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, 9 insertions, 0 deletions

diff --git a/test/ruby/test_ast.rb b/test/ruby/test_ast.rb
index 055567d574..ed4bcb37c0 100644
--- a/test/ruby/test_ast.rb
+++ b/test/ruby/test_ast.rb
@@ -249,4 +249,13 @@ class TestAst < Test::Unit::TestCase
     assert_equal(:b, mid)
     assert_equal(:SCOPE, defn.type)
   end
+
+  def test_methref
+    node = RubyVM::AbstractSyntaxTree.parse("obj.:foo")
+    _, _, body = *node.children
+    assert_equal(:METHREF, body.type)
+    recv, mid = body.children
+    assert_equal(:VCALL, recv.type)
+    assert_equal(:foo, mid)
+  end
 end