1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2015 The Qt Company Ltd. 4 ** Contact: http://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtXmlPatterns module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see http://www.qt.io/terms-conditions. For further 15 ** information use the contact form at http://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 2.1 or version 3 as published by the Free 20 ** Software Foundation and appearing in the file LICENSE.LGPLv21 and 21 ** LICENSE.LGPLv3 included in the packaging of this file. Please review the 22 ** following information to ensure the GNU Lesser General Public License 23 ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and 24 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. 25 ** 26 ** As a special exception, The Qt Company gives you certain additional 27 ** rights. These rights are described in The Qt Company LGPL Exception 28 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. 29 ** 30 ** GNU General Public License Usage 31 ** Alternatively, this file may be used under the terms of the GNU 32 ** General Public License version 3.0 as published by the Free Software 33 ** Foundation and appearing in the file LICENSE.GPL included in the 34 ** packaging of this file. Please review the following information to 35 ** ensure the GNU General Public License version 3.0 requirements will be 36 ** met: http://www.gnu.org/copyleft/gpl.html. 37 ** 38 ** $QT_END_LICENSE$ 39 ** 40 ****************************************************************************/ 41 42 // 43 // W A R N I N G 44 // ------------- 45 // 46 // This file is not part of the Qt API. It exists purely as an 47 // implementation detail. This header file may change from version to 48 // version without notice, or even be removed. 49 // 50 // We mean it. 51 52 #ifndef Patternist_RangeVariableReference_H 53 #define Patternist_RangeVariableReference_H 54 55 #include "qvariablereference_p.h" 56 57 QT_BEGIN_HEADER 58 59 QT_BEGIN_NAMESPACE 60 61 namespace QPatternist 62 { 63 /** 64 * @short A reference to a variable declared with @c for or a quantification 65 * expression, but not for instance a @c let binding. 66 * 67 * A range variable always represents a single item, while an other 68 * expression provides the binding and iteration. A @c for expression is 69 * a good example. 70 * 71 * @author Frans Englich <frans.englich@nokia.com> 72 * @ingroup Patternist_expressions 73 */ 74 class RangeVariableReference : public VariableReference 75 { 76 public: 77 RangeVariableReference(const Expression::Ptr &sourceExpression, 78 const VariableSlotID slot); 79 80 virtual bool evaluateEBV(const DynamicContext::Ptr &context) const; 81 virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const; 82 virtual SequenceType::Ptr staticType() const; 83 84 /** 85 * @returns IDRangeVariableReference 86 */ 87 virtual ID id() const; 88 89 virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const; 90 virtual Properties properties() const; 91 private: 92 const Expression::Ptr m_sourceExpression; 93 }; 94 } 95 96 QT_END_NAMESPACE 97 98 QT_END_HEADER 99 100 #endif 101