From fb6a489af2765a3b56e301adf0019af6bbad6156 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Thu, 24 Oct 2019 01:06:59 +0900
Subject: Revert "Method reference operator"

This reverts commit 67c574736912003c377218153f9d3b9c0c96a17b.
[Feature #16275]
---
 test/ruby/test_ast.rb        |  9 ---------
 test/ruby/test_jit.rb        |  7 -------
 test/ruby/test_method.rb     | 36 ------------------------------------
 test/ruby/test_refinement.rb |  2 +-
 test/ruby/test_syntax.rb     | 13 ++-----------
 5 files changed, 3 insertions(+), 64 deletions(-)

(limited to 'test/ruby')

diff --git a/test/ruby/test_ast.rb b/test/ruby/test_ast.rb
index a4c18d0ad6..4c156650b8 100644
--- a/test/ruby/test_ast.rb
+++ b/test/ruby/test_ast.rb
@@ -264,15 +264,6 @@ class TestAst < Test::Unit::TestCase
     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
-
   def test_dstr
     node = parse('"foo#{1}bar"')
     _, _, body = *node.children
diff --git a/test/ruby/test_jit.rb b/test/ruby/test_jit.rb
index 803a8e4996..3ef60df7a1 100644
--- a/test/ruby/test_jit.rb
+++ b/test/ruby/test_jit.rb
@@ -482,13 +482,6 @@ class TestJIT < Test::Unit::TestCase
     end;
   end
 
-  def test_compile_insn_methodref
-    assert_compile_once("#{<<~"begin;"}\n#{<<~'end;'}", result_inspect: '"main"', insns: %i[methodref])
-    begin;
-      self.:inspect.call
-    end;
-  end
-
   def test_compile_insn_inlinecache
     assert_compile_once('Struct', result_inspect: 'Struct', insns: %i[opt_getinlinecache opt_setinlinecache])
   end
diff --git a/test/ruby/test_method.rb b/test/ruby/test_method.rb
index 1a1ac59334..afab7eb900 100644
--- a/test/ruby/test_method.rb
+++ b/test/ruby/test_method.rb
@@ -1125,42 +1125,6 @@ class TestMethod < Test::Unit::TestCase
     }
   end
 
-  def test_method_reference_operator
-    m = 1.:succ
-    assert_predicate(m, :frozen?)
-    assert_equal(1.method(:succ), m)
-    assert_equal(2, m.())
-    m = 1.:+
-    assert_predicate(m, :frozen?)
-    assert_equal(1.method(:+), m)
-    assert_equal(42, m.(41))
-    m = 1.:-@
-    assert_predicate(m, :frozen?)
-    assert_equal(1.method(:-@), m)
-    assert_equal(-1, m.())
-    o = Object.new
-    def o.foo; 42; end
-    assert_predicate(o.:foo, :frozen?)
-    m = o.method(:foo)
-    assert_equal(m, o.:foo)
-    def o.method(m); nil; end
-    assert_equal(m, o.:foo)
-    assert_nil(o.method(:foo))
-  end
-
-  def test_method_reference_freeze_state
-    m = 1.:succ
-    assert_predicate(m, :frozen?, "dot-symbol method reference should be frozen")
-    m = 1.method(:succ)
-    assert_not_predicate(m, :frozen?, "#method method reference should not be frozen")
-    o = Object.new
-    def o.foo; 42; end
-    m = o.:foo
-    assert_predicate(m, :frozen?, "dot-symbol method reference should be frozen")
-    m = o.method(:foo)
-    assert_not_predicate(m, :frozen?, "#method method reference should not be frozen")
-  end
-
   def test_umethod_bind_call
     foo = Base.instance_method(:foo)
     assert_equal(:base, foo.bind_call(Base.new))
diff --git a/test/ruby/test_refinement.rb b/test/ruby/test_refinement.rb
index 4be0720983..34451de482 100644
--- a/test/ruby/test_refinement.rb
+++ b/test/ruby/test_refinement.rb
@@ -235,7 +235,7 @@ class TestRefinement < Test::Unit::TestCase
       meth.call(3)
     EOS
     assert_equal(:refine_pow, eval_using(MethodIntegerPowEx, "2.pow(3)"))
-    assert_equal(:refine_pow, eval_using(MethodIntegerPowEx, "2.:pow.(3)"))
+    assert_equal(:refine_pow, eval_using(MethodIntegerPowEx, "2.method(:pow).(3)"))
   end
 
   module InstanceMethodIntegerPowEx
diff --git a/test/ruby/test_syntax.rb b/test/ruby/test_syntax.rb
index 622017be83..286beb7074 100644
--- a/test/ruby/test_syntax.rb
+++ b/test/ruby/test_syntax.rb
@@ -93,13 +93,6 @@ class TestSyntax < Test::Unit::TestCase
     assert_valid_syntax("tap (proc do end)", __FILE__, bug9726)
   end
 
-  def test_methodref_literal
-    assert_separately [], <<-EOS
-      eval 'nil.:|;1'
-      1000.times{eval 'nil.:|;1'}
-    EOS
-  end
-
   def test_array_kwsplat_hash
     kw = {}
     h = {a: 1}
@@ -1014,10 +1007,8 @@ eom
   def test_fluent_dot
     assert_valid_syntax("a\n.foo")
     assert_valid_syntax("a\n&.foo")
-    assert_valid_syntax("a\n.:foo")
     assert_valid_syntax("a #\n#\n.foo\n")
     assert_valid_syntax("a #\n#\n&.foo\n")
-    assert_valid_syntax("a #\n#\n.:foo\n")
   end
 
   def test_safe_call_in_massign_lhs
@@ -1534,8 +1525,8 @@ eom
       assert_warning(/\A\z|:(?!#{__LINE__+1})\d+: #{warning}/o) {
         assert_equal([[], {}], obj.foo({}))
       }
-      assert_equal(-1, obj.:foo.arity)
-      parameters = obj.:foo.parameters
+      assert_equal(-1, obj.method(:foo).arity)
+      parameters = obj.method(:foo).parameters
       assert_equal(:rest, parameters.dig(0, 0))
       assert_equal(:block, parameters.dig(1, 0))
     end
-- 
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