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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
#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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