callable as base for yield and send

more yield tests

lib/ruby/send_statement.rb

@@ -1,37 +1,6 @@
 module Ruby
 
-  class SendStatement < Statement
-    attr_reader :name , :receiver , :arguments
-
-    def initialize(name , receiver , arguments )
-      @name , @receiver , @arguments = name , receiver , arguments
-      @arguments ||= []
-    end
-
-    def to_vool
-      statements = Vool::Statements.new([])
-      arguments = []
-      @arguments.each_with_index do |arg , index |
-        normalize_arg(arg , arguments , statements)
-      end
-      if statements.empty?
-        return Vool::SendStatement.new(@name, @receiver.to_vool , arguments)
-      else
-        statements << Vool::SendStatement.new(@name, @receiver.to_vool , arguments)
-        return statements
-      end
-    end
-
-    def normalize_arg(arg , arguments , statements)
-      if arg.is_a?(Constant) and !arg.is_a?(SendStatement)
-        arguments << arg.to_vool
-        return
-      end
-      assign = Vool::LocalAssignment.new( "tmp_#{arg.object_id}".to_sym, arg.to_vool)
-      statements << assign
-      arguments << Vool::LocalVariable.new(assign.name)
-    end
-
+  class SendStatement < Callable
     def to_s
       "#{receiver}.#{name}(#{arguments.join(', ')})"
     end