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author | Lars Knoll <lars.knoll@nokia.com> | 2009-03-23 09:18:55 (GMT) |
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committer | Simon Hausmann <simon.hausmann@nokia.com> | 2009-03-23 09:18:55 (GMT) |
commit | e5fcad302d86d316390c6b0f62759a067313e8a9 (patch) | |
tree | c2afbf6f1066b6ce261f14341cf6d310e5595bc1 /src/xmlpatterns/expr/qemptycontainer_p.h | |
download | Qt-e5fcad302d86d316390c6b0f62759a067313e8a9.zip Qt-e5fcad302d86d316390c6b0f62759a067313e8a9.tar.gz Qt-e5fcad302d86d316390c6b0f62759a067313e8a9.tar.bz2 |
Long live Qt 4.5!
Diffstat (limited to 'src/xmlpatterns/expr/qemptycontainer_p.h')
-rw-r--r-- | src/xmlpatterns/expr/qemptycontainer_p.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/src/xmlpatterns/expr/qemptycontainer_p.h b/src/xmlpatterns/expr/qemptycontainer_p.h new file mode 100644 index 0000000..de42e9b --- /dev/null +++ b/src/xmlpatterns/expr/qemptycontainer_p.h @@ -0,0 +1,101 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, 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. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@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_EmptyContainer_H +#define Patternist_EmptyContainer_H + +#include "qexpression_p.h" + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +namespace QPatternist +{ + /** + * @short Base class for expressions that has no operands. + * + * @author Frans Englich <fenglich@trolltech.com> + * @ingroup Patternist_expressions + */ + class Q_AUTOTEST_EXPORT EmptyContainer : public Expression + { + public: + /** + * @returns always an empty list. + */ + virtual Expression::List operands() const; + + /** + * Does nothing, since sub-classes has no operands. Calling + * it makes hence no sense, and it also results in an assert crash. + */ + virtual void setOperands(const Expression::List &); + + protected: + /** + * @returns always @c true + */ + virtual bool compressOperands(const StaticContext::Ptr &context); + + /** + * @returns always an empty list since it has no operands. + */ + virtual SequenceType::List expectedOperandTypes() const; + + }; +} + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif |