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# complete.hxx

    00001 // complete.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, 2007 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_ALGORITHMS_COMPLETE_HXX
    00018 # define VCSN_ALGORITHMS_COMPLETE_HXX
    00019
    00020 # include <vaucanson/algorithms/complete.hh>
    00021 # include <vaucanson/algorithms/realtime.hh>
    00022
    00023 # include <vaucanson/automata/concept/automata_base.hh>
    00024 # include <vaucanson/misc/usual_macros.hh>
    00025
    00026 # include <list>
    00027 # include <set>
    00028
    00029 namespace vcsn {
    00030
    00031   /*--------------.
    00032   | complete_here |
    00033   `--------------*/
    00034
    00035   template <typename A, typename T>
    00036   void
    00037   complete_here(Element<A, T>& work)
    00038   {
    00039     precondition(is_realtime(work));
    00040     TIMER_SCOPED("complete");
    00041     typedef Element<A, T> automaton_t;
    00042     AUTOMATON_TYPES(automaton_t);
    00043     AUTOMATON_FREEMONOID_TYPES(automaton_t);
    00044     hstate_t sink_state;
    00045     bool sink_added = false;
    00046     std::list<hstate_t> dst;
    00047
    00048     for_all_states(s, work)
    00049       for_all_letters(l, work.structure().series().monoid().alphabet())
    00050       {
    00051         dst.clear();
    00052         work.letter_deltac(dst, *s, *l, delta_kind::states());
    00053         if (dst.size() == 0)
    00054         {
    00055           if (not sink_added)
    00056           {
    00057             sink_state = work.add_state();
    00058             sink_added = true;
    00059           }
    00060           work.add_letter_transition(*s, sink_state, *l);
    00061         }
    00062       }
    00063
    00064     if (sink_added)
    00065       for_all_letters(l, work.structure().series().monoid().alphabet())
    00066         work.add_letter_transition(sink_state, sink_state, *l);
    00067   }
    00068
    00069   /*---------.
    00070   | complete |
    00071   `---------*/
    00072
    00073   template <typename A, typename T>
    00074   Element<A, T>
    00075   complete(const Element<A, T>& e)
    00076   {
    00077     Element<A, T> res(e);
    00078     complete_here(res);
    00079     return res;
    00080   }
    00081
    00082   /*------------.
    00083   | is_complete |
    00084   `------------*/
    00085
    00086   template <class A, class T>
    00087   bool
    00088   is_complete(const Element<A, T>& e)
    00089   {
    00090     precondition(is_realtime(e));
    00091     TIMER_SCOPED("is_complete");
    00092     typedef Element<A, T> automaton_t;
    00093     AUTOMATON_TYPES(automaton_t);
    00094     AUTOMATON_FREEMONOID_TYPES(automaton_t);
    00095     const alphabet_t& alpha = e.structure().series().monoid().alphabet();
    00096     for_all_states(i, e)
    00097     {
    00098       std::set<hstate_t> dst;
    00099       for_all_letters(j, alpha)
    00100       {
    00101         dst.clear();
    00102         e.letter_deltac(dst, *i, *j, delta_kind::states());
    00103
    00104         if (dst.size() == 0)
    00105           return false;
    00106       }
    00107     }
    00108     return true;
    00109   }
    00110
    00111 } // vcsn
    00112
    00113 #endif // ! VCSN_ALGORITHMS_COMPLETE_HXX