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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 "qtypechecker_p.h"
#include "qtreatas_p.h"
QT_BEGIN_NAMESPACE
using namespace QPatternist;
TreatAs::TreatAs(const Expression::Ptr &operand,
const SequenceType::Ptr &reqType) : SingleContainer(operand),
m_reqType(reqType)
{
Q_ASSERT(reqType);
}
Expression::Ptr TreatAs::typeCheck(const StaticContext::Ptr &context,
const SequenceType::Ptr &reqType)
{
Q_ASSERT(context);
Q_ASSERT(reqType);
/* Apply function conversion with the special error code XPDY0050. After that, we
* let the regular typeCheck() function be invoked on the operand before we rewrite
* to it. Hence is applyFunctionConversion() called twice, which doesn't break anything,
* but indeed is redundant. */
const Expression::Ptr treated(TypeChecker::applyFunctionConversion(m_operand,
m_reqType,
context,
ReportContext::XPDY0050));
return treated->typeCheck(context, reqType);
}
ExpressionVisitorResult::Ptr TreatAs::accept(const ExpressionVisitor::Ptr &visitor) const
{
return visitor->visit(this);
}
SequenceType::Ptr TreatAs::staticType() const
{
return m_reqType;
}
SequenceType::List TreatAs::expectedOperandTypes() const
{
SequenceType::List result;
result.append(CommonSequenceTypes::ZeroOrMoreItems);
return result;
}
QT_END_NAMESPACE
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