1 /****************************************************************************
3 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/
6 ** This file is part of the QtXmlPatterns module of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** GNU Lesser General Public License Usage
10 ** This file may be used under the terms of the GNU Lesser General Public
11 ** License version 2.1 as published by the Free Software Foundation and
12 ** appearing in the file LICENSE.LGPL included in the packaging of this
13 ** file. Please review the following information to ensure the GNU Lesser
14 ** General Public License version 2.1 requirements will be met:
15 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
17 ** In addition, as a special exception, Nokia gives you certain additional
18 ** rights. These rights are described in the Nokia Qt LGPL Exception
19 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
21 ** GNU General Public License Usage
22 ** Alternatively, this file may be used under the terms of the GNU General
23 ** Public License version 3.0 as published by the Free Software Foundation
24 ** and appearing in the file LICENSE.GPL included in the packaging of this
25 ** file. Please review the following information to ensure the GNU General
26 ** Public License version 3.0 requirements will be met:
27 ** http://www.gnu.org/copyleft/gpl.html.
30 ** Alternatively, this file may be used in accordance with the terms and
31 ** conditions contained in a signed written agreement between you and Nokia.
40 ****************************************************************************/
46 // This file is not part of the Qt API. It exists purely as an
47 // implementation detail. This header file may change from version to
48 // version without notice, or even be removed.
52 #ifndef Patternist_InsertionIterator_H
53 #define Patternist_InsertionIterator_H
55 #include <private/qabstractxmlforwarditerator_p.h>
56 #include <private/qitem_p.h>
65 * @short Conceptually inserts one QAbstractXmlForwardIterator into another, make two QAbstractXmlForwardIterator instances appear as one.
67 * An InsertionIterator represents a sequence that is the merge of two
68 * sequences, where one of the iterators is conceptually inserted at a
69 * given position. This is done while retaining the characteristic of being
72 * InsertionIterator contains the logic for the implementation of the <tt>fn:insert-before()</tt>
73 * function, whose definition therefore specifies the detailed behaviors of the
76 * @see <a href="http://www.w3.org/TR/xpath-functions/#func-insert-before">XQuery 1.0
77 * and XPath 2.0 Functions and Operators, 15.1.7 fn:insert-before</a>
78 * @author Frans Englich <frans.englich@nokia.com>
79 * @ingroup Patternist_iterators
81 class InsertionIterator : public Item::Iterator
86 * Creates an InsertionIterator whose result is a merge of the
87 * iterator @p insertIterator into the iterator @p target at position @p
90 * @param target the iterator containing the items that the
91 * item in @p insertIterator will be inserted into.
92 * @param position the insertion position. Must be 1 or larger
93 * @param insertIterator the iterator containing the items to insert
94 * at position @p position
96 InsertionIterator(const Item::Iterator::Ptr &target,
97 const xsInteger position,
98 const Item::Iterator::Ptr &insertIterator);
101 virtual Item current() const;
102 virtual xsInteger position() const;
103 virtual xsInteger count();
104 virtual Item::Iterator::Ptr copy() const;
107 const Item::Iterator::Ptr m_target;
108 const xsInteger m_insertPos;
109 const Item::Iterator::Ptr m_inserts;
111 xsInteger m_position;