callable as base for yield and send

more yield tests

lib/vool/yield_statement.rb

@@ -3,8 +3,10 @@ module Vool
   class YieldStatement < Statement
     attr_reader :arguments
 
-    def initialize(arguments   )
+    def initialize(name , receiver , arguments)
       @arguments = arguments
+      @receiver = receiver
+      @name = name
       @arguments ||= []
     end
 
@@ -24,7 +26,7 @@ module Vool
     # - a SimpleCall,
     def to_mom( compiler )
       @parfait_block = @block.to_mom(compiler) if @block
-      @receiver = SelfExpression.new(compiler.self_type) if @receiver.is_a?(SelfExpression)
+      @receiver = SelfExpression.new(compiler.receiver_type) if @receiver.is_a?(SelfExpression)
       if(@receiver.ct_type)
         simple_call(compiler)
       else