layout/style/GenerateCSSPropertyID.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
   3 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   4
   5 import runpy
   6 import string
   7
   8
   9 def generate(output, template, dataFile):
  10     with open(template, "r") as f:
  11         template = string.Template(f.read())
  12     data = runpy.run_path(dataFile)["data"]
  13
  14     longhand_count = 0
  15     shorthand_count = 0
  16     alias_count = 0
  17     property_ids = []
  18     for prop in data.values():
  19         if prop.type() != "alias":
  20             if prop.type() == "longhand":
  21                 assert shorthand_count == 0
  22                 longhand_count += 1
  23             else:
  24                 assert alias_count == 0
  25                 shorthand_count += 1
  26             property_ids.append("eCSSProperty_{}".format(prop.id))
  27         else:
  28             alias_count += 1
  29             property_ids.append("eCSSPropertyAlias_{}".format(prop.alias_id))
  30
  31     output.write("/* THIS IS AN AUTOGENERATED FILE.  DO NOT EDIT */\n\n")
  32     output.write(
  33         template.substitute(
  34             {
  35                 "property_ids": "\n".join("  {},".format(p) for p in property_ids),
  36                 "longhand_count": property_ids[longhand_count],
  37                 "shorthand_count": property_ids[longhand_count + shorthand_count],
  38             }
  39         )
  40     )