summaryrefslogtreecommitdiff
path: root/src/xmlpatterns/expr/qapplytemplate_p.h
blob: 3e42f33cc06a86683c337d0bf2fbd4611881ef46 (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
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
/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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 Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional
** rights.  These rights are described in the Digia 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

//
//  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_ApplyTemplate_H
#define Patternist_ApplyTemplate_H

#include <private/qtemplatemode_p.h>

QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE

namespace QPatternist
{
    /**
     * @short When combined with other components, implements
     * @c xsl:apply-templates.
     *
     * Note that ApplyTemplate isn't named ApplyTemplates. The reason for this
     * is that ApplyTemplate doesn't do the iteration part. An @c
     * <xsl:apply-templates/> instruction is rewritten into:
     *
     * @code
     * child::node/() map apply-template()
     * @endcode
     *
     * Hence, this expression requires a focus, although it can consist of
     * atomic values.
     *
     * @since 4.5
     * @author Frans Englich <frans.englich@nokia.com>
     * @ingroup Patternist_expressions
     */
    class ApplyTemplate : public TemplateInvoker
    {
    public:
        typedef QExplicitlySharedDataPointer<ApplyTemplate> Ptr;

        /**
         * @short @p mode may be @c null. If it is, ApplyTemplate interprets
         * that as that it should use the #current mode.
         *
         * @see StaticContext::currentTemplateMode()
         */
        ApplyTemplate(const TemplateMode::Ptr &mode,
                      const WithParam::Hash &withParams,
                      const TemplateMode::Ptr &defaultMode);

        virtual Item::Iterator::Ptr evaluateSequence(const DynamicContext::Ptr &context) const;

        virtual SequenceType::Ptr staticType() const;
        virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
        virtual Properties properties() const;

        /**
         * The only reason this function exists, is in order to convert
         * QXmlNodeModelIndex to QPatternist::Item. So, this is a huge
         * performance setback. It applies for one of the builtin templates.
         */
        inline Item mapToItem(const QXmlNodeModelIndex &node,
                              const DynamicContext::Ptr &context) const;
        inline Item::Iterator::Ptr mapToSequence(const Item &item,
                                                 const DynamicContext::Ptr &context) const;

        inline TemplateMode::Ptr mode() const;

        virtual bool configureRecursion(const CallTargetDescription::Ptr &sign);
        virtual Expression::Ptr body() const;
        virtual CallTargetDescription::Ptr callTargetDescription() const;

        Expression::Ptr compress(const StaticContext::Ptr &context);

    private:
        typedef QExplicitlySharedDataPointer<const ApplyTemplate> ConstPtr;

        Template::Ptr findTemplate(const DynamicContext::Ptr &context,
                                   const TemplateMode::Ptr &templateMode) const;
        /**
         * @note You typically want to use effectiveMode().
         */
        const TemplateMode::Ptr m_mode;

        TemplateMode::Ptr m_defaultMode;

        inline TemplateMode::Ptr effectiveMode(const DynamicContext::Ptr &context) const;
    };

    TemplateMode::Ptr ApplyTemplate::mode() const
    {
        return m_mode;
    }
}

QT_END_NAMESPACE
QT_END_HEADER

#endif