From: Łukasz Langa Date: Mon, 28 Oct 2019 16:44:30 +0000 (+0100) Subject: Simplify some code flow X-Git-Url: https://git.madduck.net/etc/vim.git/commitdiff_plain/c1fe3aa4f81b39aeaf4a48138f7eedc73dfefc04?ds=inline;pf=etc Simplify some code flow Put empty lines after control flow changes. --- diff --git a/black.py b/black.py index 1c42f59..f0e83f8 100644 --- a/black.py +++ b/black.py @@ -1250,6 +1250,7 @@ class Line: """ if not self.leaves or len(self.leaves) < 4: return False + # Look for and address a trailing colon. if self.leaves[-1].type == token.COLON: closer = self.leaves[-2] @@ -1259,6 +1260,7 @@ class Line: close_index = -1 if closer.type not in CLOSING_BRACKETS or self.inside_brackets: return False + if closer.type == token.RPAR: # Tuples require an extra check, because if there's only # one element in the tuple removing the comma unmakes the @@ -1273,9 +1275,11 @@ class Line: for _open_index, leaf in enumerate(self.leaves): if leaf is opener: break + else: # Couldn't find the matching opening paren, play it safe. return False + commas = 0 comma_depth = self.leaves[close_index - 1].bracket_depth for leaf in self.leaves[_open_index + 1 : close_index]: @@ -1285,16 +1289,20 @@ class Line: # We haven't looked yet for the trailing comma because # we might also have caught noop parens. return self.leaves[close_index - 1].type == token.COMMA + elif commas == 1: return False # it's either a one-tuple or didn't have a trailing comma + if self.leaves[close_index - 1].type in CLOSING_BRACKETS: close_index -= 1 closer = self.leaves[close_index] if closer.type == token.RPAR: # TODO: this is a gut feeling. Will we ever see this? return False + if self.leaves[close_index - 1].type != token.COMMA: return False + return True @property @@ -1344,9 +1352,9 @@ class Line: def contains_standalone_comments(self, depth_limit: int = sys.maxsize) -> bool: """If so, needs to be split before emitting.""" for leaf in self.leaves: - if leaf.type == STANDALONE_COMMENT: - if leaf.bracket_depth <= depth_limit: - return True + if leaf.type == STANDALONE_COMMENT and leaf.bracket_depth <= depth_limit: + return True + return False def contains_uncollapsable_type_comments(self) -> bool: @@ -1424,6 +1432,7 @@ class Line: """Remove trailing comma if there is one and it's safe.""" if not (self.leaves and self.leaves[-1].type == token.COMMA): return False + # We remove trailing commas only in the case of importing a # single name from a module. if not ( @@ -1488,6 +1497,7 @@ class Line: comment.type = STANDALONE_COMMENT comment.prefix = "" return False + last_leaf = self.leaves[-2] self.comments.setdefault(id(last_leaf), []).append(comment) return True @@ -2619,11 +2629,11 @@ def bracket_split_build_line( for i in range(len(leaves) - 1, -1, -1): if leaves[i].type == STANDALONE_COMMENT: continue - elif leaves[i].type == token.COMMA: - break - else: + + if leaves[i].type != token.COMMA: leaves.insert(i + 1, Leaf(token.COMMA, ",")) - break + break + # Populate the line for leaf in leaves: result.append(leaf, preformatted=True) @@ -2867,6 +2877,7 @@ def normalize_string_quotes(leaf: Leaf) -> None: if "\\" in str(m): # Do not introduce backslashes in interpolated expressions return + if new_quote == '"""' and new_body[-1:] == '"': # edge case: new_body = new_body[:-1] + '\\"' @@ -2953,6 +2964,7 @@ def normalize_invisible_parens(node: Node, parens_after: Set[str]) -> None: if check_lpar: if is_walrus_assignment(child): continue + if child.type == syms.atom: # Determines if the underlying atom should be surrounded with # invisible params - also makes parens invisible recursively @@ -3147,6 +3159,7 @@ def unwrap_singleton_parenthesis(node: LN) -> Optional[LN]: Parenthesis can be optional. Returns None otherwise""" if len(node.children) != 3: return None + lpar, wrapped, rpar = node.children if not (lpar.type == token.LPAR and rpar.type == token.RPAR): return None @@ -3431,19 +3444,23 @@ def get_future_imports(node: Node) -> Set[str]: if isinstance(child, Leaf): if child.type == token.NAME: yield child.value + elif child.type == syms.import_as_name: orig_name = child.children[0] assert isinstance(orig_name, Leaf), "Invalid syntax parsing imports" assert orig_name.type == token.NAME, "Invalid syntax parsing imports" yield orig_name.value + elif child.type == syms.import_as_names: yield from get_imports_from_children(child.children) + else: raise AssertionError("Invalid syntax parsing imports") for child in node.children: if child.type != syms.simple_stmt: break + first_child = child.children[0] if isinstance(first_child, Leaf): # Continue looking if we see a docstring; otherwise stop. @@ -3453,15 +3470,18 @@ def get_future_imports(node: Node) -> Set[str]: and child.children[1].type == token.NEWLINE ): continue - else: - break + + break + elif first_child.type == syms.import_from: module_name = first_child.children[1] if not isinstance(module_name, Leaf) or module_name.value != "__future__": break + imports |= set(get_imports_from_children(first_child.children[3:])) else: break + return imports @@ -3504,6 +3524,7 @@ def gen_python_files_in_dir( except OSError as e: report.path_ignored(child, f"cannot be read because {e}") continue + except ValueError: if child.is_symlink(): report.path_ignored( @@ -3672,10 +3693,13 @@ def _fixup_ast_constants( """Map ast nodes deprecated in 3.8 to Constant.""" if isinstance(node, (ast.Str, ast3.Str, ast27.Str, ast.Bytes, ast3.Bytes)): return ast.Constant(value=node.s) + if isinstance(node, (ast.Num, ast3.Num, ast27.Num)): return ast.Constant(value=node.n) + if isinstance(node, (ast.NameConstant, ast3.NameConstant)): return ast.Constant(value=node.value) + return node @@ -3715,6 +3739,7 @@ def assert_equivalent(src: str, dst: str) -> None: ): for item in item.elts: yield from _v(item, depth + 2) + elif isinstance(item, (ast.AST, ast3.AST, ast27.AST)): yield from _v(item, depth + 2)