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authorQt by Nokia <qt-info@nokia.com>2011-04-27 12:05:43 +0200
committeraxis <qt-info@nokia.com>2011-04-27 12:05:43 +0200
commite1b2c9deb5943faae2b29be6a5c006f75bb73f06 (patch)
treefc79e45367c0a8fc71185e9afc33f7503a58653c /src/xmlpatterns/expr/qemptycontainer_p.h
downloadqtxmlpatterns-e1b2c9deb5943faae2b29be6a5c006f75bb73f06.tar.gz
Initial import from the monolithic Qt.
This is the beginning of revision history for this module. If you want to look at revision history older than this, please refer to the Qt Git wiki for how to use Git history grafting. At the time of writing, this wiki is located here: http://qt.gitorious.org/qt/pages/GitIntroductionWithQt If you have already performed the grafting and you don't see any history beyond this commit, try running "git log" with the "--follow" argument. Branched from the monolithic repo, Qt master branch, at commit 896db169ea224deb96c59ce8af800d019de63f12
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+/****************************************************************************
+**
+** 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_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 <frans.englich@nokia.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