Experimental parser: KeyEncoding class added

tools/lexer_generator/automaton.py

 # Copyright 2013 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 114 matching lines @@
         if not self.transitions_to_multiple_states():
           if state_filter(states):
             yield yield_func(key, states)
         else:
           for state in states:
             if state_filter(state):
               yield yield_func(key, state)
 
 class Automaton(object):
 
+  def __init__(self, encoding):
+    self.__encoding = encoding
+
+  def encoding(self):
+    return self.__encoding
+
   @staticmethod
   def visit_states(edge, visitor, visit_state = None, state_iter = None):
     if not state_iter:
       state_iter  = lambda node: node.state_iter()
     visited = set()
     while edge:
       next_edge_iters = []
       def f(visit_state, node):
         next_edge_iters.append(state_iter(node))
         return visitor(node, visit_state)
@@ skipping 90 matching lines @@
   node [shape = doublecircle, style=unfilled]; %s
   node [shape = circle];
 %s
 %s
 }
     ''' % (start_shape,
            start_number,
            " ".join(terminals),
            "\n".join(edge_content),
            "\n".join(node_content))