ceph/src/boost/boost/describe/enum_to_string.hpp

   1 #ifndef BOOST_DESCRIBE_ENUM_TO_STRING_HPP_INCLUDED
   2 #define BOOST_DESCRIBE_ENUM_TO_STRING_HPP_INCLUDED
   3
   4 // Copyright 2020, 2021 Peter Dimov
   5 // Distributed under the Boost Software License, Version 1.0.
   6 // https://www.boost.org/LICENSE_1_0.txt
   7
   8 #include <boost/describe/detail/config.hpp>
   9
  10 #if defined(BOOST_DESCRIBE_CXX14)
  11
  12 #include <boost/describe/enumerators.hpp>
  13 #include <boost/mp11/algorithm.hpp>
  14
  15 namespace boost
  16 {
  17 namespace describe
  18 {
  19
  20 template<class E, class De = describe_enumerators<E>>
  21 char const * enum_to_string( E e, char const* def ) noexcept
  22 {
  23     char const * r = def;
  24
  25     mp11::mp_for_each<De>([&](auto D){
  26
  27         if( e == D.value ) r = D.name;
  28
  29     });
  30
  31     return r;
  32 }
  33
  34 } // namespace describe
  35 } // namespace boost
  36
  37 #endif // defined(BOOST_DESCRIBE_CXX14)
  38
  39 #endif // #ifndef BOOST_DESCRIBE_ENUM_TO_STRING_HPP_INCLUDED