Add impl From for enum variant assist

Basically adds a From impl for tuple enum variants with one field. Added
to cover the fairly common case of implementing your own Error that can
be created from another one, although other use cases exist.

1 files changed, 2 insertions, 0 deletions

diff --git a/crates/ra_assists/src/lib.rs b/crates/ra_assists/src/lib.rs
index fa1f3dd26..6b4c56dcd 100644
--- a/crates/ra_assists/src/lib.rs
+++ b/crates/ra_assists/src/lib.rs
@@ -122,6 +122,7 @@ mod handlers {
     mod replace_qualified_name_with_use;
     mod replace_unwrap_with_match;
     mod split_import;
+    mod add_from_impl_for_enum;
 
     pub(crate) fn all() -> &'static [AssistHandler] {
         &[
@@ -159,6 +160,7 @@ mod handlers {
             replace_qualified_name_with_use::replace_qualified_name_with_use,
             replace_unwrap_with_match::replace_unwrap_with_match,
             split_import::split_import,
+            add_from_impl_for_enum::add_from_impl_for_enum,
         ]
     }
 }