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# automata_kind.hh

    00001 // automata_kind.hh: this file is part of the Vaucanson project.
    00002 //
    00003 // Vaucanson, a generic library for finite state machines.
    00004 //
    00005 // Copyright (C) 2001, 2002, 2003, 2004, 2005 The Vaucanson Group.
    00006 //
    00007 // This program is free software; you can redistribute it and/or
    00008 // modify it under the terms of the GNU General Public License
    00009 // as published by the Free Software Foundation; either version 2
    00010 // of the License, or (at your option) any later version.
    00011 //
    00012 // The complete GNU General Public Licence Notice can be found as the
    00013 // `COPYING' file in the root directory.
    00014 //
    00015 // The Vaucanson Group consists of people listed in the `AUTHORS' file.
    00016 //
    00017 #ifndef VCSN_AUTOMATA_CONCEPT_AUTOMATA_KIND_HH
    00018 # define VCSN_AUTOMATA_CONCEPT_AUTOMATA_KIND_HH
    00019
    00020 # include <utility>
    00021
    00022 namespace vcsn {
    00023
    00024   struct labels_are_letters {};
    00025   struct labels_are_words   {};
    00026   struct labels_are_series  {};
    00027   struct labels_are_couples {};
    00028
    00029   template <class Kind,
    00030             class WordValue,
    00031             class WeightValue,
    00032             class SeriesValue,
    00033             class Letter>
    00034   struct LabelOf;
    00035
    00036   template <class WordValue,
    00037             class WeightValue,
    00038             class SeriesValue,
    00039             class Letter>
    00040   struct LabelOf<labels_are_letters, WordValue, WeightValue,
    00041                  SeriesValue, Letter>
    00042   {
    00043     typedef Letter      ret;
    00044   };
    00045
    00046   template <class WordValue,
    00047             class WeightValue,
    00048             class SeriesValue,
    00049             class Letter>
    00050   struct LabelOf<labels_are_series, WordValue, WeightValue,
    00051                  SeriesValue, Letter>
    00052   {
    00053     typedef SeriesValue ret;
    00054   };
    00055
    00056   template <class WordValue,
    00057             class WeightValue,
    00058             class SeriesValue,
    00059             class Letter>
    00060   struct LabelOf<labels_are_couples, WordValue, WeightValue,
    00061                  SeriesValue, Letter>
    00062   {
    00063     typedef std::pair<WeightValue, WordValue>   ret;
    00064   };
    00065
    00066   template <class WordValue,
    00067             class WeightValue,
    00068             class SeriesValue,
    00069             class Letter>
    00070   struct LabelOf<labels_are_words, WordValue, WeightValue,
    00071                  SeriesValue, Letter>
    00072   {
    00073     typedef WordValue   ret;
    00074   };
    00075
    00076 } // vcsn
    00077
    00078 #endif // ! VCSN_AUTOMATA_CONCEPT_AUTOMATA_KIND_HH