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109 lines
3.8 KiB
109 lines
3.8 KiB
/***************************************************************************
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ksection.h - description
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-------------------
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begin : Sun 22.06.2003
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copyright : (C) 2003 by Friedrich W. H. Kossebau
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email : Friedrich.W.H@Kossebau.de
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****************************************************************************/
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/***************************************************************************
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License version 2 as published by the Free Software Foundation. *
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* *
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***************************************************************************/
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#ifndef KHE_KSECTION_H
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#define KHE_KSECTION_H
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#include "krange.h"
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namespace KHE
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{
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/** describes a section of indizes
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*@author Friedrich W. H. Kossebau
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*/
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class KSection : public KRange<int>
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{
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public:
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/** constructs a section
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* @param SI starting index
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* @param EI end index
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*/
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KSection( int SI, int EI );
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/** constructs a section
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* @param SI starting index
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* @param W width of the section
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*/
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KSection( int SI, int W, bool );
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KSection();
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~KSection();
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public:
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KSection &operator=( const KSection &S );
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public:
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bool operator==( const KSection &S ) const;
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public:
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void setByWidth( int S, int Width );
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/** sets the first index of the section's range one behind the other's end
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* If one of both is invalid the behaviour is undefined
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*/
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void setStartBehind( KSection S );
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/** sets the first index of the section's range one behind the other's end
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* If one of both is invalid or the other' start is 0 the behaviour is undefined
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*/
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void setEndBefore( KSection S );
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/** sets the first index of the section's range to be width-1 before the end
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* If the section is invalid the behaviour is undefined
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*/
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void setStartByWidth( int Width );
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/** sets the last index of the section's range to be width-1 behind the start
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* If the section is invalid the behaviour is undefined
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*/
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void setEndByWidth( int Width );
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/** moves the range defined by a new start.
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* If the range is invalid the behaviour is undefined
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*/
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void moveToStart( int S );
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/** moves the range defined by a new start.
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* If the range is invalid the behaviour is undefined
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*/
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void moveToEnd( int E );
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public:
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/**
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* @return the numbered of included indizes or 0, if the section is invalid
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*/
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int width() const;
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};
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inline KSection::KSection( int SI, int EI ) : KRange<int>(SI,EI) {}
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inline KSection::KSection( int SI, int W, bool ) : KRange<int>(SI,SI+W-1) {}
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inline KSection::KSection() {}
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inline KSection::~KSection() {}
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inline bool KSection::operator==( const KSection &S ) const { return KRange<int>::operator==(S); }
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inline KSection &KSection::operator=( const KSection &S ) { KRange<int>::operator=(S); return *this; }
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inline int KSection::width() const { return isValid() ? end()-start()+1 : 0; }
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inline void KSection::setByWidth( int S, int Width ) { setStart( S ); setEnd( S+Width-1 ); }
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inline void KSection::setStartByWidth( int Width ) { setStart( end()-Width+1 ); }
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inline void KSection::setEndByWidth( int Width ) { setEnd( start()+Width-1 ); }
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inline void KSection::setStartBehind( KSection S ) { setStart( S.end()+1 ); }
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inline void KSection::setEndBefore( KSection S ) { setEnd( S.start()-1 ); }
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inline void KSection::moveToStart( int S ) { setEnd( S+width()-1 ); setStart( S ); }
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inline void KSection::moveToEnd( int E ) { setStart( E-width()+1 ); setEnd( E ); }
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}
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#endif
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