54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
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// Copyright (c) 1997-2000 Max-Planck-Institute Saarbruecken (Germany).
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// All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org).
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//
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// $URL: https://github.com/CGAL/cgal/blob/v5.1/Nef_2/include/CGAL/Nef_2/Object_index.h $
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// $Id: Object_index.h 0779373 2020-03-26T13:31:46+01:00 Sébastien Loriot
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// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-Commercial
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//
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//
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// Author(s) : Michael Seel <seel@mpi-sb.mpg.de>
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#ifndef CGAL_NEF_2_OBJECT_INDEX_H
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#define CGAL_NEF_2_OBJECT_INDEX_H
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#include <CGAL/license/Nef_2.h>
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#include <CGAL/basic.h>
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#include <CGAL/Unique_hash_map.h>
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#include <string>
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#include <sstream>
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namespace CGAL {
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template <typename I>
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class Object_index {
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char _prefix;
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CGAL::Unique_hash_map<I,int> _index;
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public:
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Object_index() : _prefix('\0'), _index(-1) {}
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Object_index(I first, I beyond, char c=' ') : _prefix(c), _index(-1)
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{ for(int i=0 ; first!=beyond; ++i,++first) _index[first]=i; }
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int operator[](const I& it) const { return _index[it]; }
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int& operator[](const I& it) { return _index[it]; }
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void index(I first, I beyond, char c=' ')
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{ _prefix=c;
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for(int i=0 ; first!=beyond; ++i,++first) _index[first]=i;
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}
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std::string operator()(const I& it, bool verbose=true) const
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{ if (verbose && _index[it]==-1) return "nil";
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if (verbose && _index[it]==-2) return "end";
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std::ostringstream os;
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if (verbose) os << _prefix;
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os << _index[it];
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return os.str();
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}
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};
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} //namespace CGAL
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#endif //CGAL_NEF_2_OBJECT_INDEX_H
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