fold last of the virtual into register

lib/parfait/meta_class.rb

@@ -24,7 +24,7 @@ module Parfait
 
     # in a non-booting version this should map to _add_singleton_method
     # def add_function function
-    #   raise "not a function #{function}" unless function.is_a? Virtual::Function
+    #   raise "not a function #{function}" unless function.is_a? Register::Function
     #   raise "syserr " unless function.name.is_a? Symbol
     #   self.functions << function
     # end

lib/parfait/method.rb

@@ -13,7 +13,7 @@ module Parfait
   # known local variable names
   # executable code
 
-  # ps, the compiler injects its own info, see Virtual::MethodSource
+  # ps, the compiler injects its own info, see Register::MethodSource
 
 
   class Method < Object

lib/parfait/variable.rb

@@ -2,7 +2,7 @@ module Parfait
   class Variable < Object
 
     def initialize type , name , value = nil
-      raise "not type #{type}" unless Virtual.machine.space.get_class_by_name(type)
+      raise "not type #{type}" unless Register.machine.space.get_class_by_name(type)
       self.type , self.name , self.value = type , name , value
       self.value = 0 if self.type == :Integer and value == nil
       raise "must give name for variable" unless name

lib/parfait/word.rb

@@ -16,7 +16,7 @@ module Parfait
   class Word < Object
     # initialize with length. For now we try to keep all non-parfait (including String) out
     # String will contain spaces for non-zero length
-    # Virtual provides methods to create Parfait objects from ruby
+    # Register provides methods to create Parfait objects from ruby
     def initialize len
       super()
       raise "Must init with int, not #{len.class}" unless len.kind_of? Fixnum