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/*
* tclInt.h --
*
* Declarations of things used internally by the Tcl interpreter.
*
* Copyright (c) 1987-1993 The Regents of the University of California.
* Copyright (c) 1993-1997 Lucent Technologies.
* Copyright (c) 1994-1998 Sun Microsystems, Inc.
* Copyright (c) 1998-1999 by Scriptics Corporation.
* Copyright (c) 2001, 2002 by Kevin B. Kenny. All rights reserved.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tclInt.h,v 1.111 2002/08/14 17:31:43 msofer Exp $
*/
#ifndef _TCLINT
#define _TCLINT
/*
* Common include files needed by most of the Tcl source files are
* included here, so that system-dependent personalizations for the
* include files only have to be made in once place. This results
* in a few extra includes, but greater modularity. The order of
* the three groups of #includes is important. For example, stdio.h
* is needed by tcl.h, and the _ANSI_ARGS_ declaration in tcl.h is
* needed by stdlib.h in some configurations.
*/
#ifndef _TCL
#include "tcl.h"
#endif
#include <stdio.h>
#include <ctype.h>
#ifdef NO_LIMITS_H
# include "../compat/limits.h"
#else
# include <limits.h>
#endif
#ifdef NO_STDLIB_H
# include "../compat/stdlib.h"
#else
# include <stdlib.h>
#endif
#ifdef NO_STRING_H
#include "../compat/string.h"
#else
#include <string.h>
#endif
#undef TCL_STORAGE_CLASS
#ifdef BUILD_tcl
# define TCL_STORAGE_CLASS DLLEXPORT
#else
# ifdef USE_TCL_STUBS
# define TCL_STORAGE_CLASS
# else
# define TCL_STORAGE_CLASS DLLIMPORT
# endif
#endif
/*
* The following procedures allow namespaces to be customized to
* support special name resolution rules for commands/variables.
*
*/
struct Tcl_ResolvedVarInfo;
typedef Tcl_Var (Tcl_ResolveRuntimeVarProc) _ANSI_ARGS_((
Tcl_Interp* interp, struct Tcl_ResolvedVarInfo *vinfoPtr));
typedef void (Tcl_ResolveVarDeleteProc) _ANSI_ARGS_((
struct Tcl_ResolvedVarInfo *vinfoPtr));
/*
* The following structure encapsulates the routines needed to resolve a
* variable reference at runtime. Any variable specific state will typically
* be appended to this structure.
*/
typedef struct Tcl_ResolvedVarInfo {
Tcl_ResolveRuntimeVarProc *fetchProc;
Tcl_ResolveVarDeleteProc *deleteProc;
} Tcl_ResolvedVarInfo;
typedef int (Tcl_ResolveCompiledVarProc) _ANSI_ARGS_((
Tcl_Interp* interp, CONST84 char* name, int length,
Tcl_Namespace *context, Tcl_ResolvedVarInfo **rPtr));
typedef int (Tcl_ResolveVarProc) _ANSI_ARGS_((
Tcl_Interp* interp, CONST84 char* name, Tcl_Namespace *context,
int flags, Tcl_Var *rPtr));
typedef int (Tcl_ResolveCmdProc) _ANSI_ARGS_((Tcl_Interp* interp,
CONST84 char* name, Tcl_Namespace *context, int flags,
Tcl_Command *rPtr));
typedef struct Tcl_ResolverInfo {
Tcl_ResolveCmdProc *cmdResProc; /* Procedure handling command name
* resolution. */
Tcl_ResolveVarProc *varResProc; /* Procedure handling variable name
* resolution for variables that
* can only be handled at runtime. */
Tcl_ResolveCompiledVarProc *compiledVarResProc;
/* Procedure handling variable name
* resolution at compile time. */
} Tcl_ResolverInfo;
/*
*----------------------------------------------------------------
* Data structures related to namespaces.
*----------------------------------------------------------------
*/
/*
* The structure below defines a namespace.
* Note: the first five fields must match exactly the fields in a
* Tcl_Namespace structure (see tcl.h). If you change one, be sure to
* change the other.
*/
typedef struct Namespace {
char *name; /* The namespace's simple (unqualified)
* name. This contains no ::'s. The name of
* the global namespace is "" although "::"
* is an synonym. */
char *fullName; /* The namespace's fully qualified name.
* This starts with ::. */
ClientData clientData; /* An arbitrary value associated with this
* namespace. */
Tcl_NamespaceDeleteProc *deleteProc;
/* Procedure invoked when deleting the
* namespace to, e.g., free clientData. */
struct Namespace *parentPtr; /* Points to the namespace that contains
* this one. NULL if this is the global
* namespace. */
Tcl_HashTable childTable; /* Contains any child namespaces. Indexed
* by strings; values have type
* (Namespace *). */
long nsId; /* Unique id for the namespace. */
Tcl_Interp *interp; /* The interpreter containing this
* namespace. */
int flags; /* OR-ed combination of the namespace
* status flags NS_DYING and NS_DEAD
* listed below. */
int activationCount; /* Number of "activations" or active call
* frames for this namespace that are on
* the Tcl call stack. The namespace won't
* be freed until activationCount becomes
* zero. */
int refCount; /* Count of references by namespaceName *
* objects. The namespace can't be freed
* until refCount becomes zero. */
Tcl_HashTable cmdTable; /* Contains all the commands currently
* registered in the namespace. Indexed by
* strings; values have type (Command *).
* Commands imported by Tcl_Import have
* Command structures that point (via an
* ImportedCmdRef structure) to the
* Command structure in the source
* namespace's command table. */
Tcl_HashTable varTable; /* Contains all the (global) variables
* currently in this namespace. Indexed
* by strings; values have type (Var *). */
char **exportArrayPtr; /* Points to an array of string patterns
* specifying which commands are exported.
* A pattern may include "string match"
* style wildcard characters to specify
* multiple commands; however, no namespace
* qualifiers are allowed. NULL if no
* export patterns are registered. */
int numExportPatterns; /* Number of export patterns currently
* registered using "namespace export". */
int maxExportPatterns; /* Mumber of export patterns for which
* space is currently allocated. */
int cmdRefEpoch; /* Incremented if a newly added command
* shadows a command for which this
* namespace has already cached a Command *
* pointer; this causes all its cached
* Command* pointers to be invalidated. */
int resolverEpoch; /* Incremented whenever (a) the name resolution
* rules change for this namespace or (b) a
* newly added command shadows a command that
* is compiled to bytecodes.
* This invalidates all byte codes compiled
* in the namespace, causing the code to be
* recompiled under the new rules.*/
Tcl_ResolveCmdProc *cmdResProc;
/* If non-null, this procedure overrides
* the usual command resolution mechanism
* in Tcl. This procedure is invoked
* within Tcl_FindCommand to resolve all
* command references within the namespace. */
Tcl_ResolveVarProc *varResProc;
/* If non-null, this procedure overrides
* the usual variable resolution mechanism
* in Tcl. This procedure is invoked
* within Tcl_FindNamespaceVar to resolve all
* variable references within the namespace
* at runtime. */
Tcl_ResolveCompiledVarProc *compiledVarResProc;
/* If non-null, this procedure overrides
* the usual variable resolution mechanism
* in Tcl. This procedure is invoked
* within LookupCompiledLocal to resolve
* variable references within the namespace
* at compile time. */
} Namespace;
/*
* Flags used to represent the status of a namespace:
*
* NS_DYING - 1 means Tcl_DeleteNamespace has been called to delete the
* namespace but there are still active call frames on the Tcl
* stack that refer to the namespace. When the last call frame
* referring to it has been popped, it's variables and command
* will be destroyed and it will be marked "dead" (NS_DEAD).
* The namespace can no longer be looked up by name.
* NS_DEAD - 1 means Tcl_DeleteNamespace has been called to delete the
* namespace and no call frames still refer to it. Its
* variables and command have already been destroyed. This bit
* allows the namespace resolution code to recognize that the
* namespace is "deleted". When the last namespaceName object
* in any byte code code unit that refers to the namespace has
* been freed (i.e., when the namespace's refCount is 0), the
* namespace's storage will be freed.
*/
#define NS_DYING 0x01
#define NS_DEAD 0x02
/*
* Flag passed to TclGetNamespaceForQualName to have it create all namespace
* components of a namespace-qualified name that cannot be found. The new
* namespaces are created within their specified parent. Note that this
* flag's value must not conflict with the values of the flags
* TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY, and FIND_ONLY_NS (defined in
* tclNamesp.c).
*/
#define CREATE_NS_IF_UNKNOWN 0x800
/*
*----------------------------------------------------------------
* Data structures related to variables. These are used primarily
* in tclVar.c
*----------------------------------------------------------------
*/
/*
* The following structure defines a variable trace, which is used to
* invoke a specific C procedure whenever certain operations are performed
* on a variable.
*/
typedef struct VarTrace {
Tcl_VarTraceProc *traceProc;/* Procedure to call when operations given
* by flags are performed on variable. */
ClientData clientData; /* Argument to pass to proc. */
int flags; /* What events the trace procedure is
* interested in: OR-ed combination of
* TCL_TRACE_READS, TCL_TRACE_WRITES,
* TCL_TRACE_UNSETS and TCL_TRACE_ARRAY. */
struct VarTrace *nextPtr; /* Next in list of traces associated with
* a particular variable. */
} VarTrace;
/*
* The following structure defines a command trace, which is used to
* invoke a specific C procedure whenever certain operations are performed
* on a command.
*/
typedef struct CommandTrace {
Tcl_CommandTraceProc *traceProc;/* Procedure to call when operations given
* by flags are performed on command. */
ClientData clientData; /* Argument to pass to proc. */
int flags; /* What events the trace procedure is
* interested in: OR-ed combination of
* TCL_TRACE_RENAME, TCL_TRACE_DELETE. */
struct CommandTrace *nextPtr; /* Next in list of traces associated with
* a particular command. */
} CommandTrace;
/*
* When a command trace is active (i.e. its associated procedure is
* executing), one of the following structures is linked into a list
* associated with the command's interpreter. The information in
* the structure is needed in order for Tcl to behave reasonably
* if traces are deleted while traces are active.
*/
typedef struct ActiveCommandTrace {
struct Command *cmdPtr; /* Command that's being traced. */
struct ActiveCommandTrace *nextPtr;
/* Next in list of all active command
* traces for the interpreter, or NULL
* if no more. */
CommandTrace *nextTracePtr; /* Next trace to check after current
* trace procedure returns; if this
* trace gets deleted, must update pointer
* to avoid using free'd memory. */
} ActiveCommandTrace;
/*
* When a variable trace is active (i.e. its associated procedure is
* executing), one of the following structures is linked into a list
* associated with the variable's interpreter. The information in
* the structure is needed in order for Tcl to behave reasonably
* if traces are deleted while traces are active.
*/
typedef struct ActiveVarTrace {
struct Var *varPtr; /* Variable that's being traced. */
struct ActiveVarTrace *nextPtr;
/* Next in list of all active variable
* traces for the interpreter, or NULL
* if no more. */
VarTrace *nextTracePtr; /* Next trace to check after current
* trace procedure returns; if this
* trace gets deleted, must update pointer
* to avoid using free'd memory. */
} ActiveVarTrace;
/*
* The following structure describes an enumerative search in progress on
* an array variable; this are invoked with options to the "array"
* command.
*/
typedef struct ArraySearch {
int id; /* Integer id used to distinguish among
* multiple concurrent searches for the
* same array. */
struct Var *varPtr; /* Pointer to array variable that's being
* searched. */
Tcl_HashSearch search; /* Info kept by the hash module about
* progress through the array. */
Tcl_HashEntry *nextEntry; /* Non-null means this is the next element
* to be enumerated (it's leftover from
* the Tcl_FirstHashEntry call or from
* an "array anymore" command). NULL
* means must call Tcl_NextHashEntry
* to get value to return. */
struct ArraySearch *nextPtr;/* Next in list of all active searches
* for this variable, or NULL if this is
* the last one. */
} ArraySearch;
/*
* The structure below defines a variable, which associates a string name
* with a Tcl_Obj value. These structures are kept in procedure call frames
* (for local variables recognized by the compiler) or in the heap (for
* global variables and any variable not known to the compiler). For each
* Var structure in the heap, a hash table entry holds the variable name and
* a pointer to the Var structure.
*/
typedef struct Var {
union {
Tcl_Obj *objPtr; /* The variable's object value. Used for
* scalar variables and array elements. */
Tcl_HashTable *tablePtr;/* For array variables, this points to
* information about the hash table used
* to implement the associative array.
* Points to malloc-ed data. */
struct Var *linkPtr; /* If this is a global variable being
* referred to in a procedure, or a variable
* created by "upvar", this field points to
* the referenced variable's Var struct. */
} value;
char *name; /* NULL if the variable is in a hashtable,
* otherwise points to the variable's
* name. It is used, e.g., by TclLookupVar
* and "info locals". The storage for the
* characters of the name is not owned by
* the Var and must not be freed when
* freeing the Var. */
Namespace *nsPtr; /* Points to the namespace that contains
* this variable or NULL if the variable is
* a local variable in a Tcl procedure. */
Tcl_HashEntry *hPtr; /* If variable is in a hashtable, either the
* hash table entry that refers to this
* variable or NULL if the variable has been
* detached from its hash table (e.g. an
* array is deleted, but some of its
* elements are still referred to in
* upvars). NULL if the variable is not in a
* hashtable. This is used to delete an
* variable from its hashtable if it is no
* longer needed. */
int refCount; /* Counts number of active uses of this
* variable, not including its entry in the
* call frame or the hash table: 1 for each
* additional variable whose linkPtr points
* here, 1 for each nested trace active on
* variable, and 1 if the variable is a
* namespace variable. This record can't be
* deleted until refCount becomes 0. */
VarTrace *tracePtr; /* First in list of all traces set for this
* variable. */
ArraySearch *searchPtr; /* First in list of all searches active
* for this variable, or NULL if none. */
int flags; /* Miscellaneous bits of information about
* variable. See below for definitions. */
} Var;
/*
* Flag bits for variables. The first three (VAR_SCALAR, VAR_ARRAY, and
* VAR_LINK) are mutually exclusive and give the "type" of the variable.
* VAR_UNDEFINED is independent of the variable's type.
*
* VAR_SCALAR - 1 means this is a scalar variable and not
* an array or link. The "objPtr" field points
* to the variable's value, a Tcl object.
* VAR_ARRAY - 1 means this is an array variable rather
* than a scalar variable or link. The
* "tablePtr" field points to the array's
* hashtable for its elements.
* VAR_LINK - 1 means this Var structure contains a
* pointer to another Var structure that
* either has the real value or is itself
* another VAR_LINK pointer. Variables like
* this come about through "upvar" and "global"
* commands, or through references to variables
* in enclosing namespaces.
* VAR_UNDEFINED - 1 means that the variable is in the process
* of being deleted. An undefined variable
* logically does not exist and survives only
* while it has a trace, or if it is a global
* variable currently being used by some
* procedure.
* VAR_IN_HASHTABLE - 1 means this variable is in a hashtable and
* the Var structure is malloced. 0 if it is
* a local variable that was assigned a slot
* in a procedure frame by the compiler so the
* Var storage is part of the call frame.
* VAR_TRACE_ACTIVE - 1 means that trace processing is currently
* underway for a read or write access, so
* new read or write accesses should not cause
* trace procedures to be called and the
* variable can't be deleted.
* VAR_ARRAY_ELEMENT - 1 means that this variable is an array
* element, so it is not legal for it to be
* an array itself (the VAR_ARRAY flag had
* better not be set).
* VAR_NAMESPACE_VAR - 1 means that this variable was declared
* as a namespace variable. This flag ensures
* it persists until its namespace is
* destroyed or until the variable is unset;
* it will persist even if it has not been
* initialized and is marked undefined.
* The variable's refCount is incremented to
* reflect the "reference" from its namespace.
*
* The following additional flags are used with the CompiledLocal type
* defined below:
*
* VAR_ARGUMENT - 1 means that this variable holds a procedure
* argument.
* VAR_TEMPORARY - 1 if the local variable is an anonymous
* temporary variable. Temporaries have a NULL
* name.
* VAR_RESOLVED - 1 if name resolution has been done for this
* variable.
*/
#define VAR_SCALAR 0x1
#define VAR_ARRAY 0x2
#define VAR_LINK 0x4
#define VAR_UNDEFINED 0x8
#define VAR_IN_HASHTABLE 0x10
#define VAR_TRACE_ACTIVE 0x20
#define VAR_ARRAY_ELEMENT 0x40
#define VAR_NAMESPACE_VAR 0x80
#define VAR_ARGUMENT 0x100
#define VAR_TEMPORARY 0x200
#define VAR_RESOLVED 0x400
/*
* Macros to ensure that various flag bits are set properly for variables.
* The ANSI C "prototypes" for these macros are:
*
* EXTERN void TclSetVarScalar _ANSI_ARGS_((Var *varPtr));
* EXTERN void TclSetVarArray _ANSI_ARGS_((Var *varPtr));
* EXTERN void TclSetVarLink _ANSI_ARGS_((Var *varPtr));
* EXTERN void TclSetVarArrayElement _ANSI_ARGS_((Var *varPtr));
* EXTERN void TclSetVarUndefined _ANSI_ARGS_((Var *varPtr));
* EXTERN void TclClearVarUndefined _ANSI_ARGS_((Var *varPtr));
*/
#define TclSetVarScalar(varPtr) \
(varPtr)->flags = ((varPtr)->flags & ~(VAR_ARRAY|VAR_LINK)) | VAR_SCALAR
#define TclSetVarArray(varPtr) \
(varPtr)->flags = ((varPtr)->flags & ~(VAR_SCALAR|VAR_LINK)) | VAR_ARRAY
#define TclSetVarLink(varPtr) \
(varPtr)->flags = ((varPtr)->flags & ~(VAR_SCALAR|VAR_ARRAY)) | VAR_LINK
#define TclSetVarArrayElement(varPtr) \
(varPtr)->flags = ((varPtr)->flags & ~VAR_ARRAY) | VAR_ARRAY_ELEMENT
#define TclSetVarUndefined(varPtr) \
(varPtr)->flags |= VAR_UNDEFINED
#define TclClearVarUndefined(varPtr) \
(varPtr)->flags &= ~VAR_UNDEFINED
/*
* Macros to read various flag bits of variables.
* The ANSI C "prototypes" for these macros are:
*
* EXTERN int TclIsVarScalar _ANSI_ARGS_((Var *varPtr));
* EXTERN int TclIsVarLink _ANSI_ARGS_((Var *varPtr));
* EXTERN int TclIsVarArray _ANSI_ARGS_((Var *varPtr));
* EXTERN int TclIsVarUndefined _ANSI_ARGS_((Var *varPtr));
* EXTERN int TclIsVarArrayElement _ANSI_ARGS_((Var *varPtr));
* EXTERN int TclIsVarTemporary _ANSI_ARGS_((Var *varPtr));
* EXTERN int TclIsVarArgument _ANSI_ARGS_((Var *varPtr));
* EXTERN int TclIsVarResolved _ANSI_ARGS_((Var *varPtr));
*/
#define TclIsVarScalar(varPtr) \
((varPtr)->flags & VAR_SCALAR)
#define TclIsVarLink(varPtr) \
((varPtr)->flags & VAR_LINK)
#define TclIsVarArray(varPtr) \
((varPtr)->flags & VAR_ARRAY)
#define TclIsVarUndefined(varPtr) \
((varPtr)->flags & VAR_UNDEFINED)
#define TclIsVarArrayElement(varPtr) \
((varPtr)->flags & VAR_ARRAY_ELEMENT)
#define TclIsVarTemporary(varPtr) \
((varPtr)->flags & VAR_TEMPORARY)
#define TclIsVarArgument(varPtr) \
((varPtr)->flags & VAR_ARGUMENT)
#define TclIsVarResolved(varPtr) \
((varPtr)->flags & VAR_RESOLVED)
/*
*----------------------------------------------------------------
* Data structures related to procedures. These are used primarily
* in tclProc.c, tclCompile.c, and tclExecute.c.
*----------------------------------------------------------------
*/
/*
* Forward declaration to prevent an error when the forward reference to
* Command is encountered in the Proc and ImportRef types declared below.
*/
struct Command;
/*
* The variable-length structure below describes a local variable of a
* procedure that was recognized by the compiler. These variables have a
* name, an element in the array of compiler-assigned local variables in the
* procedure's call frame, and various other items of information. If the
* local variable is a formal argument, it may also have a default value.
* The compiler can't recognize local variables whose names are
* expressions (these names are only known at runtime when the expressions
* are evaluated) or local variables that are created as a result of an
* "upvar" or "uplevel" command. These other local variables are kept
* separately in a hash table in the call frame.
*/
typedef struct CompiledLocal {
struct CompiledLocal *nextPtr;
/* Next compiler-recognized local variable
* for this procedure, or NULL if this is
* the last local. */
int nameLength; /* The number of characters in local
* variable's name. Used to speed up
* variable lookups. */
int frameIndex; /* Index in the array of compiler-assigned
* variables in the procedure call frame. */
int flags; /* Flag bits for the local variable. Same as
* the flags for the Var structure above,
* although only VAR_SCALAR, VAR_ARRAY,
* VAR_LINK, VAR_ARGUMENT, VAR_TEMPORARY, and
* VAR_RESOLVED make sense. */
Tcl_Obj *defValuePtr; /* Pointer to the default value of an
* argument, if any. NULL if not an argument
* or, if an argument, no default value. */
Tcl_ResolvedVarInfo *resolveInfo;
/* Customized variable resolution info
* supplied by the Tcl_ResolveCompiledVarProc
* associated with a namespace. Each variable
* is marked by a unique ClientData tag
* during compilation, and that same tag
* is used to find the variable at runtime. */
char name[4]; /* Name of the local variable starts here.
* If the name is NULL, this will just be
* '\0'. The actual size of this field will
* be large enough to hold the name. MUST
* BE THE LAST FIELD IN THE STRUCTURE! */
} CompiledLocal;
/*
* The structure below defines a command procedure, which consists of a
* collection of Tcl commands plus information about arguments and other
* local variables recognized at compile time.
*/
typedef struct Proc {
struct Interp *iPtr; /* Interpreter for which this command
* is defined. */
int refCount; /* Reference count: 1 if still present
* in command table plus 1 for each call
* to the procedure that is currently
* active. This structure can be freed
* when refCount becomes zero. */
struct Command *cmdPtr; /* Points to the Command structure for
* this procedure. This is used to get
* the namespace in which to execute
* the procedure. */
Tcl_Obj *bodyPtr; /* Points to the ByteCode object for
* procedure's body command. */
int numArgs; /* Number of formal parameters. */
int numCompiledLocals; /* Count of local variables recognized by
* the compiler including arguments and
* temporaries. */
CompiledLocal *firstLocalPtr; /* Pointer to first of the procedure's
* compiler-allocated local variables, or
* NULL if none. The first numArgs entries
* in this list describe the procedure's
* formal arguments. */
CompiledLocal *lastLocalPtr; /* Pointer to the last allocated local
* variable or NULL if none. This has
* frame index (numCompiledLocals-1). */
} Proc;
/*
* The structure below defines a command trace. This is used to allow Tcl
* clients to find out whenever a command is about to be executed.
*/
typedef struct Trace {
int level; /* Only trace commands at nesting level
* less than or equal to this. */
Tcl_CmdObjTraceProc *proc; /* Procedure to call to trace command. */
ClientData clientData; /* Arbitrary value to pass to proc. */
struct Trace *nextPtr; /* Next in list of traces for this interp. */
int flags; /* Flags governing the trace - see
* Tcl_CreateObjTrace for details */
Tcl_CmdObjTraceDeleteProc* delProc;
/* Procedure to call when trace is deleted */
} Trace;
/*
* When an interpreter trace is active (i.e. its associated procedure
* is executing), one of the following structures is linked into a list
* associated with the interpreter. The information in the structure
* is needed in order for Tcl to behave reasonably if traces are
* deleted while traces are active.
*/
typedef struct ActiveInterpTrace {
struct ActiveInterpTrace *nextPtr;
/* Next in list of all active command
* traces for the interpreter, or NULL
* if no more. */
Trace *nextTracePtr; /* Next trace to check after current
* trace procedure returns; if this
* trace gets deleted, must update pointer
* to avoid using free'd memory. */
} ActiveInterpTrace;
/*
* The structure below defines an entry in the assocData hash table which
* is associated with an interpreter. The entry contains a pointer to a
* function to call when the interpreter is deleted, and a pointer to
* a user-defined piece of data.
*/
typedef struct AssocData {
Tcl_InterpDeleteProc *proc; /* Proc to call when deleting. */
ClientData clientData; /* Value to pass to proc. */
} AssocData;
/*
* The structure below defines a call frame. A call frame defines a naming
* context for a procedure call: its local naming scope (for local
* variables) and its global naming scope (a namespace, perhaps the global
* :: namespace). A call frame can also define the naming context for a
* namespace eval or namespace inscope command: the namespace in which the
* command's code should execute. The Tcl_CallFrame structures exist only
* while procedures or namespace eval/inscope's are being executed, and
* provide a kind of Tcl call stack.
*
* WARNING!! The structure definition must be kept consistent with the
* Tcl_CallFrame structure in tcl.h. If you change one, change the other.
*/
typedef struct CallFrame {
Namespace *nsPtr; /* Points to the namespace used to resolve
* commands and global variables. */
int isProcCallFrame; /* If nonzero, the frame was pushed to
* execute a Tcl procedure and may have
* local vars. If 0, the frame was pushed
* to execute a namespace command and var
* references are treated as references to
* namespace vars; varTablePtr and
* compiledLocals are ignored. */
int objc; /* This and objv below describe the
* arguments for this procedure call. */
Tcl_Obj *CONST *objv; /* Array of argument objects. */
struct CallFrame *callerPtr;
/* Value of interp->framePtr when this
* procedure was invoked (i.e. next higher
* in stack of all active procedures). */
struct CallFrame *callerVarPtr;
/* Value of interp->varFramePtr when this
* procedure was invoked (i.e. determines
* variable scoping within caller). Same
* as callerPtr unless an "uplevel" command
* or something equivalent was active in
* the caller). */
int level; /* Level of this procedure, for "uplevel"
* purposes (i.e. corresponds to nesting of
* callerVarPtr's, not callerPtr's). 1 for
* outermost procedure, 0 for top-level. */
Proc *procPtr; /* Points to the structure defining the
* called procedure. Used to get information
* such as the number of compiled local
* variables (local variables assigned
* entries ["slots"] in the compiledLocals
* array below). */
Tcl_HashTable *varTablePtr; /* Hash table containing local variables not
* recognized by the compiler, or created at
* execution time through, e.g., upvar.
* Initially NULL and created if needed. */
int numCompiledLocals; /* Count of local variables recognized by
* the compiler including arguments. */
Var* compiledLocals; /* Points to the array of local variables
* recognized by the compiler. The compiler
* emits code that refers to these variables
* using an index into this array. */
} CallFrame;
/*
*----------------------------------------------------------------
* Data structures and procedures related to TclHandles, which
* are a very lightweight method of preserving enough information
* to determine if an arbitrary malloc'd block has been deleted.
*----------------------------------------------------------------
*/
typedef VOID **TclHandle;
/*
*----------------------------------------------------------------
* Data structures related to history. These are used primarily
* in tclHistory.c
*----------------------------------------------------------------
*/
/*
* The structure below defines one history event (a previously-executed
* command that can be re-executed in whole or in part).
*/
typedef struct {
char *command; /* String containing previously-executed
* command. */
int bytesAvl; /* Total # of bytes available at *event (not
* all are necessarily in use now). */
} HistoryEvent;
/*
* The structure below defines a pending revision to the most recent
* history event. Changes are linked together into a list and applied
* during the next call to Tcl_RecordHistory. See the comments at the
* beginning of tclHistory.c for information on revisions.
*/
typedef struct HistoryRev {
int firstIndex; /* Index of the first byte to replace in
* current history event. */
int lastIndex; /* Index of last byte to replace in
* current history event. */
int newSize; /* Number of bytes in newBytes. */
char *newBytes; /* Replacement for the range given by
* firstIndex and lastIndex (malloced). */
struct HistoryRev *nextPtr; /* Next in chain of revisions to apply, or
* NULL for end of list. */
} HistoryRev;
/*
*----------------------------------------------------------------
* Data structures related to expressions. These are used only in
* tclExpr.c.
*----------------------------------------------------------------
*/
/*
* The data structure below defines a math function (e.g. sin or hypot)
* for use in Tcl expressions.
*/
#define MAX_MATH_ARGS 5
typedef struct MathFunc {
int builtinFuncIndex; /* If this is a builtin math function, its
* index in the array of builtin functions.
* (tclCompilation.h lists these indices.)
* The value is -1 if this is a new function
* defined by Tcl_CreateMathFunc. The value
* is also -1 if a builtin function is
* replaced by a Tcl_CreateMathFunc call. */
int numArgs; /* Number of arguments for function. */
Tcl_ValueType argTypes[MAX_MATH_ARGS];
/* Acceptable types for each argument. */
Tcl_MathProc *proc; /* Procedure that implements this function.
* NULL if isBuiltinFunc is 1. */
ClientData clientData; /* Additional argument to pass to the
* function when invoking it. NULL if
* isBuiltinFunc is 1. */
} MathFunc;
/*
* These are a thin layer over TclpThreadKeyDataGet and TclpThreadKeyDataSet
* when threads are used, or an emulation if there are no threads. These
* are really internal and Tcl clients should use Tcl_GetThreadData.
*/
EXTERN VOID *TclThreadDataKeyGet _ANSI_ARGS_((Tcl_ThreadDataKey *keyPtr));
EXTERN void TclThreadDataKeySet _ANSI_ARGS_((Tcl_ThreadDataKey *keyPtr, VOID *data));
/*
* This is a convenience macro used to initialize a thread local storage ptr.
*/
#define TCL_TSD_INIT(keyPtr) (ThreadSpecificData *)Tcl_GetThreadData((keyPtr), sizeof(ThreadSpecificData))
/*
*----------------------------------------------------------------
* Data structures related to bytecode compilation and execution.
* These are used primarily in tclCompile.c, tclExecute.c, and
* tclBasic.c.
*----------------------------------------------------------------
*/
/*
* Forward declaration to prevent errors when the forward references to
* Tcl_Parse and CompileEnv are encountered in the procedure type
* CompileProc declared below.
*/
struct CompileEnv;
/*
* The type of procedures called by the Tcl bytecode compiler to compile
* commands. Pointers to these procedures are kept in the Command structure
* describing each command. When a CompileProc returns, the interpreter's
* result is set to error information, if any. In addition, the CompileProc
* returns an integer value, which is one of the following:
*
* TCL_OK Compilation completed normally.
* TCL_ERROR Compilation failed because of an error;
* the interpreter's result describes what went wrong.
* TCL_OUT_LINE_COMPILE Compilation failed because, e.g., the command is
* too complex for effective inline compilation. The
* CompileProc believes the command is legal but
* should be compiled "out of line" by emitting code
* to invoke its command procedure at runtime.
*/
#define TCL_OUT_LINE_COMPILE (TCL_CONTINUE + 1)
typedef int (CompileProc) _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Parse *parsePtr, struct CompileEnv *compEnvPtr));
/*
* The type of procedure called from the compilation hook point in
* SetByteCodeFromAny.
*/
typedef int (CompileHookProc) _ANSI_ARGS_((Tcl_Interp *interp,
struct CompileEnv *compEnvPtr, ClientData clientData));
/*
* The data structure defining the execution environment for ByteCode's.
* There is one ExecEnv structure per Tcl interpreter. It holds the
* evaluation stack that holds command operands and results. The stack grows
* towards increasing addresses. The "stackTop" member is cached by
* TclExecuteByteCode in a local variable: it must be set before calling
* TclExecuteByteCode and will be restored by TclExecuteByteCode before it
* returns.
*/
typedef struct ExecEnv {
Tcl_Obj **stackPtr; /* Points to the first item in the
* evaluation stack on the heap. */
int stackTop; /* Index of current top of stack; -1 when
* the stack is empty. */
int stackEnd; /* Index of last usable item in stack. */
Tcl_Obj *errorInfo;
Tcl_Obj *errorCode;
} ExecEnv;
/*
* The definitions for the LiteralTable and LiteralEntry structures. Each
* interpreter contains a LiteralTable. It is used to reduce the storage
* needed for all the Tcl objects that hold the literals of scripts compiled
* by the interpreter. A literal's object is shared by all the ByteCodes
* that refer to the literal. Each distinct literal has one LiteralEntry
* entry in the LiteralTable. A literal table is a specialized hash table
* that is indexed by the literal's string representation, which may contain
* null characters.
*
* Note that we reduce the space needed for literals by sharing literal
* objects both within a ByteCode (each ByteCode contains a local
* LiteralTable) and across all an interpreter's ByteCodes (with the
* interpreter's global LiteralTable).
*/
typedef struct LiteralEntry {
struct LiteralEntry *nextPtr; /* Points to next entry in this
* hash bucket or NULL if end of
* chain. */
Tcl_Obj *objPtr; /* Points to Tcl object that
* holds the literal's bytes and
* length. */
int refCount; /* If in an interpreter's global
* literal table, the number of
* ByteCode structures that share
* the literal object; the literal
* entry can be freed when refCount
* drops to 0. If in a local literal
* table, -1. */
} LiteralEntry;
typedef struct LiteralTable {
LiteralEntry **buckets; /* Pointer to bucket array. Each
* element points to first entry in
* bucket's hash chain, or NULL. */
LiteralEntry *staticBuckets[TCL_SMALL_HASH_TABLE];
/* Bucket array used for small
* tables to avoid mallocs and
* frees. */
int numBuckets; /* Total number of buckets allocated
* at **buckets. */
int numEntries; /* Total number of entries present
* in table. */
int rebuildSize; /* Enlarge table when numEntries
* gets to be this large. */
int mask; /* Mask value used in hashing
* function. */
} LiteralTable;
/*
* The following structure defines for each Tcl interpreter various
* statistics-related information about the bytecode compiler and
* interpreter's operation in that interpreter.
*/
#ifdef TCL_COMPILE_STATS
typedef struct ByteCodeStats {
long numExecutions; /* Number of ByteCodes executed. */
long numCompilations; /* Number of ByteCodes created. */
long numByteCodesFreed; /* Number of ByteCodes destroyed. */
long instructionCount[256]; /* Number of times each instruction was
* executed. */
double totalSrcBytes; /* Total source bytes ever compiled. */
double totalByteCodeBytes; /* Total bytes for all ByteCodes. */
double currentSrcBytes; /* Src bytes for all current ByteCodes. */
double currentByteCodeBytes; /* Code bytes in all current ByteCodes. */
long srcCount[32]; /* Source size distribution: # of srcs of
* size [2**(n-1)..2**n), n in [0..32). */
long byteCodeCount[32]; /* ByteCode size distribution. */
long lifetimeCount[32]; /* ByteCode lifetime distribution (ms). */
double currentInstBytes; /* Instruction bytes-current ByteCodes. */
double currentLitBytes; /* Current literal bytes. */
double currentExceptBytes; /* Current exception table bytes. */
double currentAuxBytes; /* Current auxiliary information bytes. */
double currentCmdMapBytes; /* Current src<->code map bytes. */
long numLiteralsCreated; /* Total literal objects ever compiled. */
double totalLitStringBytes; /* Total string bytes in all literals. */
double currentLitStringBytes; /* String bytes in current literals. */
long literalCount[32]; /* Distribution of literal string sizes. */
} ByteCodeStats;
#endif /* TCL_COMPILE_STATS */
/*
*----------------------------------------------------------------
* Data structures related to commands.
*----------------------------------------------------------------
*/
/*
* An imported command is created in an namespace when it imports a "real"
* command from another namespace. An imported command has a Command
* structure that points (via its ClientData value) to the "real" Command
* structure in the source namespace's command table. The real command
* records all the imported commands that refer to it in a list of ImportRef
* structures so that they can be deleted when the real command is deleted. */
typedef struct ImportRef {
struct Command *importedCmdPtr;
/* Points to the imported command created in
* an importing namespace; this command
* redirects its invocations to the "real"
* command. */
struct ImportRef *nextPtr; /* Next element on the linked list of
* imported commands that refer to the
* "real" command. The real command deletes
* these imported commands on this list when
* it is deleted. */
} ImportRef;
/*
* Data structure used as the ClientData of imported commands: commands
* created in an namespace when it imports a "real" command from another
* namespace.
*/
typedef struct ImportedCmdData {
struct Command *realCmdPtr; /* "Real" command that this imported command
* refers to. */
struct Command *selfPtr; /* Pointer to this imported command. Needed
* only when deleting it in order to remove
* it from the real command's linked list of
* imported commands that refer to it. */
} ImportedCmdData;
/*
* A Command structure exists for each command in a namespace. The
* Tcl_Command opaque type actually refers to these structures.
*/
typedef struct Command {
Tcl_HashEntry *hPtr; /* Pointer to the hash table entry that
* refers to this command. The hash table is
* either a namespace's command table or an
* interpreter's hidden command table. This
* pointer is used to get a command's name
* from its Tcl_Command handle. NULL means
* that the hash table entry has been
* removed already (this can happen if
* deleteProc causes the command to be
* deleted or recreated). */
Namespace *nsPtr; /* Points to the namespace containing this
* command. */
int refCount; /* 1 if in command hashtable plus 1 for each
* reference from a CmdName Tcl object
* representing a command's name in a
* ByteCode instruction sequence. This
* structure can be freed when refCount
* becomes zero. */
int cmdEpoch; /* Incremented to invalidate any references
* that point to this command when it is
* renamed, deleted, hidden, or exposed. */
CompileProc *compileProc; /* Procedure called to compile command. NULL
* if no compile proc exists for command. */
Tcl_ObjCmdProc *objProc; /* Object-based command procedure. */
ClientData objClientData; /* Arbitrary value passed to object proc. */
Tcl_CmdProc *proc; /* String-based command procedure. */
ClientData clientData; /* Arbitrary value passed to string proc. */
Tcl_CmdDeleteProc *deleteProc;
/* Procedure invoked when deleting command
* to, e.g., free all client data. */
ClientData deleteData; /* Arbitrary value passed to deleteProc. */
int flags; /* Miscellaneous bits of information about
* command. See below for definitions. */
ImportRef *importRefPtr; /* List of each imported Command created in
* another namespace when this command is
* imported. These imported commands
* redirect invocations back to this
* command. The list is used to remove all
* those imported commands when deleting
* this "real" command. */
CommandTrace *tracePtr; /* First in list of all traces set for this
* command. */
} Command;
/*
* Flag bits for commands.
*
* CMD_IS_DELETED - Means that the command is in the process
* of being deleted (its deleteProc is
* currently executing). Other attempts to
* delete the command should be ignored.
* CMD_TRACE_ACTIVE - 1 means that trace processing is currently
* underway for a rename/delete change.
* See the two flags below for which is
* currently being processed.
* CMD_HAS_EXEC_TRACES - 1 means that this command has at least
* one execution trace (as opposed to simple
* delete/rename traces) in its tracePtr list.
* TCL_TRACE_RENAME - A rename trace is in progress. Further
* recursive renames will not be traced.
* TCL_TRACE_DELETE - A delete trace is in progress. Further
* recursive deletes will not be traced.
* (these last two flags are defined in tcl.h)
*/
#define CMD_IS_DELETED 0x1
#define CMD_TRACE_ACTIVE 0x2
#define CMD_HAS_EXEC_TRACES 0x4
/*
*----------------------------------------------------------------
* Data structures related to name resolution procedures.
*----------------------------------------------------------------
*/
/*
* The interpreter keeps a linked list of name resolution schemes.
* The scheme for a namespace is consulted first, followed by the
* list of schemes in an interpreter, followed by the default
* name resolution in Tcl. Schemes are added/removed from the
* interpreter's list by calling Tcl_AddInterpResolver and
* Tcl_RemoveInterpResolver.
*/
typedef struct ResolverScheme {
char *name; /* Name identifying this scheme. */
Tcl_ResolveCmdProc *cmdResProc;
/* Procedure handling command name
* resolution. */
Tcl_ResolveVarProc *varResProc;
/* Procedure handling variable name
* resolution for variables that
* can only be handled at runtime. */
Tcl_ResolveCompiledVarProc *compiledVarResProc;
/* Procedure handling variable name
* resolution at compile time. */
struct ResolverScheme *nextPtr;
/* Pointer to next record in linked list. */
} ResolverScheme;
/*
*----------------------------------------------------------------
* This structure defines an interpreter, which is a collection of
* commands plus other state information related to interpreting
* commands, such as variable storage. Primary responsibility for
* this data structure is in tclBasic.c, but almost every Tcl
* source file uses something in here.
*----------------------------------------------------------------
*/
typedef struct Interp {
/*
* Note: the first three fields must match exactly the fields in
* a Tcl_Interp struct (see tcl.h). If you change one, be sure to
* change the other.
*
* The interpreter's result is held in both the string and the
* objResultPtr fields. These fields hold, respectively, the result's
* string or object value. The interpreter's result is always in the
* result field if that is non-empty, otherwise it is in objResultPtr.
* The two fields are kept consistent unless some C code sets
* interp->result directly. Programs should not access result and
* objResultPtr directly; instead, they should always get and set the
* result using procedures such as Tcl_SetObjResult, Tcl_GetObjResult,
* and Tcl_GetStringResult. See the SetResult man page for details.
*/
char *result; /* If the last command returned a string
* result, this points to it. Should not be
* accessed directly; see comment above. */
Tcl_FreeProc *freeProc; /* Zero means a string result is statically
* allocated. TCL_DYNAMIC means string
* result was allocated with ckalloc and
* should be freed with ckfree. Other values
* give address of procedure to invoke to
* free the string result. Tcl_Eval must
* free it before executing next command. */
int errorLine; /* When TCL_ERROR is returned, this gives
* the line number in the command where the
* error occurred (1 means first line). */
struct TclStubs *stubTable;
/* Pointer to the exported Tcl stub table.
* On previous versions of Tcl this is a
* pointer to the objResultPtr or a pointer
* to a buckets array in a hash table. We
* therefore have to do some careful checking
* before we can use this. */
TclHandle handle; /* Handle used to keep track of when this
* interp is deleted. */
Namespace *globalNsPtr; /* The interpreter's global namespace. */
Tcl_HashTable *hiddenCmdTablePtr;
/* Hash table used by tclBasic.c to keep
* track of hidden commands on a per-interp
* basis. */
ClientData interpInfo; /* Information used by tclInterp.c to keep
* track of master/slave interps on
* a per-interp basis. */
Tcl_HashTable mathFuncTable;/* Contains all the math functions currently
* defined for the interpreter. Indexed by
* strings (function names); values have
* type (MathFunc *). */
/*
* Information related to procedures and variables. See tclProc.c
* and tclVar.c for usage.
*/
int numLevels; /* Keeps track of how many nested calls to
* Tcl_Eval are in progress for this
* interpreter. It's used to delay deletion
* of the table until all Tcl_Eval
* invocations are completed. */
int maxNestingDepth; /* If numLevels exceeds this value then Tcl
* assumes that infinite recursion has
* occurred and it generates an error. */
CallFrame *framePtr; /* Points to top-most in stack of all nested
* procedure invocations. NULL means there
* are no active procedures. */
CallFrame *varFramePtr; /* Points to the call frame whose variables
* are currently in use (same as framePtr
* unless an "uplevel" command is
* executing). NULL means no procedure is
* active or "uplevel 0" is executing. */
ActiveVarTrace *activeVarTracePtr;
/* First in list of active traces for
* interp, or NULL if no active traces. */
int returnCode; /* Completion code to return if current
* procedure exits with TCL_RETURN code. */
char *errorInfo; /* Value to store in errorInfo if returnCode
* is TCL_ERROR. Malloc'ed, may be NULL */
char *errorCode; /* Value to store in errorCode if returnCode
* is TCL_ERROR. Malloc'ed, may be NULL */
/*
* Information used by Tcl_AppendResult to keep track of partial
* results. See Tcl_AppendResult code for details.
*/
char *appendResult; /* Storage space for results generated
* by Tcl_AppendResult. Malloc-ed. NULL
* means not yet allocated. */
int appendAvl; /* Total amount of space available at
* partialResult. */
int appendUsed; /* Number of non-null bytes currently
* stored at partialResult. */
/*
* Information about packages. Used only in tclPkg.c.
*/
Tcl_HashTable packageTable; /* Describes all of the packages loaded
* in or available to this interpreter.
* Keys are package names, values are
* (Package *) pointers. */
char *packageUnknown; /* Command to invoke during "package
* require" commands for packages that
* aren't described in packageTable.
* Malloc'ed, may be NULL. */
/*
* Miscellaneous information:
*/
int cmdCount; /* Total number of times a command procedure
* has been called for this interpreter. */
int evalFlags; /* Flags to control next call to Tcl_Eval.
* Normally zero, but may be set before
* calling Tcl_Eval. See below for valid
* values. */
int termOffset; /* Offset of character just after last one
* compiled or executed by Tcl_EvalObj. */
LiteralTable literalTable; /* Contains LiteralEntry's describing all
* Tcl objects holding literals of scripts
* compiled by the interpreter. Indexed by
* the string representations of literals.
* Used to avoid creating duplicate
* objects. */
int compileEpoch; /* Holds the current "compilation epoch"
* for this interpreter. This is
* incremented to invalidate existing
* ByteCodes when, e.g., a command with a
* compile procedure is redefined. */
Proc *compiledProcPtr; /* If a procedure is being compiled, a
* pointer to its Proc structure; otherwise,
* this is NULL. Set by ObjInterpProc in
* tclProc.c and used by tclCompile.c to
* process local variables appropriately. */
ResolverScheme *resolverPtr;
/* Linked list of name resolution schemes
* added to this interpreter. Schemes
* are added/removed by calling
* Tcl_AddInterpResolvers and
* Tcl_RemoveInterpResolver. */
Tcl_Obj *scriptFile; /* NULL means there is no nested source
* command active; otherwise this points to
* pathPtr of the file being sourced. */
int flags; /* Various flag bits. See below. */
long randSeed; /* Seed used for rand() function. */
Trace *tracePtr; /* List of traces for this interpreter. */
Tcl_HashTable *assocData; /* Hash table for associating data with
* this interpreter. Cleaned up when
* this interpreter is deleted. */
struct ExecEnv *execEnvPtr; /* Execution environment for Tcl bytecode
* execution. Contains a pointer to the
* Tcl evaluation stack. */
Tcl_Obj *emptyObjPtr; /* Points to an object holding an empty
* string. Returned by Tcl_ObjSetVar2 when
* variable traces change a variable in a
* gross way. */
char resultSpace[TCL_RESULT_SIZE+1];
/* Static space holding small results. */
Tcl_Obj *objResultPtr; /* If the last command returned an object
* result, this points to it. Should not be
* accessed directly; see comment above. */
Tcl_ThreadId threadId; /* ID of thread that owns the interpreter */
ActiveCommandTrace *activeCmdTracePtr;
/* First in list of active command traces for
* interp, or NULL if no active traces. */
ActiveInterpTrace *activeInterpTracePtr;
/* First in list of active traces for
* interp, or NULL if no active traces. */
int tracesForbiddingInline; /* Count of traces (in the list headed by
* tracePtr) that forbid inline bytecode
* compilation */
/*
* Statistical information about the bytecode compiler and interpreter's
* operation.
*/
#ifdef TCL_COMPILE_STATS
ByteCodeStats stats; /* Holds compilation and execution
* statistics for this interpreter. */
#endif /* TCL_COMPILE_STATS */
} Interp;
/*
* EvalFlag bits for Interp structures:
*
* TCL_BRACKET_TERM 1 means that the current script is terminated by
* a close bracket rather than the end of the string.
* TCL_ALLOW_EXCEPTIONS 1 means it's OK for the script to terminate with
* a code other than TCL_OK or TCL_ERROR; 0 means
* codes other than these should be turned into errors.
*/
#define TCL_BRACKET_TERM 1
#define TCL_ALLOW_EXCEPTIONS 4
/*
* Flag bits for Interp structures:
*
* DELETED: Non-zero means the interpreter has been deleted:
* don't process any more commands for it, and destroy
* the structure as soon as all nested invocations of
* Tcl_Eval are done.
* ERR_IN_PROGRESS: Non-zero means an error unwind is already in
* progress. Zero means a command proc has been
* invoked since last error occured.
* ERR_ALREADY_LOGGED: Non-zero means information has already been logged
* in $errorInfo for the current Tcl_Eval instance,
* so Tcl_Eval needn't log it (used to implement the
* "error message log" command).
* ERROR_CODE_SET: Non-zero means that Tcl_SetErrorCode has been
* called to record information for the current
* error. Zero means Tcl_Eval must clear the
* errorCode variable if an error is returned.
* EXPR_INITIALIZED: Non-zero means initialization specific to
* expressions has been carried out.
* DONT_COMPILE_CMDS_INLINE: Non-zero means that the bytecode compiler
* should not compile any commands into an inline
* sequence of instructions. This is set 1, for
* example, when command traces are requested.
* RAND_SEED_INITIALIZED: Non-zero means that the randSeed value of the
* interp has not be initialized. This is set 1
* when we first use the rand() or srand() functions.
* SAFE_INTERP: Non zero means that the current interp is a
* safe interp (ie it has only the safe commands
* installed, less priviledge than a regular interp).
* USE_EVAL_DIRECT: Non-zero means don't use the compiler or byte-code
* interpreter; instead, have Tcl_EvalObj call
* Tcl_EvalEx. Used primarily for testing the
* new parser.
* INTERP_TRACE_IN_PROGRESS: Non-zero means that an interp trace is currently
* active; so no further trace callbacks should be
* invoked.
*/
#define DELETED 1
#define ERR_IN_PROGRESS 2
#define ERR_ALREADY_LOGGED 4
#define ERROR_CODE_SET 8
#define EXPR_INITIALIZED 0x10
#define DONT_COMPILE_CMDS_INLINE 0x20
#define RAND_SEED_INITIALIZED 0x40
#define SAFE_INTERP 0x80
#define USE_EVAL_DIRECT 0x100
#define INTERP_TRACE_IN_PROGRESS 0x200
/*
*----------------------------------------------------------------
* Data structures related to command parsing. These are used in
* tclParse.c and its clients.
*----------------------------------------------------------------
*/
/*
* The following data structure is used by various parsing procedures
* to hold information about where to store the results of parsing
* (e.g. the substituted contents of a quoted argument, or the result
* of a nested command). At any given time, the space available
* for output is fixed, but a procedure may be called to expand the
* space available if the current space runs out.
*/
typedef struct ParseValue {
char *buffer; /* Address of first character in
* output buffer. */
char *next; /* Place to store next character in
* output buffer. */
char *end; /* Address of the last usable character
* in the buffer. */
void (*expandProc) _ANSI_ARGS_((struct ParseValue *pvPtr, int needed));
/* Procedure to call when space runs out;
* it will make more space. */
ClientData clientData; /* Arbitrary information for use of
* expandProc. */
} ParseValue;
/*
* Maximum number of levels of nesting permitted in Tcl commands (used
* to catch infinite recursion).
*/
#define MAX_NESTING_DEPTH 1000
/*
* The macro below is used to modify a "char" value (e.g. by casting
* it to an unsigned character) so that it can be used safely with
* macros such as isspace.
*/
#define UCHAR(c) ((unsigned char) (c))
/*
* This macro is used to determine the offset needed to safely allocate any
* data structure in memory. Given a starting offset or size, it "rounds up"
* or "aligns" the offset to the next 8-byte boundary so that any data
* structure can be placed at the resulting offset without fear of an
* alignment error.
*
* WARNING!! DO NOT USE THIS MACRO TO ALIGN POINTERS: it will produce
* the wrong result on platforms that allocate addresses that are divisible
* by 4 or 2. Only use it for offsets or sizes.
*/
#define TCL_ALIGN(x) (((int)(x) + 7) & ~7)
/*
* The following enum values are used to specify the runtime platform
* setting of the tclPlatform variable.
*/
typedef enum {
TCL_PLATFORM_UNIX, /* Any Unix-like OS. */
TCL_PLATFORM_MAC, /* MacOS. */
TCL_PLATFORM_WINDOWS /* Any Microsoft Windows OS. */
} TclPlatformType;
/*
* The following enum values are used to indicate the translation
* of a Tcl channel. Declared here so that each platform can define
* TCL_PLATFORM_TRANSLATION to the native translation on that platform
*/
typedef enum TclEolTranslation {
TCL_TRANSLATE_AUTO, /* Eol == \r, \n and \r\n. */
TCL_TRANSLATE_CR, /* Eol == \r. */
TCL_TRANSLATE_LF, /* Eol == \n. */
TCL_TRANSLATE_CRLF /* Eol == \r\n. */
} TclEolTranslation;
/*
* Flags for TclInvoke:
*
* TCL_INVOKE_HIDDEN Invoke a hidden command; if not set,
* invokes an exposed command.
* TCL_INVOKE_NO_UNKNOWN If set, "unknown" is not invoked if
* the command to be invoked is not found.
* Only has an effect if invoking an exposed
* command, i.e. if TCL_INVOKE_HIDDEN is not
* also set.
* TCL_INVOKE_NO_TRACEBACK Does not record traceback information if
* the invoked command returns an error. Used
* if the caller plans on recording its own
* traceback information.
*/
#define TCL_INVOKE_HIDDEN (1<<0)
#define TCL_INVOKE_NO_UNKNOWN (1<<1)
#define TCL_INVOKE_NO_TRACEBACK (1<<2)
/*
* The structure used as the internal representation of Tcl list
* objects. This is an array of pointers to the element objects. This array
* is grown (reallocated and copied) as necessary to hold all the list's
* element pointers. The array might contain more slots than currently used
* to hold all element pointers. This is done to make append operations
* faster.
*/
typedef struct List {
int maxElemCount; /* Total number of element array slots. */
int elemCount; /* Current number of list elements. */
Tcl_Obj **elements; /* Array of pointers to element objects. */
} List;
/*
* The following types are used for getting and storing platform-specific
* file attributes in tclFCmd.c and the various platform-versions of
* that file. This is done to have as much common code as possible
* in the file attributes code. For more information about the callbacks,
* see TclFileAttrsCmd in tclFCmd.c.
*/
typedef int (TclGetFileAttrProc) _ANSI_ARGS_((Tcl_Interp *interp,
int objIndex, Tcl_Obj *fileName, Tcl_Obj **attrObjPtrPtr));
typedef int (TclSetFileAttrProc) _ANSI_ARGS_((Tcl_Interp *interp,
int objIndex, Tcl_Obj *fileName, Tcl_Obj *attrObjPtr));
typedef struct TclFileAttrProcs {
TclGetFileAttrProc *getProc; /* The procedure for getting attrs. */
TclSetFileAttrProc *setProc; /* The procedure for setting attrs. */
} TclFileAttrProcs;
/*
* Opaque handle used in pipeline routines to encapsulate platform-dependent
* state.
*/
typedef struct TclFile_ *TclFile;
/*
* Opaque names for platform specific types.
*/
typedef struct TclpTime_t_ *TclpTime_t;
/*
* The "globParameters" argument of the function TclGlob is an
* or'ed combination of the following values:
*/
#define TCL_GLOBMODE_NO_COMPLAIN 1
#define TCL_GLOBMODE_JOIN 2
#define TCL_GLOBMODE_DIR 4
#define TCL_GLOBMODE_TAILS 8
/*
*----------------------------------------------------------------
* Data structures related to obsolete filesystem hooks
*----------------------------------------------------------------
*/
typedef int (TclStatProc_) _ANSI_ARGS_((CONST char *path, struct stat *buf));
typedef int (TclAccessProc_) _ANSI_ARGS_((CONST char *path, int mode));
typedef Tcl_Channel (TclOpenFileChannelProc_) _ANSI_ARGS_((Tcl_Interp *interp,
CONST char *fileName, CONST char *modeString,
int permissions));
/*
*----------------------------------------------------------------
* Data structures related to procedures
*----------------------------------------------------------------
*/
typedef Tcl_CmdProc *TclCmdProcType;
typedef Tcl_ObjCmdProc *TclObjCmdProcType;
/*
*----------------------------------------------------------------
* Variables shared among Tcl modules but not used by the outside world.
*----------------------------------------------------------------
*/
extern Tcl_Time tclBlockTime;
extern int tclBlockTimeSet;
extern char * tclExecutableName;
extern char * tclNativeExecutableName;
extern char * tclDefaultEncodingDir;
extern Tcl_ChannelType tclFileChannelType;
extern char * tclMemDumpFileName;
extern TclPlatformType tclPlatform;
/*
* Variables denoting the Tcl object types defined in the core.
*/
extern Tcl_ObjType tclBooleanType;
extern Tcl_ObjType tclByteArrayType;
extern Tcl_ObjType tclByteCodeType;
extern Tcl_ObjType tclDoubleType;
extern Tcl_ObjType tclEndOffsetType;
extern Tcl_ObjType tclIntType;
extern Tcl_ObjType tclListType;
extern Tcl_ObjType tclProcBodyType;
extern Tcl_ObjType tclStringType;
extern Tcl_ObjType tclArraySearchType;
extern Tcl_ObjType tclIndexType;
extern Tcl_ObjType tclNsNameType;
#ifndef TCL_WIDE_INT_IS_LONG
extern Tcl_ObjType tclWideIntType;
#endif
/*
* Variables denoting the hash key types defined in the core.
*/
extern Tcl_HashKeyType tclArrayHashKeyType;
extern Tcl_HashKeyType tclOneWordHashKeyType;
extern Tcl_HashKeyType tclStringHashKeyType;
extern Tcl_HashKeyType tclObjHashKeyType;
/*
* The head of the list of free Tcl objects, and the total number of Tcl
* objects ever allocated and freed.
*/
extern Tcl_Obj * tclFreeObjList;
#ifdef TCL_COMPILE_STATS
extern long tclObjsAlloced;
extern long tclObjsFreed;
#define TCL_MAX_SHARED_OBJ_STATS 5
extern long tclObjsShared[TCL_MAX_SHARED_OBJ_STATS];
#endif /* TCL_COMPILE_STATS */
/*
* 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.
*/
extern char * tclEmptyStringRep;
extern char tclEmptyString;
/*
*----------------------------------------------------------------
* Procedures shared among Tcl modules but not used by the outside
* world:
*----------------------------------------------------------------
*/
EXTERN int TclArraySet _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Obj *arrayNameObj, Tcl_Obj *arrayElemObj));
EXTERN int TclCheckBadOctal _ANSI_ARGS_((Tcl_Interp *interp,
CONST char *value));
EXTERN void TclExpandTokenArray _ANSI_ARGS_((
Tcl_Parse *parsePtr));
EXTERN int TclFileAttrsCmd _ANSI_ARGS_((Tcl_Interp *interp,
int objc, Tcl_Obj *CONST objv[]));
EXTERN int TclFileCopyCmd _ANSI_ARGS_((Tcl_Interp *interp,
int objc, Tcl_Obj *CONST objv[])) ;
EXTERN int TclFileDeleteCmd _ANSI_ARGS_((Tcl_Interp *interp,
int objc, Tcl_Obj *CONST objv[]));
EXTERN int TclFileMakeDirsCmd _ANSI_ARGS_((Tcl_Interp *interp,
int objc, Tcl_Obj *CONST objv[])) ;
EXTERN int TclFileRenameCmd _ANSI_ARGS_((Tcl_Interp *interp,
int objc, Tcl_Obj *CONST objv[])) ;
EXTERN void TclFinalizeAllocSubsystem _ANSI_ARGS_((void));
EXTERN void TclFinalizeCompExecEnv _ANSI_ARGS_((void));
EXTERN void TclFinalizeCompilation _ANSI_ARGS_((void));
EXTERN void TclFinalizeEncodingSubsystem _ANSI_ARGS_((void));
EXTERN void TclFinalizeEnvironment _ANSI_ARGS_((void));
EXTERN void TclFinalizeExecution _ANSI_ARGS_((void));
EXTERN void TclFinalizeIOSubsystem _ANSI_ARGS_((void));
EXTERN void TclFinalizeFilesystem _ANSI_ARGS_((void));
EXTERN void TclFinalizeLoad _ANSI_ARGS_((void));
EXTERN void TclFinalizeMemorySubsystem _ANSI_ARGS_((void));
EXTERN void TclFinalizeNotifier _ANSI_ARGS_((void));
EXTERN void TclFinalizeAsync _ANSI_ARGS_((void));
EXTERN void TclFinalizeSynchronization _ANSI_ARGS_((void));
EXTERN void TclFinalizeThreadData _ANSI_ARGS_((void));
EXTERN void TclFindEncodings _ANSI_ARGS_((CONST char *argv0));
EXTERN int TclGlob _ANSI_ARGS_((Tcl_Interp *interp,
char *pattern, Tcl_Obj *unquotedPrefix,
int globFlags, Tcl_GlobTypeData* types));
EXTERN void TclInitAlloc _ANSI_ARGS_((void));
EXTERN void TclInitDbCkalloc _ANSI_ARGS_((void));
EXTERN void TclInitEncodingSubsystem _ANSI_ARGS_((void));
EXTERN void TclInitIOSubsystem _ANSI_ARGS_((void));
EXTERN void TclInitNamespaceSubsystem _ANSI_ARGS_((void));
EXTERN void TclInitNotifier _ANSI_ARGS_((void));
EXTERN void TclInitObjSubsystem _ANSI_ARGS_((void));
EXTERN void TclInitSubsystems _ANSI_ARGS_((CONST char *argv0));
EXTERN int TclIsLocalScalar _ANSI_ARGS_((CONST char *src,
int len));
EXTERN int TclJoinThread _ANSI_ARGS_((Tcl_ThreadId id,
int* result));
EXTERN Tcl_Obj * TclLindexList _ANSI_ARGS_((Tcl_Interp* interp,
Tcl_Obj* listPtr,
Tcl_Obj* argPtr ));
EXTERN Tcl_Obj * TclLindexFlat _ANSI_ARGS_((Tcl_Interp* interp,
Tcl_Obj* listPtr,
int indexCount,
Tcl_Obj *CONST indexArray[]
));
EXTERN Tcl_Obj * TclLsetList _ANSI_ARGS_((Tcl_Interp* interp,
Tcl_Obj* listPtr,
Tcl_Obj* indexPtr,
Tcl_Obj* valuePtr
));
EXTERN Tcl_Obj * TclLsetFlat _ANSI_ARGS_((Tcl_Interp* interp,
Tcl_Obj* listPtr,
int indexCount,
Tcl_Obj *CONST indexArray[],
Tcl_Obj* valuePtr
));
EXTERN int TclParseBackslash _ANSI_ARGS_((CONST char *src,
int numBytes, int *readPtr, char *dst));
EXTERN int TclParseHex _ANSI_ARGS_((CONST char *src, int numBytes,
Tcl_UniChar *resultPtr));
EXTERN int TclParseInteger _ANSI_ARGS_((CONST char *string,
int numBytes));
EXTERN int TclParseWhiteSpace _ANSI_ARGS_((CONST char *src,
int numBytes, Tcl_Parse *parsePtr, char *typePtr));
EXTERN int TclpObjAccess _ANSI_ARGS_((Tcl_Obj *filename,
int mode));
EXTERN int TclpObjLstat _ANSI_ARGS_((Tcl_Obj *pathPtr,
Tcl_StatBuf *buf));
EXTERN int TclpCheckStackSpace _ANSI_ARGS_((void));
EXTERN Tcl_Obj* TclpTempFileName _ANSI_ARGS_((void));
EXTERN void TclpFinalizeCondition _ANSI_ARGS_((
Tcl_Condition *condPtr));
EXTERN void TclpFinalizeMutex _ANSI_ARGS_((Tcl_Mutex *mutexPtr));
EXTERN void TclpFinalizeThreadData _ANSI_ARGS_((
Tcl_ThreadDataKey *keyPtr));
EXTERN void TclpFinalizeThreadDataKey _ANSI_ARGS_((
Tcl_ThreadDataKey *keyPtr));
EXTERN char * TclpFindExecutable _ANSI_ARGS_((
CONST char *argv0));
EXTERN int TclpFindVariable _ANSI_ARGS_((CONST char *name,
int *lengthPtr));
EXTERN void TclpInitLibraryPath _ANSI_ARGS_((CONST char *argv0));
EXTERN void TclpInitLock _ANSI_ARGS_((void));
EXTERN void TclpInitPlatform _ANSI_ARGS_((void));
EXTERN void TclpInitUnlock _ANSI_ARGS_((void));
EXTERN int TclpLoadFile _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Obj *pathPtr,
CONST char *sym1, CONST char *sym2,
Tcl_PackageInitProc **proc1Ptr,
Tcl_PackageInitProc **proc2Ptr,
ClientData *clientDataPtr,
Tcl_FSUnloadFileProc **unloadProcPtr));
EXTERN Tcl_Obj* TclpObjListVolumes _ANSI_ARGS_((void));
EXTERN void TclpMasterLock _ANSI_ARGS_((void));
EXTERN void TclpMasterUnlock _ANSI_ARGS_((void));
EXTERN int TclpMatchFiles _ANSI_ARGS_((Tcl_Interp *interp,
char *separators, Tcl_DString *dirPtr,
char *pattern, char *tail));
EXTERN int TclpObjNormalizePath _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Obj *pathPtr, int nextCheckpoint));
EXTERN int TclpObjCreateDirectory _ANSI_ARGS_((Tcl_Obj *pathPtr));
EXTERN void TclpNativeJoinPath _ANSI_ARGS_((Tcl_Obj *prefix,
char *joining));
EXTERN Tcl_Obj* TclpNativeSplitPath _ANSI_ARGS_((Tcl_Obj *pathPtr,
int *lenPtr));
EXTERN Tcl_PathType TclpGetNativePathType _ANSI_ARGS_((Tcl_Obj *pathObjPtr,
int *driveNameLengthPtr, Tcl_Obj **driveNameRef));
EXTERN int TclCrossFilesystemCopy _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Obj *source, Tcl_Obj *target));
EXTERN int TclpObjDeleteFile _ANSI_ARGS_((Tcl_Obj *pathPtr));
EXTERN int TclpObjCopyDirectory _ANSI_ARGS_((Tcl_Obj *srcPathPtr,
Tcl_Obj *destPathPtr, Tcl_Obj **errorPtr));
EXTERN int TclpObjCopyFile _ANSI_ARGS_((Tcl_Obj *srcPathPtr,
Tcl_Obj *destPathPtr));
EXTERN int TclpObjRemoveDirectory _ANSI_ARGS_((Tcl_Obj *pathPtr,
int recursive, Tcl_Obj **errorPtr));
EXTERN int TclpObjRenameFile _ANSI_ARGS_((Tcl_Obj *srcPathPtr,
Tcl_Obj *destPathPtr));
EXTERN int TclpMatchInDirectory _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Obj *resultPtr, Tcl_Obj *pathPtr,
CONST char *pattern, Tcl_GlobTypeData *types));
EXTERN Tcl_Obj* TclpObjGetCwd _ANSI_ARGS_((Tcl_Interp *interp));
EXTERN Tcl_Obj* TclpObjLink _ANSI_ARGS_((Tcl_Obj *pathPtr,
Tcl_Obj *toPtr, int linkType));
EXTERN int TclpObjChdir _ANSI_ARGS_((Tcl_Obj *pathPtr));
EXTERN Tcl_Obj* TclFileDirname _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Obj*pathPtr));
EXTERN int TclpObjStat _ANSI_ARGS_((Tcl_Obj *pathPtr, Tcl_StatBuf *buf));
EXTERN Tcl_Channel TclpOpenFileChannel _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Obj *pathPtr, int mode,
int permissions));
EXTERN void TclpPanic _ANSI_ARGS_(TCL_VARARGS(CONST char *,
format));
EXTERN char * TclpReadlink _ANSI_ARGS_((CONST char *fileName,
Tcl_DString *linkPtr));
EXTERN void TclpReleaseFile _ANSI_ARGS_((TclFile file));
EXTERN void TclpSetVariables _ANSI_ARGS_((Tcl_Interp *interp));
EXTERN void TclpUnloadFile _ANSI_ARGS_((Tcl_LoadHandle loadHandle));
EXTERN VOID * TclpThreadDataKeyGet _ANSI_ARGS_((
Tcl_ThreadDataKey *keyPtr));
EXTERN void TclpThreadDataKeyInit _ANSI_ARGS_((
Tcl_ThreadDataKey *keyPtr));
EXTERN void TclpThreadDataKeySet _ANSI_ARGS_((
Tcl_ThreadDataKey *keyPtr, VOID *data));
EXTERN void TclpThreadExit _ANSI_ARGS_((int status));
EXTERN void TclRememberCondition _ANSI_ARGS_((Tcl_Condition *mutex));
EXTERN void TclRememberDataKey _ANSI_ARGS_((Tcl_ThreadDataKey *mutex));
EXTERN VOID TclRememberJoinableThread _ANSI_ARGS_((Tcl_ThreadId id));
EXTERN void TclRememberMutex _ANSI_ARGS_((Tcl_Mutex *mutex));
EXTERN VOID TclSignalExitThread _ANSI_ARGS_((Tcl_ThreadId id,
int result));
EXTERN void TclTransferResult _ANSI_ARGS_((Tcl_Interp *sourceInterp,
int result, Tcl_Interp *targetInterp));
EXTERN Tcl_Obj* TclpNativeToNormalized
_ANSI_ARGS_((ClientData clientData));
EXTERN Tcl_Obj* TclpFilesystemPathType
_ANSI_ARGS_((Tcl_Obj* pathObjPtr));
EXTERN Tcl_PackageInitProc* TclpFindSymbol _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_LoadHandle loadHandle, CONST char *symbol));
EXTERN int TclpDlopen _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Obj *pathPtr,
Tcl_LoadHandle *loadHandle,
Tcl_FSUnloadFileProc **unloadProcPtr));
/*
*----------------------------------------------------------------
* Command procedures in the generic core:
*----------------------------------------------------------------
*/
EXTERN int Tcl_AfterObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_AppendObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_ArrayObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_BinaryObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_BreakObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_CaseObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_CatchObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_CdObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_ClockObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_CloseObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_ConcatObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_ContinueObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_EncodingObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_EofObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_ErrorObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_EvalObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_ExecObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_ExitObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_ExprObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_FblockedObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_FconfigureObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_FcopyObjCmd _ANSI_ARGS_((ClientData dummy,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_FileObjCmd _ANSI_ARGS_((ClientData dummy,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_FileEventObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_FlushObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_ForObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_ForeachObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_FormatObjCmd _ANSI_ARGS_((ClientData dummy,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_GetsObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_GlobalObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_GlobObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_IfObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_IncrObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_InfoObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_InterpObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int argc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_JoinObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_LappendObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_LindexObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_LinsertObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_LlengthObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_ListObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_LoadObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_LrangeObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_LreplaceObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_LsearchObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_LsetObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp* interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_LsortObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_NamespaceObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_OpenObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_PackageObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_PidObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_PutsObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_PwdObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_ReadObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_RegexpObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_RegsubObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_RenameObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_ReturnObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_ScanObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_SeekObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_SetObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_SplitObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_SocketObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_SourceObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_StringObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_SubstObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_SwitchObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_TellObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_TimeObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_TraceObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_UnsetObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_UpdateObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_UplevelObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_UpvarObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_VariableObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_VwaitObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_WhileObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
/*
*----------------------------------------------------------------
* Command procedures found only in the Mac version of the core:
*----------------------------------------------------------------
*/
#ifdef MAC_TCL
EXTERN int Tcl_EchoCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int argc, CONST84 char **argv));
EXTERN int Tcl_LsObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_BeepObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_MacSourceObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
EXTERN int Tcl_ResourceObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
#endif
/*
*----------------------------------------------------------------
* Compilation procedures for commands in the generic core:
*----------------------------------------------------------------
*/
EXTERN int TclCompileAppendCmd _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
EXTERN int TclCompileBreakCmd _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
EXTERN int TclCompileCatchCmd _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
EXTERN int TclCompileContinueCmd _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
EXTERN int TclCompileExprCmd _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
EXTERN int TclCompileForCmd _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
EXTERN int TclCompileForeachCmd _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
EXTERN int TclCompileIfCmd _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
EXTERN int TclCompileIncrCmd _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
EXTERN int TclCompileLappendCmd _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
EXTERN int TclCompileLindexCmd _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
EXTERN int TclCompileListCmd _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
EXTERN int TclCompileLlengthCmd _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
EXTERN int TclCompileLsetCmd _ANSI_ARGS_((Tcl_Interp* interp,
Tcl_Parse* parsePtr, struct CompileEnv* envPtr));
EXTERN int TclCompileRegexpCmd _ANSI_ARGS_((Tcl_Interp* interp,
Tcl_Parse* parsePtr, struct CompileEnv* envPtr));
EXTERN int TclCompileReturnCmd _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
EXTERN int TclCompileSetCmd _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
EXTERN int TclCompileStringCmd _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
EXTERN int TclCompileWhileCmd _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
/*
* Functions defined in generic/tclVar.c and currenttly exported only
* for use by the bytecode compiler and engine. Some of these could later
* be placed in the public interface.
*/
EXTERN Var * TclLookupArrayElement _ANSI_ARGS_((Tcl_Interp *interp,
CONST char *arrayName, CONST char *elName, CONST int flags,
CONST char *msg, CONST int createPart1,
CONST int createPart2, Var *arrayPtr));
EXTERN Var * TclObjLookupVar _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Obj *part1Ptr, CONST char *part2, int flags,
CONST char *msg, CONST int createPart1,
CONST int createPart2, Var **arrayPtrPtr));
EXTERN Tcl_Obj *TclPtrGetVar _ANSI_ARGS_((Tcl_Interp *interp, Var *varPtr,
Var *arrayPtr, CONST char *part1, CONST char *part2,
CONST int flags));
EXTERN Tcl_Obj *TclPtrSetVar _ANSI_ARGS_((Tcl_Interp *interp, Var *varPtr,
Var *arrayPtr, CONST char *part1, CONST char *part2,
Tcl_Obj *newValuePtr, CONST int flags));
EXTERN Tcl_Obj *TclPtrIncrVar _ANSI_ARGS_((Tcl_Interp *interp, Var *varPtr,
Var *arrayPtr, CONST char *part1, CONST char *part2,
CONST long i, CONST int flags));
/*
*----------------------------------------------------------------
* Macros used by the Tcl core to create and release Tcl objects.
* TclNewObj(objPtr) creates a new object denoting an empty string.
* TclDecrRefCount(objPtr) decrements the object's reference count,
* and frees the object if its reference count is zero.
* These macros are inline versions of Tcl_NewObj() and
* Tcl_DecrRefCount(). Notice that the names differ in not having
* a "_" after the "Tcl". Notice also that these macros reference
* their argument more than once, so you should avoid calling them
* with an expression that is expensive to compute or has
* side effects. The ANSI C "prototypes" for these macros are:
*
* EXTERN void TclNewObj _ANSI_ARGS_((Tcl_Obj *objPtr));
* EXTERN void TclDecrRefCount _ANSI_ARGS_((Tcl_Obj *objPtr));
*
* These macros are defined in terms of two macros that depend on
* memory allocator in use: TclAllocObjStorage, TclFreeObjStorage.
* They are defined below.
*----------------------------------------------------------------
*/
#ifdef TCL_COMPILE_STATS
# define TclIncrObjsAllocated() \
tclObjsAlloced++
# define TclIncrObjsFreed() \
tclObjsFreed++
#else
# define TclIncrObjsAllocated()
# define TclIncrObjsFreed()
#endif /* TCL_COMPILE_STATS */
#define TclNewObj(objPtr) \
TclAllocObjStorage(objPtr); \
TclIncrObjsAllocated(); \
(objPtr)->refCount = 0; \
(objPtr)->bytes = tclEmptyStringRep; \
(objPtr)->length = 0; \
(objPtr)->typePtr = NULL
#define TclDecrRefCount(objPtr) \
if (--(objPtr)->refCount <= 0) { \
if (((objPtr)->typePtr != NULL) \
&& ((objPtr)->typePtr->freeIntRepProc != NULL)) { \
(objPtr)->typePtr->freeIntRepProc(objPtr); \
} \
if (((objPtr)->bytes != NULL) \
&& ((objPtr)->bytes != tclEmptyStringRep)) { \
ckfree((char *) (objPtr)->bytes); \
} \
TclFreeObjStorage(objPtr); \
TclIncrObjsFreed(); \
}
#ifdef TCL_MEM_DEBUG
# define TclAllocObjStorage(objPtr) \
(objPtr) = (Tcl_Obj *) \
Tcl_DbCkalloc(sizeof(Tcl_Obj), __FILE__, __LINE__)
# define TclFreeObjStorage(objPtr) \
if ((objPtr)->refCount < -1) { \
panic("Reference count for %lx was negative: %s line %d", \
(objPtr), __FILE__, __LINE__); \
} \
ckfree((char *) (objPtr))
# define TclDbNewObj(objPtr, file, line) \
(objPtr) = (Tcl_Obj *) Tcl_DbCkalloc(sizeof(Tcl_Obj), (file), (line)); \
(objPtr)->refCount = 0; \
(objPtr)->bytes = tclEmptyStringRep; \
(objPtr)->length = 0; \
(objPtr)->typePtr = NULL; \
TclIncrObjsAllocated()
#elif defined(PURIFY)
/*
* The PURIFY mode is like the regular mode, but instead of doing block
* Tcl_Obj allocation and keeping a freed list for efficiency, it always
* allocates and frees a single Tcl_Obj so that tools like Purify can
* better track memory leaks
*/
# define TclAllocObjStorage(objPtr) \
(objPtr) = (Tcl_Obj *) Tcl_Ckalloc(sizeof(Tcl_Obj))
# define TclFreeObjStorage(objPtr) \
ckfree((char *) (objPtr))
#elif defined(TCL_THREADS) && defined(USE_THREAD_ALLOC)
/*
* The TCL_THREADS mode is like the regular mode but allocates Tcl_Obj's
* from per-thread caches.
*/
EXTERN Tcl_Obj *TclThreadAllocObj _ANSI_ARGS_((void));
EXTERN void TclThreadFreeObj _ANSI_ARGS_((Tcl_Obj *));
# define TclAllocObjStorage(objPtr) \
(objPtr) = TclThreadAllocObj()
# define TclFreeObjStorage(objPtr) \
TclThreadFreeObj((objPtr))
#else /* not TCL_MEM_DEBUG */
#ifdef TCL_THREADS
/* declared in tclObj.c */
extern Tcl_Mutex tclObjMutex;
#endif
# define TclAllocObjStorage(objPtr) \
Tcl_MutexLock(&tclObjMutex); \
if (tclFreeObjList == NULL) { \
TclAllocateFreeObjects(); \
} \
(objPtr) = tclFreeObjList; \
tclFreeObjList = (Tcl_Obj *) \
tclFreeObjList->internalRep.otherValuePtr; \
Tcl_MutexUnlock(&tclObjMutex)
# define TclFreeObjStorage(objPtr) \
Tcl_MutexLock(&tclObjMutex); \
(objPtr)->internalRep.otherValuePtr = (VOID *) tclFreeObjList; \
tclFreeObjList = (objPtr); \
Tcl_MutexUnlock(&tclObjMutex)
#endif /* TCL_MEM_DEBUG */
/*
*----------------------------------------------------------------
* Macro used by the Tcl core to set a Tcl_Obj's string representation
* to a copy of the "len" bytes starting at "bytePtr". This code
* works even if the byte array contains NULLs as long as the length
* is correct. Because "len" is referenced multiple times, it should
* be as simple an expression as possible. The ANSI C "prototype" for
* this macro is:
*
* EXTERN void TclInitStringRep _ANSI_ARGS_((Tcl_Obj *objPtr,
* char *bytePtr, int len));
*----------------------------------------------------------------
*/
#define TclInitStringRep(objPtr, bytePtr, len) \
if ((len) == 0) { \
(objPtr)->bytes = tclEmptyStringRep; \
(objPtr)->length = 0; \
} else { \
(objPtr)->bytes = (char *) ckalloc((unsigned) ((len) + 1)); \
memcpy((VOID *) (objPtr)->bytes, (VOID *) (bytePtr), \
(unsigned) (len)); \
(objPtr)->bytes[len] = '\0'; \
(objPtr)->length = (len); \
}
/*
*----------------------------------------------------------------
* Macro used by the Tcl core to get the string representation's
* byte array pointer from a Tcl_Obj. This is an inline version
* of Tcl_GetString(). The macro's expression result is the string
* rep's byte pointer which might be NULL. The bytes referenced by
* this pointer must not be modified by the caller.
* The ANSI C "prototype" for this macro is:
*
* EXTERN char * TclGetString _ANSI_ARGS_((Tcl_Obj *objPtr));
*----------------------------------------------------------------
*/
#define TclGetString(objPtr) \
((objPtr)->bytes? (objPtr)->bytes : Tcl_GetString((objPtr)))
/*
*----------------------------------------------------------------
* Macro used by the Tcl core to compare Unicode strings. On
* big-endian systems we can use the more efficient memcmp, but
* this would not be lexically correct on little-endian systems.
* The ANSI C "prototype" for this macro is:
*
* EXTERN int TclUniCharNcmp _ANSI_ARGS_((CONST Tcl_UniChar *cs,
* CONST Tcl_UniChar *ct, unsigned long n));
*----------------------------------------------------------------
*/
#ifdef WORDS_BIGENDIAN
# define TclUniCharNcmp(cs,ct,n) memcmp((cs),(ct),(n)*sizeof(Tcl_UniChar))
#else /* !WORDS_BIGENDIAN */
# define TclUniCharNcmp Tcl_UniCharNcmp
#endif /* WORDS_BIGENDIAN */
#include "tclIntDecls.h"
# undef TCL_STORAGE_CLASS
# define TCL_STORAGE_CLASS DLLIMPORT
#endif /* _TCLINT */
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