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
177
178
179
180
181
182
183
|
/****************************************************************************
**
** 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://www.qtsoftware.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_PatternPlatform_H
#define Patternist_PatternPlatform_H
#include <QFlags>
#include <QRegExp>
#include "qfunctioncall_p.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
namespace QPatternist
{
/**
* @short Contains functionality for functions and expressions that
* uses regular expressions.
*
* @ingroup Patternist_utils
* @author Frans Englich <fenglich@trolltech.com>
*/
class PatternPlatform : public FunctionCall
{
public:
/**
* @see <a href="http://www.w3.org/TR/xpath-functions/#flags">XQuery 1.0 and
* XPath 2.0 Functions and Operators, 7.6.1.1 Flags</a>
*/
enum Flag
{
/**
* No flags are set. Default behavior is used.
*/
NoFlags = 0,
/**
* Flag @c s
*/
DotAllMode = 1,
/**
* Flag @c m
*/
MultiLineMode = 2,
/**
* Flag @c i
*/
CaseInsensitive = 4,
/**
* Flag @c x
*/
SimplifyWhitespace = 8
};
typedef QFlags<Flag> Flags;
virtual Expression::Ptr compress(const StaticContext::Ptr &context);
/**
* Retrieves the pattern supplied in the arguments, taking care of compiling it,
* settings its flags, and everything else required for getting it ready to use. If an error
* occurs, an appropriate error is raised via @p context.
*/
const QRegExp pattern(const DynamicContext::Ptr &context) const;
/**
* @returns the number of captures, also called parenthesized sub-expressions, the pattern has.
*
* If the pattern isn't precompiled, -1 is returned.
*/
inline int captureCount() const;
protected:
/**
* @short This constructor is protected, because this class is supposed to be sub-classed.
*
* @param flagsPosition an index position specifying the operand containing the pattern
* flags.
*/
PatternPlatform(const qint8 flagsPosition);
private:
/**
* Enum telling whether the flags, pattern, or both
* have been compiled at compile time.
*/
enum PreCompiledPart
{
NoPart = 0,
PatternPrecompiled = 1,
FlagsPrecompiled = 2,
FlagsAndPattern = PatternPrecompiled | FlagsPrecompiled
};
typedef QFlags<PreCompiledPart> PreCompiledParts;
Q_DISABLE_COPY(PatternPlatform)
Flags parseFlags(const QString &flags,
const DynamicContext::Ptr &context) const;
QRegExp parsePattern(const QString &pattern,
const DynamicContext::Ptr &context) const;
static void applyFlags(const Flags flags, QRegExp &pattern);
/**
* The parts that have been pre-compiled at compile time.
*/
PreCompiledParts m_compiledParts;
Flags m_flags;
QRegExp m_pattern;
const qint8 m_flagsPosition;
};
inline int PatternPlatform::captureCount() const
{
if(m_compiledParts.testFlag(PatternPrecompiled))
return m_pattern.numCaptures();
else
return -1;
}
Q_DECLARE_OPERATORS_FOR_FLAGS(PatternPlatform::Flags)
}
QT_END_NAMESPACE
QT_END_HEADER
#endif
|
