fixup

Author: ecstatic-morse

crates/ra_parser/src/grammar/items.rs

@@ -258,7 +258,7 @@ fn items_without_modifiers(p: &mut Parser, m: Marker) -> Result<(), Marker> {
         }
         T![enum] => nominal::enum_def(p, m),
         T![use] => use_item::use_item(p, m),
-        T![const] if (la == UNDERSCORE || la == IDENT || la == T![mut]) => consts::const_def(p, m),
+        T![const] if (la == IDENT || la == T![_] || la == T![mut]) => consts::const_def(p, m),
         T![static] => consts::static_def(p, m),
         // test extern_block
         // extern {}

crates/ra_parser/src/grammar/items/consts.rs

@@ -14,7 +14,7 @@ fn const_or_static(p: &mut Parser, m: Marker, kw: SyntaxKind, def: SyntaxKind) {
     p.eat(T![mut]); // FIXME: validator to forbid const mut
 
     // Allow `_` in place of an identifier in a `const`.
-    let is_const_underscore = kw == T![const] && p.eat(UNDERSCORE);
+    let is_const_underscore = kw == T![const] && p.eat(T![_]);
     if !is_const_underscore {
         name(p);
     }