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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms and
** conditions see http://www.qt.io/terms-conditions. For further information
** use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "jsexpander.h"
#include "corejsextensions.h"
#include <utils/macroexpander.h>
#include <utils/qtcassert.h>
#include <QCoreApplication>
#include <QDebug>
#include <QJSEngine>
namespace Core {
namespace Internal {
class JsExpanderPrivate {
public:
QJSEngine m_engine;
};
} // namespace Internal
static Internal::JsExpanderPrivate *d;
void JsExpander::registerQObjectForJs(const QString &name, QObject *obj)
{
QJSValue jsObj = d->m_engine.newQObject(obj);
d->m_engine.globalObject().setProperty(name, jsObj);
}
QString JsExpander::evaluate(const QString &expression, QString *errorMessage)
{
QJSValue value = d->m_engine.evaluate(expression);
if (value.isError()) {
const QString msg = QCoreApplication::translate("Core::JsExpander", "Error in \"%1\": %2")
.arg(expression, value.toString());
if (errorMessage)
*errorMessage = msg;
return QString();
}
// Try to convert to bool, be that an int or whatever.
if (value.isBool())
return value.toString();
if (value.isNumber())
return QString::number(value.toNumber());
if (value.isString())
return value.toString();
QString msg = QCoreApplication::translate("Core::JsExpander",
"Cannot convert result of \"%1\" to string.").arg(expression);
if (errorMessage)
*errorMessage = msg;
return QString();
}
JsExpander::JsExpander()
{
d = new Internal::JsExpanderPrivate;
Utils::globalMacroExpander()->registerPrefix("JS",
QCoreApplication::translate("Core::JsExpander",
"Evaluate simple JavaScript statements.<br>"
"The statements may not contain '{' nor '}' characters."),
[this](QString in) -> QString {
QString errorMessage;
QString result = JsExpander::evaluate(in, &errorMessage);
if (!errorMessage.isEmpty()) {
qWarning() << errorMessage;
return errorMessage;
} else {
return result;
}
});
registerQObjectForJs(QLatin1String("Util"), new Internal::UtilsJsExtension);
}
JsExpander::~JsExpander()
{
delete d;
d = 0;
}
} // namespace Core
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