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
|
/****************************************************************************
**
** 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.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qdistinctiterator_p.h"
QT_BEGIN_NAMESPACE
using namespace QPatternist;
DistinctIterator::DistinctIterator(const Item::Iterator::Ptr &seq,
const AtomicComparator::Ptr &comp,
const Expression::ConstPtr &expression,
const DynamicContext::Ptr &context)
: m_seq(seq)
, m_context(context)
, m_expr(expression)
, m_position(0)
{
Q_ASSERT(seq);
prepareComparison(comp);
}
Item DistinctIterator::next()
{
if(m_position == -1)
return Item();
const Item nitem(m_seq->next());
if(!nitem)
{
m_position = -1;
m_current.reset();
return Item();
}
const Item::List::const_iterator end(m_processed.constEnd());
Item::List::const_iterator it(m_processed.constBegin());
for(; it != end; ++it)
{
if(flexibleCompare(*it, nitem, m_context))
{
return next();
}
}
m_current = nitem;
++m_position;
m_processed.append(nitem);
return nitem;
}
Item DistinctIterator::current() const
{
return m_current;
}
xsInteger DistinctIterator::position() const
{
return m_position;
}
Item::Iterator::Ptr DistinctIterator::copy() const
{
return Item::Iterator::Ptr(new DistinctIterator(m_seq->copy(), comparator(), m_expr, m_context));
}
const SourceLocationReflection *DistinctIterator::actualReflection() const
{
return m_expr.data();
}
QT_END_NAMESPACE
|
