JSClassRef.h revision 81bc750723a18f21cd17d1b173cd2a4dda9cea6e
18e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project/* 28e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. 38e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 48e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Redistribution and use in source and binary forms, with or without 58e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * modification, are permitted provided that the following conditions 68e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * are met: 78e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 1. Redistributions of source code must retain the above copyright 88e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * notice, this list of conditions and the following disclaimer. 98e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * notice, this list of conditions and the following disclaimer in the 118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * documentation and/or other materials provided with the distribution. 128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 148e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 158e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 168e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 178e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 188e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 198e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 208e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 218e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 228e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 238e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 248e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project */ 258e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 268e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#ifndef JSClassRef_h 278e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#define JSClassRef_h 288e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 298e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "JSObjectRef.h" 308e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 318e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include <runtime/JSObject.h> 32635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project#include <runtime/Protect.h> 33635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project#include <runtime/UString.h> 34d0825bca7fe65beaee391d30da42e937db621564Steve Block#include <runtime/WeakGCPtr.h> 358e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include <wtf/HashMap.h> 368e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 37ab9e7a118cf1ea2e3a93dce683b2ded3e7291ddbBen Murdochstruct StaticValueEntry { 38ab9e7a118cf1ea2e3a93dce683b2ded3e7291ddbBen Murdoch WTF_MAKE_FAST_ALLOCATED; 39ab9e7a118cf1ea2e3a93dce683b2ded3e7291ddbBen Murdochpublic: 408e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project StaticValueEntry(JSObjectGetPropertyCallback _getProperty, JSObjectSetPropertyCallback _setProperty, JSPropertyAttributes _attributes) 418e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project : getProperty(_getProperty), setProperty(_setProperty), attributes(_attributes) 428e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { 438e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 448e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 458e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSObjectGetPropertyCallback getProperty; 468e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSObjectSetPropertyCallback setProperty; 478e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSPropertyAttributes attributes; 488e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project}; 498e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 50ab9e7a118cf1ea2e3a93dce683b2ded3e7291ddbBen Murdochstruct StaticFunctionEntry { 51ab9e7a118cf1ea2e3a93dce683b2ded3e7291ddbBen Murdoch WTF_MAKE_FAST_ALLOCATED; 52ab9e7a118cf1ea2e3a93dce683b2ded3e7291ddbBen Murdochpublic: 538e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project StaticFunctionEntry(JSObjectCallAsFunctionCallback _callAsFunction, JSPropertyAttributes _attributes) 548e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project : callAsFunction(_callAsFunction), attributes(_attributes) 558e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { 568e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 578e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 588e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSObjectCallAsFunctionCallback callAsFunction; 598e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSPropertyAttributes attributes; 608e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project}; 618e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 62f486d19d62f1bc33246748b14b14a9dfa617b57fIain Merricktypedef HashMap<RefPtr<StringImpl>, StaticValueEntry*> OpaqueJSClassStaticValuesTable; 63f486d19d62f1bc33246748b14b14a9dfa617b57fIain Merricktypedef HashMap<RefPtr<StringImpl>, StaticFunctionEntry*> OpaqueJSClassStaticFunctionsTable; 648e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 650bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdochstruct OpaqueJSClass; 668e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 678e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// An OpaqueJSClass (JSClass) is created without a context, so it can be used with any context, even across context groups. 688e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// This structure holds data members that vary across context groups. 69ab9e7a118cf1ea2e3a93dce683b2ded3e7291ddbBen Murdochstruct OpaqueJSClassContextData { 70ab9e7a118cf1ea2e3a93dce683b2ded3e7291ddbBen Murdoch WTF_MAKE_NONCOPYABLE(OpaqueJSClassContextData); WTF_MAKE_FAST_ALLOCATED; 71ab9e7a118cf1ea2e3a93dce683b2ded3e7291ddbBen Murdochpublic: 7281bc750723a18f21cd17d1b173cd2a4dda9cea6eBen Murdoch OpaqueJSClassContextData(JSC::JSGlobalData&, OpaqueJSClass*); 738e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project ~OpaqueJSClassContextData(); 748e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 758e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // It is necessary to keep OpaqueJSClass alive because of the following rare scenario: 768e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // 1. A class is created and used, so its context data is stored in JSGlobalData hash map. 778e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // 2. The class is released, and when all JS objects that use it are collected, OpaqueJSClass 788e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // is deleted (that's the part prevented by this RefPtr). 798e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // 3. Another class is created at the same address. 808e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // 4. When it is used, the old context data is found in JSGlobalData and used. 818e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project RefPtr<OpaqueJSClass> m_class; 828e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 838e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project OpaqueJSClassStaticValuesTable* staticValues; 848e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project OpaqueJSClassStaticFunctionsTable* staticFunctions; 85d0825bca7fe65beaee391d30da42e937db621564Steve Block JSC::WeakGCPtr<JSC::JSObject> cachedPrototype; 868e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project}; 878e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 888e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectstruct OpaqueJSClass : public ThreadSafeShared<OpaqueJSClass> { 898e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static PassRefPtr<OpaqueJSClass> create(const JSClassDefinition*); 908e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static PassRefPtr<OpaqueJSClass> createNoAutomaticPrototype(const JSClassDefinition*); 918e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project ~OpaqueJSClass(); 928e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 938e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSC::UString className(); 948e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project OpaqueJSClassStaticValuesTable* staticValues(JSC::ExecState*); 958e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project OpaqueJSClassStaticFunctionsTable* staticFunctions(JSC::ExecState*); 968e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSC::JSObject* prototype(JSC::ExecState*); 978e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 988e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project OpaqueJSClass* parentClass; 998e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project OpaqueJSClass* prototypeClass; 1008e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1018e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSObjectInitializeCallback initialize; 1028e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSObjectFinalizeCallback finalize; 1038e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSObjectHasPropertyCallback hasProperty; 1048e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSObjectGetPropertyCallback getProperty; 1058e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSObjectSetPropertyCallback setProperty; 1068e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSObjectDeletePropertyCallback deleteProperty; 1078e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSObjectGetPropertyNamesCallback getPropertyNames; 1088e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSObjectCallAsFunctionCallback callAsFunction; 1098e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSObjectCallAsConstructorCallback callAsConstructor; 1108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSObjectHasInstanceCallback hasInstance; 1118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSObjectConvertToTypeCallback convertToType; 1128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectprivate: 1148e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project friend struct OpaqueJSClassContextData; 1158e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1168e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project OpaqueJSClass(); 1178e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project OpaqueJSClass(const OpaqueJSClass&); 1188e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project OpaqueJSClass(const JSClassDefinition*, OpaqueJSClass* protoClass); 1198e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1208e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project OpaqueJSClassContextData& contextData(JSC::ExecState*); 1218e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1228e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // UStrings in these data members should not be put into any IdentifierTable. 1238e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project JSC::UString m_className; 1248e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project OpaqueJSClassStaticValuesTable* m_staticValues; 1258e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project OpaqueJSClassStaticFunctionsTable* m_staticFunctions; 1268e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project}; 1278e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1288e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#endif // JSClassRef_h 129