import os
from pathlib import Path
from pathspec.patterns.gitwildmatch import GitWildMatchPatternError
-import regex as re
+import re
import signal
import sys
import tokenize
Union,
)
-from dataclasses import replace
import click
+from dataclasses import replace
+from mypy_extensions import mypyc_attr
from black.const import DEFAULT_LINE_LENGTH, DEFAULT_INCLUDES, DEFAULT_EXCLUDES
from black.const import STDIN_PLACEHOLDER
from black.nodes import STARS, syms, is_simple_decorator_expression
+from black.nodes import is_string_token
from black.lines import Line, EmptyLineTracker
from black.linegen import transform_line, LineGenerator, LN
from black.comments import normalize_fmt_off
-from black.mode import Mode, TargetVersion
+from black.mode import FUTURE_FLAG_TO_FEATURE, Mode, TargetVersion
from black.mode import Feature, supports_feature, VERSION_TO_FEATURES
from black.cache import read_cache, write_cache, get_cache_info, filter_cached, Cache
from black.concurrency import cancel, shutdown, maybe_install_uvloop
remove_trailing_semicolon,
put_trailing_semicolon_back,
TRANSFORMED_MAGICS,
+ PYTHON_CELL_MAGICS,
jupyter_dependencies_are_installed,
)
from _black_version import version as __version__
+COMPILED = Path(__file__).suffix in (".pyd", ".so")
+
# types
FileContent = str
Encoding = str
# Legacy name, left for integrations.
FileMode = Mode
+DEFAULT_WORKERS = os.cpu_count()
+
def read_pyproject_toml(
ctx: click.Context, param: click.Parameter, value: Optional[str]
ctx: click.Context,
param: click.Parameter,
value: Optional[str],
-) -> Optional[Pattern]:
+) -> Optional[Pattern[str]]:
try:
return re_compile_maybe_verbose(value) if value is not None else None
- except re.error:
- raise click.BadParameter("Not a valid regular expression") from None
+ except re.error as e:
+ raise click.BadParameter(f"Not a valid regular expression: {e}") from None
-@click.command(context_settings=dict(help_option_names=["-h", "--help"]))
+@click.command(
+ context_settings={"help_option_names": ["-h", "--help"]},
+ # While Click does set this field automatically using the docstring, mypyc
+ # (annoyingly) strips 'em so we need to set it here too.
+ help="The uncompromising code formatter.",
+)
@click.option("-c", "--code", type=str, help="Format the code passed in as a string.")
@click.option(
"-l",
"editors that rely on using stdin."
),
)
+@click.option(
+ "-W",
+ "--workers",
+ type=click.IntRange(min=1),
+ default=DEFAULT_WORKERS,
+ show_default=True,
+ help="Number of parallel workers",
+)
@click.option(
"-q",
"--quiet",
" due to exclusion patterns."
),
)
-@click.version_option(version=__version__)
+@click.version_option(
+ version=__version__,
+ message=f"%(prog)s, %(version)s (compiled: {'yes' if COMPILED else 'no'})",
+)
@click.argument(
"src",
nargs=-1,
experimental_string_processing: bool,
quiet: bool,
verbose: bool,
- required_version: str,
- include: Pattern,
- exclude: Optional[Pattern],
- extend_exclude: Optional[Pattern],
- force_exclude: Optional[Pattern],
+ required_version: Optional[str],
+ include: Pattern[str],
+ exclude: Optional[Pattern[str]],
+ extend_exclude: Optional[Pattern[str]],
+ force_exclude: Optional[Pattern[str]],
stdin_filename: Optional[str],
+ workers: int,
src: Tuple[str, ...],
config: Optional[str],
) -> None:
write_back=write_back,
mode=mode,
report=report,
+ workers=workers,
)
if verbose or not quiet:
report.failed(src, str(exc))
+# diff-shades depends on being to monkeypatch this function to operate. I know it's
+# not ideal, but this shouldn't cause any issues ... hopefully. ~ichard26
+@mypyc_attr(patchable=True)
def reformat_many(
- sources: Set[Path], fast: bool, write_back: WriteBack, mode: Mode, report: "Report"
+ sources: Set[Path],
+ fast: bool,
+ write_back: WriteBack,
+ mode: Mode,
+ report: "Report",
+ workers: Optional[int],
) -> None:
"""Reformat multiple files using a ProcessPoolExecutor."""
executor: Executor
loop = asyncio.get_event_loop()
- worker_count = os.cpu_count()
+ worker_count = workers if workers is not None else DEFAULT_WORKERS
if sys.platform == "win32":
# Work around https://bugs.python.org/issue26903
+ assert worker_count is not None
worker_count = min(worker_count, 60)
try:
executor = ProcessPoolExecutor(max_workers=worker_count)
- except (ImportError, OSError):
+ except (ImportError, NotImplementedError, OSError):
# we arrive here if the underlying system does not support multi-processing
# like in AWS Lambda or Termux, in which case we gracefully fallback to
# a ThreadPoolExecutor with just a single worker (more workers would not do us
sources_to_cache.append(src)
report.done(src, changed)
if cancelled:
- await asyncio.gather(*cancelled, loop=loop, return_exceptions=True)
+ if sys.version_info >= (3, 7):
+ await asyncio.gather(*cancelled, return_exceptions=True)
+ else:
+ await asyncio.gather(*cancelled, loop=loop, return_exceptions=True)
if sources_to_cache:
write_cache(cache, sources_to_cache, mode)
def validate_cell(src: str) -> None:
- """Check that cell does not already contain TransformerManager transformations.
+ """Check that cell does not already contain TransformerManager transformations,
+ or non-Python cell magics, which might cause tokenizer_rt to break because of
+ indentations.
If a cell contains ``!ls``, then it'll be transformed to
``get_ipython().system('ls')``. However, if the cell originally contained
"""
if any(transformed_magic in src for transformed_magic in TRANSFORMED_MAGICS):
raise NothingChanged
+ if src[:2] == "%%" and src.split()[0][2:] not in PYTHON_CELL_MAGICS:
+ raise NothingChanged
def format_cell(src: str, *, fast: bool, mode: Mode) -> str:
if mode.target_versions:
versions = mode.target_versions
else:
- versions = detect_target_versions(src_node)
+ versions = detect_target_versions(src_node, future_imports=future_imports)
+
normalize_fmt_off(src_node)
- lines = LineGenerator(
- mode=mode,
- remove_u_prefix="unicode_literals" in future_imports
- or supports_feature(versions, Feature.UNICODE_LITERALS),
- )
+ lines = LineGenerator(mode=mode)
elt = EmptyLineTracker(is_pyi=mode.is_pyi)
empty_line = Line(mode=mode)
after = 0
return tiow.read(), encoding, newline
-def get_features_used(node: Node) -> Set[Feature]:
+def get_features_used( # noqa: C901
+ node: Node, *, future_imports: Optional[Set[str]] = None
+) -> Set[Feature]:
"""Return a set of (relatively) new Python features used in this file.
Currently looking for:
- positional only arguments in function signatures and lambdas;
- assignment expression;
- relaxed decorator syntax;
+ - usage of __future__ flags (annotations);
+ - print / exec statements;
"""
features: Set[Feature] = set()
+ if future_imports:
+ features |= {
+ FUTURE_FLAG_TO_FEATURE[future_import]
+ for future_import in future_imports
+ if future_import in FUTURE_FLAG_TO_FEATURE
+ }
+
for n in node.pre_order():
- if n.type == token.STRING:
- value_head = n.value[:2] # type: ignore
+ if is_string_token(n):
+ value_head = n.value[:2]
if value_head in {'f"', 'F"', "f'", "F'", "rf", "fr", "RF", "FR"}:
features.add(Feature.F_STRINGS)
elif n.type == token.NUMBER:
- if "_" in n.value: # type: ignore
+ assert isinstance(n, Leaf)
+ if "_" in n.value:
features.add(Feature.NUMERIC_UNDERSCORES)
elif n.type == token.SLASH:
- if n.parent and n.parent.type in {syms.typedargslist, syms.arglist}:
+ if n.parent and n.parent.type in {
+ syms.typedargslist,
+ syms.arglist,
+ syms.varargslist,
+ }:
features.add(Feature.POS_ONLY_ARGUMENTS)
elif n.type == token.COLONEQUAL:
if argch.type in STARS:
features.add(feature)
+ elif (
+ n.type in {syms.return_stmt, syms.yield_expr}
+ and len(n.children) >= 2
+ and n.children[1].type == syms.testlist_star_expr
+ and any(child.type == syms.star_expr for child in n.children[1].children)
+ ):
+ features.add(Feature.UNPACKING_ON_FLOW)
+
+ elif (
+ n.type == syms.annassign
+ and len(n.children) >= 4
+ and n.children[3].type == syms.testlist_star_expr
+ ):
+ features.add(Feature.ANN_ASSIGN_EXTENDED_RHS)
+
return features
-def detect_target_versions(node: Node) -> Set[TargetVersion]:
+def detect_target_versions(
+ node: Node, *, future_imports: Optional[Set[str]] = None
+) -> Set[TargetVersion]:
"""Detect the version to target based on the nodes used."""
- features = get_features_used(node)
+ features = get_features_used(node, future_imports=future_imports)
return {
version for version in TargetVersion if features <= VERSION_TO_FEATURES[version]
}
src_ast = parse_ast(src)
except Exception as exc:
raise AssertionError(
- "cannot use --safe with this file; failed to parse source file."
+ f"cannot use --safe with this file; failed to parse source file: {exc}"
) from exc
try:
"""
try:
from click import core
- from click import _unicodefun # type: ignore
+ from click import _unicodefun
except ModuleNotFoundError:
return
projects / etc / vim.git / blobdiff