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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 processes data for C++. The processes are defined
# in a file provided as a command-line argument.
from __future__ import print_function
from mozparsers.shared_telemetry_utils import ParserError, load_yaml_file
import sys
import collections
# The banner/text at the top of the generated file.
banner = """/* This file is auto-generated from Telemetry build scripts,
see gen_process_enum.py. */
"""
file_header = """\
#ifndef mozilla_TelemetryProcessEnums_h
#define mozilla_TelemetryProcessEnums_h
namespace mozilla {
namespace Telemetry {
"""
file_footer = """
} // namespace Telemetry
} // namespace mozilla
#endif // mozilla_TelemetryProcessEnums_h"""
def to_enum_label(name):
return name.title().replace('_', '')
def write_processes_enum(processes, output):
def p(line):
print(line, file=output)
processes = collections.OrderedDict(processes)
p("enum class ProcessID : uint32_t {")
for i, (name, _) in enumerate(sorted(processes.items())):
p(" %s = %d," % (to_enum_label(name), i))
p(" Count = %d" % len(processes))
p("};")
def main(output, *filenames):
if len(filenames) > 1:
raise Exception('We don\'t support loading from more than one file.')
try:
processes = load_yaml_file(filenames[0])
# Write the process data file.
print(banner, file=output)
print(file_header, file=output)
write_processes_enum(processes, output)
print(file_footer, file=output)
except ParserError as ex:
print("\nError generating processes enums:\n" + str(ex) + "\n")
sys.exit(1)
if __name__ == '__main__':
main(sys.stdout, *sys.argv[1:])
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