functor.h

/*
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//
//                                  functor.h
//                           DARMA Toolkit v. 1.0.0
//                       DARMA/vt => Virtual Transport
//
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// (NTESS). Under the terms of Contract DE-NA0003525 with NTESS, the U.S.
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#if !defined INCLUDED_UTILS_STATIC_CHECKS_FUNCTOR_H
#define INCLUDED_UTILS_STATIC_CHECKS_FUNCTOR_H

#include "vt/config.h"


namespace vt { namespace util {

template <typename FunctorT>
struct FunctorTraits;

template <typename FunctorT, typename ReturnT, typename MsgT>
struct FunctorTraits<ReturnT(FunctorT::*)(MsgT*)> {
  using FunctorType = FunctorT;
  using MessageType = MsgT;
  using ReturnType  = ReturnT;
};

template <typename FunctorT, typename ReturnT, typename MsgT>
struct FunctorTraits<ReturnT(FunctorT::*)(MsgT*) const> {
  using FunctorType = FunctorT;
  using MessageType = MsgT;
  using ReturnType  = ReturnT;
};

template <
  typename FunctorT,
  typename FunctorFnT = decltype(&FunctorT::operator()),
  typename Traits = FunctorTraits<FunctorFnT>,
  typename MessageT = typename Traits::MessageType
>
struct FunctorExtractor {
  using FunctorType = FunctorT;
  using MsgT = MessageT;
  using MessageType = MessageT;
};

}} /* end namespace vt::util */

#endif /*INCLUDED_UTILS_STATIC_CHECKS_FUNCTOR_H*/