commit 32245a90896a3591aac8b2c3d19d29a0c80d2a5b
author David Tolnay <dtolnay@gmail.com> Thu May 09 12:32:15 2019 -0700
committer David Tolnay <dtolnay@gmail.com> Thu May 09 13:23:51 2019 -0700
tree 1d341ad991fa562236aab1173f7f7894041bc910
parent 6d16fa808fdc16be1f4186f789bc83b6ee2d5db0

Format newtype variants on one line

codegen/src/debug.rs

diff --git a/codegen/src/debug.rs b/codegen/src/debug.rs
index 92f5dc4..f457810 100644
--- a/codegen/src/debug.rs
+++ b/codegen/src/debug.rs
@@ -155,6 +155,23 @@
                             #format
                         }
                     }
+                } else if fields.len() == 1 {
+                    let ty = &fields[0];
+                    let val = quote!(_val);
+                    let format = format_field(&val, ty).map(|format| {
+                        quote! {
+                            formatter.write_str("(")?;
+                            Debug::fmt(#format, formatter)?;
+                            formatter.write_str(")")?;
+                        }
+                    });
+                    quote! {
+                        syn::#ident::#variant(_val) => {
+                            formatter.write_str(#v)?;
+                            #format
+                            Ok(())
+                        }
+                    }
                 } else {
                     let pats = (0..fields.len())
                         .map(|i| Ident::new(&format!("_v{}", i), Span::call_site()));