moved statements up one dir

lib/vool/return_statement.rb

@@ -0,0 +1,33 @@
+module Vool
+  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 each(&block)
+      block.call(@return_value)
+    end
+
+    # Since the return is normalized to only allow simple values it is simple.
+    # To return form a method in mom instructions we only need to do two things:
+    # - store the given return value, this is a SlotMove
+    # - activate return sequence (reinstantiate old message and jump to return address)
+    def to_mom( method )
+      ret = Mom::SlotLoad.new( [:message , :return_value] , @return_value.slot_definition(method) )
+      ret << Mom::ReturnSequence.new
+    end
+
+  end
+end