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#include "qcommonsequencetypes_p.h"

#include "qpatternistlocale_p.h"

#include "qnodebuilder_p.h"

#include "qcommentconstructor_p.h"

QT_BEGIN_NAMESPACE

using namespace QPatternist;

CommentConstructor::CommentConstructor(const Expression::Ptr &op) : SingleContainer(op)

{

}

QString CommentConstructor::evaluateContent(const DynamicContext::Ptr &context) const

{

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

    if(!item)

        return QString();

    const QString content(item.stringValue());

    if(content.contains(QLatin1String("--")))

    {

        context->error(QtXmlPatterns::tr("A comment cannot contain %1")

                       .arg(formatData("--")),

                       ReportContext::XQDY0072, this);

    }

    else if(content.endsWith(QLatin1Char('-')))

    {

        context->error(QtXmlPatterns::tr("A comment cannot end with a %1.")

                       .arg(formatData(QLatin1Char('-'))),

                       ReportContext::XQDY0072, this);

    }

    return content;

}

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

{

    const QString content(evaluateContent(context));

    const NodeBuilder::Ptr nodeBuilder(context->nodeBuilder(QUrl()));

    nodeBuilder->comment(content);

    const QAbstractXmlNodeModel::Ptr nm(nodeBuilder->builtDocument());

    context->addNodeModel(nm);

    return nm->root(QXmlNodeModelIndex());

}

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

{

    const QString content(evaluateContent(context));

    QAbstractXmlReceiver *const receiver = context->outputReceiver();

    receiver->comment(content);

}

SequenceType::Ptr CommentConstructor::staticType() const

{

    return CommonSequenceTypes::ExactlyOneComment;

}

SequenceType::List CommentConstructor::expectedOperandTypes() const

{

    SequenceType::List result;

    result.append(CommonSequenceTypes::ZeroOrOneString);

    return result;

}

Expression::Properties CommentConstructor::properties() const

{

    return DisableElimination | IsNodeConstructor;

}

ExpressionVisitorResult::Ptr

CommentConstructor::accept(const ExpressionVisitor::Ptr &visitor) const

{

    return visitor->visit(this);

}

QT_END_NAMESPACE