1/*
2 * Copyright (C) 2015, 2016 Canon Inc. All rights reserved.
3 * Copyright (C) 2016 Apple Inc. All rights reserved.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20#pragma once
21
22#include "JSDOMBuiltinConstructorBase.h"
23#include "JSDOMExceptionHandling.h"
24#include "JSDOMWrapperCache.h"
25
26namespace WebCore {
27
28template<typename JSClass> class JSDOMBuiltinConstructor : public JSDOMBuiltinConstructorBase {
29public:
30 using Base = JSDOMBuiltinConstructorBase;
31
32 static JSDOMBuiltinConstructor* create(JSC::VM&, JSC::Structure*, JSDOMGlobalObject&);
33 static JSC::Structure* createStructure(JSC::VM&, JSC::JSGlobalObject&, JSC::JSValue prototype);
34
35 DECLARE_INFO;
36
37 // Usually defined for each specialization class.
38 static JSC::JSValue prototypeForStructure(JSC::VM&, const JSDOMGlobalObject&);
39
40private:
41 JSDOMBuiltinConstructor(JSC::Structure* structure, JSDOMGlobalObject& globalObject)
42 : Base(structure, globalObject)
43 {
44 }
45
46 void finishCreation(JSC::VM&, JSDOMGlobalObject&);
47 static JSC::ConstructType getConstructData(JSC::JSCell*, JSC::ConstructData&);
48 static JSC::EncodedJSValue JSC_HOST_CALL construct(JSC::ExecState*);
49
50 JSC::EncodedJSValue callConstructor(JSC::ExecState&, JSC::JSObject&);
51 JSC::EncodedJSValue callConstructor(JSC::ExecState&, JSC::JSObject*);
52
53 // Usually defined for each specialization class.
54 void initializeProperties(JSC::VM&, JSDOMGlobalObject&) { }
55 // Must be defined for each specialization class.
56 JSC::FunctionExecutable* initializeExecutable(JSC::VM&);
57};
58
59template<typename JSClass> inline JSDOMBuiltinConstructor<JSClass>* JSDOMBuiltinConstructor<JSClass>::create(JSC::VM& vm, JSC::Structure* structure, JSDOMGlobalObject& globalObject)
60{
61 JSDOMBuiltinConstructor* constructor = new (NotNull, JSC::allocateCell<JSDOMBuiltinConstructor>(vm.heap)) JSDOMBuiltinConstructor(structure, globalObject);
62 constructor->finishCreation(vm, globalObject);
63 return constructor;
64}
65
66template<typename JSClass> inline JSC::Structure* JSDOMBuiltinConstructor<JSClass>::createStructure(JSC::VM& vm, JSC::JSGlobalObject& globalObject, JSC::JSValue prototype)
67{
68 return JSC::Structure::create(vm, &globalObject, prototype, JSC::TypeInfo(JSC::ObjectType, StructureFlags), info());
69}
70
71template<typename JSClass> inline void JSDOMBuiltinConstructor<JSClass>::finishCreation(JSC::VM& vm, JSDOMGlobalObject& globalObject)
72{
73 Base::finishCreation(vm);
74 ASSERT(inherits(vm, info()));
75 setInitializeFunction(vm, *JSC::JSFunction::create(vm, initializeExecutable(vm), &globalObject));
76 initializeProperties(vm, globalObject);
77}
78
79template<typename JSClass> inline JSC::EncodedJSValue JSDOMBuiltinConstructor<JSClass>::callConstructor(JSC::ExecState& state, JSC::JSObject& object)
80{
81 Base::callFunctionWithCurrentArguments(state, object, *initializeFunction());
82 return JSC::JSValue::encode(&object);
83}
84
85template<typename JSClass> inline JSC::EncodedJSValue JSDOMBuiltinConstructor<JSClass>::callConstructor(JSC::ExecState& state, JSC::JSObject* object)
86{
87 JSC::VM& vm = state.vm();
88 auto scope = DECLARE_THROW_SCOPE(vm);
89 if (!object)
90 return throwConstructorScriptExecutionContextUnavailableError(state, scope, info()->className);
91 return callConstructor(state, *object);
92}
93
94template<typename JSClass> inline
95typename std::enable_if<JSDOMObjectInspector<JSClass>::isSimpleWrapper, JSC::JSObject&>::type createJSObject(JSDOMBuiltinConstructor<JSClass>& constructor)
96{
97 auto& globalObject = *constructor.globalObject();
98 return *JSClass::create(getDOMStructure<JSClass>(globalObject.vm(), globalObject), &globalObject, JSClass::DOMWrapped::create());
99}
100
101template<typename JSClass> inline
102typename std::enable_if<JSDOMObjectInspector<JSClass>::isBuiltin, JSC::JSObject&>::type createJSObject(JSDOMBuiltinConstructor<JSClass>& constructor)
103{
104 auto& globalObject = *constructor.globalObject();
105 return *JSClass::create(getDOMStructure<JSClass>(globalObject.vm(), globalObject), &globalObject);
106}
107
108template<typename JSClass> inline
109typename std::enable_if<JSDOMObjectInspector<JSClass>::isComplexWrapper, JSC::JSObject*>::type createJSObject(JSDOMBuiltinConstructor<JSClass>& constructor)
110{
111 ScriptExecutionContext* context = constructor.scriptExecutionContext();
112 if (!context)
113 return nullptr;
114 auto& globalObject = *constructor.globalObject();
115 return JSClass::create(getDOMStructure<JSClass>(globalObject.vm(), globalObject), &globalObject, JSClass::DOMWrapped::create(*context));
116}
117
118template<typename JSClass> inline JSC::EncodedJSValue JSC_HOST_CALL JSDOMBuiltinConstructor<JSClass>::construct(JSC::ExecState* state)
119{
120 ASSERT(state);
121 auto* castedThis = JSC::jsCast<JSDOMBuiltinConstructor*>(state->jsCallee());
122 return castedThis->callConstructor(*state, createJSObject(*castedThis));
123}
124
125template<typename JSClass> inline JSC::ConstructType JSDOMBuiltinConstructor<JSClass>::getConstructData(JSC::JSCell*, JSC::ConstructData& constructData)
126{
127 constructData.native.function = construct;
128 return JSC::ConstructType::Host;
129}
130
131} // namespace WebCore
132