ld\n",
(tclObjsAlloced - tclObjsFreed));
fprintf(stdout, "Total literal objects %ld\n",
statsPtr->numLiteralsCreated);
fprintf(stdout, "\nCurrent literal objects %d (%0.1f%% of current objects)\n",
globalTablePtr->numEntries,
(globalTablePtr->numEntries * 100.0) / (tclObjsAlloced-tclObjsFreed));
fprintf(stdout, " ByteCode literals %ld (%0.1f%% of current literals)\n",
numByteCodeLits,
(numByteCodeLits * 100.0) / globalTablePtr->numEntries);
fprintf(stdout, " Literals reused > 1x %d\n",
numSharedMultX);
fprintf(stdout, " Mean reference count %.2f\n",
((double) refCountSum) / globalTablePtr->numEntries);
fprintf(stdout, " Mean len, str reused >1x %.2f\n",
(numSharedMultX? (strBytesSharedMultX/numSharedMultX) : 0.0));
fprintf(stdout, " Mean len, str used 1x %.2f\n",
(numSharedOnce? (strBytesSharedOnce/numSharedOnce) : 0.0));
fprintf(stdout, " Total sharing savings %.6g (%0.1f%% of bytes if no sharing)\n",
sharingBytesSaved,
(sharingBytesSaved * 100.0) / (objBytesIfUnshared + strBytesIfUnshared));
fprintf(stdout, " Bytes with sharing %.6g\n",
currentLiteralBytes);
fprintf(stdout, " table %lu + bkts %lu + entries %lu + objects %lu + strings %.6g\n",
(unsigned long) sizeof(LiteralTable),
(unsigned long) (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)),
(unsigned long) (iPtr->literalTable.numEntries * sizeof(LiteralEntry)),
(unsigned long) (iPtr->literalTable.numEntries * sizeof(Tcl_Obj)),
statsPtr->currentLitStringBytes);
fprintf(stdout, " Bytes if no sharing %.6g = objects %.6g + strings %.6g\n",
(objBytesIfUnshared + strBytesIfUnshared),
objBytesIfUnshared, strBytesIfUnshared);
fprintf(stdout, " String sharing savings %.6g = unshared %.6g - shared %.6g\n",
(strBytesIfUnshared - statsPtr->currentLitStringBytes),
strBytesIfUnshared, statsPtr->currentLitStringBytes);
fprintf(stdout, " Literal mgmt overhead %ld (%0.1f%% of bytes with sharing)\n",
literalMgmtBytes,
(literalMgmtBytes * 100.0) / currentLiteralBytes);
fprintf(stdout, " table %lu + buckets %lu + entries %lu\n",
(unsigned long) sizeof(LiteralTable),
(unsigned long) (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)),
(unsigned long) (iPtr->literalTable.numEntries * sizeof(LiteralEntry)));
/*
* Breakdown of current ByteCode space requirements.
*/
fprintf(stdout, "\nBreakdown of current ByteCode requirements:\n");
fprintf(stdout, " Bytes Pct of Avg per\n");
fprintf(stdout, " total ByteCode\n");
fprintf(stdout, "Total %12.6g 100.00%% %8.1f\n",
statsPtr->currentByteCodeBytes,
statsPtr->currentByteCodeBytes / numCurrentByteCodes);
fprintf(stdout, "Header %12.6g %8.1f%% %8.1f\n",
currentHeaderBytes,
(currentHeaderBytes * 100.0) / statsPtr->currentByteCodeBytes,
currentHeaderBytes / numCurrentByteCodes);
fprintf(stdout, "Instructions %12.6g %8.1f%% %8.1f\n",
statsPtr->currentInstBytes,
(statsPtr->currentInstBytes*100.0)/statsPtr->currentByteCodeBytes,
statsPtr->currentInstBytes / numCurrentByteCodes);
fprintf(stdout, "Literal ptr array %12.6g %8.1f%% %8.1f\n",
statsPtr->currentLitBytes,
(statsPtr->currentLitBytes*100.0)/statsPtr->currentByteCodeBytes,
statsPtr->currentLitBytes / numCurrentByteCodes);
fprintf(stdout, "Exception table %12.6g %8.1f%% %8.1f\n",
statsPtr->currentExceptBytes,
(statsPtr->currentExceptBytes*100.0)/statsPtr->currentByteCodeBytes,
statsPtr->currentExceptBytes / numCurrentByteCodes);
fprintf(stdout, "Auxiliary data %12.6g %8.1f%% %8.1f\n",
statsPtr->currentAuxBytes,
(statsPtr->currentAuxBytes*100.0)/statsPtr->currentByteCodeBytes,
statsPtr->currentAuxBytes / numCurrentByteCodes);
fprintf(stdout, "Command map %12.6g %8.1f%% %8.1f\n",
statsPtr->currentCmdMapBytes,
(statsPtr->currentCmdMapBytes*100.0)/statsPtr->currentByteCodeBytes,
statsPtr->currentCmdMapBytes / numCurrentByteCodes);
/*
* Detailed literal statistics.
*/
fprintf(stdout, "\nLiteral string sizes:\n");
fprintf(stdout, " Up to length Percentage\n");
maxSizeDecade = 0;
for (i = 31; i >= 0; i--) {
if (statsPtr->literalCount[i] > 0) {
maxSizeDecade = i;
break;
}
}
sum = 0;
for (i = 0; i <= maxSizeDecade; i++) {
decadeHigh = (1 << (i+1)) - 1;
sum += statsPtr->literalCount[i];
fprintf(stdout, " %10d %8.0f%%\n",
decadeHigh, (sum * 100.0) / statsPtr->numLiteralsCreated);
}
litTableStats = TclLiteralStats(globalTablePtr);
fprintf(stdout, "\nCurrent literal table statistics:\n%s\n",
litTableStats);
ckfree((char *) litTableStats);
/*
* Source and ByteCode size distributions.
*/
fprintf(stdout, "\nSource sizes:\n");
fprintf(stdout, " Up to size Percentage\n");
minSizeDecade = maxSizeDecade = 0;
for (i = 0; i < 31; i++) {
if (statsPtr->srcCount[i] > 0) {
minSizeDecade = i;
break;
}
}
for (i = 31; i >= 0; i--) {
if (statsPtr->srcCount[i] > 0) {
maxSizeDecade = i;
break;
}
}
sum = 0;
for (i = minSizeDecade; i <= maxSizeDecade; i++) {
decadeHigh = (1 << (i+1)) - 1;
sum += statsPtr->srcCount[i];
fprintf(stdout, " %10d %8.0f%%\n",
decadeHigh, (sum * 100.0) / statsPtr->numCompilations);
}
fprintf(stdout, "\nByteCode sizes:\n");
fprintf(stdout, " Up to size Percentage\n");
minSizeDecade = maxSizeDecade = 0;
for (i = 0; i < 31; i++) {
if (statsPtr->byteCodeCount[i] > 0) {
minSizeDecade = i;
break;
}
}
for (i = 31; i >= 0; i--) {
if (statsPtr->byteCodeCount[i] > 0) {
maxSizeDecade = i;
break;
}
}
sum = 0;
for (i = minSizeDecade; i <= maxSizeDecade; i++) {
decadeHigh = (1 << (i+1)) - 1;
sum += statsPtr->byteCodeCount[i];
fprintf(stdout, " %10d %8.0f%%\n",
decadeHigh, (sum * 100.0) / statsPtr->numCompilations);
}
fprintf(stdout, "\nByteCode longevity (excludes Current ByteCodes):\n");
fprintf(stdout, " Up to ms Percentage\n");
minSizeDecade = maxSizeDecade = 0;
for (i = 0; i < 31; i++) {
if (statsPtr->lifetimeCount[i] > 0) {
minSizeDecade = i;
break;
}
}
for (i = 31; i >= 0; i--) {
if (statsPtr->lifetimeCount[i] > 0) {
maxSizeDecade = i;
break;
}
}
sum = 0;
for (i = minSizeDecade; i <= maxSizeDecade; i++) {
decadeHigh = (1 << (i+1)) - 1;
sum += statsPtr->lifetimeCount[i];
fprintf(stdout, " %12.3f %8.0f%%\n",
decadeHigh / 1000.0,
(sum * 100.0) / statsPtr->numByteCodesFreed);
}
/*
* Instruction counts.
*/
fprintf(stdout, "\nInstruction counts:\n");
for (i = 0; i <= LAST_INST_OPCODE; i++) {
if (statsPtr->instructionCount[i]) {
fprintf(stdout, "%20s %8ld %6.1f%%\n",
tclInstructionTable[i].name,
statsPtr->instructionCount[i],
(statsPtr->instructionCount[i]*100.0) / numInstructions);
}
}
fprintf(stdout, "\nInstructions NEVER executed:\n");
for (i = 0; i <= LAST_INST_OPCODE; i++) {
if (statsPtr->instructionCount[i] == 0) {
fprintf(stdout, "%20s\n", tclInstructionTable[i].name);
}
}
#ifdef TCL_MEM_DEBUG
fprintf(stdout, "\nHeap Statistics:\n");
TclDumpMemoryInfo(stdout);
#endif
fprintf(stdout, "\n----------------------------------------------------------------\n");
return TCL_OK;
}
#endif /* TCL_COMPILE_STATS */
#ifdef TCL_COMPILE_DEBUG
/*
*----------------------------------------------------------------------
*
* StringForResultCode --
*
* Procedure that returns a human-readable string representing a Tcl
* result code such as TCL_ERROR.
*
* Results:
* If the result code is one of the standard Tcl return codes, the result
* is a string representing that code such as "TCL_ERROR". Otherwise, the
* result string is that code formatted as a sequence of decimal digit
* characters. Note that the resulting string must not be modified by the
* caller.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static char *
StringForResultCode(
int result) /* The Tcl result code for which to generate a
* string. */
{
static char buf[TCL_INTEGER_SPACE];
if ((result >= TCL_OK) && (result <= TCL_CONTINUE)) {
return resultStrings[result];
}
TclFormatInt(buf, result);
return buf;
}
#endif /* TCL_COMPILE_DEBUG */
/*
* Local Variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* End:
*/