X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/55db05519ebfc502680aa55d289b7e47f6b2c6af..72a3408965f944f39f1080a5b67c25790acdc4e2:/src/black/nodes.py

diff --git a/src/black/nodes.py b/src/black/nodes.py
index aeb2be3..a11fb7c 100644
--- a/src/black/nodes.py
+++ b/src/black/nodes.py
@@ -848,3 +848,15 @@ def is_string_token(nl: NL) -> TypeGuard[Leaf]:
 
 def is_number_token(nl: NL) -> TypeGuard[Leaf]:
     return nl.type == token.NUMBER
+
+
+def is_part_of_annotation(leaf: Leaf) -> bool:
+    """Returns whether this leaf is part of type annotations."""
+    ancestor = leaf.parent
+    while ancestor is not None:
+        if ancestor.prev_sibling and ancestor.prev_sibling.type == token.RARROW:
+            return True
+        if ancestor.parent and ancestor.parent.type == syms.tname:
+            return True
+        ancestor = ancestor.parent
+    return False