/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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.
**
** 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.
**
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qbuiltintypes_p.h"
#include "qcommonsequencetypes_p.h"

#include "qemptysequencetype_p.h"

QT_BEGIN_NAMESPACE

using namespace QPatternist;

EmptySequenceType::EmptySequenceType()
{
}

bool EmptySequenceType::xdtTypeMatches(const ItemType::Ptr &other) const
{
    return *other == *this ||
           CommonSequenceTypes::None->xdtTypeMatches(other);
}

bool EmptySequenceType::itemMatches(const Item &) const
{
    return false;
}

QString EmptySequenceType::displayName(const NamePool::Ptr &) const
{
    return QLatin1String("empty-sequence()");
}

ItemType::Ptr EmptySequenceType::xdtSuperType() const
{
    return BuiltinTypes::item;
}

Cardinality EmptySequenceType::cardinality() const
{
    return Cardinality::empty();
}

ItemType::Ptr EmptySequenceType::itemType() const
{
    return ItemType::Ptr(const_cast<EmptySequenceType *>(this));
}

bool EmptySequenceType::isNodeType() const
{
    return false;
}

bool EmptySequenceType::isAtomicType() const
{
    return false;
}

ItemType::Ptr EmptySequenceType::atomizedType() const
{
    return BuiltinTypes::xsAnyAtomicType;
}

QT_END_NAMESPACE