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# gen_book.hxx

    00001 // gen_book.hxx: 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, 2006 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_TOOLS_GEN_BOOK_HXX
    00018 # define VCSN_TOOLS_GEN_BOOK_HXX
    00019
    00020 # include <vaucanson/tools/gen_book.hh>
    00021 # include <vaucanson/misc/usual_macros.hh>
    00022 # include <vaucanson/automata/concept/handlers.hh>
    00023 namespace vcsn {
    00024
    00025   namespace tools {
    00026
    00027     template <class Auto_>
    00028     Auto_       lombardy(unsigned size)
    00029     {
    00030       AUTOMATON_TYPES(Auto_);
    00031       AUTOMATON_FREEMONOID_TYPES(Auto_);
    00032       // FIXME:add assert "we want automaton on char."
    00033       alphabets_elt_t   alpha;
    00034       alpha.insert('a');
    00035       alpha.insert('b');
    00036       monoid_t          monoid (alpha);
    00037       semiring_t        semiring;
    00038       series_set_t      series (semiring, monoid);
    00039       automaton_t       automaton;
    00040       automaton.create();
    00041       automaton.series() = series;
    00042       hstate_t          initial = automaton.add_state();
    00043       hstate_t          c       = initial;
    00044
    00045       for (unsigned i = 0; i < size; ++i)
    00046       {
    00047         hstate_t        next = automaton.add_state();
    00048         automaton.add_letter_transition(c, c, 'a');
    00049         automaton.add_letter_transition(c, next, 'b');
    00050         automaton.set_initial(c);
    00051         c = next;
    00052       }
    00053       automaton.set_final(c);
    00054       automaton.set_initial(c);
    00055       automaton.add_letter_transition(c, initial, 'a');
    00056       return automaton;
    00057     }
    00058
    00059   } // tools
    00060
    00061 } // vcsn
    00062
    00063 #endif // ! VCSN_TOOLS_GEN_BOOK_HXX