]> git.madduck.net Git - etc/vim.git/blobdiff - src/black/comments.py

madduck's git repository

Every one of the projects in this repository is available at the canonical URL git://git.madduck.net/madduck/pub/<projectpath> — see each project's metadata for the exact URL.

All patches and comments are welcome. Please squash your changes to logical commits before using git-format-patch and git-send-email to patches@git.madduck.net. If you'd read over the Git project's submission guidelines and adhered to them, I'd be especially grateful.

SSH access, as well as push access can be individually arranged.

If you use my repositories frequently, consider adding the following snippet to ~/.gitconfig and using the third clone URL listed for each project:

[url "git://git.madduck.net/madduck/"]
  insteadOf = madduck:

Fix a crash when `# fmt: on` is used on a different block level than `# fmt: off...
[etc/vim.git] / src / black / comments.py
index 7069da165283aac12347a679707b8fc24fa8bea3..2a4c254ecd9119b2796c7116d92890d94c024981 100644 (file)
@@ -1,7 +1,7 @@
+import re
 import sys
 from dataclasses import dataclass
 from functools import lru_cache
-import re
 from typing import Iterator, List, Optional, Union
 
 if sys.version_info >= (3, 8):
@@ -9,11 +9,17 @@ if sys.version_info >= (3, 8):
 else:
     from typing_extensions import Final
 
-from blib2to3.pytree import Node, Leaf, type_repr
+from black.nodes import (
+    CLOSING_BRACKETS,
+    STANDALONE_COMMENT,
+    WHITESPACE,
+    container_of,
+    first_leaf_of,
+    preceding_leaf,
+    syms,
+)
 from blib2to3.pgen2 import token
-
-from black.nodes import first_leaf_column, preceding_leaf, container_of
-from black.nodes import CLOSING_BRACKETS, STANDALONE_COMMENT, WHITESPACE
+from blib2to3.pytree import Leaf, Node
 
 # types
 LN = Union[Leaf, Node]
@@ -225,7 +231,7 @@ def generate_ignored_nodes(
             return
 
         # fix for fmt: on in children
-        if contains_fmt_on_at_column(container, leaf.column, preview=preview):
+        if children_contains_fmt_on(container, preview=preview):
             for child in container.children:
                 if isinstance(child, Leaf) and is_fmt_on(child, preview=preview):
                     if child.type in CLOSING_BRACKETS:
@@ -235,10 +241,14 @@ def generate_ignored_nodes(
                         # The alternative is to fail the formatting.
                         yield child
                     return
-                if contains_fmt_on_at_column(child, leaf.column, preview=preview):
+                if children_contains_fmt_on(child, preview=preview):
                     return
                 yield child
         else:
+            if container.type == token.DEDENT and container.next_sibling is None:
+                # This can happen when there is no matching `# fmt: on` comment at the
+                # same level as `# fmt: on`. We need to keep this DEDENT.
+                return
             yield container
             container = container.next_sibling
 
@@ -263,9 +273,7 @@ def _generate_ignored_nodes_from_fmt_skip(
         for sibling in siblings:
             yield sibling
     elif (
-        parent is not None
-        and type_repr(parent.type) == "suite"
-        and leaf.type == token.NEWLINE
+        parent is not None and parent.type == syms.suite and leaf.type == token.NEWLINE
     ):
         # The `# fmt: skip` is on the colon line of the if/while/def/class/...
         # statements. The ignored nodes should be previous siblings of the
@@ -273,7 +281,7 @@ def _generate_ignored_nodes_from_fmt_skip(
         leaf.prefix = ""
         ignored_nodes: List[LN] = []
         parent_sibling = parent.prev_sibling
-        while parent_sibling is not None and type_repr(parent_sibling.type) != "suite":
+        while parent_sibling is not None and parent_sibling.type != syms.suite:
             ignored_nodes.insert(0, parent_sibling)
             parent_sibling = parent_sibling.prev_sibling
         # Special case for `async_stmt` where the ASYNC token is on the
@@ -301,17 +309,12 @@ def is_fmt_on(container: LN, preview: bool) -> bool:
     return fmt_on
 
 
-def contains_fmt_on_at_column(container: LN, column: int, *, preview: bool) -> bool:
-    """Determine if children at a given column have formatting switched on."""
+def children_contains_fmt_on(container: LN, *, preview: bool) -> bool:
+    """Determine if children have formatting switched on."""
     for child in container.children:
-        if (
-            isinstance(child, Node)
-            and first_leaf_column(child) == column
-            or isinstance(child, Leaf)
-            and child.column == column
-        ):
-            if is_fmt_on(child, preview=preview):
-                return True
+        leaf = first_leaf_of(child)
+        if leaf is not None and is_fmt_on(leaf, preview=preview):
+            return True
 
     return False