start a new ruby layer to do the to_vool conversion

the "normalization" is getting more and more complicated and is not tested
And it seems i really don't like working with the untyped ast

test/ruby/test_variables.rb

@@ -0,0 +1,58 @@
+require_relative "helper"
+
+module Ruby
+  class TestVariablesX < MiniTest::Test
+    include RubyTests
+
+    # "free standing" local can not be tested as it will result in send
+    # in other words ther is no way of knowing if a name is variable or method
+    # one needs an assignemnt first, to "tell" the parser it's a local
+    def test_local_basic
+      lst = compile( "foo = 1 ; foo")
+      assert_equal ScopeStatement , lst.class
+      assert_equal LocalVariable , lst.statements[1].class
+    end
+
+    def test_local_nane
+      lst = compile( "foo = 1 ; foo")
+      assert_equal LocalVariable , lst.statements[1].class
+    end
+
+    def test_instance_basic
+      lst = compile( "@var" )
+      assert_equal InstanceVariable , lst.class
+      assert_equal :var , lst.name
+    end
+
+    def test_instance_return
+      lst = compile( "return @var" )
+      assert_equal InstanceVariable , lst.return_value.class
+    end
+
+    def test_class_basic
+      lst = compile( "@@var" )
+      assert_equal ClassVariable , lst.class
+      assert_equal :var , lst.name
+    end
+
+    def test_class_return
+      lst = compile( "return @@var" )
+      assert_equal ClassVariable , lst.return_value.class
+    end
+
+    def test_module_basic
+      lst = compile( "Module" )
+      assert_equal ModuleName , lst.class
+      assert_equal :Module , lst.name
+    end
+
+    def test_module_base_scoped
+      lst = compile( "::Module" )
+      assert_equal ModuleName , lst.class
+      assert_equal :Module , lst.name
+    end
+    def test_module_module_scoped
+      assert_raises {compile( "M::Module" ) }
+    end
+  end
+end