Implement Deref and DerefMut for built-in extractors (#1922)

axum-extra/src/extract/cached.rs

@@ -3,7 +3,6 @@ use axum::{
     extract::{Extension, FromRequestParts},
 };
 use http::request::Parts;
-use std::ops::{Deref, DerefMut};
 
 /// Cache results of other extractors.
 ///
@@ -108,19 +107,7 @@ where
     }
 }
 
-impl<T> Deref for Cached<T> {
-    type Target = T;
-
-    fn deref(&self) -> &Self::Target {
-        &self.0
-    }
-}
-
-impl<T> DerefMut for Cached<T> {
-    fn deref_mut(&mut self) -> &mut Self::Target {
-        &mut self.0
-    }
-}
+axum_core::__impl_deref!(Cached);
 
 #[cfg(test)]
 mod tests {

axum-extra/src/extract/form.rs

@@ -7,7 +7,7 @@ use axum::{
 };
 use http::{Request, StatusCode};
 use serde::de::DeserializeOwned;
-use std::{fmt, ops::Deref};
+use std::fmt;
 
 /// Extractor that deserializes `application/x-www-form-urlencoded` requests
 /// into some type.
@@ -43,13 +43,7 @@ use std::{fmt, ops::Deref};
 #[cfg(feature = "form")]
 pub struct Form<T>(pub T);
 
-impl<T> Deref for Form<T> {
-    type Target = T;
-
-    fn deref(&self) -> &Self::Target {
-        &self.0
-    }
-}
+axum_core::__impl_deref!(Form);
 
 #[async_trait]
 impl<T, S, B> FromRequest<S, B> for Form<T>

axum-extra/src/extract/query.rs

@@ -6,7 +6,7 @@ use axum::{
 };
 use http::{request::Parts, StatusCode};
 use serde::de::DeserializeOwned;
-use std::{fmt, ops::Deref};
+use std::fmt;
 
 /// Extractor that deserializes query strings into some type.
 ///
@@ -73,13 +73,7 @@ where
     }
 }
 
-impl<T> Deref for Query<T> {
-    type Target = T;
-
-    fn deref(&self) -> &Self::Target {
-        &self.0
-    }
-}
+axum_core::__impl_deref!(Query);
 
 /// Rejection used for [`Query`].
 ///