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# exp.hh

    00001 // exp.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, 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_ALGEBRA_IMPLEMENTATION_SERIES_RAT_EXP_HH
    00018 # define VCSN_ALGEBRA_IMPLEMENTATION_SERIES_RAT_EXP_HH
    00019
    00020 # include <xercesc/dom/DOM.hpp>
    00021 # include <xercesc/util/XMLString.hpp>
    00022 # include <xercesc/util/PlatformUtils.hpp>
    00023
    00024 # include <vaucanson/algebra/implementation/series/rat/nodes.hh>
    00025 # include <vaucanson/design_pattern/element.hh>
    00026
    00027 namespace vcsn {
    00028
    00029   namespace rat {
    00030
    00032     template<typename LetterT, typename WeightT>
    00033     class exp
    00034     {
    00035     public:
    00036       typedef rat::Node<LetterT, WeightT>                       node_t;
    00037       typedef typename rat::Node<LetterT, WeightT>::type        type;
    00038       typedef rat::Zero<LetterT, WeightT>                       n_zero_t;
    00039       typedef rat::One<LetterT, WeightT>                        n_one_t;
    00040       typedef rat::Sum<LetterT, WeightT>                        n_sum_t;
    00041       typedef rat::Product<LetterT, WeightT>                    n_prod_t;
    00042       typedef rat::Star<LetterT, WeightT>                       n_star_t;
    00043       typedef rat::Constant<LetterT, WeightT>                   n_const_t;
    00044
    00045     public:
    00046       typedef LetterT monoid_elt_value_t;
    00047       typedef WeightT semiring_elt_value_t;
    00048
    00050
    00051       exp();
    00052       exp(node_t* p);
    00053       exp(const node_t* p);
    00054       exp(const exp& other);
    00056
    00058       ~exp();
    00059
    00061
    00062       exp& operator = (const exp& other);
    00063       exp& operator += (const exp& other);
    00064       exp& operator *= (const exp& other);
    00066
    00068       exp& star();
    00069
    00071       exp& swap(exp& otether);
    00072
    00074       void
    00075       accept(ConstNodeVisitor<monoid_elt_value_t, semiring_elt_value_t>& v)
    00076         const;
    00077
    00079       size_t depth() const;
    00080
    00089       size_t star_height() const;
    00090
    00093       size_t length() const;
    00094
    00095         xercesc::DOMElement* xml_tree(xercesc::DOMDocument* doc,
    00096                                       const char* node_name) const;
    00097
    00099
    00100       node_t*           &base();
    00101       node_t* const     &base() const;
    00103
    00105
    00106       bool operator == (const exp& other) const;
    00107       bool operator != (const exp& other) const;
    00108       bool operator < (const exp& other) const;
    00110
    00112       exp clone() const;
    00113
    00115
    00116       static exp one();
    00117       static exp zero();
    00118       static exp constant(const monoid_elt_value_t& l);
    00120
    00122       static bool starable();
    00123
    00124     protected:
    00126       node_t *base_;
    00127     };
    00128
    00129     template<typename M, typename W>
    00130     const exp<M, W> operator*(const exp<M, W>& lhs,
    00131                               const exp<M, W>& rhs);
    00132
    00133     template<typename M, typename W>
    00134     exp<M, W> operator+(const exp<M, W>& lhs,
    00135                         const exp<M, W>& rhs);
    00136
    00137     template<typename M, typename W>
    00138     exp<M, W> operator*(const W& lhs,
    00139                         const exp<M, W>& rhs);
    00140
    00141     template<typename M, typename W>
    00142     exp<M, W> operator*(const exp<M, W>& lhs,
    00143                         const W& rhs);
    00144
    00145     // FIXME: This is an *evil* hack, but without it there is an ambiguity
    00146     // FIXME: in calls to exp * number or number * exp.
    00147
    00148     template<typename M, typename S, typename T>
    00149     exp<M, Element<S, T> >
    00150     operator*(const Element<S, T>& lhs,
    00151               const exp<M, Element<S, T> >& rhs);
    00152
    00153     template<typename M, typename S, typename T>
    00154     exp<M, Element<S, T> >
    00155     operator*(const exp<M, Element<S, T> >& lhs,
    00156               const Element<S, T>& rhs);
    00157
    00158     template<typename M, typename W>
    00159     void swap(vcsn::rat::exp<M, W>& lhs,
    00160               vcsn::rat::exp<M, W>& rhs);
    00161
    00162   } // End of namespace rat.
    00163
    00164 } // End of namespace vcsn.
    00165
    00166 # if !defined VCSN_USE_INTERFACE_ONLY || defined VCSN_USE_LIB
    00167 #  include <vaucanson/algebra/implementation/series/rat/exp.hxx>
    00168 # endif // VCSN_USE_INTERFACE_ONLY
    00169
    00170 #endif // ! VCSN_ALGEBRA_IMPLEMENTATION_SERIES_RAT_EXP_HH