is_timed.h

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// Author(s): 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_MODAL_FORMULA_IS_TIMED_H
#define MCRL2_MODAL_FORMULA_IS_TIMED_H
 
#include "mcrl2/modal_formula/traverser.h"
 
namespace mcrl2 {
 
namespace state_formulas {
 
namespace detail {
 
// \brief Visitor for checking if a state formula is timed.
struct is_timed_traverser: public state_formula_traverser<is_timed_traverser>
{
  typedef state_formula_traverser<is_timed_traverser> super;
  using super::enter;
  using super::leave;
  using super::apply;
 
  bool result;
 
  is_timed_traverser()
    : result(false)
  {}
 
  void enter(const delay_timed& /* x */)
  {
    result = true;
  }
 
  void enter(const yaled_timed& /* x */)
  {
    result = true;
  }
 
  void enter(const action_formulas::at& /* x */)
  {
    result = true;
  }
};
 
} // namespace detail
 
inline
bool is_timed(const state_formula& x)
{
  detail::is_timed_traverser f;
  f.apply(x);
  return f.result;
}
 
} // namespace state_formulas
 
} // namespace mcrl2
 
#endif // MCRL2_MODAL_FORMULA_IS_TIMED_H