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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 UserInteraction information for C++. The UserInteractions are
# defined in a file provided as a command-line argument.
import sys
from os import path
from mozparsers import parse_user_interactions
from mozparsers.shared_telemetry_utils import ParserError, static_assert
COMPONENTS_PATH = path.abspath(
path.join(path.dirname(__file__), path.pardir, path.pardir)
)
sys.path.append(
path.join(COMPONENTS_PATH, "glean", "build_scripts", "glean_parser_ext")
)
import sys
from string_table import StringTable
# The banner/text at the top of the generated file.
banner = """/* This file is auto-generated, only for internal use in
TelemetryUserInteraction.h, see gen_userinteraction_data.py. */
"""
file_header = """\
#ifndef mozilla_TelemetryUserInteractionData_h
#define mozilla_TelemetryUserInteractionData_h
#include "core/UserInteractionInfo.h"
"""
file_footer = """\
#endif // mozilla_TelemetryUserInteractionData_h
"""
def write_user_interaction_table(user_interactions, output, string_table):
head = """
namespace mozilla {
namespace Telemetry {
namespace UserInteractionID {
const static uint32_t UserInteractionCount = %d;
} // namespace UserInteractionID
} // namespace Telemetry
} // namespace mozilla
"""
print(head % len(user_interactions), file=output)
print("namespace {", file=output)
table_name = "gUserInteractions"
print("constexpr UserInteractionInfo %s[] = {" % table_name, file=output)
for u in user_interactions:
name_index = string_table.stringIndex(u.label)
print(" UserInteractionInfo({}),".format(name_index), file=output)
print("};", file=output)
static_assert(
output,
"sizeof(%s) <= UINT32_MAX" % table_name,
"index overflow of UserInteractionInfo table %s" % table_name,
)
print("} // namespace", file=output)
def main(output, *filenames):
# Load the UserInteraction data.
user_interactions = []
for filename in filenames:
try:
batch = parse_user_interactions.load_user_interactions(filename)
user_interactions.extend(batch)
except ParserError as ex:
print("\nError processing %s:\n%s\n" % (filename, str(ex)), file=sys.stderr)
sys.exit(1)
# Write the scalar data file.
print(banner, file=output)
print(file_header, file=output)
string_table = StringTable()
# Write the data for individual UserInteractions.
write_user_interaction_table(user_interactions, output, string_table)
print("", file=output)
# Write the string table.
string_table_name = "gUserInteractionsStringTable"
string_table.writeDefinition(output, string_table_name)
static_assert(
output, "sizeof(%s) <= UINT32_MAX" % string_table_name, "index overflow"
)
print("", file=output)
print(file_footer, file=output)
if __name__ == "__main__":
main(sys.stdout, *sys.argv[1:])
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