|
1 /**************************************************************************** |
|
2 ** |
|
3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
|
4 ** All rights reserved. |
|
5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
|
6 ** |
|
7 ** This file is part of the QtXmlPatterns module of the Qt Toolkit. |
|
8 ** |
|
9 ** $QT_BEGIN_LICENSE:LGPL$ |
|
10 ** No Commercial Usage |
|
11 ** This file contains pre-release code and may not be distributed. |
|
12 ** You may use this file in accordance with the terms and conditions |
|
13 ** contained in the Technology Preview License Agreement accompanying |
|
14 ** this package. |
|
15 ** |
|
16 ** GNU Lesser General Public License Usage |
|
17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
|
18 ** General Public License version 2.1 as published by the Free Software |
|
19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
|
20 ** packaging of this file. Please review the following information to |
|
21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
|
22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
|
23 ** |
|
24 ** In addition, as a special exception, Nokia gives you certain additional |
|
25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
|
26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
|
27 ** |
|
28 ** If you have questions regarding the use of this file, please contact |
|
29 ** Nokia at qt-info@nokia.com. |
|
30 ** |
|
31 ** |
|
32 ** |
|
33 ** |
|
34 ** |
|
35 ** |
|
36 ** |
|
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_VariableReference_H |
|
53 #define Patternist_VariableReference_H |
|
54 |
|
55 #include "qemptycontainer_p.h" |
|
56 |
|
57 QT_BEGIN_HEADER |
|
58 |
|
59 QT_BEGIN_NAMESPACE |
|
60 |
|
61 template<typename T> class QList; |
|
62 |
|
63 namespace QPatternist |
|
64 { |
|
65 /** |
|
66 * @short Baseclass for classes being references to variables. |
|
67 * |
|
68 * @author Frans Englich <frans.englich@nokia.com> |
|
69 * @ingroup Patternist_expressions |
|
70 */ |
|
71 class VariableReference : public EmptyContainer |
|
72 { |
|
73 public: |
|
74 typedef QExplicitlySharedDataPointer<VariableReference> Ptr; |
|
75 typedef QList<VariableReference::Ptr> List; |
|
76 |
|
77 /** |
|
78 * Creates a VariableReference. |
|
79 * |
|
80 * @param slot must be a valid slot. That is, zero or larger. |
|
81 */ |
|
82 VariableReference(const VariableSlotID slot); |
|
83 |
|
84 /** |
|
85 * @returns the slot that this reference communicates through. |
|
86 * |
|
87 * This is a slot in the DynamicContext. Which one, depends on the |
|
88 * type, which this VariableReference does not have information about. |
|
89 * For instance, it could DynamicContext::expressionVariable() or |
|
90 * DynamicContext::rangeVariable(). |
|
91 */ |
|
92 inline VariableSlotID slot() const; |
|
93 |
|
94 /** |
|
95 * @returns DisableElimination |
|
96 */ |
|
97 virtual Properties properties() const; |
|
98 |
|
99 private: |
|
100 /** |
|
101 * The slot. Same as returned by slot(). |
|
102 * |
|
103 * This variable is not called m_slot, because that creates a weird |
|
104 * compiler error on hpuxi-acc. See the preprocessor output. EvaluationCache::m_varSlot |
|
105 * is a similar workaround. |
|
106 */ |
|
107 const VariableSlotID m_varSlot; |
|
108 }; |
|
109 |
|
110 inline VariableSlotID VariableReference::slot() const |
|
111 { |
|
112 return m_varSlot; |
|
113 } |
|
114 |
|
115 } |
|
116 |
|
117 QT_END_NAMESPACE |
|
118 |
|
119 QT_END_HEADER |
|
120 |
|
121 #endif |