commit 92a5651badb98e9dccb94441cd14c6e9c5098332
author David Tolnay <dtolnay@gmail.com> Fri Nov 10 00:02:14 2017 -0800
committer David Tolnay <dtolnay@gmail.com> Fri Nov 10 09:50:08 2017 -0800
tree 96a75732043c9401930ae8a0a66f4bf9586182c8
parent db01722aedafd60de264545ad04f4b1f6286ac99

Require exhaustive pattern matching in switch! parser

src/derive.rs

diff --git a/src/derive.rs b/src/derive.rs
index 9e68d5e..a0c1c8d 100644
--- a/src/derive.rs
+++ b/src/derive.rs
@@ -57,8 +57,7 @@
             which: alt!(
                 syn!(Struct) => { Ok }
                 |
-                // weird hack to get around exhaustiveness check below
-                syn!(Enum) => { |e| Err((e, 1)) }
+                syn!(Enum) => { Err }
             ) >>
             id: syn!(Ident) >>
             generics: syn!(Generics) >>
@@ -78,7 +77,7 @@
                     }),
                 })
                 |
-                Err((e, 1)) => map!(enum_body, move |(wh, body, brace)| DeriveInput {
+                Err(e) => map!(enum_body, move |(wh, body, brace)| DeriveInput {
                     ident: id,
                     vis: vis,
                     attrs: attrs,