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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/.
# Write out C++ enum definitions that represent the different event types.
#
# The events are defined in files provided as command-line arguments.
from __future__ import print_function
from mozparsers.shared_telemetry_utils import ParserError
from mozparsers import parse_events
import sys
import buildconfig
banner = """/* This file is auto-generated, see gen_event_enum.py. */
"""
file_header = """\
#ifndef mozilla_TelemetryEventEnums_h
#define mozilla_TelemetryEventEnums_h
#include <stdint.h>
namespace mozilla {
namespace Telemetry {
enum class EventID : uint32_t {\
"""
file_footer = """\
};
} // namespace mozilla
} // namespace Telemetry
#endif // mozilla_TelemetryEventEnums_h
"""
def main(output, *filenames):
# Load the events first.
events = []
for filename in filenames:
try:
batch = parse_events.load_events(filename, True)
events.extend(batch)
except ParserError as ex:
print("\nError processing %s:\n%s\n" % (filename, str(ex)), file=sys.stderr)
sys.exit(1)
grouped = dict()
index = 0
for e in events:
category = e.category
if category not in grouped:
grouped[category] = []
grouped[category].append((index, e))
index += len(e.enum_labels)
# Write the enum file.
print(banner, file=output)
print(file_header, file=output)
for category, indexed in sorted(grouped.items()):
category_cpp = indexed[0][1].category_cpp
print(" // category: %s" % category, file=output)
for event_index, e in indexed:
if e.record_on_os(buildconfig.substs["OS_TARGET"]):
for offset, label in enumerate(e.enum_labels):
print(
" %s_%s = %d," % (category_cpp, label, event_index + offset),
file=output,
)
print(" // meta", file=output)
print(" EventCount = %d," % index, file=output)
print(file_footer, file=output)
if __name__ == "__main__":
main(sys.stdout, *sys.argv[1:])
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