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/**************************************************************************
**
** Copyright (C) 2012-2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Installer Framework.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 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, 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.
**
** 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.
**
**
** $QT_END_LICENSE$
**
**************************************************************************/
#ifndef RANGE_H
#define RANGE_H
#include <algorithm>
template <typename T>
class Range {
public:
static Range<T> fromStartAndEnd( const T& start, const T& end ) {
Range<T> r;
r.m_start = start;
r.m_end = end;
return r;
}
static Range<T> fromStartAndLength( const T& start, const T& length ) {
Range<T> r;
r.m_start = start;
r.m_end = start + length;
return r;
}
Range() : m_start( 0 ), m_end( 0 ) {}
T start() const { return m_start; }
T end() const { return m_end; }
void move( const T& by ) {
m_start += by;
m_end += by;
}
Range<T> moved( const T& by ) const {
Range<T> b = *this;
b.move( by );
return b;
}
T length() const { return m_end - m_start; }
Range<T> normalized() const {
Range<T> r2( *this );
if ( r2.m_start > r2.m_end )
std::swap( r2.m_start, r2.m_end );
return r2;
}
bool operator==( const Range<T>& other ) const {
return m_start == other.m_start && m_end && other.m_end;
}
bool operator<( const Range<T>& other ) const {
if ( m_start != other.m_start )
return m_start < other.m_start;
return m_end < other.m_end;
}
private:
T m_start;
T m_end;
};
#endif /* RANGE_H_ */
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