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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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
#ifndef PATTERNIST_VARIABLELOADER_P_H
#define PATTERNIST_VARIABLELOADER_P_H
#include <QtCore/QSet>
#include <QtXmlPatterns/QXmlQuery>
#include <QtDebug>
#include "qdynamiccontext_p.h"
#include "qexternalvariableloader_p.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
namespace QPatternist
{
class VariableLoader : public ExternalVariableLoader
{
public:
typedef QHash<QXmlName, QVariant> BindingHash;
typedef QExplicitlySharedDataPointer<VariableLoader> Ptr;
inline VariableLoader(const NamePool::Ptr &np,
const VariableLoader::Ptr &previousLoader = VariableLoader::Ptr()) : m_namePool(np)
, m_previousLoader(previousLoader)
{
}
virtual QPatternist::SequenceType::Ptr announceExternalVariable(const QXmlName name,
const QPatternist::SequenceType::Ptr &declaredType);
virtual QPatternist::Item::Iterator::Ptr evaluateSequence(const QXmlName name,
const QPatternist::DynamicContext::Ptr &);
virtual QPatternist::Item evaluateSingleton(const QXmlName name,
const QPatternist::DynamicContext::Ptr &);
void removeBinding(const QXmlName &name);
bool hasBinding(const QXmlName &name) const;
QVariant valueFor(const QXmlName &name) const;
void addBinding(const QXmlName &name,
const QVariant &value);
bool isSameType(const QVariant &v1,
const QVariant &v2) const;
bool invalidationRequired(const QXmlName &name,
const QVariant &variant) const;
private:
inline QPatternist::Item itemForName(const QXmlName &name) const;
const NamePool::Ptr m_namePool;
VariableLoader::Ptr m_previousLoader;
BindingHash m_bindingHash;
};
}
QT_END_NAMESPACE
Q_DECLARE_METATYPE(QIODevice *)
Q_DECLARE_METATYPE(QXmlQuery)
QT_END_HEADER
#endif
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