1 | /* |
2 | * Copyright (C) 2008-2018 Apple Inc. All Rights Reserved. |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions |
6 | * are met: |
7 | * 1. Redistributions of source code must retain the above copyright |
8 | * notice, this list of conditions and the following disclaimer. |
9 | * 2. Redistributions in binary form must reproduce the above copyright |
10 | * notice, this list of conditions and the following disclaimer in the |
11 | * documentation and/or other materials provided with the distribution. |
12 | * |
13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
14 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
17 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
18 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
19 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
20 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
21 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
23 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 | * |
25 | */ |
26 | |
27 | #pragma once |
28 | |
29 | #include "WebCoreJSBuiltinInternals.h" |
30 | #include <JavaScriptCore/HeapInlines.h> |
31 | #include <JavaScriptCore/JSGlobalObject.h> |
32 | #include <JavaScriptCore/LockDuringMarking.h> |
33 | |
34 | namespace WebCore { |
35 | |
36 | class DOMGuardedObject; |
37 | class Event; |
38 | class DOMWrapperWorld; |
39 | class ScriptExecutionContext; |
40 | |
41 | using JSDOMStructureMap = HashMap<const JSC::ClassInfo*, JSC::WriteBarrier<JSC::Structure>>; |
42 | using JSDOMConstructorMap = HashMap<const JSC::ClassInfo*, JSC::WriteBarrier<JSC::JSObject>>; |
43 | using DOMGuardedObjectSet = HashSet<DOMGuardedObject*>; |
44 | |
45 | class WEBCORE_EXPORT JSDOMGlobalObject : public JSC::JSGlobalObject { |
46 | using Base = JSC::JSGlobalObject; |
47 | protected: |
48 | struct JSDOMGlobalObjectData; |
49 | |
50 | JSDOMGlobalObject(JSC::VM&, JSC::Structure*, Ref<DOMWrapperWorld>&&, const JSC::GlobalObjectMethodTable* = nullptr); |
51 | static void destroy(JSC::JSCell*); |
52 | void finishCreation(JSC::VM&); |
53 | void finishCreation(JSC::VM&, JSC::JSObject*); |
54 | |
55 | public: |
56 | Lock& gcLock() { return m_gcLock; } |
57 | |
58 | JSDOMStructureMap& structures(const AbstractLocker&) { return m_structures; } |
59 | JSDOMConstructorMap& constructors(const AbstractLocker&) { return m_constructors; } |
60 | |
61 | DOMGuardedObjectSet& guardedObjects(const AbstractLocker&) { return m_guardedObjects; } |
62 | |
63 | ScriptExecutionContext* scriptExecutionContext() const; |
64 | |
65 | // Make binding code generation easier. |
66 | JSDOMGlobalObject* globalObject() { return this; } |
67 | |
68 | void setCurrentEvent(Event*); |
69 | Event* currentEvent() const; |
70 | |
71 | static void visitChildren(JSC::JSCell*, JSC::SlotVisitor&); |
72 | |
73 | DOMWrapperWorld& world() { return m_world.get(); } |
74 | bool worldIsNormal() const { return m_worldIsNormal; } |
75 | static ptrdiff_t offsetOfWorldIsNormal() { return OBJECT_OFFSETOF(JSDOMGlobalObject, m_worldIsNormal); } |
76 | |
77 | JSBuiltinInternalFunctions& builtinInternalFunctions() { return m_builtinInternalFunctions; } |
78 | |
79 | protected: |
80 | static const JSC::ClassInfo s_info; |
81 | |
82 | public: |
83 | ~JSDOMGlobalObject(); |
84 | |
85 | static constexpr const JSC::ClassInfo* info() { return &s_info; } |
86 | |
87 | static JSC::Structure* createStructure(JSC::VM& vm, JSC::JSValue prototype) |
88 | { |
89 | return JSC::Structure::create(vm, 0, prototype, JSC::TypeInfo(JSC::GlobalObjectType, StructureFlags), info()); |
90 | } |
91 | |
92 | protected: |
93 | static void promiseRejectionTracker(JSC::JSGlobalObject*, JSC::ExecState*, JSC::JSPromise*, JSC::JSPromiseRejectionOperation); |
94 | |
95 | JSDOMStructureMap m_structures; |
96 | JSDOMConstructorMap m_constructors; |
97 | DOMGuardedObjectSet m_guardedObjects; |
98 | |
99 | Ref<DOMWrapperWorld> m_world; |
100 | uint8_t m_worldIsNormal; |
101 | Lock m_gcLock; |
102 | |
103 | private: |
104 | void addBuiltinGlobals(JSC::VM&); |
105 | friend void JSBuiltinInternalFunctions::initialize(JSDOMGlobalObject&); |
106 | |
107 | Event* m_currentEvent { nullptr }; |
108 | |
109 | JSBuiltinInternalFunctions m_builtinInternalFunctions; |
110 | }; |
111 | |
112 | template<class ConstructorClass> |
113 | inline JSC::JSObject* getDOMConstructor(JSC::VM& vm, const JSDOMGlobalObject& globalObject) |
114 | { |
115 | if (JSC::JSObject* constructor = const_cast<JSDOMGlobalObject&>(globalObject).constructors(NoLockingNecessary).get(ConstructorClass::info()).get()) |
116 | return constructor; |
117 | JSC::JSObject* constructor = ConstructorClass::create(vm, ConstructorClass::createStructure(vm, const_cast<JSDOMGlobalObject&>(globalObject), ConstructorClass::prototypeForStructure(vm, globalObject)), const_cast<JSDOMGlobalObject&>(globalObject)); |
118 | ASSERT(!const_cast<JSDOMGlobalObject&>(globalObject).constructors(NoLockingNecessary).contains(ConstructorClass::info())); |
119 | JSC::WriteBarrier<JSC::JSObject> temp; |
120 | JSDOMGlobalObject& mutableGlobalObject = const_cast<JSDOMGlobalObject&>(globalObject); |
121 | auto locker = JSC::lockDuringMarking(vm.heap, mutableGlobalObject.gcLock()); |
122 | mutableGlobalObject.constructors(locker).add(ConstructorClass::info(), temp).iterator->value.set(vm, &globalObject, constructor); |
123 | return constructor; |
124 | } |
125 | |
126 | WEBCORE_EXPORT JSDOMGlobalObject& callerGlobalObject(JSC::ExecState&); |
127 | |
128 | JSDOMGlobalObject* toJSDOMGlobalObject(ScriptExecutionContext&, DOMWrapperWorld&); |
129 | |
130 | } // namespace WebCore |
131 | |