dom/bindings/GenerateCSS2PropertiesWebIDL.py

   1 # This Source Code Form is subject to the terms of the Mozilla Public
   2 # License, v. 2.0. If a copy of the MPL was not distributed with this file,
   3 # You can obtain one at http://mozilla.org/MPL/2.0/.
   4
   5 import sys
   6 import string
   7
   8 propList = eval(sys.stdin.read())
   9 props = ""
  10 for [prop, id, flags, pref] in propList:
  11     extendedAttrs = ["Throws", "TreatNullAs=EmptyString"]
  12     # To limit the overhead of Func= annotations, we only generate them when
  13     # necessary, which is when the
  14     # CSS_PROPERTY_ALWAYS_ENABLED_IN_CHROME_OR_CERTIFIED_APP flag is set.
  15     # Otherwise, we try to get by with just a Pref= annotation or no annotation
  16     # at all.
  17     if "CSS_PROPERTY_ALWAYS_ENABLED_IN_CHROME_OR_CERTIFIED_APP" in flags:
  18         extendedAttrs.append('Func="IsCSSPropertyExposedToJS<eCSSProperty_%s>"' % id)
  19     # The following is an 'elif' because it is the responsibility of
  20     # IsCSSPropertyExposedToJS to handle the pref if there is one.
  21     elif pref is not "":
  22         extendedAttrs.append('Pref="%s"' % pref)
  23     if not prop.startswith("Moz"):
  24         prop = prop[0].lower() + prop[1:]
  25     # Unfortunately, even some of the getters here are fallible
  26     # (e.g. on nsComputedDOMStyle).
  27     props += "  [%s] attribute DOMString %s;\n" % (", ".join(extendedAttrs),
  28                                                    prop)
  29
  30 idlFile = open(sys.argv[1], "r");
  31 idlTemplate = idlFile.read();
  32 idlFile.close();
  33
  34 print ("/* THIS IS AN AUTOGENERATED FILE.  DO NOT EDIT */\n\n" +
  35        string.Template(idlTemplate).substitute({ "props": props }))