lps_rewriter_type.h

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// Author(s): Jan Friso Groote (based on mcrl2/pbes/pbes_rewriter_type by Wieger Wesselink)
// Copyright: see the accompanying file COPYING or copy at
// https://github.com/mCRL2org/mCRL2/blob/master/COPYING
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
 
#ifndef MCRL2_LPS_LPS_REWRITER_TYPE_H
#define MCRL2_LPS_LPS_REWRITER_TYPE_H
 
#include "mcrl2/utilities/exception.h"
#include <string>
 
namespace mcrl2 {
 
namespace lps {
 
enum lps_rewriter_type
{
  simplify,
  quantifier_one_point,
  condition_one_point
};
 
inline
lps_rewriter_type parse_lps_rewriter_type(const std::string& type)
{
  if (type == "simplify")
  {
    return simplify         ;
  }
  if (type == "quantifier-one-point")
  {
    return quantifier_one_point;
  }
  if (type == "condition-one-point")
  {
    return condition_one_point;
  }
  throw mcrl2::runtime_error("unknown lps rewriter option " + type);
}
 
inline
std::string print_lps_rewriter_type(const lps_rewriter_type type)
{
  switch (type)
  {
    case simplify:
      return "simplify";
    case quantifier_one_point:
      return "quantifier-one-point";
    case condition_one_point:
      return "condition-one-point";
    default:
    return "unknown lps rewriter";
  }
}
 
inline
std::string description(const lps_rewriter_type type)
{
  switch (type)
  {
    case simplify          :
      return "for simplification";
    case quantifier_one_point :
      return "for one point rule quantifier elimination";
    case condition_one_point :
      return "simplify summands using equalities appearing in condition";
  }
  throw mcrl2::runtime_error("unknown lps rewriter");
}
 
inline
std::istream& operator>>(std::istream& is, lps_rewriter_type& t)
{
  std::string s;
  is >> s;
  try
  {
    t = parse_lps_rewriter_type(s);
  }
  catch (const mcrl2::runtime_error&)
  {
    is.setstate(std::ios_base::failbit);
  }
  return is;
}
 
inline
std::ostream& operator<<(std::ostream& os, const lps_rewriter_type t)
{
  os << print_lps_rewriter_type(t);
  return os;
}
 
} // namespace lps
 
} // namespace mcrl2
 
#endif // MCRL2_LPS_LPS_REWRITER_TYPE_H