/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- * vim: set ts=8 sw=4 et tw=78: * * ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is Mozilla Communicator client code, released * March 31, 1998. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * * Alternatively, the contents of this file may be used under the terms of * either of the GNU General Public License Version 2 or later (the "GPL"), * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ #ifndef jsobj_h___ #define jsobj_h___ /* * JS object definitions. * * A JS object consists of a possibly-shared object descriptor containing * ordered property names, called the map; and a dense vector of property * values, called slots. The map/slot pointer pair is GC'ed, while the map * is reference counted and the slot vector is malloc'ed. */ #include "jshash.h" /* Added by JSIFY */ #include "jsprvtd.h" #include "jspubtd.h" JS_BEGIN_EXTERN_C struct JSObjectMap { jsrefcount nrefs; /* count of all referencing objects */ JSObjectOps *ops; /* high level object operation vtable */ uint32 freeslot; /* index of next free slot in object */ }; /* Shorthand macros for frequently-made calls. */ #define OBJ_LOOKUP_PROPERTY(cx,obj,id,objp,propp) \ (obj)->map->ops->lookupProperty(cx,obj,id,objp,propp) #define OBJ_DEFINE_PROPERTY(cx,obj,id,value,getter,setter,attrs,propp) \ (obj)->map->ops->defineProperty(cx,obj,id,value,getter,setter,attrs,propp) #define OBJ_GET_PROPERTY(cx,obj,id,vp) \ (obj)->map->ops->getProperty(cx,obj,id,vp) #define OBJ_SET_PROPERTY(cx,obj,id,vp) \ (obj)->map->ops->setProperty(cx,obj,id,vp) #define OBJ_GET_ATTRIBUTES(cx,obj,id,prop,attrsp) \ (obj)->map->ops->getAttributes(cx,obj,id,prop,attrsp) #define OBJ_SET_ATTRIBUTES(cx,obj,id,prop,attrsp) \ (obj)->map->ops->setAttributes(cx,obj,id,prop,attrsp) #define OBJ_DELETE_PROPERTY(cx,obj,id,rval) \ (obj)->map->ops->deleteProperty(cx,obj,id,rval) #define OBJ_DEFAULT_VALUE(cx,obj,hint,vp) \ (obj)->map->ops->defaultValue(cx,obj,hint,vp) #define OBJ_ENUMERATE(cx,obj,enum_op,statep,idp) \ (obj)->map->ops->enumerate(cx,obj,enum_op,statep,idp) #define OBJ_CHECK_ACCESS(cx,obj,id,mode,vp,attrsp) \ (obj)->map->ops->checkAccess(cx,obj,id,mode,vp,attrsp) /* These four are time-optimized to avoid stub calls. */ #define OBJ_THIS_OBJECT(cx,obj) \ ((obj)->map->ops->thisObject \ ? (obj)->map->ops->thisObject(cx,obj) \ : (obj)) #define OBJ_DROP_PROPERTY(cx,obj,prop) \ ((obj)->map->ops->dropProperty \ ? (obj)->map->ops->dropProperty(cx,obj,prop) \ : (void)0) #define OBJ_GET_REQUIRED_SLOT(cx,obj,slot) \ ((obj)->map->ops->getRequiredSlot \ ? (obj)->map->ops->getRequiredSlot(cx, obj, slot) \ : JSVAL_VOID) #define OBJ_SET_REQUIRED_SLOT(cx,obj,slot,v) \ ((obj)->map->ops->setRequiredSlot \ ? (obj)->map->ops->setRequiredSlot(cx, obj, slot, v) \ : JS_TRUE) #define OBJ_TO_INNER_OBJECT(cx,obj) \ JS_BEGIN_MACRO \ JSClass *clasp_ = OBJ_GET_CLASS(cx, obj); \ if (clasp_->flags & JSCLASS_IS_EXTENDED) { \ JSExtendedClass *xclasp_ = (JSExtendedClass*)clasp_; \ if (xclasp_->innerObject) \ obj = xclasp_->innerObject(cx, obj); \ } \ JS_END_MACRO #define OBJ_TO_OUTER_OBJECT(cx,obj) \ JS_BEGIN_MACRO \ JSClass *clasp_ = OBJ_GET_CLASS(cx, obj); \ if (clasp_->flags & JSCLASS_IS_EXTENDED) { \ JSExtendedClass *xclasp_ = (JSExtendedClass*)clasp_; \ if (xclasp_->outerObject) \ obj = xclasp_->outerObject(cx, obj); \ } \ JS_END_MACRO #define JS_INITIAL_NSLOTS 5 /* * When JSObject.dslots is not null, JSObject.dslots[-1] records the number of * available slots. */ struct JSObject { JSObjectMap *map; jsuword classword; jsval fslots[JS_INITIAL_NSLOTS]; jsval *dslots; /* dynamically allocated slots */ }; #define JSSLOT_PROTO 0 #define JSSLOT_PARENT 1 #define JSSLOT_PRIVATE 2 #define JSSLOT_START(clasp) (((clasp)->flags & JSCLASS_HAS_PRIVATE) \ ? JSSLOT_PRIVATE + 1 \ : JSSLOT_PARENT + 1) #define JSSLOT_FREE(clasp) (JSSLOT_START(clasp) \ + JSCLASS_RESERVED_SLOTS(clasp)) /* * STOBJ prefix means Single Threaded Object. Use the following fast macros to * directly manipulate slots in obj when only one thread can access obj and * when obj->map->freeslot can be inconsistent with slots. */ #define STOBJ_NSLOTS(obj) \ ((obj)->dslots ? (uint32)(obj)->dslots[-1] : (uint32)JS_INITIAL_NSLOTS) #define STOBJ_GET_SLOT(obj,slot) \ ((slot) < JS_INITIAL_NSLOTS \ ? (obj)->fslots[(slot)] \ : (JS_ASSERT((slot) < (uint32)(obj)->dslots[-1]), \ (obj)->dslots[(slot) - JS_INITIAL_NSLOTS])) #define STOBJ_SET_SLOT(obj,slot,value) \ ((slot) < JS_INITIAL_NSLOTS \ ? (obj)->fslots[(slot)] = (value) \ : (JS_ASSERT((slot) < (uint32)(obj)->dslots[-1]), \ (obj)->dslots[(slot) - JS_INITIAL_NSLOTS] = (value))) #define STOBJ_GET_PROTO(obj) \ JSVAL_TO_OBJECT((obj)->fslots[JSSLOT_PROTO]) #define STOBJ_SET_PROTO(obj,proto) \ (void)(STOBJ_NULLSAFE_SET_DELEGATE(proto), \ (obj)->fslots[JSSLOT_PROTO] = OBJECT_TO_JSVAL(proto)) #define STOBJ_CLEAR_PROTO(obj) \ ((obj)->fslots[JSSLOT_PROTO] = JSVAL_NULL) #define STOBJ_GET_PARENT(obj) \ JSVAL_TO_OBJECT((obj)->fslots[JSSLOT_PARENT]) #define STOBJ_SET_PARENT(obj,parent) \ (void)(STOBJ_NULLSAFE_SET_DELEGATE(parent), \ (obj)->fslots[JSSLOT_PARENT] = OBJECT_TO_JSVAL(parent)) #define STOBJ_CLEAR_PARENT(obj) \ ((obj)->fslots[JSSLOT_PARENT] = JSVAL_NULL) /* * We use JSObject.classword to store both JSClass* and the delegate and system * flags in the two least significant bits. We do *not* synchronize updates of * obj->classword -- API clients must take care. */ #define STOBJ_GET_CLASS(obj) ((JSClass *)((obj)->classword & ~3)) #define STOBJ_IS_DELEGATE(obj) (((obj)->classword & 1) != 0) #define STOBJ_SET_DELEGATE(obj) ((obj)->classword |= 1) #define STOBJ_NULLSAFE_SET_DELEGATE(obj) \ (!(obj) || STOBJ_SET_DELEGATE((JSObject*)obj)) #define STOBJ_IS_SYSTEM(obj) (((obj)->classword & 2) != 0) #define STOBJ_SET_SYSTEM(obj) ((obj)->classword |= 2) #define STOBJ_GET_PRIVATE(obj) \ (JS_ASSERT(JSVAL_IS_INT(STOBJ_GET_SLOT(obj, JSSLOT_PRIVATE))), \ JSVAL_TO_PRIVATE(STOBJ_GET_SLOT(obj, JSSLOT_PRIVATE))) #define OBJ_CHECK_SLOT(obj,slot) \ JS_ASSERT(slot < (obj)->map->freeslot) #define LOCKED_OBJ_GET_SLOT(obj,slot) \ (OBJ_CHECK_SLOT(obj, slot), STOBJ_GET_SLOT(obj, slot)) #define LOCKED_OBJ_SET_SLOT(obj,slot,value) \ (OBJ_CHECK_SLOT(obj, slot), STOBJ_SET_SLOT(obj, slot, value)) /* * NB: Don't call LOCKED_OBJ_SET_SLOT or STOBJ_SET_SLOT for a write to a slot * that may contain a function reference already, or where the new value is a * function ref, and the object's scope may be branded with a property cache * structural type capability that distinguishes versions of the object with * and without the function property. Instead use LOCKED_OBJ_WRITE_BARRIER or * a fast inline equivalent (JSOP_SETNAME/JSOP_SETPROP cases in jsinterp.c). */ #define LOCKED_OBJ_WRITE_BARRIER(cx,obj,slot,newval) \ JS_BEGIN_MACRO \ JSScope *scope_ = OBJ_SCOPE(obj); \ JS_ASSERT(scope_->object == (obj)); \ GC_WRITE_BARRIER(cx, scope_, LOCKED_OBJ_GET_SLOT(obj, slot), newval); \ LOCKED_OBJ_SET_SLOT(obj, slot, newval); \ JS_END_MACRO #define LOCKED_OBJ_GET_PROTO(obj) \ (OBJ_CHECK_SLOT(obj, JSSLOT_PROTO), STOBJ_GET_PROTO(obj)) #define LOCKED_OBJ_SET_PROTO(obj,proto) \ (OBJ_CHECK_SLOT(obj, JSSLOT_PROTO), STOBJ_SET_PROTO(obj, proto)) #define LOCKED_OBJ_GET_PARENT(obj) \ (OBJ_CHECK_SLOT(obj, JSSLOT_PARENT), STOBJ_GET_PARENT(obj)) #define LOCKED_OBJ_SET_PARENT(obj,parent) \ (OBJ_CHECK_SLOT(obj, JSSLOT_PARENT), STOBJ_SET_PARENT(obj, parent)) #define LOCKED_OBJ_GET_CLASS(obj) \ STOBJ_GET_CLASS(obj) #define LOCKED_OBJ_GET_PRIVATE(obj) \ (OBJ_CHECK_SLOT(obj, JSSLOT_PRIVATE), STOBJ_GET_PRIVATE(obj)) #ifdef JS_THREADSAFE /* Thread-safe functions and wrapper macros for accessing slots in obj. */ #define OBJ_GET_SLOT(cx,obj,slot) \ (OBJ_CHECK_SLOT(obj, slot), \ (OBJ_IS_NATIVE(obj) && OBJ_SCOPE(obj)->title.ownercx == cx) \ ? LOCKED_OBJ_GET_SLOT(obj, slot) \ : js_GetSlotThreadSafe(cx, obj, slot)) #define OBJ_SET_SLOT(cx,obj,slot,value) \ JS_BEGIN_MACRO \ OBJ_CHECK_SLOT(obj, slot); \ if (OBJ_IS_NATIVE(obj) && OBJ_SCOPE(obj)->title.ownercx == cx) \ LOCKED_OBJ_WRITE_BARRIER(cx, obj, slot, value); \ else \ js_SetSlotThreadSafe(cx, obj, slot, value); \ JS_END_MACRO /* * If thread-safe, define an OBJ_GET_SLOT wrapper that bypasses, for a native * object, the lock-free "fast path" test of (OBJ_SCOPE(obj)->ownercx == cx), * to avoid needlessly switching from lock-free to lock-full scope when doing * GC on a different context from the last one to own the scope. The caller * in this case is probably a JSClass.mark function, e.g., fun_mark, or maybe * a finalizer. * * The GC runs only when all threads except the one on which the GC is active * are suspended at GC-safe points, so calling STOBJ_GET_SLOT from the GC's * thread is safe when rt->gcRunning is set. See jsgc.c for details. */ #define THREAD_IS_RUNNING_GC(rt, thread) \ ((rt)->gcRunning && (rt)->gcThread == (thread)) #define CX_THREAD_IS_RUNNING_GC(cx) \ THREAD_IS_RUNNING_GC((cx)->runtime, (cx)->thread) #else /* !JS_THREADSAFE */ #define OBJ_GET_SLOT(cx,obj,slot) LOCKED_OBJ_GET_SLOT(obj,slot) #define OBJ_SET_SLOT(cx,obj,slot,value) LOCKED_OBJ_WRITE_BARRIER(cx,obj,slot, \ value) #endif /* !JS_THREADSAFE */ /* Thread-safe delegate, proto, parent, and class access macros. */ #define OBJ_IS_DELEGATE(cx,obj) STOBJ_IS_DELEGATE(obj) #define OBJ_SET_DELEGATE(cx,obj) STOBJ_SET_DELEGATE(obj) #define OBJ_GET_PROTO(cx,obj) STOBJ_GET_PROTO(obj) #define OBJ_SET_PROTO(cx,obj,proto) STOBJ_SET_PROTO(obj, proto) #define OBJ_CLEAR_PROTO(cx,obj) STOBJ_CLEAR_PROTO(obj) #define OBJ_GET_PARENT(cx,obj) STOBJ_GET_PARENT(obj) #define OBJ_SET_PARENT(cx,obj,parent) STOBJ_SET_PARENT(obj, parent) #define OBJ_CLEAR_PARENT(cx,obj) STOBJ_CLEAR_PARENT(obj) /* * Class is invariant and comes from the fixed clasp member. Thus no locking * is necessary to read it. Same for the private slot. */ #define OBJ_GET_CLASS(cx,obj) STOBJ_GET_CLASS(obj) #define OBJ_GET_PRIVATE(cx,obj) STOBJ_GET_PRIVATE(obj) /* Test whether a map or object is native. */ #define MAP_IS_NATIVE(map) \ JS_LIKELY((map)->ops == &js_ObjectOps || \ (map)->ops->newObjectMap == js_ObjectOps.newObjectMap) #define OBJ_IS_NATIVE(obj) MAP_IS_NATIVE((obj)->map) extern JS_FRIEND_DATA(JSObjectOps) js_ObjectOps; extern JS_FRIEND_DATA(JSObjectOps) js_WithObjectOps; extern JSClass js_ObjectClass; extern JSClass js_WithClass; extern JSClass js_BlockClass; /* * Block scope object macros. The slots reserved by js_BlockClass are: * * JSSLOT_PRIVATE JSStackFrame * active frame pointer or null * JSSLOT_BLOCK_DEPTH int depth of block slots in frame * * After JSSLOT_BLOCK_DEPTH come one or more slots for the block locals. * * A With object is like a Block object, in that both have one reserved slot * telling the stack depth of the relevant slots (the slot whose value is the * object named in the with statement, the slots containing the block's local * variables); and both have a private slot referring to the JSStackFrame in * whose activation they were created (or null if the with or block object * outlives the frame). */ #define JSSLOT_BLOCK_DEPTH (JSSLOT_PRIVATE + 1) #define OBJ_IS_CLONED_BLOCK(obj) \ (OBJ_SCOPE(obj)->object != (obj)) #define OBJ_BLOCK_COUNT(cx,obj) \ (OBJ_SCOPE(obj)->entryCount) #define OBJ_BLOCK_DEPTH(cx,obj) \ JSVAL_TO_INT(STOBJ_GET_SLOT(obj, JSSLOT_BLOCK_DEPTH)) #define OBJ_SET_BLOCK_DEPTH(cx,obj,depth) \ STOBJ_SET_SLOT(obj, JSSLOT_BLOCK_DEPTH, INT_TO_JSVAL(depth)) /* * To make sure this slot is well-defined, always call js_NewWithObject to * create a With object, don't call js_NewObject directly. When creating a * With object that does not correspond to a stack slot, pass -1 for depth. * * When popping the stack across this object's "with" statement, client code * must call JS_SetPrivate(cx, withobj, NULL). */ extern JSObject * js_NewWithObject(JSContext *cx, JSObject *proto, JSObject *parent, jsint depth); /* * Create a new block scope object not linked to any proto or parent object. * Blocks are created by the compiler to reify let blocks and comprehensions. * Only when dynamic scope is captured do they need to be cloned and spliced * into an active scope chain. */ extern JSObject * js_NewBlockObject(JSContext *cx); extern JSObject * js_CloneBlockObject(JSContext *cx, JSObject *proto, JSObject *parent, JSStackFrame *fp); extern JSBool js_PutBlockObject(JSContext *cx, JSBool normalUnwind); struct JSSharpObjectMap { jsrefcount depth; jsatomid sharpgen; JSHashTable *table; }; #define SHARP_BIT ((jsatomid) 1) #define BUSY_BIT ((jsatomid) 2) #define SHARP_ID_SHIFT 2 #define IS_SHARP(he) (JS_PTR_TO_UINT32((he)->value) & SHARP_BIT) #define MAKE_SHARP(he) ((he)->value = JS_UINT32_TO_PTR(JS_PTR_TO_UINT32((he)->value)|SHARP_BIT)) #define IS_BUSY(he) (JS_PTR_TO_UINT32((he)->value) & BUSY_BIT) #define MAKE_BUSY(he) ((he)->value = JS_UINT32_TO_PTR(JS_PTR_TO_UINT32((he)->value)|BUSY_BIT)) #define CLEAR_BUSY(he) ((he)->value = JS_UINT32_TO_PTR(JS_PTR_TO_UINT32((he)->value)&~BUSY_BIT)) extern JSHashEntry * js_EnterSharpObject(JSContext *cx, JSObject *obj, JSIdArray **idap, jschar **sp); extern void js_LeaveSharpObject(JSContext *cx, JSIdArray **idap); /* * Mark objects stored in map if GC happens between js_EnterSharpObject * and js_LeaveSharpObject. GC calls this when map->depth > 0. */ extern void js_TraceSharpMap(JSTracer *trc, JSSharpObjectMap *map); extern JSBool js_HasOwnPropertyHelper(JSContext *cx, JSLookupPropOp lookup, uintN argc, jsval *vp); extern JSBool js_HasOwnProperty(JSContext *cx, JSLookupPropOp lookup, JSObject *obj, jsid id, jsval *vp); extern JSBool js_PropertyIsEnumerable(JSContext *cx, JSObject *obj, jsid id, jsval *vp); extern JSObject * js_InitBlockClass(JSContext *cx, JSObject* obj); extern JSObject * js_InitEval(JSContext *cx, JSObject *obj); extern JSObject * js_InitObjectClass(JSContext *cx, JSObject *obj); /* Select Object.prototype method names shared between jsapi.c and jsobj.c. */ extern const char js_watch_str[]; extern const char js_unwatch_str[]; extern const char js_hasOwnProperty_str[]; extern const char js_isPrototypeOf_str[]; extern const char js_propertyIsEnumerable_str[]; extern const char js_defineGetter_str[]; extern const char js_defineSetter_str[]; extern const char js_lookupGetter_str[]; extern const char js_lookupSetter_str[]; extern void js_InitObjectMap(JSObjectMap *map, jsrefcount nrefs, JSObjectOps *ops, JSClass *clasp); extern JSObjectMap * js_NewObjectMap(JSContext *cx, jsrefcount nrefs, JSObjectOps *ops, JSClass *clasp, JSObject *obj); extern void js_DestroyObjectMap(JSContext *cx, JSObjectMap *map); extern JSObjectMap * js_HoldObjectMap(JSContext *cx, JSObjectMap *map); extern JSObjectMap * js_DropObjectMap(JSContext *cx, JSObjectMap *map, JSObject *obj); extern JSBool js_GetClassId(JSContext *cx, JSClass *clasp, jsid *idp); extern JSObject * js_NewObject(JSContext *cx, JSClass *clasp, JSObject *proto, JSObject *parent, uintN objectSize); /* * See jsapi.h, JS_NewObjectWithGivenProto. * * objectSize is either the explicit size for the allocated object or 0 * indicating to use the default size based on object's class. */ extern JSObject * js_NewObjectWithGivenProto(JSContext *cx, JSClass *clasp, JSObject *proto, JSObject *parent, uintN objectSize); /* * Fast access to immutable standard objects (constructors and prototypes). */ extern JSBool js_GetClassObject(JSContext *cx, JSObject *obj, JSProtoKey key, JSObject **objp); extern JSBool js_SetClassObject(JSContext *cx, JSObject *obj, JSProtoKey key, JSObject *cobj); extern JSBool js_FindClassObject(JSContext *cx, JSObject *start, jsid id, jsval *vp); extern JSObject * js_ConstructObject(JSContext *cx, JSClass *clasp, JSObject *proto, JSObject *parent, uintN argc, jsval *argv); extern void js_FinalizeObject(JSContext *cx, JSObject *obj); extern JSBool js_AllocSlot(JSContext *cx, JSObject *obj, uint32 *slotp); extern void js_FreeSlot(JSContext *cx, JSObject *obj, uint32 slot); /* JSVAL_INT_MAX as a string */ #define JSVAL_INT_MAX_STRING "1073741823" #define CHECK_FOR_STRING_INDEX(id) \ JS_BEGIN_MACRO \ if (JSID_IS_ATOM(id)) { \ JSAtom *atom_ = JSID_TO_ATOM(id); \ JSString *str_ = ATOM_TO_STRING(atom_); \ const jschar *s_ = JSFLATSTR_CHARS(str_); \ JSBool negative_ = (*s_ == '-'); \ if (negative_) s_++; \ if (JS7_ISDEC(*s_)) { \ size_t n_ = JSFLATSTR_LENGTH(str_) - negative_; \ if (n_ <= sizeof(JSVAL_INT_MAX_STRING) - 1) \ id = js_CheckForStringIndex(id, s_, s_ + n_, negative_); \ } \ } \ JS_END_MACRO extern jsid js_CheckForStringIndex(jsid id, const jschar *cp, const jschar *end, JSBool negative); /* * Find or create a property named by id in obj's scope, with the given getter * and setter, slot, attributes, and other members. */ extern JSScopeProperty * js_AddNativeProperty(JSContext *cx, JSObject *obj, jsid id, JSPropertyOp getter, JSPropertyOp setter, uint32 slot, uintN attrs, uintN flags, intN shortid); /* * Change sprop to have the given attrs, getter, and setter in scope, morphing * it into a potentially new JSScopeProperty. Return a pointer to the changed * or identical property. */ extern JSScopeProperty * js_ChangeNativePropertyAttrs(JSContext *cx, JSObject *obj, JSScopeProperty *sprop, uintN attrs, uintN mask, JSPropertyOp getter, JSPropertyOp setter); /* * On error, return false. On success, if propp is non-null, return true with * obj locked and with a held property in *propp; if propp is null, return true * but release obj's lock first. Therefore all callers who pass non-null propp * result parameters must later call OBJ_DROP_PROPERTY(cx, obj, *propp) both to * drop the held property, and to release the lock on obj. */ extern JSBool js_DefineProperty(JSContext *cx, JSObject *obj, jsid id, jsval value, JSPropertyOp getter, JSPropertyOp setter, uintN attrs, JSProperty **propp); extern JSBool js_DefineNativeProperty(JSContext *cx, JSObject *obj, jsid id, jsval value, JSPropertyOp getter, JSPropertyOp setter, uintN attrs, uintN flags, intN shortid, JSProperty **propp); /* * Unlike js_DefineProperty, propp must be non-null. On success, and if id was * found, return true with *objp non-null and locked, and with a held property * stored in *propp. If successful but id was not found, return true with both * *objp and *propp null. Therefore all callers who receive a non-null *propp * must later call OBJ_DROP_PROPERTY(cx, *objp, *propp). */ extern JS_FRIEND_API(JSBool) js_LookupProperty(JSContext *cx, JSObject *obj, jsid id, JSObject **objp, JSProperty **propp); /* * Specialized subroutine that allows caller to preset JSRESOLVE_* flags and * returns the index along the prototype chain in which *propp was found, or * the last index if not found, or -1 on error. */ extern int js_LookupPropertyWithFlags(JSContext *cx, JSObject *obj, jsid id, uintN flags, JSObject **objp, JSProperty **propp); extern int js_FindPropertyHelper(JSContext *cx, jsid id, JSObject **objp, JSObject **pobjp, JSProperty **propp, JSPropCacheEntry **entryp); /* * Return the index along the scope chain in which id was found, or the last * index if not found, or -1 on error. */ extern JS_FRIEND_API(JSBool) js_FindProperty(JSContext *cx, jsid id, JSObject **objp, JSObject **pobjp, JSProperty **propp); extern JSObject * js_FindIdentifierBase(JSContext *cx, jsid id, JSPropCacheEntry *entry); extern JSObject * js_FindVariableScope(JSContext *cx, JSFunction **funp); /* * NB: js_NativeGet and js_NativeSet are called with the scope containing sprop * (pobj's scope for Get, obj's for Set) locked, and on successful return, that * scope is again locked. But on failure, both functions return false with the * scope containing sprop unlocked. */ extern JSBool js_NativeGet(JSContext *cx, JSObject *obj, JSObject *pobj, JSScopeProperty *sprop, jsval *vp); extern JSBool js_NativeSet(JSContext *cx, JSObject *obj, JSScopeProperty *sprop, jsval *vp); extern JSBool js_GetPropertyHelper(JSContext *cx, JSObject *obj, jsid id, jsval *vp, JSPropCacheEntry **entryp); extern JSBool js_GetProperty(JSContext *cx, JSObject *obj, jsid id, jsval *vp); extern JSBool js_SetPropertyHelper(JSContext *cx, JSObject *obj, jsid id, jsval *vp, JSPropCacheEntry **entryp); extern JSBool js_SetProperty(JSContext *cx, JSObject *obj, jsid id, jsval *vp); extern JSBool js_GetAttributes(JSContext *cx, JSObject *obj, jsid id, JSProperty *prop, uintN *attrsp); extern JSBool js_SetAttributes(JSContext *cx, JSObject *obj, jsid id, JSProperty *prop, uintN *attrsp); extern JSBool js_DeleteProperty(JSContext *cx, JSObject *obj, jsid id, jsval *rval); extern JSBool js_DefaultValue(JSContext *cx, JSObject *obj, JSType hint, jsval *vp); extern JSBool js_Enumerate(JSContext *cx, JSObject *obj, JSIterateOp enum_op, jsval *statep, jsid *idp); extern void js_TraceNativeEnumerators(JSTracer *trc); extern JSBool js_CheckAccess(JSContext *cx, JSObject *obj, jsid id, JSAccessMode mode, jsval *vp, uintN *attrsp); extern JSBool js_Call(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval); extern JSBool js_Construct(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval); extern JSBool js_HasInstance(JSContext *cx, JSObject *obj, jsval v, JSBool *bp); extern JSBool js_SetProtoOrParent(JSContext *cx, JSObject *obj, uint32 slot, JSObject *pobj); extern JSBool js_IsDelegate(JSContext *cx, JSObject *obj, jsval v, JSBool *bp); extern JSBool js_GetClassPrototype(JSContext *cx, JSObject *scope, jsid id, JSObject **protop); extern JSBool js_SetClassPrototype(JSContext *cx, JSObject *ctor, JSObject *proto, uintN attrs); /* * Wrap boolean, number or string as Boolean, Number or String object. * *vp must not be an object, null or undefined. */ extern JSBool js_PrimitiveToObject(JSContext *cx, jsval *vp); extern JSBool js_ValueToObject(JSContext *cx, jsval v, JSObject **objp); extern JSObject * js_ValueToNonNullObject(JSContext *cx, jsval v); extern JSBool js_TryValueOf(JSContext *cx, JSObject *obj, JSType type, jsval *rval); extern JSBool js_TryMethod(JSContext *cx, JSObject *obj, JSAtom *atom, uintN argc, jsval *argv, jsval *rval); extern JSBool js_XDRObject(JSXDRState *xdr, JSObject **objp); extern void js_TraceObject(JSTracer *trc, JSObject *obj); extern void js_PrintObjectSlotName(JSTracer *trc, char *buf, size_t bufsize); extern void js_Clear(JSContext *cx, JSObject *obj); extern jsval js_GetRequiredSlot(JSContext *cx, JSObject *obj, uint32 slot); extern JSBool js_SetRequiredSlot(JSContext *cx, JSObject *obj, uint32 slot, jsval v); /* * Precondition: obj must be locked. */ extern JSBool js_ReallocSlots(JSContext *cx, JSObject *obj, uint32 nslots, JSBool exactAllocation); extern JSObject * js_CheckScopeChainValidity(JSContext *cx, JSObject *scopeobj, const char *caller); extern JSBool js_CheckPrincipalsAccess(JSContext *cx, JSObject *scopeobj, JSPrincipals *principals, JSAtom *caller); /* Infallible -- returns its argument if there is no wrapped object. */ extern JSObject * js_GetWrappedObject(JSContext *cx, JSObject *obj); /* NB: Infallible. */ extern const char * js_ComputeFilename(JSContext *cx, JSStackFrame *caller, JSPrincipals *principals, uintN *linenop); #ifdef DEBUG JS_FRIEND_API(void) js_DumpChars(const jschar *s, size_t n); JS_FRIEND_API(void) js_DumpString(JSString *str); JS_FRIEND_API(void) js_DumpAtom(JSAtom *atom); JS_FRIEND_API(void) js_DumpValue(jsval val); JS_FRIEND_API(void) js_DumpId(jsid id); JS_FRIEND_API(void) js_DumpObject(JSObject *obj); #endif JS_END_EXTERN_C #endif /* jsobj_h___ */