gecko-dev/toolkit/components/telemetry/gen_scalar_enum.py

65 строки
1.6 KiB
Python

# 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 a C++ enum definition whose members are the names of
# scalar types.
#
# The scalars are defined in files provided as command-line arguments.
from __future__ import print_function
from shared_telemetry_utils import ParserError
import sys
import parse_scalars
banner = """/* This file is auto-generated, see gen_scalar_enum.py. */
"""
file_header = """\
#ifndef mozilla_TelemetryScalarEnums_h
#define mozilla_TelemetryScalarEnums_h
namespace mozilla {
namespace Telemetry {
enum class ScalarID : uint32_t {\
"""
file_footer = """\
};
} // namespace mozilla
} // namespace Telemetry
#endif // mozilla_TelemetryScalarEnums_h
"""
def main(output, *filenames):
# Load the scalars first.
if len(filenames) > 1:
raise Exception('We don\'t support loading from more than one file.')
try:
scalars = parse_scalars.load_scalars(filenames[0])
except ParserError as ex:
print("\nError processing scalars:\n" + str(ex) + "\n")
sys.exit(1)
# Write the enum file.
print(banner, file=output)
print(file_header, file=output)
for s in scalars:
cpp_guard = s.cpp_guard
if cpp_guard:
print("#if defined(%s)" % cpp_guard, file=output)
print(" %s," % s.enum_label, file=output)
if cpp_guard:
print("#endif", file=output)
print(" ScalarCount,", file=output)
print(file_footer, file=output)
if __name__ == '__main__':
main(sys.stdout, *sys.argv[1:])