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/*
* Copyright (C) 2008-2021 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#pragma once
#include <JavaScriptCore/JSGlobalObject.h>
#include <JavaScriptCore/WeakGCMap.h>
#include <wtf/Compiler.h>
#include <wtf/Forward.h>
namespace JSC {
enum class JSPromiseRejectionOperation : unsigned;
}
namespace WebCore {
class DOMConstructors;
class DOMGuardedObject;
class JSBuiltinInternalFunctions;
class Event;
class DOMWrapperWorld;
class ScriptExecutionContext;
using JSDOMStructureMap = UncheckedKeyHashMap<const JSC::ClassInfo*, JSC::WriteBarrier<JSC::Structure>>;
using DOMGuardedObjectSet = UncheckedKeyHashSet<DOMGuardedObject*>;
class WEBCORE_EXPORT JSDOMGlobalObject : public JSC::JSGlobalObject {
public:
struct JSDOMGlobalObjectData;
using Base = JSC::JSGlobalObject;
static const JSC::ClassInfo s_info;
template<typename, JSC::SubspaceAccess>
static void subspaceFor(JSC::VM&) { RELEASE_ASSERT_NOT_REACHED(); }
static void destroy(JSC::JSCell*);
public:
Lock& gcLock() WTF_RETURNS_LOCK(m_gcLock) { return m_gcLock; }
JSDOMStructureMap& structures() WTF_REQUIRES_LOCK(m_gcLock) { return m_structures; }
DOMGuardedObjectSet& guardedObjects() WTF_REQUIRES_LOCK(m_gcLock) { return m_guardedObjects; }
DOMConstructors& constructors() { return *m_constructors; }
// No locking is necessary for call sites that do not mutate the containers and are not on the GC thread.
const JSDOMStructureMap& structures() const WTF_IGNORES_THREAD_SAFETY_ANALYSIS { ASSERT(!Thread::mayBeGCThread()); return m_structures; }
const DOMGuardedObjectSet& guardedObjects() const WTF_IGNORES_THREAD_SAFETY_ANALYSIS { ASSERT(!Thread::mayBeGCThread()); return m_guardedObjects; }
const DOMConstructors& constructors() const { ASSERT(!Thread::mayBeGCThread()); return *m_constructors; }
// 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.
inline JSDOMStructureMap& structures(NoLockingNecessaryTag);
inline DOMGuardedObjectSet& guardedObjects(NoLockingNecessaryTag);
RefPtr<ScriptExecutionContext> protectedScriptExecutionContext() const;
ScriptExecutionContext* scriptExecutionContext() const;
static String codeForEval(JSC::JSGlobalObject*, JSC::JSValue);
static bool canCompileStrings(JSC::JSGlobalObject*, JSC::CompilationType, String, const JSC::ArgList&);
static JSC::Structure* trustedScriptStructure(JSC::JSGlobalObject*);
// https://tc39.es/ecma262/#sec-agent-clusters
String agentClusterID() const;
static String defaultAgentClusterID();
// Make binding code generation easier.
JSDOMGlobalObject* globalObject() { return this; }
DECLARE_VISIT_CHILDREN;
DOMWrapperWorld& world() { return m_world.get(); }
bool worldIsNormal() const { return m_worldIsNormal; }
static constexpr ptrdiff_t offsetOfWorldIsNormal() { return OBJECT_OFFSETOF(JSDOMGlobalObject, m_worldIsNormal); }
JSBuiltinInternalFunctions& builtinInternalFunctions() { return m_builtinInternalFunctions; }
static void reportUncaughtExceptionAtEventLoop(JSGlobalObject*, JSC::Exception*);
static JSC::JSGlobalObject* deriveShadowRealmGlobalObject(JSC::JSGlobalObject*);
void clearDOMGuardedObjects() const;
JSC::JSGlobalProxy& proxy() const { ASSERT(m_proxy); return *m_proxy.get(); }
JSC::JSFunction* createCrossOriginFunction(JSC::JSGlobalObject*, JSC::PropertyName, JSC::NativeFunction, unsigned length);
JSC::GetterSetter* createCrossOriginGetterSetter(JSC::JSGlobalObject*, JSC::PropertyName, JSC::GetValueFunc, JSC::PutValueFunc);
public:
~JSDOMGlobalObject();
static constexpr const JSC::ClassInfo* info() { return &s_info; }
inline static JSC::Structure* createStructure(JSC::VM&, JSC::JSValue);
protected:
JSDOMGlobalObject(JSC::VM&, JSC::Structure*, Ref<DOMWrapperWorld>&&, const JSC::GlobalObjectMethodTable* = nullptr);
void finishCreation(JSC::VM&);
void finishCreation(JSC::VM&, JSC::JSObject*);
static void promiseRejectionTracker(JSC::JSGlobalObject*, JSC::JSPromise*, JSC::JSPromiseRejectionOperation);
#if ENABLE(WEBASSEMBLY)
static JSC::JSPromise* compileStreaming(JSC::JSGlobalObject*, JSC::JSValue);
static JSC::JSPromise* instantiateStreaming(JSC::JSGlobalObject*, JSC::JSValue, JSC::JSObject*);
#endif
static JSC::Identifier moduleLoaderResolve(JSC::JSGlobalObject*, JSC::JSModuleLoader*, JSC::JSValue, JSC::JSValue, JSC::JSValue);
static JSC::JSInternalPromise* moduleLoaderFetch(JSC::JSGlobalObject*, JSC::JSModuleLoader*, JSC::JSValue, JSC::JSValue, JSC::JSValue);
static JSC::JSValue moduleLoaderEvaluate(JSC::JSGlobalObject*, JSC::JSModuleLoader*, JSC::JSValue, JSC::JSValue, JSC::JSValue, JSC::JSValue, JSC::JSValue);
static JSC::JSInternalPromise* moduleLoaderImportModule(JSC::JSGlobalObject*, JSC::JSModuleLoader*, JSC::JSString*, JSC::JSValue, const JSC::SourceOrigin&);
static JSC::JSObject* moduleLoaderCreateImportMetaProperties(JSC::JSGlobalObject*, JSC::JSModuleLoader*, JSC::JSValue, JSC::JSModuleRecord*, JSC::JSValue);
JSDOMStructureMap m_structures WTF_GUARDED_BY_LOCK(m_gcLock);
DOMGuardedObjectSet m_guardedObjects WTF_GUARDED_BY_LOCK(m_gcLock);
std::unique_ptr<DOMConstructors> m_constructors;
Ref<DOMWrapperWorld> m_world;
uint8_t m_worldIsNormal;
Lock m_gcLock;
JSC::WriteBarrier<JSC::JSGlobalProxy> m_proxy;
private:
void addBuiltinGlobals(JSC::VM&);
friend JSBuiltinInternalFunctions;
using CrossOriginMapKey = std::pair<JSC::JSGlobalObject*, void*>;
UniqueRef<JSBuiltinInternalFunctions> m_builtinInternalFunctions;
JSC::WeakGCMap<CrossOriginMapKey, JSC::JSFunction> m_crossOriginFunctionMap;
JSC::WeakGCMap<CrossOriginMapKey, JSC::GetterSetter> m_crossOriginGetterSetterMap;
};
JSDOMGlobalObject* toJSDOMGlobalObject(ScriptExecutionContext&, DOMWrapperWorld&);
WEBCORE_EXPORT JSDOMGlobalObject& callerGlobalObject(JSC::JSGlobalObject&, JSC::CallFrame*);
JSDOMGlobalObject& legacyActiveGlobalObjectForAccessor(JSC::JSGlobalObject&, JSC::CallFrame*);
template<class JSClass>
inline JSClass* toJSDOMGlobalObject(JSC::VM&, JSC::JSValue);
} // namespace WebCore
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