Metaprogramming.hpp

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/*
 * Copyright (c) 2011-2022, The DART development contributors
 * All rights reserved.
 *
 * The list of contributors can be found at:
 *   https://github.com/dartsim/dart/blob/master/LICENSE
 *
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 *   without modification, are permitted provided that the following
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#ifndef DART_COMMON_METAPROGRAMMING_HPP_
#define DART_COMMON_METAPROGRAMMING_HPP_
 
// Check for any member with given name, whether var, func, class, union, enum.
#define DART_CREATE_MEMBER_CHECK(member)                                       \
                                                                               \
  template <typename T, typename = std::true_type>                             \
  struct Alias_##member;                                                       \
                                                                               \
  template <typename T>                                                        \
  struct Alias_##member<                                                       \
      T,                                                                       \
      ::std::integral_constant<                                                \
          bool,                                                                \
          ::dart::common::detail::got_type<decltype(&T::member)>::value>>      \
  {                                                                            \
    static const decltype(&T::member) value;                                   \
  };                                                                           \
                                                                               \
  struct AmbiguitySeed_##member                                                \
  {                                                                            \
    char member;                                                               \
  };                                                                           \
                                                                               \
  template <typename T>                                                        \
  struct has_member_##member                                                   \
  {                                                                            \
    static const bool value = ::dart::common::detail::has_member<              \
        Alias_##member<                                                        \
            ::dart::common::detail::ambiguate<T, AmbiguitySeed_##member>>,     \
        Alias_##member<AmbiguitySeed_##member>>::value;                        \
  }
 
#include "dart/common/detail/Metaprogramming-impl.hpp"
 
#endif // DART_COMMON_METAPROGRAMMING_HPP_