/****************************************************************************

**

** Copyright (C) 2010 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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** No Commercial Usage

** This file contains pre-release code and may not be distributed.

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** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

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** 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

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**

** 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.

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** If you have questions regarding the use of this file, please contact

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** $QT_END_LICENSE$

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****************************************************************************/

#include "qboolean_p.h"

#include "qbuiltintypes_p.h"

#include "qcommonsequencetypes_p.h"

#include "qgenericsequencetype_p.h"

#include "qliteral_p.h"

QT_BEGIN_NAMESPACE

using namespace QPatternist;

Literal::Literal(const Item &i) : m_item(i)

{

    Q_ASSERT(m_item);

    Q_ASSERT(m_item.isAtomicValue());

}

Item Literal::evaluateSingleton(const DynamicContext::Ptr &) const

{

    return m_item;

}

bool Literal::evaluateEBV(const DynamicContext::Ptr &context) const

{

    return Boolean::evaluateEBV(m_item, context);

}

void Literal::evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const

{

    context->outputReceiver()->item(m_item);

}

SequenceType::Ptr Literal::staticType() const

{

    return makeGenericSequenceType(m_item.type(), Cardinality::exactlyOne());

}

ExpressionVisitorResult::Ptr Literal::accept(const ExpressionVisitor::Ptr &visitor) const

{

    return visitor->visit(this);

}

Expression::ID Literal::id() const

{

    Q_ASSERT(m_item);

    Q_ASSERT(m_item.isAtomicValue());

    const ItemType::Ptr t(m_item.type());

    if(BuiltinTypes::xsBoolean->xdtTypeMatches(t))

        return IDBooleanValue;

    else if(BuiltinTypes::xsString->xdtTypeMatches(t) ||

            BuiltinTypes::xsAnyURI->xdtTypeMatches(t) ||

            BuiltinTypes::xsUntypedAtomic->xdtTypeMatches(t))

    {

        return IDStringValue;

    }

    else if(BuiltinTypes::xsInteger->xdtTypeMatches(t))

        return IDIntegerValue;

    else

        return IDFloat;

}

Expression::Properties Literal::properties() const

{

    return IsEvaluated;

}

QString Literal::description() const

{

    return m_item.stringValue();

}

QT_END_NAMESPACE