apcollect.hh

// -*- coding: utf-8 -*-
// Copyright (C) by the Spot authors, see the AUTHORS file for details.
//
// This file is part of Spot, a model checking library.
//
// Spot 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 3 of the License, or
// (at your option) any later version.
//
// Spot 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/>.
 
#pragma once
 
#include <spot/tl/formula.hh>
#include <set>
#include <map>
#include <vector>
#include <bddx.h>
#include <spot/twa/fwd.hh>
 
namespace spot
{
 
  typedef std::set<formula> atomic_prop_set;
 
  SPOT_API
  atomic_prop_set create_atomic_prop_set(unsigned n,
                                         const char* prefix = "p");
 
  SPOT_API atomic_prop_set*
  atomic_prop_collect(formula f, atomic_prop_set* s = nullptr);
 
  SPOT_API bdd
  atomic_prop_collect_as_bdd(formula f, const twa_ptr& a);
 
 
  SPOT_API
  atomic_prop_set collect_literals(formula f);
 
 
  SPOT_API std::map<formula, unsigned char>
  collect_aps_with_polarities(formula f);
 
 
  SPOT_API
  std::vector<std::vector<spot::formula>>
  collect_equivalent_literals(formula f);
 
 
  class SPOT_API realizability_simplifier_base
  {
  public:
    typedef std::vector<std::tuple<formula, bool, formula>> mapping_t;
    enum realizability_simplifier_option {
      polarity = 1,
      global_equiv = 2,
      global_equiv_output_only = 6,
      global_equiv_moore = 10,
    };
    realizability_simplifier_base(const std::vector<std::string>& in_or_out,
                                  bool is_input,
                                  unsigned options = polarity | global_equiv,
                                  std::ostream* verbose = nullptr);
    ~realizability_simplifier_base();
 
    std::pair<formula, mapping_t> simplify(formula f);
  protected:
    struct data;
    data* data_;
  };
 
 
  class SPOT_API realizability_simplifier final:
    public realizability_simplifier_base
  {
  public:
    realizability_simplifier(formula f,
                             const std::vector<std::string>& inputs,
                             unsigned options = polarity | global_equiv,
                             std::ostream* verbose = nullptr);
 
    formula simplified_formula() const
    {
      return f_;
    }
 
    const std::vector<std::tuple<formula, bool, formula>>& get_mapping() const
    {
      return mapping_;
    }
 
    void merge_mapping(const realizability_simplifier& other);
 
    void patch_mealy(twa_graph_ptr mealy) const;
 
    void patch_game(twa_graph_ptr mealy) const;
 
  private:
    std::vector<std::tuple<formula, bool, formula>> mapping_;
    formula f_;
  };
 
}