clippy

actix-http/src/h1/dispatcher.rs

@@ -303,9 +303,9 @@ where
         body: &impl MessageBody,
     ) -> Result<BodySize, DispatchError> {
         let size = body.size();
-        let mut this = self.project();
+        let this = self.project();
         this.codec
-            .encode(Message::Item((message, size)), &mut this.write_buf)
+            .encode(Message::Item((message, size)), this.write_buf)
             .map_err(|err| {
                 if let Some(mut payload) = this.payload.take() {
                     payload.set_error(PayloadError::Incomplete(None));
@@ -425,13 +425,13 @@ where
                             Poll::Ready(Some(Ok(item))) => {
                                 this.codec.encode(
                                     Message::Chunk(Some(item)),
-                                    &mut this.write_buf,
+                                    this.write_buf,
                                 )?;
                             }
 
                             Poll::Ready(None) => {
                                 this.codec
-                                    .encode(Message::Chunk(None), &mut this.write_buf)?;
+                                    .encode(Message::Chunk(None), this.write_buf)?;
                                 // payload stream finished.
                                 // set state to None and handle next message
                                 this.state.set(State::None);
@@ -460,13 +460,13 @@ where
                             Poll::Ready(Some(Ok(item))) => {
                                 this.codec.encode(
                                     Message::Chunk(Some(item)),
-                                    &mut this.write_buf,
+                                    this.write_buf,
                                 )?;
                             }
 
                             Poll::Ready(None) => {
                                 this.codec
-                                    .encode(Message::Chunk(None), &mut this.write_buf)?;
+                                    .encode(Message::Chunk(None), this.write_buf)?;
                                 // payload stream finished.
                                 // set state to None and handle next message
                                 this.state.set(State::None);
@@ -592,7 +592,7 @@ where
         let mut updated = false;
         let mut this = self.as_mut().project();
         loop {
-            match this.codec.decode(&mut this.read_buf) {
+            match this.codec.decode(this.read_buf) {
                 Ok(Some(msg)) => {
                     updated = true;
                     this.flags.insert(Flags::STARTED);

actix-http/src/lib.rs

@@ -103,14 +103,9 @@ type ConnectCallback<IO> = dyn Fn(&IO, &mut Extensions);
 ///
 /// # Implementation Details
 /// Uses Option to reduce necessary allocations when merging with request extensions.
+#[derive(Default)]
 pub(crate) struct OnConnectData(Option<Extensions>);
 
-impl Default for OnConnectData {
-    fn default() -> Self {
-        Self(None)
-    }
-}
-
 impl OnConnectData {
     /// Construct by calling the on-connect callback with the underlying transport I/O.
     pub(crate) fn from_io<T>(

actix-http/src/ws/mask.rs

@@ -25,8 +25,8 @@ pub fn apply_mask_fast32(buf: &mut [u8], mask: [u8; 4]) {
     //
     // un aligned prefix and suffix would be mask/unmask per byte.
     // proper aligned middle slice goes into fast path and operates on 4-byte blocks.
-    let (mut prefix, words, mut suffix) = unsafe { buf.align_to_mut::<u32>() };
+    let (prefix, words, suffix) = unsafe { buf.align_to_mut::<u32>() };
-    apply_mask_fallback(&mut prefix, mask);
+    apply_mask_fallback(prefix, mask);
     let head = prefix.len() & 3;
     let mask_u32 = if head > 0 {
         if cfg!(target_endian = "big") {
@@ -40,7 +40,7 @@ pub fn apply_mask_fast32(buf: &mut [u8], mask: [u8; 4]) {
     for word in words.iter_mut() {
         *word ^= mask_u32;
     }
-    apply_mask_fallback(&mut suffix, mask_u32.to_ne_bytes());
+    apply_mask_fallback(suffix, mask_u32.to_ne_bytes());
 }
 
 #[cfg(test)]

actix-router/src/resource.rs

@@ -394,9 +394,7 @@ impl ResourceDef {
     pub fn set_name(&mut self, name: impl Into<String>) {
         let name = name.into();
 
-        if name.is_empty() {
+        assert!(!name.is_empty(), "resource name should not be empty");
-            panic!("resource name should not be empty");
-        }
 
         self.name = Some(name)
     }
@@ -978,9 +976,7 @@ impl ResourceDef {
 
         let (name, pattern) = match param.find(':') {
             Some(idx) => {
-                if tail {
+                assert!(!tail, "custom regex is not supported for tail match");
-                    panic!("custom regex is not supported for tail match");
-                }
 
                 let (name, pattern) = param.split_at(idx);
                 (name, &pattern[1..])
@@ -1087,12 +1083,12 @@ impl ResourceDef {
             re.push_str(&escape(unprocessed));
         }
 
-        if dyn_segment_count > MAX_DYNAMIC_SEGMENTS {
+        assert!(
-            panic!(
+            dyn_segment_count <= MAX_DYNAMIC_SEGMENTS,
-                "Only {} dynamic segments are allowed, provided: {}",
+            "Only {} dynamic segments are allowed, provided: {}",
-                MAX_DYNAMIC_SEGMENTS, dyn_segment_count
+            MAX_DYNAMIC_SEGMENTS,
-            );
+            dyn_segment_count
-        }
+        );
 
         // Store the pattern in capture group #1 to have context info outside it
         let mut re = format!("({})", re);

actix-web-codegen/src/route.rs

@@ -365,5 +365,5 @@ pub(crate) fn with_method(
 fn input_and_compile_error(mut item: TokenStream, err: syn::Error) -> TokenStream {
     let compile_err = TokenStream::from(err.to_compile_error());
     item.extend(compile_err);
-    return item;
+    item
 }

src/middleware/compress.rs

@@ -276,7 +276,7 @@ impl AcceptEncoding {
         let mut encodings = raw
             .replace(' ', "")
             .split(',')
-            .filter_map(|l| AcceptEncoding::new(l))
+            .filter_map(AcceptEncoding::new)
             .collect::<Vec<_>>();
 
         encodings.sort();

src/types/path.rs

@@ -102,7 +102,7 @@ where
     fn from_request(req: &HttpRequest, _: &mut Payload) -> Self::Future {
         let error_handler = req
             .app_data::<PathConfig>()
-            .and_then(|c| c.ehandler.clone());
+            .and_then(|c| c.err_handler.clone());
 
         ready(
             de::Deserialize::deserialize(PathDeserializer::new(req.match_info()))
@@ -158,9 +158,9 @@ where
 ///     );
 /// }
 /// ```
-#[derive(Clone)]
+#[derive(Clone, Default)]
 pub struct PathConfig {
-    ehandler: Option<Arc<dyn Fn(PathError, &HttpRequest) -> Error + Send + Sync>>,
+    err_handler: Option<Arc<dyn Fn(PathError, &HttpRequest) -> Error + Send + Sync>>,
 }
 
 impl PathConfig {
@@ -169,17 +169,11 @@ impl PathConfig {
     where
         F: Fn(PathError, &HttpRequest) -> Error + Send + Sync + 'static,
     {
-        self.ehandler = Some(Arc::new(f));
+        self.err_handler = Some(Arc::new(f));
         self
     }
 }
 
-impl Default for PathConfig {
-    fn default() -> Self {
-        PathConfig { ehandler: None }
-    }
-}
-
 #[cfg(test)]
 mod tests {
     use actix_router::ResourceDef;

src/types/query.rs

@@ -167,7 +167,7 @@ impl<T: DeserializeOwned> FromRequest for Query<T> {
 ///     .app_data(query_cfg)
 ///     .service(index);
 /// ```
-#[derive(Clone)]
+#[derive(Clone, Default)]
 pub struct QueryConfig {
     err_handler: Option<Arc<dyn Fn(QueryPayloadError, &HttpRequest) -> Error + Send + Sync>>,
 }
@@ -183,12 +183,6 @@ impl QueryConfig {
     }
 }
 
-impl Default for QueryConfig {
-    fn default() -> Self {
-        QueryConfig { err_handler: None }
-    }
-}
-
 #[cfg(test)]
 mod tests {
     use actix_http::http::StatusCode;