X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/117891878e5be4d6b771ae5de299e51b679cea27..d85cf00ee80f00b25a819afef7f466dc871fa68d:/src/black/mode.py diff --git a/src/black/mode.py b/src/black/mode.py index 3c16756..32b65d1 100644 --- a/src/black/mode.py +++ b/src/black/mode.py @@ -4,16 +4,23 @@ Mostly around Python language feature support per version and Black configuratio 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 +from warnings import warn + +if sys.version_info < (3, 8): + from typing_extensions import Final +else: + from typing import Final from black.const import DEFAULT_LINE_LENGTH class TargetVersion(Enum): - PY27 = 2 PY33 = 3 PY34 = 4 PY35 = 5 @@ -22,14 +29,10 @@ class TargetVersion(Enum): PY38 = 8 PY39 = 9 PY310 = 10 - - def is_python2(self) -> bool: - return self is TargetVersion.PY27 + PY311 = 11 class Feature(Enum): - # All string literals are unicode - UNICODE_LITERALS = 1 F_STRINGS = 2 NUMERIC_UNDERSCORES = 3 TRAILING_COMMA_IN_CALL = 4 @@ -42,40 +45,26 @@ class Feature(Enum): POS_ONLY_ARGUMENTS = 9 RELAXED_DECORATORS = 10 PATTERN_MATCHING = 11 + UNPACKING_ON_FLOW = 12 + ANN_ASSIGN_EXTENDED_RHS = 13 + EXCEPT_STAR = 14 + VARIADIC_GENERICS = 15 FORCE_OPTIONAL_PARENTHESES = 50 - # 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__ flags + FUTURE_ANNOTATIONS = 51 + + +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, @@ -83,37 +72,68 @@ VERSION_TO_FEATURES: Dict[TargetVersion, Set[Feature]] = { Feature.ASYNC_IDENTIFIERS, }, TargetVersion.PY37: { - Feature.UNICODE_LITERALS, Feature.F_STRINGS, Feature.NUMERIC_UNDERSCORES, Feature.TRAILING_COMMA_IN_CALL, Feature.TRAILING_COMMA_IN_DEF, Feature.ASYNC_KEYWORDS, + Feature.FUTURE_ANNOTATIONS, }, TargetVersion.PY38: { - Feature.UNICODE_LITERALS, Feature.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.POS_ONLY_ARGUMENTS, + Feature.UNPACKING_ON_FLOW, + Feature.ANN_ASSIGN_EXTENDED_RHS, }, TargetVersion.PY39: { - Feature.UNICODE_LITERALS, Feature.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, }, TargetVersion.PY310: { + Feature.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.PATTERN_MATCHING, }, + TargetVersion.PY311: { + Feature.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.PATTERN_MATCHING, + Feature.EXCEPT_STAR, + Feature.VARIADIC_GENERICS, + }, } @@ -121,6 +141,22 @@ def supports_feature(target_versions: Set[TargetVersion], feature: Feature) -> b return all(feature in VERSION_TO_FEATURES[version] for version in target_versions) +class Preview(Enum): + """Individual preview style features.""" + + annotation_parens = auto() + long_docstring_quotes_on_newline = auto() + normalize_docstring_quotes_and_prefixes_properly = auto() + one_element_subscript = auto() + remove_block_trailing_newline = auto() + remove_redundant_parens = auto() + string_processing = auto() + + +class Deprecated(UserWarning): + """Visible deprecation warning.""" + + @dataclass class Mode: target_versions: Set[TargetVersion] = field(default_factory=set) @@ -130,6 +166,27 @@ class Mode: is_ipynb: 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: @@ -147,5 +204,7 @@ class Mode: str(int(self.is_ipynb)), 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)