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/*
* Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
* Copyright (C) 2004, 2005, 2006, 2007, 2008 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
*
*/
#include "config.h"
#include "StringObject.h"
#include "Error.h"
#include "JSGlobalObject.h"
#include "PropertyNameArray.h"
namespace JSC {
ASSERT_CLASS_FITS_IN_CELL(StringObject);
ASSERT_HAS_TRIVIAL_DESTRUCTOR(StringObject);
const ClassInfo StringObject::s_info = { "String", &JSWrapperObject::s_info, 0, 0, CREATE_METHOD_TABLE(StringObject) };
StringObject::StringObject(JSGlobalData& globalData, Structure* structure)
: JSWrapperObject(globalData, structure)
{
}
void StringObject::finishCreation(JSGlobalData& globalData, JSString* string)
{
Base::finishCreation(globalData);
ASSERT(inherits(&s_info));
setInternalValue(globalData, string);
}
bool StringObject::getOwnPropertySlot(JSCell* cell, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
{
StringObject* thisObject = jsCast<StringObject*>(cell);
if (thisObject->internalValue()->getStringPropertySlot(exec, propertyName, slot))
return true;
return JSObject::getOwnPropertySlot(thisObject, exec, propertyName, slot);
}
bool StringObject::getOwnPropertySlotByIndex(JSCell* cell, ExecState* exec, unsigned propertyName, PropertySlot& slot)
{
StringObject* thisObject = jsCast<StringObject*>(cell);
if (thisObject->internalValue()->getStringPropertySlot(exec, propertyName, slot))
return true;
return JSObject::getOwnPropertySlot(thisObject, exec, Identifier::from(exec, propertyName), slot);
}
bool StringObject::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, PropertyName propertyName, PropertyDescriptor& descriptor)
{
StringObject* thisObject = jsCast<StringObject*>(object);
if (thisObject->internalValue()->getStringPropertyDescriptor(exec, propertyName, descriptor))
return true;
return JSObject::getOwnPropertyDescriptor(thisObject, exec, propertyName, descriptor);
}
void StringObject::put(JSCell* cell, ExecState* exec, PropertyName propertyName, JSValue value, PutPropertySlot& slot)
{
if (propertyName == exec->propertyNames().length) {
if (slot.isStrictMode())
throwTypeError(exec, StrictModeReadonlyPropertyWriteError);
return;
}
JSObject::put(cell, exec, propertyName, value, slot);
}
bool StringObject::defineOwnProperty(JSObject* object, ExecState* exec, PropertyName propertyName, PropertyDescriptor& descriptor, bool throwException)
{
StringObject* thisObject = jsCast<StringObject*>(object);
if (propertyName == exec->propertyNames().length) {
if (!object->isExtensible()) {
if (throwException)
throwError(exec, createTypeError(exec, "Attempting to define property on object that is not extensible."));
return false;
}
if (descriptor.configurablePresent() && descriptor.configurable()) {
if (throwException)
throwError(exec, createTypeError(exec, "Attempting to configurable attribute of unconfigurable property."));
return false;
}
if (descriptor.enumerablePresent() && descriptor.enumerable()) {
if (throwException)
throwError(exec, createTypeError(exec, "Attempting to change enumerable attribute of unconfigurable property."));
return false;
}
if (descriptor.isAccessorDescriptor()) {
if (throwException)
throwError(exec, createTypeError(exec, "Attempting to change access mechanism for an unconfigurable property."));
return false;
}
if (descriptor.writablePresent() && descriptor.writable()) {
if (throwException)
throwError(exec, createTypeError(exec, "Attempting to change writable attribute of unconfigurable property."));
return false;
}
if (!descriptor.value())
return true;
if (propertyName == exec->propertyNames().length && sameValue(exec, descriptor.value(), jsNumber(thisObject->internalValue()->length())))
return true;
if (throwException)
throwError(exec, createTypeError(exec, "Attempting to change value of a readonly property."));
return false;
}
return Base::defineOwnProperty(object, exec, propertyName, descriptor, throwException);
}
bool StringObject::deleteProperty(JSCell* cell, ExecState* exec, PropertyName propertyName)
{
StringObject* thisObject = jsCast<StringObject*>(cell);
if (propertyName == exec->propertyNames().length)
return false;
unsigned i = propertyName.asIndex();
if (thisObject->internalValue()->canGetIndex(i)) {
ASSERT(i != PropertyName::NotAnIndex); // No need for an explicit check, the above test would always fail!
return false;
}
return JSObject::deleteProperty(thisObject, exec, propertyName);
}
void StringObject::getOwnPropertyNames(JSObject* object, ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
{
StringObject* thisObject = jsCast<StringObject*>(object);
int size = thisObject->internalValue()->length();
for (int i = 0; i < size; ++i)
propertyNames.add(Identifier(exec, UString::number(i)));
if (mode == IncludeDontEnumProperties)
propertyNames.add(exec->propertyNames().length);
return JSObject::getOwnPropertyNames(thisObject, exec, propertyNames, mode);
}
StringObject* constructString(ExecState* exec, JSGlobalObject* globalObject, JSValue string)
{
StringObject* object = StringObject::create(exec, globalObject->stringObjectStructure());
object->setInternalValue(exec->globalData(), string);
return object;
}
} // namespace JSC
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