Fix a crash on dicts with paren-wrapped long string keys (#3262)

[etc/vim.git] / src / black / nodes.py

diff --git a/src/black/nodes.py b/src/black/nodes.py
index f130bff990e1622c3555f65262f12c0e7d65ff2d..8f341ab35d63e6e9212489bc1f4bdaf8de04909e 100644 (file)
--- a/src/black/nodes.py
+++ b/src/black/nodes.py
@@ -3,15 +3,7 @@ blib2to3 Node/Leaf transformation-related utility functions.
 """
 
 import sys
-from typing import (
-    Generic,
-    Iterator,
-    List,
-    Optional,
-    Set,
-    TypeVar,
-    Union,
-)
+from typing import Generic, Iterator, List, Optional, Set, Tuple, TypeVar, Union
 
 if sys.version_info >= (3, 8):
     from typing import Final
@@ -24,14 +16,11 @@ else:
 
 from mypy_extensions import mypyc_attr
 
-# lib2to3 fork
-from blib2to3.pytree import Node, Leaf, type_repr, NL
-from blib2to3 import pygram
-from blib2to3.pgen2 import token
-
 from black.cache import CACHE_DIR
 from black.strings import has_triple_quotes
-
+from blib2to3 import pygram
+from blib2to3.pgen2 import token
+from blib2to3.pytree import NL, Leaf, Node, type_repr
 
 pygram.initialize(CACHE_DIR)
 syms: Final = pygram.python_symbols
@@ -119,6 +108,7 @@ TEST_DESCENDANTS: Final = {
     syms.term,
     syms.power,
 }
+TYPED_NAMES: Final = {syms.tname, syms.tname_star}
 ASSIGNMENTS: Final = {
     "=",
     "+=",
@@ -242,6 +232,14 @@ def whitespace(leaf: Leaf, *, complex_subscript: bool) -> str:  # noqa: C901
                     # that, too.
                     return prevp.prefix
 
+        elif (
+            prevp.type == token.STAR
+            and parent_type(prevp) == syms.star_expr
+            and parent_type(prevp.parent) == syms.subscriptlist
+        ):
+            # No space between typevar tuples.
+            return NO
+
         elif prevp.type in VARARGS_SPECIALS:
             if is_vararg(prevp, within=VARARGS_PARENTS | UNPACKING_PARENTS):
                 return NO
@@ -280,7 +278,7 @@ def whitespace(leaf: Leaf, *, complex_subscript: bool) -> str:  # noqa: C901
             return NO
 
         if t == token.EQUAL:
-            if prev.type != syms.tname:
+            if prev.type not in TYPED_NAMES:
                 return NO
 
         elif prev.type == token.EQUAL:
@@ -291,7 +289,7 @@ def whitespace(leaf: Leaf, *, complex_subscript: bool) -> str:  # noqa: C901
         elif prev.type != token.COMMA:
             return NO
 
-    elif p.type == syms.tname:
+    elif p.type in TYPED_NAMES:
         # type names
         if not prev:
             prevp = preceding_leaf(p)
@@ -400,6 +398,10 @@ def whitespace(leaf: Leaf, *, complex_subscript: bool) -> str:  # noqa: C901
     elif p.type == syms.sliceop:
         return NO
 
+    elif p.type == syms.except_clause:
+        if t == token.STAR:
+            return NO
+
     return SPACE
 
 
@@ -559,9 +561,14 @@ def is_one_tuple(node: LN) -> bool:
     )
 
 
-def is_one_tuple_between(opening: Leaf, closing: Leaf, leaves: List[Leaf]) -> bool:
-    """Return True if content between `opening` and `closing` looks like a one-tuple."""
-    if opening.type != token.LPAR and closing.type != token.RPAR:
+def is_one_sequence_between(
+    opening: Leaf,
+    closing: Leaf,
+    leaves: List[Leaf],
+    brackets: Tuple[int, int] = (token.LPAR, token.RPAR),
+) -> bool:
+    """Return True if content between `opening` and `closing` is a one-sequence."""
+    if (opening.type, closing.type) != brackets:
         return False
 
     depth = closing.bracket_depth + 1
@@ -835,3 +842,7 @@ def is_rpar_token(nl: NL) -> TypeGuard[Leaf]:
 
 def is_string_token(nl: NL) -> TypeGuard[Leaf]:
     return nl.type == token.STRING
+
+
+def is_number_token(nl: NL) -> TypeGuard[Leaf]:
+    return nl.type == token.NUMBER