summaryrefslogtreecommitdiff
path: root/src/xmlpatterns/data/qatomiccaster_p.h
blob: fa1cfdd02cc136aa4db995b0518da984bc22fcef (plain)
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
/****************************************************************************
**
** Copyright (C) 2012 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

//
//  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_AtomicCaster_H
#define Patternist_AtomicCaster_H

#include <private/qdynamiccontext_p.h>
#include <private/qitem_p.h>
#include <private/qatomictypedispatch_p.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternist
{
    /**
     * @short AtomicCaster is an abstract base class for classes
     * that performs casting between two atomic values of specific types.
     *
     * @ingroup Patternist_xdm
     * @author Frans Englich <frans.englich@nokia.com>
     */
    class AtomicCaster : public AtomicTypeVisitorResult
    {
    public:
        typedef QExplicitlySharedDataPointer<AtomicCaster> Ptr;
        AtomicCaster();
        virtual ~AtomicCaster();

        /**
         * Casts @p from to an atomic value of the type this class
         * casts to, and returns that value. The @p context is used
         * for reporting errors in case the casting fails, and to in general
         * access information from the dynamic context.
         */
        virtual Item castFrom(const Item &from,
                              const QExplicitlySharedDataPointer<DynamicContext> &context) const = 0;
    };
}

QT_END_NAMESPACE

QT_END_HEADER

#endif