from blib2to3.pgen2 import driver, token
from blib2to3.pgen2.parse import ParseError
-__version__ = "18.3a1"
+__version__ = "18.3a2"
DEFAULT_LINE_LENGTH = 88
# types
syms = pygram.python_symbols
if leaf.type in CLOSING_BRACKETS:
self.depth -= 1
opening_bracket = self.bracket_match.pop((self.depth, leaf.type))
- leaf.opening_bracket = opening_bracket # type: ignore
- leaf.bracket_depth = self.depth # type: ignore
+ leaf.opening_bracket = opening_bracket
+ leaf.bracket_depth = self.depth
if self.depth == 0:
delim = is_delimiter(leaf)
if delim:
# For parens let's check if it's safe to remove the comma. 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 # type: ignore
+ depth = closing.bracket_depth + 1
commas = 0
- opening = closing.opening_bracket # type: ignore
+ opening = closing.opening_bracket
for _opening_index, leaf in enumerate(self.leaves):
if leaf is opening:
break
if leaf is closing:
break
- bracket_depth = leaf.bracket_depth # type: ignore
+ bracket_depth = leaf.bracket_depth
if bracket_depth == depth and leaf.type == token.COMMA:
commas += 1
+ if leaf.parent and leaf.parent.type == syms.arglist:
+ commas += 1
+ break
+
if commas > 1:
self.leaves.pop()
return True
OPENING_BRACKETS = set(BRACKET.keys())
CLOSING_BRACKETS = set(BRACKET.values())
BRACKETS = OPENING_BRACKETS | CLOSING_BRACKETS
+ALWAYS_NO_SPACE = CLOSING_BRACKETS | {token.COMMA, token.COLON, STANDALONE_COMMENT}
-def whitespace(leaf: Leaf) -> str:
+def whitespace(leaf: Leaf) -> str: # noqa C901
"""Return whitespace prefix if needed for the given `leaf`."""
NO = ''
SPACE = ' '
t = leaf.type
p = leaf.parent
v = leaf.value
- if t == token.COLON:
- return NO
-
- if t == token.COMMA:
- return NO
-
- if t == token.RPAR:
+ if t in ALWAYS_NO_SPACE:
return NO
if t == token.COMMENT:
return DOUBLESPACE
- if t == STANDALONE_COMMENT:
- return NO
-
- if t in CLOSING_BRACKETS:
- return NO
-
assert p is not None, f"INTERNAL ERROR: hand-made leaf without parent: {leaf!r}"
prev = leaf.prev_sibling
if not prev:
if prevp.parent and prevp.parent.type == syms.subscript:
return NO
- elif prevp.parent and prevp.parent.type == syms.factor:
+ elif prevp.parent and prevp.parent.type in {syms.factor, syms.star_expr}:
return NO
elif prev.type in OPENING_BRACKETS:
elif p.type == syms.subscript:
# indexing
- if not prev or prev.type == token.COLON:
+ if not prev:
+ assert p.parent is not None, "subscripts are always parented"
+ if p.parent.type == syms.subscriptlist:
+ return SPACE
+
+ return NO
+
+ elif prev.type == token.COLON:
return NO
elif p.type == syms.atom:
if prev.type == token.DOUBLESTAR:
return NO
- elif p.type == syms.factor or p.type == syms.star_expr:
+ elif p.type in {syms.factor, syms.star_expr}:
# unary ops
if not prev:
prevp = preceding_leaf(p)
if (
current_leaves is body_leaves and
leaf.type in CLOSING_BRACKETS and
- leaf.opening_bracket is matching_bracket # type: ignore
+ leaf.opening_bracket is matching_bracket
):
- current_leaves = tail_leaves
+ current_leaves = tail_leaves if body_leaves else head_leaves
current_leaves.append(leaf)
if current_leaves is head_leaves:
if leaf.type in OPENING_BRACKETS:
comment_after = line.comments.get(id(leaf))
if comment_after:
result.append(comment_after, preformatted=True)
- # Check if the split succeeded.
- tail_len = len(str(tail))
- if not body:
- if tail_len == 0:
- raise CannotSplit("Splitting brackets produced the same line")
-
- elif tail_len < 3:
- raise CannotSplit(
- f"Splitting brackets on an empty body to save "
- f"{tail_len} characters is not worth it"
- )
-
+ split_succeeded_or_raise(head, body, tail)
for result in (head, body, tail):
if result:
yield result
for leaf in reversed(line.leaves):
if current_leaves is body_leaves:
if leaf is opening_bracket:
- current_leaves = head_leaves
+ current_leaves = head_leaves if body_leaves else tail_leaves
current_leaves.append(leaf)
if current_leaves is tail_leaves:
if leaf.type in CLOSING_BRACKETS:
- opening_bracket = leaf.opening_bracket # type: ignore
+ opening_bracket = leaf.opening_bracket
current_leaves = body_leaves
tail_leaves.reverse()
body_leaves.reverse()
comment_after = line.comments.get(id(leaf))
if comment_after:
result.append(comment_after, preformatted=True)
- # Check if the split succeeded.
- tail_len = len(str(tail).strip('\n'))
+ split_succeeded_or_raise(head, body, tail)
+ for result in (head, body, tail):
+ if result:
+ yield result
+
+
+def split_succeeded_or_raise(head: Line, body: Line, tail: Line) -> None:
+ tail_len = len(str(tail).strip())
if not body:
if tail_len == 0:
raise CannotSplit("Splitting brackets produced the same line")
f"{tail_len} characters is not worth it"
)
- for result in (head, body, tail):
- if result:
- yield result
-
def delimiter_split(line: Line, py36: bool = False) -> Iterator[Line]:
"""Split according to delimiters of the highest priority.
current_line.append(comment_after, preformatted=True)
lowest_depth = min(lowest_depth, leaf.bracket_depth)
if (
- leaf.bracket_depth == lowest_depth and # type: ignore
+ leaf.bracket_depth == lowest_depth and
leaf.type == token.STAR or
leaf.type == token.DOUBLESTAR
):
"""
for n in node.pre_order():
if n.type == token.STRING:
- assert isinstance(n, Leaf)
- if n.value[:2] in {'f"', 'F"', "f'", "F'", 'rf', 'fr', 'RF', 'FR'}:
+ value_head = n.value[:2] # type: ignore
+ if value_head in {'f"', 'F"', "f'", "F'", 'rf', 'fr', 'RF', 'FR'}:
return True
elif (
raise AssertionError(
f"INTERNAL ERROR: Black produced invalid code: {exc}. "
f"Please report a bug on https://github.com/ambv/black/issues. "
- f"This invalid output might be helpful: {log}",
+ f"This invalid output might be helpful: {log}"
) from None
src_ast_str = '\n'.join(_v(src_ast))
f"INTERNAL ERROR: Black produced code that is not equivalent to "
f"the source. "
f"Please report a bug on https://github.com/ambv/black/issues. "
- f"This diff might be helpful: {log}",
+ f"This diff might be helpful: {log}"
) from None
f"INTERNAL ERROR: Black produced different code on the second pass "
f"of the formatter. "
f"Please report a bug on https://github.com/ambv/black/issues. "
- f"This diff might be helpful: {log}",
+ f"This diff might be helpful: {log}"
) from None
projects / etc / vim.git / blobdiff