/**************************************************************************** | |
** | |
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). | |
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** Contact: Nokia Corporation (qt-info@nokia.com) | |
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** This file is part of the QtXmlPatterns module of the Qt Toolkit. | |
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** $QT_BEGIN_LICENSE:LGPL$ | |
** GNU Lesser General Public License Usage | |
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** License version 2.1 as published by the Free Software Foundation and | |
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** file. Please review the following information to ensure the GNU Lesser | |
** General Public License version 2.1 requirements will be met: | |
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** In addition, as a special exception, Nokia gives you certain additional | |
** rights. These rights are described in the Nokia 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 | |
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** Other Usage | |
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// | |
// 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_Atomizer_H | |
#define Patternist_Atomizer_H | |
#include "qitem_p.h" | |
#include "qsinglecontainer_p.h" | |
QT_BEGIN_HEADER | |
QT_BEGIN_NAMESPACE | |
namespace QPatternist | |
{ | |
/** | |
* @short Performs atomization. Effectively, it is an implementation | |
* of the <tt>fn:data()</tt> function. | |
* | |
* @see <a href="http://www.w3.org/TR/xpath-functions/#func-data">XQuery 1.0 and XPath | |
* 2.0 Functions and Operators, 2.4 fn:data</a> | |
* @see <a href="http://www.w3.org/TR/xpath20/#id-atomization">XML | |
* Path Language (XPath) 2.0, 2.4.2 Atomization</a> | |
* @author Frans Englich <frans.englich@nokia.com> | |
* @ingroup Patternist_expressions | |
*/ | |
class Atomizer : public SingleContainer | |
{ | |
public: | |
Atomizer(const Expression::Ptr &operand); | |
virtual Item evaluateSingleton(const DynamicContext::Ptr &) const; | |
virtual Item::Iterator::Ptr evaluateSequence(const DynamicContext::Ptr &) const; | |
virtual SequenceType::Ptr staticType() const; | |
virtual SequenceType::List expectedOperandTypes() const; | |
virtual const SourceLocationReflection *actualReflection() const; | |
/** | |
* Makes an early compression, by returning the result of | |
* the type checked operand, if the operand has the static type | |
* xs:anyAtomicType(no atomization needed). | |
*/ | |
virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context, | |
const SequenceType::Ptr &reqType); | |
inline Item::Iterator::Ptr mapToSequence(const Item &item, | |
const DynamicContext::Ptr &context) const; | |
virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const; | |
private: | |
typedef QExplicitlySharedDataPointer<const Atomizer> ConstPtr; | |
}; | |
} | |
QT_END_NAMESPACE | |
QT_END_HEADER | |
#endif |