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/data/substitutions/sort_expression_assignment.h
      10             : /// \brief add your file description here.
      11             : 
      12             : #ifndef MCRL2_DATA_SUBSTITUTIONS_SORT_EXPRESSION_ASSIGNMENT_H
      13             : #define MCRL2_DATA_SUBSTITUTIONS_SORT_EXPRESSION_ASSIGNMENT_H
      14             : 
      15             : #include "mcrl2/data/is_simple_substitution.h"
      16             : #include "mcrl2/data/undefined.h"
      17             : 
      18             : namespace mcrl2 {
      19             : 
      20             : namespace data {
      21             : 
      22             : /// \brief Substitution that maps a sort expression to a sort expression.
      23             : struct sort_expression_assignment
      24             : {
      25             :   typedef sort_expression variable_type;
      26             :   typedef sort_expression expression_type;
      27             : 
      28             :   sort_expression lhs;
      29             :   sort_expression rhs;
      30             : 
      31        6969 :   sort_expression_assignment(const sort_expression& lhs_, const sort_expression& rhs_)
      32        6969 :   : lhs(lhs_),
      33        6969 :     rhs(rhs_)
      34        6969 :   {}
      35             : 
      36       13384 :   const sort_expression& operator()(const sort_expression& x) const
      37             :   {
      38       13384 :     if (x == lhs)
      39             :     {
      40          71 :       return rhs;
      41             :     }
      42       13313 :     return x;
      43             :   }
      44             : };
      45             : 
      46             : 
      47             : } // namespace data
      48             : 
      49             : } // namespace mcrl2
      50             : 
      51             : #endif // MCRL2_DATA_SUBSTITUTIONS_SORT_EXPRESSION_ASSIGNMENT_H