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#!/usr/bin/env python3
#
# Copyright (c) 2020-2022 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
#
# Check for circular dependencies
import os
import re
import subprocess
import sys
EXPECTED_CIRCULAR_DEPENDENCIES = (
"chainparamsbase -> util/system -> chainparamsbase",
"node/blockstorage -> validation -> node/blockstorage",
"node/utxo_snapshot -> validation -> node/utxo_snapshot",
"policy/fees -> txmempool -> policy/fees",
"qt/addresstablemodel -> qt/walletmodel -> qt/addresstablemodel",
"qt/recentrequeststablemodel -> qt/walletmodel -> qt/recentrequeststablemodel",
"qt/sendcoinsdialog -> qt/walletmodel -> qt/sendcoinsdialog",
"qt/transactiontablemodel -> qt/walletmodel -> qt/transactiontablemodel",
"wallet/fees -> wallet/wallet -> wallet/fees",
"wallet/wallet -> wallet/walletdb -> wallet/wallet",
"kernel/coinstats -> validation -> kernel/coinstats",
"kernel/mempool_persist -> validation -> kernel/mempool_persist",
# Temporary, removed in followup https://github.com/bitcoin/bitcoin/pull/24230
"index/base -> node/context -> net_processing -> index/blockfilterindex -> index/base",
)
CODE_DIR = "src"
def main():
circular_dependencies = []
exit_code = 0
os.chdir(CODE_DIR)
files = subprocess.check_output(
['git', 'ls-files', '--', '*.h', '*.cpp'],
universal_newlines=True,
).splitlines()
command = [sys.executable, "../contrib/devtools/circular-dependencies.py", *files]
dependencies_output = subprocess.run(
command,
stdout=subprocess.PIPE,
universal_newlines=True,
)
for dependency_str in dependencies_output.stdout.rstrip().split("\n"):
circular_dependencies.append(
re.sub("^Circular dependency: ", "", dependency_str)
)
# Check for an unexpected dependencies
for dependency in circular_dependencies:
if dependency not in EXPECTED_CIRCULAR_DEPENDENCIES:
exit_code = 1
print(
f'A new circular dependency in the form of "{dependency}" appears to have been introduced.\n',
file=sys.stderr,
)
# Check for missing expected dependencies
for expected_dependency in EXPECTED_CIRCULAR_DEPENDENCIES:
if expected_dependency not in circular_dependencies:
exit_code = 1
print(
f'Good job! The circular dependency "{expected_dependency}" is no longer present.',
)
print(
f"Please remove it from EXPECTED_CIRCULAR_DEPENDENCIES in {__file__}",
)
print(
"to make sure this circular dependency is not accidentally reintroduced.\n",
)
sys.exit(exit_code)
if __name__ == "__main__":
main()
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