163 lines
7.3 KiB
C++
163 lines
7.3 KiB
C++
/*
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* Copyright (C) 2008-2021 Apple Inc. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#pragma once
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#include "WebCoreJSBuiltinInternals.h"
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#include <JavaScriptCore/HeapInlines.h>
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#include <JavaScriptCore/JSGlobalObject.h>
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#include <JavaScriptCore/JSObjectInlines.h>
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#include <JavaScriptCore/WeakGCMap.h>
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namespace WebCore {
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class DOMConstructors;
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class DOMGuardedObject;
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class Event;
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class DOMWrapperWorld;
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class ScriptExecutionContext;
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using JSDOMStructureMap = HashMap<const JSC::ClassInfo*, JSC::WriteBarrier<JSC::Structure>>;
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using DOMGuardedObjectSet = HashSet<DOMGuardedObject*>;
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class WEBCORE_EXPORT JSDOMGlobalObject : public JSC::JSGlobalObject {
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public:
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struct JSDOMGlobalObjectData;
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using Base = JSC::JSGlobalObject;
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static const JSC::ClassInfo s_info;
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template<typename, JSC::SubspaceAccess>
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static void subspaceFor(JSC::VM&) { RELEASE_ASSERT_NOT_REACHED(); }
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static void destroy(JSC::JSCell*);
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public:
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Lock& gcLock() WTF_RETURNS_LOCK(m_gcLock) { return m_gcLock; }
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JSDOMStructureMap& structures() WTF_REQUIRES_LOCK(m_gcLock) { return m_structures; }
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DOMGuardedObjectSet& guardedObjects() WTF_REQUIRES_LOCK(m_gcLock) { return m_guardedObjects; }
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DOMConstructors& constructors() { return *m_constructors; }
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// No locking is necessary for call sites that do not mutate the containers and are not on the GC thread.
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const JSDOMStructureMap& structures() const WTF_IGNORES_THREAD_SAFETY_ANALYSIS { ASSERT(!Thread::mayBeGCThread()); return m_structures; }
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const DOMGuardedObjectSet& guardedObjects() const WTF_IGNORES_THREAD_SAFETY_ANALYSIS { ASSERT(!Thread::mayBeGCThread()); return m_guardedObjects; }
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const DOMConstructors& constructors() const { ASSERT(!Thread::mayBeGCThread()); return *m_constructors; }
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// The following don't require grabbing the gcLock first and should only be called when the Heap says that mutators don't have to be fenced.
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JSDOMStructureMap& structures(NoLockingNecessaryTag) WTF_IGNORES_THREAD_SAFETY_ANALYSIS { ASSERT(!vm().heap.mutatorShouldBeFenced()); return m_structures; }
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DOMGuardedObjectSet& guardedObjects(NoLockingNecessaryTag) WTF_IGNORES_THREAD_SAFETY_ANALYSIS { ASSERT(!vm().heap.mutatorShouldBeFenced()); return m_guardedObjects; }
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ScriptExecutionContext* scriptExecutionContext() const;
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// Make binding code generation easier.
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JSDOMGlobalObject* globalObject() { return this; }
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DECLARE_VISIT_CHILDREN;
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DOMWrapperWorld& world() { return m_world.get(); }
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bool worldIsNormal() const { return m_worldIsNormal; }
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static ptrdiff_t offsetOfWorldIsNormal() { return OBJECT_OFFSETOF(JSDOMGlobalObject, m_worldIsNormal); }
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JSBuiltinInternalFunctions& builtinInternalFunctions() { return m_builtinInternalFunctions; }
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static void reportUncaughtExceptionAtEventLoop(JSGlobalObject*, JSC::Exception*);
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void clearDOMGuardedObjects() const;
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JSC::JSProxy& proxy() const { ASSERT(m_proxy); return *m_proxy.get(); }
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JSC::JSFunction* createCrossOriginFunction(JSC::JSGlobalObject*, JSC::PropertyName, JSC::NativeFunction, unsigned length);
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JSC::GetterSetter* createCrossOriginGetterSetter(JSC::JSGlobalObject*, JSC::PropertyName, JSC::GetValueFunc, JSC::PutValueFunc);
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public:
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~JSDOMGlobalObject();
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static constexpr const JSC::ClassInfo* info() { return &s_info; }
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static JSC::Structure* createStructure(JSC::VM& vm, JSC::JSValue prototype)
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{
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return JSC::Structure::create(vm, 0, prototype, JSC::TypeInfo(JSC::GlobalObjectType, StructureFlags), info());
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}
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protected:
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JSDOMGlobalObject(JSC::VM&, JSC::Structure*, Ref<DOMWrapperWorld>&&, const JSC::GlobalObjectMethodTable* = nullptr);
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void finishCreation(JSC::VM&);
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void finishCreation(JSC::VM&, JSC::JSObject*);
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static void promiseRejectionTracker(JSC::JSGlobalObject*, JSC::JSPromise*, JSC::JSPromiseRejectionOperation);
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#if ENABLE(WEBASSEMBLY)
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static JSC::JSPromise* compileStreaming(JSC::JSGlobalObject*, JSC::JSValue);
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static JSC::JSPromise* instantiateStreaming(JSC::JSGlobalObject*, JSC::JSValue, JSC::JSObject*);
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#endif
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static JSC::Identifier moduleLoaderResolve(JSC::JSGlobalObject*, JSC::JSModuleLoader*, JSC::JSValue, JSC::JSValue, JSC::JSValue);
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static JSC::JSInternalPromise* moduleLoaderFetch(JSC::JSGlobalObject*, JSC::JSModuleLoader*, JSC::JSValue, JSC::JSValue, JSC::JSValue);
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static JSC::JSValue moduleLoaderEvaluate(JSC::JSGlobalObject*, JSC::JSModuleLoader*, JSC::JSValue, JSC::JSValue, JSC::JSValue, JSC::JSValue, JSC::JSValue);
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static JSC::JSInternalPromise* moduleLoaderImportModule(JSC::JSGlobalObject*, JSC::JSModuleLoader*, JSC::JSString*, JSC::JSValue, const JSC::SourceOrigin&);
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static JSC::JSObject* moduleLoaderCreateImportMetaProperties(JSC::JSGlobalObject*, JSC::JSModuleLoader*, JSC::JSValue, JSC::JSModuleRecord*, JSC::JSValue);
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JSDOMStructureMap m_structures WTF_GUARDED_BY_LOCK(m_gcLock);
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DOMGuardedObjectSet m_guardedObjects WTF_GUARDED_BY_LOCK(m_gcLock);
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std::unique_ptr<DOMConstructors> m_constructors;
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Ref<DOMWrapperWorld> m_world;
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uint8_t m_worldIsNormal;
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Lock m_gcLock;
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JSC::WriteBarrier<JSC::JSProxy> m_proxy;
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private:
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void addBuiltinGlobals(JSC::VM&);
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friend void JSBuiltinInternalFunctions::initialize(JSDOMGlobalObject&);
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using CrossOriginMapKey = std::pair<JSC::JSGlobalObject*, void*>;
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JSBuiltinInternalFunctions m_builtinInternalFunctions;
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JSC::WeakGCMap<CrossOriginMapKey, JSC::JSFunction> m_crossOriginFunctionMap;
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JSC::WeakGCMap<CrossOriginMapKey, JSC::GetterSetter> m_crossOriginGetterSetterMap;
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};
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JSDOMGlobalObject* toJSDOMGlobalObject(ScriptExecutionContext&, DOMWrapperWorld&);
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template<class JSClass>
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JSClass* toJSDOMGlobalObject(JSC::VM& vm, JSC::JSValue value)
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{
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static_assert(std::is_base_of_v<JSDOMGlobalObject, JSClass>);
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if (auto* object = value.getObject()) {
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if (object->type() == JSC::PureForwardingProxyType)
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return JSC::jsDynamicCast<JSClass*>(vm, JSC::jsCast<JSC::JSProxy*>(object)->target());
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if (object->inherits<JSClass>(vm))
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return JSC::jsCast<JSClass*>(object);
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}
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return nullptr;
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}
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} // namespace WebCore
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