/****************************************************************************
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** Copyright (C) 2012 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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****************************************************************************/

#include "qcommonsequencetypes_p.h"

#include "qtemplateparameterreference_p.h"

QT_BEGIN_NAMESPACE

using namespace QPatternist;

TemplateParameterReference::TemplateParameterReference(const VariableDeclaration *varDecl) : m_varDecl(varDecl)
{
}

bool TemplateParameterReference::evaluateEBV(const DynamicContext::Ptr &context) const
{
    return context->templateParameterStore()[m_varDecl->name]->evaluateEBV(context);
}

Item TemplateParameterReference::evaluateSingleton(const DynamicContext::Ptr &context) const
{
    return context->templateParameterStore()[m_varDecl->name]->evaluateSingleton(context);
}

Item::Iterator::Ptr TemplateParameterReference::evaluateSequence(const DynamicContext::Ptr &context) const
{
    Q_ASSERT(!m_varDecl->name.isNull());
    Q_ASSERT(context->templateParameterStore()[m_varDecl->name]);
    return context->templateParameterStore()[m_varDecl->name]->evaluateSequence(context);
}

ExpressionVisitorResult::Ptr TemplateParameterReference::accept(const ExpressionVisitor::Ptr &visitor) const
{
    return visitor->visit(this);
}

Expression::Properties TemplateParameterReference::properties() const
{
    return DisableElimination;
}

SequenceType::Ptr TemplateParameterReference::staticType() const
{
    /* We can't use m_varDecl->expression()'s static type here, because
     * it's the default argument. */
    if(!m_varDecl->sequenceType)
        return CommonSequenceTypes::ZeroOrMoreItems;
    else
        return m_varDecl->sequenceType;
}

QT_END_NAMESPACE