ChainedConnector: Remove In generic parameter

Author: sosthene-nitrokey

src/unversioned/transport/chain.rs

@@ -1,28 +1,26 @@
-use std::marker::PhantomData;
-
 use super::{Connector, Transport};
 
 /// Chain of up to 8 connectors
 ///
 /// Can be created manually from a tuple of connectors through `ChainedConnector::new`
 #[derive(Debug)]
-pub struct ChainedConnector<In, Connectors>(Connectors, PhantomData<In>);
+pub struct ChainedConnector<Connectors>(Connectors);
 
-impl<In, Connectors> ChainedConnector<In, Connectors> {
+impl<Connectors> ChainedConnector<Connectors> {
     /// Create a new chained connector that chains a tuple of connectors
     ///
     /// ```rust
     /// # use ureq::unversioned::transport::{ChainedConnector, SocsConnector, TcpConnector, RustlsConnector, ConnectProxyConnector};
     /// let connector: ChainedConnector<(), (SocsConnector, TcpConnector, RustlsConnector, ConnectProxyConnector)> = ChainedConnector::new(SocsConnector::default(), TcpConnector::default(), RustlsConnector::default(), ConnectProxyConnector::default());
     /// ```
     pub fn new(connectors: Connectors) -> Self {
-        Self(connectors, PhantomData)
+        Self(connectors)
     }
 }
 
 macro_rules! impl_chained_connectors {
     (($first_ty:ident, $first_name: ident) ; $(($ty:ident, $name:ident, $prev_ty:ident)),* ; ($final_ty:ident, $final_name: ident, $pre_final_ty:ident)) => {
-        impl<In, $first_ty, $($ty,)* $final_ty> Connector<In> for ChainedConnector<In, ($first_ty, $($ty,)* $final_ty)>
+        impl<In, $first_ty, $($ty,)* $final_ty> Connector<In> for ChainedConnector<($first_ty, $($ty,)* $final_ty)>
         where
             In: Transport,
             $first_ty: Connector<In>,
@@ -39,7 +37,7 @@ macro_rules! impl_chained_connectors {
                     ref $first_name,
                     $(ref $name,)*
                     ref $final_name,
-                ), _) = self;
+                )) = self;
 
                 let out = $first_name.connect(details, chained)?;
                 $(

src/unversioned/transport/mod.rs

@@ -132,7 +132,7 @@ pub trait Connector<In: Transport = ()>: Debug + Send + Sync + 'static {
     /// Chain this connector to another connector.
     ///
     /// This connector will be called first, and the output goes into the next connector.
-    fn chain<Next: Connector<Self::Out>>(self, next: Next) -> ChainedConnector<In, (Self, Next)>
+    fn chain<Next: Connector<Self::Out>>(self, next: Next) -> ChainedConnector<(Self, Next)>
     where
         Self: Sized,
     {