/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qcommonsequencetypes_p.h"

#include "qcalltemplate_p.h"

QT_BEGIN_NAMESPACE

using namespace QPatternist;

CallTemplate::CallTemplate(const QXmlName &name,
                           const WithParam::Hash &withParams) : TemplateInvoker(withParams, name)
{
}

Item::Iterator::Ptr CallTemplate::evaluateSequence(const DynamicContext::Ptr &context) const
{
    Q_ASSERT(m_template);
    return m_template->body->evaluateSequence(m_template->createContext(this, context, true));
}

bool CallTemplate::evaluateEBV(const DynamicContext::Ptr &context) const
{
    Q_ASSERT(m_template);
    return m_template->body->evaluateEBV(m_template->createContext(this, context, true));
}

void CallTemplate::evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const
{
    Q_ASSERT(m_template);
    m_template->body->evaluateToSequenceReceiver(m_template->createContext(this, context, true));
}

Expression::Ptr CallTemplate::typeCheck(const StaticContext::Ptr &context,
                                        const SequenceType::Ptr &reqType)
{
    /* Check XTSE0680, that every @c xsl:with-param has a corresponding @c
     * xsl:param declaration. */
    {
        const WithParam::Hash::const_iterator end(m_withParams.constEnd());

        for(WithParam::Hash::const_iterator it(m_withParams.constBegin());
            it != end;
            ++it)
        {
            if(!VariableDeclaration::contains(m_template->templateParameters, it.value()->name()))
                Template::raiseXTSE0680(context, it.value()->name(), this);
        }
    }

    const Expression::Ptr me(TemplateInvoker::typeCheck(context, reqType));

    const VariableDeclaration::List args(m_template->templateParameters);
    const VariableDeclaration::List::const_iterator end(args.constEnd());
    VariableDeclaration::List::const_iterator it(args.constBegin());

    for(; it != end; ++it)
    {
        // TODO
        Q_ASSERT((*it)->sequenceType);
    }

    return me;
}

Expression::Properties CallTemplate::properties() const
{
    Q_ASSERT(!m_template || m_template->body);

    /* We may be called before our m_template is resolved, namely when we're
     * the body of a variable. In that case querytransformparser.ypp will
     * manually call TypeChecker::applyFunctionConversion(), which is before
     * ExpressionFactory::createExpression() has resolved us. */
    if(m_template && !isRecursive())
        return m_template->properties();
    else
        return Properties();
}

Expression::Properties CallTemplate::dependencies() const
{
    if(m_template && !isRecursive())
        return m_template->dependencies();
    else
        return Properties();
}

SequenceType::Ptr CallTemplate::staticType() const
{
    return CommonSequenceTypes::ZeroOrMoreItems;
}

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

bool CallTemplate::configureRecursion(const CallTargetDescription::Ptr &sign)
{
    Q_UNUSED(sign);
    return false;
}

Expression::Ptr CallTemplate::body() const
{
    return m_template->body;
}

CallTargetDescription::Ptr CallTemplate::callTargetDescription() const
{
    return CallTargetDescription::Ptr();
}

QT_END_NAMESPACE