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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtScript module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qscriptclassobject_p.h"
#ifndef QT_NO_SCRIPT
#include "../api/qscriptengine.h"
#include "../api/qscriptengine_p.h"
#include "../api/qscriptclass.h"
#include "../api/qscriptclasspropertyiterator.h"
#include "Error.h"
#include "PropertyNameArray.h"
Q_DECLARE_METATYPE(QScriptContext*)
Q_DECLARE_METATYPE(QScriptValue)
Q_DECLARE_METATYPE(QScriptValueList)
QT_BEGIN_NAMESPACE
namespace QScript
{
QString qtStringFromJSCUString(const JSC::UString &str);
JSC::UString qtStringToJSCUString(const QString &str);
QScriptEnginePrivate *scriptEngineFromExec(JSC::ExecState *exec);
ClassObjectDelegate::ClassObjectDelegate(QScriptClass *scriptClass)
: m_scriptClass(scriptClass)
{
}
ClassObjectDelegate::~ClassObjectDelegate()
{
}
QScriptClass *ClassObjectDelegate::scriptClass() const
{
return m_scriptClass;
}
void ClassObjectDelegate::setScriptClass(QScriptClass *scriptClass)
{
m_scriptClass = scriptClass;
}
QScriptObjectDelegate::Type ClassObjectDelegate::type() const
{
return ClassObject;
}
bool ClassObjectDelegate::getOwnPropertySlot(QScriptObject* object,
JSC::ExecState *exec,
const JSC::Identifier &propertyName,
JSC::PropertySlot &slot)
{
QScriptEnginePrivate *engine = scriptEngineFromExec(exec);
QScriptValue scriptObject = engine->scriptValueFromJSCValue(object);
QString name = qtStringFromJSCUString(propertyName.ustring());
QScriptString scriptName = QScriptEnginePrivate::get(engine)->toStringHandle(name);
uint id = 0;
QScriptClass::QueryFlags flags = m_scriptClass->queryProperty(
scriptObject, scriptName, QScriptClass::HandlesReadAccess, &id);
if (flags & QScriptClass::HandlesReadAccess) {
QScriptValue value = m_scriptClass->property(scriptObject, scriptName, id);
slot.setValue(engine->scriptValueToJSCValue(value));
return true;
}
return QScriptObjectDelegate::getOwnPropertySlot(object, exec, propertyName, slot);
}
void ClassObjectDelegate::put(QScriptObject* object, JSC::ExecState *exec,
const JSC::Identifier &propertyName,
JSC::JSValue value, JSC::PutPropertySlot &slot)
{
QScriptEnginePrivate *engine = scriptEngineFromExec(exec);
QScriptValue scriptObject = engine->scriptValueFromJSCValue(object);
QString name = qtStringFromJSCUString(propertyName.ustring());
QScriptString scriptName = QScriptEnginePrivate::get(engine)->toStringHandle(name);
uint id = 0;
QScriptClass::QueryFlags flags = m_scriptClass->queryProperty(
scriptObject, scriptName, QScriptClass::HandlesWriteAccess, &id);
if (flags & QScriptClass::HandlesWriteAccess) {
m_scriptClass->setProperty(scriptObject, scriptName, id, engine->scriptValueFromJSCValue(value));
return;
}
QScriptObjectDelegate::put(object, exec, propertyName, value, slot);
}
bool ClassObjectDelegate::deleteProperty(QScriptObject* object, JSC::ExecState *exec,
const JSC::Identifier &propertyName)
{
// ### avoid duplication of put()
QScriptEnginePrivate *engine = scriptEngineFromExec(exec);
QScriptValue scriptObject = engine->scriptValueFromJSCValue(object);
QString name = qtStringFromJSCUString(propertyName.ustring());
QScriptString scriptName = QScriptEnginePrivate::get(engine)->toStringHandle(name);
uint id = 0;
QScriptClass::QueryFlags flags = m_scriptClass->queryProperty(
scriptObject, scriptName, QScriptClass::HandlesWriteAccess, &id);
if (flags & QScriptClass::HandlesWriteAccess) {
if (m_scriptClass->propertyFlags(scriptObject, scriptName, id) & QScriptValue::Undeletable)
return false;
m_scriptClass->setProperty(scriptObject, scriptName, id, QScriptValue());
return true;
}
return QScriptObjectDelegate::deleteProperty(object, exec, propertyName);
}
bool ClassObjectDelegate::getPropertyAttributes(const QScriptObject* object, JSC::ExecState *exec,
const JSC::Identifier &propertyName,
unsigned &attribs) const
{
QScriptEnginePrivate *engine = scriptEngineFromExec(exec);
QScriptValue scriptObject = engine->scriptValueFromJSCValue(object);
QString name = qtStringFromJSCUString(propertyName.ustring());
QScriptString scriptName = QScriptEnginePrivate::get(engine)->toStringHandle(name);
uint id = 0;
QScriptClass::QueryFlags flags = m_scriptClass->queryProperty(
scriptObject, scriptName, QScriptClass::HandlesReadAccess, &id);
if (flags & QScriptClass::HandlesReadAccess) {
QScriptValue::PropertyFlags flags = m_scriptClass->propertyFlags(scriptObject, scriptName, id);
attribs = 0;
if (flags & QScriptValue::ReadOnly)
attribs |= JSC::ReadOnly;
if (flags & QScriptValue::SkipInEnumeration)
attribs |= JSC::DontEnum;
if (flags & QScriptValue::Undeletable)
attribs |= JSC::DontDelete;
if (flags & QScriptValue::PropertyGetter)
attribs |= JSC::Getter;
if (flags & QScriptValue::PropertySetter)
attribs |= JSC::Setter;
attribs |= flags & QScriptValue::UserRange;
return true;
}
return QScriptObjectDelegate::getPropertyAttributes(object, exec, propertyName, attribs);
}
void ClassObjectDelegate::getPropertyNames(QScriptObject* object, JSC::ExecState *exec,
JSC::PropertyNameArray &propertyNames)
{
QScriptEnginePrivate *engine = scriptEngineFromExec(exec);
QScriptValue scriptObject = engine->scriptValueFromJSCValue(object);
QScriptClassPropertyIterator *it = m_scriptClass->newIterator(scriptObject);
if (it != 0) {
while (it->hasNext()) {
it->next();
QString name = it->name().toString();
propertyNames.add(JSC::Identifier(exec, qtStringToJSCUString(name)));
}
delete it;
}
QScriptObjectDelegate::getPropertyNames(object, exec, propertyNames);
}
JSC::CallType ClassObjectDelegate::getCallData(QScriptObject*, JSC::CallData &callData)
{
if (!m_scriptClass->supportsExtension(QScriptClass::Callable))
return JSC::CallTypeNone;
callData.native.function = call;
return JSC::CallTypeHost;
}
JSC::JSValue JSC_HOST_CALL ClassObjectDelegate::call(JSC::ExecState *exec, JSC::JSObject *callee,
JSC::JSValue thisValue, const JSC::ArgList &args)
{
if (!callee->isObject(&QScriptObject::info))
return JSC::throwError(exec, JSC::TypeError, "callee is not a ClassObject object");
QScriptObject *obj = static_cast<QScriptObject*>(callee);
QScriptObjectDelegate *delegate = obj->delegate();
if (!delegate || (delegate->type() != QScriptObjectDelegate::ClassObject))
return JSC::throwError(exec, JSC::TypeError, "callee is not a ClassObject object");
QScriptClass *scriptClass = static_cast<ClassObjectDelegate*>(delegate)->scriptClass();
QScriptEnginePrivate *eng_p = scriptEngineFromExec(exec);
JSC::ExecState *previousFrame = eng_p->currentFrame;
QScriptContext *ctx = eng_p->contextForFrame(exec);
eng_p->currentFrame = exec;
QScriptValue scriptObject = eng_p->scriptValueFromJSCValue(obj);
QVariant result = scriptClass->extension(QScriptClass::Callable, qVariantFromValue(ctx));
eng_p->currentFrame = previousFrame;
eng_p->releaseContextForFrame(exec);
return eng_p->jscValueFromVariant(result);
}
JSC::ConstructType ClassObjectDelegate::getConstructData(QScriptObject*, JSC::ConstructData &constructData)
{
if (!m_scriptClass->supportsExtension(QScriptClass::Callable))
return JSC::ConstructTypeNone;
constructData.native.function = construct;
return JSC::ConstructTypeHost;
}
JSC::JSObject* ClassObjectDelegate::construct(JSC::ExecState *exec, JSC::JSObject *callee,
const JSC::ArgList &args)
{
Q_ASSERT(callee->isObject(&QScriptObject::info));
QScriptObject *obj = static_cast<QScriptObject*>(callee);
QScriptObjectDelegate *delegate = obj->delegate();
QScriptClass *scriptClass = static_cast<ClassObjectDelegate*>(delegate)->scriptClass();
QScriptEnginePrivate *eng_p = scriptEngineFromExec(exec);
JSC::ExecState *previousFrame = eng_p->currentFrame;
QScriptContext *ctx = eng_p->contextForFrame(exec);
eng_p->currentFrame = exec;
QScriptValue defaultObject = ctx->thisObject();
QScriptValue result = qvariant_cast<QScriptValue>(scriptClass->extension(QScriptClass::Callable, qVariantFromValue(ctx)));
if (!result.isObject())
result = defaultObject;
eng_p->currentFrame = previousFrame;
eng_p->releaseContextForFrame(exec);
return JSC::asObject(eng_p->scriptValueToJSCValue(result));
}
bool ClassObjectDelegate::hasInstance(QScriptObject* object, JSC::ExecState *exec,
JSC::JSValue value, JSC::JSValue proto)
{
if (!scriptClass()->supportsExtension(QScriptClass::HasInstance))
return QScriptObjectDelegate::hasInstance(object, exec, value, proto);
QScriptValueList args;
QScriptEnginePrivate *eng_p = scriptEngineFromExec(exec);
args << eng_p->scriptValueFromJSCValue(object) << eng_p->scriptValueFromJSCValue(value);
QVariant result = scriptClass()->extension(QScriptClass::HasInstance, qVariantFromValue(args));
return result.toBool();
}
} // namespace QScript
QT_END_NAMESPACE
#endif // QT_NO_SCRIPT
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