rename method_compiler

in line with other compiler XX_Compiler being the compiler for that layer
remove type from compiler as it is in method available

test/vool/compilers/helper.rb

@@ -1 +0,0 @@
-require_relative "../helper"

test/vool/compilers/test_method_compiler.rb

@@ -1,79 +0,0 @@
-require_relative "helper"
-
-module Vool
-  class TestMethodCompiler < MiniTest::Test
-    include CompilerHelper
-
-    def setup
-      Risc.machine.boot
-    end
-
-    def create_method
-      VoolCompiler.ruby_to_vool in_Test("def meth; @ivar = 5;end")
-      test = Parfait.object_space.get_class_by_name(:Test)
-      test.get_method(:meth)
-    end
-
-    def test_method_has_source
-      method = create_method
-      assert_equal IvarAssignment ,  method.source.class
-    end
-
-    def test_method_has_no_locals
-      method = create_method
-      assert_equal 1 , method.frame_type.instance_length
-    end
-
-    def test_method_has_no_args
-      method = create_method
-      assert_equal 1 , method.args_type.instance_length
-    end
-
-    def test_creates_method_in_class
-      method = create_method
-      assert method , "No method created"
-      assert_equal Parfait::VoolMethod , method.class
-    end
-
-    def test_creates_method_statement_in_class
-      clazz = VoolCompiler.ruby_to_vool in_Test("def meth; @ivar = 5 ;end")
-      assert_equal MethodStatement , clazz.body.class
-    end
-
-    def test_method_statement_has_class
-      clazz = VoolCompiler.ruby_to_vool in_Test("def meth; @ivar = 5;end")
-      assert clazz.body.clazz
-    end
-
-    def test_parfait_class_creation
-      clazz = VoolCompiler.ruby_to_vool in_Test("def meth; @ivar = 5;end")
-      assert_equal Parfait::Class , clazz.body.clazz.class
-    end
-
-    def test_typed_method_instance_type
-      VoolCompiler.ruby_to_vool in_Test("def meth; @ivar = 5; @ibar = 4;end")
-      test = Parfait.object_space.get_class_by_name(:Test)
-      method = test.instance_type.get_method(:meth)
-      assert_equal 1, method.for_type.variable_index(:ivar)
-      assert_equal 2, method.for_type.variable_index(:ibar)
-    end
-
-    def test_vool_method_has_one_local
-      VoolCompiler.ruby_to_vool in_Test("def meth; local = 5 ; a = 6;end")
-      test = Parfait.object_space.get_class_by_name(:Test)
-      method = test.get_method(:meth)
-      assert_equal 3 , method.frame_type.instance_length
-      assert_equal 1 , method.frame_type.variable_index(:local)
-      assert_equal 2 , method.frame_type.variable_index(:a)
-    end
-
-    def test_typed_method_has_one_local
-      VoolCompiler.ruby_to_vool in_Test("def meth; local = 5 ; a = 6;end")
-      test = Parfait.object_space.get_class_by_name(:Test)
-      method = test.instance_type.get_method(:meth)
-      assert_equal 3 , method.frame_type.instance_length
-      assert_equal 1 , method.frame_type.variable_index(:local)
-    end
-
-  end
-end