move @ matches before other patterns

Author: tgross35

src/macros.rs

@@ -221,15 +221,6 @@ macro_rules! e {
 // FIXME(ctest): ctest doesn't like `?` kleenes, `literal` fragments, or `$crate`. See inline
 // comments for what eventually should be fixed.
 macro_rules! c_enum {
-    (
-        $(#[repr($repr:ty)])* /* ? */
-        $ty_name:ident {
-            $($variant:ident $(= $value:tt /* literal */)* /* ? */,)+
-        }
-    ) => {
-        pub type $ty_name = c_enum!(@_ty $($repr)*);
-        c_enum!(@one; $ty_name; 0; $($variant $(= $value)*,)+);
-    };
     // Matcher for a single variant
     (@one; $_ty_name:ident; $_idx:expr;) => {};
     (
@@ -252,6 +243,15 @@ macro_rules! c_enum {
     // Use a specific type if provided, otherwise default to `c_uint`
     (@_ty $repr:ty) => { $repr };
     (@_ty) => { /* $crate */ crate::c_uint };
+    (
+        $(#[repr($repr:ty)])* /* ? */
+        $ty_name:ident {
+            $($variant:ident $(= $value:tt /* literal */)* /* ? */,)+
+        }
+    ) => {
+        pub type $ty_name = c_enum!(@_ty $($repr)*);
+        c_enum!(@one; $ty_name; 0; $($variant $(= $value)*,)+);
+    };
 }
 
 // This is a pretty horrible hack to allow us to conditionally mark some functions as 'const',