1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the QtXmlPatterns module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 3 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL3 included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 3 requirements
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24**
25** GNU General Public License Usage
26** Alternatively, this file may be used under the terms of the GNU
27** General Public License version 2.0 or (at your option) the GNU General
28** Public license version 3 or any later version approved by the KDE Free
29** Qt Foundation. The licenses are as published by the Free Software
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31** included in the packaging of this file. Please review the following
32** information to ensure the GNU General Public License requirements will
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34** https://www.gnu.org/licenses/gpl-3.0.html.
35**
36** $QT_END_LICENSE$
37**
38****************************************************************************/
39
40//
41// W A R N I N G
42// -------------
43//
44// This file is not part of the Qt API. It exists purely as an
45// implementation detail. This header file may change from version to
46// version without notice, or even be removed.
47//
48// We mean it.
49
50#ifndef Patternist_Atomizer_H
51#define Patternist_Atomizer_H
52
53#include <private/qitem_p.h>
54#include <private/qsinglecontainer_p.h>
55
56QT_BEGIN_NAMESPACE
57
58namespace QPatternist
59{
60
61 /**
62 * @short Performs atomization. Effectively, it is an implementation
63 * of the <tt>fn:data()</tt> function.
64 *
65 * @see <a href="http://www.w3.org/TR/xpath-functions/#func-data">XQuery 1.0 and XPath
66 * 2.0 Functions and Operators, 2.4 fn:data</a>
67 * @see <a href="http://www.w3.org/TR/xpath20/#id-atomization">XML
68 * Path Language (XPath) 2.0, 2.4.2 Atomization</a>
69 * @author Frans Englich <frans.englich@nokia.com>
70 * @ingroup Patternist_expressions
71 */
72 class Atomizer : public SingleContainer
73 {
74 public:
75 Atomizer(const Expression::Ptr &operand);
76
77 virtual Item evaluateSingleton(const DynamicContext::Ptr &) const;
78 virtual Item::Iterator::Ptr evaluateSequence(const DynamicContext::Ptr &) const;
79
80 virtual SequenceType::Ptr staticType() const;
81
82 virtual SequenceType::List expectedOperandTypes() const;
83 virtual const SourceLocationReflection *actualReflection() const;
84
85 /**
86 * Makes an early compression, by returning the result of
87 * the type checked operand, if the operand has the static type
88 * xs:anyAtomicType(no atomization needed).
89 */
90 virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context,
91 const SequenceType::Ptr &reqType);
92
93 inline Item::Iterator::Ptr mapToSequence(const Item &item,
94 const DynamicContext::Ptr &context) const;
95 virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
96
97 private:
98 typedef QExplicitlySharedDataPointer<const Atomizer> ConstPtr;
99 };
100}
101
102QT_END_NAMESPACE
103
104#endif
105

source code of qtxmlpatterns/src/xmlpatterns/janitors/qatomizer_p.h