Merge pull request #282 from teloxide/box-pin

Box::pin -> .boxed()

CODE_STYLE.md

@@ -123,3 +123,4 @@ C: Into<String>, { ... }
 ## Misc
  1. Use `Into<...>` only where there exists at least one conversion **and** it will be logically to use.
  2. Always mark a function as `#[must_use]` if its return value **must** be used.
+ 3. `Box::pin(async [move] { ... })` instead of `async [move] { ... }.boxed()`.

src/dispatching/dialogue/dialogue_dispatcher.rs

@@ -6,7 +6,7 @@ use crate::dispatching::{
 };
 use std::{convert::Infallible, marker::PhantomData};
 
-use futures::{future::BoxFuture, StreamExt};
+use futures::{future::BoxFuture, FutureExt, StreamExt};
 use tokio::sync::mpsc;
 
 use lockfree::map::Map;
@@ -137,28 +137,30 @@ where
     {
         let this = Arc::new(self);
 
-        Box::pin(updates.for_each(move |cx| {
-            let this = Arc::clone(&this);
-            let chat_id = cx.update.chat_id();
+        updates
+            .for_each(move |cx| {
+                let this = Arc::clone(&this);
+                let chat_id = cx.update.chat_id();
 
-            match this.senders.get(&chat_id) {
-                // An old dialogue
-                Some(tx) => {
-                    if tx.1.send(cx).is_err() {
-                        panic!("We are not dropping a receiver or call .close() on it",);
+                match this.senders.get(&chat_id) {
+                    // An old dialogue
+                    Some(tx) => {
+                        if tx.1.send(cx).is_err() {
+                            panic!("We are not dropping a receiver or call .close() on it",);
+                        }
+                    }
+                    None => {
+                        let tx = this.new_tx();
+                        if tx.send(cx).is_err() {
+                            panic!("We are not dropping a receiver or call .close() on it",);
+                        }
+                        this.senders.insert(chat_id, tx);
                     }
                 }
-                None => {
-                    let tx = this.new_tx();
-                    if tx.send(cx).is_err() {
-                        panic!("We are not dropping a receiver or call .close() on it",);
-                    }
-                    this.senders.insert(chat_id, tx);
-                }
-            }
 
-            async {}
-        }))
+                async {}
+            })
+            .boxed()
     }
 }
 

src/dispatching/dispatcher_handler_rx_ext.rs

@@ -30,7 +30,7 @@ where
     where
         Self: Stream<Item = UpdateWithCx<Message>>,
     {
-        Box::pin(self.filter_map(|cx| async move { cx.update.text_owned().map(|text| (cx, text)) }))
+        self.filter_map(|cx| async move { cx.update.text_owned().map(|text| (cx, text)) }).boxed()
     }
 
     fn commands<C, N>(self, bot_name: N) -> BoxStream<'static, (UpdateWithCx<Message>, C)>
@@ -41,10 +41,12 @@ where
     {
         let bot_name = bot_name.into();
 
-        Box::pin(self.text_messages().filter_map(move |(cx, text)| {
-            let bot_name = bot_name.clone();
+        self.text_messages()
+            .filter_map(move |(cx, text)| {
+                let bot_name = bot_name.clone();
 
-            async move { C::parse(&text, &bot_name).map(|command| (cx, command)).ok() }
-        }))
+                async move { C::parse(&text, &bot_name).map(|command| (cx, command)).ok() }
+            })
+            .boxed()
     }
 }