chosen by the user.
"""
-import sys
-
from dataclasses import dataclass, field
-from enum import Enum
+from enum import Enum, auto
+from hashlib import sha256
from operator import attrgetter
-from typing import Dict, Set
-
-if sys.version_info < (3, 8):
- from typing_extensions import Final
-else:
- from typing import Final
+from typing import Dict, Final, Set
+from warnings import warn
from black.const import DEFAULT_LINE_LENGTH
class TargetVersion(Enum):
- PY27 = 2
PY33 = 3
PY34 = 4
PY35 = 5
PY38 = 8
PY39 = 9
PY310 = 10
-
- def is_python2(self) -> bool:
- return self is TargetVersion.PY27
+ PY311 = 11
+ PY312 = 12
class Feature(Enum):
- # All string literals are unicode
- UNICODE_LITERALS = 1
F_STRINGS = 2
NUMERIC_UNDERSCORES = 3
TRAILING_COMMA_IN_CALL = 4
PATTERN_MATCHING = 11
UNPACKING_ON_FLOW = 12
ANN_ASSIGN_EXTENDED_RHS = 13
+ EXCEPT_STAR = 14
+ VARIADIC_GENERICS = 15
+ DEBUG_F_STRINGS = 16
+ PARENTHESIZED_CONTEXT_MANAGERS = 17
+ TYPE_PARAMS = 18
FORCE_OPTIONAL_PARENTHESES = 50
# __future__ flags
FUTURE_ANNOTATIONS = 51
- # temporary for Python 2 deprecation
- PRINT_STMT = 200
- EXEC_STMT = 201
- AUTOMATIC_PARAMETER_UNPACKING = 202
- COMMA_STYLE_EXCEPT = 203
- COMMA_STYLE_RAISE = 204
- LONG_INT_LITERAL = 205
- OCTAL_INT_LITERAL = 206
- BACKQUOTE_REPR = 207
-
FUTURE_FLAG_TO_FEATURE: Final = {
"annotations": Feature.FUTURE_ANNOTATIONS,
VERSION_TO_FEATURES: Dict[TargetVersion, Set[Feature]] = {
- TargetVersion.PY27: {
- Feature.ASYNC_IDENTIFIERS,
- Feature.PRINT_STMT,
- Feature.EXEC_STMT,
- Feature.AUTOMATIC_PARAMETER_UNPACKING,
- Feature.COMMA_STYLE_EXCEPT,
- Feature.COMMA_STYLE_RAISE,
- Feature.LONG_INT_LITERAL,
- Feature.OCTAL_INT_LITERAL,
- Feature.BACKQUOTE_REPR,
- },
- TargetVersion.PY33: {Feature.UNICODE_LITERALS, Feature.ASYNC_IDENTIFIERS},
- TargetVersion.PY34: {Feature.UNICODE_LITERALS, Feature.ASYNC_IDENTIFIERS},
- TargetVersion.PY35: {
- Feature.UNICODE_LITERALS,
- Feature.TRAILING_COMMA_IN_CALL,
- Feature.ASYNC_IDENTIFIERS,
- },
+ TargetVersion.PY33: {Feature.ASYNC_IDENTIFIERS},
+ TargetVersion.PY34: {Feature.ASYNC_IDENTIFIERS},
+ TargetVersion.PY35: {Feature.TRAILING_COMMA_IN_CALL, Feature.ASYNC_IDENTIFIERS},
TargetVersion.PY36: {
- Feature.UNICODE_LITERALS,
Feature.F_STRINGS,
Feature.NUMERIC_UNDERSCORES,
Feature.TRAILING_COMMA_IN_CALL,
Feature.ASYNC_IDENTIFIERS,
},
TargetVersion.PY37: {
- Feature.UNICODE_LITERALS,
Feature.F_STRINGS,
Feature.NUMERIC_UNDERSCORES,
Feature.TRAILING_COMMA_IN_CALL,
Feature.FUTURE_ANNOTATIONS,
},
TargetVersion.PY38: {
- Feature.UNICODE_LITERALS,
Feature.F_STRINGS,
+ Feature.DEBUG_F_STRINGS,
Feature.NUMERIC_UNDERSCORES,
Feature.TRAILING_COMMA_IN_CALL,
Feature.TRAILING_COMMA_IN_DEF,
Feature.ANN_ASSIGN_EXTENDED_RHS,
},
TargetVersion.PY39: {
- Feature.UNICODE_LITERALS,
Feature.F_STRINGS,
+ Feature.DEBUG_F_STRINGS,
Feature.NUMERIC_UNDERSCORES,
Feature.TRAILING_COMMA_IN_CALL,
Feature.TRAILING_COMMA_IN_DEF,
Feature.POS_ONLY_ARGUMENTS,
Feature.UNPACKING_ON_FLOW,
Feature.ANN_ASSIGN_EXTENDED_RHS,
+ Feature.PARENTHESIZED_CONTEXT_MANAGERS,
},
TargetVersion.PY310: {
- Feature.UNICODE_LITERALS,
Feature.F_STRINGS,
+ Feature.DEBUG_F_STRINGS,
+ Feature.NUMERIC_UNDERSCORES,
+ Feature.TRAILING_COMMA_IN_CALL,
+ Feature.TRAILING_COMMA_IN_DEF,
+ Feature.ASYNC_KEYWORDS,
+ Feature.FUTURE_ANNOTATIONS,
+ Feature.ASSIGNMENT_EXPRESSIONS,
+ Feature.RELAXED_DECORATORS,
+ Feature.POS_ONLY_ARGUMENTS,
+ Feature.UNPACKING_ON_FLOW,
+ Feature.ANN_ASSIGN_EXTENDED_RHS,
+ Feature.PARENTHESIZED_CONTEXT_MANAGERS,
+ Feature.PATTERN_MATCHING,
+ },
+ TargetVersion.PY311: {
+ Feature.F_STRINGS,
+ Feature.DEBUG_F_STRINGS,
Feature.NUMERIC_UNDERSCORES,
Feature.TRAILING_COMMA_IN_CALL,
Feature.TRAILING_COMMA_IN_DEF,
Feature.POS_ONLY_ARGUMENTS,
Feature.UNPACKING_ON_FLOW,
Feature.ANN_ASSIGN_EXTENDED_RHS,
+ Feature.PARENTHESIZED_CONTEXT_MANAGERS,
Feature.PATTERN_MATCHING,
+ Feature.EXCEPT_STAR,
+ Feature.VARIADIC_GENERICS,
+ },
+ TargetVersion.PY312: {
+ Feature.F_STRINGS,
+ Feature.DEBUG_F_STRINGS,
+ Feature.NUMERIC_UNDERSCORES,
+ Feature.TRAILING_COMMA_IN_CALL,
+ Feature.TRAILING_COMMA_IN_DEF,
+ Feature.ASYNC_KEYWORDS,
+ Feature.FUTURE_ANNOTATIONS,
+ Feature.ASSIGNMENT_EXPRESSIONS,
+ Feature.RELAXED_DECORATORS,
+ Feature.POS_ONLY_ARGUMENTS,
+ Feature.UNPACKING_ON_FLOW,
+ Feature.ANN_ASSIGN_EXTENDED_RHS,
+ Feature.PARENTHESIZED_CONTEXT_MANAGERS,
+ Feature.PATTERN_MATCHING,
+ Feature.EXCEPT_STAR,
+ Feature.VARIADIC_GENERICS,
+ Feature.TYPE_PARAMS,
},
}
return all(feature in VERSION_TO_FEATURES[version] for version in target_versions)
+class Preview(Enum):
+ """Individual preview style features."""
+
+ add_trailing_comma_consistently = auto()
+ blank_line_after_nested_stub_class = auto()
+ hex_codes_in_unicode_sequences = auto()
+ improved_async_statements_handling = auto()
+ multiline_string_handling = auto()
+ no_blank_line_before_class_docstring = auto()
+ prefer_splitting_right_hand_side_of_assignments = auto()
+ # NOTE: string_processing requires wrap_long_dict_values_in_parens
+ # for https://github.com/psf/black/issues/3117 to be fixed.
+ string_processing = auto()
+ parenthesize_conditional_expressions = auto()
+ skip_magic_trailing_comma_in_subscript = auto()
+ wrap_long_dict_values_in_parens = auto()
+ wrap_multiple_context_managers_in_parens = auto()
+
+
+class Deprecated(UserWarning):
+ """Visible deprecation warning."""
+
+
@dataclass
class Mode:
target_versions: Set[TargetVersion] = field(default_factory=set)
string_normalization: bool = True
is_pyi: bool = False
is_ipynb: bool = False
+ skip_source_first_line: bool = False
magic_trailing_comma: bool = True
experimental_string_processing: bool = False
+ python_cell_magics: Set[str] = field(default_factory=set)
+ preview: bool = False
+
+ def __post_init__(self) -> None:
+ if self.experimental_string_processing:
+ warn(
+ "`experimental string processing` has been included in `preview`"
+ " and deprecated. Use `preview` instead.",
+ Deprecated,
+ )
+
+ def __contains__(self, feature: Preview) -> bool:
+ """
+ Provide `Preview.FEATURE in Mode` syntax that mirrors the ``preview`` flag.
+
+ The argument is not checked and features are not differentiated.
+ They only exist to make development easier by clarifying intent.
+ """
+ if feature is Preview.string_processing:
+ return self.preview or self.experimental_string_processing
+ return self.preview
def get_cache_key(self) -> str:
if self.target_versions:
str(int(self.string_normalization)),
str(int(self.is_pyi)),
str(int(self.is_ipynb)),
+ str(int(self.skip_source_first_line)),
str(int(self.magic_trailing_comma)),
str(int(self.experimental_string_processing)),
+ str(int(self.preview)),
+ sha256((",".join(sorted(self.python_cell_magics))).encode()).hexdigest(),
]
return ".".join(parts)
projects / etc / vim.git / blobdiff