472 lines
18 KiB
Python
472 lines
18 KiB
Python
|
# Copyright 2016 Grist Labs, Inc.
|
||
|
|
#
|
||
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
# you may not use this file except in compliance with the License.
|
||
|
|
# You may obtain a copy of the License at
|
||
|
|
#
|
||
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
#
|
||
|
|
# Unless required by applicable law or agreed to in writing, software
|
||
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
# See the License for the specific language governing permissions and
|
||
|
|
# limitations under the License.
|
||
|
|
|
||
|
|
import abc
|
||
|
|
import ast
|
||
|
|
import bisect
|
||
|
|
import sys
|
||
|
|
import token
|
||
|
|
from ast import Module
|
||
|
|
from typing import Iterable, Iterator, List, Optional, Tuple, Any, cast, TYPE_CHECKING
|
||
|
|
|
||
|
|
import six
|
||
|
|
from six.moves import xrange # pylint: disable=redefined-builtin
|
||
|
|
|
||
|
|
from .line_numbers import LineNumbers
|
||
|
|
from .util import (
|
||
|
|
Token, match_token, is_non_coding_token, patched_generate_tokens, last_stmt,
|
||
|
|
annotate_fstring_nodes, generate_tokens, is_module, is_stmt
|
||
|
|
)
|
||
|
|
|
||
|
|
if TYPE_CHECKING: # pragma: no cover
|
||
|
|
from .util import AstNode, TokenInfo
|
||
|
|
|
||
|
|
|
||
|
|
class ASTTextBase(six.with_metaclass(abc.ABCMeta, object)):
|
||
|
|
def __init__(self, source_text, filename):
|
||
|
|
# type: (Any, str) -> None
|
||
|
|
# FIXME: Strictly, the type of source_text is one of the six string types, but hard to specify with mypy given
|
||
|
|
# https://mypy.readthedocs.io/en/stable/common_issues.html#variables-vs-type-aliases
|
||
|
|
|
||
|
|
self._filename = filename
|
||
|
|
|
||
|
|
# Decode source after parsing to let Python 2 handle coding declarations.
|
||
|
|
# (If the encoding was not utf-8 compatible, then even if it parses correctly,
|
||
|
|
# we'll fail with a unicode error here.)
|
||
|
|
source_text = six.ensure_text(source_text)
|
||
|
|
|
||
|
|
self._text = source_text
|
||
|
|
self._line_numbers = LineNumbers(source_text)
|
||
|
|
|
||
|
|
@abc.abstractmethod
|
||
|
|
def get_text_positions(self, node, padded):
|
||
|
|
# type: (AstNode, bool) -> Tuple[Tuple[int, int], Tuple[int, int]]
|
||
|
|
"""
|
||
|
|
Returns two ``(lineno, col_offset)`` tuples for the start and end of the given node.
|
||
|
|
If the positions can't be determined, or the nodes don't correspond to any particular text,
|
||
|
|
returns ``(1, 0)`` for both.
|
||
|
|
|
||
|
|
``padded`` corresponds to the ``padded`` argument to ``ast.get_source_segment()``.
|
||
|
|
This means that if ``padded`` is True, the start position will be adjusted to include
|
||
|
|
leading whitespace if ``node`` is a multiline statement.
|
||
|
|
"""
|
||
|
|
raise NotImplementedError # pragma: no cover
|
||
|
|
|
||
|
|
def get_text_range(self, node, padded=True):
|
||
|
|
# type: (AstNode, bool) -> Tuple[int, int]
|
||
|
|
"""
|
||
|
|
Returns the (startpos, endpos) positions in source text corresponding to the given node.
|
||
|
|
Returns (0, 0) for nodes (like `Load`) that don't correspond to any particular text.
|
||
|
|
|
||
|
|
See ``get_text_positions()`` for details on the ``padded`` argument.
|
||
|
|
"""
|
||
|
|
start, end = self.get_text_positions(node, padded)
|
||
|
|
return (
|
||
|
|
self._line_numbers.line_to_offset(*start),
|
||
|
|
self._line_numbers.line_to_offset(*end),
|
||
|
|
)
|
||
|
|
|
||
|
|
def get_text(self, node, padded=True):
|
||
|
|
# type: (AstNode, bool) -> str
|
||
|
|
"""
|
||
|
|
Returns the text corresponding to the given node.
|
||
|
|
Returns '' for nodes (like `Load`) that don't correspond to any particular text.
|
||
|
|
|
||
|
|
See ``get_text_positions()`` for details on the ``padded`` argument.
|
||
|
|
"""
|
||
|
|
start, end = self.get_text_range(node, padded)
|
||
|
|
return self._text[start: end]
|
||
|
|
|
||
|
|
|
||
|
|
class ASTTokens(ASTTextBase, object):
|
||
|
|
"""
|
||
|
|
ASTTokens maintains the text of Python code in several forms: as a string, as line numbers, and
|
||
|
|
as tokens, and is used to mark and access token and position information.
|
||
|
|
|
||
|
|
``source_text`` must be a unicode or UTF8-encoded string. If you pass in UTF8 bytes, remember
|
||
|
|
that all offsets you'll get are to the unicode text, which is available as the ``.text``
|
||
|
|
property.
|
||
|
|
|
||
|
|
If ``parse`` is set, the ``source_text`` will be parsed with ``ast.parse()``, and the resulting
|
||
|
|
tree marked with token info and made available as the ``.tree`` property.
|
||
|
|
|
||
|
|
If ``tree`` is given, it will be marked and made available as the ``.tree`` property. In
|
||
|
|
addition to the trees produced by the ``ast`` module, ASTTokens will also mark trees produced
|
||
|
|
using ``astroid`` library <https://www.astroid.org>.
|
||
|
|
|
||
|
|
If only ``source_text`` is given, you may use ``.mark_tokens(tree)`` to mark the nodes of an AST
|
||
|
|
tree created separately.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(self, source_text, parse=False, tree=None, filename='<unknown>', tokens=None):
|
||
|
|
# type: (Any, bool, Optional[Module], str, Iterable[TokenInfo]) -> None
|
||
|
|
# FIXME: Strictly, the type of source_text is one of the six string types, but hard to specify with mypy given
|
||
|
|
# https://mypy.readthedocs.io/en/stable/common_issues.html#variables-vs-type-aliases
|
||
|
|
|
||
|
|
super(ASTTokens, self).__init__(source_text, filename)
|
||
|
|
|
||
|
|
self._tree = ast.parse(source_text, filename) if parse else tree
|
||
|
|
|
||
|
|
# Tokenize the code.
|
||
|
|
if tokens is None:
|
||
|
|
tokens = generate_tokens(self._text)
|
||
|
|
self._tokens = list(self._translate_tokens(tokens))
|
||
|
|
|
||
|
|
# Extract the start positions of all tokens, so that we can quickly map positions to tokens.
|
||
|
|
self._token_offsets = [tok.startpos for tok in self._tokens]
|
||
|
|
|
||
|
|
if self._tree:
|
||
|
|
self.mark_tokens(self._tree)
|
||
|
|
|
||
|
|
def mark_tokens(self, root_node):
|
||
|
|
# type: (Module) -> None
|
||
|
|
"""
|
||
|
|
Given the root of the AST or Astroid tree produced from source_text, visits all nodes marking
|
||
|
|
them with token and position information by adding ``.first_token`` and
|
||
|
|
``.last_token``attributes. This is done automatically in the constructor when ``parse`` or
|
||
|
|
``tree`` arguments are set, but may be used manually with a separate AST or Astroid tree.
|
||
|
|
"""
|
||
|
|
# The hard work of this class is done by MarkTokens
|
||
|
|
from .mark_tokens import MarkTokens # to avoid import loops
|
||
|
|
MarkTokens(self).visit_tree(root_node)
|
||
|
|
|
||
|
|
def _translate_tokens(self, original_tokens):
|
||
|
|
# type: (Iterable[TokenInfo]) -> Iterator[Token]
|
||
|
|
"""
|
||
|
|
Translates the given standard library tokens into our own representation.
|
||
|
|
"""
|
||
|
|
for index, tok in enumerate(patched_generate_tokens(original_tokens)):
|
||
|
|
tok_type, tok_str, start, end, line = tok
|
||
|
|
yield Token(tok_type, tok_str, start, end, line, index,
|
||
|
|
self._line_numbers.line_to_offset(start[0], start[1]),
|
||
|
|
self._line_numbers.line_to_offset(end[0], end[1]))
|
||
|
|
|
||
|
|
@property
|
||
|
|
def text(self):
|
||
|
|
# type: () -> str
|
||
|
|
"""The source code passed into the constructor."""
|
||
|
|
return self._text
|
||
|
|
|
||
|
|
@property
|
||
|
|
def tokens(self):
|
||
|
|
# type: () -> List[Token]
|
||
|
|
"""The list of tokens corresponding to the source code from the constructor."""
|
||
|
|
return self._tokens
|
||
|
|
|
||
|
|
@property
|
||
|
|
def tree(self):
|
||
|
|
# type: () -> Optional[Module]
|
||
|
|
"""The root of the AST tree passed into the constructor or parsed from the source code."""
|
||
|
|
return self._tree
|
||
|
|
|
||
|
|
@property
|
||
|
|
def filename(self):
|
||
|
|
# type: () -> str
|
||
|
|
"""The filename that was parsed"""
|
||
|
|
return self._filename
|
||
|
|
|
||
|
|
def get_token_from_offset(self, offset):
|
||
|
|
# type: (int) -> Token
|
||
|
|
"""
|
||
|
|
Returns the token containing the given character offset (0-based position in source text),
|
||
|
|
or the preceeding token if the position is between tokens.
|
||
|
|
"""
|
||
|
|
return self._tokens[bisect.bisect(self._token_offsets, offset) - 1]
|
||
|
|
|
||
|
|
def get_token(self, lineno, col_offset):
|
||
|
|
# type: (int, int) -> Token
|
||
|
|
"""
|
||
|
|
Returns the token containing the given (lineno, col_offset) position, or the preceeding token
|
||
|
|
if the position is between tokens.
|
||
|
|
"""
|
||
|
|
# TODO: add test for multibyte unicode. We need to translate offsets from ast module (which
|
||
|
|
# are in utf8) to offsets into the unicode text. tokenize module seems to use unicode offsets
|
||
|
|
# but isn't explicit.
|
||
|
|
return self.get_token_from_offset(self._line_numbers.line_to_offset(lineno, col_offset))
|
||
|
|
|
||
|
|
def get_token_from_utf8(self, lineno, col_offset):
|
||
|
|
# type: (int, int) -> Token
|
||
|
|
"""
|
||
|
|
Same as get_token(), but interprets col_offset as a UTF8 offset, which is what `ast` uses.
|
||
|
|
"""
|
||
|
|
return self.get_token(lineno, self._line_numbers.from_utf8_col(lineno, col_offset))
|
||
|
|
|
||
|
|
def next_token(self, tok, include_extra=False):
|
||
|
|
# type: (Token, bool) -> Token
|
||
|
|
"""
|
||
|
|
Returns the next token after the given one. If include_extra is True, includes non-coding
|
||
|
|
tokens from the tokenize module, such as NL and COMMENT.
|
||
|
|
"""
|
||
|
|
i = tok.index + 1
|
||
|
|
if not include_extra:
|
||
|
|
while is_non_coding_token(self._tokens[i].type):
|
||
|
|
i += 1
|
||
|
|
return self._tokens[i]
|
||
|
|
|
||
|
|
def prev_token(self, tok, include_extra=False):
|
||
|
|
# type: (Token, bool) -> Token
|
||
|
|
"""
|
||
|
|
Returns the previous token before the given one. If include_extra is True, includes non-coding
|
||
|
|
tokens from the tokenize module, such as NL and COMMENT.
|
||
|
|
"""
|
||
|
|
i = tok.index - 1
|
||
|
|
if not include_extra:
|
||
|
|
while is_non_coding_token(self._tokens[i].type):
|
||
|
|
i -= 1
|
||
|
|
return self._tokens[i]
|
||
|
|
|
||
|
|
def find_token(self, start_token, tok_type, tok_str=None, reverse=False):
|
||
|
|
# type: (Token, int, Optional[str], bool) -> Token
|
||
|
|
"""
|
||
|
|
Looks for the first token, starting at start_token, that matches tok_type and, if given, the
|
||
|
|
token string. Searches backwards if reverse is True. Returns ENDMARKER token if not found (you
|
||
|
|
can check it with `token.ISEOF(t.type)`).
|
||
|
|
"""
|
||
|
|
t = start_token
|
||
|
|
advance = self.prev_token if reverse else self.next_token
|
||
|
|
while not match_token(t, tok_type, tok_str) and not token.ISEOF(t.type):
|
||
|
|
t = advance(t, include_extra=True)
|
||
|
|
return t
|
||
|
|
|
||
|
|
def token_range(self,
|
||
|
|
first_token, # type: Token
|
||
|
|
last_token, # type: Token
|
||
|
|
include_extra=False, # type: bool
|
||
|
|
):
|
||
|
|
# type: (...) -> Iterator[Token]
|
||
|
|
"""
|
||
|
|
Yields all tokens in order from first_token through and including last_token. If
|
||
|
|
include_extra is True, includes non-coding tokens such as tokenize.NL and .COMMENT.
|
||
|
|
"""
|
||
|
|
for i in xrange(first_token.index, last_token.index + 1):
|
||
|
|
if include_extra or not is_non_coding_token(self._tokens[i].type):
|
||
|
|
yield self._tokens[i]
|
||
|
|
|
||
|
|
def get_tokens(self, node, include_extra=False):
|
||
|
|
# type: (AstNode, bool) -> Iterator[Token]
|
||
|
|
"""
|
||
|
|
Yields all tokens making up the given node. If include_extra is True, includes non-coding
|
||
|
|
tokens such as tokenize.NL and .COMMENT.
|
||
|
|
"""
|
||
|
|
return self.token_range(node.first_token, node.last_token, include_extra=include_extra)
|
||
|
|
|
||
|
|
def get_text_positions(self, node, padded):
|
||
|
|
# type: (AstNode, bool) -> Tuple[Tuple[int, int], Tuple[int, int]]
|
||
|
|
"""
|
||
|
|
Returns two ``(lineno, col_offset)`` tuples for the start and end of the given node.
|
||
|
|
If the positions can't be determined, or the nodes don't correspond to any particular text,
|
||
|
|
returns ``(1, 0)`` for both.
|
||
|
|
|
||
|
|
``padded`` corresponds to the ``padded`` argument to ``ast.get_source_segment()``.
|
||
|
|
This means that if ``padded`` is True, the start position will be adjusted to include
|
||
|
|
leading whitespace if ``node`` is a multiline statement.
|
||
|
|
"""
|
||
|
|
if not hasattr(node, 'first_token'):
|
||
|
|
return (1, 0), (1, 0)
|
||
|
|
|
||
|
|
start = node.first_token.start
|
||
|
|
end = node.last_token.end
|
||
|
|
if padded and any(match_token(t, token.NEWLINE) for t in self.get_tokens(node)):
|
||
|
|
# Set col_offset to 0 to include leading indentation for multiline statements.
|
||
|
|
start = (start[0], 0)
|
||
|
|
|
||
|
|
return start, end
|
||
|
|
|
||
|
|
|
||
|
|
class ASTText(ASTTextBase, object):
|
||
|
|
"""
|
||
|
|
Supports the same ``get_text*`` methods as ``ASTTokens``,
|
||
|
|
but uses the AST to determine the text positions instead of tokens.
|
||
|
|
This is faster than ``ASTTokens`` as it requires less setup work.
|
||
|
|
|
||
|
|
It also (sometimes) supports nodes inside f-strings, which ``ASTTokens`` doesn't.
|
||
|
|
|
||
|
|
Some node types and/or Python versions are not supported.
|
||
|
|
In these cases the ``get_text*`` methods will fall back to using ``ASTTokens``
|
||
|
|
which incurs the usual setup cost the first time.
|
||
|
|
If you want to avoid this, check ``supports_tokenless(node)`` before calling ``get_text*`` methods.
|
||
|
|
"""
|
||
|
|
def __init__(self, source_text, tree=None, filename='<unknown>'):
|
||
|
|
# type: (Any, Optional[Module], str) -> None
|
||
|
|
# FIXME: Strictly, the type of source_text is one of the six string types, but hard to specify with mypy given
|
||
|
|
# https://mypy.readthedocs.io/en/stable/common_issues.html#variables-vs-type-aliases
|
||
|
|
|
||
|
|
super(ASTText, self).__init__(source_text, filename)
|
||
|
|
|
||
|
|
self._tree = tree
|
||
|
|
if self._tree is not None:
|
||
|
|
annotate_fstring_nodes(self._tree)
|
||
|
|
|
||
|
|
self._asttokens = None # type: Optional[ASTTokens]
|
||
|
|
|
||
|
|
@property
|
||
|
|
def tree(self):
|
||
|
|
# type: () -> Module
|
||
|
|
if self._tree is None:
|
||
|
|
self._tree = ast.parse(self._text, self._filename)
|
||
|
|
annotate_fstring_nodes(self._tree)
|
||
|
|
return self._tree
|
||
|
|
|
||
|
|
@property
|
||
|
|
def asttokens(self):
|
||
|
|
# type: () -> ASTTokens
|
||
|
|
if self._asttokens is None:
|
||
|
|
self._asttokens = ASTTokens(
|
||
|
|
self._text,
|
||
|
|
tree=self.tree,
|
||
|
|
filename=self._filename,
|
||
|
|
)
|
||
|
|
return self._asttokens
|
||
|
|
|
||
|
|
def _get_text_positions_tokenless(self, node, padded):
|
||
|
|
# type: (AstNode, bool) -> Tuple[Tuple[int, int], Tuple[int, int]]
|
||
|
|
"""
|
||
|
|
Version of ``get_text_positions()`` that doesn't use tokens.
|
||
|
|
"""
|
||
|
|
if sys.version_info[:2] < (3, 8): # pragma: no cover
|
||
|
|
# This is just for mpypy
|
||
|
|
raise AssertionError("This method should only be called internally after checking supports_tokenless()")
|
||
|
|
|
||
|
|
if is_module(node):
|
||
|
|
# Modules don't have position info, so just return the range of the whole text.
|
||
|
|
# The token-using method does something different, but its behavior seems weird and inconsistent.
|
||
|
|
# For example, in a file with only comments, it only returns the first line.
|
||
|
|
# It's hard to imagine a case when this matters.
|
||
|
|
return (1, 0), self._line_numbers.offset_to_line(len(self._text))
|
||
|
|
|
||
|
|
if getattr(node, 'lineno', None) is None:
|
||
|
|
return (1, 0), (1, 0)
|
||
|
|
|
||
|
|
assert node # tell mypy that node is not None, which we allowed up to here for compatibility
|
||
|
|
|
||
|
|
decorators = getattr(node, 'decorator_list', [])
|
||
|
|
if not decorators:
|
||
|
|
# Astroid uses node.decorators.nodes instead of node.decorator_list.
|
||
|
|
decorators_node = getattr(node, 'decorators', None)
|
||
|
|
decorators = getattr(decorators_node, 'nodes', [])
|
||
|
|
if decorators:
|
||
|
|
# Function/Class definition nodes are marked by AST as starting at def/class,
|
||
|
|
# not the first decorator. This doesn't match the token-using behavior,
|
||
|
|
# or inspect.getsource(), and just seems weird.
|
||
|
|
start_node = decorators[0]
|
||
|
|
else:
|
||
|
|
start_node = node
|
||
|
|
|
||
|
|
start_lineno = start_node.lineno
|
||
|
|
end_node = last_stmt(node)
|
||
|
|
|
||
|
|
# Include leading indentation for multiline statements.
|
||
|
|
# This doesn't mean simple statements that happen to be on multiple lines,
|
||
|
|
# but compound statements where inner indentation matters.
|
||
|
|
# So we don't just compare node.lineno and node.end_lineno,
|
||
|
|
# we check for a contained statement starting on a different line.
|
||
|
|
if padded and (
|
||
|
|
start_lineno != end_node.lineno
|
||
|
|
or (
|
||
|
|
# Astroid docstrings aren't treated as separate statements.
|
||
|
|
# So to handle function/class definitions with a docstring but no other body,
|
||
|
|
# we just check that the node is a statement with a docstring
|
||
|
|
# and spanning multiple lines in the simple, literal sense.
|
||
|
|
start_lineno != node.end_lineno
|
||
|
|
and getattr(node, "doc_node", None)
|
||
|
|
and is_stmt(node)
|
||
|
|
)
|
||
|
|
):
|
||
|
|
start_col_offset = 0
|
||
|
|
else:
|
||
|
|
start_col_offset = self._line_numbers.from_utf8_col(start_lineno, start_node.col_offset)
|
||
|
|
|
||
|
|
start = (start_lineno, start_col_offset)
|
||
|
|
|
||
|
|
# To match the token-using behaviour, we exclude trailing semicolons and comments.
|
||
|
|
# This means that for blocks containing multiple statements, we have to use the last one
|
||
|
|
# instead of the actual node for end_lineno and end_col_offset.
|
||
|
|
end_lineno = cast(int, end_node.end_lineno)
|
||
|
|
end_col_offset = cast(int, end_node.end_col_offset)
|
||
|
|
end_col_offset = self._line_numbers.from_utf8_col(end_lineno, end_col_offset)
|
||
|
|
end = (end_lineno, end_col_offset)
|
||
|
|
|
||
|
|
return start, end
|
||
|
|
|
||
|
|
def get_text_positions(self, node, padded):
|
||
|
|
# type: (AstNode, bool) -> Tuple[Tuple[int, int], Tuple[int, int]]
|
||
|
|
"""
|
||
|
|
Returns two ``(lineno, col_offset)`` tuples for the start and end of the given node.
|
||
|
|
If the positions can't be determined, or the nodes don't correspond to any particular text,
|
||
|
|
returns ``(1, 0)`` for both.
|
||
|
|
|
||
|
|
``padded`` corresponds to the ``padded`` argument to ``ast.get_source_segment()``.
|
||
|
|
This means that if ``padded`` is True, the start position will be adjusted to include
|
||
|
|
leading whitespace if ``node`` is a multiline statement.
|
||
|
|
"""
|
||
|
|
if getattr(node, "_broken_positions", None):
|
||
|
|
# This node was marked in util.annotate_fstring_nodes as having untrustworthy lineno/col_offset.
|
||
|
|
return (1, 0), (1, 0)
|
||
|
|
|
||
|
|
if supports_tokenless(node):
|
||
|
|
return self._get_text_positions_tokenless(node, padded)
|
||
|
|
|
||
|
|
return self.asttokens.get_text_positions(node, padded)
|
||
|
|
|
||
|
|
|
||
|
|
# Node types that _get_text_positions_tokenless doesn't support. Only relevant for Python 3.8+.
|
||
|
|
_unsupported_tokenless_types = () # type: Tuple[str, ...]
|
||
|
|
if sys.version_info[:2] >= (3, 8):
|
||
|
|
# no lineno
|
||
|
|
_unsupported_tokenless_types += ("arguments", "Arguments", "withitem")
|
||
|
|
if sys.version_info[:2] == (3, 8):
|
||
|
|
# _get_text_positions_tokenless works incorrectly for these types due to bugs in Python 3.8.
|
||
|
|
_unsupported_tokenless_types += ("arg", "Starred")
|
||
|
|
# no lineno in 3.8
|
||
|
|
_unsupported_tokenless_types += ("Slice", "ExtSlice", "Index", "keyword")
|
||
|
|
|
||
|
|
|
||
|
|
def supports_tokenless(node=None):
|
||
|
|
# type: (Any) -> bool
|
||
|
|
"""
|
||
|
|
Returns True if the Python version and the node (if given) are supported by
|
||
|
|
the ``get_text*`` methods of ``ASTText`` without falling back to ``ASTTokens``.
|
||
|
|
See ``ASTText`` for why this matters.
|
||
|
|
|
||
|
|
The following cases are not supported:
|
||
|
|
|
||
|
|
- Python 3.7 and earlier
|
||
|
|
- PyPy
|
||
|
|
- ``ast.arguments`` / ``astroid.Arguments``
|
||
|
|
- ``ast.withitem``
|
||
|
|
- ``astroid.Comprehension``
|
||
|
|
- ``astroid.AssignName`` inside ``astroid.Arguments`` or ``astroid.ExceptHandler``
|
||
|
|
- The following nodes in Python 3.8 only:
|
||
|
|
- ``ast.arg``
|
||
|
|
- ``ast.Starred``
|
||
|
|
- ``ast.Slice``
|
||
|
|
- ``ast.ExtSlice``
|
||
|
|
- ``ast.Index``
|
||
|
|
- ``ast.keyword``
|
||
|
|
"""
|
||
|
|
return (
|
||
|
|
type(node).__name__ not in _unsupported_tokenless_types
|
||
|
|
and not (
|
||
|
|
# astroid nodes
|
||
|
|
not isinstance(node, ast.AST) and node is not None and (
|
||
|
|
(
|
||
|
|
type(node).__name__ == "AssignName"
|
||
|
|
and type(node.parent).__name__ in ("Arguments", "ExceptHandler")
|
||
|
|
)
|
||
|
|
)
|
||
|
|
)
|
||
|
|
and sys.version_info[:2] >= (3, 8)
|
||
|
|
and 'pypy' not in sys.version.lower()
|
||
|
|
)
|