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#!/usr/bin/env python3
# Copyright 2020 The Pigweed Authors
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.
"""Updates pw::Status usages from Status::CODE to Status::Code() style.
Also updates StatusWithSize.
"""
import argparse
from pathlib import Path
import re
import sys
from typing import Iterable
from pw_presubmit import git_repo
_REMAP = {
'OK': 'Ok',
'CANCELLED': 'Cancelled',
'UNKNOWN': 'Unknown',
'INVALID_ARGUMENT': 'InvalidArgument',
'DEADLINE_EXCEEDED': 'DeadlineExceeded',
'NOT_FOUND': 'NotFound',
'ALREADY_EXISTS': 'AlreadyExists',
'PERMISSION_DENIED': 'PermissionDenied',
'UNAUTHENTICATED': 'Unauthenticated',
'RESOURCE_EXHAUSTED': 'ResourceExhausted',
'FAILED_PRECONDITION': 'FailedPrecondition',
'ABORTED': 'Aborted',
'OUT_OF_RANGE': 'OutOfRange',
'UNIMPLEMENTED': 'Unimplemented',
'INTERNAL': 'Internal',
'UNAVAILABLE': 'Unavailable',
'DATA_LOSS': 'DataLoss',
}
_CODES = '|'.join(_REMAP.keys())
_FUNCTIONS = '|'.join(_REMAP.values())
_STATUS_WITH_SIZE_CTOR = re.compile(
fr'\bStatusWithSize\(Status::({_CODES}),\s*'.encode())
_STATUS = re.compile(fr'\b(Status|StatusWithSize)::({_CODES})(?!")\b'.encode())
_STATUS_EQUALITY = re.compile(
fr'Status::(?P<l_func>{_FUNCTIONS})\(\)\s+==\s+(?P<value>[a-zA-Z0-9_.()]+)|'
fr'\s+==\s+(?:pw::)?Status::(?P<r_func>{_FUNCTIONS})\(\)'.encode())
def _remap_status_with_size(match) -> bytes:
return f'StatusWithSize::{_REMAP[match.group(1).decode()]}('.encode()
def _remap_codes(match) -> bytes:
status, code = (g.decode() for g in match.groups())
return f'{status}::{_REMAP[code]}()'.encode()
def _remap_equality(match) -> bytes:
l_func, status, r_func = (g.decode() for g in match.groups(b''))
func = l_func or r_func
return (f'{status}.ok()'
if func == 'Ok' else f'{status}.Is{func}()').encode()
def _parse_args():
"""Parses and return command line arguments."""
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('paths',
nargs='*',
type=Path,
help='Paths to repositories')
return parser.parse_args()
def update_status(paths: Iterable[Path]) -> None:
if not paths:
paths = [Path.cwd()]
for path in paths:
if git_repo.has_uncommitted_changes(path):
raise RuntimeError('There are pending changes in the Git repo!')
updated = 0
for file in git_repo.list_files(pathspecs=('*.h', '*.cc', '*.cpp'),
repo_path=path):
orig = file.read_bytes()
# Replace StatusWithSize constructor
text = _STATUS_WITH_SIZE_CTOR.sub(_remap_status_with_size, orig)
# Replace Status and StatusWithSize
text = _STATUS.sub(_remap_codes, text)
text = _STATUS_EQUALITY.sub(_remap_equality, text)
if orig != text:
updated += 1
file.write_bytes(text)
print('Updated', updated, 'files.')
print('Manually inspect the changes! This script is not perfect.')
def main():
return update_status(**vars(_parse_args()))
if __name__ == '__main__':
sys.exit(main())
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