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

#include "qqnameconstructor_p.h"

#include "qelementavailablefn_p.h"

QT_BEGIN_NAMESPACE

using namespace QPatternist;

ElementAvailableFN::ElementAvailableFN() : m_xsltInstructions(allXSLTInstructions())

{

}

QSet<QString> ElementAvailableFN::allXSLTInstructions()

{

    enum

    {

        StringSetSize = 27

    };

    QSet<QString> retval;

    retval.reserve(StringSetSize);

    /* Alphabetically. */

    retval.insert(QLatin1String("analyze-string"));

    retval.insert(QLatin1String("apply-imports"));

    retval.insert(QLatin1String("apply-templates"));

    retval.insert(QLatin1String("attribute"));

    retval.insert(QLatin1String("attribute-set"));

    retval.insert(QLatin1String("call-template"));

    retval.insert(QLatin1String("character-map"));

    retval.insert(QLatin1String("choose"));

    retval.insert(QLatin1String("comment"));

    retval.insert(QLatin1String("copy"));

    retval.insert(QLatin1String("copy-of"));

    retval.insert(QLatin1String("document"));

    retval.insert(QLatin1String("element"));

    retval.insert(QLatin1String("fallback"));

    retval.insert(QLatin1String("for-each"));

    retval.insert(QLatin1String("for-each-group"));

    retval.insert(QLatin1String("if"));

    retval.insert(QLatin1String("message"));

    retval.insert(QLatin1String("namespace"));

    retval.insert(QLatin1String("next-match"));

    retval.insert(QLatin1String("number"));

    retval.insert(QLatin1String("perform-sort"));

    retval.insert(QLatin1String("processing-instruction"));

    retval.insert(QLatin1String("result-document"));

    retval.insert(QLatin1String("sequence"));

    retval.insert(QLatin1String("text"));

    retval.insert(QLatin1String("variable"));

    Q_ASSERT(retval.count() == StringSetSize);

    return retval;

}

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

{

    const Item arg(m_operands.first()->evaluateSingleton(context));

    const QString stringName(arg.stringValue());

    const QXmlName elementName(QNameConstructor::expandQName<DynamicContext::Ptr,

                                                             ReportContext::XTDE1440,

                                                             ReportContext::XTDE1440>(stringName,

                                                                                      context,

                                                                                      staticNamespaces(),

                                                                                      this,

                                                                                      false));

    if(elementName.namespaceURI() != StandardNamespaces::xslt)

        return false;

    QString prefix;

    QString localName;

    XPathHelper::splitQName(stringName, prefix, localName);

    return m_xsltInstructions.contains(localName);

}

QT_END_NAMESPACE