forked from pylint-dev/pylint
/
pylinter.py
1296 lines (1185 loc) · 50 KB
/
pylinter.py
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# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# For details: https://github.com/PyCQA/pylint/blob/main/LICENSE
import collections
import contextlib
import functools
import operator
import os
import sys
import tokenize
import traceback
import warnings
from io import TextIOWrapper
from typing import Iterable, Iterator, List, Optional, Sequence
import astroid
from astroid import AstroidError, nodes
from pylint import checkers, config, exceptions, interfaces, reporters
from pylint.constants import MAIN_CHECKER_NAME, MSG_TYPES
from pylint.lint.expand_modules import expand_modules
from pylint.lint.parallel import check_parallel
from pylint.lint.report_functions import (
report_messages_by_module_stats,
report_messages_stats,
report_total_messages_stats,
)
from pylint.lint.utils import (
fix_import_path,
get_fatal_error_message,
prepare_crash_report,
)
from pylint.message import MessageDefinitionStore, MessagesHandlerMixIn
from pylint.reporters.ureports import nodes as report_nodes
from pylint.typing import CheckerStats, FileItem, ModuleDescriptionDict
from pylint.utils import ASTWalker, FileState, utils
from pylint.utils.pragma_parser import (
OPTION_PO,
InvalidPragmaError,
UnRecognizedOptionError,
parse_pragma,
)
MANAGER = astroid.MANAGER
def _read_stdin():
# https://mail.python.org/pipermail/python-list/2012-November/634424.html
sys.stdin = TextIOWrapper(sys.stdin.detach(), encoding="utf-8")
return sys.stdin.read()
def _load_reporter_by_class(reporter_class: str) -> type:
qname = reporter_class
module_part = astroid.modutils.get_module_part(qname)
module = astroid.modutils.load_module_from_name(module_part)
class_name = qname.split(".")[-1]
return getattr(module, class_name)
# Python Linter class #########################################################
MSGS = {
"F0001": (
"%s",
"fatal",
"Used when an error occurred preventing the analysis of a \
module (unable to find it for instance).",
),
"F0002": (
"%s: %s",
"astroid-error",
"Used when an unexpected error occurred while building the "
"Astroid representation. This is usually accompanied by a "
"traceback. Please report such errors !",
),
"F0010": (
"error while code parsing: %s",
"parse-error",
"Used when an exception occurred while building the Astroid "
"representation which could be handled by astroid.",
),
"I0001": (
"Unable to run raw checkers on built-in module %s",
"raw-checker-failed",
"Used to inform that a built-in module has not been checked "
"using the raw checkers.",
),
"I0010": (
"Unable to consider inline option %r",
"bad-inline-option",
"Used when an inline option is either badly formatted or can't "
"be used inside modules.",
),
"I0011": (
"Locally disabling %s (%s)",
"locally-disabled",
"Used when an inline option disables a message or a messages category.",
),
"I0013": (
"Ignoring entire file",
"file-ignored",
"Used to inform that the file will not be checked",
),
"I0020": (
"Suppressed %s (from line %d)",
"suppressed-message",
"A message was triggered on a line, but suppressed explicitly "
"by a disable= comment in the file. This message is not "
"generated for messages that are ignored due to configuration "
"settings.",
),
"I0021": (
"Useless suppression of %s",
"useless-suppression",
"Reported when a message is explicitly disabled for a line or "
"a block of code, but never triggered.",
),
"I0022": (
'Pragma "%s" is deprecated, use "%s" instead',
"deprecated-pragma",
"Some inline pylint options have been renamed or reworked, "
"only the most recent form should be used. "
"NOTE:skip-all is only available with pylint >= 0.26",
{"old_names": [("I0014", "deprecated-disable-all")]},
),
"E0001": ("%s", "syntax-error", "Used when a syntax error is raised for a module."),
"E0011": (
"Unrecognized file option %r",
"unrecognized-inline-option",
"Used when an unknown inline option is encountered.",
),
"E0012": (
"Bad option value %r",
"bad-option-value",
"Used when a bad value for an inline option is encountered.",
),
"E0013": (
"Plugin '%s' is impossible to load, is it installed ? ('%s')",
"bad-plugin-value",
"Used when a bad value is used in 'load-plugins'.",
),
}
# pylint: disable=too-many-instance-attributes,too-many-public-methods
class PyLinter(
config.OptionsManagerMixIn,
MessagesHandlerMixIn,
reporters.ReportsHandlerMixIn,
checkers.BaseTokenChecker,
):
"""lint Python modules using external checkers.
This is the main checker controlling the other ones and the reports
generation. It is itself both a raw checker and an astroid checker in order
to:
* handle message activation / deactivation at the module level
* handle some basic but necessary stats'data (number of classes, methods...)
IDE plugin developers: you may have to call
`astroid.builder.MANAGER.astroid_cache.clear()` across runs if you want
to ensure the latest code version is actually checked.
This class needs to support pickling for parallel linting to work. The exception
is reporter member; see check_parallel function for more details.
"""
__implements__ = (interfaces.ITokenChecker,)
name = MAIN_CHECKER_NAME
priority = 0
level = 0
msgs = MSGS
# Will be used like this : datetime.now().strftime(crash_file_path)
crash_file_path: str = "pylint-crash-%Y-%m-%d-%H.txt"
@staticmethod
def make_options():
return (
(
"ignore",
{
"type": "csv",
"metavar": "<file>[,<file>...]",
"dest": "black_list",
"default": ("CVS",),
"help": "Files or directories to be skipped. "
"They should be base names, not paths.",
},
),
(
"ignore-patterns",
{
"type": "regexp_csv",
"metavar": "<pattern>[,<pattern>...]",
"dest": "black_list_re",
"default": (),
"help": "Files or directories matching the regex patterns are"
" skipped. The regex matches against base names, not paths.",
},
),
(
"ignore-paths",
{
"type": "regexp_csv",
"metavar": "<pattern>[,<pattern>...]",
"dest": "ignore_list_paths_re",
"default": (),
"help": "Add files or directories matching the regex patterns to the"
" ignore-list. The regex matches against paths.",
},
),
(
"persistent",
{
"default": True,
"type": "yn",
"metavar": "<y_or_n>",
"level": 1,
"help": "Pickle collected data for later comparisons.",
},
),
(
"load-plugins",
{
"type": "csv",
"metavar": "<modules>",
"default": (),
"level": 1,
"help": "List of plugins (as comma separated values of "
"python module names) to load, usually to register "
"additional checkers.",
},
),
(
"output-format",
{
"default": "text",
"type": "string",
"metavar": "<format>",
"short": "f",
"group": "Reports",
"help": "Set the output format. Available formats are text,"
" parseable, colorized, json and msvs (visual studio)."
" You can also give a reporter class, e.g. mypackage.mymodule."
"MyReporterClass.",
},
),
(
"reports",
{
"default": False,
"type": "yn",
"metavar": "<y_or_n>",
"short": "r",
"group": "Reports",
"help": "Tells whether to display a full report or only the "
"messages.",
},
),
(
"evaluation",
{
"type": "string",
"metavar": "<python_expression>",
"group": "Reports",
"level": 1,
"default": "10.0 - ((float(5 * error + warning + refactor + "
"convention) / statement) * 10)",
"help": "Python expression which should return a score less "
"than or equal to 10. You have access to the variables "
"'error', 'warning', 'refactor', and 'convention' which "
"contain the number of messages in each category, as well as "
"'statement' which is the total number of statements "
"analyzed. This score is used by the global "
"evaluation report (RP0004).",
},
),
(
"score",
{
"default": True,
"type": "yn",
"metavar": "<y_or_n>",
"short": "s",
"group": "Reports",
"help": "Activate the evaluation score.",
},
),
(
"fail-under",
{
"default": 10,
"type": "float",
"metavar": "<score>",
"help": "Specify a score threshold to be exceeded before program exits with error.",
},
),
(
"fail-on",
{
"default": "",
"type": "csv",
"metavar": "<msg ids>",
"help": "Return non-zero exit code if any of these messages/categories are detected,"
" even if score is above --fail-under value. Syntax same as enable."
" Messages specified are enabled, while categories only check already-enabled messages.",
},
),
(
"confidence",
{
"type": "multiple_choice",
"metavar": "<levels>",
"default": "",
"choices": [c.name for c in interfaces.CONFIDENCE_LEVELS],
"group": "Messages control",
"help": "Only show warnings with the listed confidence levels."
f" Leave empty to show all. Valid levels: {', '.join(c.name for c in interfaces.CONFIDENCE_LEVELS)}.",
},
),
(
"enable",
{
"type": "csv",
"metavar": "<msg ids>",
"short": "e",
"group": "Messages control",
"help": "Enable the message, report, category or checker with the "
"given id(s). You can either give multiple identifier "
"separated by comma (,) or put this option multiple time "
"(only on the command line, not in the configuration file "
"where it should appear only once). "
'See also the "--disable" option for examples.',
},
),
(
"disable",
{
"type": "csv",
"metavar": "<msg ids>",
"short": "d",
"group": "Messages control",
"help": "Disable the message, report, category or checker "
"with the given id(s). You can either give multiple identifiers "
"separated by comma (,) or put this option multiple times "
"(only on the command line, not in the configuration file "
"where it should appear only once). "
'You can also use "--disable=all" to disable everything first '
"and then reenable specific checks. For example, if you want "
"to run only the similarities checker, you can use "
'"--disable=all --enable=similarities". '
"If you want to run only the classes checker, but have no "
"Warning level messages displayed, use "
'"--disable=all --enable=classes --disable=W".',
},
),
(
"msg-template",
{
"type": "string",
"metavar": "<template>",
"group": "Reports",
"help": (
"Template used to display messages. "
"This is a python new-style format string "
"used to format the message information. "
"See doc for all details."
),
},
),
(
"jobs",
{
"type": "int",
"metavar": "<n-processes>",
"short": "j",
"default": 1,
"help": "Use multiple processes to speed up Pylint. Specifying 0 will "
"auto-detect the number of processors available to use.",
},
),
(
"unsafe-load-any-extension",
{
"type": "yn",
"metavar": "<yn>",
"default": False,
"hide": True,
"help": (
"Allow loading of arbitrary C extensions. Extensions"
" are imported into the active Python interpreter and"
" may run arbitrary code."
),
},
),
(
"limit-inference-results",
{
"type": "int",
"metavar": "<number-of-results>",
"default": 100,
"help": (
"Control the amount of potential inferred values when inferring "
"a single object. This can help the performance when dealing with "
"large functions or complex, nested conditions. "
),
},
),
(
"extension-pkg-allow-list",
{
"type": "csv",
"metavar": "<pkg[,pkg]>",
"default": [],
"help": (
"A comma-separated list of package or module names"
" from where C extensions may be loaded. Extensions are"
" loading into the active Python interpreter and may run"
" arbitrary code."
),
},
),
(
"extension-pkg-whitelist",
{
"type": "csv",
"metavar": "<pkg[,pkg]>",
"default": [],
"help": (
"A comma-separated list of package or module names"
" from where C extensions may be loaded. Extensions are"
" loading into the active Python interpreter and may run"
" arbitrary code. (This is an alternative name to"
" extension-pkg-allow-list for backward compatibility.)"
),
},
),
(
"suggestion-mode",
{
"type": "yn",
"metavar": "<yn>",
"default": True,
"help": (
"When enabled, pylint would attempt to guess common "
"misconfiguration and emit user-friendly hints instead "
"of false-positive error messages."
),
},
),
(
"exit-zero",
{
"action": "store_true",
"help": (
"Always return a 0 (non-error) status code, even if "
"lint errors are found. This is primarily useful in "
"continuous integration scripts."
),
},
),
(
"from-stdin",
{
"action": "store_true",
"help": (
"Interpret the stdin as a python script, whose filename "
"needs to be passed as the module_or_package argument."
),
},
),
(
"py-version",
{
"default": sys.version_info[:2],
"type": "py_version",
"metavar": "<py_version>",
"help": (
"Min Python version to use for version dependend checks. "
"Will default to the version used to run pylint."
),
},
),
)
option_groups = (
("Messages control", "Options controlling analysis messages"),
("Reports", "Options related to output formatting and reporting"),
)
def __init__(self, options=(), reporter=None, option_groups=(), pylintrc=None):
"""Some stuff has to be done before ancestors initialization...
messages store / checkers / reporter / astroid manager"""
self.msgs_store = MessageDefinitionStore()
self.reporter = None
self._reporter_names = None
self._reporters = {}
self._checkers = collections.defaultdict(list)
self._pragma_lineno = {}
self._ignore_file = False
# visit variables
self.file_state = FileState()
self.current_name = None
self.current_file = None
self.stats: CheckerStats = {}
self.fail_on_symbols = []
# init options
self._external_opts = options
self.options = options + PyLinter.make_options()
self.option_groups = option_groups + PyLinter.option_groups
self._options_methods = {
"enable": self.enable,
"disable": self.disable,
"disable-next": self.disable_next,
}
self._bw_options_methods = {
"disable-msg": self._options_methods["disable"],
"enable-msg": self._options_methods["enable"],
}
MessagesHandlerMixIn.__init__(self)
reporters.ReportsHandlerMixIn.__init__(self)
super().__init__(
usage=__doc__,
config_file=pylintrc or next(config.find_default_config_files(), None),
)
checkers.BaseTokenChecker.__init__(self)
# provided reports
self.reports = (
("RP0001", "Messages by category", report_total_messages_stats),
(
"RP0002",
"% errors / warnings by module",
report_messages_by_module_stats,
),
("RP0003", "Messages", report_messages_stats),
)
self.register_checker(self)
self._dynamic_plugins = set()
self._error_mode = False
self.load_provider_defaults()
if reporter:
self.set_reporter(reporter)
def load_default_plugins(self):
checkers.initialize(self)
reporters.initialize(self)
# Make sure to load the default reporter, because
# the option has been set before the plugins had been loaded.
if not self.reporter:
self._load_reporters()
def load_plugin_modules(self, modnames):
"""take a list of module names which are pylint plugins and load
and register them
"""
for modname in modnames:
if modname in self._dynamic_plugins:
continue
self._dynamic_plugins.add(modname)
try:
module = astroid.modutils.load_module_from_name(modname)
module.register(self)
except ModuleNotFoundError:
pass
def load_plugin_configuration(self):
"""Call the configuration hook for plugins
This walks through the list of plugins, grabs the "load_configuration"
hook, if exposed, and calls it to allow plugins to configure specific
settings.
"""
for modname in self._dynamic_plugins:
try:
module = astroid.modutils.load_module_from_name(modname)
if hasattr(module, "load_configuration"):
module.load_configuration(self)
except ModuleNotFoundError as e:
self.add_message("bad-plugin-value", args=(modname, e), line=0)
def _load_reporters(self) -> None:
sub_reporters = []
output_files = []
with contextlib.ExitStack() as stack:
for reporter_name in self._reporter_names.split(","):
reporter_name, *reporter_output = reporter_name.split(":", 1)
reporter = self._load_reporter_by_name(reporter_name)
sub_reporters.append(reporter)
if reporter_output:
(reporter_output,) = reporter_output
# pylint: disable=consider-using-with
output_file = stack.enter_context(
open(reporter_output, "w", encoding="utf-8")
)
reporter.set_output(output_file)
output_files.append(output_file)
# Extend the lifetime of all opened output files
close_output_files = stack.pop_all().close
if len(sub_reporters) > 1 or output_files:
self.set_reporter(
reporters.MultiReporter(
sub_reporters,
close_output_files,
)
)
else:
self.set_reporter(sub_reporters[0])
def _load_reporter_by_name(self, reporter_name: str) -> reporters.BaseReporter:
name = reporter_name.lower()
if name in self._reporters:
return self._reporters[name]()
try:
reporter_class = _load_reporter_by_class(reporter_name)
except (ImportError, AttributeError) as e:
raise exceptions.InvalidReporterError(name) from e
else:
return reporter_class()
def set_reporter(self, reporter):
"""set the reporter used to display messages and reports"""
self.reporter = reporter
reporter.linter = self
def set_option(self, optname, value, action=None, optdict=None):
"""overridden from config.OptionsProviderMixin to handle some
special options
"""
if optname in self._options_methods or optname in self._bw_options_methods:
if value:
try:
meth = self._options_methods[optname]
except KeyError:
meth = self._bw_options_methods[optname]
warnings.warn(
f"{optname} is deprecated, replace it by {optname.split('-')[0]}",
DeprecationWarning,
)
value = utils._check_csv(value)
if isinstance(value, (list, tuple)):
for _id in value:
meth(_id, ignore_unknown=True)
else:
meth(value)
return # no need to call set_option, disable/enable methods do it
elif optname == "output-format":
self._reporter_names = value
# If the reporters are already available, load
# the reporter class.
if self._reporters:
self._load_reporters()
try:
checkers.BaseTokenChecker.set_option(self, optname, value, action, optdict)
except config.UnsupportedAction:
print(f"option {optname} can't be read from config file", file=sys.stderr)
def register_reporter(self, reporter_class):
self._reporters[reporter_class.name] = reporter_class
def report_order(self):
reports = sorted(self._reports, key=lambda x: getattr(x, "name", ""))
try:
# Remove the current reporter and add it
# at the end of the list.
reports.pop(reports.index(self))
except ValueError:
pass
else:
reports.append(self)
return reports
# checkers manipulation methods ############################################
def register_checker(self, checker):
"""register a new checker
checker is an object implementing IRawChecker or / and IAstroidChecker
"""
assert checker.priority <= 0, "checker priority can't be >= 0"
self._checkers[checker.name].append(checker)
for r_id, r_title, r_cb in checker.reports:
self.register_report(r_id, r_title, r_cb, checker)
self.register_options_provider(checker)
if hasattr(checker, "msgs"):
self.msgs_store.register_messages_from_checker(checker)
checker.load_defaults()
# Register the checker, but disable all of its messages.
if not getattr(checker, "enabled", True):
self.disable(checker.name)
def enable_fail_on_messages(self):
"""enable 'fail on' msgs
Convert values in config.fail_on (which might be msg category, msg id,
or symbol) to specific msgs, then enable and flag them for later.
"""
fail_on_vals = self.config.fail_on
if not fail_on_vals:
return
fail_on_cats = set()
fail_on_msgs = set()
for val in fail_on_vals:
# If value is a cateogry, add category, else add message
if val in MSG_TYPES:
fail_on_cats.add(val)
else:
fail_on_msgs.add(val)
# For every message in every checker, if cat or msg flagged, enable check
for all_checkers in self._checkers.values():
for checker in all_checkers:
for msg in checker.messages:
if msg.msgid in fail_on_msgs or msg.symbol in fail_on_msgs:
# message id/symbol matched, enable and flag it
self.enable(msg.msgid)
self.fail_on_symbols.append(msg.symbol)
elif msg.msgid[0] in fail_on_cats:
# message starts with a cateogry value, flag (but do not enable) it
self.fail_on_symbols.append(msg.symbol)
def any_fail_on_issues(self):
return (
self.stats
and self.stats.get("by_msg") is not None
and any(x in self.fail_on_symbols for x in self.stats["by_msg"])
)
def disable_noerror_messages(self):
for msgcat, msgids in self.msgs_store._msgs_by_category.items():
# enable only messages with 'error' severity and above ('fatal')
if msgcat in ["E", "F"]:
for msgid in msgids:
self.enable(msgid)
else:
for msgid in msgids:
self.disable(msgid)
def disable_reporters(self):
"""disable all reporters"""
for _reporters in self._reports.values():
for report_id, _, _ in _reporters:
self.disable_report(report_id)
def error_mode(self):
"""error mode: enable only errors; no reports, no persistent"""
self._error_mode = True
self.disable_noerror_messages()
self.disable("miscellaneous")
self.set_option("reports", False)
self.set_option("persistent", False)
self.set_option("score", False)
def list_messages_enabled(self):
emittable, non_emittable = self.msgs_store.find_emittable_messages()
enabled = []
disabled = []
for message in emittable:
if self.is_message_enabled(message.msgid):
enabled.append(f" {message.symbol} ({message.msgid})")
else:
disabled.append(f" {message.symbol} ({message.msgid})")
print("Enabled messages:")
for msg in enabled:
print(msg)
print("\nDisabled messages:")
for msg in disabled:
print(msg)
print("\nNon-emittable messages with current interpreter:")
for msg in non_emittable:
print(f" {msg.symbol} ({msg.msgid})")
print("")
# block level option handling #############################################
# see func_block_disable_msg.py test case for expected behaviour
def process_tokens(self, tokens):
"""Process tokens from the current module to search for module/block level
options."""
control_pragmas = {"disable", "disable-next", "enable"}
prev_line = None
saw_newline = True
seen_newline = True
for (tok_type, content, start, _, _) in tokens:
if prev_line and prev_line != start[0]:
saw_newline = seen_newline
seen_newline = False
prev_line = start[0]
if tok_type in (tokenize.NL, tokenize.NEWLINE):
seen_newline = True
if tok_type != tokenize.COMMENT:
continue
match = OPTION_PO.search(content)
if match is None:
continue
try:
for pragma_repr in parse_pragma(match.group(2)):
if pragma_repr.action in ("disable-all", "skip-file"):
if pragma_repr.action == "disable-all":
self.add_message(
"deprecated-pragma",
line=start[0],
args=("disable-all", "skip-file"),
)
self.add_message("file-ignored", line=start[0])
self._ignore_file = True
return
try:
meth = self._options_methods[pragma_repr.action]
except KeyError:
meth = self._bw_options_methods[pragma_repr.action]
# found a "(dis|en)able-msg" pragma deprecated suppression
self.add_message(
"deprecated-pragma",
line=start[0],
args=(
pragma_repr.action,
pragma_repr.action.replace("-msg", ""),
),
)
for msgid in pragma_repr.messages:
# Add the line where a control pragma was encountered.
if pragma_repr.action in control_pragmas:
self._pragma_lineno[msgid] = start[0]
if (pragma_repr.action, msgid) == ("disable", "all"):
self.add_message(
"deprecated-pragma",
line=start[0],
args=("disable=all", "skip-file"),
)
self.add_message("file-ignored", line=start[0])
self._ignore_file = True
return
# If we did not see a newline between the previous line and now,
# we saw a backslash so treat the two lines as one.
l_start = start[0]
if not saw_newline:
l_start -= 1
try:
meth(msgid, "module", l_start)
except exceptions.UnknownMessageError:
self.add_message(
"bad-option-value", args=msgid, line=start[0]
)
except UnRecognizedOptionError as err:
self.add_message(
"unrecognized-inline-option", args=err.token, line=start[0]
)
continue
except InvalidPragmaError as err:
self.add_message("bad-inline-option", args=err.token, line=start[0])
continue
# code checking methods ###################################################
def get_checkers(self):
"""return all available checkers as a list"""
return [self] + [
c
for _checkers in self._checkers.values()
for c in _checkers
if c is not self
]
def get_checker_names(self):
"""Get all the checker names that this linter knows about."""
current_checkers = self.get_checkers()
return sorted(
{
checker.name
for checker in current_checkers
if checker.name != MAIN_CHECKER_NAME
}
)
def prepare_checkers(self):
"""return checkers needed for activated messages and reports"""
if not self.config.reports:
self.disable_reporters()
# get needed checkers
needed_checkers = [self]
for checker in self.get_checkers()[1:]:
messages = {msg for msg in checker.msgs if self.is_message_enabled(msg)}
if messages or any(self.report_is_enabled(r[0]) for r in checker.reports):
needed_checkers.append(checker)
# Sort checkers by priority
needed_checkers = sorted(
needed_checkers, key=operator.attrgetter("priority"), reverse=True
)
return needed_checkers
# pylint: disable=unused-argument
@staticmethod
def should_analyze_file(modname, path, is_argument=False):
"""Returns whether or not a module should be checked.
This implementation returns True for all python source file, indicating
that all files should be linted.
Subclasses may override this method to indicate that modules satisfying
certain conditions should not be linted.
:param str modname: The name of the module to be checked.
:param str path: The full path to the source code of the module.
:param bool is_argument: Whether the file is an argument to pylint or not.
Files which respect this property are always
checked, since the user requested it explicitly.
:returns: True if the module should be checked.
:rtype: bool
"""
if is_argument:
return True
return path.endswith(".py")
# pylint: enable=unused-argument
def initialize(self):
"""Initialize linter for linting
This method is called before any linting is done.
"""
# initialize msgs_state now that all messages have been registered into
# the store
for msg in self.msgs_store.messages:
if not msg.may_be_emitted():
self._msgs_state[msg.msgid] = False
def check(self, files_or_modules: Sequence[str]) -> None:
"""main checking entry: check a list of files or modules from their name.
files_or_modules is a sequence of strings presenting modules to check.
"""
self.initialize()
if not isinstance(files_or_modules, (list, tuple)):
warnings.warn(
"In pylint 3.0, the checkers check function will only accept sequence of string"
)
files_or_modules = (files_or_modules,) # type: ignore
if self.config.from_stdin:
if len(files_or_modules) != 1:
raise exceptions.InvalidArgsError(
"Missing filename required for --from-stdin"
)
filepath = files_or_modules[0]
with fix_import_path(files_or_modules):
self._check_files(
functools.partial(self.get_ast, data=_read_stdin()),
[self._get_file_descr_from_stdin(filepath)],
)
elif self.config.jobs == 1:
with fix_import_path(files_or_modules):
self._check_files(
self.get_ast, self._iterate_file_descrs(files_or_modules)
)
else:
check_parallel(
self,
self.config.jobs,
self._iterate_file_descrs(files_or_modules),
files_or_modules,
)
def check_single_file(self, file: FileItem) -> None:
"""Check single file
The arguments are the same that are documented in _check_files
The initialize() method should be called before calling this method
"""
with self._astroid_module_checker() as check_astroid_module:
self._check_file(self.get_ast, check_astroid_module, file)
def _check_files(
self,
get_ast,
file_descrs: Iterable[FileItem],
) -> None:
"""Check all files from file_descrs
The file_descrs should be iterable of tuple (name, filepath, modname)
where
- name: full name of the module
- filepath: path of the file
- modname: module name
"""