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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
import sys
import parse_events
banner = """/* This file is auto-generated, see gen-event-enum.py. */
"""
file_header = """\
#ifndef mozilla_TelemetryEventEnums_h
#define mozilla_TelemetryEventEnums_h
namespace mozilla {
namespace Telemetry {
namespace EventID {
"""
file_footer = """\
} // namespace EventID
} // namespace mozilla
} // namespace Telemetry
#endif // mozilla_TelemetryEventEnums_h
"""
def main(output, *filenames):
# Load the events first.
if len(filenames) > 1:
raise Exception('We don\'t support loading from more than one file.')
events = parse_events.load_events(filenames[0])
grouped = dict()
index = 0
for e in events:
category = e.category
if not category 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 grouped.iteritems():
category_cpp = indexed[0][1].category_cpp
print("// category: %s" % category, file=output)
print("enum class %s : uint32_t {" % category_cpp, file=output)
for event_index,e in indexed:
cpp_guard = e.cpp_guard
if cpp_guard:
print("#if defined(%s)" % cpp_guard, file=output)
for offset,label in enumerate(e.enum_labels):
print(" %s = %d," % (label, event_index + offset), file=output)
if cpp_guard:
print("#endif", file=output)
print("};\n", file=output)
print("const uint32_t EventCount = %d;\n" % index, file=output)
print(file_footer, file=output)
if __name__ == '__main__':
main(sys.stdout, *sys.argv[1:])
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