Update ARRAY_EXPR grammar

crates/ra_syntax/src/ast/generated.rs

@@ -67,7 +67,11 @@ fn to_owned(&self) -> TreeArc<ArrayExpr> { TreeArc::cast(self.syntax.to_owned())
 }
 
 
-impl ArrayExpr {}
+impl ArrayExpr {
+    pub fn exprs(&self) -> impl Iterator<Item = &Expr> {
+        super::children(self)
+    }
+}
 
 // ArrayType
 #[derive(Debug, PartialEq, Eq, Hash)]

crates/ra_syntax/src/grammar.ron

@@ -360,7 +360,9 @@ Grammar(
         "TupleExpr": (
             collections: [["exprs", "Expr"]]
         ),
-        "ArrayExpr": (),
+        "ArrayExpr": (
+            collections: [["exprs", "Expr"]]
+        ),
         "ParenExpr": (options: ["Expr"]),
         "PathExpr": (options: ["Path"]),
         "LambdaExpr": (