PY36 = 6
PY37 = 7
PY38 = 8
+ PY39 = 9
def is_python2(self) -> bool:
return self is TargetVersion.PY27
-PY36_VERSIONS = {TargetVersion.PY36, TargetVersion.PY37, TargetVersion.PY38}
-
-
class Feature(Enum):
# All string literals are unicode
UNICODE_LITERALS = 1
ASYNC_KEYWORDS = 7
ASSIGNMENT_EXPRESSIONS = 8
POS_ONLY_ARGUMENTS = 9
+ RELAXED_DECORATORS = 10
FORCE_OPTIONAL_PARENTHESES = 50
Feature.ASSIGNMENT_EXPRESSIONS,
Feature.POS_ONLY_ARGUMENTS,
},
+ 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.ASSIGNMENT_EXPRESSIONS,
+ Feature.RELAXED_DECORATORS,
+ Feature.POS_ONLY_ARGUMENTS,
+ },
}
type=str,
help=(
"Like --exclude, but files and directories matching this regex will be "
- "excluded even when they are passed explicitly as arguments"
+ "excluded even when they are passed explicitly as arguments."
),
)
@click.option(
for i, line in enumerate(lines):
if line.startswith("+++") or line.startswith("---"):
line = "\033[1;37m" + line + "\033[0m" # bold white, reset
- if line.startswith("@@"):
+ elif line.startswith("@@"):
line = "\033[36m" + line + "\033[0m" # cyan, reset
- if line.startswith("+"):
+ elif line.startswith("+"):
line = "\033[32m" + line + "\033[0m" # green, reset
elif line.startswith("-"):
line = "\033[31m" + line + "\033[0m" # red, reset
def wrap_stream_for_windows(
f: io.TextIOWrapper,
-) -> Union[io.TextIOWrapper, "colorama.AnsiToWin32.AnsiToWin32"]:
+) -> Union[io.TextIOWrapper, "colorama.AnsiToWin32"]:
"""
- Wrap the stream in colorama's wrap_stream so colors are shown on Windows.
+ Wrap stream with colorama's wrap_stream so colors are shown on Windows.
- If `colorama` is not found, then no change is made. If `colorama` does
- exist, then it handles the logic to determine whether or not to change
- things.
+ If `colorama` is unavailable, the original stream is returned unmodified.
+ Otherwise, the `wrap_stream()` function determines whether the stream needs
+ to be wrapped for a Windows environment and will accordingly either return
+ an `AnsiToWin32` wrapper or the original stream.
"""
try:
- from colorama import initialise
-
- # We set `strip=False` so that we can don't have to modify
- # test_express_diff_with_color.
- f = initialise.wrap_stream(
- f, convert=None, strip=False, autoreset=False, wrap=True
- )
-
- # wrap_stream returns a `colorama.AnsiToWin32.AnsiToWin32` object
- # which does not have a `detach()` method. So we fake one.
- f.detach = lambda *args, **kwargs: None # type: ignore
+ from colorama.initialise import wrap_stream
except ImportError:
- pass
-
- return f
+ return f
+ else:
+ # Set `strip=False` to avoid needing to modify test_express_diff_with_color.
+ return wrap_stream(f, convert=None, strip=False, autoreset=False, wrap=True)
def format_stdin_to_stdout(
def format_file_contents(src_contents: str, *, fast: bool, mode: Mode) -> FileContent:
- """Reformat contents a file and return new contents.
+ """Reformat contents of a file and return new contents.
If `fast` is False, additionally confirm that the reformatted code is
valid by calling :func:`assert_equivalent` and :func:`assert_stable` on it.
):
# Python 2 print chevron
return NO
+ elif prevp.type == token.AT and p.parent and p.parent.type == syms.decorator:
+ # no space in decorators
+ return NO
elif prev.type in OPENING_BRACKETS:
return NO
return inner is not None and inner.type == syms.namedexpr_test
+def is_simple_decorator_trailer(node: LN, last: bool = False) -> bool:
+ """Return True iff `node` is a trailer valid in a simple decorator"""
+ return node.type == syms.trailer and (
+ (
+ len(node.children) == 2
+ and node.children[0].type == token.DOT
+ and node.children[1].type == token.NAME
+ )
+ # last trailer can be arguments
+ or (
+ last
+ and len(node.children) == 3
+ and node.children[0].type == token.LPAR
+ # and node.children[1].type == syms.argument
+ and node.children[2].type == token.RPAR
+ )
+ )
+
+
+def is_simple_decorator_expression(node: LN) -> bool:
+ """Return True iff `node` could be a 'dotted name' decorator
+
+ This function takes the node of the 'namedexpr_test' of the new decorator
+ grammar and test if it would be valid under the old decorator grammar.
+
+ The old grammar was: decorator: @ dotted_name [arguments] NEWLINE
+ The new grammar is : decorator: @ namedexpr_test NEWLINE
+ """
+ if node.type == token.NAME:
+ return True
+ if node.type == syms.power:
+ if node.children:
+ return (
+ node.children[0].type == token.NAME
+ and all(map(is_simple_decorator_trailer, node.children[1:-1]))
+ and (
+ len(node.children) < 2
+ or is_simple_decorator_trailer(node.children[-1], last=True)
+ )
+ )
+ return False
+
+
def is_yield(node: LN) -> bool:
"""Return True if `node` holds a `yield` or `yield from` expression."""
if node.type == syms.yield_expr:
- underscores in numeric literals;
- trailing commas after * or ** in function signatures and calls;
- positional only arguments in function signatures and lambdas;
+ - assignment expression;
+ - relaxed decorator syntax;
"""
features: Set[Feature] = set()
for n in node.pre_order():
elif n.type == token.COLONEQUAL:
features.add(Feature.ASSIGNMENT_EXPRESSIONS)
+ elif n.type == syms.decorator:
+ if len(n.children) > 1 and not is_simple_decorator_expression(
+ n.children[1]
+ ):
+ features.add(Feature.RELAXED_DECORATORS)
+
elif (
n.type in {syms.typedargslist, syms.arglist}
and n.children
projects / etc / vim.git / blobdiff