1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** 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 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 http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
//
// 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
|
