make positioned a helper module

lib/register/positioned.rb

@@ -1,30 +1,31 @@
 # Helper module that extract position attribute.
 module Positioned
-  @@positions = {}
+  @positions = {}
 
   def self.positions
-    @@positions
+    @positions
   end
 
-  def position
-    pos = Positioned.positions[self]
+  def self.position(object)
+    pos = self.positions[object]
     if pos == nil
       str = "position accessed but not set, "
-      str += "#{self.object_id.to_s(16)}\n"
-      raise str + "for #{self.class} byte_length #{self.byte_length if self.respond_to?(:byte_length)} for #{self.inspect[0...100]}"
+      str += "#{object.object_id.to_s(16)}\n"
+      raise str + "for #{object.class} byte_length #{object.byte_length if object.respond_to?(:byte_length)} for #{object.inspect[0...100]}"
     end
     pos
   end
-  def set_position( pos )
+
+  def self.set_position( object , pos )
     raise "Position must be number not :#{pos}:" unless pos.is_a?(Numeric)
     # resetting of position used to be error, but since relink and dynamic instruction size it is ok.
     # in measures (of 32)
     #puts "Setting #{pos} for #{self.class}"
-    old = Positioned.positions[self]
+    old = Positioned.positions[object]
     if old != nil and ((old - pos).abs > 10000)
-      raise "position set again #{pos}!=#{old} for #{self}"
+      raise "position set again #{pos}!=#{old} for #{object}"
     end
-    Positioned.positions[self] = pos
+    self.positions[object] = pos
   end