X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/6417c99bfdbdc057e4a10aeff9967a751f4f85e9..afed2c01903465f9a486ac481a66aa3413cc1b01:/src/black/trans.py diff --git a/src/black/trans.py b/src/black/trans.py index 74d052f..9e0284c 100644 --- a/src/black/trans.py +++ b/src/black/trans.py @@ -1,10 +1,11 @@ """ String transformers that can split and merge strings. """ +import re +import sys from abc import ABC, abstractmethod from collections import defaultdict from dataclasses import dataclass -import re from typing import ( Any, Callable, @@ -21,29 +22,38 @@ from typing import ( TypeVar, Union, ) -import sys if sys.version_info < (3, 8): - from typing_extensions import Literal, Final + from typing_extensions import Final, Literal else: from typing import Literal, Final from mypy_extensions import trait -from black.rusty import Result, Ok, Err - -from black.mode import Feature -from black.nodes import syms, replace_child, parent_type -from black.nodes import is_empty_par, is_empty_lpar, is_empty_rpar -from black.nodes import OPENING_BRACKETS, CLOSING_BRACKETS, STANDALONE_COMMENT -from black.lines import Line, append_leaves from black.brackets import BracketMatchError from black.comments import contains_pragma_comment -from black.strings import has_triple_quotes, get_string_prefix, assert_is_leaf_string -from black.strings import normalize_string_quotes - -from blib2to3.pytree import Leaf, Node +from black.lines import Line, append_leaves +from black.mode import Feature +from black.nodes import ( + CLOSING_BRACKETS, + OPENING_BRACKETS, + STANDALONE_COMMENT, + is_empty_lpar, + is_empty_par, + is_empty_rpar, + parent_type, + replace_child, + syms, +) +from black.rusty import Err, Ok, Result +from black.strings import ( + assert_is_leaf_string, + get_string_prefix, + has_triple_quotes, + normalize_string_quotes, +) from blib2to3.pgen2 import token +from blib2to3.pytree import Leaf, Node class CannotTransform(Exception): @@ -121,7 +131,7 @@ def hug_power_op(line: Line, features: Collection[Feature]) -> Iterator[Line]: return False - leaves: List[Leaf] = [] + new_line = line.clone() should_hug = False for idx, leaf in enumerate(line.leaves): new_leaf = leaf.clone() @@ -139,18 +149,14 @@ def hug_power_op(line: Line, features: Collection[Feature]) -> Iterator[Line]: if should_hug: new_leaf.prefix = "" - leaves.append(new_leaf) - - yield Line( - mode=line.mode, - depth=line.depth, - leaves=leaves, - comments=line.comments, - bracket_tracker=line.bracket_tracker, - inside_brackets=line.inside_brackets, - should_split_rhs=line.should_split_rhs, - magic_trailing_comma=line.magic_trailing_comma, - ) + # We have to be careful to make a new line properly: + # - bracket related metadata must be maintained (handled by Line.append) + # - comments need to copied over, updating the leaf IDs they're attached to + new_line.append(new_leaf, preformatted=True) + for comment_leaf in line.comments_after(leaf): + new_line.append(comment_leaf, preformatted=True) + + yield new_line class StringTransformer(ABC): @@ -365,7 +371,7 @@ class StringMerger(StringTransformer, CustomSplitMapMixin): is_valid_index = is_valid_index_factory(LL) - for (i, leaf) in enumerate(LL): + for i, leaf in enumerate(LL): if ( leaf.type == token.STRING and is_valid_index(i + 1) @@ -547,6 +553,9 @@ class StringMerger(StringTransformer, CustomSplitMapMixin): next_str_idx += 1 + # Take a note on the index of the non-STRING leaf. + non_string_idx = next_str_idx + S_leaf = Leaf(token.STRING, S) if self.normalize_strings: S_leaf.value = normalize_string_quotes(S_leaf.value) @@ -566,11 +575,22 @@ class StringMerger(StringTransformer, CustomSplitMapMixin): string_leaf = Leaf(token.STRING, S_leaf.value.replace(BREAK_MARK, "")) if atom_node is not None: - replace_child(atom_node, string_leaf) + # If not all children of the atom node are merged (this can happen + # when there is a standalone comment in the middle) ... + if non_string_idx - string_idx < len(atom_node.children): + # We need to replace the old STRING leaves with the new string leaf. + first_child_idx = LL[string_idx].remove() + for idx in range(string_idx + 1, non_string_idx): + LL[idx].remove() + if first_child_idx is not None: + atom_node.insert_child(first_child_idx, string_leaf) + else: + # Else replace the atom node with the new string leaf. + replace_child(atom_node, string_leaf) # Build the final line ('new_line') that this method will later return. new_line = line.clone() - for (i, leaf) in enumerate(LL): + for i, leaf in enumerate(LL): if i == string_idx: new_line.append(string_leaf) @@ -691,7 +711,7 @@ class StringParenStripper(StringTransformer): is_valid_index = is_valid_index_factory(LL) - for (idx, leaf) in enumerate(LL): + for idx, leaf in enumerate(LL): # Should be a string... if leaf.type != token.STRING: continue @@ -1713,7 +1733,7 @@ class StringParenWrapper(BaseStringSplitter, CustomSplitMapMixin): if parent_type(LL[0]) == syms.assert_stmt and LL[0].value == "assert": is_valid_index = is_valid_index_factory(LL) - for (i, leaf) in enumerate(LL): + for i, leaf in enumerate(LL): # We MUST find a comma... if leaf.type == token.COMMA: idx = i + 2 if is_empty_par(LL[i + 1]) else i + 1 @@ -1751,7 +1771,7 @@ class StringParenWrapper(BaseStringSplitter, CustomSplitMapMixin): ): is_valid_index = is_valid_index_factory(LL) - for (i, leaf) in enumerate(LL): + for i, leaf in enumerate(LL): # We MUST find either an '=' or '+=' symbol... if leaf.type in [token.EQUAL, token.PLUSEQUAL]: idx = i + 2 if is_empty_par(LL[i + 1]) else i + 1 @@ -1794,7 +1814,7 @@ class StringParenWrapper(BaseStringSplitter, CustomSplitMapMixin): if syms.dictsetmaker in [parent_type(LL[0]), parent_type(LL[0].parent)]: is_valid_index = is_valid_index_factory(LL) - for (i, leaf) in enumerate(LL): + for i, leaf in enumerate(LL): # We MUST find a colon... if leaf.type == token.COLON: idx = i + 2 if is_empty_par(LL[i + 1]) else i + 1