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/*
* Copyright (C) 2015, 2016 Canon Inc. All rights reserved.
* Copyright (C) 2016-2021 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#pragma once
#include "JSDOMBuiltinConstructorBase.h"
#include "JSDOMExceptionHandling.h"
#include "JSDOMWrapperCache.h"
namespace WebCore {
template<typename JSClass> class JSDOMBuiltinConstructor final : public JSDOMBuiltinConstructorBase {
public:
using Base = JSDOMBuiltinConstructorBase;
static JSDOMBuiltinConstructor* create(JSC::VM&, JSC::Structure*, JSDOMGlobalObject&);
static JSC::Structure* createStructure(JSC::VM&, JSC::JSGlobalObject&, JSC::JSValue prototype);
DECLARE_INFO;
// Usually defined for each specialization class.
static JSC::JSValue prototypeForStructure(JSC::VM&, const JSDOMGlobalObject&);
static JSC::EncodedJSValue JSC_HOST_CALL_ATTRIBUTES construct(JSC::JSGlobalObject*, JSC::CallFrame*);
private:
JSDOMBuiltinConstructor(JSC::VM& vm, JSC::Structure* structure)
: Base(vm, structure, construct)
{
}
void finishCreation(JSC::VM&, JSDOMGlobalObject&);
JSC::Structure* getDOMStructureForJSObject(JSC::JSGlobalObject*, JSC::JSObject* newTarget);
// Usually defined for each specialization class.
void initializeProperties(JSC::VM&, JSDOMGlobalObject&) {}
// Must be defined for each specialization class.
JSC::FunctionExecutable* initializeExecutable(JSC::VM&);
};
template<typename JSClass> inline JSDOMBuiltinConstructor<JSClass>* JSDOMBuiltinConstructor<JSClass>::create(JSC::VM& vm, JSC::Structure* structure, JSDOMGlobalObject& globalObject)
{
JSDOMBuiltinConstructor* constructor = new (NotNull, JSC::allocateCell<JSDOMBuiltinConstructor>(vm)) JSDOMBuiltinConstructor(vm, structure);
constructor->finishCreation(vm, globalObject);
return constructor;
}
template<typename JSClass> inline JSC::Structure* JSDOMBuiltinConstructor<JSClass>::createStructure(JSC::VM& vm, JSC::JSGlobalObject& globalObject, JSC::JSValue prototype)
{
return JSC::Structure::create(vm, &globalObject, prototype, JSC::TypeInfo(JSC::InternalFunctionType, StructureFlags), info());
}
template<typename JSClass> inline void JSDOMBuiltinConstructor<JSClass>::finishCreation(JSC::VM& vm, JSDOMGlobalObject& globalObject)
{
Base::finishCreation(vm);
ASSERT(inherits(info()));
setInitializeFunction(vm, *JSC::JSFunction::create(vm, initializeExecutable(vm), &globalObject));
initializeProperties(vm, globalObject);
}
template<typename JSClass> inline JSC::Structure* JSDOMBuiltinConstructor<JSClass>::getDOMStructureForJSObject(JSC::JSGlobalObject* lexicalGlobalObject, JSC::JSObject* newTarget)
{
auto& vm = JSC::getVM(lexicalGlobalObject);
if (LIKELY(newTarget == this))
return getDOMStructure<JSClass>(vm, *globalObject());
auto scope = DECLARE_THROW_SCOPE(vm);
auto* newTargetGlobalObject = JSC::getFunctionRealm(lexicalGlobalObject, newTarget);
RETURN_IF_EXCEPTION(scope, nullptr);
auto* baseStructure = getDOMStructure<JSClass>(vm, *JSC::jsCast<JSDOMGlobalObject*>(newTargetGlobalObject));
RELEASE_AND_RETURN(scope, JSC::InternalFunction::createSubclassStructure(lexicalGlobalObject, newTarget, baseStructure));
}
template<typename JSClass> inline JSC::EncodedJSValue JSC_HOST_CALL_ATTRIBUTES JSDOMBuiltinConstructor<JSClass>::construct(JSC::JSGlobalObject* lexicalGlobalObject, JSC::CallFrame* callFrame)
{
ASSERT(callFrame);
auto* castedThis = JSC::jsCast<JSDOMBuiltinConstructor*>(callFrame->jsCallee());
auto* structure = castedThis->getDOMStructureForJSObject(lexicalGlobalObject, asObject(callFrame->newTarget()));
if (UNLIKELY(!structure))
return {};
auto* jsObject = JSClass::create(structure, castedThis->globalObject());
JSC::call(lexicalGlobalObject, castedThis->initializeFunction(), jsObject, JSC::ArgList(callFrame), "This error should never occur: initialize function is guaranteed to be callable."_s);
return JSC::JSValue::encode(jsObject);
}
} // namespace WebCore
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