size.hh

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// This file is part of Awali.
// Copyright 2016-2022 Sylvain Lombardy, Victor Marsault, Jacques Sakarovitch
//
// Awali is a 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 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
 
#ifndef AWALI_CORE_RAT_SIZE_HH
# define AWALI_CORE_RAT_SIZE_HH
 
#include <awali/sttc/core/rat/visitor.hh>
#include <awali/sttc/misc/attributes.hh>
#include <awali/sttc/misc/cast.hh>
 
namespace awali { namespace sttc
{
  namespace rat
  {
    template <typename RatExpSet>
    class size
      : public RatExpSet::const_visitor
    {
    public:
      using ratexpset_t = RatExpSet;
      using context_t = context_t_of<ratexpset_t>;
      using weight_t = typename context_t::weightset_t::value_t;
      using super_type = typename ratexpset_t::const_visitor;
      using node_t = typename super_type::node_t;
      using inner_t = typename super_type::inner_t;
      template <type_t Type>
      using unary_t = typename super_type::template unary_t<Type>;
      template <type_t Type>
      using variadic_t = typename super_type::template variadic_t<Type>;
      using leaf_t = typename super_type::leaf_t;
 
      size_t
      operator()(const node_t& v)
      {
        size_ = 0;
        v.accept(*this);
        return size_;
      }
 
      size_t
      operator()(const std::shared_ptr<const node_t>& v)
      {
        return operator()(*v);
      }
 
    private:
 
# define DEFINE(Type)                                           \
      using Type ## _t = typename super_type::Type ## _t;       \
      virtual void visit(const Type ## _t& v) override
 
      DEFINE(atom);
      DEFINE(complement)   { visit_unary(v); }
      DEFINE(conjunction)  { visit_variadic(v); }
      DEFINE(ldiv)         { visit_variadic(v); }
      DEFINE(lweight);
      DEFINE(one);
      DEFINE(prod)         { visit_variadic(v); };
      DEFINE(rweight);
      DEFINE(shuffle)      { visit_variadic(v); };
      DEFINE(star)         { visit_unary(v); }
      DEFINE(sum)          { visit_variadic(v); };
      DEFINE(transposition){ visit_unary(v); }
      DEFINE(zero);
 
# undef DEFINE
 
      template <rat::exp::type_t Type>
      void visit_unary(const unary_t<Type>& n);
 
      template <rat::exp::type_t Type>
      void visit_variadic(const variadic_t<Type>& n);
 
      size_t size_;
    };
  } // namespace rat
}}//end of ns awali::stc
 
#include <awali/sttc/core/rat/size.hxx>
 
#endif // !AWALI_CORE_RAT_SIZE_HH