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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 "qcommonvalues_p.h"
#include "qcommonsequencetypes_p.h"
#include "qemptysequencetype_p.h"
#include "qemptysequence_p.h"
QT_BEGIN_NAMESPACE
using namespace QPatternist;
Expression::Ptr EmptySequence::create(const Expression *const replacementFor,
const StaticContext::Ptr &context)
{
Q_ASSERT(replacementFor);
Q_ASSERT(context);
const Expression::Ptr retval(new EmptySequence());
context->wrapExpressionWith(replacementFor, retval);
return retval;
}
Item::Iterator::Ptr EmptySequence::evaluateSequence(const DynamicContext::Ptr &) const
{
return CommonValues::emptyIterator;
}
Item EmptySequence::evaluateSingleton(const DynamicContext::Ptr &) const
{
return Item();
}
void EmptySequence::evaluateToSequenceReceiver(const DynamicContext::Ptr &) const
{
}
ItemType::Ptr EmptySequence::type() const
{
return CommonSequenceTypes::Empty;
}
SequenceType::Ptr EmptySequence::staticType() const
{
return CommonSequenceTypes::Empty;
}
bool EmptySequence::evaluateEBV(const DynamicContext::Ptr &) const
{
return false;
}
QString EmptySequence::stringValue() const
{
return QString();
}
ExpressionVisitorResult::Ptr EmptySequence::accept(const ExpressionVisitor::Ptr &visitor) const
{
return visitor->visit(this);
}
Expression::ID EmptySequence::id() const
{
return IDEmptySequence;
}
Expression::Properties EmptySequence::properties() const
{
return IsEvaluated;
}
QT_END_NAMESPACE
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