make black[jupyter] installation cross-shell (#3394)

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

diff --git a/src/black/nodes.py b/src/black/nodes.py
index 37b96a498d63f8ae067a555b8fb51642381a6181..aeb2be389c8cccb4f1321b0b04ad845571e4ba10 100644 (file)
--- a/src/black/nodes.py
+++ b/src/black/nodes.py
@@ -3,16 +3,7 @@ blib2to3 Node/Leaf transformation-related utility functions.
 """
 
 import sys
 """
 
 import sys

-from typing import (
-    Generic,
-    Iterator,
-    List,
-    Optional,
-    Set,
-    Tuple,
-    TypeVar,
-    Union,
-)
+from typing import Generic, Iterator, List, Optional, Set, Tuple, TypeVar, Union

 
 if sys.version_info >= (3, 8):
     from typing import Final
 
 if sys.version_info >= (3, 8):
     from typing import Final


@@ -25,14 +16,11 @@ else:
 
 from mypy_extensions import mypyc_attr
 
 
 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 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
 
 pygram.initialize(CACHE_DIR)
 syms: Final = pygram.python_symbols


@@ -120,6 +108,7 @@ TEST_DESCENDANTS: Final = {
     syms.term,
     syms.power,
 }
     syms.term,
     syms.power,
 }

+TYPED_NAMES: Final = {syms.tname, syms.tname_star}

 ASSIGNMENTS: Final = {
     "=",
     "+=",
 ASSIGNMENTS: Final = {
     "=",
     "+=",


@@ -243,6 +232,14 @@ def whitespace(leaf: Leaf, *, complex_subscript: bool) -> str:  # noqa: C901
                     # that, too.
                     return prevp.prefix
 
                     # 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
         elif prevp.type in VARARGS_SPECIALS:
             if is_vararg(prevp, within=VARARGS_PARENTS | UNPACKING_PARENTS):
                 return NO


@@ -281,7 +278,7 @@ def whitespace(leaf: Leaf, *, complex_subscript: bool) -> str:  # noqa: C901
             return NO
 
         if t == token.EQUAL:
             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:
                 return NO
 
         elif prev.type == token.EQUAL:


@@ -292,7 +289,7 @@ def whitespace(leaf: Leaf, *, complex_subscript: bool) -> str:  # noqa: C901
         elif prev.type != token.COMMA:
             return NO
 
         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)
         # type names
         if not prev:
             prevp = preceding_leaf(p)


@@ -505,12 +502,14 @@ def container_of(leaf: Leaf) -> LN:
     return container
 
 
     return container
 
 

-def first_leaf_column(node: Node) -> Optional[int]:
-    """Returns the column of the first leaf child of a node."""
-    for child in node.children:
-        if isinstance(child, Leaf):
-            return child.column
-    return None
+def first_leaf_of(node: LN) -> Optional[Leaf]:
+    """Returns the first leaf of the node tree."""
+    if isinstance(node, Leaf):
+        return node
+    if node.children:
+        return first_leaf_of(node.children[0])
+    else:
+        return None

 
 
 def is_arith_like(node: LN) -> bool:
 
 
 def is_arith_like(node: LN) -> bool:


@@ -845,3 +844,7 @@ def is_rpar_token(nl: NL) -> TypeGuard[Leaf]:
 
 def is_string_token(nl: NL) -> TypeGuard[Leaf]:
     return nl.type == token.STRING
 
 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