From 02dec3eb9b0d79fa570800f29968492a7d71242f Mon Sep 17 00:00:00 2001
From: Tobin Harding <me@tobin.cc>
Date: Tue, 22 Dec 2020 11:47:22 +1100
Subject: [PATCH] Implement AsRef instead of custom method

Clippy emits a warning since we define a method that has the same name
as a standard trait. Implement the trait `AsRef` instead of using a
custom method.
---
 secp256k1-sys/src/macros.rs | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/secp256k1-sys/src/macros.rs b/secp256k1-sys/src/macros.rs
index 4a30c27..5ca0198 100644
--- a/secp256k1-sys/src/macros.rs
+++ b/secp256k1-sys/src/macros.rs
@@ -34,13 +34,6 @@ macro_rules! impl_array_newtype {
                 dat.as_mut_ptr()
             }
 
-            #[inline]
-            /// Gets a reference to the underlying array
-            pub fn as_ref(&self) -> &[$ty; $len] {
-                let &$thing(ref dat) = self;
-                dat
-            }
-
             #[inline]
             /// Returns the length of the object as an array
             pub fn len(&self) -> usize { $len }
@@ -50,6 +43,15 @@ macro_rules! impl_array_newtype {
             pub fn is_empty(&self) -> bool { false }
         }
 
+        impl AsRef<[$ty; $len]> for $thing {
+            #[inline]
+            /// Gets a reference to the underlying array
+            fn as_ref(&self) -> &[$ty; $len] {
+                let &$thing(ref dat) = self;
+                dat
+            }
+        }
+
         impl PartialEq for $thing {
             #[inline]
             fn eq(&self, other: &$thing) -> bool {