12#include <userver/formats/json_fwd.hpp>
13#include <userver/formats/parse/common.hpp>
14#include <userver/formats/parse/common_containers.hpp>
15#include <userver/formats/yaml/value.hpp>
17#include <userver/yaml_config/iterator.hpp>
19USERVER_NAMESPACE_BEGIN
92 YamlConfig() =
default;
168 template <
typename T>
174 template <
typename T,
typename First,
typename... Rest>
175 auto As(First&& default_arg, Rest&&... more_default_args)
const;
180 template <
typename T>
198 const_iterator
end()
const;
201 formats::
yaml::Value yaml_;
202 formats::
yaml::Value config_vars_;
209 friend std::string Parse(
const YamlConfig& value,
210 formats::
parse::
To<std::string>);
218 "There is no `Parse(const yaml_config::YamlConfig&, "
219 "formats::parse::To<T>)`"
220 "in namespace of `T` or `formats::parse`. "
221 "Probably you forgot to include the "
222 "<userver/formats/parse/common_containers.hpp> or you "
223 "have not provided a `Parse` function overload.");
225 return Parse(*
this, formats::
parse::
To<T>{});
238template <
typename T,
typename First,
typename... Rest>
239auto YamlConfig::
As(First&& default_arg, Rest&&... more_default_args)
const {
243 return decltype(As<T>())(std::forward<First>(default_arg),
244 std::forward<Rest>(more_default_args)...);
251 return IsMissing() ?
decltype(As<T>())() : As<T>();
259using formats::
common::Items;
270 formats::
parse::
To<std::chrono::milliseconds>);