to_string.h

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#ifndef ROUTER_SRC_REST_MRS_SRC_HELPER_TO_STRING_H_
#define ROUTER_SRC_REST_MRS_SRC_HELPER_TO_STRING_H_
 
#include <optional>
#include <string>
 
namespace helper {
 
const std::string k_none{"none"};
const std::string k_true{"true"};
const std::string k_false{"false"};
 
inline const std::string &to_string(const bool b) {
  return b ? k_true : k_false;
}
 
inline const std::string &to_string(const std::string &value) { return value; }
 
inline const char *to_cstr(const bool b) { return b ? "true" : "false"; }
 
template <typename Type>
std::string to_string(const std::optional<Type> &v) {
  using helper::to_string;
  using std::to_string;
  if (!v.has_value()) return k_none;
 
  return to_string(v.value());
}
 
}  // namespace helper
 
#endif  // ROUTER_SRC_REST_MRS_SRC_HELPER_TO_STRING_H_