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**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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

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** this package.

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

#include "qcommonsequencetypes_p.h"

#include "qgenericsequencetype_p.h"

#include "qitemmappingiterator_p.h"

#include "qpatternistlocale_p.h"

#include "qitemverifier_p.h"

QT_BEGIN_NAMESPACE

using namespace QPatternist;

ItemVerifier::ItemVerifier(const Expression::Ptr &operand,

                           const ItemType::Ptr &reqType,

                           const ReportContext::ErrorCode errorCode) : SingleContainer(operand),

                                                                       m_reqType(reqType),

                                                                       m_errorCode(errorCode)

{

    Q_ASSERT(reqType);

}

void ItemVerifier::verifyItem(const Item &item, const DynamicContext::Ptr &context) const

{

    if(m_reqType->itemMatches(item))

        return;

    context->error(QtXmlPatterns::tr("The item %1 did not match the required type %2.")

                                    .arg(formatData(item.stringValue()),

                                         formatType(context->namePool(), m_reqType)),

                   m_errorCode,

                   this);

}

const SourceLocationReflection *ItemVerifier::actualReflection() const

{

    return m_operand->actualReflection();

}

Item ItemVerifier::evaluateSingleton(const DynamicContext::Ptr &context) const

{

    const Item item(m_operand->evaluateSingleton(context));

    if(item)

    {

        verifyItem(item, context);

        return item;

    }

    else

        return Item();

}

Item ItemVerifier::mapToItem(const Item &item, const DynamicContext::Ptr &context) const

{

    verifyItem(item, context);

    return item;

}

Item::Iterator::Ptr ItemVerifier::evaluateSequence(const DynamicContext::Ptr &context) const

{

    return makeItemMappingIterator<Item>(ConstPtr(this),

                                         m_operand->evaluateSequence(context),

                                         context);

}

SequenceType::Ptr ItemVerifier::staticType() const

{

    return makeGenericSequenceType(m_reqType, m_operand->staticType()->cardinality());

}

SequenceType::List ItemVerifier::expectedOperandTypes() const

{

    SequenceType::List result;

    result.append(CommonSequenceTypes::ZeroOrMoreItems);

    return result;

}

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

{

    return visitor->visit(this);

}

QT_END_NAMESPACE