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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt 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 "qdaytimeduration_p.h"
#include "qfocus_p.h"
QT_BEGIN_NAMESPACE
using namespace QPatternist;
Focus::Focus(const DynamicContext::Ptr &prevContext) : DelegatingDynamicContext(prevContext),
m_contextSizeCached(-1)
{
Q_ASSERT(prevContext);
Q_ASSERT(prevContext != this);
}
xsInteger Focus::contextPosition() const
{
Q_ASSERT(m_focusIterator);
return m_focusIterator->position();
}
Item Focus::contextItem() const
{
Q_ASSERT(m_focusIterator);
return m_focusIterator->current();
}
xsInteger Focus::contextSize()
{
Q_ASSERT(m_focusIterator);
if(m_contextSizeCached == -1)
m_contextSizeCached = m_focusIterator->copy()->count();
Q_ASSERT_X(m_contextSizeCached == m_focusIterator->copy()->count(), Q_FUNC_INFO,
"If our cache is not the same as the real count, something is wrong.");
return m_contextSizeCached;
}
void Focus::setFocusIterator(const Item::Iterator::Ptr &it)
{
Q_ASSERT(it);
m_focusIterator = it;
}
Item::Iterator::Ptr Focus::focusIterator() const
{
return m_focusIterator;
}
Item Focus::currentItem() const
{
/* In the case that there is no top level expression that creates a focus,
* fn:current() should return the focus. This logic achieves this.
* Effectively we traverse up our "context stack" through recursion, and
* start returning when we've found the top most focus. */
const Item current(m_prevContext->currentItem());
if(current.isNull())
return m_focusIterator->current();
else
return current;
}
QT_END_NAMESPACE
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