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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 https://mozilla.org/MPL/2.0/.
"""
This script parses mozilla-central's EventNameList.h and writes a JSON-formatted equivalent
in order to guess if a DOM Event name is implemented by Gecko:
"devtools/server/event-list.json"
Run this script via
> ./mach python devtools/server/GenerateEventListFromHeaders.py dom/events/EventNameList.h
"""
import json
import re
import sys
def main(output_file, event_name_list_h):
events = []
with open(event_name_list_h, encoding="utf8") as f:
text = f.read()
# Match all lines following this syntax:
# xxx_EVENT(name, message, type, struct)
#
# "type" may include logical expression like "(EventNameType_HTMLXUL | EventNameType_SVGSVG)"
matches = re.findall(
r"^((\w+)?EVENT)\((\w+),\s+(\w+),\s+([(\\|\) \w]+),\s+(\w+)\)",
text,
re.MULTILINE,
)
for category, _, name, message, type, struct in matches:
events.append(name)
output_file.write(json.dumps(events, indent=2, sort_keys=True))
print("Successfully generated event list for DevTools")
if __name__ == "__main__":
main(sys.stdout, sys.argv[1])
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