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Initial check-in to mozilla tree: JSRef development is migrating from JSFUN13_BRANCH of /m/src repository to /m/pub
123 lines
4.5 KiB
C
123 lines
4.5 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef jsscope_h___
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#define jsscope_h___
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/*
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* JS symbol tables.
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*/
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#include "prtypes.h"
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#include "prhash.h"
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#include "jsobj.h"
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#include "jsprvtd.h"
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#include "jspubtd.h"
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struct JSScopeOps {
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JSSymbol * (*lookup)(JSContext *cx, JSScope *scope, jsid id,
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prhashcode hash);
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JSSymbol * (*add)(JSContext *cx, JSScope *scope, jsid id,
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JSScopeProperty *sprop);
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JSBool (*remove)(JSContext *cx, JSScope *scope, jsid id);
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void (*clear)(JSContext *cx, JSScope *scope);
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};
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struct JSScope {
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JSObjectMap map; /* base class state */
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JSObject *object; /* object that owns this scope */
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JSScopeProperty *props; /* property list in definition order */
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JSScopeProperty **proptail; /* pointer to pointer to last prop */
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JSScopeOps *ops; /* virtual operations */
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void *data; /* private data specific to ops */
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#ifdef JS_THREADSAFE
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JSThinLock lock; /* binary semaphore protecting scope */
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int32 count; /* entry count for reentrancy */
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#ifdef DEBUG
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const char *file[4]; /* file where lock was (re-)taken */
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unsigned int line[4]; /* line where lock was (re-)taken */
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#endif
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#endif
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};
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struct JSSymbol {
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PRHashEntry entry; /* base class state */
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JSScope *scope; /* pointer to owning scope */
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JSSymbol *next; /* next in type-specific list */
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};
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#define sym_id(sym) ((jsid)(sym)->entry.key)
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#define sym_atom(sym) ((JSAtom *)(sym)->entry.key)
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#define sym_property(sym) ((JSScopeProperty *)(sym)->entry.value)
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struct JSScopeProperty {
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jsrefcount nrefs; /* number of referencing symbols */
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jsval id; /* id passed to getter and setter */
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JSPropertyOp getter; /* getter and setter methods */
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JSPropertyOp setter;
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uint32 slot; /* index in obj->slots vector */
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uint8 attrs; /* attributes, see jsapi.h JSPROP_ */
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uint8 spare; /* reserved for future use */
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JSSymbol *symbols; /* list of aliasing symbols */
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JSScopeProperty *next; /* doubly-linked list linkage */
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JSScopeProperty **prevp;
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};
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/*
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* These macros are designed to decouple getter and setter from sprop, by
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* passing obj2 (in whose scope sprop lives, and in whose scope getter and
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* setter might be stored apart from sprop -- say in scope->opTable[i] for
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* a compressed getter or setter index i that is stored in sprop).
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*/
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#define SPROP_GET(cx,sprop,obj,obj2,vp) ((sprop)->getter(cx,obj,sprop->id,vp))
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#define SPROP_SET(cx,sprop,obj,obj2,vp) ((sprop)->setter(cx,obj,sprop->id,vp))
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extern JSScope *
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js_GetMutableScope(JSContext *cx, JSObject *obj);
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extern JSScope *
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js_MutateScope(JSContext *cx, JSObject *obj, jsid id,
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JSPropertyOp getter, JSPropertyOp setter, uintN attrs,
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JSScopeProperty **propp);
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extern JSScope *
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js_NewScope(JSContext *cx, jsrefcount nrefs, JSObjectOps *ops, JSClass *clasp,
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JSObject *obj);
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extern void
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js_DestroyScope(JSContext *cx, JSScope *scope);
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extern prhashcode
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js_HashValue(jsval v);
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extern jsval
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js_IdToValue(jsid id);
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extern JSScopeProperty *
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js_NewScopeProperty(JSContext *cx, JSScope *scope, jsid id,
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JSPropertyOp getter, JSPropertyOp setter, uintN attrs);
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extern void
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js_DestroyScopeProperty(JSContext *cx, JSScope *scope, JSScopeProperty *sprop);
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extern JSScopeProperty *
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js_HoldScopeProperty(JSContext *cx, JSScope *scope, JSScopeProperty *sprop);
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extern JSScopeProperty *
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js_DropScopeProperty(JSContext *cx, JSScope *scope, JSScopeProperty *sprop);
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#endif /* jsscope_h___ */
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