Mojo JS Bindings: add support for associative arrays (Mojo map type)

mojo/public/html/convert_amd_modules_to_html.py

 #!/usr/bin/env python
 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import argparse
 import sys
 import re
 
 IMPORT_TEMPLATE = '<link rel="import" href="/%s.html" as="%s" />'
@@ skipping 52 matching lines @@
     if state == "imports":
       m = import_regex.search(line)
       if m:
         module.imports.append(Import(RewritePathNames(m.group(1)), None))
         continue
       m = begin_body_regexp.search(line)
       if m:
         AddImportNames(module, m.group(1))
         state = "body"
         continue
-      raise Exception, "Unknown import declaration"
+      raise Exception, "Unknown import declaration:" + line
     if state == "body":
       if end_body_regexp.search(line):
         module.body = "\n".join(body_lines)
         return module
       body_lines.append(line)
       continue
     raise Exception, "Unknown parser state"
   raise Exception, "End of file reached with finding a module"
 
 def main():
   parser = argparse.ArgumentParser()
   parser.add_argument("--input")
   parser.add_argument("--output")
   args = parser.parse_args()
 
   module = None
   with open(args.input, "r") as input_file:
     module = Parse(input_file.read())
 
   with open(args.output, "w+") as output_file:
     output_file.write(Serialize(module))
 
   return 0
 
 if __name__ == "__main__":
   sys.exit(main())