/usr/include/CGAL/Circulator_identity.h is in libcgal-dev 4.11-2build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Utrecht University (The Netherlands),
// ETH Zurich (Switzerland),
// INRIA Sophia-Antipolis (France),
// Max-Planck-Institute Saarbruecken (Germany),
// and Tel-Aviv University (Israel). All rights reserved.
//
// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 3 of the License,
// or (at your option) any later version.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL$
// $Id$
//
//
// Author(s) : Michael Hoffmann <hoffmann@inf.ethz.ch>
// Lutz Kettner <kettner@mpi-sb.mpg.de>
// Sylvain Pion
#ifndef CGAL_CIRCULATOR_IDENTITY_H
#define CGAL_CIRCULATOR_IDENTITY_H 1
#include <CGAL/circulator.h>
namespace CGAL {
template < class C,
class Ref = typename C::reference,
class Ptr = typename C::pointer>
class Circulator_identity {
protected:
C nt; // The internal circulator.
public:
typedef C Circulator;
typedef Circulator_identity<C,Ref,Ptr> Self;
typedef typename C::iterator_category iterator_category;
typedef typename C::value_type value_type;
typedef typename C::difference_type difference_type;
typedef typename C::size_type size_type;
typedef typename C::reference reference;
typedef typename C::pointer pointer;
// CREATION
// --------
Circulator_identity() {}
Circulator_identity( Circulator j) : nt(j) {}
// OPERATIONS Forward Category
// ---------------------------
Circulator current_circulator() const { return nt;}
bool operator==( Nullptr_t p) const {
CGAL_assertion( p == 0);
CGAL_USE(p);
return ( nt == 0); //###//
}
bool operator!=( Nullptr_t p) const {
return !(*this == p);
}
bool operator==( const Self& i) const {
return ( nt == i.nt); //###//
}
bool operator!=( const Self& i) const {
return !(*this == i);
}
Ref operator*() const {
return *nt; //###//
}
Ptr operator->() const {
return nt.operator->(); //###//
}
Self& operator++() {
++nt; //###//
return *this;
}
Self operator++(int) {
Self tmp = *this;
++*this;
return tmp;
}
// OPERATIONS Bidirectional Category
// ---------------------------------
Self& operator--() {
--nt; //###//
return *this;
}
Self operator--(int) {
Self tmp = *this;
--*this;
return tmp;
}
// OPERATIONS Random Access Category
// ---------------------------------
Self min_circulator() const {
return Self( nt.min_circulator()); //###//
}
Self& operator+=( difference_type n) {
nt += n; //###//
return *this;
}
Self operator+( difference_type n) const {
Self tmp = *this;
return tmp += n;
}
Self& operator-=( difference_type n) {
return operator+=( -n);
}
Self operator-( difference_type n) const {
Self tmp = *this;
return tmp += -n;
}
difference_type operator-( const Self& i) const {
return nt - i.nt; //###//
}
Ref operator[]( difference_type n) const {
Self tmp = *this;
tmp += n;
return tmp.operator*();
}
};
template < class Dist, class C, class Ref, class Ptr>
inline
Circulator_identity<C,Ref,Ptr>
operator+( Dist n, Circulator_identity<C,Ref,Ptr> i) {
return i += n;
}
} //namespace CGAL
#endif // CGAL_CIRCULATOR_IDENTITY_H //
// EOF //
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