Line data    Source code

       1             : // Author(s): Wieger Wesselink
       2             : // Copyright: see the accompanying file COPYING or copy at
       3             : // https://github.com/mCRL2org/mCRL2/blob/master/COPYING
       4             : //
       5             : // Distributed under the Boost Software License, Version 1.0.
       6             : // (See accompanying file LICENSE_1_0.txt or copy at
       7             : // http://www.boost.org/LICENSE_1_0.txt)
       8             : //
       9             : /// \file mcrl2/pbes/rewriters/pfnf_rewriter.h
      10             : /// \brief add your file description here.
      11             : 
      12             : #ifndef MCRL2_PBES_REWRITERS_PFNF_REWRITER_H
      13             : #define MCRL2_PBES_REWRITERS_PFNF_REWRITER_H
      14             : 
      15             : #include "mcrl2/pbes/detail/pfnf_traverser.h"
      16             : 
      17             : namespace mcrl2 {
      18             : 
      19             : namespace pbes_system {
      20             : 
      21             : /// \brief A rewriter that brings PBES expressions into PFNF normal form.
      22             : class pfnf_rewriter
      23             : {
      24             :   public:
      25             :     /// \brief The term type
      26             :     typedef pbes_expression term_type;
      27             : 
      28             :     /// \brief The variable type
      29             :     typedef data::variable variable_type;
      30             : 
      31             :     /// \brief Rewrites a pbes expression.
      32             :     /// \param x A term
      33             :     /// \return The rewrite result.
      34          17 :     pbes_expression operator()(const pbes_expression& x) const
      35             :     {
      36          17 :       pbes_system::detail::pfnf_traverser visitor;
      37          17 :       visitor.apply(x);
      38          34 :       return visitor.evaluate();
      39          17 :     }
      40             : 
      41             :     /// \brief Rewrites a pbes expression.
      42             :     /// \param x A term
      43             :     /// \param sigma A substitution function
      44             :     /// \return The rewrite result.
      45             :     template <typename SubstitutionFunction>
      46             :     pbes_expression operator()(const pbes_expression& x, SubstitutionFunction sigma) const
      47             :     {
      48             :       return sigma(this->operator()(x));
      49             :     }
      50             : };
      51             : 
      52             : } // namespace pbes_system
      53             : 
      54             : } // namespace mcrl2
      55             : 
      56             : #endif // MCRL2_PBES_REWRITERS_PFNF_REWRITER_H