174 lines
6.4 KiB
Python
174 lines
6.4 KiB
Python
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"""Classification of possible errors mypy can detect.
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These can be used for filtering specific errors.
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"""
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from typing import Dict, List
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from typing_extensions import Final
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# All created error codes are implicitly stored in this list.
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all_error_codes: List["ErrorCode"] = []
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error_codes: Dict[str, "ErrorCode"] = {}
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class ErrorCode:
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def __init__(self, code: str,
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description: str,
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category: str,
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default_enabled: bool = True) -> None:
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self.code = code
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self.description = description
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self.category = category
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self.default_enabled = default_enabled
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error_codes[code] = self
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def __str__(self) -> str:
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return f'<ErrorCode {self.code}>'
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ATTR_DEFINED: Final = ErrorCode("attr-defined", "Check that attribute exists", "General")
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NAME_DEFINED: Final = ErrorCode("name-defined", "Check that name is defined", "General")
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CALL_ARG: Final[ErrorCode] = ErrorCode(
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"call-arg", "Check number, names and kinds of arguments in calls", "General"
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)
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ARG_TYPE: Final = ErrorCode("arg-type", "Check argument types in calls", "General")
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CALL_OVERLOAD: Final = ErrorCode(
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"call-overload", "Check that an overload variant matches arguments", "General"
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)
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VALID_TYPE: Final = ErrorCode("valid-type", "Check that type (annotation) is valid", "General")
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VAR_ANNOTATED: Final = ErrorCode(
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"var-annotated", "Require variable annotation if type can't be inferred", "General"
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)
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OVERRIDE: Final = ErrorCode(
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"override", "Check that method override is compatible with base class", "General"
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)
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RETURN: Final[ErrorCode] = ErrorCode(
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"return", "Check that function always returns a value", "General"
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)
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RETURN_VALUE: Final[ErrorCode] = ErrorCode(
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"return-value", "Check that return value is compatible with signature", "General"
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)
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ASSIGNMENT: Final = ErrorCode(
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"assignment", "Check that assigned value is compatible with target", "General"
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)
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TYPE_ARG: Final = ErrorCode("type-arg", "Check that generic type arguments are present", "General")
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TYPE_VAR: Final = ErrorCode("type-var", "Check that type variable values are valid", "General")
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UNION_ATTR: Final = ErrorCode(
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"union-attr", "Check that attribute exists in each item of a union", "General"
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)
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INDEX: Final = ErrorCode("index", "Check indexing operations", "General")
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OPERATOR: Final = ErrorCode("operator", "Check that operator is valid for operands", "General")
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LIST_ITEM: Final = ErrorCode(
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"list-item", "Check list items in a list expression [item, ...]", "General"
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)
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DICT_ITEM: Final = ErrorCode(
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"dict-item", "Check dict items in a dict expression {key: value, ...}", "General"
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)
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TYPEDDICT_ITEM: Final = ErrorCode(
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"typeddict-item", "Check items when constructing TypedDict", "General"
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)
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HAS_TYPE: Final = ErrorCode(
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"has-type", "Check that type of reference can be determined", "General"
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)
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IMPORT: Final = ErrorCode(
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"import", "Require that imported module can be found or has stubs", "General"
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)
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NO_REDEF: Final = ErrorCode("no-redef", "Check that each name is defined once", "General")
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FUNC_RETURNS_VALUE: Final = ErrorCode(
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"func-returns-value", "Check that called function returns a value in value context", "General"
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)
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ABSTRACT: Final = ErrorCode(
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"abstract", "Prevent instantiation of classes with abstract attributes", "General"
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)
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VALID_NEWTYPE: Final = ErrorCode(
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"valid-newtype", "Check that argument 2 to NewType is valid", "General"
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)
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STRING_FORMATTING: Final = ErrorCode(
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"str-format", "Check that string formatting/interpolation is type-safe", "General"
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)
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STR_BYTES_PY3: Final = ErrorCode(
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"str-bytes-safe", "Warn about dangerous coercions related to bytes and string types", "General"
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)
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EXIT_RETURN: Final = ErrorCode(
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"exit-return", "Warn about too general return type for '__exit__'", "General"
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)
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LITERAL_REQ: Final = ErrorCode(
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"literal-required", "Check that value is a literal", 'General'
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)
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UNUSED_COROUTINE: Final = ErrorCode(
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"unused-coroutine", "Ensure that all coroutines are used", "General"
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)
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# These error codes aren't enabled by default.
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NO_UNTYPED_DEF: Final[ErrorCode] = ErrorCode(
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"no-untyped-def", "Check that every function has an annotation", "General"
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)
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NO_UNTYPED_CALL: Final = ErrorCode(
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"no-untyped-call",
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"Disallow calling functions without type annotations from annotated functions",
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"General",
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)
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REDUNDANT_CAST: Final = ErrorCode(
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"redundant-cast", "Check that cast changes type of expression", "General"
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)
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ASSERT_TYPE: Final = ErrorCode(
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"assert-type", "Check that assert_type() call succeeds", "General"
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)
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COMPARISON_OVERLAP: Final = ErrorCode(
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"comparison-overlap", "Check that types in comparisons and 'in' expressions overlap", "General"
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)
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NO_ANY_UNIMPORTED: Final = ErrorCode(
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"no-any-unimported", 'Reject "Any" types from unfollowed imports', "General"
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)
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NO_ANY_RETURN: Final = ErrorCode(
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"no-any-return",
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'Reject returning value with "Any" type if return type is not "Any"',
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"General",
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)
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UNREACHABLE: Final = ErrorCode(
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"unreachable", "Warn about unreachable statements or expressions", "General"
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)
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REDUNDANT_EXPR: Final = ErrorCode(
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"redundant-expr", "Warn about redundant expressions", "General", default_enabled=False
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)
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TRUTHY_BOOL: Final[ErrorCode] = ErrorCode(
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"truthy-bool",
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"Warn about expressions that could always evaluate to true in boolean contexts",
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"General",
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default_enabled=False,
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)
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NAME_MATCH: Final = ErrorCode(
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"name-match", "Check that type definition has consistent naming", "General"
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)
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NO_OVERLOAD_IMPL: Final = ErrorCode(
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"no-overload-impl",
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"Check that overloaded functions outside stub files have an implementation",
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"General",
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)
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IGNORE_WITHOUT_CODE: Final = ErrorCode(
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"ignore-without-code",
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"Warn about '# type: ignore' comments which do not have error codes",
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"General",
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default_enabled=False,
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)
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UNUSED_AWAITABLE: Final = ErrorCode(
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"unused-awaitable",
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"Ensure that all awaitable values are used",
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"General",
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default_enabled=False,
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)
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# Syntax errors are often blocking.
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SYNTAX: Final = ErrorCode("syntax", "Report syntax errors", "General")
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# This is an internal marker code for a whole-file ignore. It is not intended to
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# be user-visible.
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FILE: Final = ErrorCode("file", "Internal marker for a whole file being ignored", "General")
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del error_codes[FILE.code]
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# This is a catch-all for remaining uncategorized errors.
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MISC: Final = ErrorCode("misc", "Miscellaneous other checks", "General")
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