/usr/include/CGAL/Handle.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.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 | // Copyright (c) 1999
// 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) : Sylvain Pion
#ifndef CGAL_HANDLE_H
#define CGAL_HANDLE_H
#include <cstddef>
#include <CGAL/Handle_for.h>
#include <CGAL/assertions.h>
namespace CGAL {
class Rep
{
friend class Handle;
protected:
Rep() { count = 1; }
virtual ~Rep() {}
int count;
};
class Handle
{
public:
typedef std::ptrdiff_t Id_type ;
Handle()
: PTR(static_cast<Rep*>(0)) {}
Handle(const Handle& x)
{
CGAL_precondition( x.PTR != static_cast<Rep*>(0) );
PTR = x.PTR;
PTR->count++;
}
~Handle()
{
if ( PTR && (--PTR->count == 0))
delete PTR;
}
Handle&
operator=(const Handle& x)
{
CGAL_precondition( x.PTR != static_cast<Rep*>(0) );
x.PTR->count++;
if ( PTR && (--PTR->count == 0))
delete PTR;
PTR = x.PTR;
return *this;
}
int
refs() const { return PTR->count; }
Id_type id() const { return PTR - static_cast<Rep*>(0); }
bool identical(const Handle& h) const { return PTR == h.PTR; }
protected:
Rep* PTR;
};
//inline Handle::Id_type id(const Handle& x) { return x.id() ; }
inline bool identical(const Handle &h1, const Handle &h2) { return h1.identical(h2); }
} //namespace CGAL
#endif // CGAL_HANDLE_H
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