qcurrentfn.cpp

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#include "qcommonsequencetypes_p.h"
#include "qcurrentfn_p.h"

QT_BEGIN_NAMESPACE

using namespace QPatternist;

Item CurrentFN::evaluateSingleton(const DynamicContext::Ptr &context) const
{
    return context->currentItem();
}

Expression::Ptr CurrentFN::compress(const StaticContext::Ptr &context)
{
    m_itemType = context->currentItemType();
    return FunctionCall::compress(context);
}

Expression::Ptr CurrentFN::typeCheck(const StaticContext::Ptr &context,
                                     const SequenceType::Ptr &reqType)
{
    m_itemType = context->currentItemType();
    return FunctionCall::typeCheck(context, reqType);
}

SequenceType::Ptr CurrentFN::staticType() const
{
    if(m_itemType)
        return makeGenericSequenceType(m_itemType, Cardinality::exactlyOne());
    else
        return CommonSequenceTypes::ExactlyOneItem;
}

QT_END_NAMESPACE