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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qcommonsequencetypes_p.h"
#include "qgenericsequencetype_p.h"
#include "qitemmappingiterator_p.h"
#include "qquantifiedexpression_p.h"
QT_BEGIN_NAMESPACE
using namespace QPatternist;
QuantifiedExpression::QuantifiedExpression(const VariableSlotID varSlot,
const Operator quantifier,
const Expression::Ptr &inClause,
const Expression::Ptr &testExpression)
: PairContainer(inClause, testExpression),
m_varSlot(varSlot),
m_quantifier(quantifier)
{
Q_ASSERT(quantifier == Some || quantifier == Every);
}
Item QuantifiedExpression::mapToItem(const Item &item,
const DynamicContext::Ptr &context) const
{
context->setRangeVariable(m_varSlot, item);
return item;
}
bool QuantifiedExpression::evaluateEBV(const DynamicContext::Ptr &context) const
{
const Item::Iterator::Ptr it(makeItemMappingIterator<Item>(ConstPtr(this),
m_operand1->evaluateSequence(context),
context));
Item item(it->next());
if(m_quantifier == Some)
{
while(item)
{
if(m_operand2->evaluateEBV(context))
return true;
else
item = it->next();
};
return false;
}
else
{
Q_ASSERT(m_quantifier == Every);
while(item)
{
if(m_operand2->evaluateEBV(context))
item = it->next();
else
return false;
}
return true;
}
}
QString QuantifiedExpression::displayName(const Operator quantifier)
{
if(quantifier == Some)
return QLatin1String("some");
else
{
Q_ASSERT(quantifier == Every);
return QLatin1String("every");
}
}
SequenceType::Ptr QuantifiedExpression::staticType() const
{
return CommonSequenceTypes::ExactlyOneBoolean;
}
SequenceType::List QuantifiedExpression::expectedOperandTypes() const
{
SequenceType::List result;
result.append(CommonSequenceTypes::ZeroOrMoreItems);
result.append(CommonSequenceTypes::EBV);
return result;
}
QuantifiedExpression::Operator QuantifiedExpression::operatorID() const
{
return m_quantifier;
}
ExpressionVisitorResult::Ptr QuantifiedExpression::accept(const ExpressionVisitor::Ptr &visitor) const
{
return visitor->visit(this);
}
QT_END_NAMESPACE
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