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Ruta de la carpeta: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\graph\tree_traits.hpp

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//  (C) Copyright Jeremy Siek 1999.
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)

#ifndef BOOST_TREE_STRUCTURE_HPP
#define BOOST_TREE_STRUCTURE_HPP

namespace boost {

  template <class T>
  struct tree_traits {
    typedef typename T::node_descriptor node_descriptor;    
    typedef typename T::children_iterator children_iterator;    
  };


  template <class Tree, class TreeVisitor>
  void traverse_tree(typename tree_traits<Tree>::node_descriptor v,
                     Tree& t, TreeVisitor visitor)
  {
    visitor.preorder(v, t);
    typename tree_traits<Tree>::children_iterator i, end;
    tie(i, end) = children(v, t);
    if (i != end) {
      traverse_tree(*i++, t, visitor);
      visitor.inorder(v, t);
      while (i != end)
        traverse_tree(*i++, t, visitor);
    } else
      visitor.inorder(v, t);
    visitor.postorder(v, t);
  }

  struct null_tree_visitor {
    template <typename Node, typename Tree> void preorder(Node, Tree&) { }
    template <typename Node, typename Tree> void inorder(Node, Tree&) { }
    template <typename Node, typename Tree> void postorder(Node, Tree&) { }
  };

} /* namespace boost */

#endif /* BOOST_TREE_STRUCTURE_HPP */

tree_traits.hpp

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