gecko-dev/layout/style/GenerateCSSPropertyID.py

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Python
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# 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 runpy
import string
def generate(output, template, dataFile):
with open(template, "r") as f:
template = string.Template(f.read())
data = runpy.run_path(dataFile)["data"]
longhand_count = 0
shorthand_count = 0
alias_count = 0
property_ids = []
for prop in data:
if prop.type() != "alias":
if prop.type() == "longhand":
assert shorthand_count == 0
longhand_count += 1
else:
assert alias_count == 0
shorthand_count += 1
property_ids.append("eCSSProperty_{}".format(prop.id))
else:
alias_count += 1
property_ids.append("eCSSPropertyAlias_{}".format(prop.alias_id))
output.write("/* THIS IS AN AUTOGENERATED FILE. DO NOT EDIT */\n\n")
output.write(template.substitute({
"property_ids": "\n".join(" {},".format(p) for p in property_ids),
"longhand_count": property_ids[longhand_count],
"shorthand_count": property_ids[longhand_count + shorthand_count],
}))