forked from mirrors/gecko-dev
81 lines
2.3 KiB
Python
81 lines
2.3 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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# Write out C++ enum definitions that represent the different event types.
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#
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# The events are defined in files provided as command-line arguments.
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from __future__ import print_function
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from shared_telemetry_utils import ParserError
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import sys
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import parse_events
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banner = """/* This file is auto-generated, see gen_event_enum.py. */
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"""
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file_header = """\
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#ifndef mozilla_TelemetryEventEnums_h
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#define mozilla_TelemetryEventEnums_h
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namespace mozilla {
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namespace Telemetry {
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namespace EventID {
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"""
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file_footer = """\
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} // namespace EventID
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} // namespace mozilla
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} // namespace Telemetry
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#endif // mozilla_TelemetryEventEnums_h
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"""
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def main(output, *filenames):
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# Load the events first.
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if len(filenames) > 1:
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raise Exception('We don\'t support loading from more than one file.')
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try:
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events = parse_events.load_events(filenames[0], True)
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except ParserError as ex:
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print("\nError processing events:\n" + str(ex) + "\n")
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sys.exit(1)
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grouped = dict()
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index = 0
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for e in events:
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category = e.category
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if category not in grouped:
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grouped[category] = []
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grouped[category].append((index, e))
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index += len(e.enum_labels)
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# Write the enum file.
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print(banner, file=output)
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print(file_header, file=output)
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for category, indexed in grouped.iteritems():
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category_cpp = indexed[0][1].category_cpp
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print("// category: %s" % category, file=output)
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print("enum class %s : uint32_t {" % category_cpp, file=output)
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for event_index, e in indexed:
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cpp_guard = e.cpp_guard
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if cpp_guard:
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print("#if defined(%s)" % cpp_guard, file=output)
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for offset, label in enumerate(e.enum_labels):
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print(" %s = %d," % (label, event_index + offset), file=output)
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if cpp_guard:
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print("#endif", file=output)
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print("};\n", file=output)
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print("const uint32_t EventCount = %d;\n" % index, file=output)
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print(file_footer, file=output)
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if __name__ == '__main__':
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main(sys.stdout, *sys.argv[1:])
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