/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
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** GNU Lesser General Public License Usage
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** License version 2.1 as published by the Free Software Foundation and
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** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** 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
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** file. Please review the following information to ensure the GNU General
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**
****************************************************************************/

#include "qbuiltintypes_p.h"
#include "qcommonsequencetypes_p.h"
#include "qgenericsequencetype_p.h"

#include "qliteralsequence_p.h"

QT_BEGIN_NAMESPACE

using namespace QPatternist;

LiteralSequence::LiteralSequence(const Item::List &list) : m_list(list)
{
    Q_ASSERT(list.size() >= 2);
}

Item::Iterator::Ptr LiteralSequence::evaluateSequence(const DynamicContext::Ptr &) const
{
    return makeListIterator(m_list);
}

SequenceType::Ptr LiteralSequence::staticType() const
{
    const Item::List::const_iterator end(m_list.constEnd());
    Item::List::const_iterator it(m_list.constBegin());

    /* Load the first item. */
    ItemType::Ptr t((*it).type());
    ++it;

    for(; end != it; ++it)
        t |= (*it).type();

    return makeGenericSequenceType(t, Cardinality::fromCount(m_list.size()));
}

ExpressionVisitorResult::Ptr LiteralSequence::accept(const ExpressionVisitor::Ptr &visitor) const
{
    return visitor->visit(this);
}

Expression::ID LiteralSequence::id() const
{
    return IDExpressionSequence;
}

Expression::Properties LiteralSequence::properties() const
{
    return IsEvaluated;
}

QT_END_NAMESPACE