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#include "qtemplateinvoker_p.h"

QT_BEGIN_NAMESPACE

using namespace QPatternist;

TemplateInvoker::TemplateInvoker(const WithParam::Hash &withParams,

                                 const QXmlName &name) : CallSite(name)

                                                       , m_withParams(withParams)

{

    const WithParam::Hash::const_iterator end(m_withParams.constEnd());

    for(WithParam::Hash::const_iterator it(m_withParams.constBegin()); it != end; ++it)

    {

        /* In the case of for instance:

         *  <xsl:with-param name="empty_seq" as="item()"/>

         *

         * we have no default expression. */

        Q_ASSERT(it.value()->sourceExpression());

        m_operands.append(it.value()->sourceExpression());

    }

}

Expression::Ptr TemplateInvoker::compress(const StaticContext::Ptr &context)

{

    /* CallSite::compress() may have changed our children, so update

     * our m_withParams. */

    const Expression::Ptr me(CallSite::compress(context));

    const WithParam::Hash::const_iterator end(m_withParams.constEnd());

    int exprIndex = -1;

    for(WithParam::Hash::const_iterator it(m_withParams.constBegin()); it != end; ++it)

    {

        if(it.value()->sourceExpression())

        {

            ++exprIndex;

            it.value()->setSourceExpression(m_operands.at(exprIndex));

        }

    }

    return me;

}

SequenceType::List TemplateInvoker::expectedOperandTypes() const

{

    SequenceType::List result;

    /* We don't return the type of the m_template->templateParameters(), we

     * return the type of the @c xsl:with-param first. @em After that, we

     * manually apply the parameter types in typeCheck(). */

    const WithParam::Hash::const_iterator end(m_withParams.constEnd());

    for(WithParam::Hash::const_iterator it(m_withParams.constBegin()); it != end; ++it)

    {

        /* We're not guaranteed to have a with-param, we may be using the

         * default value of the xsl:param. Tunnel parameters may also play

         * in. */

        result.append(it.value()->type());

    }

    return result;

}

QT_END_NAMESPACE