modules/up/src/rpsl/gnu/SymID.Set.h
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FUNCTIONS
This source file includes following functions.
- SymIDSet
- SymIDSet
- length
- empty
// This may look like C code, but it is really -*- C++ -*-
/*
Copyright (C) 1988 Free Software Foundation
written by Doug Lea (dl@rocky.oswego.edu)
This file is part of the GNU C++ Library. This library is free
software; you can redistribute it and/or modify it under the terms of
the GNU Library General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your
option) any later version. This library is distributed in the hope
that it will be useful, but WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the GNU Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _SymIDSet_h
#ifdef __GNUG__
#pragma interface
#endif
#define _SymIDSet_h 1
#include "Pix.h"
#include "SymID.defs.h"
class SymIDSet
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{
protected:
int count;
public:
inline virtual ~SymIDSet();
int length() const; // current number of items
int empty() const;
virtual Pix add(SymID item) = 0; // add item; return Pix
virtual void del(SymID item) = 0; // delete item
virtual int contains(SymID item) const; // is item in set?
virtual void clear(); // delete all items
virtual Pix first() const = 0; // Pix of first item or 0
virtual void next(Pix& i) const = 0; // advance to next or 0
virtual SymID& operator () (Pix i) const = 0; // access item at i
virtual int owns(Pix i); // is i a valid Pix ?
virtual Pix seek(SymID item) const; // Pix of item
void operator |= (SymIDSet& b); // add all items in b
void operator -= (SymIDSet& b); // delete items also in b
void operator &= (SymIDSet& b); // delete items not in b
int operator == (const SymIDSet& b) const;
int operator != (const SymIDSet& b) const;
int operator <= (const SymIDSet& b) const;
void error(const char* msg) const;
virtual int OK() = 0; // rep invariant
};
inline SymIDSet::~SymIDSet() {}
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inline int SymIDSet::length() const
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{
return count;
}
inline int SymIDSet::empty() const
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{
return count == 0;
}
#endif