abstract_ratexp.hh

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// This file is part of Awali.
// Copyright 2016-2021 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 DYN_CORE_ABSTRACT_RATEXP_HH
#define DYN_CORE_ABSTRACT_RATEXP_HH
 
#include<memory>
#include<vector>
#include<iostream>
#include <awali/dyn/core/any.hh>
#include <awali/dyn/core/context.hh>
#include <awali/dyn/core/typedefs.hh>
 
namespace awali { namespace dyn {
 
//   using label_t = any_t;
//   using weight_t = any_t;
 
  enum class ExpKind {
    
    ZERO, 
    
    ONE, 
 
    ATOM, 
    
    SUM, 
    
    PROD, 
 
    STAR
  };
 
 
  class ratexp_t;
 
  
  class abstract_ratexp_t {
   public:
 
    virtual std::vector<label_t> alphabet() const = 0;
 
    virtual context_t get_context() const = 0;
 
    
    virtual std::ostream& print(std::ostream&) const = 0;
    //virtual std::ostream& json(std::ostream&) const = 0;
 
    /* Multiplies this @ref abstract_ratexp_t by @pname{w} on the left. */
    virtual ratexp_t lmul(weight_t w) const =0;
 
    /* Multiplies this @ref abstract_ratexp_t by @pname{w} on the right. */
    virtual ratexp_t rmul(weight_t w) const =0;
 
 
    virtual ratexp_t add(ratexp_t) const =0;
    virtual ratexp_t mult(ratexp_t) const =0;
    virtual ratexp_t star() const =0;
 
    virtual unsigned arity() const =0;
 
    virtual const std::vector<ratexp_t>& children() const =0;
 
    virtual ExpKind get_kind() const =0;
 
    virtual weight_t lweight() const =0;
 
    virtual weight_t rweight() const =0;
 
    virtual label_t value() const =0;
 
    virtual unsigned size() const =0;
    virtual unsigned length() const =0;
    virtual unsigned height() const =0;
 
    virtual unsigned star_height() const =0;
    
    virtual ~abstract_ratexp_t() {}
  };
 
 
//   ratexp_t operator+(ratexp_t e1, ratexp_t e2);
//   ratexp_t operator*(ratexp_t e1, ratexp_t e2);
  std::ostream& operator<<(std::ostream& o, ratexp_t e);
 
}}//end of ns awali::dyn
 
#endif