Move AsRef impl block next to Index

These two traits are related, in as much as they both give access to the
inner byte array. Put them next to each other to assist clarity.

Author: tcharding

secp256k1-sys/src/macros.rs

@@ -45,15 +45,6 @@ macro_rules! impl_array_newtype {
             }
         }
 
-        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
-            }
-        }
-
         // We cannot derive these traits because Rust 1.41.1 requires `std::array::LengthAtMost32`.
 
        #[cfg(fuzzing)]
@@ -90,6 +81,15 @@ macro_rules! impl_array_newtype {
             }
         }
 
+        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<I> core::ops::Index<I> for $thing
         where
             [$ty]: core::ops::Index<I>,

src/macros.rs

@@ -18,15 +18,6 @@
 macro_rules! impl_array_newtype {
     ($thing:ident, $ty:ty, $len:expr) => {
 
-        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
-            }
-        }
-
         // We cannot derive these traits because Rust 1.41.1 requires `std::array::LengthAtMost32`.
 
         impl PartialEq for $thing {
@@ -58,6 +49,15 @@ macro_rules! impl_array_newtype {
             }
         }
 
+        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<I> core::ops::Index<I> for $thing
         where
             [$ty]: core::ops::Index<I>,