The Tor Browser / file revision

 # This Source Code Form is subject to the terms of the Mozilla Public

 # License, v. 2.0. If a copy of the MPL was not distributed with this file,

 # You can obtain one at http://mozilla.org/MPL/2.0/.

 import sys

 import string

 propList = eval(sys.stdin.read())

 props = ""

 for [prop, id, flags, pref] in propList:

     extendedAttrs = ["Throws", "TreatNullAs=EmptyString"]

     # To limit the overhead of Func= annotations, we only generate them when

     # necessary, which is when the

     # CSS_PROPERTY_ALWAYS_ENABLED_IN_CHROME_OR_CERTIFIED_APP flag is set.

     # Otherwise, we try to get by with just a Pref= annotation or no annotation

     # at all.

     if "CSS_PROPERTY_ALWAYS_ENABLED_IN_CHROME_OR_CERTIFIED_APP" in flags:

         extendedAttrs.append('Func="IsCSSPropertyExposedToJS<eCSSProperty_%s>"' % id)

     # The following is an 'elif' because it is the responsibility of

     # IsCSSPropertyExposedToJS to handle the pref if there is one.

     elif pref is not "":

         extendedAttrs.append('Pref="%s"' % pref)

     if not prop.startswith("Moz"):

         prop = prop[0].lower() + prop[1:]

     # Unfortunately, even some of the getters here are fallible

     # (e.g. on nsComputedDOMStyle).

     props += "  [%s] attribute DOMString %s;\n" % (", ".join(extendedAttrs),

                                                    prop)

 idlFile = open(sys.argv[1], "r");

 idlTemplate = idlFile.read();

 idlFile.close();

 print ("/* THIS IS AN AUTOGENERATED FILE.  DO NOT EDIT */\n\n" +

        string.Template(idlTemplate).substitute({ "props": props }))