move eventable to util and rename common to util

lib/risc/eventable.rb

@@ -1,37 +0,0 @@
-# A simple event registering/triggering module to mix into classes.
-# Events are stored in the `@events` ivar.
-module Eventable
-
-  # Risc a handler for the given event name.
-  # The event name is the method name called on the handler object
-  #
-  #   obj.on(:foo , some_object_that_implements foo( whateverargs)
-  #
-  # @param [String, Symbol] name event name
-  # @param [Object] object handling the event, ie implement the function name
-  # @return handler
-  def register_event(name, handler)
-    event_table[name] << handler
-    handler
-  end
-
-  def unregister_event(name, handler)
-    event_table[name].delete handler
-  end
-
-  def event_table
-    return @event_table if @event_table
-    @event_table = Hash.new { |hash, key| hash[key] = [] }
-  end
-
-  # Trigger the given event name and passes all args to each handler
-  # for this event.
-  #
-  #   obj.trigger(:foo)
-  #   obj.trigger(:foo, 1, 2, 3)
-  #
-  # @param [String, Symbol] name event name to trigger
-  def trigger(name, *args)
-    event_table[name].each { |handler| handler.send( name.to_sym , *args) }
-  end
-end

lib/risc/instruction.rb

@@ -1,4 +1,4 @@
-require "common/list"
+require "util/list"
 
 module Risc
 

lib/risc/interpreter.rb

@@ -1,5 +1,4 @@
-
-require_relative "eventable"
+require "util/eventable"
 
 module Risc