IDL parser: fix rebuilding of (stale) cached lexer tables

Source/bindings/scripts/blink_idl_parser.py

 # Copyright (C) 2013 Google Inc. 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
@@ skipping 53 matching lines @@
 sys.path.insert(1, third_party)
 from ply import yacc
 
 # Base parser is in Chromium src/tools/idl_parser
 tools_dir = os.path.join(module_path, os.pardir, os.pardir, os.pardir, os.pardir, os.pardir, 'tools')
 sys.path.append(tools_dir)
 from idl_parser.idl_parser import IDLParser, ListFromConcat
 from idl_parser.idl_parser import ParseFile as parse_file
 
 from blink_idl_lexer import BlinkIDLLexer
+import blink_idl_lexer
 
 
 # Explicitly set starting symbol to rule defined only in base parser.
 # BEWARE that the starting symbol should NOT be defined in both the base parser
 # and the derived one, as otherwise which is used depends on which line number
 # is lower, which is fragile. Instead, either use one in base parser or
 # create a new symbol, so that this is unambiguous.
 # FIXME: unfortunately, this doesn't work in PLY 3.4, so need to duplicate the
 # rule below.
 STARTING_SYMBOL = 'Definitions'
@@ skipping 349 matching lines @@
         self._parse_errors = 0
         self._parse_warnings = 0
         self._last_error_msg = None
         self._last_error_lineno = 0
         self._last_error_pos = 0
 
 
 ################################################################################
 
 def main(argv):
-    # If file itself executed, cache parse table
+    # If file itself executed, cache lex/parse tables
     try:
         outputdir = argv[1]
     except IndexError as err:
         print 'Usage: %s OUTPUT_DIR' % argv[0]
         return 1
+    blink_idl_lexer.main(argv)
     # Important: rewrite_tables=True causes the cache file to be deleted if it
     # exists, thus making sure that PLY doesn't load it instead of regenerating
     # the parse table.
     parser = BlinkIDLParser(outputdir=outputdir, rewrite_tables=True)
 
 
 if __name__ == '__main__':
     sys.exit(main(sys.argv))