Method reference operator

Introduce the new operator for method reference, `.:`.
[Feature #12125] [Feature #13581]
[EXPERIMENTAL]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66667 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 0 deletions

diff --git a/ast.c b/ast.c
index c3f28eba0b..2ae738f7aa 100644
--- a/ast.c
+++ b/ast.c
@@ -468,6 +468,9 @@ node_children(rb_ast_t *ast, NODE *node)
                                     NEW_CHILD(ast, node->nd_args));
       case NODE_VCALL:
         return rb_ary_new_from_args(1, ID2SYM(node->nd_mid));
+      case NODE_METHREF:
+        return rb_ary_new_from_args(2, NEW_CHILD(ast, node->nd_recv),
+                                    ID2SYM(node->nd_mid));
       case NODE_SUPER:
         return rb_ary_new_from_node_args(ast, 1, node->nd_args);
       case NODE_ZSUPER: