move meta and boot class to parfait

just cosmetic, fixed requires but not code

lib/parfait/meta_class.rb

@@ -0,0 +1,57 @@
+module Virtual
+
+  # TODO : rethink - possibly needs to be a module to be mixed into Object
+  #
+  # class that acts like a class, but is really the object
+
+  # described in the ruby language book as the eigenclass, what you get with
+  # class MyClass
+  #     class << self        <--- this is called the eigenclass, or metaclass, and really is just
+  #     ....                              the class object but gives us the ability to use the
+  #                                       syntax as if it were a class
+  #                     PS: can't say i fancy the << self syntax and am considerernig adding a
+  #                         keyword for it, like meta
+  #                      In effect it is a very similar construct to   def self.function(...)
+  #                      So one could write               def meta.function(...) and thus define on the meta-class
+  class MetaClass < Object
+    # no name, nor nothing. as this is just the object really
+
+    def initialize(object)
+      super()
+      @functions = []
+      @me_self = object
+    end
+
+    # 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 "syserr " unless function.name.is_a? Symbol
+      @functions << function
+    end
+
+    def get_function name
+      name = name.to_sym
+      f = @functions.detect{ |f| f.name == name }
+      return f if f
+      if( @me_self == :Object )
+        puts "no function for :#{name} in Meta #{@me_self.inspect}"
+        return nil
+      else  #recurse up class hierachy unless we're at Object
+        return @me_self.context.object_space.get_or_create_class(@me_self.super_class).get_function name
+      end
+    end
+
+    # get the function and if not found, try superclasses. raise error if not found
+    def resolve_method name
+      fun = get_function name
+      # TODO THE BOOK says is class A derives from B , then the metaclass of A derives from the metaclass of B
+      # just get to it ! (and stop whimpering)
+      raise "Method not found #{name} , for #{inspect}" unless fun
+      fun
+    end
+
+    def to_s
+      "#{inspect} on #{@me_self}, #{@functions.length} functions"
+    end
+  end
+end