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
|
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** 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 1.1, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
//
// 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_ArithmeticExpression_H
#define Patternist_ArithmeticExpression_H
#include "qatomicmathematician_p.h"
#include "qpaircontainer_p.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
namespace QPatternist
{
/**
* @short Implements arithmetics, such as multiplication and substraction.
*
*
* Optimizations: there's some operator/value combos that are no ops. For
* instance, 0 + <value>, which is the case of unary plus. We can't compile
* those away early due to that type checks needs to be done but one can
* check for them in compress().
*
* @see <a href="http://www.w3.org/TR/xpath20/#id-arithmetic">XML Path Language
* (XPath) 2.0, 3.4 Arithmetic Expressions</a>
* @author Frans Englich <frans.englich@nokia.com>
* @ingroup Patternist_expressions
*/
class Q_AUTOTEST_EXPORT ArithmeticExpression : public PairContainer
{
public:
ArithmeticExpression(const Expression::Ptr &operand1,
const AtomicMathematician::Operator op,
const Expression::Ptr &operand2);
virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;
virtual SequenceType::Ptr staticType() const;
virtual SequenceType::List expectedOperandTypes() const;
AtomicMathematician::Operator operatorID() const;
virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context,
const SequenceType::Ptr &reqType);
static Item flexiblyCalculate(const Item &op1,
const AtomicMathematician::Operator op,
const Item &op2,
const AtomicMathematician::Ptr &mather,
const DynamicContext::Ptr &context,
const SourceLocationReflection *const reflection,
const ReportContext::ErrorCode code = ReportContext::XPTY0004,
const bool isCompat = false);
static AtomicMathematician::Ptr
fetchMathematician(Expression::Ptr &t1,
Expression::Ptr &t2,
const AtomicMathematician::Operator op,
const bool issueError,
const ReportContext::Ptr &context,
const SourceLocationReflection *const reflection,
const ReportContext::ErrorCode code = ReportContext::XPTY0004,
const bool isCompat = false);
virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
protected:
private:
const AtomicMathematician::Operator m_op;
AtomicMathematician::Ptr m_mather;
bool m_isCompat;
};
inline AtomicMathematician::Operator ArithmeticExpression::operatorID() const
{
return m_op;
}
}
QT_END_NAMESPACE
QT_END_HEADER
#endif
|
