reflect.hpp

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#pragma once
 
#include <boost/describe.hpp>
#include <boost/type_index.hpp>
#include <string>
 
namespace stax::reflect {
 
constexpr auto Unqualified(std::string sv) {
  if (sv.find(':') == std::string::npos) return sv;
  return sv.substr(sv.find_last_of(':') + 1);
}
 
template <typename T>
constexpr auto GetTypeName() -> std::string {
  auto tidx = boost::typeindex::type_id<T>().pretty_name();
  return Unqualified(tidx);
}
 
template <typename T>
constexpr auto GetTypeName(const T&) -> std::string {
  auto tidx = boost::typeindex::type_id<T>().pretty_name();
  return Unqualified(tidx);
}
 
template <typename T>
constexpr auto GetAllFieldNames() {
  constexpr size_t kFieldCount = boost::mp11::mp_size<
      boost::describe::describe_members<T, boost::describe::mod_any_access>>();
  std::array<std::string, kFieldCount> names;
 
  size_t i = 0;
  boost::mp11::mp_for_each<
      boost::describe::describe_members<T, boost::describe::mod_any_access>>(
      [&i, &names](const auto& member) { names.at(i++) = member.name; });
 
  return names;
}
 
}  // namespace stax::reflect