parse_status_code.hpp

#pragma once
 
#include <type_traits>
 
#include <fmt/format.h>
 
#include <userver/formats/common/meta.hpp>
#include <userver/formats/parse/to.hpp>
#include <userver/http/status_code.hpp>
 
USERVER_NAMESPACE_BEGIN
 
namespace http {
 
template <typename Value,
          typename = std::enable_if_t<formats::common::kIsFormatValue<Value>>>
StatusCode Parse(const Value& value, formats::parse::To<StatusCode>) {
  using IntType = std::underlying_type_t<StatusCode>;
  constexpr IntType kMinCode = 100;
  constexpr IntType kMaxCode = 599;
 
  const auto integer = value.template As<IntType>();
  if (integer < kMinCode || integer > kMaxCode) {
    throw typename Value::Exception(
        fmt::format("StatusCode value {} out of [{}..{}] range at '{}'",
                    integer, kMinCode, kMaxCode, value.GetPath()));
  }
 
  return StatusCode{integer};
}
 
}  // namespace http
 
USERVER_NAMESPACE_END