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# Copyright (c) 2018 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import os
import re
import sys
_REPO_PATH = os.path.dirname(os.path.realpath('__file__'))
_IMPORT_SUBFOLDERS = ['tools', os.path.join('buildtools', 'checkdeps')]
# git-cl upload is not compatible with __init__.py based subfolder imports, so
# we extend the system path instead.
sys.path.extend(os.path.join(_REPO_PATH, p) for p in _IMPORT_SUBFOLDERS)
import licenses
from checkdeps import DepsChecker
from cpp_checker import CppChecker
from rules import Rule
# Rather than pass this to all of the checks, we override the global excluded
# list with this one.
_EXCLUDED_PATHS = (
# Exclude all of third_party/ except for BUILD.gns that we maintain.
r'third_party[\\\/].*(?<!BUILD.gn)$',
# Exclude everything under third_party/chromium_quic/{src|build}
r'third_party/chromium_quic/(src|build)/.*',
# Output directories (just in case)
r'.*\bDebug[\\\/].*',
r'.*\bRelease[\\\/].*',
r'.*\bxcodebuild[\\\/].*',
r'.*\bout[\\\/].*',
# There is no point in processing a patch file.
r'.+\.diff$',
r'.+\.patch$',
)
def _CheckLicenses(input_api, output_api):
"""Checks third party licenses and returns a list of violations."""
return [
output_api.PresubmitError(v) for v in licenses.ScanThirdPartyDirs()
]
def _CheckDeps(input_api, output_api):
"""Checks DEPS rules and returns a list of violations."""
deps_checker = DepsChecker(input_api.PresubmitLocalPath())
deps_checker.CheckDirectory(input_api.PresubmitLocalPath())
deps_results = deps_checker.results_formatter.GetResults()
return [output_api.PresubmitError(v) for v in deps_results]
# Matches OSP_CHECK(foo.is_value()) or OSP_DCHECK(foo.is_value())
_RE_PATTERN_VALUE_CHECK = re.compile(
r'\s*OSP_D?CHECK\([^)]*\.is_value\(\)\);\s*')
# Matches Foo(Foo&&) when not followed by noexcept.
_RE_PATTERN_MOVE_WITHOUT_NOEXCEPT = re.compile(
r'\s*(?P<classname>\w+)\((?P=classname)&&[^)]*\)\s*(?!noexcept)\s*[{;=]')
def _CheckNoRegexMatches(regex,
filename,
clean_lines,
linenum,
error,
error_type,
error_msg,
include_cpp_files=True):
"""Checks that there are no matches for a specific regex.
Args:
regex: regex to use for matching.
filename: The name of the current file.
clean_lines: A CleansedLines instance containing the file.
linenum: The number of the line to check.
error: The function to call with any errors found.
error_type: type of error, e.g. runtime/noexcept
error_msg: Specific message to prepend when regex match is found.
"""
if not include_cpp_files and not filename.endswith('.h'):
return
line = clean_lines.elided[linenum]
matched = regex.match(line)
if matched:
error(filename, linenum, error_type, 4,
'Error: {} at {}'.format(error_msg,
matched.group(0).strip()))
def _CheckNoValueDchecks(filename, clean_lines, linenum, error):
"""Checks that there are no OSP_DCHECK(foo.is_value()) instances.
filename: The name of the current file.
clean_lines: A CleansedLines instance containing the file.
linenum: The number of the line to check.
error: The function to call with any errors found.
"""
_CheckNoRegexMatches(_RE_PATTERN_VALUE_CHECK, filename, clean_lines,
linenum, error, 'runtime/is_value_dchecks',
'Unnecessary CHECK for ErrorOr::is_value()')
def _CheckNoexceptOnMove(filename, clean_lines, linenum, error):
"""Checks that move constructors are declared with 'noexcept'.
filename: The name of the current file.
clean_lines: A CleansedLines instance containing the file.
linenum: The number of the line to check.
error: The function to call with any errors found.
"""
# We only check headers as noexcept is meaningful on declarations, not
# definitions. This may skip some definitions in .cc files though.
_CheckNoRegexMatches(_RE_PATTERN_MOVE_WITHOUT_NOEXCEPT, filename,
clean_lines, linenum, error, 'runtime/noexcept',
'Move constructor not declared \'noexcept\'', False)
# - We disable c++11 header checks since Open Screen allows them.
# - We disable whitespace/braces because of various false positives.
# - There are some false positives with 'explicit' checks, but it's useful
# enough to keep.
# - We add a custom check for 'noexcept' usage.
def _CheckChangeLintsClean(input_api, output_api):
"""Checks that all '.cc' and '.h' files pass cpplint.py."""
cpplint = input_api.cpplint
# Access to a protected member _XX of a client class
# pylint: disable=protected-access
cpplint._cpplint_state.ResetErrorCounts()
cpplint._SetFilters('-build/c++11,-whitespace/braces')
files = [
f.AbsoluteLocalPath() for f in input_api.AffectedSourceFiles(None)
]
CPPLINT_VERBOSE_LEVEL = 4
for file_name in files:
cpplint.ProcessFile(file_name, CPPLINT_VERBOSE_LEVEL,
[_CheckNoexceptOnMove, _CheckNoValueDchecks])
if cpplint._cpplint_state.error_count:
if input_api.is_committing:
res_type = output_api.PresubmitError
else:
res_type = output_api.PresubmitPromptWarning
return [res_type('Changelist failed cpplint.py check.')]
return []
def _CommonChecks(input_api, output_api):
# PanProjectChecks include:
# CheckLongLines (@ 80 cols)
# CheckChangeHasNoTabs
# CheckChangeHasNoStrayWhitespace
# CheckLicense
# CheckChangeWasUploaded (if committing)
# CheckChangeHasDescription
# CheckDoNotSubmitInDescription
# CheckDoNotSubmitInFiles
results = input_api.canned_checks.PanProjectChecks(input_api,
output_api,
owners_check=False)
# No carriage return characters, files end with one EOL (\n).
results.extend(
input_api.canned_checks.CheckChangeHasNoCrAndHasOnlyOneEol(
input_api, output_api))
# Gender inclusivity
results.extend(
input_api.canned_checks.CheckGenderNeutral(input_api, output_api))
# TODO(bug) format required
results.extend(
input_api.canned_checks.CheckChangeTodoHasOwner(input_api, output_api))
# Linter.
results.extend(_CheckChangeLintsClean(input_api, output_api))
# clang-format
results.extend(
input_api.canned_checks.CheckPatchFormatted(input_api,
output_api,
bypass_warnings=False))
# GN formatting
results.extend(
input_api.canned_checks.CheckGNFormatted(input_api, output_api))
# buildtools/checkdeps
results.extend(_CheckDeps(input_api, output_api))
# tools/licenses
results.extend(_CheckLicenses(input_api, output_api))
return results
def CheckChangeOnUpload(input_api, output_api):
input_api.DEFAULT_FILES_TO_SKIP = _EXCLUDED_PATHS
# We always run the OnCommit checks, as well as some additional checks.
results = CheckChangeOnCommit(input_api, output_api)
results.extend(
input_api.canned_checks.CheckChangedLUCIConfigs(input_api, output_api))
return results
def CheckChangeOnCommit(input_api, output_api):
input_api.DEFAULT_FILES_TO_SKIP = _EXCLUDED_PATHS
return _CommonChecks(input_api, output_api)
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