Revert "This commit implements the Object Shapes technique in CRuby."

This reverts commit 68bc9e2e97d12f80df0d113e284864e225f771c2.

1 files changed, 0 insertions, 173 deletions

diff --git a/test/ruby/test_shapes.rb b/test/ruby/test_shapes.rb
deleted file mode 100644
index 807d485354..0000000000
--- a/test/ruby/test_shapes.rb
+++ /dev/null
@@ -1,173 +0,0 @@
-# frozen_string_literal: false
-require 'test/unit'
-
-# These test the functionality of object shapes
-class TestShapes < Test::Unit::TestCase
-  class Example
-    def initialize
-      @a = 1
-    end
-  end
-
-  class RemoveAndAdd
-    def add_foo
-      @foo = 1
-    end
-
-    def remove
-      remove_instance_variable(:@foo)
-    end
-
-    def add_bar
-      @bar = 1
-    end
-  end
-
-  # RubyVM.debug_shape returns new instances of shape objects for
-  # each call. This helper method allows us to define equality for
-  # shapes
-  def assert_shape_equal(shape1, shape2)
-    assert_equal(shape1.id, shape2.id)
-    assert_equal(shape1.parent_id, shape2.parent_id)
-    assert_equal(shape1.depth, shape2.depth)
-    assert_equal(shape1.type, shape2.type)
-  end
-
-  def refute_shape_equal(shape1, shape2)
-    refute_equal(shape1.id, shape2.id)
-  end
-
-  def test_iv_index
-    example = RemoveAndAdd.new
-    shape = RubyVM.debug_shape(example)
-    assert_equal 0, shape.iv_count
-
-    example.add_foo # makes a transition
-    new_shape = RubyVM.debug_shape(example)
-    assert_equal([:@foo], example.instance_variables)
-    assert_equal(shape.id, new_shape.parent.id)
-    assert_equal(1, new_shape.iv_count)
-
-    example.remove # makes a transition
-    remove_shape = RubyVM.debug_shape(example)
-    assert_equal([], example.instance_variables)
-    assert_equal(new_shape.id, remove_shape.parent.id)
-    assert_equal(1, remove_shape.iv_count)
-
-    example.add_bar # makes a transition
-    bar_shape = RubyVM.debug_shape(example)
-    assert_equal([:@bar], example.instance_variables)
-    assert_equal(remove_shape.id, bar_shape.parent.id)
-    assert_equal(2, bar_shape.iv_count)
-  end
-
-  def test_new_obj_has_root_shape
-    assert_shape_equal(RubyVM.debug_root_shape, RubyVM.debug_shape(Object.new))
-  end
-
-  def test_frozen_new_obj_has_frozen_root_shape
-    assert_shape_equal(
-      RubyVM.debug_frozen_root_shape,
-      RubyVM.debug_shape(Object.new.freeze)
-    )
-  end
-
-  def test_str_has_root_shape
-    assert_shape_equal(RubyVM.debug_root_shape, RubyVM.debug_shape(""))
-  end
-
-  def test_array_has_root_shape
-    assert_shape_equal(RubyVM.debug_root_shape, RubyVM.debug_shape([]))
-  end
-
-  def test_hash_has_root_shape
-    assert_shape_equal(RubyVM.debug_root_shape, RubyVM.debug_shape({}))
-  end
-
-  def test_true_has_frozen_root_shape
-    assert_shape_equal(RubyVM.debug_frozen_root_shape, RubyVM.debug_shape(true))
-  end
-
-  def test_nil_has_frozen_root_shape
-    assert_shape_equal(RubyVM.debug_frozen_root_shape, RubyVM.debug_shape(nil))
-  end
-
-  def test_basic_shape_transition
-    obj = Example.new
-    refute_equal(RubyVM.debug_root_shape, RubyVM.debug_shape(obj))
-    assert_shape_equal(RubyVM.debug_root_shape.edges[:@a], RubyVM.debug_shape(obj))
-    assert_equal(obj.instance_variable_get(:@a), 1)
-  end
-
-  def test_different_objects_make_same_transition
-    obj = Example.new
-    obj2 = ""
-    obj2.instance_variable_set(:@a, 1)
-    assert_shape_equal(RubyVM.debug_shape(obj), RubyVM.debug_shape(obj2))
-  end
-
-  def test_duplicating_objects
-    obj = Example.new
-    obj2 = obj.dup
-    assert_shape_equal(RubyVM.debug_shape(obj), RubyVM.debug_shape(obj2))
-  end
-
-  def test_freezing_and_duplicating_object
-    obj = Object.new.freeze
-    obj2 = obj.dup
-    refute_predicate(obj2, :frozen?)
-    # dup'd objects shouldn't be frozen, and the shape should be the
-    # parent shape of the copied object
-    assert_equal(RubyVM.debug_shape(obj).parent.id, RubyVM.debug_shape(obj2).id)
-  end
-
-  def test_freezing_and_duplicating_object_with_ivars
-    obj = Example.new.freeze
-    obj2 = obj.dup
-    refute_predicate(obj2, :frozen?)
-    refute_shape_equal(RubyVM.debug_shape(obj), RubyVM.debug_shape(obj2))
-    assert_equal(obj2.instance_variable_get(:@a), 1)
-  end
-
-  def test_freezing_and_duplicating_string_with_ivars
-    str = "str"
-    str.instance_variable_set(:@a, 1)
-    str.freeze
-    str2 = str.dup
-    refute_predicate(str2, :frozen?)
-    refute_equal(RubyVM.debug_shape(str).id, RubyVM.debug_shape(str2).id)
-    assert_equal(str2.instance_variable_get(:@a), 1)
-  end
-
-  def test_freezing_and_cloning_objects
-    obj = Object.new.freeze
-    obj2 = obj.clone(freeze: true)
-    assert_predicate(obj2, :frozen?)
-    assert_shape_equal(RubyVM.debug_shape(obj), RubyVM.debug_shape(obj2))
-  end
-
-  def test_freezing_and_cloning_object_with_ivars
-    obj = Example.new.freeze
-    obj2 = obj.clone(freeze: true)
-    assert_predicate(obj2, :frozen?)
-    assert_shape_equal(RubyVM.debug_shape(obj), RubyVM.debug_shape(obj2))
-    assert_equal(obj2.instance_variable_get(:@a), 1)
-  end
-
-  def test_freezing_and_cloning_string
-    str = "str".freeze
-    str2 = str.clone(freeze: true)
-    assert_predicate(str2, :frozen?)
-    assert_shape_equal(RubyVM.debug_shape(str), RubyVM.debug_shape(str2))
-  end
-
-  def test_freezing_and_cloning_string_with_ivars
-    str = "str"
-    str.instance_variable_set(:@a, 1)
-    str.freeze
-    str2 = str.clone(freeze: true)
-    assert_predicate(str2, :frozen?)
-    assert_shape_equal(RubyVM.debug_shape(str), RubyVM.debug_shape(str2))
-    assert_equal(str2.instance_variable_get(:@a), 1)
-  end
-end