blob: dd06f13f407f34ee4cbb99d2c565e07fa3f65c53 [file] [log] [blame]
/*
* Copyright (C) 1999-2002 Harri Porten (porten@kde.org)
* Copyright (C) 2001 Peter Kelly (pmk@post.com)
* Copyright (C) 2004-2017 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "GetterSetter.h"
#include "Error.h"
#include "Exception.h"
#include "JSObject.h"
#include "JSCInlines.h"
#include <wtf/Assertions.h>
namespace JSC {
STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(GetterSetter);
const ClassInfo GetterSetter::s_info = { "GetterSetter", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(GetterSetter) };
void GetterSetter::visitChildren(JSCell* cell, SlotVisitor& visitor)
{
GetterSetter* thisObject = jsCast<GetterSetter*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
JSCell::visitChildren(thisObject, visitor);
visitor.append(thisObject->m_getter);
visitor.append(thisObject->m_setter);
}
GetterSetter* GetterSetter::withGetter(VM& vm, JSGlobalObject* globalObject, JSObject* newGetter)
{
if (isGetterNull()) {
setGetter(vm, globalObject, newGetter);
return this;
}
GetterSetter* result = GetterSetter::create(vm, globalObject);
result->setGetter(vm, globalObject, newGetter);
result->setSetter(vm, globalObject, setter());
return result;
}
GetterSetter* GetterSetter::withSetter(VM& vm, JSGlobalObject* globalObject, JSObject* newSetter)
{
if (isSetterNull()) {
setSetter(vm, globalObject, newSetter);
return this;
}
GetterSetter* result = GetterSetter::create(vm, globalObject);
result->setGetter(vm, globalObject, getter());
result->setSetter(vm, globalObject, newSetter);
return result;
}
JSValue callGetter(ExecState* exec, JSValue base, JSValue getterSetter)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
// FIXME: Some callers may invoke get() without checking for an exception first.
// We work around that by checking here.
RETURN_IF_EXCEPTION(scope, scope.exception()->value());
JSObject* getter = jsCast<GetterSetter*>(getterSetter)->getter();
CallData callData;
CallType callType = getter->methodTable(vm)->getCallData(getter, callData);
scope.release();
return call(exec, getter, callType, callData, base, ArgList());
}
bool callSetter(ExecState* exec, JSValue base, JSValue getterSetter, JSValue value, ECMAMode ecmaMode)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
GetterSetter* getterSetterObj = jsCast<GetterSetter*>(getterSetter);
if (getterSetterObj->isSetterNull())
return typeError(exec, scope, ecmaMode == StrictMode, ASCIILiteral(ReadonlyPropertyWriteError));
JSObject* setter = getterSetterObj->setter();
MarkedArgumentBuffer args;
args.append(value);
ASSERT(!args.hasOverflowed());
CallData callData;
CallType callType = setter->methodTable(vm)->getCallData(setter, callData);
scope.release();
call(exec, setter, callType, callData, base, args);
return true;
}
} // namespace JSC