[Olena-patches] milena r1194: Add graph in mln/util

URL: https://svn.lrde.epita.fr/svn/oln/trunk/milena ChangeLog: 2007-09-28 Guillaume Duhamel &lt;guillaume.duhamel(a)lrde.epita.fr&gt; Add graph in mln/util. * graph.hh: New. --- graph.hh | 182 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 182 insertions(+) Index: trunk/milena/mln/util/graph.hh =================================================================== --- trunk/milena/mln/util/graph.hh (revision 0) +++ trunk/milena/mln/util/graph.hh (revision 1194) @@ -0,0 +1,182 @@ +// Copyright (C) 2007 EPITA Research and Development Laboratory +// +// This file is part of the Olena Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License version 2 as published by the +// Free Software Foundation. +// +// 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 +// General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this library; see the file COPYING. If not, write to +// the Free Software Foundation, 51 Franklin Street, Fifth Floor, +// Boston, MA 02111-1307, USA. +// +// As a special exception, you may use this file as part of a free +// software library without restriction. Specifically, if other files +// instantiate templates or use macros or inline functions from this +// file, or you compile this file and link it with other files to +// produce an executable, this file does not by itself cause the +// resulting executable to be covered by the GNU General Public +// License. +// reasons why the executable file might be covered by the GNU General +// Public License. + +#ifndef MLN_UTIL_GRAPH_HH +# define MLN_UTIL_GRAPH_HH + +# include <mln/core/concept/object.hh> +# include <cstddef> +# include <iostream> +# include <vector> + +/*! \file mln/util/graph.hh + * + * \brief Definition of a graph. + */ + + +namespace mln +{ + namespace util + { + + template<typename T> + struct s_node + { + T data; + std::vector<unsigned> links; + }; + + template<> + struct s_node<void> + { + std::vector<unsigned> links; + }; + + template<typename T> + struct s_edge + { + T data; + unsigned node1; + unsigned node2; + }; + + template<> + struct s_edge <void> + { + unsigned node1; + unsigned node2; + }; + + template<typename N, typename E = void> + struct graph + { + graph (); + + void add_node (void); + void add_edge (unsigned n1, unsigned n2); + void coherence () const; + void print_debug () const; + unsigned nb_node_; + unsigned nb_link_; + std::vector<struct s_node<N>*> nodes_; + std::vector<struct s_edge<E>*> links_; + }; + +# ifndef MLN_INCLUDE_ONLY + + template<typename N, typename E> + graph<N, E>::graph () + : nb_node_ (0), + nb_link_ (0), + nodes_ (0), + links_ (0) + { + } + + template<typename N, typename E> + void + graph<N, E>::add_node (void) + { + struct s_node<N>* n = new struct s_node<N>; + + nodes_.push_back (n); + ++nb_node_; + } + + template<typename N, typename E> + void + graph<N, E>::add_edge (unsigned n1, unsigned n2) + { + mln_precondition(n1 < this->nb_node_); + mln_precondition(n2 < this->nb_node_); + + struct s_edge<E>* edge; + + edge = new struct s_edge<E>; + edge->node1 = n1; + edge->node2 = n2; + links_.push_back (edge); + ++nb_link_; + nodes_[n1]->links.push_back (n2); + nodes_[n2]->links.push_back (n1); + } + + template<typename N, typename E> + void + graph<N, E>::coherence () const + { + mln_precondition(nodes_.size () == this->nb_node_); + mln_precondition(links_.size () == this->nb_link_); + typename std::vector<struct s_node <N>*>::const_iterator it = nodes_.begin (); + for (; it != nodes_.end (); ++it) + { + typename std::vector<unsigned>::const_iterator it2 = (*it)->links.begin (); + for (; it2 != (*it)->links.end (); ++it2) + mln_precondition((*it2) < nb_node_); + } + + typename std::vector<struct s_edge<E>*>::const_iterator it3 = links_.begin (); + for (; it3 != links_.end (); ++it3) + { + mln_precondition((*it3)->node1 < nb_node_); + mln_precondition((*it3)->node2 < nb_node_); + } + } + + template<typename N, typename E> + void + graph<N, E>::print_debug () const + { + std::cout << "nodes :" + << std::endl; + + typename std::vector<struct s_node<N>*>::const_iterator it = nodes_.begin (); + int i = 0; + for (; it != nodes_.end (); ++it, ++i) + { + std::cout << "node number = " + << i + << " nbh : "; + typename std::vector<unsigned>::const_iterator it2 = (*it)->links.begin (); + for (; it2 != (*it)->links.end (); ++it2) + { + std::cout << (*it2) + << " "; + } + std::cout << std::endl; + } + std::cout << std::endl; + } + +# endif // ! MLN_INCLUDE_ONLY + + } // end of util + +} // end of mln + +#endif // MLN_GRAPH_HH