diff --git a/lib/ruby.rb b/lib/ruby.rb
new file mode 100644
index 00000000..34b45b7e
--- /dev/null
+++ b/lib/ruby.rb
@@ -0,0 +1,28 @@
+require "parser/ruby22"
+require "ast"
+
+AST::Node.class_eval do
+  def first
+    children.first
+  end
+end
+
+require_relative "ruby/statement"
+require_relative "ruby/statements"
+require_relative "ruby/array_statement"
+require_relative "ruby/block_statement"
+require_relative "ruby/if_statement"
+require_relative "ruby/normalizer"
+require_relative "ruby/send_statement"
+require_relative "ruby/assign_statement"
+require_relative "ruby/class_statement"
+require_relative "ruby/logical_statement"
+require_relative "ruby/return_statement"
+require_relative "ruby/while_statement"
+require_relative "ruby/basic_values"
+require_relative "ruby/hash_statement"
+require_relative "ruby/method_statement"
+require_relative "ruby/ruby_compiler"
+require_relative "ruby/yield_statement"
+
+require_relative "ruby/ruby_compiler"
diff --git a/lib/ruby/array_statement.rb b/lib/ruby/array_statement.rb
new file mode 100644
index 00000000..ad82e02e
--- /dev/null
+++ b/lib/ruby/array_statement.rb
@@ -0,0 +1,13 @@
+module Ruby
+  class ArrayStatement
+    attr_reader :values
+
+    def initialize( values )
+      @values = values
+    end
+
+    def length
+      @values.length
+    end
+  end
+end
diff --git a/lib/ruby/assign_statement.rb b/lib/ruby/assign_statement.rb
new file mode 100644
index 00000000..b03784e5
--- /dev/null
+++ b/lib/ruby/assign_statement.rb
@@ -0,0 +1,53 @@
+module Ruby
+
+  class Assignment < Statement
+    attr_reader :name , :value
+    def initialize(name , value )
+      @name , @value = name , value
+    end
+
+    def normalize()
+      raise "not named left #{name.class}" unless name.is_a?(Symbol)
+      case value
+      when Named , Constant
+        return copy
+      when SendStatement
+        return normalize_send
+      else
+        raise "unsupported right #{value}"
+      end
+    end
+
+    def copy(value = nil)
+      value ||= @value
+      self.class.new(name,value)
+    end
+
+    def normalize_send
+      statements = value.normalize()
+      return copy( statements ) if statements.is_a?(SendStatement)
+      assign = statements.statements.pop
+      statements << copy(assign)
+      statements
+    end
+
+    def chain_assign(assign , compiler)
+      return assign unless @value.is_a?(SendStatement)
+      @value.to_mom(compiler) << assign
+    end
+
+    def to_s(depth = 0)
+      at_depth(depth , "#{@name} = #{@value}")
+    end
+
+  end
+
+  class IvarAssignment < Assignment
+
+    def normalize()
+      super()
+      return IvarAssignment.new(@name , @value)
+    end
+
+  end
+end
diff --git a/lib/ruby/basic_values.rb b/lib/ruby/basic_values.rb
new file mode 100644
index 00000000..f4a73a66
--- /dev/null
+++ b/lib/ruby/basic_values.rb
@@ -0,0 +1,108 @@
+module Ruby
+  class Constant < Expression
+    #gobble it up
+    def each(&block)
+    end
+  end
+
+  class IntegerConstant < Constant
+    attr_reader :value
+    def initialize(value)
+      @value = value
+    end
+    def slot_definition(compiler)
+      return Mom::SlotDefinition.new(Mom::IntegerConstant.new(@value) , [])
+    end
+    def ct_type
+      Parfait.object_space.get_type_by_class_name(:Integer)
+    end
+    def to_s
+      value.to_s
+    end
+    def each(&block)
+    end
+  end
+  class FloatConstant < Constant
+    attr_reader :value
+    def initialize(value)
+      @value = value
+    end
+    def ct_type
+      true
+    end
+  end
+  class TrueConstant < Constant
+    def ct_type
+      Parfait.object_space.get_type_by_class_name(:True)
+    end
+    def slot_definition(compiler)
+      return Mom::SlotDefinition.new(Parfait.object_space.true_object , [])
+    end
+    def to_s(depth = 0)
+      "true"
+    end
+  end
+  class FalseConstant < Constant
+    def ct_type
+      Parfait.object_space.get_type_by_class_name(:False)
+    end
+    def slot_definition(compiler)
+      return Mom::SlotDefinition.new(Parfait.object_space.false_object , [])
+    end
+    def to_s(depth = 0)
+      "false"
+    end
+  end
+  class NilConstant < Constant
+    def ct_type
+      Parfait.object_space.get_type_by_class_name(:Nil)
+    end
+    def slot_definition(compiler)
+      return Mom::SlotDefinition.new(Parfait.object_space.nil_object , [])
+    end
+    def to_s(depth = 0)
+      "nil"
+    end
+  end
+  class SelfExpression < Expression
+    attr_reader :my_type
+    def initialize(type = nil)
+      @my_type = type
+    end
+    def slot_definition(compiler)
+      @my_type = compiler.receiver_type
+      Mom::SlotDefinition.new(:message , [:receiver])
+    end
+    def ct_type
+      @my_type
+    end
+    def to_s(depth = 0)
+      "self"
+    end
+  end
+  class SuperExpression < Statement
+    def to_s(depth = 0)
+      "super"
+    end
+  end
+  class StringConstant < Constant
+    attr_reader :value
+    def initialize(value)
+      @value = value
+    end
+    def slot_definition(compiler)
+      return Mom::SlotDefinition.new(Mom::StringConstant.new(@value),[])
+    end
+    def ct_type
+      Parfait.object_space.get_type_by_class_name(:Word)
+    end
+    def to_s(depth = 0)
+      "'#{@value}'"
+    end
+  end
+  class SymbolConstant < StringConstant
+    def ct_type
+      Parfait.object_space.get_type_by_class_name(:Word)
+    end
+  end
+end
diff --git a/lib/ruby/block_statement.rb b/lib/ruby/block_statement.rb
new file mode 100644
index 00000000..c73e1382
--- /dev/null
+++ b/lib/ruby/block_statement.rb
@@ -0,0 +1,17 @@
+module Vool
+
+  class BlockStatement < Statement
+    attr_reader :args , :body , :clazz
+
+    def initialize( args , body , something_really_else)
+      @args , @body = args , body
+      raise "no bod" unless @body
+      @clazz = clazz
+    end
+
+    def normalize
+      BlockStatement.new( @args , @body.normalize)
+    end
+
+  end
+end
diff --git a/lib/ruby/class_statement.rb b/lib/ruby/class_statement.rb
new file mode 100644
index 00000000..aada50ac
--- /dev/null
+++ b/lib/ruby/class_statement.rb
@@ -0,0 +1,28 @@
+module Ruby
+  class ClassStatement < Statement
+    attr_reader :name, :super_class_name , :body
+
+    def initialize( name , supe , body)
+      @name , @super_class_name = name , supe
+      case body
+      when MethodStatement
+        @body = Statements.new([body])
+      when Statements
+        @body = body
+      when nil
+        @body = Statements.new([])
+      else
+        raise "what body #{body}"
+      end
+    end
+
+    def normalize
+      meths = body.statements.collect{|meth| meth.normalize}
+      ClassStatement.new(@name , @super_class_name, Statements.new(meths) )
+    end
+
+    def to_s(depth = 0)
+      at_depth(depth , "class #{name}" , @body.to_s(depth + 1) , "end")
+    end
+  end
+end
diff --git a/lib/ruby/hash_statement.rb b/lib/ruby/hash_statement.rb
new file mode 100644
index 00000000..361314ff
--- /dev/null
+++ b/lib/ruby/hash_statement.rb
@@ -0,0 +1,17 @@
+module Ruby
+  class HashStatement
+    attr_reader :hash
+
+    def initialize(  )
+      @hash = {}
+    end
+
+    def add(key , value)
+      @hash[key] = value
+    end
+
+    def length
+      @hash.length
+    end
+  end
+end
diff --git a/lib/ruby/if_statement.rb b/lib/ruby/if_statement.rb
new file mode 100644
index 00000000..5ede89f1
--- /dev/null
+++ b/lib/ruby/if_statement.rb
@@ -0,0 +1,39 @@
+require_relative "normalizer"
+
+module Ruby
+  class IfStatement < Statement
+    include Normalizer
+
+    attr_reader :condition , :if_true , :if_false
+
+    def initialize( cond , if_true , if_false = nil)
+      @condition = cond
+      @if_true = if_true
+      @if_false = if_false
+    end
+
+    def normalize
+      cond , rest = *normalize_name(@condition)
+      fals = @if_false ? @if_false.normalize : nil
+      me = IfStatement.new(cond , @if_true.normalize, fals)
+      return me unless rest
+      rest << me
+      rest
+    end
+
+    def has_false?
+      @if_false != nil
+    end
+
+    def has_true?
+      @if_true != nil
+    end
+
+    def to_s(depth = 0)
+      parts = ["if (#{@condition})" , @body.to_s(depth + 1) ]
+      parts += ["else" ,  "@if_false.to_s(depth + 1)"] if(@false)
+      parts << "end"
+      at_depth(depth , *parts )
+    end
+  end
+end
diff --git a/lib/ruby/logical_statement.rb b/lib/ruby/logical_statement.rb
new file mode 100644
index 00000000..77a6badb
--- /dev/null
+++ b/lib/ruby/logical_statement.rb
@@ -0,0 +1,16 @@
+module Ruby
+  # Logical Statements are guaranteed to return boolean
+  # either :and or :or, which may be written as && and ||
+  class LogicalStatement < Statement
+    attr_reader :name , :left , :right
+
+    def initialize(name , left , right)
+      @name , @left , @right = name , left , right
+    end
+
+    def to_s(depth = 0)
+      at_depth(depth , "#{left} #{name} #{right}")
+    end
+
+  end
+end
diff --git a/lib/ruby/method_statement.rb b/lib/ruby/method_statement.rb
new file mode 100644
index 00000000..234b9d0b
--- /dev/null
+++ b/lib/ruby/method_statement.rb
@@ -0,0 +1,27 @@
+module Ruby
+  class MethodStatement < Statement
+    attr_reader :name, :args , :body , :clazz
+
+    def initialize( name , args , body , clazz = nil)
+      @name , @args , @body = name , args , body
+      raise "no bod" unless @body
+      @clazz = clazz
+    end
+
+
+    def normalize
+      MethodStatement.new( @name , @args , @body.normalize)
+    end
+
+    def has_yield?
+      each{|statement| return true if statement.is_a?(YieldStatement)}
+      return false
+    end
+
+    def to_s(depth = 0)
+      arg_str = @args.collect{|a| a.to_s}.join(', ')
+      at_depth(depth , "def #{name}(#{arg_str})" , @body.to_s(depth + 1) , "end")
+    end
+
+  end
+end
diff --git a/lib/ruby/normalizer.rb b/lib/ruby/normalizer.rb
new file mode 100644
index 00000000..5476d70f
--- /dev/null
+++ b/lib/ruby/normalizer.rb
@@ -0,0 +1,22 @@
+module Ruby
+  module Normalizer
+    # given a something, determine if it is a Name
+    #
+    # Return a Name, and a possible rest that has a hoisted part of the statement
+    #
+    # eg  if( @var % 5) is not normalized
+    # but if(tmp_123) is with tmp_123 = @var % 5 hoisted above the if
+    #
+    # also constants count, though they may not be so useful in ifs, but returns
+    def normalize_name( condition )
+      if( condition.is_a?(ScopeStatement) and condition.single?)
+        condition = condition.first
+      end
+      return [condition] if condition.is_a?(Named) or condition.is_a?(Constant)
+      condition = condition.normalize
+      local = "tmp_#{object_id}".to_sym
+      assign = Statements.new [LocalAssignment.new( local , condition)]
+      [LocalVariable.new(local) , assign]
+    end
+  end
+end
diff --git a/lib/ruby/return_statement.rb b/lib/ruby/return_statement.rb
new file mode 100644
index 00000000..9cf7de8d
--- /dev/null
+++ b/lib/ruby/return_statement.rb
@@ -0,0 +1,23 @@
+module Ruby
+  class ReturnStatement < Statement
+    include Normalizer
+
+    attr_reader :return_value
+
+    def initialize(value)
+      @return_value = value
+    end
+
+    def normalize
+      val , rest = *normalize_name(@return_value)
+      me = ReturnStatement.new(val)
+      return me unless rest
+      rest << me
+      rest
+    end
+
+    def to_s(depth = 0)
+      at_depth(depth , "return #{@return_value.to_s}")
+    end
+  end
+end
diff --git a/lib/rubyx/ruby_compiler.rb b/lib/ruby/ruby_compiler.rb
similarity index 69%
rename from lib/rubyx/ruby_compiler.rb
rename to lib/ruby/ruby_compiler.rb
index 61554154..f9427962 100644
--- a/lib/rubyx/ruby_compiler.rb
+++ b/lib/ruby/ruby_compiler.rb
@@ -1,12 +1,13 @@
-
-module RubyX
-  # This RubyCompiler compiles incoming ruby (string) into vools internal representation
-  # with the help of the parser gem. The parser outputs an abstract ast (nodes)
+module Ruby
+  # This RubyCompiler compiles incoming ruby (string) into a typed
+  # version of theast, with the help of the parser gem.
+  # The parser outputs an abstract ast (nodes)
   # that get transformed into concrete, specific classes.
   #
   # As a second step, it extracts classes, methods, ivars and locals.
   #
-  # The next step is then to normalize the code and then finally to compile
+  # The next step is then to go to the vool level, which is
+  # simpler, and then finally to compile
   # to the next level down, MOM (Minimal Object Machine)
   class RubyCompiler < AST::Processor
   include AST::Sexp
@@ -23,13 +24,13 @@ module RubyX
 
     def on_class( statement )
       name , sup , body = *statement
-      Vool::ClassStatement.new( get_name(name) , get_name(sup) , process(body) )
+      ClassStatement.new( get_name(name) , get_name(sup) , process(body) )
     end
 
     def on_def( statement )
       name , args , body = *statement
       arg_array = process_all( args )
-      Vool::MethodStatement.new( name , arg_array , process(body) )
+      MethodStatement.new( name , arg_array , process(body) )
     end
 
     def on_arg( arg )
@@ -40,13 +41,13 @@ module RubyX
       sendd = process(block_node.children[0])
       args = process(block_node.children[1])
       body = process(block_node.children[2])
-      sendd.add_block Vool::BlockStatement.new(args , body)
+      sendd.add_block BlockStatement.new(args , body)
       sendd
     end
 
     def on_yield(node)
       args = process_all(node.children)
-      Vool::YieldStatement.new(args)
+      YieldStatement.new(args)
     end
 
     def on_args(args)
@@ -55,31 +56,31 @@ module RubyX
 
     #basic Values
     def on_self exp
-      Vool::SelfExpression.new
+      SelfExpression.new
     end
 
     def on_nil expression
-      Vool::NilConstant.new
+      NilConstant.new
     end
 
     def on_int expression
-      Vool::IntegerConstant.new(expression.children.first)
+      IntegerConstant.new(expression.children.first)
     end
 
     def on_float expression
-      Vool::FloatConstant.new(expression.children.first)
+      FloatConstant.new(expression.children.first)
     end
 
     def on_true expression
-      Vool::TrueConstant.new
+      TrueConstant.new
     end
 
     def on_false expression
-      Vool::FalseConstant.new
+      FalseConstant.new
     end
 
     def on_str expression
-      Vool::StringConstant.new(expression.children.first)
+      StringConstant.new(expression.children.first)
     end
     alias  :on_string :on_str
 
@@ -89,7 +90,7 @@ module RubyX
     alias  :on_xstr :on_dstr
 
     def on_sym expression
-      Vool::SymbolConstant.new(expression.children.first)
+      SymbolConstant.new(expression.children.first)
     end
     alias  :on_string :on_str
 
@@ -97,17 +98,17 @@ module RubyX
       raise "Not implemented dynamix symbols (with interpolation)"
     end
     def on_kwbegin statement
-      Vool::ScopeStatement.new process_all( statement.children )
+      ScopeStatement.new process_all( statement.children )
     end
     alias  :on_begin :on_kwbegin
 
     # Array + Hashes
     def on_array expression
-      Vool::ArrayStatement.new expression.children.collect{ |elem| process(elem) }
+      ArrayStatement.new expression.children.collect{ |elem| process(elem) }
     end
 
     def on_hash expression
-      hash = Vool::HashStatement.new
+      hash = HashStatement.new
       expression.children.each do |elem|
         raise "Hash error, hash contains non pair: #{elem.type}" if elem.type != :pair
         hash.add( process(elem.children[0]) , process(elem.children[1]) )
@@ -117,15 +118,15 @@ module RubyX
 
     #Variables
     def on_lvar expression
-      Vool::LocalVariable.new(expression.children.first)
+      LocalVariable.new(expression.children.first)
     end
 
     def on_ivar expression
-      Vool::InstanceVariable.new(instance_name(expression.children.first))
+      InstanceVariable.new(instance_name(expression.children.first))
     end
 
     def on_cvar expression
-      Vool::ClassVariable.new(expression.children.first.to_s[2 .. -1].to_sym)
+      ClassVariable.new(expression.children.first.to_s[2 .. -1].to_sym)
     end
 
     def on_const expression
@@ -133,20 +134,20 @@ module RubyX
       if scope
         raise "Only unscoped Names implemented #{scope}" unless scope.type == :cbase
       end
-      Vool::ModuleName.new(expression.children[1])
+      ModuleName.new(expression.children[1])
     end
 
     # Assignements
     def on_lvasgn expression
       name = expression.children[0]
       value = process(expression.children[1])
-      Vool::LocalAssignment.new(name,value)
+      LocalAssignment.new(name,value)
     end
 
     def on_ivasgn expression
       name = expression.children[0]
       value = process(expression.children[1])
-      Vool::IvarAssignment.new(instance_name(name),value)
+      IvarAssignment.new(instance_name(name),value)
     end
 
     def on_op_asgn(expression)
@@ -161,52 +162,52 @@ module RubyX
 
     def on_return statement
       return_value = process(statement.children.first)
-      Vool::ReturnStatement.new( return_value )
+      ReturnStatement.new( return_value )
     end
 
     def on_while statement
       condition , statements = *statement
-      Vool::WhileStatement.new( process(condition) , process(statements))
+      WhileStatement.new( process(condition) , process(statements))
     end
 
     def on_if statement
       condition , if_true , if_false = *statement
       if_true = process(if_true)
       if_false = process(if_false)
-      Vool::IfStatement.new( process(condition) , if_true , if_false )
+      IfStatement.new( process(condition) , if_true , if_false )
     end
 
     def on_send statement
       kids = statement.children.dup
-      receiver = process(kids.shift) || Vool::SelfExpression.new
+      receiver = process(kids.shift) || SelfExpression.new
       name = kids.shift
       arguments = process_all(kids)
-      Vool::SendStatement.new( name , receiver , arguments )
+      SendStatement.new( name , receiver , arguments )
     end
 
     def on_and expression
       name = expression.type
       left = process(expression.children[0])
       right = process( expression.children[1] )
-      Vool::LogicalStatement.new( name , left , right)
+      LogicalStatement.new( name , left , right)
     end
     alias :on_or :on_and
 
     # this is a call to super without args (z = zero arity)
     def on_zsuper exp
-      Vool::SendStatement.new( nil , Vool::SuperExpression.new , nil)
+      SendStatement.new( nil , SuperExpression.new , nil)
     end
 
     # this is a call to super with args and
     # same name as current method, which is set later
     def on_super( statement )
       arguments = process_all(statement.children)
-      Vool::SendStatement.new( nil , Vool::SuperExpression.new , arguments)
+      SendStatement.new( nil , SuperExpression.new , arguments)
     end
 
     def on_assignment statement
       name , value = *statement
-      w = Vool::Assignment.new()
+      w = Assignment.new()
       w.name = process name
       w.value = process(value)
       w
diff --git a/lib/ruby/send_statement.rb b/lib/ruby/send_statement.rb
new file mode 100644
index 00000000..b97ae46e
--- /dev/null
+++ b/lib/ruby/send_statement.rb
@@ -0,0 +1,39 @@
+module Ruby
+
+  class SendStatement < Statement
+    attr_reader :name , :receiver , :arguments
+
+    def initialize(name , receiver , arguments )
+      @name , @receiver , @arguments = name , receiver , arguments
+      @arguments ||= []
+    end
+
+    def normalize
+      statements = Statements.new([])
+      arguments = []
+      @arguments.each_with_index do |arg , index |
+        normalize_arg(arg , arguments , statements)
+      end
+      if statements.empty?
+        return SendStatement.new(@name, @receiver , @arguments)
+      else
+        statements << SendStatement.new(@name, @receiver , arguments)
+        return statements
+      end
+    end
+
+    def normalize_arg(arg , arguments , statements)
+      if arg.respond_to?(:slot_definition) and !arg.is_a?(SendStatement)
+        arguments << arg
+        return
+      end
+      assign = LocalAssignment.new( "tmp_#{arg.object_id}".to_sym, arg)
+      statements << assign
+      arguments << LocalVariable.new(assign.name)
+    end
+
+    def to_s
+      "#{receiver}.#{name}(#{arguments.join(', ')})"
+    end
+  end
+end
diff --git a/lib/ruby/statement.rb b/lib/ruby/statement.rb
new file mode 100644
index 00000000..de21ccbc
--- /dev/null
+++ b/lib/ruby/statement.rb
@@ -0,0 +1,25 @@
+module Ruby
+
+  # Base class for all statements in the tree. Derived classes correspond to known language
+  # constructs
+  #
+  # Compilers or compiler passes are written by implementing methods.
+  #
+  class Statement
+
+    def at_depth(depth , *strings)
+      prefix = " " * 2 * depth
+      strings.collect{|str| prefix + str}.join("\n")
+    end
+
+  end
+
+  class Expression
+
+    def normalize
+      raise "should not be normalized #{self}"
+    end
+
+  end
+
+end
diff --git a/lib/ruby/statements.rb b/lib/ruby/statements.rb
new file mode 100644
index 00000000..5a0e6c15
--- /dev/null
+++ b/lib/ruby/statements.rb
@@ -0,0 +1,55 @@
+module Ruby
+  class Statements < Statement
+    attr_reader :statements
+    def initialize(statements)
+      @statements = statements
+    end
+
+    def empty?
+      @statements.empty?
+    end
+    def single?
+      @statements.length == 1
+    end
+    def first
+      @statements.first
+    end
+    def last
+      @statements.last
+    end
+    def length
+      @statements.length
+    end
+    def [](i)
+      @statements[i]
+    end
+    def <<(o)
+      @statements << o
+      self
+    end
+
+    # create mom instructions
+    def to_mom( compiler )
+      raise "Empty list ? #{statements.length}" if empty?
+      stats = @statements.dup
+      flat = stats.shift.to_mom(compiler)
+      while( nekst = stats.shift )
+        flat.append nekst.to_mom(compiler)
+      end
+      flat
+    end
+
+    def each(&block)
+      block.call(self)
+      @statements.each{|a| a.each(&block)}
+    end
+
+    def to_s(depth = 0)
+      at_depth(depth , *@statements.collect{|st| st.to_s(depth)})
+    end
+
+  end
+
+  class ScopeStatement < Statements
+  end
+end
diff --git a/lib/ruby/while_statement.rb b/lib/ruby/while_statement.rb
new file mode 100644
index 00000000..31f75b36
--- /dev/null
+++ b/lib/ruby/while_statement.rb
@@ -0,0 +1,24 @@
+require_relative "normalizer"
+
+module Ruby
+  class WhileStatement < Statement
+    include Normalizer
+    attr_reader :condition , :body , :hoisted
+
+    def initialize( condition , body , hoisted = nil)
+      @hoisted = hoisted
+      @condition = condition
+      @body = body
+    end
+
+    def normalize
+      cond , rest = *normalize_name(@condition)
+      WhileStatement.new(cond , @body.normalize , rest)
+    end
+
+    def to_s(depth = 0)
+      at_depth(depth , "while (#{@condition})" , @body.to_s(depth + 1) , "end" )
+    end
+
+  end
+end
diff --git a/lib/ruby/yield_statement.rb b/lib/ruby/yield_statement.rb
new file mode 100644
index 00000000..d8b44e6f
--- /dev/null
+++ b/lib/ruby/yield_statement.rb
@@ -0,0 +1,39 @@
+module Ruby
+
+  class YieldStatement < Statement
+    attr_reader :arguments
+
+    def initialize(arguments   )
+      @arguments = arguments
+      @arguments ||= []
+    end
+
+    def normalize
+      statements = Statements.new([])
+      arguments = []
+      @arguments.each_with_index do |arg , index |
+        normalize_arg(arg , arguments , statements)
+      end
+      if statements.empty?
+        return YieldStatement.new(@name, @receiver , @arguments)
+      else
+        statements << YieldStatement.new(@name, @receiver , arguments)
+        return statements
+      end
+    end
+
+    def normalize_arg(arg , arguments , statements)
+      if arg.respond_to?(:slot_definition) and !arg.is_a?(YieldStatement)
+        arguments << arg
+        return
+      end
+      assign = LocalAssignment.new( "tmp_#{arg.object_id}".to_sym, arg)
+      statements << assign
+      arguments << LocalVariable.new(assign.name)
+    end
+
+    def to_s
+      "#{receiver}.#{name}(#{arguments.join(', ')})"
+    end
+  end
+end
diff --git a/test/ruby/helper.rb b/test/ruby/helper.rb
new file mode 100644
index 00000000..6ce5e69a
--- /dev/null
+++ b/test/ruby/helper.rb
@@ -0,0 +1,17 @@
+require_relative "../helper"
+
+module Ruby
+  module RubyTests
+    def setup
+      Parfait.boot!
+    end
+    def compile(input)
+      RubyCompiler.compile(input)
+    end
+
+    def ruby_to_vool(input)
+      RubyXCompiler.new(input).ruby_to_vool
+    end
+
+  end
+end
diff --git a/test/rubyx/ruby_compiler/test_array_statement.rb b/test/ruby/test_array_statement.rb
similarity index 97%
rename from test/rubyx/ruby_compiler/test_array_statement.rb
rename to test/ruby/test_array_statement.rb
index 4951ba77..964b2998 100644
--- a/test/rubyx/ruby_compiler/test_array_statement.rb
+++ b/test/ruby/test_array_statement.rb
@@ -1,6 +1,6 @@
 require_relative "helper"
 
-module Vool
+module Ruby
   class TestArrayX < MiniTest::Test
     include RubyTests
 
diff --git a/test/rubyx/ruby_compiler/test_basic_values.rb b/test/ruby/test_basic_values.rb
similarity index 99%
rename from test/rubyx/ruby_compiler/test_basic_values.rb
rename to test/ruby/test_basic_values.rb
index 78d1a108..90531250 100644
--- a/test/rubyx/ruby_compiler/test_basic_values.rb
+++ b/test/ruby/test_basic_values.rb
@@ -1,6 +1,6 @@
 require_relative "helper"
 
-module Vool
+module Ruby
   class TestBasicValuesX < MiniTest::Test
     include RubyTests
 
diff --git a/test/rubyx/ruby_compiler/test_block_statement.rb b/test/ruby/test_block_statement.rb
similarity index 98%
rename from test/rubyx/ruby_compiler/test_block_statement.rb
rename to test/ruby/test_block_statement.rb
index 612afa3a..072d1eb1 100644
--- a/test/rubyx/ruby_compiler/test_block_statement.rb
+++ b/test/ruby/test_block_statement.rb
@@ -1,6 +1,6 @@
 require_relative "helper"
 
-module Vool
+module Ruby
   class TestBlockStatementX < MiniTest::Test
     include RubyTests
 
diff --git a/test/rubyx/ruby_compiler/test_class_statement.rb b/test/ruby/test_class_statement.rb
similarity index 98%
rename from test/rubyx/ruby_compiler/test_class_statement.rb
rename to test/ruby/test_class_statement.rb
index f4e61672..839f5171 100644
--- a/test/rubyx/ruby_compiler/test_class_statement.rb
+++ b/test/ruby/test_class_statement.rb
@@ -1,6 +1,6 @@
 require_relative "helper"
 
-module Vool
+module Ruby
   class TestEmptyClassStatementX < MiniTest::Test
     include RubyTests
 
diff --git a/test/rubyx/ruby_compiler/test_hash_statement.rb b/test/ruby/test_hash_statement.rb
similarity index 98%
rename from test/rubyx/ruby_compiler/test_hash_statement.rb
rename to test/ruby/test_hash_statement.rb
index 841e5935..cb1837cc 100644
--- a/test/rubyx/ruby_compiler/test_hash_statement.rb
+++ b/test/ruby/test_hash_statement.rb
@@ -1,6 +1,6 @@
 require_relative "helper"
 
-module Vool
+module Ruby
   class HashArrayX < MiniTest::Test
     include RubyTests
 
diff --git a/test/rubyx/ruby_compiler/test_if_statement.rb b/test/ruby/test_if_statement.rb
similarity index 99%
rename from test/rubyx/ruby_compiler/test_if_statement.rb
rename to test/ruby/test_if_statement.rb
index cea64c66..25346813 100644
--- a/test/rubyx/ruby_compiler/test_if_statement.rb
+++ b/test/ruby/test_if_statement.rb
@@ -1,6 +1,6 @@
 require_relative 'helper'
 
-module Vool
+module Ruby
   class TestIfStatementX < MiniTest::Test
     include RubyTests
 
diff --git a/test/rubyx/ruby_compiler/test_ivar_assignment.rb b/test/ruby/test_ivar_assignment.rb
similarity index 98%
rename from test/rubyx/ruby_compiler/test_ivar_assignment.rb
rename to test/ruby/test_ivar_assignment.rb
index ddabfab7..e5597e6c 100644
--- a/test/rubyx/ruby_compiler/test_ivar_assignment.rb
+++ b/test/ruby/test_ivar_assignment.rb
@@ -1,6 +1,6 @@
 require_relative "helper"
 
-module Vool
+module Ruby
   class TestIvarAssignmentX < MiniTest::Test
     include RubyTests
 
diff --git a/test/rubyx/ruby_compiler/test_local_assignment.rb b/test/ruby/test_local_assignment.rb
similarity index 98%
rename from test/rubyx/ruby_compiler/test_local_assignment.rb
rename to test/ruby/test_local_assignment.rb
index dea8fa9c..ba361ada 100644
--- a/test/rubyx/ruby_compiler/test_local_assignment.rb
+++ b/test/ruby/test_local_assignment.rb
@@ -1,6 +1,6 @@
 require_relative "helper"
 
-module Vool
+module Ruby
   class TestLocalAssignmentX < MiniTest::Test
     include RubyTests
 
diff --git a/test/rubyx/ruby_compiler/test_logical_statement.rb b/test/ruby/test_logical_statement.rb
similarity index 98%
rename from test/rubyx/ruby_compiler/test_logical_statement.rb
rename to test/ruby/test_logical_statement.rb
index 860ff52d..6d865f67 100644
--- a/test/rubyx/ruby_compiler/test_logical_statement.rb
+++ b/test/ruby/test_logical_statement.rb
@@ -1,6 +1,6 @@
 require_relative "helper"
 
-module Vool
+module Ruby
   class TestLogicalX < MiniTest::Test
     include RubyTests
 
diff --git a/test/rubyx/ruby_compiler/test_method_statement.rb b/test/ruby/test_method_statement.rb
similarity index 98%
rename from test/rubyx/ruby_compiler/test_method_statement.rb
rename to test/ruby/test_method_statement.rb
index 528b95ad..90e507ef 100644
--- a/test/rubyx/ruby_compiler/test_method_statement.rb
+++ b/test/ruby/test_method_statement.rb
@@ -1,6 +1,6 @@
 require_relative "helper"
 
-module Vool
+module Ruby
   class TestMethodStatementX < MiniTest::Test
     include RubyTests
 
diff --git a/test/rubyx/ruby_compiler/test_op_assignment.rb b/test/ruby/test_op_assignment.rb
similarity index 98%
rename from test/rubyx/ruby_compiler/test_op_assignment.rb
rename to test/ruby/test_op_assignment.rb
index c888d473..9502da2f 100644
--- a/test/rubyx/ruby_compiler/test_op_assignment.rb
+++ b/test/ruby/test_op_assignment.rb
@@ -1,6 +1,6 @@
 require_relative "helper"
 
-module Vool
+module Ruby
   module OpAss
     def test_local_name
       assert_equal :foo , @lst.name
diff --git a/test/rubyx/ruby_compiler/test_return_statement.rb b/test/ruby/test_return_statement.rb
similarity index 97%
rename from test/rubyx/ruby_compiler/test_return_statement.rb
rename to test/ruby/test_return_statement.rb
index a7916c67..ce77601a 100644
--- a/test/rubyx/ruby_compiler/test_return_statement.rb
+++ b/test/ruby/test_return_statement.rb
@@ -1,6 +1,6 @@
 require_relative "helper"
 
-module Vool
+module Ruby
   class TestReturnStatementX < MiniTest::Test
     include RubyTests
 
diff --git a/test/rubyx/ruby_compiler/test_send_statement.rb b/test/ruby/test_send_statement.rb
similarity index 99%
rename from test/rubyx/ruby_compiler/test_send_statement.rb
rename to test/ruby/test_send_statement.rb
index 26e3433b..9f02c851 100644
--- a/test/rubyx/ruby_compiler/test_send_statement.rb
+++ b/test/ruby/test_send_statement.rb
@@ -1,6 +1,6 @@
 require_relative "helper"
 
-module Vool
+module Ruby
   class TestSendX < MiniTest::Test
     include RubyTests
 
diff --git a/test/rubyx/ruby_compiler/test_variables.rb b/test/ruby/test_variables.rb
similarity index 99%
rename from test/rubyx/ruby_compiler/test_variables.rb
rename to test/ruby/test_variables.rb
index f81c9cfb..4dffc1e7 100644
--- a/test/rubyx/ruby_compiler/test_variables.rb
+++ b/test/ruby/test_variables.rb
@@ -1,6 +1,6 @@
 require_relative "helper"
 
-module Vool
+module Ruby
   class TestVariablesX < MiniTest::Test
     include RubyTests
 
diff --git a/test/rubyx/ruby_compiler/test_while_statement.rb b/test/ruby/test_while_statement.rb
similarity index 98%
rename from test/rubyx/ruby_compiler/test_while_statement.rb
rename to test/ruby/test_while_statement.rb
index cc2995ba..9b4da818 100644
--- a/test/rubyx/ruby_compiler/test_while_statement.rb
+++ b/test/ruby/test_while_statement.rb
@@ -1,6 +1,6 @@
 require_relative 'helper'
 
-module Vool
+module Ruby
   class TestWhileStatementX < MiniTest::Test
     include RubyTests
 
diff --git a/test/rubyx/ruby_compiler/test_yield_statement.rb b/test/ruby/test_yield_statement.rb
similarity index 98%
rename from test/rubyx/ruby_compiler/test_yield_statement.rb
rename to test/ruby/test_yield_statement.rb
index 6a969199..3b45d8e1 100644
--- a/test/rubyx/ruby_compiler/test_yield_statement.rb
+++ b/test/ruby/test_yield_statement.rb
@@ -1,6 +1,6 @@
 require_relative "helper"
 
-module Vool
+module Ruby
   class TestYieldStatementX < MiniTest::Test
     include RubyTests
 
diff --git a/test/rubyx/ruby_compiler/helper.rb b/test/rubyx/ruby_compiler/helper.rb
deleted file mode 100644
index 2a02bafc..00000000
--- a/test/rubyx/ruby_compiler/helper.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-require_relative "../../helper"
-
-module Vool
-  module RubyTests
-    def compile(input)
-      RubyX::RubyCompiler.compile(input)
-    end
-  end
-end