Add YieldExpr

sasurau4 · sasurau4 · commit bf2dc9934912 · 2021-01-11T20:57:14.000+09:00
diff --git a/rust.ungram b/rust.ungram
@@ -351,6 +351,7 @@ Expr =
 | TryExpr
 | TupleExpr
 | WhileExpr
+| YieldExpr
 
 Literal =
   Attr* value:(
@@ -491,6 +492,9 @@ MatchGuard =
 ReturnExpr =
   Attr* 'return' Expr?
 
+YieldExpr =
+  Attr* 'yield' Expr?
+
 AwaitExpr =
   Attr* Expr '.' 'await'
 
