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     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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     7 ** This file is part of the QtXmlPatterns module of the Qt Toolkit.

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    40 ****************************************************************************/

    41 

    42 #include "qdeduplicateiterator_p.h"

    43 

    44 QT_BEGIN_NAMESPACE

    45 

    46 using namespace QPatternist;

    47 

    48 DeduplicateIterator::DeduplicateIterator(const Item::List &source) : ListIterator<Item>(source)

    49                                                                    , m_listPos(0)

    50 {

    51     Q_ASSERT(!Item());

    52     Q_ASSERT(!Item().isNode());

    53     Q_ASSERT(!Item().isAtomicValue());

    54 }

    55 

    56 Item DeduplicateIterator::next()

    57 {

    58     if(m_listPos == m_list.count())

    59     {

    60         m_current.reset();

    61         m_position = -1;

    62         return Item();

    63     }

    64 

    65     Item next(m_list.at(m_listPos));

    66 

    67     while(next.asNode().is(m_current.asNode()))

    68     {

    69         ++m_listPos;

    70         if(m_listPos == m_list.count())

    71         {

    72             m_current.reset();

    73             m_position = -1;

    74             return Item();

    75         }

    76         else

    77             next = m_list.at(m_listPos);

    78     }

    79 

    80     ++m_position;

    81     m_current = next;

    82     return next;

    83 }

    84 

    85 xsInteger DeduplicateIterator::count()

    86 {

    87     return QAbstractXmlForwardIterator<Item>::count();

    88 }

    89 

    90 Item::Iterator::Ptr DeduplicateIterator::copy() const

    91 {

    92     return Item::Iterator::Ptr(new DeduplicateIterator(m_list));

    93 }

    94 

    95 QT_END_NAMESPACE