impl Serviceの方針をスッキリさせる

[H1rono]

No description provided.

[H1rono]

traq-bot-http-rs/src/macros.rs

Lines 466 to 469 in 3d86c51

	impl<Service, Fallback> ::tower::Service<$crate::Event>
	for [< $e:camel Service >] <Service, Fallback, $crate::payloads::[< $e:camel Payload >] >
	where
	Service: ::tower::Service<$crate::payloads::[< $e:camel Payload >], Response = ()>,

これに対応した1-tupleの実装

        impl<Service, Fallback> ::tower::Service<$crate::Event>
        for [< $e:camel Service >] <Service, Fallback, $crate::payloads::[< $e:camel Payload >] >
        where
            Service: ::tower::Service<($crate::payloads::[< $e:camel Payload >],), Response = ()>, ...

#233 (comment) 逆で, 1-tupleの実装は消す

[H1rono]

impl<S> Service<Request> for Handler<S>
where S: Service<Event, Error = crate::Error>
{ type Error = crate::Error; }

impl<S, F> Service<Event> for OnPing<S, F>
where
    S: Service<PingPayload>,
    S::Error: Into<Box<dyn StdError>>,
    F: Service<Event, Error = crate::Error>,
{ type Error = crate::Error; }

impl Service<Event> for Sink { type Error = crate::Error; }

[H1rono]

WithStateは内側のシグネチャをtransparentしているので問題なし