diff --git a/lib/typed/compiler.rb b/lib/typed/compiler.rb
index 5e3d681f..1bdff9d4 100644
--- a/lib/typed/compiler.rb
+++ b/lib/typed/compiler.rb
@@ -2,7 +2,7 @@ require_relative "tree"
 
 module Typed
 
-  CompilerModules = [ "assignment" , "basic_values" , "call_site", "class_field" ,
+  CompilerModules = [ "assignment" , "basic_values" , "call_site", 
                       "class_statement" , "collections" , "field_def" , "field_access",
                       "function_statement" , "if_statement" , "name_expression" ,
                       "operator_expression" , "return_statement", "statement_list",
@@ -92,7 +92,7 @@ module Typed
     # class_name and method_name are pretty clear, args are given as a ruby array
     def create_method( class_name , method_name , args = {})
       raise "create_method #{class_name}.#{class_name.class}" unless class_name.is_a? Symbol
-      clazz = Register.machine.space.get_class_by_name class_name
+      clazz = Register.machine.space.get_class_by_name! class_name
       raise "No such class #{class_name}" unless clazz
       create_method_for( clazz.instance_type , method_name , args)
     end
diff --git a/lib/typed/compiler/class_field.rb b/lib/typed/compiler/class_field.rb
deleted file mode 100644
index 19c8e138..00000000
--- a/lib/typed/compiler/class_field.rb
+++ /dev/null
@@ -1,18 +0,0 @@
-module Typed
-  module ClassField
-
-    def on_ClassField statement
-      #type , name , value = *statement
-
-      for_type = @type
-      raise "no type" unless for_type
-      index = for_type.variable_index(statement.name)
-      raise "class field already defined:#{name} for class #{for_type}" if index
-
-      #FIXME should not hack into current type, but create a new
-      for_type.send(:private_add_instance_variable, statement.name , statement.type)
-
-      return nil # statements don't reurn values, only expressions
-    end
-  end
-end
diff --git a/lib/typed/tree/to_code.rb b/lib/typed/tree/to_code.rb
index 26c07e96..ecac55f4 100644
--- a/lib/typed/tree/to_code.rb
+++ b/lib/typed/tree/to_code.rb
@@ -49,14 +49,6 @@ module Typed
       w
     end
 
-    def on_class_field statement
-      type , name = *statement
-      w = Tree::ClassField.new()
-      w.type = type
-      w.name = name
-      w
-    end
-
     def on_while_statement statement
       branch_type , condition , statements = *statement
       w = Tree::WhileStatement.new()
diff --git a/test/elf/test_hello.rb b/test/elf/test_hello.rb
index 997d62f8..b2e63ee5 100644
--- a/test/elf/test_hello.rb
+++ b/test/elf/test_hello.rb
@@ -13,7 +13,7 @@ class HelloTest < MiniTest::Test
   end
 
   def test_string_put
-    @input = s(:statements, s(:class, :Object, s(:derives, nil),
+    @input = s(:statements, s(:class, :Space, s(:derives, nil),
               s(:statements, s(:function, :Integer, s(:name, :main), s(:parameters),
                 s(:statements, s(:return, s(:call, s(:name, :putstring), s(:arguments),
                       s(:receiver, s(:string, "Hello again\\n")))))))))
diff --git a/test/typed/statements/helper.rb b/test/typed/statements/helper.rb
index 03bc7ab7..fa3afc7b 100644
--- a/test/typed/statements/helper.rb
+++ b/test/typed/statements/helper.rb
@@ -8,11 +8,11 @@ module Statements
     Register.machine.boot # force boot to reset main
   end
 
-  def clean_compile(statements)
-    compiler = Typed::Compiler.new
+  def clean_compile(clazz_name , method_name , args , statements)
+    compiler = Typed::Compiler.new.create_method(clazz_name,method_name,args ).init_method
     compiler.process( Typed.ast_to_code( statements ) )
   end
-  
+
   def check
     assert @expect , "No output given"
     compiler = Typed::Compiler.new Register.machine.space.get_main
diff --git a/test/typed/statements/test_call.rb b/test/typed/statements/test_call.rb
index 46455374..eafd3c5e 100644
--- a/test/typed/statements/test_call.rb
+++ b/test/typed/statements/test_call.rb
@@ -5,7 +5,7 @@ class TestCallStatement < MiniTest::Test
   include Statements
 
   def test_call_constant_int
-    clean_compile s(:statements, s(:class, :Integer, s(:derives, nil), s(:statements, s(:function, :Integer, s(:name, :putint), s(:parameters), s(:statements, s(:return, s(:int, 1)))))))
+    clean_compile :Integer, :putint, {}, s(:statements, s(:return, s(:int, 1)))
     @input = s(:call, s(:name, :putint), s(:arguments), s(:receiver, s(:int, 42)))
     @expect =  [Label, GetSlot, LoadConstant, SetSlot, LoadConstant, SetSlot, LoadConstant ,
                SetSlot, LoadConstant, SetSlot, RegisterTransfer, FunctionCall, Label, RegisterTransfer ,
@@ -15,7 +15,7 @@ class TestCallStatement < MiniTest::Test
 
 
   def test_call_constant_string
-    clean_compile s(:statements, s(:class, :Word, s(:derives, nil), s(:statements, s(:function, :Integer, s(:name, :putstring), s(:parameters), s(:statements, s(:return, s(:int, 1)))))))
+    clean_compile :Word, :putstring,{}, s(:statements, s(:return, s(:int, 1)))
 
     @input =s(:call, s(:name, :putstring), s(:arguments), s(:receiver, s(:string, "Hello")))
     @expect =  [Label, GetSlot, LoadConstant, SetSlot, LoadConstant, SetSlot, LoadConstant ,
@@ -25,7 +25,7 @@ class TestCallStatement < MiniTest::Test
   end
 
   def _test_call_local_int
-    clean_compile s(:statements, s(:class, :Integer, s(:derives, nil), s(:statements, s(:function, :Integer, s(:name, :putint), s(:parameters), s(:statements, s(:return, s(:int, 1)))))))
+    clean_compile :Integer, :putint, {}, s(:statements, s(:return, s(:int, 1)))
     @input = s(:statements, s(:field_def, :Integer, s(:name, :testi), s(:int, 20)), s(:call, s(:name, :putint), s(:arguments), s(:receiver, s(:name, :testi))))
 
     @expect = [Label, LoadConstant, GetSlot, SetSlot, GetSlot, GetSlot, GetSlot ,
@@ -36,7 +36,7 @@ class TestCallStatement < MiniTest::Test
   end
 
   def test_call_local_class
-    clean_compile s(:statements, s(:class, :List, s(:derives, :Object), s(:statements, s(:function, :Integer, s(:name, :add), s(:parameters), s(:statements, s(:return, s(:int, 1)))))))
+    clean_compile :List, :add, {}, s(:statements, s(:return, s(:int, 1)))
 
     @input =s(:statements, s(:field_def, :List, s(:name, :test_l)), s(:call, s(:name, :add), s(:arguments), s(:receiver, s(:name, :test_l))))
     @expect = [Label, GetSlot, GetSlot, GetSlot, SetSlot, LoadConstant, SetSlot ,
diff --git a/test/typed/statements/test_class.rb b/test/typed/statements/test_class.rb
index 387b9de9..c93225ea 100644
--- a/test/typed/statements/test_class.rb
+++ b/test/typed/statements/test_class.rb
@@ -5,7 +5,7 @@ class TestClassStatements < MiniTest::Test
   include Statements
 
   def class_def
-    clean_compile s(:statements, s(:class, :Bar, s(:derives, nil), s(:statements, s(:function, :Integer, s(:name, :buh), s(:parameters), s(:statements, s(:return, s(:int, 1))), s(:receiver, :self)))))
+    clean_compile :Bar, :buh, {}, s(:statements, s(:return, s(:int, 1)))
   end
 
   def test_class_defs
@@ -27,12 +27,12 @@ class TestClassStatements < MiniTest::Test
   end
 
   def test_class_field
-    clean_compile s(:statements, s(:class, :Space, s(:derives, nil), s(:statements, s(:class_field, :Integer, :boo2))))
-
-    @input =s(:statements, s(:return, s(:field_access, s(:receiver, s(:name, :self)),
- s(:field,s(:name, :boo2)))))
-    @expect =  [Label, GetSlot,GetSlot,SetSlot,Label,FunctionReturn]
-    check
+    #  clean_compile :Space, s(:class_field, :Integer, :boo2)
+    #FIXME class_field handling unclear at the moment
+    # @input =s(:statements, s(:return, s(:field_access, s(:receiver, s(:name, :self)),
+    #             s(:field,s(:name, :boo2)))))
+    # @expect =  [Label, GetSlot,GetSlot,SetSlot,Label,FunctionReturn]
+    # check
   end
 end
 end
diff --git a/test/typed/statements/test_fields.rb b/test/typed/statements/test_fields.rb
index c605cbe8..dcf59d95 100644
--- a/test/typed/statements/test_fields.rb
+++ b/test/typed/statements/test_fields.rb
@@ -13,10 +13,9 @@ module Register
     end
 
     def test_field_arg
-      clean_compile s(:statements, s(:class, :Space, s(:derives, nil), s(:statements,
-          s(:function, :Integer, s(:name, :get_name), s(:parameters, s(:parameter, :Message, :main)),
+      clean_compile :Space, :get_name, { :main => :Message},
                 s(:statements, s(:return, s(:field_access,
-                    s(:receiver, s(:name, :main)), s(:field, s(:name, :name)))))))))
+                    s(:receiver, s(:name, :main)), s(:field, s(:name, :name)))))
       @input =s(:statements, s(:field_def, :Message, s(:name, :m)), s(:return, s(:call, s(:name, :get_name), s(:arguments, s(:name, :m)))))
 
       @expect =  [Label, GetSlot, GetSlot, SetSlot, LoadConstant, SetSlot, LoadConstant ,
diff --git a/test/typed/test_to_code.rb b/test/typed/test_to_code.rb
index 12dc42a3..59fc9a0d 100644
--- a/test/typed/test_to_code.rb
+++ b/test/typed/test_to_code.rb
@@ -16,10 +16,6 @@ class ToCodeTest < MiniTest::Test
     @statement = s(:field_def, :Integer, s(:name, :abba), s(:int, 5))
     check "FieldDef"
   end
-  def test_class_field
-    @statement = s(:class_field, :Integer, :fff, s(:int, 3))
-    check "ClassField"
-  end
   def test_simple_while
     @statement = s(:while_statement, :false, s(:conditional,s(:int, 1)), s(:statements))
     check "WhileStatement"