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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qitemmappingiterator_p.h"
#include "qsequencemappingiterator_p.h"
#include "qargumentconverter_p.h"
QT_BEGIN_NAMESPACE
using namespace QPatternist;
ArgumentConverter::ArgumentConverter(const Expression::Ptr &operand,
const ItemType::Ptr &reqType) : UntypedAtomicConverter(operand, reqType)
{
}
ExpressionVisitorResult::Ptr ArgumentConverter::accept(const ExpressionVisitor::Ptr &visitor) const
{
return visitor->visit(this);
}
Item::Iterator::Ptr ArgumentConverter::mapToSequence(const Item &item,
const DynamicContext::Ptr &context) const
{
if(item.isAtomicValue() && !BuiltinTypes::xsUntypedAtomic->xdtTypeMatches(item.type()))
return makeSingletonIterator(item);
else
{
/* We're using UntypedAtomicConverter::mapToItem(). */
return makeItemMappingIterator<Item>(ConstPtr(this),
item.sequencedTypedValue(),
context);
}
}
Item::Iterator::Ptr ArgumentConverter::evaluateSequence(const DynamicContext::Ptr &context) const
{
return makeSequenceMappingIterator<Item>(ConstPtr(this),
m_operand->evaluateSequence(context),
context);
}
Item ArgumentConverter::evaluateSingleton(const DynamicContext::Ptr &context) const
{
const Item item(m_operand->evaluateSingleton(context));
if(item)
return mapToItem(item, context);
else /* Empty is allowed. ArgumentConverter doesn't care about cardinality. */
return Item();
}
SequenceType::List ArgumentConverter::expectedOperandTypes() const
{
SequenceType::List result;
result.append(CommonSequenceTypes::ZeroOrMoreItems);
return result;
}
SequenceType::Ptr ArgumentConverter::staticType() const
{
return CommonSequenceTypes::ZeroOrMoreAtomicTypes;
}
QT_END_NAMESPACE
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