bmig_graph_impl.hh

// bmig_graph_impl.hh: this file is part of the Vaucanson project.
//
// Vaucanson, a generic library for finite state machines.
//
// Copyright (C) 2007, 2008 The Vaucanson Group.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// The complete GNU General Public Licence Notice can be found as the
// `COPYING' file in the root directory.
//
// The Vaucanson Group consists of people listed in the `AUTHORS' file.
//

#ifndef VCSN_AUTOMATA_IMPLEMENTATION_BMIG_GRAPH_IMPL_HH_
# define VCSN_AUTOMATA_IMPLEMENTATION_BMIG_GRAPH_IMPL_HH_
# include <boost/dynamic_bitset.hpp>
# include <boost/shared_ptr.hpp>

# include <vaucanson/algebra/implementation/series/rat/exp.hh>
# include <vaucanson/automata/implementation/bmig/vgraph_container.hh>
# include <vaucanson/automata/implementation/bmig/bmig_handlers.hh>
# include <vaucanson/automata/implementation/bmig/iterator.hh>
# include <vaucanson/automata/concept/automata_base.hh>
# include <vaucanson/automata/concept/automata.hh>
# include <vaucanson/automata/concept/automata_kind.hh>
# include <vaucanson/automata/implementation/bmig/bmig_support.hh>
# include <vaucanson/automata/concept/transducer_base.hh>
# include <vaucanson/automata/concept/smart_label.hh>
# include <vaucanson/automata/implementation/kind_adapter.hh>
# include <vaucanson/automata/implementation/geometry.hh>
# include <vaucanson/automata/concept/tags.hh>
# include <vaucanson/misc/hash.hh>
# include <vaucanson/automata/implementation/bmig/initial_value.hh>
# include <vaucanson/automata/implementation/bmig/graphcontainer.hh>
# include <vaucanson/automata/implementation/bmig/edge_value.hh>
# include <vaucanson/automata/implementation/bmig/bmig_functors.hh>
# include <vaucanson/automata/implementation/bmig/initial_container.hh>

namespace vcsn
{
  namespace bmig
  {

    // class Graph.
    template <typename Kind, typename WordValue, typename WeightValue,
    typename SeriesValue, typename Letter, typename Tag, typename GeometryCoords>
    class Graph
    {
      public:
        /*
        ** Type definitions
        */

        // self definition.
        typedef Graph<Kind, WordValue, WeightValue,
                SeriesValue, Letter, Tag, GeometryCoords>
                                                        self_t;

        typedef WeightValue                             semiring_elt_value_t;
        typedef WordValue                               monoid_elt_value_t;
        typedef WordValue                               word_value_t;
        typedef SeriesValue                             series_set_elt_value_t;
        typedef Letter                                  letter_t;
        typedef Tag                                     tag_t;

        typedef typename LabelOf<Kind, WordValue, WeightValue,
                SeriesValue, Letter>::ret               label_t;

        //typedef typename SmartLabelContainer<label_t>::hlabel_t
        typedef label_t
                                                        hlabel_t;

        typedef boost::shared_ptr<std::size_t>          state_t;
        // State descriptor.
        //
        typedef handler<state_h, state_t>               hstate_t;

        typedef EdgeValue<state_t, label_t>             edge_data_t;
        //typedef EdgeValue<state_t, hlabel_t>          edge_data_t;

        typedef GraphContainer<state_t, label_t, edge_data_t>   graph_data_t;
        //typedef GraphContainer<state_t, hlabel_t, edge_data_t>        graph_data_t;

        // Transition descriptor.
        //
        // We store a pointer to an EdgeValue to avoid a new index on transitions and
        // get the data more quickly. Actually this is the adresse of an element
        // inserted in the multi_index.
        // We are allowed to do so since Boost::multi_index guaranties that the data
        // inserted will not be reallocated.
        //
        // We may need to try storing an iterator instead of a pointer. We haven't tried yet
        // since its size is higher than a simple pointer.
        typedef typename graph_data_t::iterator
                                                        edges_iterator;
        typedef handler<transition_h, edges_iterator>   htransition_t;
        typedef htransition_t                           hedge_t;

        //The graph stores  edges only, thus we can define this type.
        typedef VGraphContainer<edges_iterator, graph_data_t, htransition_t> edges_t;
        typedef std::vector<state_t>            states_data_t;
        typedef misc::Support<states_data_t>    states_t;

        //FIXME: find a better name than initial_container_t. The word initial
        //is ambiguous since we use it also for final_t
        typedef InitialValue<state_t, series_set_elt_value_t>
                                                          initial_value_t;
        typedef initial_value_t                           final_value_t;
        typedef InitialContainer<initial_value_t, state_t>
                                                          initial_container_t;

        typedef typename initial_container_t::Type        initial_t;
        typedef initial_t                                 final_t;

        typedef misc::Support<initial_container_t>        initial_support_t;
        typedef misc::Support<initial_container_t>        final_support_t;

        typedef GeometryCoords                            geometry_coords_t;

        typedef vcsn::geometry<hstate_t, htransition_t, GeometryCoords>
                                                          geometry_t;

        //Definition of various iterator types for the graph structure.
        typedef typename graph_data_t::iterator           iterator;
        typedef typename graph_data_t::const_iterator     const_iterator;
        typedef iterator                                  transition_iterator;

        typedef typename index_iterator<graph_data_t, src>::type
                                                          src_iterator;
        typedef src_iterator                              src_const_iterator;
        typedef typename index_iterator<graph_data_t, dst>::type
                                                          dst_iterator;
        typedef dst_iterator                              dst_const_iterator;
        typedef std::pair<src_iterator, src_iterator>     src_range;
        typedef std::pair<dst_iterator, dst_iterator>     dst_range;

// FIXME: is it useful?
//      typedef typename index_iterator<graph_data_t, pred>::type
//                                                        pred_iterator;
//      typedef pred_iterator                             pred_const_iterator;
//      typedef std::pair<pred_iterator, pred_iterator>   pred_range;
        typedef typename index_iterator<graph_data_t, succ>::type
                                                          succ_iterator;
        typedef succ_iterator                             succ_const_iterator;
        typedef std::pair<succ_iterator, succ_iterator>   succ_range;

        typedef ::vcsn::bmig::DeltaConstIterator<self_t, hstate_t, src_iterator>
                                                          delta_state_iterator;
        typedef ::vcsn::bmig::DeltaConstIterator<self_t, htransition_t, src_iterator>
                                                          delta_transition_iterator;
        typedef ::vcsn::bmig::DeltaConstIterator<self_t, hstate_t, dst_iterator>
                                                          rdelta_state_iterator;
        typedef ::vcsn::bmig::DeltaConstIterator<self_t, htransition_t, dst_iterator>
                                                          rdelta_transition_iterator;

        Graph ();
        Graph (unsigned int reserve_number_of_state,
               unsigned int reserve_number_edge);
        Graph (const self_t&);
        ~Graph ();

        self_t& operator= (const self_t&);

        // FIXME: add const rettype& versions?

        states_t          states () const;
        edges_t           edges () const;
        initial_support_t initial () const;
        final_support_t   final () const;

        // state manipulations
        bool              has_state (const hstate_t& h) const;
        hstate_t          add_state ();
        hstate_t          get_state (unsigned h) const;
        void              del_state (const hstate_t& h);

        void              set_initial(const hstate_t& s,
                                      const series_set_elt_value_t& v,
                                      const series_set_elt_value_t& z);
        const series_set_elt_value_t&
                          get_initial(const hstate_t&,
                                      const series_set_elt_value_t&) const;
        bool              is_initial(const hstate_t& s,
                                     const series_set_elt_value_t&) const;
        void              clear_initial();

        void              set_final(const hstate_t&,
                                    const series_set_elt_value_t&,
                                    const series_set_elt_value_t&);
        const series_set_elt_value_t&
                          get_final(const hstate_t&,
                                    const series_set_elt_value_t&) const;
        bool              is_final(const hstate_t& s,
                                   const series_set_elt_value_t&) const;
        void              clear_final();


        // edge manipulations
        bool              has_edge (const hedge_t& h) const;
        hedge_t           add_edge (const hstate_t& from,
                                    const hstate_t& to,
                                    const label_t& l);
        void              del_edge (const hedge_t& h);

        hstate_t          src_of (const hedge_t& h) const;
        hstate_t          dst_of (const hedge_t& h) const;

        const label_t&    label_of (const hedge_t& h) const;
        void              update(const hedge_t& h, const label_t& l);

        // check the consistency of an automata
        template <class S>
        bool              exists (const AutomataBase<S>& s) const;

        self_t&           clone () const; // TODO

        tag_t&            tag ();
        const tag_t&      tag () const;
        geometry_t&       geometry ();
        const geometry_t& geometry () const;

        // Helper used in deltai.
        // Gives the htransition held by a boost iterator.
        // Avoid the burden of carrying a reference to the main hash table
        // when we are working on a sub-hash. (this is related to the projection).
        template <typename I>
        htransition_t     get_htransition(const I& i) const;

      /*
      ** delta...
      ** FIXME: nice comments
      */
# define DECLARE_DELTA_FUNCTION(FunName, DeltaKind)                     \
        template <typename OutputIterator, typename Query>              \
        void FunName (OutputIterator res, const hstate_t& from,         \
                      const Query& q, ::vcsn::delta_kind::DeltaKind) const
        DECLARE_DELTA_FUNCTION (delta, states);
        DECLARE_DELTA_FUNCTION (delta, transitions);
        DECLARE_DELTA_FUNCTION (rdelta, states);
        DECLARE_DELTA_FUNCTION (rdelta, transitions);
# undef DECLARE_DELTA_FUNCTION

# define DECLARE_DELTAF_BOOL_FUNCTION(FunName, DeltaKind, IsBool)       \
        template <typename Functor, typename Query>                     \
        void FunName (Functor& f, const hstate_t& from, const Query& q, \
                      ::vcsn::delta_kind::DeltaKind, misc::IsBool ## _t) const
        DECLARE_DELTAF_BOOL_FUNCTION (deltaf, states, true);
        DECLARE_DELTAF_BOOL_FUNCTION (deltaf, states, false);
        DECLARE_DELTAF_BOOL_FUNCTION (deltaf, transitions, true);
        DECLARE_DELTAF_BOOL_FUNCTION (deltaf, transitions, false);
        DECLARE_DELTAF_BOOL_FUNCTION (rdeltaf, states, true);
        DECLARE_DELTAF_BOOL_FUNCTION (rdeltaf, states, false);
        DECLARE_DELTAF_BOOL_FUNCTION (rdeltaf, transitions, true);
        DECLARE_DELTAF_BOOL_FUNCTION (rdeltaf, transitions, false);
# undef DECLARE_DELTAF_BOOL_FUNCTION

# define DECLARE_DELTAF_FUNCTION(FunName)                               \
        template <typename Functor, typename Query, typename DeltaKind> \
        void FunName (Functor& f, const hstate_t& from,                 \
                      const Query& q, ::vcsn::delta_kind::kind<DeltaKind>) const
        DECLARE_DELTAF_FUNCTION (deltaf);
        DECLARE_DELTAF_FUNCTION (rdeltaf);
# undef DECLARE_DELTAF_FUNCTION

        // Retrieve the (src|dst)_range from a given state
        // Used by the delta iterators
# define DECLARE_DELTAI_FUNCTION(DeltaKind)                                     \
        std::pair<DeltaKind##_iterator, DeltaKind##_iterator>                   \
        deltai(const hstate_t& s, DeltaKind##_iterator) const
        DECLARE_DELTAI_FUNCTION(src);
        DECLARE_DELTAI_FUNCTION(dst);
# undef DECLARE_DELTAI_FUNCTION

      private:
        typename graph_data_t::const_iterator
                          find_edge(const state_t&,
                                    const state_t&,
                                    const hlabel_t&) const;

        geometry_t        geometry_;
        graph_data_t      graph_;
        tag_t             tag_;
        final_t           final_;
        initial_t         initial_;

        //NEW ATTRIBUTES
        boost::dynamic_bitset<>  initial_bitset_;
        boost::dynamic_bitset<>  final_bitset_;
        unsigned          number_of_epsilon_;

        // number_of_state_ == 0 => there is no state.
        unsigned          number_of_state_;
        states_data_t     states_;

        SmartLabelContainer<label_t>
                          label_container_;

    }; // End of class Graph

    // FIXME: add some nice comments

# define BMIGRAPH_TPARAM                                                      \
    template <class S, class WordValue, class WeightValue, class SeriesValue, \
              class Letter, class Tag, class GeometryCoords>

# define BMIGRAPH_SERIES                                          \
    Graph<labels_are_series, WordValue, WeightValue, SeriesValue, \
          Letter, Tag, GeometryCoords>

    BMIGRAPH_TPARAM
    ADAPT_ADD_LETTER_TRANSITION_TO_SERIES_LABEL(BMIGRAPH_SERIES);

    BMIGRAPH_TPARAM
    ADAPT_LETTER_OF_TO_SERIES_LABEL(BMIGRAPH_SERIES);

    BMIGRAPH_TPARAM
    ADAPT_WORD_OF_TO_SERIES_LABEL(BMIGRAPH_SERIES);

# undef BMIGRAPH_SERIES
# define BMIGRAPH_LETTERS                                       \
  Graph<labels_are_letters, WordValue, WeightValue, SeriesValue,\
        Letter, Tag, GeometryCoords>

    BMIGRAPH_TPARAM
    ADAPT_WORD_OF_TO_LETTERS_LABEL(BMIGRAPH_LETTERS);

    BMIGRAPH_TPARAM
    ADAPT_SERIE_OF_TO_LETTERS_LABEL(BMIGRAPH_LETTERS);

    BMIGRAPH_TPARAM
    ADAPT_ADD_SERIE_TRANSITION_TO_LETTERS_LABEL(BMIGRAPH_LETTERS);

# undef BMIGRAPH_LETTERS

# define BMIGRAPH                                               \
    Graph<Kind, WordValue, WeightValue, SerieValue, \
          Letter, Tag, GeometryCoords>

    template <class Kind, class WordValue, class WeightValue, class SerieValue,
              class Letter, class Tag, class GeometryCoords, class I>
    Tag& op_tag(const AutomataBase<I>&, BMIGRAPH&);

    template <class Kind, class WordValue, class WeightValue, class SerieValue,
              class Letter, class Tag, class GeometryCoords, class I>
    const Tag& op_tag(const AutomataBase<I>&, BMIGRAPH&);

    template <class Kind, class WordValue, class WeightValue, class SerieValue,
              class Letter, class Tag, class GeometryCoords, class I>
    typename BMIGRAPH::geometry_t&
    op_geometry(const AutomataBase<I>&, BMIGRAPH&);

    template <class Kind, class WordValue, class WeightValue, class SerieValue,
              class Letter, class Tag, class GeometryCoords, class I>
    const typename BMIGRAPH::geometry_t&
    op_geometry(const AutomataBase<I>&, const BMIGRAPH&);

# undef BMIGRAPH
# undef BMIGRAPH_TPARAM

  } // End of namespace bmig

  // This implementation can be used as an implementation of automaton.
  VCSN_MAKE_AUTOMATON_TRAITS(bmig::Graph);
  VCSN_MAKE_GENERALIZED_AUTOMATON_TRAITS(bmig::Graph);
  VCSN_MAKE_MUTE_GRAPH_IMPL_TRAITS(bmig::Graph);
  VCSN_MAKE_MUTE_GRAPH_IMPL_MONOID_TRAITS(bmig::Graph);

  // This implementation can be used as a transducer one.
  template <class Kind,
            class WordValue,
            class WeightValue,
            class SeriesValue,
            class Letter,
            class Tag,
            class GeometryCoords>
  struct transducer_traits<bmig::Graph<Kind,
                                  WordValue,
                                  WeightValue,
                                  SeriesValue,
                                  Letter,
                                  Tag,
                                  GeometryCoords> >
  {
    typedef WordValue               input_monoid_elt_value_t;
    typedef typename algebra::series_traits<WeightValue>::monoid_elt_value_t
                                  output_monoid_elt_value_t;
    typedef typename algebra::series_traits<WeightValue>::semiring_elt_value_t
                                  output_semiring_elt_value_t;
  };

  // Explain how to project type of transducer into input automaton type.
  template <class Kind,
            class WordValue,
            class WeightValue,
            class SeriesValue,
            class Letter,
            class Tag,
            class GeometryCoords>
  struct input_projection_traits<bmig::Graph<Kind,
                                             WordValue,
                                             WeightValue,
                                             SeriesValue,
                                             Letter,
                                             Tag,
                                             GeometryCoords> >
  {
    typedef bmig::Graph<Kind, WordValue, WeightValue, SeriesValue,
                         Letter, Tag, GeometryCoords>
                                  self_t;
    typedef typename transducer_traits<self_t>::output_semiring_elt_value_t
                                  semiring_elt_value_t;
    typedef typename transducer_traits<self_t>::input_monoid_elt_value_t
                                  monoid_elt_value_t;
    typedef typename algebra::mute_series_impl<SeriesValue,
                                                semiring_elt_value_t,
                                                monoid_elt_value_t>::ret
                                  series_set_elt_value_t;

    typedef
    bmig::Graph<Kind,
          monoid_elt_value_t,
          semiring_elt_value_t,
          series_set_elt_value_t,
          Letter,
          Tag,
          GeometryCoords>
                                  ret;
  };

  // Input projection for FMP transducers.
  template <class Kind,
            class WordValue,
            class WeightValue,
            class SeriesValue,
            class Letter,
            class Tag,
            class GeometryCoords>
  struct fmp_input_projection_traits<bmig::Graph<Kind,
                                                 WordValue,
                                                 WeightValue,
                                                 SeriesValue,
                                                 Letter,
                                                 Tag,
                                                 GeometryCoords> >
  {
    typedef bmig::Graph<Kind, WordValue, WeightValue, SeriesValue,
                         Letter, Tag, GeometryCoords>
                                  self_t;

    typedef typename automaton_traits<self_t>::semiring_elt_value_t
                                  semiring_elt_value_t;

    typedef typename WordValue::first_type monoid_elt_value_t;
    typedef typename monoid_elt_value_t::value_type letter_t;

    typedef typename algebra::mute_series_impl<SeriesValue,
                                               semiring_elt_value_t,
                                               monoid_elt_value_t>::ret
                                  series_set_elt_value_t;

    typedef
    bmig::Graph<Kind,
          monoid_elt_value_t,
          semiring_elt_value_t,
          series_set_elt_value_t,
          letter_t,
          Tag,
          GeometryCoords>
                                  ret;
  };

  template <class Kind,
            class WordValue,
            class WeightValue,
            class SeriesValue,
            class Letter,
            class Tag,
            class GeometryCoords>
  struct output_projection_traits<bmig::Graph<Kind,
                                        WordValue,
                                        WeightValue,
                                        SeriesValue,
                                        Letter,
                                        Tag,
                                        GeometryCoords> >
  {
    typedef bmig::Graph<Kind, WordValue, WeightValue, SeriesValue,
                         Letter, Tag, GeometryCoords>
                                  self_t;

    typedef typename automaton_traits<self_t>::semiring_elt_value_t
                                  series_set_elt_value_t;

    typedef typename
    algebra::series_traits<series_set_elt_value_t>::monoid_elt_value_t
                                  monoid_elt_value_t;

    typedef typename
    algebra::series_traits<series_set_elt_value_t>::semiring_elt_value_t
                                  semiring_elt_value_t;

    typedef
    bmig::Graph<Kind,
          monoid_elt_value_t,
          semiring_elt_value_t,
          series_set_elt_value_t,
          Letter,
          Tag,
          GeometryCoords>
                                  ret;
  };

  // Output projection for FMP transducers.
  template <class Kind,
            class WordValue,
            class WeightValue,
            class SeriesValue,
            class Letter,
            class Tag,
            class GeometryCoords>
  struct fmp_output_projection_traits<bmig::Graph<Kind,
                                        WordValue,
                                        WeightValue,
                                        SeriesValue,
                                        Letter,
                                        Tag,
                                        GeometryCoords> >
  {
    typedef bmig::Graph<Kind, WordValue, WeightValue, SeriesValue,
                         Letter, Tag, GeometryCoords>
                                  self_t;

    typedef typename WordValue::second_type monoid_elt_value_t;
    typedef typename monoid_elt_value_t::value_type letter_t;

    typedef typename automaton_traits<self_t>::semiring_elt_value_t
                                  semiring_elt_value_t;

    typedef typename algebra::mute_series_impl<SeriesValue,
            semiring_elt_value_t,
            monoid_elt_value_t>::ret series_set_elt_value_t;

    typedef
    bmig::Graph<Kind,
          monoid_elt_value_t,
          semiring_elt_value_t,
          series_set_elt_value_t,
          letter_t,
          Tag,
          GeometryCoords>
                                  ret;
  };

  // Explain how to extend an input automaton into a transducer.
  template <class Kind,
            class WordValue,
            class WeightValue,
            class SeriesValue,
            class Letter,
            class Tag,
            class GeometryCoords>
  struct extension_traits<bmig::Graph<Kind,
                                WordValue,
                                WeightValue,
                                SeriesValue,
                                Letter,
                                Tag,
                                GeometryCoords> >
  {
    typedef bmig::Graph<Kind, WordValue, WeightValue,
                         SeriesValue, Letter, Tag, GeometryCoords>
                                  self_t;
    typedef typename automaton_traits<self_t>::monoid_elt_value_t
                                  monoid_elt_value_t;
    typedef typename algebra::mute_series_impl<SeriesValue,
                                                SeriesValue,
                                                monoid_elt_value_t>::ret
                                  series_set_elt_value_t;

    typedef
    bmig::Graph<Kind,
          monoid_elt_value_t,
          SeriesValue,
          series_set_elt_value_t,
          Letter,
          Tag,
          GeometryCoords>
                                  ret;
  };
} // End of namespace vcsn

# if !defined VCSN_USE_INTERFACE_ONLY || defined VCSN_USE_LIB
#  include <vaucanson/automata/implementation/bmig_graph_impl.hxx>
# endif // !VCSN_USE_INTERFACE_ONLY || VCSN_USE_LIB

// FIXME __ITERATOR__  put back again later
//# include <vaucanson/automata/implementation/bmig_graph_letters_spec.hh>

#endif // !VCSN_AUTOMATA_IMPLEMENTATION_BMIG_GRAPH_IMPL_HH_ //

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