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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://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#include "config.h"
#include "qscriptstring.h"
#include "qscriptstring_p.h"
QT_BEGIN_NAMESPACE
namespace QScript
{
QString qtStringFromJSCUString(const JSC::UString &str);
}
/*!
\since 4.4
\class QScriptString
\brief The QScriptString class acts as a handle to "interned" strings in a QScriptEngine.
\ingroup script
\mainclass
QScriptString can be used to achieve faster (repeated)
property getting/setting, and comparison of property names, of
script objects.
To get a QScriptString representation of a string, pass the string
to QScriptEngine::toStringHandle(). The typical usage pattern is to
register one or more pre-defined strings when setting up your script
environment, then subsequently use the relevant QScriptString as
argument to e.g. QScriptValue::property().
Call the toString() function to obtain the string that a
QScriptString represents.
*/
/*!
\internal
*/
QScriptStringPrivate::QScriptStringPrivate()
{
ref = 0;
}
/*!
\internal
*/
QScriptStringPrivate::~QScriptStringPrivate()
{
}
/*!
\internal
*/
void QScriptStringPrivate::init(QScriptString &q, QScriptEngine *engine, const JSC::Identifier &value)
{
Q_ASSERT(!q.isValid());
q.d_ptr = new QScriptStringPrivate();
q.d_ptr->identifier = value;
q.d_ptr->engine = engine;
q.d_ptr->ref.ref();
}
/*!
Constructs an invalid QScriptString.
*/
QScriptString::QScriptString()
: d_ptr(0)
{
}
/*!
Constructs a new QScriptString that is a copy of \a other.
*/
QScriptString::QScriptString(const QScriptString &other)
: d_ptr(other.d_ptr)
{
if (d_ptr)
d_ptr->ref.ref();
}
/*!
Destroys this QScriptString.
*/
QScriptString::~QScriptString()
{
if (d_ptr && !d_ptr->ref.deref()) {
delete d_ptr;
d_ptr = 0;
}
}
/*!
Assigns the \a other value to this QScriptString.
*/
QScriptString &QScriptString::operator=(const QScriptString &other)
{
if (d_ptr == other.d_ptr)
return *this;
if (d_ptr && !d_ptr->ref.deref()) {
delete d_ptr;
}
d_ptr = other.d_ptr;
if (d_ptr)
d_ptr->ref.ref();
return *this;
}
/*!
Returns true if this QScriptString is valid; otherwise
returns false.
*/
bool QScriptString::isValid() const
{
Q_D(const QScriptString);
return (d && d->engine);
}
/*!
Returns true if this QScriptString is equal to \a other;
otherwise returns false.
*/
bool QScriptString::operator==(const QScriptString &other) const
{
Q_D(const QScriptString);
if (d == other.d_func())
return true;
if (!d || !other.d_func())
return false;
if (d->engine != other.d_func()->engine)
return false;
if (!d->engine)
return true;
return d->identifier == other.d_func()->identifier;
}
/*!
Returns true if this QScriptString is not equal to \a other;
otherwise returns false.
*/
bool QScriptString::operator!=(const QScriptString &other) const
{
return !operator==(other);
}
/*!
Returns the string that this QScriptString represents, or a
null string if this QScriptString is not valid.
\sa isValid()
*/
QString QScriptString::toString() const
{
Q_D(const QScriptString);
if (!d || !d->engine)
return QString();
return QScript::qtStringFromJSCUString(d->identifier.ustring());
}
/*!
Returns the string that this QScriptString represents, or a
null string if this QScriptString is not valid.
\sa toString()
*/
QScriptString::operator QString() const
{
return toString();
}
QT_END_NAMESPACE
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