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authorWilliam Joye <wjoye@cfa.harvard.edu>2017-09-22 18:51:12 (GMT)
committerWilliam Joye <wjoye@cfa.harvard.edu>2017-09-22 18:51:12 (GMT)
commit3fa8e6dc88e8041b6cb88d1b1e9c05676d3346b7 (patch)
tree69afbb41089c8358615879f7cd3c4cf7997f4c7e /tcl8.6/generic/tclObj.c
parenta0e17db23c0fd7c771c0afce8cce350c98f90b02 (diff)
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update to tcl/tk 8.6.7
Diffstat (limited to 'tcl8.6/generic/tclObj.c')
-rw-r--r--tcl8.6/generic/tclObj.c4519
1 files changed, 0 insertions, 4519 deletions
diff --git a/tcl8.6/generic/tclObj.c b/tcl8.6/generic/tclObj.c
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index 628c3a7..0000000
--- a/tcl8.6/generic/tclObj.c
+++ /dev/null
@@ -1,4519 +0,0 @@
-/*
- * tclObj.c --
- *
- * This file contains Tcl object-related functions that are used by many
- * Tcl commands.
- *
- * Copyright (c) 1995-1997 Sun Microsystems, Inc.
- * Copyright (c) 1999 by Scriptics Corporation.
- * Copyright (c) 2001 by ActiveState Corporation.
- * Copyright (c) 2005 by Kevin B. Kenny. All rights reserved.
- * Copyright (c) 2007 Daniel A. Steffen <das@users.sourceforge.net>
- *
- * See the file "license.terms" for information on usage and redistribution of
- * this file, and for a DISCLAIMER OF ALL WARRANTIES.
- */
-
-#include "tclInt.h"
-#include "tommath.h"
-#include <math.h>
-
-/*
- * Table of all object types.
- */
-
-static Tcl_HashTable typeTable;
-static int typeTableInitialized = 0; /* 0 means not yet initialized. */
-TCL_DECLARE_MUTEX(tableMutex)
-
-/*
- * Head of the list of free Tcl_Obj structs we maintain.
- */
-
-Tcl_Obj *tclFreeObjList = NULL;
-
-/*
- * The object allocator is single threaded. This mutex is referenced by the
- * TclNewObj macro, however, so must be visible.
- */
-
-#ifdef TCL_THREADS
-MODULE_SCOPE Tcl_Mutex tclObjMutex;
-Tcl_Mutex tclObjMutex;
-#endif
-
-/*
- * Pointer to a heap-allocated string of length zero that the Tcl core uses as
- * the value of an empty string representation for an object. This value is
- * shared by all new objects allocated by Tcl_NewObj.
- */
-
-char tclEmptyString = '\0';
-char *tclEmptyStringRep = &tclEmptyString;
-
-#if defined(TCL_MEM_DEBUG) && defined(TCL_THREADS)
-/*
- * Structure for tracking the source file and line number where a given
- * Tcl_Obj was allocated. We also track the pointer to the Tcl_Obj itself,
- * for sanity checking purposes.
- */
-
-typedef struct ObjData {
- Tcl_Obj *objPtr; /* The pointer to the allocated Tcl_Obj. */
- const char *file; /* The name of the source file calling this
- * function; used for debugging. */
- int line; /* Line number in the source file; used for
- * debugging. */
-} ObjData;
-#endif /* TCL_MEM_DEBUG && TCL_THREADS */
-
-/*
- * All static variables used in this file are collected into a single instance
- * of the following structure. For multi-threaded implementations, there is
- * one instance of this structure for each thread.
- *
- * Notice that different structures with the same name appear in other files.
- * The structure defined below is used in this file only.
- */
-
-typedef struct ThreadSpecificData {
- Tcl_HashTable *lineCLPtr; /* This table remembers for each Tcl_Obj
- * generated by a call to the function
- * TclSubstTokens() from a literal text
- * where bs+nl sequences occured in it, if
- * any. I.e. this table keeps track of
- * invisible and stripped continuation lines.
- * Its keys are Tcl_Obj pointers, the values
- * are ContLineLoc pointers. See the file
- * tclCompile.h for the definition of this
- * structure, and for references to all
- * related places in the core. */
-#if defined(TCL_MEM_DEBUG) && defined(TCL_THREADS)
- Tcl_HashTable *objThreadMap;/* Thread local table that is used to check
- * that a Tcl_Obj was not allocated by some
- * other thread. */
-#endif /* TCL_MEM_DEBUG && TCL_THREADS */
-} ThreadSpecificData;
-
-static Tcl_ThreadDataKey dataKey;
-
-static void TclThreadFinalizeContLines(ClientData clientData);
-static ThreadSpecificData *TclGetContLineTable(void);
-
-/*
- * Nested Tcl_Obj deletion management support
- *
- * All context references used in the object freeing code are pointers to this
- * structure; every thread will have its own structure instance. The purpose
- * of this structure is to allow deeply nested collections of Tcl_Objs to be
- * freed without taking a vast depth of C stack (which could cause all sorts
- * of breakage.)
- */
-
-typedef struct PendingObjData {
- int deletionCount; /* Count of the number of invokations of
- * TclFreeObj() are on the stack (at least
- * conceptually; many are actually expanded
- * macros). */
- Tcl_Obj *deletionStack; /* Stack of objects that have had TclFreeObj()
- * invoked upon them but which can't be
- * deleted yet because they are in a nested
- * invokation of TclFreeObj(). By postponing
- * this way, we limit the maximum overall C
- * stack depth when deleting a complex object.
- * The down-side is that we alter the overall
- * behaviour by altering the order in which
- * objects are deleted, and we change the
- * order in which the string rep and the
- * internal rep of an object are deleted. Note
- * that code which assumes the previous
- * behaviour in either of these respects is
- * unsafe anyway; it was never documented as
- * to exactly what would happen in these
- * cases, and the overall contract of a
- * user-level Tcl_DecrRefCount() is still
- * preserved (assuming that a particular T_DRC
- * would delete an object is not very
- * safe). */
-} PendingObjData;
-
-/*
- * These are separated out so that some semantic content is attached
- * to them.
- */
-#define ObjDeletionLock(contextPtr) ((contextPtr)->deletionCount++)
-#define ObjDeletionUnlock(contextPtr) ((contextPtr)->deletionCount--)
-#define ObjDeletePending(contextPtr) ((contextPtr)->deletionCount > 0)
-#define ObjOnStack(contextPtr) ((contextPtr)->deletionStack != NULL)
-#define PushObjToDelete(contextPtr,objPtr) \
- /* The string rep is already invalidated so we can use the bytes value \
- * for our pointer chain: push onto the head of the stack. */ \
- (objPtr)->bytes = (char *) ((contextPtr)->deletionStack); \
- (contextPtr)->deletionStack = (objPtr)
-#define PopObjToDelete(contextPtr,objPtrVar) \
- (objPtrVar) = (contextPtr)->deletionStack; \
- (contextPtr)->deletionStack = (Tcl_Obj *) (objPtrVar)->bytes
-
-/*
- * Macro to set up the local reference to the deletion context.
- */
-#ifndef TCL_THREADS
-static PendingObjData pendingObjData;
-#define ObjInitDeletionContext(contextPtr) \
- PendingObjData *const contextPtr = &pendingObjData
-#elif HAVE_FAST_TSD
-static __thread PendingObjData pendingObjData;
-#define ObjInitDeletionContext(contextPtr) \
- PendingObjData *const contextPtr = &pendingObjData
-#else
-static Tcl_ThreadDataKey pendingObjDataKey;
-#define ObjInitDeletionContext(contextPtr) \
- PendingObjData *const contextPtr = \
- Tcl_GetThreadData(&pendingObjDataKey, sizeof(PendingObjData))
-#endif
-
-/*
- * Macros to pack/unpack a bignum's fields in a Tcl_Obj internal rep
- */
-
-#define PACK_BIGNUM(bignum, objPtr) \
- if ((bignum).used > 0x7fff) { \
- mp_int *temp = (void *) ckalloc((unsigned) sizeof(mp_int)); \
- *temp = bignum; \
- (objPtr)->internalRep.twoPtrValue.ptr1 = temp; \
- (objPtr)->internalRep.twoPtrValue.ptr2 = INT2PTR(-1); \
- } else { \
- if ((bignum).alloc > 0x7fff) { \
- mp_shrink(&(bignum)); \
- } \
- (objPtr)->internalRep.twoPtrValue.ptr1 = (void *) (bignum).dp; \
- (objPtr)->internalRep.twoPtrValue.ptr2 = INT2PTR( ((bignum).sign << 30) \
- | ((bignum).alloc << 15) | ((bignum).used)); \
- }
-
-#define UNPACK_BIGNUM(objPtr, bignum) \
- if ((objPtr)->internalRep.twoPtrValue.ptr2 == INT2PTR(-1)) { \
- (bignum) = *((mp_int *) ((objPtr)->internalRep.twoPtrValue.ptr1)); \
- } else { \
- (bignum).dp = (objPtr)->internalRep.twoPtrValue.ptr1; \
- (bignum).sign = PTR2INT((objPtr)->internalRep.twoPtrValue.ptr2) >> 30; \
- (bignum).alloc = \
- (PTR2INT((objPtr)->internalRep.twoPtrValue.ptr2) >> 15) & 0x7fff; \
- (bignum).used = PTR2INT((objPtr)->internalRep.twoPtrValue.ptr2) & 0x7fff; \
- }
-
-/*
- * Prototypes for functions defined later in this file:
- */
-
-static int ParseBoolean(Tcl_Obj *objPtr);
-static int SetDoubleFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
-static int SetIntFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
-static void UpdateStringOfDouble(Tcl_Obj *objPtr);
-static void UpdateStringOfInt(Tcl_Obj *objPtr);
-#ifndef TCL_WIDE_INT_IS_LONG
-static void UpdateStringOfWideInt(Tcl_Obj *objPtr);
-static int SetWideIntFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
-#endif
-static void FreeBignum(Tcl_Obj *objPtr);
-static void DupBignum(Tcl_Obj *objPtr, Tcl_Obj *copyPtr);
-static void UpdateStringOfBignum(Tcl_Obj *objPtr);
-static int GetBignumFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
- int copy, mp_int *bignumValue);
-
-/*
- * Prototypes for the array hash key methods.
- */
-
-static Tcl_HashEntry * AllocObjEntry(Tcl_HashTable *tablePtr, void *keyPtr);
-
-/*
- * Prototypes for the CommandName object type.
- */
-
-static void DupCmdNameInternalRep(Tcl_Obj *objPtr,
- Tcl_Obj *copyPtr);
-static void FreeCmdNameInternalRep(Tcl_Obj *objPtr);
-static int SetCmdNameFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
-
-/*
- * The structures below defines the Tcl object types defined in this file by
- * means of functions that can be invoked by generic object code. See also
- * tclStringObj.c, tclListObj.c, tclByteCode.c for other type manager
- * implementations.
- */
-
-static const Tcl_ObjType oldBooleanType = {
- "boolean", /* name */
- NULL, /* freeIntRepProc */
- NULL, /* dupIntRepProc */
- NULL, /* updateStringProc */
- TclSetBooleanFromAny /* setFromAnyProc */
-};
-const Tcl_ObjType tclBooleanType = {
- "booleanString", /* name */
- NULL, /* freeIntRepProc */
- NULL, /* dupIntRepProc */
- NULL, /* updateStringProc */
- TclSetBooleanFromAny /* setFromAnyProc */
-};
-const Tcl_ObjType tclDoubleType = {
- "double", /* name */
- NULL, /* freeIntRepProc */
- NULL, /* dupIntRepProc */
- UpdateStringOfDouble, /* updateStringProc */
- SetDoubleFromAny /* setFromAnyProc */
-};
-const Tcl_ObjType tclIntType = {
- "int", /* name */
- NULL, /* freeIntRepProc */
- NULL, /* dupIntRepProc */
- UpdateStringOfInt, /* updateStringProc */
- SetIntFromAny /* setFromAnyProc */
-};
-#ifndef TCL_WIDE_INT_IS_LONG
-const Tcl_ObjType tclWideIntType = {
- "wideInt", /* name */
- NULL, /* freeIntRepProc */
- NULL, /* dupIntRepProc */
- UpdateStringOfWideInt, /* updateStringProc */
- SetWideIntFromAny /* setFromAnyProc */
-};
-#endif
-const Tcl_ObjType tclBignumType = {
- "bignum", /* name */
- FreeBignum, /* freeIntRepProc */
- DupBignum, /* dupIntRepProc */
- UpdateStringOfBignum, /* updateStringProc */
- NULL /* setFromAnyProc */
-};
-
-/*
- * The structure below defines the Tcl obj hash key type.
- */
-
-const Tcl_HashKeyType tclObjHashKeyType = {
- TCL_HASH_KEY_TYPE_VERSION, /* version */
- 0, /* flags */
- TclHashObjKey, /* hashKeyProc */
- TclCompareObjKeys, /* compareKeysProc */
- AllocObjEntry, /* allocEntryProc */
- TclFreeObjEntry /* freeEntryProc */
-};
-
-/*
- * The structure below defines the command name Tcl object type by means of
- * functions that can be invoked by generic object code. Objects of this type
- * cache the Command pointer that results from looking up command names in the
- * command hashtable. Such objects appear as the zeroth ("command name")
- * argument in a Tcl command.
- *
- * NOTE: the ResolvedCmdName that gets cached is stored in the
- * twoPtrValue.ptr1 field, and the twoPtrValue.ptr2 field is unused. You might
- * think you could use the simpler otherValuePtr field to store the single
- * ResolvedCmdName pointer, but DO NOT DO THIS. It seems that some extensions
- * use the second internal pointer field of the twoPtrValue field for their
- * own purposes.
- *
- * TRICKY POINT! Some extensions update this structure! (Notably, these
- * include TclBlend and TCom). This is highly ill-advised on their part, but
- * does allow them to delete a command when references to it are gone, which
- * is fragile but useful given their somewhat-OO style. Because of this, this
- * structure MUST NOT be const so that the C compiler puts the data in
- * writable memory. [Bug 2558422] [Bug 07d13d99b0a9]
- * TODO: Provide a better API for those extensions so that they can coexist...
- */
-
-Tcl_ObjType tclCmdNameType = {
- "cmdName", /* name */
- FreeCmdNameInternalRep, /* freeIntRepProc */
- DupCmdNameInternalRep, /* dupIntRepProc */
- NULL, /* updateStringProc */
- SetCmdNameFromAny /* setFromAnyProc */
-};
-
-/*
- * Structure containing a cached pointer to a command that is the result of
- * resolving the command's name in some namespace. It is the internal
- * representation for a cmdName object. It contains the pointer along with
- * some information that is used to check the pointer's validity.
- */
-
-typedef struct ResolvedCmdName {
- Command *cmdPtr; /* A cached Command pointer. */
- Namespace *refNsPtr; /* Points to the namespace containing the
- * reference (not the namespace that contains
- * the referenced command). NULL if the name
- * is fully qualified.*/
- long refNsId; /* refNsPtr's unique namespace id. Used to
- * verify that refNsPtr is still valid (e.g.,
- * it's possible that the cmd's containing
- * namespace was deleted and a new one created
- * at the same address). */
- int refNsCmdEpoch; /* Value of the referencing namespace's
- * cmdRefEpoch when the pointer was cached.
- * Before using the cached pointer, we check
- * if the namespace's epoch was incremented;
- * if so, this cached pointer is invalid. */
- int cmdEpoch; /* Value of the command's cmdEpoch when this
- * pointer was cached. Before using the cached
- * pointer, we check if the cmd's epoch was
- * incremented; if so, the cmd was renamed,
- * deleted, hidden, or exposed, and so the
- * pointer is invalid. */
- int refCount; /* Reference count: 1 for each cmdName object
- * that has a pointer to this ResolvedCmdName
- * structure as its internal rep. This
- * structure can be freed when refCount
- * becomes zero. */
-} ResolvedCmdName;
-
-/*
- *-------------------------------------------------------------------------
- *
- * TclInitObjectSubsystem --
- *
- * This function is invoked to perform once-only initialization of the
- * type table. It also registers the object types defined in this file.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Initializes the table of defined object types "typeTable" with builtin
- * object types defined in this file.
- *
- *-------------------------------------------------------------------------
- */
-
-void
-TclInitObjSubsystem(void)
-{
- Tcl_MutexLock(&tableMutex);
- typeTableInitialized = 1;
- Tcl_InitHashTable(&typeTable, TCL_STRING_KEYS);
- Tcl_MutexUnlock(&tableMutex);
-
- Tcl_RegisterObjType(&tclByteArrayType);
- Tcl_RegisterObjType(&tclDoubleType);
- Tcl_RegisterObjType(&tclEndOffsetType);
- Tcl_RegisterObjType(&tclIntType);
- Tcl_RegisterObjType(&tclStringType);
- Tcl_RegisterObjType(&tclListType);
- Tcl_RegisterObjType(&tclDictType);
- Tcl_RegisterObjType(&tclByteCodeType);
- Tcl_RegisterObjType(&tclArraySearchType);
- Tcl_RegisterObjType(&tclCmdNameType);
- Tcl_RegisterObjType(&tclRegexpType);
- Tcl_RegisterObjType(&tclProcBodyType);
-
- /* For backward compatibility only ... */
- Tcl_RegisterObjType(&oldBooleanType);
-#ifndef TCL_WIDE_INT_IS_LONG
- Tcl_RegisterObjType(&tclWideIntType);
-#endif
-
-#ifdef TCL_COMPILE_STATS
- Tcl_MutexLock(&tclObjMutex);
- tclObjsAlloced = 0;
- tclObjsFreed = 0;
- {
- int i;
-
- for (i=0 ; i<TCL_MAX_SHARED_OBJ_STATS ; i++) {
- tclObjsShared[i] = 0;
- }
- }
- Tcl_MutexUnlock(&tclObjMutex);
-#endif
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclFinalizeThreadObjects --
- *
- * This function is called by Tcl_FinalizeThread to clean up thread
- * specific Tcl_Obj information.
- *
- * Results:
- * None.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-void
-TclFinalizeThreadObjects(void)
-{
-#if defined(TCL_MEM_DEBUG) && defined(TCL_THREADS)
- Tcl_HashEntry *hPtr;
- Tcl_HashSearch hSearch;
- ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
- Tcl_HashTable *tablePtr = tsdPtr->objThreadMap;
-
- if (tablePtr != NULL) {
- for (hPtr = Tcl_FirstHashEntry(tablePtr, &hSearch);
- hPtr != NULL; hPtr = Tcl_NextHashEntry(&hSearch)) {
- ObjData *objData = Tcl_GetHashValue(hPtr);
-
- if (objData != NULL) {
- ckfree(objData);
- }
- }
-
- Tcl_DeleteHashTable(tablePtr);
- ckfree(tablePtr);
- tsdPtr->objThreadMap = NULL;
- }
-#endif
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclFinalizeObjects --
- *
- * This function is called by Tcl_Finalize to clean up all registered
- * Tcl_ObjType's and to reset the tclFreeObjList.
- *
- * Results:
- * None.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-void
-TclFinalizeObjects(void)
-{
- Tcl_MutexLock(&tableMutex);
- if (typeTableInitialized) {
- Tcl_DeleteHashTable(&typeTable);
- typeTableInitialized = 0;
- }
- Tcl_MutexUnlock(&tableMutex);
-
- /*
- * All we do here is reset the head pointer of the linked list of free
- * Tcl_Obj's to NULL; the memory finalization will take care of releasing
- * memory for us.
- */
- Tcl_MutexLock(&tclObjMutex);
- tclFreeObjList = NULL;
- Tcl_MutexUnlock(&tclObjMutex);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclGetContLineTable --
- *
- * This procedure is a helper which returns the thread-specific
- * hash-table used to track continuation line information associated with
- * Tcl_Obj*, and the objThreadMap, etc.
- *
- * Results:
- * A reference to the thread-data.
- *
- * Side effects:
- * May allocate memory for the thread-data.
- *
- * TIP #280
- *----------------------------------------------------------------------
- */
-
-static ThreadSpecificData *
-TclGetContLineTable(void)
-{
- /*
- * Initialize the hashtable tracking invisible continuation lines. For
- * the release we use a thread exit handler to ensure that this is done
- * before TSD blocks are made invalid. The TclFinalizeObjects() which
- * would be the natural place for this is invoked afterwards, meaning that
- * we try to operate on a data structure already gone.
- */
-
- ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-
- if (!tsdPtr->lineCLPtr) {
- tsdPtr->lineCLPtr = ckalloc(sizeof(Tcl_HashTable));
- Tcl_InitHashTable(tsdPtr->lineCLPtr, TCL_ONE_WORD_KEYS);
- Tcl_CreateThreadExitHandler(TclThreadFinalizeContLines,NULL);
- }
- return tsdPtr;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclContinuationsEnter --
- *
- * This procedure is a helper which saves the continuation line
- * information associated with a Tcl_Obj*.
- *
- * Results:
- * A reference to the newly created continuation line location table.
- *
- * Side effects:
- * Allocates memory for the table of continuation line locations.
- *
- * TIP #280
- *----------------------------------------------------------------------
- */
-
-ContLineLoc *
-TclContinuationsEnter(
- Tcl_Obj *objPtr,
- int num,
- int *loc)
-{
- int newEntry;
- ThreadSpecificData *tsdPtr = TclGetContLineTable();
- Tcl_HashEntry *hPtr =
- Tcl_CreateHashEntry(tsdPtr->lineCLPtr, objPtr, &newEntry);
- ContLineLoc *clLocPtr = ckalloc(sizeof(ContLineLoc) + num*sizeof(int));
-
- if (!newEntry) {
- /*
- * We're entering ContLineLoc data for the same value more than one
- * time. Taking care not to leak the old entry.
- *
- * This can happen when literals in a proc body are shared. See for
- * example test info-30.19 where the action (code) for all branches of
- * the switch command is identical, mapping them all to the same
- * literal. An interesting result of this is that the number and
- * locations (offset) of invisible continuation lines in the literal
- * are the same for all occurences.
- *
- * Note that while reusing the existing entry is possible it requires
- * the same actions as for a new entry because we have to copy the
- * incoming num/loc data even so. Because we are called from
- * TclContinuationsEnterDerived for this case, which modified the
- * stored locations (Rebased to the proper relative offset). Just
- * returning the stored entry would rebase them a second time, or
- * more, hosing the data. It is easier to simply replace, as we are
- * doing.
- */
-
- ckfree(Tcl_GetHashValue(hPtr));
- }
-
- clLocPtr->num = num;
- memcpy(&clLocPtr->loc, loc, num*sizeof(int));
- clLocPtr->loc[num] = CLL_END; /* Sentinel */
- Tcl_SetHashValue(hPtr, clLocPtr);
-
- return clLocPtr;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclContinuationsEnterDerived --
- *
- * This procedure is a helper which computes the continuation line
- * information associated with a Tcl_Obj* cut from the middle of a
- * script.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Allocates memory for the table of continuation line locations.
- *
- * TIP #280
- *----------------------------------------------------------------------
- */
-
-void
-TclContinuationsEnterDerived(
- Tcl_Obj *objPtr,
- int start,
- int *clNext)
-{
- int length, end, num;
- int *wordCLLast = clNext;
-
- /*
- * We have to handle invisible continuations lines here as well, despite
- * the code we have in TclSubstTokens (TST) for that. Why ? Nesting. If
- * our script is the sole argument to an 'eval' command, for example, the
- * scriptCLLocPtr we are using was generated by a previous call to TST,
- * and while the words we have here may contain continuation lines they
- * are invisible already, and the inner call to TST had no bs+nl sequences
- * to trigger its code.
- *
- * Luckily for us, the table we have to create here for the current word
- * has to be a slice of the table currently in use, with the locations
- * suitably modified to be relative to the start of the word instead of
- * relative to the script.
- *
- * That is what we are doing now. Determine the slice we need, and if not
- * empty, wrap it into a new table, and save the result into our
- * thread-global hashtable, as usual.
- */
-
- /*
- * First compute the range of the word within the script. (Is there a
- * better way which doesn't shimmer?)
- */
-
- Tcl_GetStringFromObj(objPtr, &length);
- end = start + length; /* First char after the word */
-
- /*
- * Then compute the table slice covering the range of the word.
- */
-
- while (*wordCLLast >= 0 && *wordCLLast < end) {
- wordCLLast++;
- }
-
- /*
- * And generate the table from the slice, if it was not empty.
- */
-
- num = wordCLLast - clNext;
- if (num) {
- int i;
- ContLineLoc *clLocPtr = TclContinuationsEnter(objPtr, num, clNext);
-
- /*
- * Re-base the locations.
- */
-
- for (i=0 ; i<num ; i++) {
- clLocPtr->loc[i] -= start;
-
- /*
- * Continuation lines coming before the string and affecting us
- * should not happen, due to the proper maintenance of clNext
- * during compilation.
- */
-
- if (clLocPtr->loc[i] < 0) {
- Tcl_Panic("Derived ICL data for object using offsets from before the script");
- }
- }
- }
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclContinuationsCopy --
- *
- * This procedure is a helper which copies the continuation line
- * information associated with a Tcl_Obj* to another Tcl_Obj*. It is
- * assumed that both contain the same string/script. Use this when a
- * script is duplicated because it was shared.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Allocates memory for the table of continuation line locations.
- *
- * TIP #280
- *----------------------------------------------------------------------
- */
-
-void
-TclContinuationsCopy(
- Tcl_Obj *objPtr,
- Tcl_Obj *originObjPtr)
-{
- ThreadSpecificData *tsdPtr = TclGetContLineTable();
- Tcl_HashEntry *hPtr =
- Tcl_FindHashEntry(tsdPtr->lineCLPtr, originObjPtr);
-
- if (hPtr) {
- ContLineLoc *clLocPtr = Tcl_GetHashValue(hPtr);
-
- TclContinuationsEnter(objPtr, clLocPtr->num, clLocPtr->loc);
- }
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclContinuationsGet --
- *
- * This procedure is a helper which retrieves the continuation line
- * information associated with a Tcl_Obj*, if it has any.
- *
- * Results:
- * A reference to the continuation line location table, or NULL if the
- * Tcl_Obj* has no such information associated with it.
- *
- * Side effects:
- * None.
- *
- * TIP #280
- *----------------------------------------------------------------------
- */
-
-ContLineLoc *
-TclContinuationsGet(
- Tcl_Obj *objPtr)
-{
- ThreadSpecificData *tsdPtr = TclGetContLineTable();
- Tcl_HashEntry *hPtr =
- Tcl_FindHashEntry(tsdPtr->lineCLPtr, objPtr);
-
- if (!hPtr) {
- return NULL;
- }
- return Tcl_GetHashValue(hPtr);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclThreadFinalizeContLines --
- *
- * This procedure is a helper which releases all continuation line
- * information currently known. It is run as a thread exit handler.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Releases memory.
- *
- * TIP #280
- *----------------------------------------------------------------------
- */
-
-static void
-TclThreadFinalizeContLines(
- ClientData clientData)
-{
- /*
- * Release the hashtable tracking invisible continuation lines.
- */
-
- ThreadSpecificData *tsdPtr = TclGetContLineTable();
- Tcl_HashEntry *hPtr;
- Tcl_HashSearch hSearch;
-
- for (hPtr = Tcl_FirstHashEntry(tsdPtr->lineCLPtr, &hSearch);
- hPtr != NULL; hPtr = Tcl_NextHashEntry(&hSearch)) {
- ckfree(Tcl_GetHashValue(hPtr));
- Tcl_DeleteHashEntry(hPtr);
- }
- Tcl_DeleteHashTable(tsdPtr->lineCLPtr);
- ckfree(tsdPtr->lineCLPtr);
- tsdPtr->lineCLPtr = NULL;
-}
-
-/*
- *--------------------------------------------------------------
- *
- * Tcl_RegisterObjType --
- *
- * This function is called to register a new Tcl object type in the table
- * of all object types supported by Tcl.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The type is registered in the Tcl type table. If there was already a
- * type with the same name as in typePtr, it is replaced with the new
- * type.
- *
- *--------------------------------------------------------------
- */
-
-void
-Tcl_RegisterObjType(
- const Tcl_ObjType *typePtr) /* Information about object type; storage must
- * be statically allocated (must live
- * forever). */
-{
- int isNew;
-
- Tcl_MutexLock(&tableMutex);
- Tcl_SetHashValue(
- Tcl_CreateHashEntry(&typeTable, typePtr->name, &isNew), typePtr);
- Tcl_MutexUnlock(&tableMutex);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_AppendAllObjTypes --
- *
- * This function appends onto the argument object the name of each object
- * type as a list element. This includes the builtin object types (e.g.
- * int, list) as well as those added using Tcl_NewObj. These names can be
- * used, for example, with Tcl_GetObjType to get pointers to the
- * corresponding Tcl_ObjType structures.
- *
- * Results:
- * The return value is normally TCL_OK; in this case the object
- * referenced by objPtr has each type name appended to it. If an error
- * occurs, TCL_ERROR is returned and the interpreter's result holds an
- * error message.
- *
- * Side effects:
- * If necessary, the object referenced by objPtr is converted into a list
- * object.
- *
- *----------------------------------------------------------------------
- */
-
-int
-Tcl_AppendAllObjTypes(
- Tcl_Interp *interp, /* Interpreter used for error reporting. */
- Tcl_Obj *objPtr) /* Points to the Tcl object onto which the
- * name of each registered type is appended as
- * a list element. */
-{
- register Tcl_HashEntry *hPtr;
- Tcl_HashSearch search;
- int numElems;
-
- /*
- * Get the test for a valid list out of the way first.
- */
-
- if (TclListObjLength(interp, objPtr, &numElems) != TCL_OK) {
- return TCL_ERROR;
- }
-
- /*
- * Type names are NUL-terminated, not counted strings. This code relies on
- * that.
- */
-
- Tcl_MutexLock(&tableMutex);
- for (hPtr = Tcl_FirstHashEntry(&typeTable, &search);
- hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
- Tcl_ListObjAppendElement(NULL, objPtr,
- Tcl_NewStringObj(Tcl_GetHashKey(&typeTable, hPtr), -1));
- }
- Tcl_MutexUnlock(&tableMutex);
- return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_GetObjType --
- *
- * This function looks up an object type by name.
- *
- * Results:
- * If an object type with name matching "typeName" is found, a pointer to
- * its Tcl_ObjType structure is returned; otherwise, NULL is returned.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-const Tcl_ObjType *
-Tcl_GetObjType(
- const char *typeName) /* Name of Tcl object type to look up. */
-{
- register Tcl_HashEntry *hPtr;
- const Tcl_ObjType *typePtr = NULL;
-
- Tcl_MutexLock(&tableMutex);
- hPtr = Tcl_FindHashEntry(&typeTable, typeName);
- if (hPtr != NULL) {
- typePtr = Tcl_GetHashValue(hPtr);
- }
- Tcl_MutexUnlock(&tableMutex);
- return typePtr;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_ConvertToType --
- *
- * Convert the Tcl object "objPtr" to have type "typePtr" if possible.
- *
- * Results:
- * The return value is TCL_OK on success and TCL_ERROR on failure. If
- * TCL_ERROR is returned, then the interpreter's result contains an error
- * message unless "interp" is NULL. Passing a NULL "interp" allows this
- * function to be used as a test whether the conversion could be done
- * (and in fact was done).
- *
- * Side effects:
- * Any internal representation for the old type is freed.
- *
- *----------------------------------------------------------------------
- */
-
-int
-Tcl_ConvertToType(
- Tcl_Interp *interp, /* Used for error reporting if not NULL. */
- Tcl_Obj *objPtr, /* The object to convert. */
- const Tcl_ObjType *typePtr) /* The target type. */
-{
- if (objPtr->typePtr == typePtr) {
- return TCL_OK;
- }
-
- /*
- * Use the target type's Tcl_SetFromAnyProc to set "objPtr"s internal form
- * as appropriate for the target type. This frees the old internal
- * representation.
- */
-
- if (typePtr->setFromAnyProc == NULL) {
- if (interp) {
- Tcl_SetObjResult(interp, Tcl_ObjPrintf(
- "can't convert value to type %s", typePtr->name));
- Tcl_SetErrorCode(interp, "TCL", "API_ABUSE", NULL);
- }
- return TCL_ERROR;
- }
-
- return typePtr->setFromAnyProc(interp, objPtr);
-}
-
-/*
- *--------------------------------------------------------------
- *
- * TclDbDumpActiveObjects --
- *
- * This function is called to dump all of the active Tcl_Obj structs this
- * allocator knows about.
- *
- * Results:
- * None.
- *
- * Side effects:
- * None.
- *
- *--------------------------------------------------------------
- */
-
-void
-TclDbDumpActiveObjects(
- FILE *outFile)
-{
-#if defined(TCL_MEM_DEBUG) && defined(TCL_THREADS)
- Tcl_HashSearch hSearch;
- Tcl_HashEntry *hPtr;
- Tcl_HashTable *tablePtr;
- ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-
- tablePtr = tsdPtr->objThreadMap;
-
- if (tablePtr != NULL) {
- fprintf(outFile, "total objects: %d\n", tablePtr->numEntries);
- for (hPtr = Tcl_FirstHashEntry(tablePtr, &hSearch); hPtr != NULL;
- hPtr = Tcl_NextHashEntry(&hSearch)) {
- ObjData *objData = Tcl_GetHashValue(hPtr);
-
- if (objData != NULL) {
- fprintf(outFile,
- "key = 0x%p, objPtr = 0x%p, file = %s, line = %d\n",
- Tcl_GetHashKey(tablePtr, hPtr), objData->objPtr,
- objData->file, objData->line);
- } else {
- fprintf(outFile, "key = 0x%p\n",
- Tcl_GetHashKey(tablePtr, hPtr));
- }
- }
- }
-#endif
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclDbInitNewObj --
- *
- * Called via the TclNewObj or TclDbNewObj macros when TCL_MEM_DEBUG is
- * enabled. This function will initialize the members of a Tcl_Obj
- * struct. Initilization would be done inline via the TclNewObj macro
- * when compiling without TCL_MEM_DEBUG.
- *
- * Results:
- * The Tcl_Obj struct members are initialized.
- *
- * Side effects:
- * None.
- *----------------------------------------------------------------------
- */
-
-#ifdef TCL_MEM_DEBUG
-void
-TclDbInitNewObj(
- register Tcl_Obj *objPtr,
- register const char *file, /* The name of the source file calling this
- * function; used for debugging. */
- register int line) /* Line number in the source file; used for
- * debugging. */
-{
- objPtr->refCount = 0;
- objPtr->bytes = tclEmptyStringRep;
- objPtr->length = 0;
- objPtr->typePtr = NULL;
-
-#ifdef TCL_THREADS
- /*
- * Add entry to a thread local map used to check if a Tcl_Obj was
- * allocated by the currently executing thread.
- */
-
- if (!TclInExit()) {
- Tcl_HashEntry *hPtr;
- Tcl_HashTable *tablePtr;
- int isNew;
- ObjData *objData;
- ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-
- if (tsdPtr->objThreadMap == NULL) {
- tsdPtr->objThreadMap = ckalloc(sizeof(Tcl_HashTable));
- Tcl_InitHashTable(tsdPtr->objThreadMap, TCL_ONE_WORD_KEYS);
- }
- tablePtr = tsdPtr->objThreadMap;
- hPtr = Tcl_CreateHashEntry(tablePtr, objPtr, &isNew);
- if (!isNew) {
- Tcl_Panic("expected to create new entry for object map");
- }
-
- /*
- * Record the debugging information.
- */
-
- objData = ckalloc(sizeof(ObjData));
- objData->objPtr = objPtr;
- objData->file = file;
- objData->line = line;
- Tcl_SetHashValue(hPtr, objData);
- }
-#endif /* TCL_THREADS */
-}
-#endif /* TCL_MEM_DEBUG */
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_NewObj --
- *
- * This function is normally called when not debugging: i.e., when
- * TCL_MEM_DEBUG is not defined. It creates new Tcl objects that denote
- * the empty string. These objects have a NULL object type and NULL
- * string representation byte pointer. Type managers call this routine to
- * allocate new objects that they further initialize.
- *
- * When TCL_MEM_DEBUG is defined, this function just returns the result
- * of calling the debugging version Tcl_DbNewObj.
- *
- * Results:
- * The result is a newly allocated object that represents the empty
- * string. The new object's typePtr is set NULL and its ref count is set
- * to 0.
- *
- * Side effects:
- * If compiling with TCL_COMPILE_STATS, this function increments the
- * global count of allocated objects (tclObjsAlloced).
- *
- *----------------------------------------------------------------------
- */
-
-#ifdef TCL_MEM_DEBUG
-#undef Tcl_NewObj
-
-Tcl_Obj *
-Tcl_NewObj(void)
-{
- return Tcl_DbNewObj("unknown", 0);
-}
-
-#else /* if not TCL_MEM_DEBUG */
-
-Tcl_Obj *
-Tcl_NewObj(void)
-{
- register Tcl_Obj *objPtr;
-
- /*
- * Use the macro defined in tclInt.h - it will use the correct allocator.
- */
-
- TclNewObj(objPtr);
- return objPtr;
-}
-#endif /* TCL_MEM_DEBUG */
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_DbNewObj --
- *
- * This function is normally called when debugging: i.e., when
- * TCL_MEM_DEBUG is defined. It creates new Tcl objects that denote the
- * empty string. It is the same as the Tcl_NewObj function above except
- * that it calls Tcl_DbCkalloc directly with the file name and line
- * number from its caller. This simplifies debugging since then the
- * [memory active] command will report the correct file name and line
- * number when reporting objects that haven't been freed.
- *
- * When TCL_MEM_DEBUG is not defined, this function just returns the
- * result of calling Tcl_NewObj.
- *
- * Results:
- * The result is a newly allocated that represents the empty string. The
- * new object's typePtr is set NULL and its ref count is set to 0.
- *
- * Side effects:
- * If compiling with TCL_COMPILE_STATS, this function increments the
- * global count of allocated objects (tclObjsAlloced).
- *
- *----------------------------------------------------------------------
- */
-
-#ifdef TCL_MEM_DEBUG
-
-Tcl_Obj *
-Tcl_DbNewObj(
- register const char *file, /* The name of the source file calling this
- * function; used for debugging. */
- register int line) /* Line number in the source file; used for
- * debugging. */
-{
- register Tcl_Obj *objPtr;
-
- /*
- * Use the macro defined in tclInt.h - it will use the correct allocator.
- */
-
- TclDbNewObj(objPtr, file, line);
- return objPtr;
-}
-#else /* if not TCL_MEM_DEBUG */
-
-Tcl_Obj *
-Tcl_DbNewObj(
- const char *file, /* The name of the source file calling this
- * function; used for debugging. */
- int line) /* Line number in the source file; used for
- * debugging. */
-{
- return Tcl_NewObj();
-}
-#endif /* TCL_MEM_DEBUG */
-
-/*
- *----------------------------------------------------------------------
- *
- * TclAllocateFreeObjects --
- *
- * Function to allocate a number of free Tcl_Objs. This is done using a
- * single ckalloc to reduce the overhead for Tcl_Obj allocation.
- *
- * Assumes mutex is held.
- *
- * Results:
- * None.
- *
- * Side effects:
- * tclFreeObjList, the head of the list of free Tcl_Objs, is set to the
- * first of a number of free Tcl_Obj's linked together by their
- * internalRep.twoPtrValue.ptr1's.
- *
- *----------------------------------------------------------------------
- */
-
-#define OBJS_TO_ALLOC_EACH_TIME 100
-
-void
-TclAllocateFreeObjects(void)
-{
- size_t bytesToAlloc = (OBJS_TO_ALLOC_EACH_TIME * sizeof(Tcl_Obj));
- char *basePtr;
- register Tcl_Obj *prevPtr, *objPtr;
- register int i;
-
- /*
- * This has been noted by Purify to be a potential leak. The problem is
- * that Tcl, when not TCL_MEM_DEBUG compiled, keeps around all allocated
- * Tcl_Obj's, pointed to by tclFreeObjList, when freed instead of actually
- * freeing the memory. TclFinalizeObjects() does not ckfree() this memory,
- * but leaves it to Tcl's memory subsystem finalization to release it.
- * Purify apparently can't figure that out, and fires a false alarm.
- */
-
- basePtr = ckalloc(bytesToAlloc);
-
- prevPtr = NULL;
- objPtr = (Tcl_Obj *) basePtr;
- for (i = 0; i < OBJS_TO_ALLOC_EACH_TIME; i++) {
- objPtr->internalRep.twoPtrValue.ptr1 = prevPtr;
- prevPtr = objPtr;
- objPtr++;
- }
- tclFreeObjList = prevPtr;
-}
-#undef OBJS_TO_ALLOC_EACH_TIME
-
-/*
- *----------------------------------------------------------------------
- *
- * TclFreeObj --
- *
- * This function frees the memory associated with the argument object.
- * It is called by the tcl.h macro Tcl_DecrRefCount when an object's ref
- * count is zero. It is only "public" since it must be callable by that
- * macro wherever the macro is used. It should not be directly called by
- * clients.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Deallocates the storage for the object's Tcl_Obj structure after
- * deallocating the string representation and calling the type-specific
- * Tcl_FreeInternalRepProc to deallocate the object's internal
- * representation. If compiling with TCL_COMPILE_STATS, this function
- * increments the global count of freed objects (tclObjsFreed).
- *
- *----------------------------------------------------------------------
- */
-
-#ifdef TCL_MEM_DEBUG
-void
-TclFreeObj(
- register Tcl_Obj *objPtr) /* The object to be freed. */
-{
- register const Tcl_ObjType *typePtr = objPtr->typePtr;
-
- /*
- * This macro declares a variable, so must come here...
- */
-
- ObjInitDeletionContext(context);
-
-# ifdef TCL_THREADS
- /*
- * Check to make sure that the Tcl_Obj was allocated by the current
- * thread. Don't do this check when shutting down since thread local
- * storage can be finalized before the last Tcl_Obj is freed.
- */
-
- if (!TclInExit()) {
- Tcl_HashTable *tablePtr;
- Tcl_HashEntry *hPtr;
- ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-
- tablePtr = tsdPtr->objThreadMap;
- if (!tablePtr) {
- Tcl_Panic("TclFreeObj: object table not initialized");
- }
- hPtr = Tcl_FindHashEntry(tablePtr, (char *) objPtr);
- if (hPtr) {
- /*
- * As the Tcl_Obj is going to be deleted we remove the entry.
- */
-
- ObjData *objData = Tcl_GetHashValue(hPtr);
-
- if (objData != NULL) {
- ckfree(objData);
- }
-
- Tcl_DeleteHashEntry(hPtr);
- }
- }
-# endif
-
- /*
- * Check for a double free of the same value. This is slightly tricky
- * because it is customary to free a Tcl_Obj when its refcount falls
- * either from 1 to 0, or from 0 to -1. Falling from -1 to -2, though,
- * and so on, is always a sign of a botch in the caller.
- */
- if (objPtr->refCount < -1) {
- Tcl_Panic("Reference count for %p was negative", objPtr);
- }
- /*
- * Now, in case we just approved drop from 1 to 0 as acceptable, make
- * sure we do not accept a second free when falling from 0 to -1.
- * Skip that possibility so any double free will trigger the panic.
- */
- objPtr->refCount = -1;
-
- /*
- * Invalidate the string rep first so we can use the bytes value for our
- * pointer chain, and signal an obj deletion (as opposed to shimmering)
- * with 'length == -1'.
- */
-
- TclInvalidateStringRep(objPtr);
- objPtr->length = -1;
-
- if (ObjDeletePending(context)) {
- PushObjToDelete(context, objPtr);
- } else {
- TCL_DTRACE_OBJ_FREE(objPtr);
- if ((typePtr != NULL) && (typePtr->freeIntRepProc != NULL)) {
- ObjDeletionLock(context);
- typePtr->freeIntRepProc(objPtr);
- ObjDeletionUnlock(context);
- }
-
- Tcl_MutexLock(&tclObjMutex);
- ckfree(objPtr);
- Tcl_MutexUnlock(&tclObjMutex);
- TclIncrObjsFreed();
- ObjDeletionLock(context);
- while (ObjOnStack(context)) {
- Tcl_Obj *objToFree;
-
- PopObjToDelete(context, objToFree);
- TCL_DTRACE_OBJ_FREE(objToFree);
- TclFreeIntRep(objToFree);
-
- Tcl_MutexLock(&tclObjMutex);
- ckfree(objToFree);
- Tcl_MutexUnlock(&tclObjMutex);
- TclIncrObjsFreed();
- }
- ObjDeletionUnlock(context);
- }
-
- /*
- * We cannot use TclGetContinuationTable() here, because that may
- * re-initialize the thread-data for calls coming after the finalization.
- * We have to access it using the low-level call and then check for
- * validity. This function can be called after TclFinalizeThreadData() has
- * already killed the thread-global data structures. Performing
- * TCL_TSD_INIT will leave us with an un-initialized memory block upon
- * which we crash (if we where to access the uninitialized hashtable).
- */
-
- {
- ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
- Tcl_HashEntry *hPtr;
-
- if (tsdPtr->lineCLPtr) {
- hPtr = Tcl_FindHashEntry(tsdPtr->lineCLPtr, objPtr);
- if (hPtr) {
- ckfree(Tcl_GetHashValue(hPtr));
- Tcl_DeleteHashEntry(hPtr);
- }
- }
- }
-}
-#else /* TCL_MEM_DEBUG */
-
-void
-TclFreeObj(
- register Tcl_Obj *objPtr) /* The object to be freed. */
-{
- /*
- * Invalidate the string rep first so we can use the bytes value for our
- * pointer chain, and signal an obj deletion (as opposed to shimmering)
- * with 'length == -1'.
- */
-
- TclInvalidateStringRep(objPtr);
- objPtr->length = -1;
-
- if (!objPtr->typePtr || !objPtr->typePtr->freeIntRepProc) {
- /*
- * objPtr can be freed safely, as it will not attempt to free any
- * other objects: it will not cause recursive calls to this function.
- */
-
- TCL_DTRACE_OBJ_FREE(objPtr);
- TclFreeObjStorage(objPtr);
- TclIncrObjsFreed();
- } else {
- /*
- * This macro declares a variable, so must come here...
- */
-
- ObjInitDeletionContext(context);
-
- if (ObjDeletePending(context)) {
- PushObjToDelete(context, objPtr);
- } else {
- /*
- * Note that the contents of the while loop assume that the string
- * rep has already been freed and we don't want to do anything
- * fancy with adding to the queue inside ourselves. Must take care
- * to unstack the object first since freeing the internal rep can
- * add further objects to the stack. The code assumes that it is
- * the first thing in a block; all current usages in the core
- * satisfy this.
- */
-
- TCL_DTRACE_OBJ_FREE(objPtr);
- ObjDeletionLock(context);
- objPtr->typePtr->freeIntRepProc(objPtr);
- ObjDeletionUnlock(context);
-
- TclFreeObjStorage(objPtr);
- TclIncrObjsFreed();
- ObjDeletionLock(context);
- while (ObjOnStack(context)) {
- Tcl_Obj *objToFree;
-
- PopObjToDelete(context, objToFree);
- TCL_DTRACE_OBJ_FREE(objToFree);
- if ((objToFree->typePtr != NULL)
- && (objToFree->typePtr->freeIntRepProc != NULL)) {
- objToFree->typePtr->freeIntRepProc(objToFree);
- }
- TclFreeObjStorage(objToFree);
- TclIncrObjsFreed();
- }
- ObjDeletionUnlock(context);
- }
- }
-
- /*
- * We cannot use TclGetContinuationTable() here, because that may
- * re-initialize the thread-data for calls coming after the finalization.
- * We have to access it using the low-level call and then check for
- * validity. This function can be called after TclFinalizeThreadData() has
- * already killed the thread-global data structures. Performing
- * TCL_TSD_INIT will leave us with an un-initialized memory block upon
- * which we crash (if we where to access the uninitialized hashtable).
- */
-
- {
- ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
- Tcl_HashEntry *hPtr;
-
- if (tsdPtr->lineCLPtr) {
- hPtr = Tcl_FindHashEntry(tsdPtr->lineCLPtr, objPtr);
- if (hPtr) {
- ckfree(Tcl_GetHashValue(hPtr));
- Tcl_DeleteHashEntry(hPtr);
- }
- }
- }
-}
-#endif /* TCL_MEM_DEBUG */
-
-/*
- *----------------------------------------------------------------------
- *
- * TclObjBeingDeleted --
- *
- * This function returns 1 when the Tcl_Obj is being deleted. It is
- * provided for the rare cases where the reason for the loss of an
- * internal rep might be relevant. [FR 1512138]
- *
- * Results:
- * 1 if being deleted, 0 otherwise.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-int
-TclObjBeingDeleted(
- Tcl_Obj *objPtr)
-{
- return (objPtr->length == -1);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_DuplicateObj --
- *
- * Create and return a new object that is a duplicate of the argument
- * object.
- *
- * Results:
- * The return value is a pointer to a newly created Tcl_Obj. This object
- * has reference count 0 and the same type, if any, as the source object
- * objPtr. Also:
- * 1) If the source object has a valid string rep, we copy it;
- * otherwise, the duplicate's string rep is set NULL to mark it
- * invalid.
- * 2) If the source object has an internal representation (i.e. its
- * typePtr is non-NULL), the new object's internal rep is set to a
- * copy; otherwise the new internal rep is marked invalid.
- *
- * Side effects:
- * What constitutes "copying" the internal representation depends on the
- * type. For example, if the argument object is a list, the element
- * objects it points to will not actually be copied but will be shared
- * with the duplicate list. That is, the ref counts of the element
- * objects will be incremented.
- *
- *----------------------------------------------------------------------
- */
-
-#define SetDuplicateObj(dupPtr, objPtr) \
- { \
- const Tcl_ObjType *typePtr = (objPtr)->typePtr; \
- const char *bytes = (objPtr)->bytes; \
- if (bytes) { \
- TclInitStringRep((dupPtr), bytes, (objPtr)->length); \
- } else { \
- (dupPtr)->bytes = NULL; \
- } \
- if (typePtr) { \
- if (typePtr->dupIntRepProc) { \
- typePtr->dupIntRepProc((objPtr), (dupPtr)); \
- } else { \
- (dupPtr)->internalRep = (objPtr)->internalRep; \
- (dupPtr)->typePtr = typePtr; \
- } \
- } \
- }
-
-Tcl_Obj *
-Tcl_DuplicateObj(
- Tcl_Obj *objPtr) /* The object to duplicate. */
-{
- Tcl_Obj *dupPtr;
-
- TclNewObj(dupPtr);
- SetDuplicateObj(dupPtr, objPtr);
- return dupPtr;
-}
-
-void
-TclSetDuplicateObj(
- Tcl_Obj *dupPtr,
- Tcl_Obj *objPtr)
-{
- if (Tcl_IsShared(dupPtr)) {
- Tcl_Panic("%s called with shared object", "TclSetDuplicateObj");
- }
- TclInvalidateStringRep(dupPtr);
- TclFreeIntRep(dupPtr);
- SetDuplicateObj(dupPtr, objPtr);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_GetString --
- *
- * Returns the string representation byte array pointer for an object.
- *
- * Results:
- * Returns a pointer to the string representation of objPtr. The byte
- * array referenced by the returned pointer must not be modified by the
- * caller. Furthermore, the caller must copy the bytes if they need to
- * retain them since the object's string rep can change as a result of
- * other operations.
- *
- * Side effects:
- * May call the object's updateStringProc to update the string
- * representation from the internal representation.
- *
- *----------------------------------------------------------------------
- */
-
-char *
-Tcl_GetString(
- register Tcl_Obj *objPtr) /* Object whose string rep byte pointer should
- * be returned. */
-{
- if (objPtr->bytes != NULL) {
- return objPtr->bytes;
- }
-
- /*
- * Note we do not check for objPtr->typePtr == NULL. An invariant of
- * a properly maintained Tcl_Obj is that at least one of objPtr->bytes
- * and objPtr->typePtr must not be NULL. If broken extensions fail to
- * maintain that invariant, we can crash here.
- */
-
- if (objPtr->typePtr->updateStringProc == NULL) {
- /*
- * Those Tcl_ObjTypes which choose not to define an updateStringProc
- * must be written in such a way that (objPtr->bytes) never becomes
- * NULL. This panic was added in Tcl 8.1.
- */
-
- Tcl_Panic("UpdateStringProc should not be invoked for type %s",
- objPtr->typePtr->name);
- }
- objPtr->typePtr->updateStringProc(objPtr);
- if (objPtr->bytes == NULL || objPtr->length < 0
- || objPtr->bytes[objPtr->length] != '\0') {
- Tcl_Panic("UpdateStringProc for type '%s' "
- "failed to create a valid string rep", objPtr->typePtr->name);
- }
- return objPtr->bytes;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_GetStringFromObj --
- *
- * Returns the string representation's byte array pointer and length for
- * an object.
- *
- * Results:
- * Returns a pointer to the string representation of objPtr. If lengthPtr
- * isn't NULL, the length of the string representation is stored at
- * *lengthPtr. The byte array referenced by the returned pointer must not
- * be modified by the caller. Furthermore, the caller must copy the bytes
- * if they need to retain them since the object's string rep can change
- * as a result of other operations.
- *
- * Side effects:
- * May call the object's updateStringProc to update the string
- * representation from the internal representation.
- *
- *----------------------------------------------------------------------
- */
-
-char *
-Tcl_GetStringFromObj(
- register Tcl_Obj *objPtr, /* Object whose string rep byte pointer should
- * be returned. */
- register int *lengthPtr) /* If non-NULL, the location where the string
- * rep's byte array length should * be stored.
- * If NULL, no length is stored. */
-{
- (void) TclGetString(objPtr);
-
- if (lengthPtr != NULL) {
- *lengthPtr = objPtr->length;
- }
- return objPtr->bytes;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_InvalidateStringRep --
- *
- * This function is called to invalidate an object's string
- * representation.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Deallocates the storage for any old string representation, then sets
- * the string representation NULL to mark it invalid.
- *
- *----------------------------------------------------------------------
- */
-
-void
-Tcl_InvalidateStringRep(
- register Tcl_Obj *objPtr) /* Object whose string rep byte pointer should
- * be freed. */
-{
- TclInvalidateStringRep(objPtr);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_NewBooleanObj --
- *
- * This function is normally called when not debugging: i.e., when
- * TCL_MEM_DEBUG is not defined. It creates a new Tcl_Obj and
- * initializes it from the argument boolean value. A nonzero "boolValue"
- * is coerced to 1.
- *
- * When TCL_MEM_DEBUG is defined, this function just returns the result
- * of calling the debugging version Tcl_DbNewBooleanObj.
- *
- * Results:
- * The newly created object is returned. This object will have an invalid
- * string representation. The returned object has ref count 0.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-#undef Tcl_NewBooleanObj
-#ifdef TCL_MEM_DEBUG
-
-Tcl_Obj *
-Tcl_NewBooleanObj(
- register int boolValue) /* Boolean used to initialize new object. */
-{
- return Tcl_DbNewBooleanObj(boolValue, "unknown", 0);
-}
-
-#else /* if not TCL_MEM_DEBUG */
-
-Tcl_Obj *
-Tcl_NewBooleanObj(
- register int boolValue) /* Boolean used to initialize new object. */
-{
- register Tcl_Obj *objPtr;
-
- TclNewBooleanObj(objPtr, boolValue);
- return objPtr;
-}
-#endif /* TCL_MEM_DEBUG */
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_DbNewBooleanObj --
- *
- * This function is normally called when debugging: i.e., when
- * TCL_MEM_DEBUG is defined. It creates new boolean objects. It is the
- * same as the Tcl_NewBooleanObj function above except that it calls
- * Tcl_DbCkalloc directly with the file name and line number from its
- * caller. This simplifies debugging since then the [memory active]
- * command will report the correct file name and line number when
- * reporting objects that haven't been freed.
- *
- * When TCL_MEM_DEBUG is not defined, this function just returns the
- * result of calling Tcl_NewBooleanObj.
- *
- * Results:
- * The newly created object is returned. This object will have an invalid
- * string representation. The returned object has ref count 0.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-#undef Tcl_DbNewBooleanObj
-#ifdef TCL_MEM_DEBUG
-
-Tcl_Obj *
-Tcl_DbNewBooleanObj(
- register int boolValue, /* Boolean used to initialize new object. */
- const char *file, /* The name of the source file calling this
- * function; used for debugging. */
- int line) /* Line number in the source file; used for
- * debugging. */
-{
- register Tcl_Obj *objPtr;
-
- TclDbNewObj(objPtr, file, line);
- objPtr->bytes = NULL;
-
- objPtr->internalRep.longValue = (boolValue? 1 : 0);
- objPtr->typePtr = &tclIntType;
- return objPtr;
-}
-
-#else /* if not TCL_MEM_DEBUG */
-
-Tcl_Obj *
-Tcl_DbNewBooleanObj(
- register int boolValue, /* Boolean used to initialize new object. */
- const char *file, /* The name of the source file calling this
- * function; used for debugging. */
- int line) /* Line number in the source file; used for
- * debugging. */
-{
- return Tcl_NewBooleanObj(boolValue);
-}
-#endif /* TCL_MEM_DEBUG */
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_SetBooleanObj --
- *
- * Modify an object to be a boolean object and to have the specified
- * boolean value. A nonzero "boolValue" is coerced to 1.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The object's old string rep, if any, is freed. Also, any old internal
- * rep is freed.
- *
- *----------------------------------------------------------------------
- */
-
-#undef Tcl_SetBooleanObj
-void
-Tcl_SetBooleanObj(
- register Tcl_Obj *objPtr, /* Object whose internal rep to init. */
- register int boolValue) /* Boolean used to set object's value. */
-{
- if (Tcl_IsShared(objPtr)) {
- Tcl_Panic("%s called with shared object", "Tcl_SetBooleanObj");
- }
-
- TclSetBooleanObj(objPtr, boolValue);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_GetBooleanFromObj --
- *
- * Attempt to return a boolean from the Tcl object "objPtr". This
- * includes conversion from any of Tcl's numeric types.
- *
- * Results:
- * The return value is a standard Tcl object result. If an error occurs
- * during conversion, an error message is left in the interpreter's
- * result unless "interp" is NULL.
- *
- * Side effects:
- * The intrep of *objPtr may be changed.
- *
- *----------------------------------------------------------------------
- */
-
-int
-Tcl_GetBooleanFromObj(
- Tcl_Interp *interp, /* Used for error reporting if not NULL. */
- register Tcl_Obj *objPtr, /* The object from which to get boolean. */
- register int *boolPtr) /* Place to store resulting boolean. */
-{
- do {
- if (objPtr->typePtr == &tclIntType) {
- *boolPtr = (objPtr->internalRep.longValue != 0);
- return TCL_OK;
- }
- if (objPtr->typePtr == &tclBooleanType) {
- *boolPtr = (int) objPtr->internalRep.longValue;
- return TCL_OK;
- }
- if (objPtr->typePtr == &tclDoubleType) {
- /*
- * Caution: Don't be tempted to check directly for the "double"
- * Tcl_ObjType and then compare the intrep to 0.0. This isn't
- * reliable because a "double" Tcl_ObjType can hold the NaN value.
- * Use the API Tcl_GetDoubleFromObj, which does the checking and
- * sets the proper error message for us.
- */
-
- double d;
-
- if (Tcl_GetDoubleFromObj(interp, objPtr, &d) != TCL_OK) {
- return TCL_ERROR;
- }
- *boolPtr = (d != 0.0);
- return TCL_OK;
- }
- if (objPtr->typePtr == &tclBignumType) {
- *boolPtr = 1;
- return TCL_OK;
- }
-#ifndef TCL_WIDE_INT_IS_LONG
- if (objPtr->typePtr == &tclWideIntType) {
- *boolPtr = (objPtr->internalRep.wideValue != 0);
- return TCL_OK;
- }
-#endif
- } while ((ParseBoolean(objPtr) == TCL_OK) || (TCL_OK ==
- TclParseNumber(interp, objPtr, "boolean value", NULL,-1,NULL,0)));
- return TCL_ERROR;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclSetBooleanFromAny --
- *
- * Attempt to generate a boolean internal form for the Tcl object
- * "objPtr".
- *
- * Results:
- * The return value is a standard Tcl result. If an error occurs during
- * conversion, an error message is left in the interpreter's result
- * unless "interp" is NULL.
- *
- * Side effects:
- * If no error occurs, an integer 1 or 0 is stored as "objPtr"s internal
- * representation and the type of "objPtr" is set to boolean.
- *
- *----------------------------------------------------------------------
- */
-
-int
-TclSetBooleanFromAny(
- Tcl_Interp *interp, /* Used for error reporting if not NULL. */
- register Tcl_Obj *objPtr) /* The object to convert. */
-{
- /*
- * For some "pure" numeric Tcl_ObjTypes (no string rep), we can determine
- * whether a boolean conversion is possible without generating the string
- * rep.
- */
-
- if (objPtr->bytes == NULL) {
- if (objPtr->typePtr == &tclIntType) {
- switch (objPtr->internalRep.longValue) {
- case 0L: case 1L:
- return TCL_OK;
- }
- goto badBoolean;
- }
-
- if (objPtr->typePtr == &tclBignumType) {
- goto badBoolean;
- }
-
-#ifndef TCL_WIDE_INT_IS_LONG
- if (objPtr->typePtr == &tclWideIntType) {
- goto badBoolean;
- }
-#endif
-
- if (objPtr->typePtr == &tclDoubleType) {
- goto badBoolean;
- }
- }
-
- if (ParseBoolean(objPtr) == TCL_OK) {
- return TCL_OK;
- }
-
- badBoolean:
- if (interp != NULL) {
- int length;
- const char *str = Tcl_GetStringFromObj(objPtr, &length);
- Tcl_Obj *msg;
-
- TclNewLiteralStringObj(msg, "expected boolean value but got \"");
- Tcl_AppendLimitedToObj(msg, str, length, 50, "");
- Tcl_AppendToObj(msg, "\"", -1);
- Tcl_SetObjResult(interp, msg);
- Tcl_SetErrorCode(interp, "TCL", "VALUE", "BOOLEAN", NULL);
- }
- return TCL_ERROR;
-}
-
-static int
-ParseBoolean(
- register Tcl_Obj *objPtr) /* The object to parse/convert. */
-{
- int i, length, newBool;
- char lowerCase[6];
- const char *str = TclGetStringFromObj(objPtr, &length);
-
- if ((length == 0) || (length > 5)) {
- /*
- * Longest valid boolean string rep. is "false".
- */
-
- return TCL_ERROR;
- }
-
- switch (str[0]) {
- case '0':
- if (length == 1) {
- newBool = 0;
- goto numericBoolean;
- }
- return TCL_ERROR;
- case '1':
- if (length == 1) {
- newBool = 1;
- goto numericBoolean;
- }
- return TCL_ERROR;
- }
-
- /*
- * Force to lower case for case-insensitive detection. Filter out known
- * invalid characters at the same time.
- */
-
- for (i=0; i < length; i++) {
- char c = str[i];
-
- switch (c) {
- case 'A': case 'E': case 'F': case 'L': case 'N':
- case 'O': case 'R': case 'S': case 'T': case 'U': case 'Y':
- lowerCase[i] = c + (char) ('a' - 'A');
- break;
- case 'a': case 'e': case 'f': case 'l': case 'n':
- case 'o': case 'r': case 's': case 't': case 'u': case 'y':
- lowerCase[i] = c;
- break;
- default:
- return TCL_ERROR;
- }
- }
- lowerCase[length] = 0;
- switch (lowerCase[0]) {
- case 'y':
- /*
- * Checking the 'y' is redundant, but makes the code clearer.
- */
- if (strncmp(lowerCase, "yes", (size_t) length) == 0) {
- newBool = 1;
- goto goodBoolean;
- }
- return TCL_ERROR;
- case 'n':
- if (strncmp(lowerCase, "no", (size_t) length) == 0) {
- newBool = 0;
- goto goodBoolean;
- }
- return TCL_ERROR;
- case 't':
- if (strncmp(lowerCase, "true", (size_t) length) == 0) {
- newBool = 1;
- goto goodBoolean;
- }
- return TCL_ERROR;
- case 'f':
- if (strncmp(lowerCase, "false", (size_t) length) == 0) {
- newBool = 0;
- goto goodBoolean;
- }
- return TCL_ERROR;
- case 'o':
- if (length < 2) {
- return TCL_ERROR;
- }
- if (strncmp(lowerCase, "on", (size_t) length) == 0) {
- newBool = 1;
- goto goodBoolean;
- } else if (strncmp(lowerCase, "off", (size_t) length) == 0) {
- newBool = 0;
- goto goodBoolean;
- }
- return TCL_ERROR;
- default:
- return TCL_ERROR;
- }
-
- /*
- * Free the old internalRep before setting the new one. We do this as late
- * as possible to allow the conversion code, in particular
- * Tcl_GetStringFromObj, to use that old internalRep.
- */
-
- goodBoolean:
- TclFreeIntRep(objPtr);
- objPtr->internalRep.longValue = newBool;
- objPtr->typePtr = &tclBooleanType;
- return TCL_OK;
-
- numericBoolean:
- TclFreeIntRep(objPtr);
- objPtr->internalRep.longValue = newBool;
- objPtr->typePtr = &tclIntType;
- return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_NewDoubleObj --
- *
- * This function is normally called when not debugging: i.e., when
- * TCL_MEM_DEBUG is not defined. It creates a new double object and
- * initializes it from the argument double value.
- *
- * When TCL_MEM_DEBUG is defined, this function just returns the result
- * of calling the debugging version Tcl_DbNewDoubleObj.
- *
- * Results:
- * The newly created object is returned. This object will have an
- * invalid string representation. The returned object has ref count 0.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-#ifdef TCL_MEM_DEBUG
-#undef Tcl_NewDoubleObj
-
-Tcl_Obj *
-Tcl_NewDoubleObj(
- register double dblValue) /* Double used to initialize the object. */
-{
- return Tcl_DbNewDoubleObj(dblValue, "unknown", 0);
-}
-
-#else /* if not TCL_MEM_DEBUG */
-
-Tcl_Obj *
-Tcl_NewDoubleObj(
- register double dblValue) /* Double used to initialize the object. */
-{
- register Tcl_Obj *objPtr;
-
- TclNewDoubleObj(objPtr, dblValue);
- return objPtr;
-}
-#endif /* if TCL_MEM_DEBUG */
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_DbNewDoubleObj --
- *
- * This function is normally called when debugging: i.e., when
- * TCL_MEM_DEBUG is defined. It creates new double objects. It is the
- * same as the Tcl_NewDoubleObj function above except that it calls
- * Tcl_DbCkalloc directly with the file name and line number from its
- * caller. This simplifies debugging since then the [memory active]
- * command will report the correct file name and line number when
- * reporting objects that haven't been freed.
- *
- * When TCL_MEM_DEBUG is not defined, this function just returns the
- * result of calling Tcl_NewDoubleObj.
- *
- * Results:
- * The newly created object is returned. This object will have an invalid
- * string representation. The returned object has ref count 0.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-#ifdef TCL_MEM_DEBUG
-
-Tcl_Obj *
-Tcl_DbNewDoubleObj(
- register double dblValue, /* Double used to initialize the object. */
- const char *file, /* The name of the source file calling this
- * function; used for debugging. */
- int line) /* Line number in the source file; used for
- * debugging. */
-{
- register Tcl_Obj *objPtr;
-
- TclDbNewObj(objPtr, file, line);
- objPtr->bytes = NULL;
-
- objPtr->internalRep.doubleValue = dblValue;
- objPtr->typePtr = &tclDoubleType;
- return objPtr;
-}
-
-#else /* if not TCL_MEM_DEBUG */
-
-Tcl_Obj *
-Tcl_DbNewDoubleObj(
- register double dblValue, /* Double used to initialize the object. */
- const char *file, /* The name of the source file calling this
- * function; used for debugging. */
- int line) /* Line number in the source file; used for
- * debugging. */
-{
- return Tcl_NewDoubleObj(dblValue);
-}
-#endif /* TCL_MEM_DEBUG */
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_SetDoubleObj --
- *
- * Modify an object to be a double object and to have the specified
- * double value.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The object's old string rep, if any, is freed. Also, any old internal
- * rep is freed.
- *
- *----------------------------------------------------------------------
- */
-
-void
-Tcl_SetDoubleObj(
- register Tcl_Obj *objPtr, /* Object whose internal rep to init. */
- register double dblValue) /* Double used to set the object's value. */
-{
- if (Tcl_IsShared(objPtr)) {
- Tcl_Panic("%s called with shared object", "Tcl_SetDoubleObj");
- }
-
- TclSetDoubleObj(objPtr, dblValue);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_GetDoubleFromObj --
- *
- * Attempt to return a double from the Tcl object "objPtr". If the object
- * is not already a double, an attempt will be made to convert it to one.
- *
- * Results:
- * The return value is a standard Tcl object result. If an error occurs
- * during conversion, an error message is left in the interpreter's
- * result unless "interp" is NULL.
- *
- * Side effects:
- * If the object is not already a double, the conversion will free any
- * old internal representation.
- *
- *----------------------------------------------------------------------
- */
-
-int
-Tcl_GetDoubleFromObj(
- Tcl_Interp *interp, /* Used for error reporting if not NULL. */
- register Tcl_Obj *objPtr, /* The object from which to get a double. */
- register double *dblPtr) /* Place to store resulting double. */
-{
- do {
- if (objPtr->typePtr == &tclDoubleType) {
- if (TclIsNaN(objPtr->internalRep.doubleValue)) {
- if (interp != NULL) {
- Tcl_SetObjResult(interp, Tcl_NewStringObj(
- "floating point value is Not a Number", -1));
- Tcl_SetErrorCode(interp, "TCL", "VALUE", "DOUBLE", "NAN",
- NULL);
- }
- return TCL_ERROR;
- }
- *dblPtr = (double) objPtr->internalRep.doubleValue;
- return TCL_OK;
- }
- if (objPtr->typePtr == &tclIntType) {
- *dblPtr = objPtr->internalRep.longValue;
- return TCL_OK;
- }
- if (objPtr->typePtr == &tclBignumType) {
- mp_int big;
-
- UNPACK_BIGNUM(objPtr, big);
- *dblPtr = TclBignumToDouble(&big);
- return TCL_OK;
- }
-#ifndef TCL_WIDE_INT_IS_LONG
- if (objPtr->typePtr == &tclWideIntType) {
- *dblPtr = (double) objPtr->internalRep.wideValue;
- return TCL_OK;
- }
-#endif
- } while (SetDoubleFromAny(interp, objPtr) == TCL_OK);
- return TCL_ERROR;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * SetDoubleFromAny --
- *
- * Attempt to generate an double-precision floating point internal form
- * for the Tcl object "objPtr".
- *
- * Results:
- * The return value is a standard Tcl object result. If an error occurs
- * during conversion, an error message is left in the interpreter's
- * result unless "interp" is NULL.
- *
- * Side effects:
- * If no error occurs, a double is stored as "objPtr"s internal
- * representation.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-SetDoubleFromAny(
- Tcl_Interp *interp, /* Used for error reporting if not NULL. */
- register Tcl_Obj *objPtr) /* The object to convert. */
-{
- return TclParseNumber(interp, objPtr, "floating-point number", NULL, -1,
- NULL, 0);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * UpdateStringOfDouble --
- *
- * Update the string representation for a double-precision floating point
- * object. This must obey the current tcl_precision value for
- * double-to-string conversions. Note: This function does not free an
- * existing old string rep so storage will be lost if this has not
- * already been done.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The object's string is set to a valid string that results from the
- * double-to-string conversion.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-UpdateStringOfDouble(
- register Tcl_Obj *objPtr) /* Double obj with string rep to update. */
-{
- char buffer[TCL_DOUBLE_SPACE];
- register int len;
-
- Tcl_PrintDouble(NULL, objPtr->internalRep.doubleValue, buffer);
- len = strlen(buffer);
-
- objPtr->bytes = ckalloc(len + 1);
- memcpy(objPtr->bytes, buffer, (unsigned) len + 1);
- objPtr->length = len;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_NewIntObj --
- *
- * If a client is compiled with TCL_MEM_DEBUG defined, calls to
- * Tcl_NewIntObj to create a new integer object end up calling the
- * debugging function Tcl_DbNewLongObj instead.
- *
- * Otherwise, if the client is compiled without TCL_MEM_DEBUG defined,
- * calls to Tcl_NewIntObj result in a call to one of the two
- * Tcl_NewIntObj implementations below. We provide two implementations so
- * that the Tcl core can be compiled to do memory debugging of the core
- * even if a client does not request it for itself.
- *
- * Integer and long integer objects share the same "integer" type
- * implementation. We store all integers as longs and Tcl_GetIntFromObj
- * checks whether the current value of the long can be represented by an
- * int.
- *
- * Results:
- * The newly created object is returned. This object will have an invalid
- * string representation. The returned object has ref count 0.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-#undef Tcl_NewIntObj
-#ifdef TCL_MEM_DEBUG
-
-Tcl_Obj *
-Tcl_NewIntObj(
- register int intValue) /* Int used to initialize the new object. */
-{
- return Tcl_DbNewLongObj((long)intValue, "unknown", 0);
-}
-
-#else /* if not TCL_MEM_DEBUG */
-
-Tcl_Obj *
-Tcl_NewIntObj(
- register int intValue) /* Int used to initialize the new object. */
-{
- register Tcl_Obj *objPtr;
-
- TclNewIntObj(objPtr, intValue);
- return objPtr;
-}
-#endif /* if TCL_MEM_DEBUG */
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_SetIntObj --
- *
- * Modify an object to be an integer and to have the specified integer
- * value.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The object's old string rep, if any, is freed. Also, any old internal
- * rep is freed.
- *
- *----------------------------------------------------------------------
- */
-
-#undef Tcl_SetIntObj
-void
-Tcl_SetIntObj(
- register Tcl_Obj *objPtr, /* Object whose internal rep to init. */
- register int intValue) /* Integer used to set object's value. */
-{
- if (Tcl_IsShared(objPtr)) {
- Tcl_Panic("%s called with shared object", "Tcl_SetIntObj");
- }
-
- TclSetIntObj(objPtr, intValue);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_GetIntFromObj --
- *
- * Attempt to return an int from the Tcl object "objPtr". If the object
- * is not already an int, an attempt will be made to convert it to one.
- *
- * Integer and long integer objects share the same "integer" type
- * implementation. We store all integers as longs and Tcl_GetIntFromObj
- * checks whether the current value of the long can be represented by an
- * int.
- *
- * Results:
- * The return value is a standard Tcl object result. If an error occurs
- * during conversion or if the long integer held by the object can not be
- * represented by an int, an error message is left in the interpreter's
- * result unless "interp" is NULL.
- *
- * Side effects:
- * If the object is not already an int, the conversion will free any old
- * internal representation.
- *
- *----------------------------------------------------------------------
- */
-
-int
-Tcl_GetIntFromObj(
- Tcl_Interp *interp, /* Used for error reporting if not NULL. */
- register Tcl_Obj *objPtr, /* The object from which to get a int. */
- register int *intPtr) /* Place to store resulting int. */
-{
-#if (LONG_MAX == INT_MAX)
- return TclGetLongFromObj(interp, objPtr, (long *) intPtr);
-#else
- long l;
-
- if (TclGetLongFromObj(interp, objPtr, &l) != TCL_OK) {
- return TCL_ERROR;
- }
- if ((ULONG_MAX > UINT_MAX) && ((l > UINT_MAX) || (l < -(long)UINT_MAX))) {
- if (interp != NULL) {
- const char *s =
- "integer value too large to represent as non-long integer";
- Tcl_SetObjResult(interp, Tcl_NewStringObj(s, -1));
- Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW", s, NULL);
- }
- return TCL_ERROR;
- }
- *intPtr = (int) l;
- return TCL_OK;
-#endif
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * SetIntFromAny --
- *
- * Attempts to force the internal representation for a Tcl object to
- * tclIntType, specifically.
- *
- * Results:
- * The return value is a standard object Tcl result. If an error occurs
- * during conversion, an error message is left in the interpreter's
- * result unless "interp" is NULL.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-SetIntFromAny(
- Tcl_Interp *interp, /* Tcl interpreter */
- Tcl_Obj *objPtr) /* Pointer to the object to convert */
-{
- long l;
-
- return TclGetLongFromObj(interp, objPtr, &l);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * UpdateStringOfInt --
- *
- * Update the string representation for an integer object. Note: This
- * function does not free an existing old string rep so storage will be
- * lost if this has not already been done.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The object's string is set to a valid string that results from the
- * int-to-string conversion.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-UpdateStringOfInt(
- register Tcl_Obj *objPtr) /* Int object whose string rep to update. */
-{
- char buffer[TCL_INTEGER_SPACE];
- register int len;
-
- len = TclFormatInt(buffer, objPtr->internalRep.longValue);
-
- objPtr->bytes = ckalloc(len + 1);
- memcpy(objPtr->bytes, buffer, (unsigned) len + 1);
- objPtr->length = len;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_NewLongObj --
- *
- * If a client is compiled with TCL_MEM_DEBUG defined, calls to
- * Tcl_NewLongObj to create a new long integer object end up calling the
- * debugging function Tcl_DbNewLongObj instead.
- *
- * Otherwise, if the client is compiled without TCL_MEM_DEBUG defined,
- * calls to Tcl_NewLongObj result in a call to one of the two
- * Tcl_NewLongObj implementations below. We provide two implementations
- * so that the Tcl core can be compiled to do memory debugging of the
- * core even if a client does not request it for itself.
- *
- * Integer and long integer objects share the same "integer" type
- * implementation. We store all integers as longs and Tcl_GetIntFromObj
- * checks whether the current value of the long can be represented by an
- * int.
- *
- * Results:
- * The newly created object is returned. This object will have an invalid
- * string representation. The returned object has ref count 0.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-#ifdef TCL_MEM_DEBUG
-#undef Tcl_NewLongObj
-
-Tcl_Obj *
-Tcl_NewLongObj(
- register long longValue) /* Long integer used to initialize the
- * new object. */
-{
- return Tcl_DbNewLongObj(longValue, "unknown", 0);
-}
-
-#else /* if not TCL_MEM_DEBUG */
-
-Tcl_Obj *
-Tcl_NewLongObj(
- register long longValue) /* Long integer used to initialize the
- * new object. */
-{
- register Tcl_Obj *objPtr;
-
- TclNewLongObj(objPtr, longValue);
- return objPtr;
-}
-#endif /* if TCL_MEM_DEBUG */
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_DbNewLongObj --
- *
- * If a client is compiled with TCL_MEM_DEBUG defined, calls to
- * Tcl_NewIntObj and Tcl_NewLongObj to create new integer or long integer
- * objects end up calling the debugging function Tcl_DbNewLongObj
- * instead. We provide two implementations of Tcl_DbNewLongObj so that
- * whether the Tcl core is compiled to do memory debugging of the core is
- * independent of whether a client requests debugging for itself.
- *
- * When the core is compiled with TCL_MEM_DEBUG defined, Tcl_DbNewLongObj
- * calls Tcl_DbCkalloc directly with the file name and line number from
- * its caller. This simplifies debugging since then the [memory active]
- * command will report the caller's file name and line number when
- * reporting objects that haven't been freed.
- *
- * Otherwise, when the core is compiled without TCL_MEM_DEBUG defined,
- * this function just returns the result of calling Tcl_NewLongObj.
- *
- * Results:
- * The newly created long integer object is returned. This object will
- * have an invalid string representation. The returned object has ref
- * count 0.
- *
- * Side effects:
- * Allocates memory.
- *
- *----------------------------------------------------------------------
- */
-
-#ifdef TCL_MEM_DEBUG
-
-Tcl_Obj *
-Tcl_DbNewLongObj(
- register long longValue, /* Long integer used to initialize the new
- * object. */
- const char *file, /* The name of the source file calling this
- * function; used for debugging. */
- int line) /* Line number in the source file; used for
- * debugging. */
-{
- register Tcl_Obj *objPtr;
-
- TclDbNewObj(objPtr, file, line);
- objPtr->bytes = NULL;
-
- objPtr->internalRep.longValue = longValue;
- objPtr->typePtr = &tclIntType;
- return objPtr;
-}
-
-#else /* if not TCL_MEM_DEBUG */
-
-Tcl_Obj *
-Tcl_DbNewLongObj(
- register long longValue, /* Long integer used to initialize the new
- * object. */
- const char *file, /* The name of the source file calling this
- * function; used for debugging. */
- int line) /* Line number in the source file; used for
- * debugging. */
-{
- return Tcl_NewLongObj(longValue);
-}
-#endif /* TCL_MEM_DEBUG */
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_SetLongObj --
- *
- * Modify an object to be an integer object and to have the specified
- * long integer value.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The object's old string rep, if any, is freed. Also, any old internal
- * rep is freed.
- *
- *----------------------------------------------------------------------
- */
-
-void
-Tcl_SetLongObj(
- register Tcl_Obj *objPtr, /* Object whose internal rep to init. */
- register long longValue) /* Long integer used to initialize the
- * object's value. */
-{
- if (Tcl_IsShared(objPtr)) {
- Tcl_Panic("%s called with shared object", "Tcl_SetLongObj");
- }
-
- TclSetLongObj(objPtr, longValue);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_GetLongFromObj --
- *
- * Attempt to return an long integer from the Tcl object "objPtr". If the
- * object is not already an int object, an attempt will be made to
- * convert it to one.
- *
- * Results:
- * The return value is a standard Tcl object result. If an error occurs
- * during conversion, an error message is left in the interpreter's
- * result unless "interp" is NULL.
- *
- * Side effects:
- * If the object is not already an int object, the conversion will free
- * any old internal representation.
- *
- *----------------------------------------------------------------------
- */
-
-int
-Tcl_GetLongFromObj(
- Tcl_Interp *interp, /* Used for error reporting if not NULL. */
- register Tcl_Obj *objPtr, /* The object from which to get a long. */
- register long *longPtr) /* Place to store resulting long. */
-{
- do {
- if (objPtr->typePtr == &tclIntType) {
- *longPtr = objPtr->internalRep.longValue;
- return TCL_OK;
- }
-#ifndef TCL_WIDE_INT_IS_LONG
- if (objPtr->typePtr == &tclWideIntType) {
- /*
- * We return any integer in the range -ULONG_MAX to ULONG_MAX
- * converted to a long, ignoring overflow. The rule preserves
- * existing semantics for conversion of integers on input, but
- * avoids inadvertent demotion of wide integers to 32-bit ones in
- * the internal rep.
- */
-
- Tcl_WideInt w = objPtr->internalRep.wideValue;
-
- if (w >= -(Tcl_WideInt)(ULONG_MAX)
- && w <= (Tcl_WideInt)(ULONG_MAX)) {
- *longPtr = Tcl_WideAsLong(w);
- return TCL_OK;
- }
- goto tooLarge;
- }
-#endif
- if (objPtr->typePtr == &tclDoubleType) {
- if (interp != NULL) {
- Tcl_SetObjResult(interp, Tcl_ObjPrintf(
- "expected integer but got \"%s\"",
- Tcl_GetString(objPtr)));
- Tcl_SetErrorCode(interp, "TCL", "VALUE", "INTEGER", NULL);
- }
- return TCL_ERROR;
- }
- if (objPtr->typePtr == &tclBignumType) {
- /*
- * Must check for those bignum values that can fit in a long, even
- * when auto-narrowing is enabled. Only those values in the signed
- * long range get auto-narrowed to tclIntType, while all the
- * values in the unsigned long range will fit in a long.
- */
-
- mp_int big;
-
- UNPACK_BIGNUM(objPtr, big);
- if ((size_t) big.used <= (CHAR_BIT * sizeof(long) + DIGIT_BIT - 1)
- / DIGIT_BIT) {
- unsigned long value = 0, numBytes = sizeof(long);
- long scratch;
- unsigned char *bytes = (unsigned char *) &scratch;
-
- if (mp_to_unsigned_bin_n(&big, bytes, &numBytes) == MP_OKAY) {
- while (numBytes-- > 0) {
- value = (value << CHAR_BIT) | *bytes++;
- }
- if (big.sign) {
- *longPtr = - (long) value;
- } else {
- *longPtr = (long) value;
- }
- return TCL_OK;
- }
- }
-#ifndef TCL_WIDE_INT_IS_LONG
- tooLarge:
-#endif
- if (interp != NULL) {
- const char *s = "integer value too large to represent";
- Tcl_Obj *msg = Tcl_NewStringObj(s, -1);
-
- Tcl_SetObjResult(interp, msg);
- Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW", s, NULL);
- }
- return TCL_ERROR;
- }
- } while (TclParseNumber(interp, objPtr, "integer", NULL, -1, NULL,
- TCL_PARSE_INTEGER_ONLY)==TCL_OK);
- return TCL_ERROR;
-}
-#ifndef TCL_WIDE_INT_IS_LONG
-
-/*
- *----------------------------------------------------------------------
- *
- * UpdateStringOfWideInt --
- *
- * Update the string representation for a wide integer object. Note: this
- * function does not free an existing old string rep so storage will be
- * lost if this has not already been done.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The object's string is set to a valid string that results from the
- * wideInt-to-string conversion.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-UpdateStringOfWideInt(
- register Tcl_Obj *objPtr) /* Int object whose string rep to update. */
-{
- char buffer[TCL_INTEGER_SPACE+2];
- register unsigned len;
- register Tcl_WideInt wideVal = objPtr->internalRep.wideValue;
-
- /*
- * Note that sprintf will generate a compiler warning under Mingw claiming
- * %I64 is an unknown format specifier. Just ignore this warning. We can't
- * use %L as the format specifier since that gets printed as a 32 bit
- * value.
- */
-
- sprintf(buffer, "%" TCL_LL_MODIFIER "d", wideVal);
- len = strlen(buffer);
- objPtr->bytes = ckalloc(len + 1);
- memcpy(objPtr->bytes, buffer, len + 1);
- objPtr->length = len;
-}
-#endif /* !TCL_WIDE_INT_IS_LONG */
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_NewWideIntObj --
- *
- * If a client is compiled with TCL_MEM_DEBUG defined, calls to
- * Tcl_NewWideIntObj to create a new 64-bit integer object end up calling
- * the debugging function Tcl_DbNewWideIntObj instead.
- *
- * Otherwise, if the client is compiled without TCL_MEM_DEBUG defined,
- * calls to Tcl_NewWideIntObj result in a call to one of the two
- * Tcl_NewWideIntObj implementations below. We provide two
- * implementations so that the Tcl core can be compiled to do memory
- * debugging of the core even if a client does not request it for itself.
- *
- * Results:
- * The newly created object is returned. This object will have an invalid
- * string representation. The returned object has ref count 0.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-#ifdef TCL_MEM_DEBUG
-#undef Tcl_NewWideIntObj
-
-Tcl_Obj *
-Tcl_NewWideIntObj(
- register Tcl_WideInt wideValue)
- /* Wide integer used to initialize the new
- * object. */
-{
- return Tcl_DbNewWideIntObj(wideValue, "unknown", 0);
-}
-
-#else /* if not TCL_MEM_DEBUG */
-
-Tcl_Obj *
-Tcl_NewWideIntObj(
- register Tcl_WideInt wideValue)
- /* Wide integer used to initialize the new
- * object. */
-{
- register Tcl_Obj *objPtr;
-
- TclNewObj(objPtr);
- Tcl_SetWideIntObj(objPtr, wideValue);
- return objPtr;
-}
-#endif /* if TCL_MEM_DEBUG */
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_DbNewWideIntObj --
- *
- * If a client is compiled with TCL_MEM_DEBUG defined, calls to
- * Tcl_NewWideIntObj to create new wide integer end up calling the
- * debugging function Tcl_DbNewWideIntObj instead. We provide two
- * implementations of Tcl_DbNewWideIntObj so that whether the Tcl core is
- * compiled to do memory debugging of the core is independent of whether
- * a client requests debugging for itself.
- *
- * When the core is compiled with TCL_MEM_DEBUG defined,
- * Tcl_DbNewWideIntObj calls Tcl_DbCkalloc directly with the file name
- * and line number from its caller. This simplifies debugging since then
- * the checkmem command will report the caller's file name and line
- * number when reporting objects that haven't been freed.
- *
- * Otherwise, when the core is compiled without TCL_MEM_DEBUG defined,
- * this function just returns the result of calling Tcl_NewWideIntObj.
- *
- * Results:
- * The newly created wide integer object is returned. This object will
- * have an invalid string representation. The returned object has ref
- * count 0.
- *
- * Side effects:
- * Allocates memory.
- *
- *----------------------------------------------------------------------
- */
-
-#ifdef TCL_MEM_DEBUG
-
-Tcl_Obj *
-Tcl_DbNewWideIntObj(
- register Tcl_WideInt wideValue,
- /* Wide integer used to initialize the new
- * object. */
- const char *file, /* The name of the source file calling this
- * function; used for debugging. */
- int line) /* Line number in the source file; used for
- * debugging. */
-{
- register Tcl_Obj *objPtr;
-
- TclDbNewObj(objPtr, file, line);
- Tcl_SetWideIntObj(objPtr, wideValue);
- return objPtr;
-}
-
-#else /* if not TCL_MEM_DEBUG */
-
-Tcl_Obj *
-Tcl_DbNewWideIntObj(
- register Tcl_WideInt wideValue,
- /* Long integer used to initialize the new
- * object. */
- const char *file, /* The name of the source file calling this
- * function; used for debugging. */
- int line) /* Line number in the source file; used for
- * debugging. */
-{
- return Tcl_NewWideIntObj(wideValue);
-}
-#endif /* TCL_MEM_DEBUG */
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_SetWideIntObj --
- *
- * Modify an object to be a wide integer object and to have the specified
- * wide integer value.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The object's old string rep, if any, is freed. Also, any old internal
- * rep is freed.
- *
- *----------------------------------------------------------------------
- */
-
-void
-Tcl_SetWideIntObj(
- register Tcl_Obj *objPtr, /* Object w. internal rep to init. */
- register Tcl_WideInt wideValue)
- /* Wide integer used to initialize the
- * object's value. */
-{
- if (Tcl_IsShared(objPtr)) {
- Tcl_Panic("%s called with shared object", "Tcl_SetWideIntObj");
- }
-
- if ((wideValue >= (Tcl_WideInt) LONG_MIN)
- && (wideValue <= (Tcl_WideInt) LONG_MAX)) {
- TclSetLongObj(objPtr, (long) wideValue);
- } else {
-#ifndef TCL_WIDE_INT_IS_LONG
- TclSetWideIntObj(objPtr, wideValue);
-#else
- mp_int big;
-
- TclBNInitBignumFromWideInt(&big, wideValue);
- Tcl_SetBignumObj(objPtr, &big);
-#endif
- }
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_GetWideIntFromObj --
- *
- * Attempt to return a wide integer from the Tcl object "objPtr". If the
- * object is not already a wide int object, an attempt will be made to
- * convert it to one.
- *
- * Results:
- * The return value is a standard Tcl object result. If an error occurs
- * during conversion, an error message is left in the interpreter's
- * result unless "interp" is NULL.
- *
- * Side effects:
- * If the object is not already an int object, the conversion will free
- * any old internal representation.
- *
- *----------------------------------------------------------------------
- */
-
-int
-Tcl_GetWideIntFromObj(
- Tcl_Interp *interp, /* Used for error reporting if not NULL. */
- register Tcl_Obj *objPtr, /* Object from which to get a wide int. */
- register Tcl_WideInt *wideIntPtr)
- /* Place to store resulting long. */
-{
- do {
-#ifndef TCL_WIDE_INT_IS_LONG
- if (objPtr->typePtr == &tclWideIntType) {
- *wideIntPtr = objPtr->internalRep.wideValue;
- return TCL_OK;
- }
-#endif
- if (objPtr->typePtr == &tclIntType) {
- *wideIntPtr = (Tcl_WideInt) objPtr->internalRep.longValue;
- return TCL_OK;
- }
- if (objPtr->typePtr == &tclDoubleType) {
- if (interp != NULL) {
- Tcl_SetObjResult(interp, Tcl_ObjPrintf(
- "expected integer but got \"%s\"",
- Tcl_GetString(objPtr)));
- Tcl_SetErrorCode(interp, "TCL", "VALUE", "INTEGER", NULL);
- }
- return TCL_ERROR;
- }
- if (objPtr->typePtr == &tclBignumType) {
- /*
- * Must check for those bignum values that can fit in a
- * Tcl_WideInt, even when auto-narrowing is enabled.
- */
-
- mp_int big;
-
- UNPACK_BIGNUM(objPtr, big);
- if ((size_t) big.used <= (CHAR_BIT * sizeof(Tcl_WideInt)
- + DIGIT_BIT - 1) / DIGIT_BIT) {
- Tcl_WideUInt value = 0;
- unsigned long numBytes = sizeof(Tcl_WideInt);
- Tcl_WideInt scratch;
- unsigned char *bytes = (unsigned char *) &scratch;
-
- if (mp_to_unsigned_bin_n(&big, bytes, &numBytes) == MP_OKAY) {
- while (numBytes-- > 0) {
- value = (value << CHAR_BIT) | *bytes++;
- }
- if (big.sign) {
- *wideIntPtr = - (Tcl_WideInt) value;
- } else {
- *wideIntPtr = (Tcl_WideInt) value;
- }
- return TCL_OK;
- }
- }
- if (interp != NULL) {
- const char *s = "integer value too large to represent";
- Tcl_Obj *msg = Tcl_NewStringObj(s, -1);
-
- Tcl_SetObjResult(interp, msg);
- Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW", s, NULL);
- }
- return TCL_ERROR;
- }
- } while (TclParseNumber(interp, objPtr, "integer", NULL, -1, NULL,
- TCL_PARSE_INTEGER_ONLY)==TCL_OK);
- return TCL_ERROR;
-}
-#ifndef TCL_WIDE_INT_IS_LONG
-
-/*
- *----------------------------------------------------------------------
- *
- * SetWideIntFromAny --
- *
- * Attempts to force the internal representation for a Tcl object to
- * tclWideIntType, specifically.
- *
- * Results:
- * The return value is a standard object Tcl result. If an error occurs
- * during conversion, an error message is left in the interpreter's
- * result unless "interp" is NULL.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-SetWideIntFromAny(
- Tcl_Interp *interp, /* Tcl interpreter */
- Tcl_Obj *objPtr) /* Pointer to the object to convert */
-{
- Tcl_WideInt w;
- return Tcl_GetWideIntFromObj(interp, objPtr, &w);
-}
-#endif /* !TCL_WIDE_INT_IS_LONG */
-
-/*
- *----------------------------------------------------------------------
- *
- * FreeBignum --
- *
- * This function frees the internal rep of a bignum.
- *
- * Results:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-FreeBignum(
- Tcl_Obj *objPtr)
-{
- mp_int toFree; /* Bignum to free */
-
- UNPACK_BIGNUM(objPtr, toFree);
- mp_clear(&toFree);
- if (PTR2INT(objPtr->internalRep.twoPtrValue.ptr2) < 0) {
- ckfree(objPtr->internalRep.twoPtrValue.ptr1);
- }
- objPtr->typePtr = NULL;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * DupBignum --
- *
- * This function duplicates the internal rep of a bignum.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The destination object receies a copy of the source object
- *
- *----------------------------------------------------------------------
- */
-
-static void
-DupBignum(
- Tcl_Obj *srcPtr,
- Tcl_Obj *copyPtr)
-{
- mp_int bignumVal;
- mp_int bignumCopy;
-
- copyPtr->typePtr = &tclBignumType;
- UNPACK_BIGNUM(srcPtr, bignumVal);
- if (mp_init_copy(&bignumCopy, &bignumVal) != MP_OKAY) {
- Tcl_Panic("initialization failure in DupBignum");
- }
- PACK_BIGNUM(bignumCopy, copyPtr);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * UpdateStringOfBignum --
- *
- * This function updates the string representation of a bignum object.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The object's string is set to whatever results from the bignum-
- * to-string conversion.
- *
- * The object's existing string representation is NOT freed; memory will leak
- * if the string rep is still valid at the time this function is called.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-UpdateStringOfBignum(
- Tcl_Obj *objPtr)
-{
- mp_int bignumVal;
- int size;
- int status;
- char *stringVal;
-
- UNPACK_BIGNUM(objPtr, bignumVal);
- status = mp_radix_size(&bignumVal, 10, &size);
- if (status != MP_OKAY) {
- Tcl_Panic("radix size failure in UpdateStringOfBignum");
- }
- if (size == 3) {
- /*
- * mp_radix_size() returns 3 when more than INT_MAX bytes would be
- * needed to hold the string rep (because mp_radix_size ignores
- * integer overflow issues). When we know the string rep will be more
- * than 3, we can conclude the string rep would overflow our string
- * length limits.
- *
- * Note that so long as we enforce our bignums to the size that fits
- * in a packed bignum, this branch will never be taken.
- */
-
- Tcl_Panic("UpdateStringOfBignum: string length limit exceeded");
- }
- stringVal = ckalloc(size);
- status = mp_toradix_n(&bignumVal, stringVal, 10, size);
- if (status != MP_OKAY) {
- Tcl_Panic("conversion failure in UpdateStringOfBignum");
- }
- objPtr->bytes = stringVal;
- objPtr->length = size - 1; /* size includes a trailing NUL byte. */
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_NewBignumObj --
- *
- * Creates an initializes a bignum object.
- *
- * Results:
- * Returns the newly created object.
- *
- * Side effects:
- * The bignum value is cleared, since ownership has transferred to Tcl.
- *
- *----------------------------------------------------------------------
- */
-
-#ifdef TCL_MEM_DEBUG
-#undef Tcl_NewBignumObj
-
-Tcl_Obj *
-Tcl_NewBignumObj(
- mp_int *bignumValue)
-{
- return Tcl_DbNewBignumObj(bignumValue, "unknown", 0);
-}
-#else
-Tcl_Obj *
-Tcl_NewBignumObj(
- mp_int *bignumValue)
-{
- Tcl_Obj *objPtr;
-
- TclNewObj(objPtr);
- Tcl_SetBignumObj(objPtr, bignumValue);
- return objPtr;
-}
-#endif
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_DbNewBignumObj --
- *
- * This function is normally called when debugging: that is, when
- * TCL_MEM_DEBUG is defined. It constructs a bignum object, recording the
- * creation point so that [memory active] can report it.
- *
- * Results:
- * Returns the newly created object.
- *
- * Side effects:
- * The bignum value is cleared, since ownership has transferred to Tcl.
- *
- *----------------------------------------------------------------------
- */
-
-#ifdef TCL_MEM_DEBUG
-Tcl_Obj *
-Tcl_DbNewBignumObj(
- mp_int *bignumValue,
- const char *file,
- int line)
-{
- Tcl_Obj *objPtr;
-
- TclDbNewObj(objPtr, file, line);
- Tcl_SetBignumObj(objPtr, bignumValue);
- return objPtr;
-}
-#else
-Tcl_Obj *
-Tcl_DbNewBignumObj(
- mp_int *bignumValue,
- const char *file,
- int line)
-{
- return Tcl_NewBignumObj(bignumValue);
-}
-#endif
-
-/*
- *----------------------------------------------------------------------
- *
- * GetBignumFromObj --
- *
- * This function retrieves a 'bignum' value from a Tcl object, converting
- * the object if necessary. Either copies or transfers the mp_int value
- * depending on the copy flag value passed in.
- *
- * Results:
- * Returns TCL_OK if the conversion is successful, TCL_ERROR otherwise.
- *
- * Side effects:
- * A copy of bignum is stored in *bignumValue, which is expected to be
- * uninitialized or cleared. If conversion fails, and the 'interp'
- * argument is not NULL, an error message is stored in the interpreter
- * result.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-GetBignumFromObj(
- Tcl_Interp *interp, /* Tcl interpreter for error reporting */
- Tcl_Obj *objPtr, /* Object to read */
- int copy, /* Whether to copy the returned bignum value */
- mp_int *bignumValue) /* Returned bignum value. */
-{
- do {
- if (objPtr->typePtr == &tclBignumType) {
- if (copy || Tcl_IsShared(objPtr)) {
- mp_int temp;
-
- UNPACK_BIGNUM(objPtr, temp);
- mp_init_copy(bignumValue, &temp);
- } else {
- UNPACK_BIGNUM(objPtr, *bignumValue);
- objPtr->internalRep.twoPtrValue.ptr1 = NULL;
- objPtr->internalRep.twoPtrValue.ptr2 = NULL;
- objPtr->typePtr = NULL;
- if (objPtr->bytes == NULL) {
- TclInitStringRep(objPtr, tclEmptyStringRep, 0);
- }
- }
- return TCL_OK;
- }
- if (objPtr->typePtr == &tclIntType) {
- TclBNInitBignumFromLong(bignumValue, objPtr->internalRep.longValue);
- return TCL_OK;
- }
-#ifndef TCL_WIDE_INT_IS_LONG
- if (objPtr->typePtr == &tclWideIntType) {
- TclBNInitBignumFromWideInt(bignumValue,
- objPtr->internalRep.wideValue);
- return TCL_OK;
- }
-#endif
- if (objPtr->typePtr == &tclDoubleType) {
- if (interp != NULL) {
- Tcl_SetObjResult(interp, Tcl_ObjPrintf(
- "expected integer but got \"%s\"",
- Tcl_GetString(objPtr)));
- Tcl_SetErrorCode(interp, "TCL", "VALUE", "INTEGER", NULL);
- }
- return TCL_ERROR;
- }
- } while (TclParseNumber(interp, objPtr, "integer", NULL, -1, NULL,
- TCL_PARSE_INTEGER_ONLY)==TCL_OK);
- return TCL_ERROR;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_GetBignumFromObj --
- *
- * This function retrieves a 'bignum' value from a Tcl object, converting
- * the object if necessary.
- *
- * Results:
- * Returns TCL_OK if the conversion is successful, TCL_ERROR otherwise.
- *
- * Side effects:
- * A copy of bignum is stored in *bignumValue, which is expected to be
- * uninitialized or cleared. If conversion fails, an the 'interp'
- * argument is not NULL, an error message is stored in the interpreter
- * result.
- *
- * It is expected that the caller will NOT have invoked mp_init on the
- * bignum value before passing it in. Tcl will initialize the mp_int as
- * it sets the value. The value is a copy of the value in objPtr, so it
- * becomes the responsibility of the caller to call mp_clear on it.
- *
- *----------------------------------------------------------------------
- */
-
-int
-Tcl_GetBignumFromObj(
- Tcl_Interp *interp, /* Tcl interpreter for error reporting */
- Tcl_Obj *objPtr, /* Object to read */
- mp_int *bignumValue) /* Returned bignum value. */
-{
- return GetBignumFromObj(interp, objPtr, 1, bignumValue);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_TakeBignumFromObj --
- *
- * This function retrieves a 'bignum' value from a Tcl object, converting
- * the object if necessary.
- *
- * Results:
- * Returns TCL_OK if the conversion is successful, TCL_ERROR otherwise.
- *
- * Side effects:
- * A copy of bignum is stored in *bignumValue, which is expected to be
- * uninitialized or cleared. If conversion fails, an the 'interp'
- * argument is not NULL, an error message is stored in the interpreter
- * result.
- *
- * It is expected that the caller will NOT have invoked mp_init on the
- * bignum value before passing it in. Tcl will initialize the mp_int as
- * it sets the value. The value is transferred from the internals of
- * objPtr to the caller, passing responsibility of the caller to call
- * mp_clear on it. The objPtr is cleared to hold an empty value.
- *
- *----------------------------------------------------------------------
- */
-
-int
-Tcl_TakeBignumFromObj(
- Tcl_Interp *interp, /* Tcl interpreter for error reporting */
- Tcl_Obj *objPtr, /* Object to read */
- mp_int *bignumValue) /* Returned bignum value. */
-{
- return GetBignumFromObj(interp, objPtr, 0, bignumValue);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_SetBignumObj --
- *
- * This function sets the value of a Tcl_Obj to a large integer.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Object value is stored. The bignum value is cleared, since ownership
- * has transferred to Tcl.
- *
- *----------------------------------------------------------------------
- */
-
-void
-Tcl_SetBignumObj(
- Tcl_Obj *objPtr, /* Object to set */
- mp_int *bignumValue) /* Value to store */
-{
- if (Tcl_IsShared(objPtr)) {
- Tcl_Panic("%s called with shared object", "Tcl_SetBignumObj");
- }
- if ((size_t) bignumValue->used
- <= (CHAR_BIT * sizeof(long) + DIGIT_BIT - 1) / DIGIT_BIT) {
- unsigned long value = 0, numBytes = sizeof(long);
- long scratch;
- unsigned char *bytes = (unsigned char *) &scratch;
-
- if (mp_to_unsigned_bin_n(bignumValue, bytes, &numBytes) != MP_OKAY) {
- goto tooLargeForLong;
- }
- while (numBytes-- > 0) {
- value = (value << CHAR_BIT) | *bytes++;
- }
- if (value > (((~(unsigned long)0) >> 1) + bignumValue->sign)) {
- goto tooLargeForLong;
- }
- if (bignumValue->sign) {
- TclSetLongObj(objPtr, -(long)value);
- } else {
- TclSetLongObj(objPtr, (long)value);
- }
- mp_clear(bignumValue);
- return;
- }
- tooLargeForLong:
-#ifndef TCL_WIDE_INT_IS_LONG
- if ((size_t) bignumValue->used
- <= (CHAR_BIT * sizeof(Tcl_WideInt) + DIGIT_BIT - 1) / DIGIT_BIT) {
- Tcl_WideUInt value = 0;
- unsigned long numBytes = sizeof(Tcl_WideInt);
- Tcl_WideInt scratch;
- unsigned char *bytes = (unsigned char *)&scratch;
-
- if (mp_to_unsigned_bin_n(bignumValue, bytes, &numBytes) != MP_OKAY) {
- goto tooLargeForWide;
- }
- while (numBytes-- > 0) {
- value = (value << CHAR_BIT) | *bytes++;
- }
- if (value > (((~(Tcl_WideUInt)0) >> 1) + bignumValue->sign)) {
- goto tooLargeForWide;
- }
- if (bignumValue->sign) {
- TclSetWideIntObj(objPtr, -(Tcl_WideInt)value);
- } else {
- TclSetWideIntObj(objPtr, (Tcl_WideInt)value);
- }
- mp_clear(bignumValue);
- return;
- }
- tooLargeForWide:
-#endif
- TclInvalidateStringRep(objPtr);
- TclFreeIntRep(objPtr);
- TclSetBignumIntRep(objPtr, bignumValue);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclSetBignumIntRep --
- *
- * Install a bignum into the internal representation of an object.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Object internal representation is updated and object type is set. The
- * bignum value is cleared, since ownership has transferred to the
- * object.
- *
- *----------------------------------------------------------------------
- */
-
-void
-TclSetBignumIntRep(
- Tcl_Obj *objPtr,
- mp_int *bignumValue)
-{
- objPtr->typePtr = &tclBignumType;
- PACK_BIGNUM(*bignumValue, objPtr);
-
- /*
- * Clear the mp_int value.
- *
- * Don't call mp_clear() because it would free the digit array we just
- * packed into the Tcl_Obj.
- */
-
- bignumValue->dp = NULL;
- bignumValue->alloc = bignumValue->used = 0;
- bignumValue->sign = MP_NEG;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclGetNumberFromObj --
- *
- * Extracts a number (of any possible numeric type) from an object.
- *
- * Results:
- * Whether the extraction worked. The type is stored in the variable
- * referred to by the typePtr argument, and a pointer to the
- * representation is stored in the variable referred to by the
- * clientDataPtr.
- *
- * Side effects:
- * Can allocate thread-specific data for handling the copy-out space for
- * bignums; this space is shared within a thread.
- *
- *----------------------------------------------------------------------
- */
-
-int
-TclGetNumberFromObj(
- Tcl_Interp *interp,
- Tcl_Obj *objPtr,
- ClientData *clientDataPtr,
- int *typePtr)
-{
- do {
- if (objPtr->typePtr == &tclDoubleType) {
- if (TclIsNaN(objPtr->internalRep.doubleValue)) {
- *typePtr = TCL_NUMBER_NAN;
- } else {
- *typePtr = TCL_NUMBER_DOUBLE;
- }
- *clientDataPtr = &objPtr->internalRep.doubleValue;
- return TCL_OK;
- }
- if (objPtr->typePtr == &tclIntType) {
- *typePtr = TCL_NUMBER_LONG;
- *clientDataPtr = &objPtr->internalRep.longValue;
- return TCL_OK;
- }
-#ifndef TCL_WIDE_INT_IS_LONG
- if (objPtr->typePtr == &tclWideIntType) {
- *typePtr = TCL_NUMBER_WIDE;
- *clientDataPtr = &objPtr->internalRep.wideValue;
- return TCL_OK;
- }
-#endif
- if (objPtr->typePtr == &tclBignumType) {
- static Tcl_ThreadDataKey bignumKey;
- mp_int *bigPtr = Tcl_GetThreadData(&bignumKey,
- (int) sizeof(mp_int));
-
- UNPACK_BIGNUM(objPtr, *bigPtr);
- *typePtr = TCL_NUMBER_BIG;
- *clientDataPtr = bigPtr;
- return TCL_OK;
- }
- } while (TCL_OK ==
- TclParseNumber(interp, objPtr, "number", NULL, -1, NULL, 0));
- return TCL_ERROR;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_DbIncrRefCount --
- *
- * This function is normally called when debugging: i.e., when
- * TCL_MEM_DEBUG is defined. This checks to see whether or not the memory
- * has been freed before incrementing the ref count.
- *
- * When TCL_MEM_DEBUG is not defined, this function just increments the
- * reference count of the object.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The object's ref count is incremented.
- *
- *----------------------------------------------------------------------
- */
-
-void
-Tcl_DbIncrRefCount(
- register Tcl_Obj *objPtr, /* The object we are registering a reference
- * to. */
- const char *file, /* The name of the source file calling this
- * function; used for debugging. */
- int line) /* Line number in the source file; used for
- * debugging. */
-{
-#ifdef TCL_MEM_DEBUG
- if (objPtr->refCount == 0x61616161) {
- fprintf(stderr, "file = %s, line = %d\n", file, line);
- fflush(stderr);
- Tcl_Panic("incrementing refCount of previously disposed object");
- }
-
-# ifdef TCL_THREADS
- /*
- * Check to make sure that the Tcl_Obj was allocated by the current
- * thread. Don't do this check when shutting down since thread local
- * storage can be finalized before the last Tcl_Obj is freed.
- */
-
- if (!TclInExit()) {
- ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
- Tcl_HashTable *tablePtr = tsdPtr->objThreadMap;
- Tcl_HashEntry *hPtr;
-
- if (!tablePtr) {
- Tcl_Panic("object table not initialized");
- }
- hPtr = Tcl_FindHashEntry(tablePtr, objPtr);
- if (!hPtr) {
- Tcl_Panic("Trying to %s of Tcl_Obj allocated in another thread",
- "incr ref count");
- }
- }
-# endif /* TCL_THREADS */
-#endif /* TCL_MEM_DEBUG */
- ++(objPtr)->refCount;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_DbDecrRefCount --
- *
- * This function is normally called when debugging: i.e., when
- * TCL_MEM_DEBUG is defined. This checks to see whether or not the memory
- * has been freed before decrementing the ref count.
- *
- * When TCL_MEM_DEBUG is not defined, this function just decrements the
- * reference count of the object.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The object's ref count is incremented.
- *
- *----------------------------------------------------------------------
- */
-
-void
-Tcl_DbDecrRefCount(
- register Tcl_Obj *objPtr, /* The object we are releasing a reference
- * to. */
- const char *file, /* The name of the source file calling this
- * function; used for debugging. */
- int line) /* Line number in the source file; used for
- * debugging. */
-{
-#ifdef TCL_MEM_DEBUG
- if (objPtr->refCount == 0x61616161) {
- fprintf(stderr, "file = %s, line = %d\n", file, line);
- fflush(stderr);
- Tcl_Panic("decrementing refCount of previously disposed object");
- }
-
-# ifdef TCL_THREADS
- /*
- * Check to make sure that the Tcl_Obj was allocated by the current
- * thread. Don't do this check when shutting down since thread local
- * storage can be finalized before the last Tcl_Obj is freed.
- */
-
- if (!TclInExit()) {
- ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
- Tcl_HashTable *tablePtr = tsdPtr->objThreadMap;
- Tcl_HashEntry *hPtr;
-
- if (!tablePtr) {
- Tcl_Panic("object table not initialized");
- }
- hPtr = Tcl_FindHashEntry(tablePtr, objPtr);
- if (!hPtr) {
- Tcl_Panic("Trying to %s of Tcl_Obj allocated in another thread",
- "decr ref count");
- }
- }
-# endif /* TCL_THREADS */
-#endif /* TCL_MEM_DEBUG */
-
- if (objPtr->refCount-- <= 1) {
- TclFreeObj(objPtr);
- }
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_DbIsShared --
- *
- * This function is normally called when debugging: i.e., when
- * TCL_MEM_DEBUG is defined. It tests whether the object has a ref count
- * greater than one.
- *
- * When TCL_MEM_DEBUG is not defined, this function just tests if the
- * object has a ref count greater than one.
- *
- * Results:
- * None.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-int
-Tcl_DbIsShared(
- register Tcl_Obj *objPtr, /* The object to test for being shared. */
- const char *file, /* The name of the source file calling this
- * function; used for debugging. */
- int line) /* Line number in the source file; used for
- * debugging. */
-{
-#ifdef TCL_MEM_DEBUG
- if (objPtr->refCount == 0x61616161) {
- fprintf(stderr, "file = %s, line = %d\n", file, line);
- fflush(stderr);
- Tcl_Panic("checking whether previously disposed object is shared");
- }
-
-# ifdef TCL_THREADS
- /*
- * Check to make sure that the Tcl_Obj was allocated by the current
- * thread. Don't do this check when shutting down since thread local
- * storage can be finalized before the last Tcl_Obj is freed.
- */
-
- if (!TclInExit()) {
- ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
- Tcl_HashTable *tablePtr = tsdPtr->objThreadMap;
- Tcl_HashEntry *hPtr;
-
- if (!tablePtr) {
- Tcl_Panic("object table not initialized");
- }
- hPtr = Tcl_FindHashEntry(tablePtr, objPtr);
- if (!hPtr) {
- Tcl_Panic("Trying to %s of Tcl_Obj allocated in another thread",
- "check shared status");
- }
- }
-# endif /* TCL_THREADS */
-#endif /* TCL_MEM_DEBUG */
-
-#ifdef TCL_COMPILE_STATS
- Tcl_MutexLock(&tclObjMutex);
- if ((objPtr)->refCount <= 1) {
- tclObjsShared[1]++;
- } else if ((objPtr)->refCount < TCL_MAX_SHARED_OBJ_STATS) {
- tclObjsShared[(objPtr)->refCount]++;
- } else {
- tclObjsShared[0]++;
- }
- Tcl_MutexUnlock(&tclObjMutex);
-#endif /* TCL_COMPILE_STATS */
-
- return ((objPtr)->refCount > 1);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_InitObjHashTable --
- *
- * Given storage for a hash table, set up the fields to prepare the hash
- * table for use, the keys are Tcl_Obj *.
- *
- * Results:
- * None.
- *
- * Side effects:
- * TablePtr is now ready to be passed to Tcl_FindHashEntry and
- * Tcl_CreateHashEntry.
- *
- *----------------------------------------------------------------------
- */
-
-void
-Tcl_InitObjHashTable(
- register Tcl_HashTable *tablePtr)
- /* Pointer to table record, which is supplied
- * by the caller. */
-{
- Tcl_InitCustomHashTable(tablePtr, TCL_CUSTOM_PTR_KEYS,
- &tclObjHashKeyType);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * AllocObjEntry --
- *
- * Allocate space for a Tcl_HashEntry containing the Tcl_Obj * key.
- *
- * Results:
- * The return value is a pointer to the created entry.
- *
- * Side effects:
- * Increments the reference count on the object.
- *
- *----------------------------------------------------------------------
- */
-
-static Tcl_HashEntry *
-AllocObjEntry(
- Tcl_HashTable *tablePtr, /* Hash table. */
- void *keyPtr) /* Key to store in the hash table entry. */
-{
- Tcl_Obj *objPtr = keyPtr;
- Tcl_HashEntry *hPtr = ckalloc(sizeof(Tcl_HashEntry));
-
- hPtr->key.objPtr = objPtr;
- Tcl_IncrRefCount(objPtr);
- hPtr->clientData = NULL;
-
- return hPtr;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclCompareObjKeys --
- *
- * Compares two Tcl_Obj * keys.
- *
- * Results:
- * The return value is 0 if they are different and 1 if they are the
- * same.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-int
-TclCompareObjKeys(
- void *keyPtr, /* New key to compare. */
- Tcl_HashEntry *hPtr) /* Existing key to compare. */
-{
- Tcl_Obj *objPtr1 = keyPtr;
- Tcl_Obj *objPtr2 = (Tcl_Obj *) hPtr->key.oneWordValue;
- register const char *p1, *p2;
- register int l1, l2;
-
- /*
- * If the object pointers are the same then they match.
- * OPT: this comparison was moved to the caller
-
- if (objPtr1 == objPtr2) return 1;
- */
-
- /*
- * Don't use Tcl_GetStringFromObj as it would prevent l1 and l2 being
- * in a register.
- */
-
- p1 = TclGetString(objPtr1);
- l1 = objPtr1->length;
- p2 = TclGetString(objPtr2);
- l2 = objPtr2->length;
-
- /*
- * Only compare if the string representations are of the same length.
- */
-
- if (l1 == l2) {
- for (;; p1++, p2++, l1--) {
- if (*p1 != *p2) {
- break;
- }
- if (l1 == 0) {
- return 1;
- }
- }
- }
-
- return 0;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclFreeObjEntry --
- *
- * Frees space for a Tcl_HashEntry containing the Tcl_Obj * key.
- *
- * Results:
- * The return value is a pointer to the created entry.
- *
- * Side effects:
- * Decrements the reference count of the object.
- *
- *----------------------------------------------------------------------
- */
-
-void
-TclFreeObjEntry(
- Tcl_HashEntry *hPtr) /* Hash entry to free. */
-{
- Tcl_Obj *objPtr = (Tcl_Obj *) hPtr->key.oneWordValue;
-
- Tcl_DecrRefCount(objPtr);
- ckfree(hPtr);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclHashObjKey --
- *
- * Compute a one-word summary of the string representation of the
- * Tcl_Obj, which can be used to generate a hash index.
- *
- * Results:
- * The return value is a one-word summary of the information in the
- * string representation of the Tcl_Obj.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-unsigned int
-TclHashObjKey(
- Tcl_HashTable *tablePtr, /* Hash table. */
- void *keyPtr) /* Key from which to compute hash value. */
-{
- Tcl_Obj *objPtr = keyPtr;
- int length;
- const char *string = TclGetStringFromObj(objPtr, &length);
- unsigned int result = 0;
-
- /*
- * I tried a zillion different hash functions and asked many other people
- * for advice. Many people had their own favorite functions, all
- * different, but no-one had much idea why they were good ones. I chose
- * the one below (multiply by 9 and add new character) because of the
- * following reasons:
- *
- * 1. Multiplying by 10 is perfect for keys that are decimal strings, and
- * multiplying by 9 is just about as good.
- * 2. Times-9 is (shift-left-3) plus (old). This means that each
- * character's bits hang around in the low-order bits of the hash value
- * for ever, plus they spread fairly rapidly up to the high-order bits
- * to fill out the hash value. This seems works well both for decimal
- * and non-decimal strings.
- *
- * Note that this function is very weak against malicious strings; it's
- * very easy to generate multiple keys that have the same hashcode. On the
- * other hand, that hardly ever actually occurs and this function *is*
- * very cheap, even by comparison with industry-standard hashes like FNV.
- * If real strength of hash is required though, use a custom hash based on
- * Bob Jenkins's lookup3(), but be aware that it's significantly slower.
- * Tcl does not use that level of strength because it typically does not
- * need it (and some of the aspects of that strength are genuinely
- * unnecessary given the rest of Tcl's hash machinery, and the fact that
- * we do not either transfer hashes to another machine, use them as a true
- * substitute for equality, or attempt to minimize work in rebuilding the
- * hash table).
- *
- * See also HashStringKey in tclHash.c.
- * See also HashString in tclLiteral.c.
- *
- * See [tcl-Feature Request #2958832]
- */
-
- if (length > 0) {
- result = UCHAR(*string);
- while (--length) {
- result += (result << 3) + UCHAR(*++string);
- }
- }
- return result;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_GetCommandFromObj --
- *
- * Returns the command specified by the name in a Tcl_Obj.
- *
- * Results:
- * Returns a token for the command if it is found. Otherwise, if it can't
- * be found or there is an error, returns NULL.
- *
- * Side effects:
- * May update the internal representation for the object, caching the
- * command reference so that the next time this function is called with
- * the same object, the command can be found quickly.
- *
- *----------------------------------------------------------------------
- */
-
-Tcl_Command
-Tcl_GetCommandFromObj(
- Tcl_Interp *interp, /* The interpreter in which to resolve the
- * command and to report errors. */
- register Tcl_Obj *objPtr) /* The object containing the command's name.
- * If the name starts with "::", will be
- * looked up in global namespace. Else, looked
- * up first in the current namespace, then in
- * global namespace. */
-{
- register ResolvedCmdName *resPtr;
-
- /*
- * Get the internal representation, converting to a command type if
- * needed. The internal representation is a ResolvedCmdName that points to
- * the actual command.
- *
- * Check the context namespace and the namespace epoch of the resolved
- * symbol to make sure that it is fresh. Note that we verify that the
- * namespace id of the context namespace is the same as the one we cached;
- * this insures that the namespace wasn't deleted and a new one created at
- * the same address with the same command epoch. Note that fully qualified
- * names have a NULL refNsPtr, these checks needn't be made.
- *
- * Check also that the command's epoch is up to date, and that the command
- * is not deleted.
- *
- * If any check fails, then force another conversion to the command type,
- * to discard the old rep and create a new one.
- */
-
- resPtr = objPtr->internalRep.twoPtrValue.ptr1;
- if ((objPtr->typePtr == &tclCmdNameType) && (resPtr != NULL)) {
- register Command *cmdPtr = resPtr->cmdPtr;
-
- if ((cmdPtr->cmdEpoch == resPtr->cmdEpoch)
- && !(cmdPtr->flags & CMD_IS_DELETED)
- && (interp == cmdPtr->nsPtr->interp)
- && !(cmdPtr->nsPtr->flags & NS_DYING)) {
- register Namespace *refNsPtr = (Namespace *)
- TclGetCurrentNamespace(interp);
-
- if ((resPtr->refNsPtr == NULL)
- || ((refNsPtr == resPtr->refNsPtr)
- && (resPtr->refNsId == refNsPtr->nsId)
- && (resPtr->refNsCmdEpoch == refNsPtr->cmdRefEpoch))) {
- return (Tcl_Command) cmdPtr;
- }
- }
- }
-
- /*
- * OK, must create a new internal representation (or fail) as any cache we
- * had is invalid one way or another.
- */
-
- /* See [] why we cannot call SetCmdNameFromAny() directly here. */
- if (tclCmdNameType.setFromAnyProc(interp, objPtr) != TCL_OK) {
- return NULL;
- }
- resPtr = objPtr->internalRep.twoPtrValue.ptr1;
- return (Tcl_Command) (resPtr ? resPtr->cmdPtr : NULL);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclSetCmdNameObj --
- *
- * Modify an object to be an CmdName object that refers to the argument
- * Command structure.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The object's old internal rep is freed. It's string rep is not
- * changed. The refcount in the Command structure is incremented to keep
- * it from being freed if the command is later deleted until
- * TclNRExecuteByteCode has a chance to recognize that it was deleted.
- *
- *----------------------------------------------------------------------
- */
-
-void
-TclSetCmdNameObj(
- Tcl_Interp *interp, /* Points to interpreter containing command
- * that should be cached in objPtr. */
- register Tcl_Obj *objPtr, /* Points to Tcl object to be changed to a
- * CmdName object. */
- Command *cmdPtr) /* Points to Command structure that the
- * CmdName object should refer to. */
-{
- Interp *iPtr = (Interp *) interp;
- register ResolvedCmdName *resPtr;
- register Namespace *currNsPtr;
- const char *name;
-
- if (objPtr->typePtr == &tclCmdNameType) {
- return;
- }
-
- cmdPtr->refCount++;
- resPtr = ckalloc(sizeof(ResolvedCmdName));
- resPtr->cmdPtr = cmdPtr;
- resPtr->cmdEpoch = cmdPtr->cmdEpoch;
- resPtr->refCount = 1;
-
- name = TclGetString(objPtr);
- if ((*name++ == ':') && (*name == ':')) {
- /*
- * The name is fully qualified: set the referring namespace to
- * NULL.
- */
-
- resPtr->refNsPtr = NULL;
- } else {
- /*
- * Get the current namespace.
- */
-
- currNsPtr = iPtr->varFramePtr->nsPtr;
-
- resPtr->refNsPtr = currNsPtr;
- resPtr->refNsId = currNsPtr->nsId;
- resPtr->refNsCmdEpoch = currNsPtr->cmdRefEpoch;
- }
-
- TclFreeIntRep(objPtr);
- objPtr->internalRep.twoPtrValue.ptr1 = resPtr;
- objPtr->internalRep.twoPtrValue.ptr2 = NULL;
- objPtr->typePtr = &tclCmdNameType;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * FreeCmdNameInternalRep --
- *
- * Frees the resources associated with a cmdName object's internal
- * representation.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Decrements the ref count of any cached ResolvedCmdName structure
- * pointed to by the cmdName's internal representation. If this is the
- * last use of the ResolvedCmdName, it is freed. This in turn decrements
- * the ref count of the Command structure pointed to by the
- * ResolvedSymbol, which may free the Command structure.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-FreeCmdNameInternalRep(
- register Tcl_Obj *objPtr) /* CmdName object with internal
- * representation to free. */
-{
- register ResolvedCmdName *resPtr = objPtr->internalRep.twoPtrValue.ptr1;
-
- if (resPtr != NULL) {
- /*
- * Decrement the reference count of the ResolvedCmdName structure. If
- * there are no more uses, free the ResolvedCmdName structure.
- */
-
- if (resPtr->refCount-- == 1) {
- /*
- * Now free the cached command, unless it is still in its hash
- * table or if there are other references to it from other cmdName
- * objects.
- */
-
- Command *cmdPtr = resPtr->cmdPtr;
-
- TclCleanupCommandMacro(cmdPtr);
- ckfree(resPtr);
- }
- }
- objPtr->typePtr = NULL;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * DupCmdNameInternalRep --
- *
- * Initialize the internal representation of an cmdName Tcl_Obj to a copy
- * of the internal representation of an existing cmdName object.
- *
- * Results:
- * None.
- *
- * Side effects:
- * "copyPtr"s internal rep is set to point to the ResolvedCmdName
- * structure corresponding to "srcPtr"s internal rep. Increments the ref
- * count of the ResolvedCmdName structure pointed to by the cmdName's
- * internal representation.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-DupCmdNameInternalRep(
- Tcl_Obj *srcPtr, /* Object with internal rep to copy. */
- register Tcl_Obj *copyPtr) /* Object with internal rep to set. */
-{
- register ResolvedCmdName *resPtr = srcPtr->internalRep.twoPtrValue.ptr1;
-
- copyPtr->internalRep.twoPtrValue.ptr1 = resPtr;
- copyPtr->internalRep.twoPtrValue.ptr2 = NULL;
- if (resPtr != NULL) {
- resPtr->refCount++;
- }
- copyPtr->typePtr = &tclCmdNameType;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * SetCmdNameFromAny --
- *
- * Generate an cmdName internal form for the Tcl object "objPtr".
- *
- * Results:
- * The return value is a standard Tcl result. The conversion always
- * succeeds and TCL_OK is returned.
- *
- * Side effects:
- * A pointer to a ResolvedCmdName structure that holds a cached pointer
- * to the command with a name that matches objPtr's string rep is stored
- * as objPtr's internal representation. This ResolvedCmdName pointer will
- * be NULL if no matching command was found. The ref count of the cached
- * Command's structure (if any) is also incremented.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-SetCmdNameFromAny(
- Tcl_Interp *interp, /* Used for error reporting if not NULL. */
- register Tcl_Obj *objPtr) /* The object to convert. */
-{
- Interp *iPtr = (Interp *) interp;
- const char *name;
- register Command *cmdPtr;
- Namespace *currNsPtr;
- register ResolvedCmdName *resPtr;
-
- if (interp == NULL) {
- return TCL_ERROR;
- }
-
- /*
- * Find the Command structure, if any, that describes the command called
- * "name". Build a ResolvedCmdName that holds a cached pointer to this
- * Command, and bump the reference count in the referenced Command
- * structure. A Command structure will not be deleted as long as it is
- * referenced from a CmdName object.
- */
-
- name = TclGetString(objPtr);
- cmdPtr = (Command *)
- Tcl_FindCommand(interp, name, /*ns*/ NULL, /*flags*/ 0);
-
- /*
- * Free the old internalRep before setting the new one. Do this after
- * getting the string rep to allow the conversion code (in particular,
- * Tcl_GetStringFromObj) to use that old internalRep.
- */
-
- if (cmdPtr) {
- cmdPtr->refCount++;
- resPtr = objPtr->internalRep.twoPtrValue.ptr1;
- if ((objPtr->typePtr == &tclCmdNameType)
- && resPtr && (resPtr->refCount == 1)) {
- /*
- * Reuse the old ResolvedCmdName struct instead of freeing it
- */
-
- Command *oldCmdPtr = resPtr->cmdPtr;
-
- if (--oldCmdPtr->refCount == 0) {
- TclCleanupCommandMacro(oldCmdPtr);
- }
- } else {
- TclFreeIntRep(objPtr);
- resPtr = ckalloc(sizeof(ResolvedCmdName));
- resPtr->refCount = 1;
- objPtr->internalRep.twoPtrValue.ptr1 = resPtr;
- objPtr->internalRep.twoPtrValue.ptr2 = NULL;
- objPtr->typePtr = &tclCmdNameType;
- }
- resPtr->cmdPtr = cmdPtr;
- resPtr->cmdEpoch = cmdPtr->cmdEpoch;
- if ((*name++ == ':') && (*name == ':')) {
- /*
- * The name is fully qualified: set the referring namespace to
- * NULL.
- */
-
- resPtr->refNsPtr = NULL;
- } else {
- /*
- * Get the current namespace.
- */
-
- currNsPtr = iPtr->varFramePtr->nsPtr;
-
- resPtr->refNsPtr = currNsPtr;
- resPtr->refNsId = currNsPtr->nsId;
- resPtr->refNsCmdEpoch = currNsPtr->cmdRefEpoch;
- }
- } else {
- TclFreeIntRep(objPtr);
- objPtr->internalRep.twoPtrValue.ptr1 = NULL;
- objPtr->internalRep.twoPtrValue.ptr2 = NULL;
- objPtr->typePtr = &tclCmdNameType;
- }
- return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_RepresentationCmd --
- *
- * Implementation of the "tcl::unsupported::representation" command.
- *
- * Results:
- * Reports the current representation (Tcl_Obj type) of its argument.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-int
-Tcl_RepresentationCmd(
- ClientData clientData,
- Tcl_Interp *interp,
- int objc,
- Tcl_Obj *const objv[])
-{
- char ptrBuffer[2*TCL_INTEGER_SPACE+6];
- Tcl_Obj *descObj;
-
- if (objc != 2) {
- Tcl_WrongNumArgs(interp, 1, objv, "value");
- return TCL_ERROR;
- }
-
- /*
- * Value is a bignum with a refcount of 14, object pointer at 0x12345678,
- * internal representation 0x45671234:0x98765432, string representation
- * "1872361827361287"
- */
-
- sprintf(ptrBuffer, "%p", (void *) objv[1]);
- descObj = Tcl_ObjPrintf("value is a %s with a refcount of %d,"
- " object pointer at %s",
- objv[1]->typePtr ? objv[1]->typePtr->name : "pure string",
- objv[1]->refCount, ptrBuffer);
-
- if (objv[1]->typePtr) {
- sprintf(ptrBuffer, "%p:%p",
- (void *) objv[1]->internalRep.twoPtrValue.ptr1,
- (void *) objv[1]->internalRep.twoPtrValue.ptr2);
- Tcl_AppendPrintfToObj(descObj, ", internal representation %s",
- ptrBuffer);
- }
-
- if (objv[1]->bytes) {
- Tcl_AppendToObj(descObj, ", string representation \"", -1);
- Tcl_AppendLimitedToObj(descObj, objv[1]->bytes, objv[1]->length,
- 16, "...");
- Tcl_AppendToObj(descObj, "\"", -1);
- } else {
- Tcl_AppendToObj(descObj, ", no string representation", -1);
- }
-
- Tcl_SetObjResult(interp, descObj);
- return TCL_OK;
-}
-
-/*
- * Local Variables:
- * mode: c
- * c-basic-offset: 4
- * fill-column: 78
- * tab-width: 8
- * indent-tabs-mode: nil
- * End:
- */