identifiers: Improve readability of server_name methods

crates/ruma-identifiers/src/mxc_uri.rs

@@ -2,7 +2,7 @@
 //!
 //! [MXC URI]: https://matrix.org/docs/spec/client_server/r0.6.1#mxc-uri
 
-use std::{convert::TryFrom, fmt, num::NonZeroU8};
+use std::{convert::TryInto, fmt, num::NonZeroU8};
 
 use ruma_identifiers_validation::{error::MxcUriError, mxc_uri::validate};
 
@@ -34,7 +34,7 @@ impl MxcUri {
     pub fn parts(&self) -> Result<(&ServerName, &str)> {
         self.extract_slash_idx().map(|idx| {
             (
-                <&ServerName>::try_from(&self.full_uri[6..idx.get() as usize]).unwrap(),
+                self.full_uri[6..idx.get() as usize].try_into().unwrap(),
                 &self.full_uri[idx.get() as usize + 1..],
             )
         })

crates/ruma-identifiers/src/room_alias_id.rs

@@ -1,6 +1,6 @@
 //! Matrix room alias identifiers.
 
-use std::{convert::TryFrom, fmt, num::NonZeroU8};
+use std::{convert::TryInto, fmt, num::NonZeroU8};
 
 use crate::server_name::ServerName;
 
@@ -37,7 +37,7 @@ impl RoomAliasId {
 
     /// Returns the server name of the room alias ID.
     pub fn server_name(&self) -> &ServerName {
-        <&ServerName>::try_from(&self.full_id[self.colon_idx.get() as usize + 1..]).unwrap()
+        self.full_id[self.colon_idx.get() as usize + 1..].try_into().unwrap()
     }
 }
 

crates/ruma-identifiers/src/room_id.rs

@@ -1,6 +1,6 @@
 //! Matrix room identifiers.
 
-use std::{convert::TryFrom, fmt, num::NonZeroU8};
+use std::{convert::TryInto, fmt, num::NonZeroU8};
 
 use crate::ServerName;
 
@@ -51,7 +51,7 @@ impl RoomId {
 
     /// Returns the server name of the room ID.
     pub fn server_name(&self) -> &ServerName {
-        <&ServerName>::try_from(&self.full_id[self.colon_idx.get() as usize + 1..]).unwrap()
+        self.full_id[self.colon_idx.get() as usize + 1..].try_into().unwrap()
     }
 }
 

crates/ruma-identifiers/src/user_id.rs

@@ -1,6 +1,6 @@
 //! Matrix user identifiers.
 
-use std::{convert::TryFrom, fmt, num::NonZeroU8};
+use std::{convert::TryInto, fmt, num::NonZeroU8};
 
 use crate::ServerName;
 
@@ -82,7 +82,7 @@ impl UserId {
 
     /// Returns the server name of the user ID.
     pub fn server_name(&self) -> &ServerName {
-        <&ServerName>::try_from(&self.full_id[self.colon_idx.get() as usize + 1..]).unwrap()
+        self.full_id[self.colon_idx.get() as usize + 1..].try_into().unwrap()
     }
 
     /// Whether this user ID is a historical one.