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Diffstat (limited to 'src/xmlpatterns/functions/qnodefns_p.h')
| -rw-r--r-- | src/xmlpatterns/functions/qnodefns_p.h | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/src/xmlpatterns/functions/qnodefns_p.h b/src/xmlpatterns/functions/qnodefns_p.h new file mode 100644 index 0000000..ba8de1e --- /dev/null +++ b/src/xmlpatterns/functions/qnodefns_p.h @@ -0,0 +1,176 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtXmlPatterns 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 Technology Preview License Agreement accompanying +** this package. +** +** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +// +// 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_NodeFNs_H +#define Patternist_NodeFNs_H + +#include "qfunctioncall_p.h" +#include "qcastingplatform_p.h" + +/** + * @file + * @short Contains classes implementing the functions found in + * <a href="http://www.w3.org/TR/xpath-functions/#node-functions">XQuery 1.0 and + * XPath 2.0 Functions and Operators, 14 Functions and Operators on Nodes</a>. + * + * @ingroup Patternist_functions + */ + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +namespace QPatternist +{ + /** + * @short Implements the function <tt>fn:name()</tt>. + * + * @ingroup Patternist_functions + * @author Frans Englich <frans.englich@nokia.com> + */ + class NameFN : public FunctionCall + { + public: + virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const; + }; + + /** + * @short Implements the function <tt>fn:local-name()</tt>. + * + * @ingroup Patternist_functions + * @author Frans Englich <frans.englich@nokia.com> + */ + class LocalNameFN : public FunctionCall + { + public: + virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const; + }; + + /** + * @short Implements the function <tt>fn:namespace-uri()</tt>. + * + * @ingroup Patternist_functions + * @author Frans Englich <frans.englich@nokia.com> + */ + class NamespaceURIFN : public FunctionCall + { + public: + virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const; + }; + + /** + * @short Implements the function <tt>fn:number()</tt>. + * + * NumberFN uses CastingPlatform for performing the actual casting. + * + * @ingroup Patternist_functions + * @author Frans Englich <frans.englich@nokia.com> + */ + class NumberFN : public FunctionCall, + public CastingPlatform<NumberFN, false> + { + public: + virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const; + + /** + * Overridden in order to call CastingPlatform::prepareCasting(). It also + * implements the optimization of rewriting to its operand if its + * type is xs:double(since the <tt>fn:number()</tt> call is in that case superflorous). + */ + virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context, + const SequenceType::Ptr &reqType); + + /** + * @returns always BuiltinTypes::xsDouble. + */ + inline ItemType::Ptr targetType() const + { + return BuiltinTypes::xsDouble; + } + }; + + /** + * @short Implements the function <tt>fn:lang()</tt>. + * + * @ingroup Patternist_functions + * @author Frans Englich <frans.englich@nokia.com> + */ + class LangFN : public FunctionCall + { + public: + virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const; + + private: + static inline bool isLangMatch(const QString &candidate, const QString &toMatch); + }; + + /** + * @short Implements the function <tt>fn:root()</tt>. + * + * @ingroup Patternist_functions + * @author Frans Englich <frans.englich@nokia.com> + */ + class RootFN : public FunctionCall + { + public: + virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const; + /** + * Infers its cardinality from the argument. + */ + virtual SequenceType::Ptr staticType() const; + }; +} + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif |