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
|
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
//
// 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_EBVExtractor_H
#define Patternist_EBVExtractor_H
#include "qsinglecontainer_p.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
namespace QPatternist
{
/**
* @short Calculates the Effective Boolean Value of its operand.
*
* EBVExtractor performs functionality wise the same as @c fn:boolean(),
* but does it without the dependencies which FunctionCall requires.
*
* There is code-duplication going on with BooleanFN.
*
* @see BooleanFN
* @author Frans Englich <frans.englich@nokia.com>
* @ingroup Patternist_expressions
*/
class EBVExtractor : public SingleContainer
{
public:
EBVExtractor(const Expression::Ptr &operand);
virtual bool evaluateEBV(const DynamicContext::Ptr &context) const;
virtual SequenceType::List expectedOperandTypes() const;
virtual const SourceLocationReflection *actualReflection() const;
virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context,
const SequenceType::Ptr &reqType);
virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
/**
* @short Returns always @c xs:boolean.
*/
virtual SequenceType::Ptr staticType() const;
template<typename TSubClass, typename ThisType>
static Expression::Ptr typeCheck(const StaticContext::Ptr &context,
const SequenceType::Ptr &reqType,
ThisType *const caller)
{
if(*CommonSequenceTypes::EBV->itemType() == *reqType->itemType())
return caller->operands().first()->typeCheck(context, reqType);
else
return caller->TSubClass::typeCheck(context, reqType);
}
};
}
QT_END_NAMESPACE
QT_END_HEADER
#endif
|
