X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/1dbe77cd917de67f721df48741d148ea7f642317..66a6be642c73a6a7fcf6229ec1fa0f1c7c7611b1:/black.py diff --git a/black.py b/black.py index ab2394e..3a51f21 100644 --- a/black.py +++ b/black.py @@ -170,7 +170,7 @@ def read_pyproject_toml( "--line-length", type=int, default=DEFAULT_LINE_LENGTH, - help="How many character per line to allow.", + help="How many characters per line to allow.", show_default=True, ) @click.option( @@ -431,52 +431,54 @@ async def schedule_formatting( sources, cached = filter_cached(cache, sources) for src in sorted(cached): report.done(src, Changed.CACHED) + if not sources: + return + cancelled = [] sources_to_cache = [] - if sources: - lock = None - if write_back == WriteBack.DIFF: - # For diff output, we need locks to ensure we don't interleave output - # from different processes. - manager = Manager() - lock = manager.Lock() - tasks = { - loop.run_in_executor( - executor, - format_file_in_place, - src, - line_length, - fast, - write_back, - mode, - lock, - ): src - for src in sorted(sources) - } - pending: Iterable[asyncio.Task] = tasks.keys() - try: - loop.add_signal_handler(signal.SIGINT, cancel, pending) - loop.add_signal_handler(signal.SIGTERM, cancel, pending) - except NotImplementedError: - # There are no good alternatives for these on Windows - pass - while pending: - done, _ = await asyncio.wait(pending, return_when=asyncio.FIRST_COMPLETED) - for task in done: - src = tasks.pop(task) - if task.cancelled(): - cancelled.append(task) - elif task.exception(): - report.failed(src, str(task.exception())) - else: - changed = Changed.YES if task.result() else Changed.NO - # If the file was written back or was successfully checked as - # well-formatted, store this information in the cache. - if write_back is WriteBack.YES or ( - write_back is WriteBack.CHECK and changed is Changed.NO - ): - sources_to_cache.append(src) - report.done(src, changed) + lock = None + if write_back == WriteBack.DIFF: + # For diff output, we need locks to ensure we don't interleave output + # from different processes. + manager = Manager() + lock = manager.Lock() + tasks = { + loop.run_in_executor( + executor, + format_file_in_place, + src, + line_length, + fast, + write_back, + mode, + lock, + ): src + for src in sorted(sources) + } + pending: Iterable[asyncio.Task] = tasks.keys() + try: + loop.add_signal_handler(signal.SIGINT, cancel, pending) + loop.add_signal_handler(signal.SIGTERM, cancel, pending) + except NotImplementedError: + # There are no good alternatives for these on Windows. + pass + while pending: + done, _ = await asyncio.wait(pending, return_when=asyncio.FIRST_COMPLETED) + for task in done: + src = tasks.pop(task) + if task.cancelled(): + cancelled.append(task) + elif task.exception(): + report.failed(src, str(task.exception())) + else: + changed = Changed.YES if task.result() else Changed.NO + # If the file was written back or was successfully checked as + # well-formatted, store this information in the cache. + if write_back is WriteBack.YES or ( + write_back is WriteBack.CHECK and changed is Changed.NO + ): + sources_to_cache.append(src) + report.done(src, changed) if cancelled: await asyncio.gather(*cancelled, loop=loop, return_exceptions=True) if sources_to_cache: @@ -875,8 +877,8 @@ class BracketTracker: bracket_match: Dict[Tuple[Depth, NodeType], Leaf] = Factory(dict) delimiters: Dict[LeafID, Priority] = Factory(dict) previous: Optional[Leaf] = None - _for_loop_variable: int = 0 - _lambda_arguments: int = 0 + _for_loop_depths: List[int] = Factory(list) + _lambda_argument_depths: List[int] = Factory(list) def mark(self, leaf: Leaf) -> None: """Mark `leaf` with bracket-related metadata. Keep track of delimiters. @@ -949,16 +951,21 @@ class BracketTracker: """ if leaf.type == token.NAME and leaf.value == "for": self.depth += 1 - self._for_loop_variable += 1 + self._for_loop_depths.append(self.depth) return True return False def maybe_decrement_after_for_loop_variable(self, leaf: Leaf) -> bool: """See `maybe_increment_for_loop_variable` above for explanation.""" - if self._for_loop_variable and leaf.type == token.NAME and leaf.value == "in": + if ( + self._for_loop_depths + and self._for_loop_depths[-1] == self.depth + and leaf.type == token.NAME + and leaf.value == "in" + ): self.depth -= 1 - self._for_loop_variable -= 1 + self._for_loop_depths.pop() return True return False @@ -971,16 +978,20 @@ class BracketTracker: """ if leaf.type == token.NAME and leaf.value == "lambda": self.depth += 1 - self._lambda_arguments += 1 + self._lambda_argument_depths.append(self.depth) return True return False def maybe_decrement_after_lambda_arguments(self, leaf: Leaf) -> bool: """See `maybe_increment_lambda_arguments` above for explanation.""" - if self._lambda_arguments and leaf.type == token.COLON: + if ( + self._lambda_argument_depths + and self._lambda_argument_depths[-1] == self.depth + and leaf.type == token.COLON + ): self.depth -= 1 - self._lambda_arguments -= 1 + self._lambda_argument_depths.pop() return True return False @@ -1162,7 +1173,7 @@ class Line: self.remove_trailing_comma() return True - # Otheriwsse, if the trailing one is the only one, we might mistakenly + # Otherwise, if the trailing one is the only one, we might mistakenly # change a tuple into a different type by removing the comma. depth = closing.bracket_depth + 1 commas = 0 @@ -1375,7 +1386,7 @@ class EmptyLineTracker: newlines = 1 elif current_line.is_class or self.previous_line.is_class: if current_line.is_stub_class and self.previous_line.is_stub_class: - # No blank line between classes with an emty body + # No blank line between classes with an empty body newlines = 0 else: newlines = 1 @@ -2509,30 +2520,32 @@ def normalize_string_quotes(leaf: Leaf) -> None: def normalize_numeric_literal(leaf: Leaf, allow_underscores: bool) -> None: - """Normalizes numeric (float, int, and complex) literals.""" - # We want all letters (e in exponents, j in complex literals, a-f - # in hex literals) to be lowercase. + """Normalizes numeric (float, int, and complex) literals. + + All letters used in the representation are normalized to lowercase (except + in Python 2 long literals), and long number literals are split using underscores. + """ text = leaf.value.lower() if text.startswith(("0o", "0x", "0b")): - # Leave octal, hex, and binary literals alone for now. + # Leave octal, hex, and binary literals alone. pass elif "e" in text: before, after = text.split("e") + sign = "" if after.startswith("-"): after = after[1:] sign = "-" elif after.startswith("+"): after = after[1:] - sign = "" - else: - sign = "" before = format_float_or_int_string(before, allow_underscores) after = format_int_string(after, allow_underscores) text = f"{before}e{sign}{after}" - # Complex numbers and Python 2 longs - elif "j" in text or "l" in text: + elif text.endswith(("j", "l")): number = text[:-1] suffix = text[-1] + # Capitalize in "2L" because "l" looks too similar to "1". + if suffix == "l": + suffix = "L" text = f"{format_float_or_int_string(number, allow_underscores)}{suffix}" else: text = format_float_or_int_string(text, allow_underscores) @@ -2543,24 +2556,40 @@ def format_float_or_int_string(text: str, allow_underscores: bool) -> str: """Formats a float string like "1.0".""" if "." not in text: return format_int_string(text, allow_underscores) + before, after = text.split(".") before = format_int_string(before, allow_underscores) if before else "0" - after = format_int_string(after, allow_underscores) if after else "0" + if after: + after = format_int_string(after, allow_underscores, count_from_end=False) + else: + after = "0" return f"{before}.{after}" -def format_int_string(text: str, allow_underscores: bool) -> str: +def format_int_string( + text: str, allow_underscores: bool, count_from_end: bool = True +) -> str: """Normalizes underscores in a string to e.g. 1_000_000. - Input must be a string consisting only of digits and underscores. + Input must be a string of digits and optional underscores. + If count_from_end is False, we add underscores after groups of three digits + counting from the beginning instead of the end of the strings. This is used + for the fractional part of float literals. """ if not allow_underscores: return text + text = text.replace("_", "") if len(text) <= 6: # No underscores for numbers <= 6 digits long. return text - return format(int(text), "3_") + + if count_from_end: + # Avoid removing leading zeros, which are important if we're formatting + # part of a number like "0.001". + return format(int("1" + text), "3_")[1:].lstrip("_") + else: + return "_".join(text[i : i + 3] for i in range(0, len(text), 3)) def normalize_invisible_parens(node: Node, parens_after: Set[str]) -> None: @@ -2581,7 +2610,11 @@ def normalize_invisible_parens(node: Node, parens_after: Set[str]) -> None: for index, child in enumerate(list(node.children)): if check_lpar: if child.type == syms.atom: - maybe_make_parens_invisible_in_atom(child) + if maybe_make_parens_invisible_in_atom(child): + lpar = Leaf(token.LPAR, "") + rpar = Leaf(token.RPAR, "") + index = child.remove() or 0 + node.insert_child(index, Node(syms.atom, [lpar, child, rpar])) elif is_one_tuple(child): # wrap child in visible parentheses lpar = Leaf(token.LPAR, "(") @@ -2689,7 +2722,11 @@ def generate_ignored_nodes(leaf: Leaf) -> Iterator[LN]: def maybe_make_parens_invisible_in_atom(node: LN) -> bool: - """If it's safe, make the parens in the atom `node` invisible, recursively.""" + """If it's safe, make the parens in the atom `node` invisible, recursively. + + Returns whether the node should itself be wrapped in invisible parentheses. + + """ if ( node.type != syms.atom or is_empty_tuple(node) @@ -2707,9 +2744,9 @@ def maybe_make_parens_invisible_in_atom(node: LN) -> bool: last.value = "" # type: ignore if len(node.children) > 1: maybe_make_parens_invisible_in_atom(node.children[1]) - return True + return False - return False + return True def is_empty_tuple(node: LN) -> bool: @@ -2887,7 +2924,8 @@ def is_python36(node: Node) -> bool: """Return True if the current file is using Python 3.6+ features. Currently looking for: - - f-strings; and + - f-strings; + - underscores in numeric literals; and - trailing commas after * or ** in function signatures and calls. """ for n in node.pre_order(): @@ -2896,6 +2934,10 @@ def is_python36(node: Node) -> bool: if value_head in {'f"', 'F"', "f'", "F'", "rf", "fr", "RF", "FR"}: return True + elif n.type == token.NUMBER: + if "_" in n.value: # type: ignore + return True + elif ( n.type in {syms.typedargslist, syms.arglist} and n.children @@ -3129,7 +3171,7 @@ class Report: - otherwise return 0. """ # According to http://tldp.org/LDP/abs/html/exitcodes.html starting with - # 126 we have special returncodes reserved by the shell. + # 126 we have special return codes reserved by the shell. if self.failure_count: return 123