Experimental parser: remove match actions

tools/lexer_generator/dot_utilities.py

 # Copyright 2014 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 64 matching lines @@
   def f(node, (node_content, edge_content)):
     if node.action():
       action_text = escape_for_dot(node.action())
       node_content.append('  S_l%s[shape = box, label="%s"];' %
                           (node.node_number(), action_text))
       node_content.append('  S_%s -> S_l%s [arrowhead = none];' %
                           (node.node_number(), node.node_number()))
     for key, state in node.key_state_iter():
       if key == TransitionKey.epsilon():
         key = "ε"
+      elif key == TransitionKey.omega():
+        key = "ω"
       else:
         key = key.to_string(automaton.encoding())
       edge_content.append("  S_%s -> S_%s [ label = \"%s\" ];" % (
           node.node_number(), state.node_number(), escape_for_dot(key)))
     return (node_content, edge_content)
 
   (node_content, edge_content) = automaton.visit_all_states(f, ([], []))
 
   start_set = automaton.start_set()
   assert len(start_set) == 1
@@ skipping 13 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))