264 lines
9.6 KiB
Python
264 lines
9.6 KiB
Python
|
"""Classification of possible errors mypy can detect.
|
||
|
|
||
|
These can be used for filtering specific errors.
|
||
|
"""
|
||
|
|
||
|
from __future__ import annotations
|
||
|
|
||
|
from collections import defaultdict
|
||
|
from typing import Final
|
||
|
|
||
|
from mypy_extensions import mypyc_attr
|
||
|
|
||
|
error_codes: dict[str, ErrorCode] = {}
|
||
|
sub_code_map: dict[str, set[str]] = defaultdict(set)
|
||
|
|
||
|
|
||
|
@mypyc_attr(allow_interpreted_subclasses=True)
|
||
|
class ErrorCode:
|
||
|
def __init__(
|
||
|
self,
|
||
|
code: str,
|
||
|
description: str,
|
||
|
category: str,
|
||
|
default_enabled: bool = True,
|
||
|
sub_code_of: ErrorCode | None = None,
|
||
|
) -> None:
|
||
|
self.code = code
|
||
|
self.description = description
|
||
|
self.category = category
|
||
|
self.default_enabled = default_enabled
|
||
|
self.sub_code_of = sub_code_of
|
||
|
if sub_code_of is not None:
|
||
|
assert sub_code_of.sub_code_of is None, "Nested subcategories are not supported"
|
||
|
sub_code_map[sub_code_of.code].add(code)
|
||
|
error_codes[code] = self
|
||
|
|
||
|
def __str__(self) -> str:
|
||
|
return f"<ErrorCode {self.code}>"
|
||
|
|
||
|
def __eq__(self, other: object) -> bool:
|
||
|
if not isinstance(other, ErrorCode):
|
||
|
return False
|
||
|
return self.code == other.code
|
||
|
|
||
|
def __hash__(self) -> int:
|
||
|
return hash((self.code,))
|
||
|
|
||
|
|
||
|
ATTR_DEFINED: Final = ErrorCode("attr-defined", "Check that attribute exists", "General")
|
||
|
NAME_DEFINED: Final = ErrorCode("name-defined", "Check that name is defined", "General")
|
||
|
CALL_ARG: Final[ErrorCode] = ErrorCode(
|
||
|
"call-arg", "Check number, names and kinds of arguments in calls", "General"
|
||
|
)
|
||
|
ARG_TYPE: Final = ErrorCode("arg-type", "Check argument types in calls", "General")
|
||
|
CALL_OVERLOAD: Final = ErrorCode(
|
||
|
"call-overload", "Check that an overload variant matches arguments", "General"
|
||
|
)
|
||
|
VALID_TYPE: Final[ErrorCode] = ErrorCode(
|
||
|
"valid-type", "Check that type (annotation) is valid", "General"
|
||
|
)
|
||
|
VAR_ANNOTATED: Final = ErrorCode(
|
||
|
"var-annotated", "Require variable annotation if type can't be inferred", "General"
|
||
|
)
|
||
|
OVERRIDE: Final = ErrorCode(
|
||
|
"override", "Check that method override is compatible with base class", "General"
|
||
|
)
|
||
|
RETURN: Final[ErrorCode] = ErrorCode(
|
||
|
"return", "Check that function always returns a value", "General"
|
||
|
)
|
||
|
RETURN_VALUE: Final[ErrorCode] = ErrorCode(
|
||
|
"return-value", "Check that return value is compatible with signature", "General"
|
||
|
)
|
||
|
ASSIGNMENT: Final[ErrorCode] = ErrorCode(
|
||
|
"assignment", "Check that assigned value is compatible with target", "General"
|
||
|
)
|
||
|
METHOD_ASSIGN: Final[ErrorCode] = ErrorCode(
|
||
|
"method-assign",
|
||
|
"Check that assignment target is not a method",
|
||
|
"General",
|
||
|
sub_code_of=ASSIGNMENT,
|
||
|
)
|
||
|
TYPE_ARG: Final = ErrorCode("type-arg", "Check that generic type arguments are present", "General")
|
||
|
TYPE_VAR: Final = ErrorCode("type-var", "Check that type variable values are valid", "General")
|
||
|
UNION_ATTR: Final = ErrorCode(
|
||
|
"union-attr", "Check that attribute exists in each item of a union", "General"
|
||
|
)
|
||
|
INDEX: Final = ErrorCode("index", "Check indexing operations", "General")
|
||
|
OPERATOR: Final = ErrorCode("operator", "Check that operator is valid for operands", "General")
|
||
|
LIST_ITEM: Final = ErrorCode(
|
||
|
"list-item", "Check list items in a list expression [item, ...]", "General"
|
||
|
)
|
||
|
DICT_ITEM: Final = ErrorCode(
|
||
|
"dict-item", "Check dict items in a dict expression {key: value, ...}", "General"
|
||
|
)
|
||
|
TYPEDDICT_ITEM: Final = ErrorCode(
|
||
|
"typeddict-item", "Check items when constructing TypedDict", "General"
|
||
|
)
|
||
|
TYPEDDICT_UNKNOWN_KEY: Final = ErrorCode(
|
||
|
"typeddict-unknown-key",
|
||
|
"Check unknown keys when constructing TypedDict",
|
||
|
"General",
|
||
|
sub_code_of=TYPEDDICT_ITEM,
|
||
|
)
|
||
|
HAS_TYPE: Final = ErrorCode(
|
||
|
"has-type", "Check that type of reference can be determined", "General"
|
||
|
)
|
||
|
IMPORT: Final = ErrorCode(
|
||
|
"import", "Require that imported module can be found or has stubs", "General"
|
||
|
)
|
||
|
IMPORT_NOT_FOUND: Final = ErrorCode(
|
||
|
"import-not-found", "Require that imported module can be found", "General", sub_code_of=IMPORT
|
||
|
)
|
||
|
IMPORT_UNTYPED: Final = ErrorCode(
|
||
|
"import-untyped", "Require that imported module has stubs", "General", sub_code_of=IMPORT
|
||
|
)
|
||
|
NO_REDEF: Final = ErrorCode("no-redef", "Check that each name is defined once", "General")
|
||
|
FUNC_RETURNS_VALUE: Final = ErrorCode(
|
||
|
"func-returns-value", "Check that called function returns a value in value context", "General"
|
||
|
)
|
||
|
ABSTRACT: Final = ErrorCode(
|
||
|
"abstract", "Prevent instantiation of classes with abstract attributes", "General"
|
||
|
)
|
||
|
TYPE_ABSTRACT: Final = ErrorCode(
|
||
|
"type-abstract", "Require only concrete classes where Type[...] is expected", "General"
|
||
|
)
|
||
|
VALID_NEWTYPE: Final = ErrorCode(
|
||
|
"valid-newtype", "Check that argument 2 to NewType is valid", "General"
|
||
|
)
|
||
|
STRING_FORMATTING: Final = ErrorCode(
|
||
|
"str-format", "Check that string formatting/interpolation is type-safe", "General"
|
||
|
)
|
||
|
STR_BYTES_PY3: Final = ErrorCode(
|
||
|
"str-bytes-safe", "Warn about implicit coercions related to bytes and string types", "General"
|
||
|
)
|
||
|
EXIT_RETURN: Final = ErrorCode(
|
||
|
"exit-return", "Warn about too general return type for '__exit__'", "General"
|
||
|
)
|
||
|
LITERAL_REQ: Final = ErrorCode("literal-required", "Check that value is a literal", "General")
|
||
|
UNUSED_COROUTINE: Final = ErrorCode(
|
||
|
"unused-coroutine", "Ensure that all coroutines are used", "General"
|
||
|
)
|
||
|
# TODO: why do we need the explicit type here? Without it mypyc CI builds fail with
|
||
|
# mypy/message_registry.py:37: error: Cannot determine type of "EMPTY_BODY" [has-type]
|
||
|
EMPTY_BODY: Final[ErrorCode] = ErrorCode(
|
||
|
"empty-body",
|
||
|
"A dedicated error code to opt out return errors for empty/trivial bodies",
|
||
|
"General",
|
||
|
)
|
||
|
SAFE_SUPER: Final = ErrorCode(
|
||
|
"safe-super", "Warn about calls to abstract methods with empty/trivial bodies", "General"
|
||
|
)
|
||
|
TOP_LEVEL_AWAIT: Final = ErrorCode(
|
||
|
"top-level-await", "Warn about top level await expressions", "General"
|
||
|
)
|
||
|
AWAIT_NOT_ASYNC: Final = ErrorCode(
|
||
|
"await-not-async", 'Warn about "await" outside coroutine ("async def")', "General"
|
||
|
)
|
||
|
# These error codes aren't enabled by default.
|
||
|
NO_UNTYPED_DEF: Final[ErrorCode] = ErrorCode(
|
||
|
"no-untyped-def", "Check that every function has an annotation", "General"
|
||
|
)
|
||
|
NO_UNTYPED_CALL: Final = ErrorCode(
|
||
|
"no-untyped-call",
|
||
|
"Disallow calling functions without type annotations from annotated functions",
|
||
|
"General",
|
||
|
)
|
||
|
REDUNDANT_CAST: Final = ErrorCode(
|
||
|
"redundant-cast", "Check that cast changes type of expression", "General"
|
||
|
)
|
||
|
ASSERT_TYPE: Final = ErrorCode("assert-type", "Check that assert_type() call succeeds", "General")
|
||
|
COMPARISON_OVERLAP: Final = ErrorCode(
|
||
|
"comparison-overlap", "Check that types in comparisons and 'in' expressions overlap", "General"
|
||
|
)
|
||
|
NO_ANY_UNIMPORTED: Final = ErrorCode(
|
||
|
"no-any-unimported", 'Reject "Any" types from unfollowed imports', "General"
|
||
|
)
|
||
|
NO_ANY_RETURN: Final = ErrorCode(
|
||
|
"no-any-return",
|
||
|
'Reject returning value with "Any" type if return type is not "Any"',
|
||
|
"General",
|
||
|
)
|
||
|
UNREACHABLE: Final = ErrorCode(
|
||
|
"unreachable", "Warn about unreachable statements or expressions", "General"
|
||
|
)
|
||
|
ANNOTATION_UNCHECKED = ErrorCode(
|
||
|
"annotation-unchecked", "Notify about type annotations in unchecked functions", "General"
|
||
|
)
|
||
|
POSSIBLY_UNDEFINED: Final[ErrorCode] = ErrorCode(
|
||
|
"possibly-undefined",
|
||
|
"Warn about variables that are defined only in some execution paths",
|
||
|
"General",
|
||
|
default_enabled=False,
|
||
|
)
|
||
|
REDUNDANT_EXPR: Final = ErrorCode(
|
||
|
"redundant-expr", "Warn about redundant expressions", "General", default_enabled=False
|
||
|
)
|
||
|
TRUTHY_BOOL: Final[ErrorCode] = ErrorCode(
|
||
|
"truthy-bool",
|
||
|
"Warn about expressions that could always evaluate to true in boolean contexts",
|
||
|
"General",
|
||
|
default_enabled=False,
|
||
|
)
|
||
|
TRUTHY_FUNCTION: Final[ErrorCode] = ErrorCode(
|
||
|
"truthy-function",
|
||
|
"Warn about function that always evaluate to true in boolean contexts",
|
||
|
"General",
|
||
|
)
|
||
|
TRUTHY_ITERABLE: Final[ErrorCode] = ErrorCode(
|
||
|
"truthy-iterable",
|
||
|
"Warn about Iterable expressions that could always evaluate to true in boolean contexts",
|
||
|
"General",
|
||
|
default_enabled=False,
|
||
|
)
|
||
|
NAME_MATCH: Final = ErrorCode(
|
||
|
"name-match", "Check that type definition has consistent naming", "General"
|
||
|
)
|
||
|
NO_OVERLOAD_IMPL: Final = ErrorCode(
|
||
|
"no-overload-impl",
|
||
|
"Check that overloaded functions outside stub files have an implementation",
|
||
|
"General",
|
||
|
)
|
||
|
IGNORE_WITHOUT_CODE: Final = ErrorCode(
|
||
|
"ignore-without-code",
|
||
|
"Warn about '# type: ignore' comments which do not have error codes",
|
||
|
"General",
|
||
|
default_enabled=False,
|
||
|
)
|
||
|
UNUSED_AWAITABLE: Final = ErrorCode(
|
||
|
"unused-awaitable",
|
||
|
"Ensure that all awaitable values are used",
|
||
|
"General",
|
||
|
default_enabled=False,
|
||
|
)
|
||
|
REDUNDANT_SELF_TYPE = ErrorCode(
|
||
|
"redundant-self",
|
||
|
"Warn about redundant Self type annotations on method first argument",
|
||
|
"General",
|
||
|
default_enabled=False,
|
||
|
)
|
||
|
USED_BEFORE_DEF: Final[ErrorCode] = ErrorCode(
|
||
|
"used-before-def", "Warn about variables that are used before they are defined", "General"
|
||
|
)
|
||
|
UNUSED_IGNORE: Final = ErrorCode(
|
||
|
"unused-ignore", "Ensure that all type ignores are used", "General", default_enabled=False
|
||
|
)
|
||
|
EXPLICIT_OVERRIDE_REQUIRED: Final = ErrorCode(
|
||
|
"explicit-override",
|
||
|
"Require @override decorator if method is overriding a base class method",
|
||
|
"General",
|
||
|
default_enabled=False,
|
||
|
)
|
||
|
|
||
|
|
||
|
# Syntax errors are often blocking.
|
||
|
SYNTAX: Final[ErrorCode] = ErrorCode("syntax", "Report syntax errors", "General")
|
||
|
|
||
|
# This is an internal marker code for a whole-file ignore. It is not intended to
|
||
|
# be user-visible.
|
||
|
FILE: Final = ErrorCode("file", "Internal marker for a whole file being ignored", "General")
|
||
|
del error_codes[FILE.code]
|
||
|
|
||
|
# This is a catch-all for remaining uncategorized errors.
|
||
|
MISC: Final = ErrorCode("misc", "Miscellaneous other checks", "General")
|