src/lemon/map_bits.h
author alpar
Tue, 09 Nov 2004 17:48:52 +0000
changeset 973 6a6f3ac07b20
parent 921 818510fa3d99
permissions -rw-r--r--
- Add makeSnapshot()/rollBack() functionality
- Remove an unnecessary #include
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/* -*- C++ -*-
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 * src/lemon/map_bits.h - Part of LEMON, a generic C++ optimization library
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 *
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 * Copyright (C) 2004 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
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 * (Egervary Combinatorial Optimization Research Group, EGRES).
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 *
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 * Permission to use, modify and distribute this software is granted
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 * provided that this copyright notice appears in all copies. For
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 * precise terms see the accompanying LICENSE file.
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 *
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 * This software is provided "AS IS" with no warranty of any kind,
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 * express or implied, and with no claim as to its suitability for any
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 * purpose.
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 *
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 */
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#ifndef LEMON_MAP_BITS_H
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#define LEMON_MAP_BITS_H
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///\ingroup graphmaps
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///\file
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///\brief Some utils to help implement maps.
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namespace lemon {
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  /// \addtogroup graphmaps
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  /// @{
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  /// Helper class to get information about the key type.
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  template <typename Graph, typename KeyIt>
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  struct KeyInfo {};
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  template <typename Graph>
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  struct KeyInfo<Graph, typename Graph::NodeIt> {
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    static int maxId(const Graph& graph) {
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      return graph.maxNodeId();
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    }
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    static int id(const Graph& graph, const typename Graph::Node& node) {
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      return graph.id(node);
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    }
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  };
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  template <typename Graph>
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  struct KeyInfo<Graph, typename Graph::EdgeIt> {
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    static int maxId(const Graph& graph) {
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      return graph.maxEdgeId();
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    }
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    static int id(const Graph& graph, const typename Graph::Edge& edge) {
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      return graph.id(edge);
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    }
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  };
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  template <typename Graph>
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  struct KeyInfo<Graph, typename Graph::SymEdgeIt> {
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    static int maxId(const Graph& graph) {
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      return graph.maxSymEdgeId();
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    }
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    static int id(const Graph& graph, const typename Graph::SymEdge& edge) {
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      return graph.id(edge);
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    }
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  };
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  /// @}
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}
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#endif