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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 # Copyright (c) https://github.com/PyCQA/pylint/blob/main/CONTRIBUTORS.txt from __future__ import annotations import sys import warnings from typing import TYPE_CHECKING, Any from astroid import nodes from pylint.constants import _SCOPE_EXEMPT, MSG_TYPES, WarningScope from pylint.exceptions import InvalidMessageError from pylint.utils import normalize_text if TYPE_CHECKING: from pylint.checkers import BaseChecker class MessageDefinition: # pylint: disable-next=too-many-arguments def __init__( self, checker: BaseChecker, msgid: str, msg: str, description: str, symbol: str, scope: str, minversion: tuple[int, int] | None = None, maxversion: tuple[int, int] | None = None, old_names: list[tuple[str, str]] | None = None, shared: bool = False, default_enabled: bool = True, ) -> None: self.checker_name = checker.name self.check_msgid(msgid) self.msgid = msgid self.symbol = symbol self.msg = msg self.description = description self.scope = scope self.minversion = minversion self.maxversion = maxversion self.shared = shared self.default_enabled = default_enabled self.old_names: list[tuple[str, str]] = [] if old_names: for old_msgid, old_symbol in old_names: self.check_msgid(old_msgid) self.old_names.append( (old_msgid, old_symbol), ) @staticmethod def check_msgid(msgid: str) -> None: if len(msgid) != 5: raise InvalidMessageError(f"Invalid message id {msgid!r}") if msgid[0] not in MSG_TYPES: raise InvalidMessageError(f"Bad message type {msgid[0]} in {msgid!r}") def __eq__(self, other: Any) -> bool: return ( isinstance(other, MessageDefinition) and self.msgid == other.msgid and self.symbol == other.symbol ) def __repr__(self) -> str: return f"MessageDefinition:{self.symbol} ({self.msgid})" def __str__(self) -> str: return f"{repr(self)}:\n{self.msg} {self.description}" def may_be_emitted( self, py_version: tuple[int, ...] | sys._version_info | None = None, ) -> bool: """Return True if message may be emitted using the configured py_version.""" if py_version is None: py_version = sys.version_info warnings.warn( "'py_version' will be a required parameter of " "'MessageDefinition.may_be_emitted' in pylint 3.0. The most likely " "solution is to use 'linter.config.py_version' if you need to keep " "using this function, or to use 'MessageDefinition.is_message_enabled'" " instead.", DeprecationWarning, ) if self.minversion is not None and self.minversion > py_version: return False if self.maxversion is not None and self.maxversion <= py_version: return False return True def format_help(self, checkerref: bool = False) -> str: """Return the help string for the given message id.""" desc = self.description if checkerref: desc += f" This message belongs to the {self.checker_name} checker." title = self.msg if self.minversion or self.maxversion: restr = [] if self.minversion: restr.append(f"< {'.'.join(str(n) for n in self.minversion)}") if self.maxversion: restr.append(f">= {'.'.join(str(n) for n in self.maxversion)}") restriction = " or ".join(restr) if checkerref: desc += f" It can't be emitted when using Python {restriction}." else: desc += ( f" This message can't be emitted when using Python {restriction}." ) msg_help = normalize_text(" ".join(desc.split()), indent=" ") message_id = f"{self.symbol} ({self.msgid})" if title != "%s": title = title.splitlines()[0] return f":{message_id}: *{title.rstrip(' ')}*\n{msg_help}" return f":{message_id}:\n{msg_help}" def check_message_definition( self, line: int | None, node: nodes.NodeNG | None ) -> None: """Check MessageDefinition for possible errors.""" if self.msgid[0] not in _SCOPE_EXEMPT: # Fatal messages and reports are special, the node/scope distinction # does not apply to them. if self.scope == WarningScope.LINE: if line is None: raise InvalidMessageError( f"Message {self.msgid} must provide line, got None" ) if node is not None: raise InvalidMessageError( f"Message {self.msgid} must only provide line, " f"got line={line}, node={node}" ) elif self.scope == WarningScope.NODE: # Node-based warnings may provide an override line. if node is None: raise InvalidMessageError( f"Message {self.msgid} must provide Node, got None" )