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Annotation of sbbs/javascript/include/mozilla/js/jsobj.h, revision 1.1

1.1     ! root        1: /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
        !             2:  *
        !             3:  * The contents of this file are subject to the Netscape Public
        !             4:  * License Version 1.1 (the "License"); you may not use this file
        !             5:  * except in compliance with the License. You may obtain a copy of
        !             6:  * the License at http://www.mozilla.org/NPL/
        !             7:  *
        !             8:  * Software distributed under the License is distributed on an "AS
        !             9:  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
        !            10:  * implied. See the License for the specific language governing
        !            11:  * rights and limitations under the License.
        !            12:  *
        !            13:  * The Original Code is Mozilla Communicator client code, released
        !            14:  * March 31, 1998.
        !            15:  *
        !            16:  * The Initial Developer of the Original Code is Netscape
        !            17:  * Communications Corporation.  Portions created by Netscape are
        !            18:  * Copyright (C) 1998 Netscape Communications Corporation. All
        !            19:  * Rights Reserved.
        !            20:  *
        !            21:  * Contributor(s): 
        !            22:  *
        !            23:  * Alternatively, the contents of this file may be used under the
        !            24:  * terms of the GNU Public License (the "GPL"), in which case the
        !            25:  * provisions of the GPL are applicable instead of those above.
        !            26:  * If you wish to allow use of your version of this file only
        !            27:  * under the terms of the GPL and not to allow others to use your
        !            28:  * version of this file under the NPL, indicate your decision by
        !            29:  * deleting the provisions above and replace them with the notice
        !            30:  * and other provisions required by the GPL.  If you do not delete
        !            31:  * the provisions above, a recipient may use your version of this
        !            32:  * file under either the NPL or the GPL.
        !            33:  */
        !            34: 
        !            35: #ifndef jsobj_h___
        !            36: #define jsobj_h___
        !            37: /*
        !            38:  * JS object definitions.
        !            39:  *
        !            40:  * A JS object consists of a possibly-shared object descriptor containing
        !            41:  * ordered property names, called the map; and a dense vector of property
        !            42:  * values, called slots.  The map/slot pointer pair is GC'ed, while the map
        !            43:  * is reference counted and the slot vector is malloc'ed.
        !            44:  */
        !            45: #include "jshash.h" /* Added by JSIFY */
        !            46: #include "jsprvtd.h"
        !            47: #include "jspubtd.h"
        !            48: 
        !            49: JS_BEGIN_EXTERN_C
        !            50: 
        !            51: struct JSObjectMap {
        !            52:     jsrefcount  nrefs;          /* count of all referencing objects */
        !            53:     JSObjectOps *ops;           /* high level object operation vtable */
        !            54:     uint32      nslots;         /* length of obj->slots vector */
        !            55:     uint32      freeslot;       /* index of next free obj->slots element */
        !            56: };
        !            57: 
        !            58: /* Shorthand macros for frequently-made calls. */
        !            59: #if defined JS_THREADSAFE && defined DEBUG
        !            60: #define OBJ_LOOKUP_PROPERTY(cx,obj,id,objp,propp)                             \
        !            61:     (obj)->map->ops->lookupProperty(cx,obj,id,objp,propp,__FILE__,__LINE__)
        !            62: #else
        !            63: #define OBJ_LOOKUP_PROPERTY(cx,obj,id,objp,propp)                             \
        !            64:     (obj)->map->ops->lookupProperty(cx,obj,id,objp,propp)
        !            65: #endif
        !            66: #define OBJ_DEFINE_PROPERTY(cx,obj,id,value,getter,setter,attrs,propp)        \
        !            67:     (obj)->map->ops->defineProperty(cx,obj,id,value,getter,setter,attrs,propp)
        !            68: #define OBJ_GET_PROPERTY(cx,obj,id,vp)                                        \
        !            69:     (obj)->map->ops->getProperty(cx,obj,id,vp)
        !            70: #define OBJ_SET_PROPERTY(cx,obj,id,vp)                                        \
        !            71:     (obj)->map->ops->setProperty(cx,obj,id,vp)
        !            72: #define OBJ_GET_ATTRIBUTES(cx,obj,id,prop,attrsp)                             \
        !            73:     (obj)->map->ops->getAttributes(cx,obj,id,prop,attrsp)
        !            74: #define OBJ_SET_ATTRIBUTES(cx,obj,id,prop,attrsp)                             \
        !            75:     (obj)->map->ops->setAttributes(cx,obj,id,prop,attrsp)
        !            76: #define OBJ_DELETE_PROPERTY(cx,obj,id,rval)                                   \
        !            77:     (obj)->map->ops->deleteProperty(cx,obj,id,rval)
        !            78: #define OBJ_DEFAULT_VALUE(cx,obj,hint,vp)                                     \
        !            79:     (obj)->map->ops->defaultValue(cx,obj,hint,vp)
        !            80: #define OBJ_ENUMERATE(cx,obj,enum_op,statep,idp)                              \
        !            81:     (obj)->map->ops->enumerate(cx,obj,enum_op,statep,idp)
        !            82: #define OBJ_CHECK_ACCESS(cx,obj,id,mode,vp,attrsp)                            \
        !            83:     (obj)->map->ops->checkAccess(cx,obj,id,mode,vp,attrsp)
        !            84: 
        !            85: /* These four are time-optimized to avoid stub calls. */
        !            86: #define OBJ_THIS_OBJECT(cx,obj)                                               \
        !            87:     ((obj)->map->ops->thisObject                                              \
        !            88:      ? (obj)->map->ops->thisObject(cx,obj)                                    \
        !            89:      : (obj))
        !            90: #define OBJ_DROP_PROPERTY(cx,obj,prop)                                        \
        !            91:     ((obj)->map->ops->dropProperty                                            \
        !            92:      ? (obj)->map->ops->dropProperty(cx,obj,prop)                             \
        !            93:      : (void)0)
        !            94: #define OBJ_GET_REQUIRED_SLOT(cx,obj,slot)                                    \
        !            95:     ((obj)->map->ops->getRequiredSlot                                         \
        !            96:      ? (obj)->map->ops->getRequiredSlot(cx, obj, slot)                        \
        !            97:      : JSVAL_VOID)
        !            98: #define OBJ_SET_REQUIRED_SLOT(cx,obj,slot,v)                                  \
        !            99:     ((obj)->map->ops->setRequiredSlot                                         \
        !           100:      ? (obj)->map->ops->setRequiredSlot(cx, obj, slot, v)                     \
        !           101:      : (void)0)
        !           102: 
        !           103: /*
        !           104:  * In the original JS engine design, obj->slots pointed to a vector of length
        !           105:  * JS_INITIAL_NSLOTS words if obj->map was shared with a prototype object,
        !           106:  * else of length obj->map->nslots.  With the advent of JS_GetReservedSlot,
        !           107:  * JS_SetReservedSlot, and JSCLASS_HAS_RESERVED_SLOTS (see jsapi.h), the size
        !           108:  * of the minimum length slots vector in the case where map is shared cannot
        !           109:  * be constant.  This length starts at JS_INITIAL_NSLOTS, but may advance to
        !           110:  * include all the reserved slots.
        !           111:  *
        !           112:  * Therefore slots must be self-describing.  Rather than tag its low order bit
        !           113:  * (a bit is all we need) to distinguish initial length from reserved length,
        !           114:  * we do "the BSTR thing": over-allocate slots by one jsval, and store the
        !           115:  * *net* length (counting usable slots, which have non-negative obj->slots[]
        !           116:  * indices) in obj->slots[-1].  All code that sets obj->slots must be aware of
        !           117:  * this hack -- you have been warned, and jsobj.c has been updated!
        !           118:  */
        !           119: struct JSObject {
        !           120:     JSObjectMap *map;
        !           121:     jsval       *slots;
        !           122: };
        !           123: 
        !           124: #define JSSLOT_PROTO        0
        !           125: #define JSSLOT_PARENT       1
        !           126: #define JSSLOT_CLASS        2
        !           127: #define JSSLOT_PRIVATE      3
        !           128: #define JSSLOT_START(clasp) (((clasp)->flags & JSCLASS_HAS_PRIVATE)           \
        !           129:                              ? JSSLOT_PRIVATE + 1                             \
        !           130:                              : JSSLOT_CLASS + 1)
        !           131: 
        !           132: #define JSSLOT_FREE(clasp)  (JSSLOT_START(clasp)                              \
        !           133:                              + JSCLASS_RESERVED_SLOTS(clasp))
        !           134: 
        !           135: #define JS_INITIAL_NSLOTS   5
        !           136: 
        !           137: #ifdef DEBUG
        !           138: #define MAP_CHECK_SLOT(map,slot) \
        !           139:     JS_ASSERT((uint32)slot < JS_MIN((map)->freeslot, (map)->nslots))
        !           140: #define OBJ_CHECK_SLOT(obj,slot) \
        !           141:     MAP_CHECK_SLOT((obj)->map, slot)
        !           142: #else
        !           143: #define OBJ_CHECK_SLOT(obj,slot) ((void)0)
        !           144: #endif
        !           145: 
        !           146: /* Fast macros for accessing obj->slots while obj is locked (if thread-safe). */
        !           147: #define LOCKED_OBJ_GET_SLOT(obj,slot) \
        !           148:     (OBJ_CHECK_SLOT(obj, slot), (obj)->slots[slot])
        !           149: #define LOCKED_OBJ_SET_SLOT(obj,slot,value) \
        !           150:     (OBJ_CHECK_SLOT(obj, slot), (obj)->slots[slot] = (value))
        !           151: #define LOCKED_OBJ_GET_PROTO(obj) \
        !           152:     JSVAL_TO_OBJECT(LOCKED_OBJ_GET_SLOT(obj, JSSLOT_PROTO))
        !           153: #define LOCKED_OBJ_GET_CLASS(obj) \
        !           154:     ((JSClass *)JSVAL_TO_PRIVATE(LOCKED_OBJ_GET_SLOT(obj, JSSLOT_CLASS)))
        !           155: 
        !           156: #ifdef JS_THREADSAFE
        !           157: 
        !           158: /* Thread-safe functions and wrapper macros for accessing obj->slots. */
        !           159: #define OBJ_GET_SLOT(cx,obj,slot)                                             \
        !           160:     (OBJ_CHECK_SLOT(obj, slot),                                               \
        !           161:      (OBJ_IS_NATIVE(obj) && OBJ_SCOPE(obj)->ownercx == cx)                    \
        !           162:      ? LOCKED_OBJ_GET_SLOT(obj, slot)                                         \
        !           163:      : js_GetSlotThreadSafe(cx, obj, slot))
        !           164: 
        !           165: #define OBJ_SET_SLOT(cx,obj,slot,value)                                       \
        !           166:     (OBJ_CHECK_SLOT(obj, slot),                                               \
        !           167:      (OBJ_IS_NATIVE(obj) && OBJ_SCOPE(obj)->ownercx == cx)                    \
        !           168:      ? (void) LOCKED_OBJ_SET_SLOT(obj, slot, value)                           \
        !           169:      : js_SetSlotThreadSafe(cx, obj, slot, value))
        !           170: 
        !           171: /*
        !           172:  * If thread-safe, define an OBJ_GET_SLOT wrapper that bypasses, for a native
        !           173:  * object, the lock-free "fast path" test of (OBJ_SCOPE(obj)->ownercx == cx),
        !           174:  * to avoid needlessly switching from lock-free to lock-full scope when doing
        !           175:  * GC on a different context from the last one to own the scope.  The caller
        !           176:  * in this case is probably a JSClass.mark function, e.g., fun_mark, or maybe
        !           177:  * a finalizer.
        !           178:  *
        !           179:  * The GC runs only when all threads except the one on which the GC is active
        !           180:  * are suspended at GC-safe points, so there is no hazard in directly accessing
        !           181:  * obj->slots[slot] from the GC's thread, once rt->gcRunning has been set.  See
        !           182:  * jsgc.c for details.
        !           183:  */
        !           184: #define THREAD_IS_RUNNING_GC(rt, thread)                                      \
        !           185:     ((rt)->gcRunning && (rt)->gcThread == (thread))
        !           186: 
        !           187: #define CX_THREAD_IS_RUNNING_GC(cx)                                           \
        !           188:     THREAD_IS_RUNNING_GC((cx)->runtime, (cx)->thread)
        !           189: 
        !           190: #define GC_AWARE_GET_SLOT(cx, obj, slot)                                      \
        !           191:     ((OBJ_IS_NATIVE(obj) && CX_THREAD_IS_RUNNING_GC(cx))                      \
        !           192:      ? (obj)->slots[slot]                                                     \
        !           193:      : OBJ_GET_SLOT(cx, obj, slot))
        !           194: 
        !           195: #else   /* !JS_THREADSAFE */
        !           196: 
        !           197: #define OBJ_GET_SLOT(cx,obj,slot)       LOCKED_OBJ_GET_SLOT(obj,slot)
        !           198: #define OBJ_SET_SLOT(cx,obj,slot,value) LOCKED_OBJ_SET_SLOT(obj,slot,value)
        !           199: #define GC_AWARE_GET_SLOT(cx,obj,slot)  LOCKED_OBJ_GET_SLOT(obj,slot)
        !           200: 
        !           201: #endif /* !JS_THREADSAFE */
        !           202: 
        !           203: /* Thread-safe proto, parent, and class access macros. */
        !           204: #define OBJ_GET_PROTO(cx,obj) \
        !           205:     JSVAL_TO_OBJECT(OBJ_GET_SLOT(cx, obj, JSSLOT_PROTO))
        !           206: #define OBJ_SET_PROTO(cx,obj,proto) \
        !           207:     OBJ_SET_SLOT(cx, obj, JSSLOT_PROTO, OBJECT_TO_JSVAL(proto))
        !           208: 
        !           209: #define OBJ_GET_PARENT(cx,obj) \
        !           210:     JSVAL_TO_OBJECT(OBJ_GET_SLOT(cx, obj, JSSLOT_PARENT))
        !           211: #define OBJ_SET_PARENT(cx,obj,parent) \
        !           212:     OBJ_SET_SLOT(cx, obj, JSSLOT_PARENT, OBJECT_TO_JSVAL(parent))
        !           213: 
        !           214: #define OBJ_GET_CLASS(cx,obj) \
        !           215:     ((JSClass *)JSVAL_TO_PRIVATE(OBJ_GET_SLOT(cx, obj, JSSLOT_CLASS)))
        !           216: 
        !           217: /* Test whether a map or object is native. */
        !           218: #define MAP_IS_NATIVE(map)                                                    \
        !           219:     ((map)->ops == &js_ObjectOps ||                                           \
        !           220:      ((map)->ops && (map)->ops->newObjectMap == js_ObjectOps.newObjectMap))
        !           221: 
        !           222: #define OBJ_IS_NATIVE(obj)  MAP_IS_NATIVE((obj)->map)
        !           223: 
        !           224: extern JS_FRIEND_DATA(JSObjectOps) js_ObjectOps;
        !           225: extern JS_FRIEND_DATA(JSObjectOps) js_WithObjectOps;
        !           226: extern JSClass  js_ObjectClass;
        !           227: extern JSClass  js_WithClass;
        !           228: 
        !           229: struct JSSharpObjectMap {
        !           230:     jsrefcount  depth;
        !           231:     jsatomid    sharpgen;
        !           232:     JSHashTable *table;
        !           233: };
        !           234: 
        !           235: #define SHARP_BIT       ((jsatomid) 1)
        !           236: #define BUSY_BIT        ((jsatomid) 2)
        !           237: #define SHARP_ID_SHIFT  2
        !           238: #define IS_SHARP(he)    ((jsatomid)(he)->value & SHARP_BIT)
        !           239: #define MAKE_SHARP(he)  ((he)->value = (void*)((jsatomid)(he)->value|SHARP_BIT))
        !           240: #define IS_BUSY(he)     ((jsatomid)(he)->value & BUSY_BIT)
        !           241: #define MAKE_BUSY(he)   ((he)->value = (void*)((jsatomid)(he)->value|BUSY_BIT))
        !           242: #define CLEAR_BUSY(he)  ((he)->value = (void*)((jsatomid)(he)->value&~BUSY_BIT))
        !           243: 
        !           244: extern JSHashEntry *
        !           245: js_EnterSharpObject(JSContext *cx, JSObject *obj, JSIdArray **idap,
        !           246:                    jschar **sp);
        !           247: 
        !           248: extern void
        !           249: js_LeaveSharpObject(JSContext *cx, JSIdArray **idap);
        !           250: 
        !           251: extern JSBool
        !           252: js_obj_toSource(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
        !           253:                jsval *rval);
        !           254: 
        !           255: extern JSBool
        !           256: js_obj_toString(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
        !           257:                jsval *rval);
        !           258: 
        !           259: extern JSObject *
        !           260: js_InitObjectClass(JSContext *cx, JSObject *obj);
        !           261: 
        !           262: /* Select Object.prototype method names shared between jsapi.c and jsobj.c. */
        !           263: extern const char js_watch_str[];
        !           264: extern const char js_unwatch_str[];
        !           265: extern const char js_hasOwnProperty_str[];
        !           266: extern const char js_isPrototypeOf_str[];
        !           267: extern const char js_propertyIsEnumerable_str[];
        !           268: extern const char js_defineGetter_str[];
        !           269: extern const char js_defineSetter_str[];
        !           270: extern const char js_lookupGetter_str[];
        !           271: extern const char js_lookupSetter_str[];
        !           272: 
        !           273: extern void
        !           274: js_InitObjectMap(JSObjectMap *map, jsrefcount nrefs, JSObjectOps *ops,
        !           275:                 JSClass *clasp);
        !           276: 
        !           277: extern JSObjectMap *
        !           278: js_NewObjectMap(JSContext *cx, jsrefcount nrefs, JSObjectOps *ops,
        !           279:                JSClass *clasp, JSObject *obj);
        !           280: 
        !           281: extern void
        !           282: js_DestroyObjectMap(JSContext *cx, JSObjectMap *map);
        !           283: 
        !           284: extern JSObjectMap *
        !           285: js_HoldObjectMap(JSContext *cx, JSObjectMap *map);
        !           286: 
        !           287: extern JSObjectMap *
        !           288: js_DropObjectMap(JSContext *cx, JSObjectMap *map, JSObject *obj);
        !           289: 
        !           290: extern JSObject *
        !           291: js_NewObject(JSContext *cx, JSClass *clasp, JSObject *proto, JSObject *parent);
        !           292: 
        !           293: extern JSObject *
        !           294: js_ConstructObject(JSContext *cx, JSClass *clasp, JSObject *proto,
        !           295:                    JSObject *parent, uintN argc, jsval *argv);
        !           296: 
        !           297: extern void
        !           298: js_FinalizeObject(JSContext *cx, JSObject *obj);
        !           299: 
        !           300: extern JSBool
        !           301: js_AllocSlot(JSContext *cx, JSObject *obj, uint32 *slotp);
        !           302: 
        !           303: extern void
        !           304: js_FreeSlot(JSContext *cx, JSObject *obj, uint32 slot);
        !           305: 
        !           306: /*
        !           307:  * Find or create a property named by id in obj's scope, with the given getter
        !           308:  * and setter, slot, attributes, and other members.
        !           309:  */
        !           310: extern JSScopeProperty *
        !           311: js_AddNativeProperty(JSContext *cx, JSObject *obj, jsid id,
        !           312:                      JSPropertyOp getter, JSPropertyOp setter, uint32 slot,
        !           313:                      uintN attrs, uintN flags, intN shortid);
        !           314: 
        !           315: /*
        !           316:  * Change sprop to have the given attrs, getter, and setter in scope, morphing
        !           317:  * it into a potentially new JSScopeProperty.  Return a pointer to the changed
        !           318:  * or identical property.
        !           319:  */
        !           320: extern JSScopeProperty *
        !           321: js_ChangeNativePropertyAttrs(JSContext *cx, JSObject *obj,
        !           322:                              JSScopeProperty *sprop, uintN attrs, uintN mask,
        !           323:                              JSPropertyOp getter, JSPropertyOp setter);
        !           324: 
        !           325: /*
        !           326:  * On error, return false.  On success, if propp is non-null, return true with
        !           327:  * obj locked and with a held property in *propp; if propp is null, return true
        !           328:  * but release obj's lock first.  Therefore all callers who pass non-null propp
        !           329:  * result parameters must later call OBJ_DROP_PROPERTY(cx, obj, *propp) both to
        !           330:  * drop the held property, and to release the lock on obj.
        !           331:  */
        !           332: extern JSBool
        !           333: js_DefineProperty(JSContext *cx, JSObject *obj, jsid id, jsval value,
        !           334:                  JSPropertyOp getter, JSPropertyOp setter, uintN attrs,
        !           335:                  JSProperty **propp);
        !           336: 
        !           337: extern JSBool
        !           338: js_DefineNativeProperty(JSContext *cx, JSObject *obj, jsid id, jsval value,
        !           339:                         JSPropertyOp getter, JSPropertyOp setter, uintN attrs,
        !           340:                         uintN flags, intN shortid, JSProperty **propp);
        !           341: 
        !           342: /*
        !           343:  * Unlike js_DefineProperty, propp must be non-null.  On success, and if id was
        !           344:  * found, return true with *objp non-null and locked, and with a held property
        !           345:  * stored in *propp.  If successful but id was not found, return true with both
        !           346:  * *objp and *propp null.  Therefore all callers who receive a non-null *propp
        !           347:  * must later call OBJ_DROP_PROPERTY(cx, *objp, *propp).
        !           348:  */
        !           349: #if defined JS_THREADSAFE && defined DEBUG
        !           350: extern JS_FRIEND_API(JSBool)
        !           351: _js_LookupProperty(JSContext *cx, JSObject *obj, jsid id, JSObject **objp,
        !           352:                   JSProperty **propp, const char *file, uintN line);
        !           353: 
        !           354: #define js_LookupProperty(cx,obj,id,objp,propp) \
        !           355:     _js_LookupProperty(cx,obj,id,objp,propp,__FILE__,__LINE__)
        !           356: #else
        !           357: extern JS_FRIEND_API(JSBool)
        !           358: js_LookupProperty(JSContext *cx, JSObject *obj, jsid id, JSObject **objp,
        !           359:                  JSProperty **propp);
        !           360: #endif
        !           361: 
        !           362: extern JS_FRIEND_API(JSBool)
        !           363: js_FindProperty(JSContext *cx, jsid id, JSObject **objp, JSObject **pobjp,
        !           364:                JSProperty **propp);
        !           365: 
        !           366: extern JSObject *
        !           367: js_FindIdentifierBase(JSContext *cx, jsid id);
        !           368: 
        !           369: extern JSObject *
        !           370: js_FindVariableScope(JSContext *cx, JSFunction **funp);
        !           371: 
        !           372: extern JSBool
        !           373: js_GetProperty(JSContext *cx, JSObject *obj, jsid id, jsval *vp);
        !           374: 
        !           375: extern JSBool
        !           376: js_SetProperty(JSContext *cx, JSObject *obj, jsid id, jsval *vp);
        !           377: 
        !           378: extern JSBool
        !           379: js_GetAttributes(JSContext *cx, JSObject *obj, jsid id, JSProperty *prop,
        !           380:                 uintN *attrsp);
        !           381: 
        !           382: extern JSBool
        !           383: js_SetAttributes(JSContext *cx, JSObject *obj, jsid id, JSProperty *prop,
        !           384:                 uintN *attrsp);
        !           385: 
        !           386: extern JSBool
        !           387: js_DeleteProperty(JSContext *cx, JSObject *obj, jsid id, jsval *rval);
        !           388: 
        !           389: extern JSBool
        !           390: js_DefaultValue(JSContext *cx, JSObject *obj, JSType hint, jsval *vp);
        !           391: 
        !           392: extern JSIdArray *
        !           393: js_NewIdArray(JSContext *cx, jsint length);
        !           394: 
        !           395: extern JSIdArray *
        !           396: js_GrowIdArray(JSContext *cx, JSIdArray *ida, jsint length);
        !           397: 
        !           398: extern JSBool
        !           399: js_Enumerate(JSContext *cx, JSObject *obj, JSIterateOp enum_op,
        !           400:             jsval *statep, jsid *idp);
        !           401: 
        !           402: extern JSBool
        !           403: js_CheckAccess(JSContext *cx, JSObject *obj, jsid id, JSAccessMode mode,
        !           404:               jsval *vp, uintN *attrsp);
        !           405: 
        !           406: extern JSBool
        !           407: js_Call(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval);
        !           408: 
        !           409: extern JSBool
        !           410: js_Construct(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
        !           411:             jsval *rval);
        !           412: 
        !           413: extern JSBool
        !           414: js_HasInstance(JSContext *cx, JSObject *obj, jsval v, JSBool *bp);
        !           415: 
        !           416: extern JSBool
        !           417: js_SetProtoOrParent(JSContext *cx, JSObject *obj, uint32 slot, JSObject *pobj);
        !           418: 
        !           419: extern JSBool
        !           420: js_IsDelegate(JSContext *cx, JSObject *obj, jsval v, JSBool *bp);
        !           421: 
        !           422: extern JSBool
        !           423: js_GetClassPrototype(JSContext *cx, const char *name, JSObject **protop);
        !           424: 
        !           425: extern JSBool
        !           426: js_SetClassPrototype(JSContext *cx, JSObject *ctor, JSObject *proto,
        !           427:                     uintN attrs);
        !           428: 
        !           429: extern JSBool
        !           430: js_ValueToObject(JSContext *cx, jsval v, JSObject **objp);
        !           431: 
        !           432: extern JSObject *
        !           433: js_ValueToNonNullObject(JSContext *cx, jsval v);
        !           434: 
        !           435: extern JSBool
        !           436: js_TryValueOf(JSContext *cx, JSObject *obj, JSType type, jsval *rval);
        !           437: 
        !           438: extern JSBool
        !           439: js_TryMethod(JSContext *cx, JSObject *obj, JSAtom *atom,
        !           440:             uintN argc, jsval *argv, jsval *rval);
        !           441: 
        !           442: extern JSBool
        !           443: js_XDRObject(JSXDRState *xdr, JSObject **objp);
        !           444: 
        !           445: extern uint32
        !           446: js_Mark(JSContext *cx, JSObject *obj, void *arg);
        !           447: 
        !           448: extern void
        !           449: js_Clear(JSContext *cx, JSObject *obj);
        !           450: 
        !           451: extern jsval
        !           452: js_GetRequiredSlot(JSContext *cx, JSObject *obj, uint32 slot);
        !           453: 
        !           454: extern void
        !           455: js_SetRequiredSlot(JSContext *cx, JSObject *obj, uint32 slot, jsval v);
        !           456: 
        !           457: JS_END_EXTERN_C
        !           458: 
        !           459: #endif /* jsobj_h___ */

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