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-/*
- * tclOOInt.h --
- *
- * This file contains the structure definitions and some of the function
- * declarations for the object-system (NB: not Tcl_Obj, but ::oo).
- *
- * Copyright (c) 2006-2011 by Donal K. Fellows
- *
- * See the file "license.terms" for information on usage and redistribution of
- * this file, and for a DISCLAIMER OF ALL WARRANTIES.
- */
-
-#ifndef TCL_OO_INTERNAL_H
-#define TCL_OO_INTERNAL_H 1
-
-#include "tclInt.h"
-#include "tclOO.h"
-
-/*
- * Hack to make things work with Objective C. Note that ObjC isn't really
- * supported, but we don't want to to be actively hostile to it. [Bug 2163447]
- */
-
-#ifdef __OBJC__
-#define Class TclOOClass
-#define Object TclOOObject
-#endif /* __OBJC__ */
-
-/*
- * Forward declarations.
- */
-
-struct CallChain;
-struct Class;
-struct Foundation;
-struct Object;
-
-/*
- * The data that needs to be stored per method. This record is used to collect
- * information about all sorts of methods, including forwards, constructors
- * and destructors.
- */
-
-typedef struct Method {
- const Tcl_MethodType *typePtr;
- /* The type of method. If NULL, this is a
- * special flag record which is just used for
- * the setting of the flags field. */
- int refCount;
- ClientData clientData; /* Type-specific data. */
- Tcl_Obj *namePtr; /* Name of the method. */
- struct Object *declaringObjectPtr;
- /* The object that declares this method, or
- * NULL if it was declared by a class. */
- struct Class *declaringClassPtr;
- /* The class that declares this method, or
- * NULL if it was declared directly on an
- * object. */
- int flags; /* Assorted flags. Includes whether this
- * method is public/exported or not. */
-} Method;
-
-/*
- * Pre- and post-call callbacks, to allow procedure-like methods to be fine
- * tuned in their behaviour.
- */
-
-typedef int (TclOO_PreCallProc)(ClientData clientData, Tcl_Interp *interp,
- Tcl_ObjectContext context, Tcl_CallFrame *framePtr, int *isFinished);
-typedef int (TclOO_PostCallProc)(ClientData clientData, Tcl_Interp *interp,
- Tcl_ObjectContext context, Tcl_Namespace *namespacePtr, int result);
-typedef void (TclOO_PmCDDeleteProc)(ClientData clientData);
-typedef ClientData (TclOO_PmCDCloneProc)(ClientData clientData);
-
-/*
- * Procedure-like methods have the following extra information.
- */
-
-typedef struct ProcedureMethod {
- int version; /* Version of this structure. Currently must
- * be 0. */
- Proc *procPtr; /* Core of the implementation of the method;
- * includes the argument definition and the
- * body bytecodes. */
- int flags; /* Flags to control features. */
- int refCount;
- ClientData clientData;
- TclOO_PmCDDeleteProc *deleteClientdataProc;
- TclOO_PmCDCloneProc *cloneClientdataProc;
- ProcErrorProc *errProc; /* Replacement error handler. */
- TclOO_PreCallProc *preCallProc;
- /* Callback to allow for additional setup
- * before the method executes. */
- TclOO_PostCallProc *postCallProc;
- /* Callback to allow for additional cleanup
- * after the method executes. */
- GetFrameInfoValueProc *gfivProc;
- /* Callback to allow for fine tuning of how
- * the method reports itself. */
-} ProcedureMethod;
-
-#define TCLOO_PROCEDURE_METHOD_VERSION 0
-
-/*
- * Flags for use in a ProcedureMethod.
- *
- * When the USE_DECLARER_NS flag is set, the method will use the namespace of
- * the object or class that declared it (or the clone of it, if it was from
- * such that the implementation of the method came to the particular use)
- * instead of the namespace of the object on which the method was invoked.
- * This flag must be distinct from all others that are associated with
- * methods.
- */
-
-#define USE_DECLARER_NS 0x80
-
-/*
- * Forwarded methods have the following extra information.
- */
-
-typedef struct ForwardMethod {
- Tcl_Obj *prefixObj; /* The list of values to use to replace the
- * object and method name with. Will be a
- * non-empty list. */
- int fullyQualified; /* If 1, the command name is fully qualified
- * and we should let the default Tcl mechanism
- * handle the command lookup because it is
- * more efficient. If 0, we need to do a
- * specialized lookup based on the current
- * object's namespace. */
-} ForwardMethod;
-
-/*
- * Helper definitions that declare a "list" array. The two varieties are
- * either optimized for simplicity (in the case that the whole array is
- * typically assigned at once) or efficiency (in the case that the array is
- * expected to be expanded over time). These lists are designed to be iterated
- * over with the help of the FOREACH macro (see later in this file).
- *
- * The "num" field always counts the number of listType_t elements used in the
- * "list" field. When a "size" field exists, it describes how many elements
- * are present in the list; when absent, exactly "num" elements are present.
- */
-
-#define LIST_STATIC(listType_t) \
- struct { int num; listType_t *list; }
-#define LIST_DYNAMIC(listType_t) \
- struct { int num, size; listType_t *list; }
-
-/*
- * Now, the definition of what an object actually is.
- */
-
-typedef struct Object {
- struct Foundation *fPtr; /* The basis for the object system. Putting
- * this here allows the avoidance of quite a
- * lot of hash lookups on the critical path
- * for object invokation and creation. */
- Tcl_Namespace *namespacePtr;/* This object's tame namespace. */
- Tcl_Command command; /* Reference to this object's public
- * command. */
- Tcl_Command myCommand; /* Reference to this object's internal
- * command. */
- struct Class *selfCls; /* This object's class. */
- Tcl_HashTable *methodsPtr; /* Object-local Tcl_Obj (method name) to
- * Method* mapping. */
- LIST_STATIC(struct Class *) mixins;
- /* Classes mixed into this object. */
- LIST_STATIC(Tcl_Obj *) filters;
- /* List of filter names. */
- struct Class *classPtr; /* All classes have this non-NULL; it points
- * to the class structure. Everything else has
- * this NULL. */
- int refCount; /* Number of strong references to this object.
- * Note that there may be many more weak
- * references; this mechanism is there to
- * avoid Tcl_Preserve. */
- int flags;
- int creationEpoch; /* Unique value to make comparisons of objects
- * easier. */
- int epoch; /* Per-object epoch, incremented when the way
- * an object should resolve call chains is
- * changed. */
- Tcl_HashTable *metadataPtr; /* Mapping from pointers to metadata type to
- * the ClientData values that are the values
- * of each piece of attached metadata. This
- * field starts out as NULL and is only
- * allocated if metadata is attached. */
- Tcl_Obj *cachedNameObj; /* Cache of the name of the object. */
- Tcl_HashTable *chainCache; /* Place to keep unused contexts. This table
- * is indexed by method name as Tcl_Obj. */
- Tcl_ObjectMapMethodNameProc *mapMethodNameProc;
- /* Function to allow remapping of method
- * names. For itcl-ng. */
- LIST_STATIC(Tcl_Obj *) variables;
-} Object;
-
-#define OBJECT_DELETED 1 /* Flag to say that an object has been
- * destroyed. */
-#define DESTRUCTOR_CALLED 2 /* Flag to say that the destructor has been
- * called. */
-#define ROOT_OBJECT 0x1000 /* Flag to say that this object is the root of
- * the class hierarchy and should be treated
- * specially during teardown. */
-#define FILTER_HANDLING 0x2000 /* Flag set when the object is processing a
- * filter; when set, filters are *not*
- * processed on the object, preventing nasty
- * recursive filtering problems. */
-#define USE_CLASS_CACHE 0x4000 /* Flag set to say that the object is a pure
- * instance of the class, and has had nothing
- * added that changes the dispatch chain (i.e.
- * no methods, mixins, or filters. */
-#define ROOT_CLASS 0x8000 /* Flag to say that this object is the root
- * class of classes, and should be treated
- * specially during teardown (and in a few
- * other spots). */
-#define FORCE_UNKNOWN 0x10000 /* States that we are *really* looking up the
- * unknown method handler at that point. */
-
-/*
- * And the definition of a class. Note that every class also has an associated
- * object, through which it is manipulated.
- */
-
-typedef struct Class {
- Object *thisPtr; /* Reference to the object associated with
- * this class. */
- int refCount; /* Number of strong references to this class.
- * Weak references are not counted; the
- * purpose of this is to avoid Tcl_Preserve as
- * that is quite slow. */
- int flags; /* Assorted flags. */
- LIST_STATIC(struct Class *) superclasses;
- /* List of superclasses, used for generation
- * of method call chains. */
- LIST_DYNAMIC(struct Class *) subclasses;
- /* List of subclasses, used to ensure deletion
- * of dependent entities happens properly when
- * the class itself is deleted. */
- LIST_DYNAMIC(Object *) instances;
- /* List of instances, used to ensure deletion
- * of dependent entities happens properly when
- * the class itself is deleted. */
- LIST_STATIC(Tcl_Obj *) filters;
- /* List of filter names, used for generation
- * of method call chains. */
- LIST_STATIC(struct Class *) mixins;
- /* List of mixin classes, used for generation
- * of method call chains. */
- LIST_DYNAMIC(struct Class *) mixinSubs;
- /* List of classes that this class is mixed
- * into, used to ensure deletion of dependent
- * entities happens properly when the class
- * itself is deleted. */
- Tcl_HashTable classMethods; /* Hash table of all methods. Hash maps from
- * the (Tcl_Obj*) method name to the (Method*)
- * method record. */
- Method *constructorPtr; /* Method record of the class constructor (if
- * any). */
- Method *destructorPtr; /* Method record of the class destructor (if
- * any). */
- Tcl_HashTable *metadataPtr; /* Mapping from pointers to metadata type to
- * the ClientData values that are the values
- * of each piece of attached metadata. This
- * field starts out as NULL and is only
- * allocated if metadata is attached. */
- struct CallChain *constructorChainPtr;
- struct CallChain *destructorChainPtr;
- Tcl_HashTable *classChainCache;
- /* Places where call chains are stored. For
- * constructors, the class chain is always
- * used. For destructors and ordinary methods,
- * the class chain is only used when the
- * object doesn't override with its own mixins
- * (and filters and method implementations for
- * when getting method chains). */
- LIST_STATIC(Tcl_Obj *) variables;
-} Class;
-
-/*
- * The foundation of the object system within an interpreter contains
- * references to the key classes and namespaces, together with a few other
- * useful bits and pieces. Probably ought to eventually go in the Interp
- * structure itself.
- */
-
-typedef struct ThreadLocalData {
- int nsCount; /* Master epoch counter is used for keeping
- * the values used in Tcl_Obj internal
- * representations sane. Must be thread-local
- * because Tcl_Objs can cross interpreter
- * boundaries within a thread (objects don't
- * generally cross threads). */
-} ThreadLocalData;
-
-typedef struct Foundation {
- Tcl_Interp *interp;
- Class *objectCls; /* The root of the object system. */
- Class *classCls; /* The class of all classes. */
- Tcl_Namespace *ooNs; /* Master ::oo namespace. */
- Tcl_Namespace *defineNs; /* Namespace containing special commands for
- * manipulating objects and classes. The
- * "oo::define" command acts as a special kind
- * of ensemble for this namespace. */
- Tcl_Namespace *objdefNs; /* Namespace containing special commands for
- * manipulating objects and classes. The
- * "oo::objdefine" command acts as a special
- * kind of ensemble for this namespace. */
- Tcl_Namespace *helpersNs; /* Namespace containing the commands that are
- * only valid when executing inside a
- * procedural method. */
- int epoch; /* Used to invalidate method chains when the
- * class structure changes. */
- ThreadLocalData *tsdPtr; /* Counter so we can allocate a unique
- * namespace to each object. */
- Tcl_Obj *unknownMethodNameObj;
- /* Shared object containing the name of the
- * unknown method handler method. */
- Tcl_Obj *constructorName; /* Shared object containing the "name" of a
- * constructor. */
- Tcl_Obj *destructorName; /* Shared object containing the "name" of a
- * destructor. */
- Tcl_Obj *clonedName; /* Shared object containing the name of a
- * "<cloned>" pseudo-constructor. */
-} Foundation;
-
-/*
- * A call context structure is built when a method is called. They contain the
- * chain of method implementations that are to be invoked by a particular
- * call, and the process of calling walks the chain, with the [next] command
- * proceeding to the next entry in the chain.
- */
-
-#define CALL_CHAIN_STATIC_SIZE 4
-
-struct MInvoke {
- Method *mPtr; /* Reference to the method implementation
- * record. */
- int isFilter; /* Whether this is a filter invokation. */
- Class *filterDeclarer; /* What class decided to add the filter; if
- * NULL, it was added by the object. */
-};
-
-typedef struct CallChain {
- int objectCreationEpoch; /* The object's creation epoch. Note that the
- * object reference is not stored in the call
- * chain; it is in the call context. */
- int objectEpoch; /* Local (object structure) epoch counter
- * snapshot. */
- int epoch; /* Global (class structure) epoch counter
- * snapshot. */
- int flags; /* Assorted flags, see below. */
- int refCount; /* Reference count. */
- int numChain; /* Size of the call chain. */
- struct MInvoke *chain; /* Array of call chain entries. May point to
- * staticChain if the number of entries is
- * small. */
- struct MInvoke staticChain[CALL_CHAIN_STATIC_SIZE];
-} CallChain;
-
-typedef struct CallContext {
- Object *oPtr; /* The object associated with this call. */
- int index; /* Index into the call chain of the currently
- * executing method implementation. */
- int skip; /* Current number of arguments to skip; can
- * vary depending on whether it is a direct
- * method call or a continuation via the
- * [next] command. */
- CallChain *callPtr; /* The actual call chain. */
-} CallContext;
-
-/*
- * Bits for the 'flags' field of the call chain.
- */
-
-#define PUBLIC_METHOD 0x01 /* This is a public (exported) method. */
-#define PRIVATE_METHOD 0x02 /* This is a private (class's direct instances
- * only) method. */
-#define OO_UNKNOWN_METHOD 0x04 /* This is an unknown method. */
-#define CONSTRUCTOR 0x08 /* This is a constructor. */
-#define DESTRUCTOR 0x10 /* This is a destructor. */
-
-/*
- * Structure containing definition information about basic class methods.
- */
-
-typedef struct {
- const char *name; /* Name of the method in question. */
- int isPublic; /* Whether the method is public by default. */
- Tcl_MethodType definition; /* How to call the method. */
-} DeclaredClassMethod;
-
-/*
- *----------------------------------------------------------------
- * Commands relating to OO support.
- *----------------------------------------------------------------
- */
-
-MODULE_SCOPE int TclOOInit(Tcl_Interp *interp);
-MODULE_SCOPE int TclOODefineObjCmd(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOOObjDefObjCmd(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOODefineConstructorObjCmd(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOODefineDeleteMethodObjCmd(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOODefineDestructorObjCmd(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOODefineExportObjCmd(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOODefineForwardObjCmd(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOODefineMethodObjCmd(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOODefineRenameMethodObjCmd(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOODefineUnexportObjCmd(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOODefineClassObjCmd(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOODefineSelfObjCmd(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOOUnknownDefinition(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOOCopyObjectCmd(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOONextObjCmd(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOONextToObjCmd(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOOSelfObjCmd(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const *objv);
-
-/*
- * Method implementations (in tclOOBasic.c).
- */
-
-MODULE_SCOPE int TclOO_Class_Create(ClientData clientData,
- Tcl_Interp *interp, Tcl_ObjectContext context,
- int objc, Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOO_Class_CreateNs(ClientData clientData,
- Tcl_Interp *interp, Tcl_ObjectContext context,
- int objc, Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOO_Class_New(ClientData clientData,
- Tcl_Interp *interp, Tcl_ObjectContext context,
- int objc, Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOO_Object_Destroy(ClientData clientData,
- Tcl_Interp *interp, Tcl_ObjectContext context,
- int objc, Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOO_Object_Eval(ClientData clientData,
- Tcl_Interp *interp, Tcl_ObjectContext context,
- int objc, Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOO_Object_LinkVar(ClientData clientData,
- Tcl_Interp *interp, Tcl_ObjectContext context,
- int objc, Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOO_Object_Unknown(ClientData clientData,
- Tcl_Interp *interp, Tcl_ObjectContext context,
- int objc, Tcl_Obj *const *objv);
-MODULE_SCOPE int TclOO_Object_VarName(ClientData clientData,
- Tcl_Interp *interp, Tcl_ObjectContext context,
- int objc, Tcl_Obj *const *objv);
-
-/*
- * Private definitions, some of which perhaps ought to be exposed properly or
- * maybe just put in the internal stubs table.
- */
-
-MODULE_SCOPE void TclOOAddToInstances(Object *oPtr, Class *clsPtr);
-MODULE_SCOPE void TclOOAddToMixinSubs(Class *subPtr, Class *mixinPtr);
-MODULE_SCOPE void TclOOAddToSubclasses(Class *subPtr, Class *superPtr);
-MODULE_SCOPE int TclNRNewObjectInstance(Tcl_Interp *interp,
- Tcl_Class cls, const char *nameStr,
- const char *nsNameStr, int objc,
- Tcl_Obj *const *objv, int skip,
- Tcl_Object *objectPtr);
-MODULE_SCOPE int TclOODefineSlots(Foundation *fPtr);
-MODULE_SCOPE void TclOODeleteChain(CallChain *callPtr);
-MODULE_SCOPE void TclOODeleteChainCache(Tcl_HashTable *tablePtr);
-MODULE_SCOPE void TclOODeleteContext(CallContext *contextPtr);
-MODULE_SCOPE void TclOODelMethodRef(Method *method);
-MODULE_SCOPE CallContext *TclOOGetCallContext(Object *oPtr,
- Tcl_Obj *methodNameObj, int flags,
- Tcl_Obj *cacheInThisObj);
-MODULE_SCOPE CallChain *TclOOGetStereotypeCallChain(Class *clsPtr,
- Tcl_Obj *methodNameObj, int flags);
-MODULE_SCOPE Foundation *TclOOGetFoundation(Tcl_Interp *interp);
-MODULE_SCOPE Tcl_Obj * TclOOGetFwdFromMethod(Method *mPtr);
-MODULE_SCOPE Proc * TclOOGetProcFromMethod(Method *mPtr);
-MODULE_SCOPE Tcl_Obj * TclOOGetMethodBody(Method *mPtr);
-MODULE_SCOPE int TclOOGetSortedClassMethodList(Class *clsPtr,
- int flags, const char ***stringsPtr);
-MODULE_SCOPE int TclOOGetSortedMethodList(Object *oPtr, int flags,
- const char ***stringsPtr);
-MODULE_SCOPE int TclOOInit(Tcl_Interp *interp);
-MODULE_SCOPE void TclOOInitInfo(Tcl_Interp *interp);
-MODULE_SCOPE int TclOOInvokeContext(ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const objv[]);
-MODULE_SCOPE int TclNRObjectContextInvokeNext(Tcl_Interp *interp,
- Tcl_ObjectContext context, int objc,
- Tcl_Obj *const *objv, int skip);
-MODULE_SCOPE void TclOONewBasicMethod(Tcl_Interp *interp, Class *clsPtr,
- const DeclaredClassMethod *dcm);
-MODULE_SCOPE int TclOONRUpcatch(ClientData ignored, Tcl_Interp *interp,
- int objc, Tcl_Obj *const objv[]);
-MODULE_SCOPE Tcl_Obj * TclOOObjectName(Tcl_Interp *interp, Object *oPtr);
-MODULE_SCOPE void TclOORemoveFromInstances(Object *oPtr, Class *clsPtr);
-MODULE_SCOPE void TclOORemoveFromMixinSubs(Class *subPtr,
- Class *mixinPtr);
-MODULE_SCOPE void TclOORemoveFromSubclasses(Class *subPtr,
- Class *superPtr);
-MODULE_SCOPE Tcl_Obj * TclOORenderCallChain(Tcl_Interp *interp,
- CallChain *callPtr);
-MODULE_SCOPE void TclOOStashContext(Tcl_Obj *objPtr,
- CallContext *contextPtr);
-MODULE_SCOPE void TclOOSetupVariableResolver(Tcl_Namespace *nsPtr);
-MODULE_SCOPE int TclOOUpcatchCmd(ClientData ignored,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *const objv[]);
-
-/*
- * Include all the private API, generated from tclOO.decls.
- */
-
-#include "tclOOIntDecls.h"
-
-/*
- * A convenience macro for iterating through the lists used in the internal
- * memory management of objects. This is a bit gnarly because we want to do
- * the assignment of the picked-out value only when the body test succeeds,
- * but we cannot rely on the assigned value being useful, forcing us to do
- * some nasty stuff with the comma operator. The compiler's optimizer should
- * be able to sort it all out!
- *
- * REQUIRES DECLARATION: int i;
- */
-
-#define FOREACH(var,ary) \
- for(i=0 ; (i<(ary).num?((var=(ary).list[i]),1):0) ; i++)
-
-/*
- * Convenience macros for iterating through hash tables. FOREACH_HASH_DECLS
- * sets up the declarations needed for the main macro, FOREACH_HASH, which
- * does the actual iteration. FOREACH_HASH_VALUE is a restricted version that
- * only iterates over values.
- */
-
-#define FOREACH_HASH_DECLS \
- Tcl_HashEntry *hPtr;Tcl_HashSearch search
-#define FOREACH_HASH(key,val,tablePtr) \
- for(hPtr=Tcl_FirstHashEntry((tablePtr),&search); hPtr!=NULL ? \
- ((key)=(void *)Tcl_GetHashKey((tablePtr),hPtr),\
- (val)=Tcl_GetHashValue(hPtr),1):0; hPtr=Tcl_NextHashEntry(&search))
-#define FOREACH_HASH_VALUE(val,tablePtr) \
- for(hPtr=Tcl_FirstHashEntry((tablePtr),&search); hPtr!=NULL ? \
- ((val)=Tcl_GetHashValue(hPtr),1):0;hPtr=Tcl_NextHashEntry(&search))
-
-/*
- * Convenience macro for duplicating a list. Needs no external declaration,
- * but all arguments are used multiple times and so must have no side effects.
- */
-
-#undef DUPLICATE /* prevent possible conflict with definition in WINAPI nb30.h */
-#define DUPLICATE(target,source,type) \
- do { \
- register unsigned len = sizeof(type) * ((target).num=(source).num);\
- if (len != 0) { \
- memcpy(((target).list=(type*)ckalloc(len)), (source).list, len); \
- } else { \
- (target).list = NULL; \
- } \
- } while(0)
-
-/*
- * Alternatives to Tcl_Preserve/Tcl_EventuallyFree/Tcl_Release.
- */
-
-#define AddRef(ptr) ((ptr)->refCount++)
-#define DelRef(ptr) do { \
- if (--(ptr)->refCount < 1) { \
- ckfree((char *) (ptr)); \
- } \
- } while(0)
-
-#endif /* TCL_OO_INTERNAL_H */
-
-/*
- * Local Variables:
- * mode: c
- * c-basic-offset: 4
- * fill-column: 78
- * End:
- */