Remove blib2to3 grammar cache logging (#3193)

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

diff --git a/src/black/__init__.py b/src/black/__init__.py
index 769e693ed2386659522f2f2fdda6e5516f8883fb..2a5c750a5835562ddf5c743b01ab0cc58b4cb75c 100644 (file)
--- a/src/black/__init__.py
+++ b/src/black/__init__.py
@@ -1,21 +1,22 @@
 import asyncio
 import asyncio

-from json.decoder import JSONDecodeError
-import json
-from concurrent.futures import Executor, ThreadPoolExecutor, ProcessPoolExecutor
-from contextlib import contextmanager
-from datetime import datetime
-from enum import Enum

 import io
 import io

-from multiprocessing import Manager, freeze_support
+import json

 import os
 import os

-from pathlib import Path
-from pathspec.patterns.gitwildmatch import GitWildMatchPatternError
+import platform

 import re
 import signal
 import sys
 import tokenize
 import traceback
 import re
 import signal
 import sys
 import tokenize
 import traceback

+from contextlib import contextmanager
+from dataclasses import replace
+from datetime import datetime
+from enum import Enum
+from json.decoder import JSONDecodeError
+from multiprocessing import Manager, freeze_support
+from pathlib import Path

 from typing import (
 from typing import (

+    TYPE_CHECKING,

     Any,
     Dict,
     Generator,
     Any,
     Dict,
     Generator,


@@ -33,43 +34,64 @@ from typing import (
 
 import click
 from click.core import ParameterSource
 
 import click
 from click.core import ParameterSource

-from dataclasses import replace

 from mypy_extensions import mypyc_attr
 from mypy_extensions import mypyc_attr

+from pathspec.patterns.gitwildmatch import GitWildMatchPatternError

 
 

-from black.const import DEFAULT_LINE_LENGTH, DEFAULT_INCLUDES, DEFAULT_EXCLUDES
-from black.const import STDIN_PLACEHOLDER
-from black.nodes import STARS, syms, is_simple_decorator_expression
-from black.nodes import is_string_token
-from black.lines import Line, EmptyLineTracker
-from black.linegen import transform_line, LineGenerator, LN
+from _black_version import version as __version__
+from black.cache import Cache, filter_cached, get_cache_info, read_cache, write_cache

 from black.comments import normalize_fmt_off
 from black.comments import normalize_fmt_off

-from black.mode import FUTURE_FLAG_TO_FEATURE, Mode, TargetVersion
-from black.mode import Feature, supports_feature, VERSION_TO_FEATURES
-from black.cache import read_cache, write_cache, get_cache_info, filter_cached, Cache
-from black.concurrency import cancel, shutdown, maybe_install_uvloop
-from black.output import dump_to_file, ipynb_diff, diff, color_diff, out, err
-from black.report import Report, Changed, NothingChanged
-from black.files import find_project_root, find_pyproject_toml, parse_pyproject_toml
-from black.files import gen_python_files, get_gitignore, normalize_path_maybe_ignore
-from black.files import wrap_stream_for_windows
-from black.parsing import InvalidInput  # noqa F401
-from black.parsing import lib2to3_parse, parse_ast, stringify_ast
+from black.concurrency import cancel, maybe_install_uvloop, shutdown
+from black.const import (
+    DEFAULT_EXCLUDES,
+    DEFAULT_INCLUDES,
+    DEFAULT_LINE_LENGTH,
+    STDIN_PLACEHOLDER,
+)
+from black.files import (
+    find_project_root,
+    find_pyproject_toml,
+    find_user_pyproject_toml,
+    gen_python_files,
+    get_gitignore,
+    normalize_path_maybe_ignore,
+    parse_pyproject_toml,
+    wrap_stream_for_windows,
+)

 from black.handle_ipynb_magics import (
 from black.handle_ipynb_magics import (

-    mask_cell,
-    unmask_cell,
-    remove_trailing_semicolon,
-    put_trailing_semicolon_back,
-    TRANSFORMED_MAGICS,

     PYTHON_CELL_MAGICS,
     PYTHON_CELL_MAGICS,

+    TRANSFORMED_MAGICS,

     jupyter_dependencies_are_installed,
     jupyter_dependencies_are_installed,

+    mask_cell,
+    put_trailing_semicolon_back,
+    remove_trailing_semicolon,
+    unmask_cell,

 )
 )

-
-
-# lib2to3 fork
-from blib2to3.pytree import Node, Leaf
+from black.linegen import LN, LineGenerator, transform_line
+from black.lines import EmptyLineTracker, Line
+from black.mode import (
+    FUTURE_FLAG_TO_FEATURE,
+    VERSION_TO_FEATURES,
+    Feature,
+    Mode,
+    TargetVersion,
+    supports_feature,
+)
+from black.nodes import (
+    STARS,
+    is_number_token,
+    is_simple_decorator_expression,
+    is_string_token,
+    syms,
+)
+from black.output import color_diff, diff, dump_to_file, err, ipynb_diff, out
+from black.parsing import InvalidInput  # noqa F401
+from black.parsing import lib2to3_parse, parse_ast, stringify_ast
+from black.report import Changed, NothingChanged, Report

 from blib2to3.pgen2 import token
 from blib2to3.pgen2 import token

+from blib2to3.pytree import Leaf, Node

 
 

-from _black_version import version as __version__
+if TYPE_CHECKING:
+    from concurrent.futures import Executor

 
 COMPILED = Path(__file__).suffix in (".pyd", ".so")
 
 
 COMPILED = Path(__file__).suffix in (".pyd", ".so")
 


@@ -258,7 +280,7 @@ def validate_regex(
     "--preview",
     is_flag=True,
     help=(
     "--preview",
     is_flag=True,
     help=(

-        "Enable potentially disruptive style changes that will be added to Black's main"
+        "Enable potentially disruptive style changes that may be added to Black's main"

         " functionality in the next major release."
     ),
 )
         " functionality in the next major release."
     ),
 )


@@ -291,7 +313,8 @@ def validate_regex(
     type=str,
     help=(
         "Require a specific version of Black to be running (useful for unifying results"
     type=str,
     help=(
         "Require a specific version of Black to be running (useful for unifying results"

-        " across many environments e.g. with a pyproject.toml file)."
+        " across many environments e.g. with a pyproject.toml file). It can be"
+        " either a major version number or an exact version."

     ),
 )
 @click.option(
     ),
 )
 @click.option(


@@ -375,7 +398,10 @@ def validate_regex(
 )
 @click.version_option(
     version=__version__,
 )
 @click.version_option(
     version=__version__,

-    message=f"%(prog)s, %(version)s (compiled: {'yes' if COMPILED else 'no'})",
+    message=(
+        f"%(prog)s, %(version)s (compiled: {'yes' if COMPILED else 'no'})\n"
+        f"Python ({platform.python_implementation()}) {platform.python_version()}"
+    ),

 )
 @click.argument(
     "src",
 )
 @click.argument(
     "src",


@@ -401,7 +427,7 @@ def validate_regex(
     help="Read configuration from FILE path.",
 )
 @click.pass_context
     help="Read configuration from FILE path.",
 )
 @click.pass_context

-def main(
+def main(  # noqa: C901

     ctx: click.Context,
     code: Optional[str],
     line_length: int,
     ctx: click.Context,
     code: Optional[str],
     line_length: int,


@@ -468,13 +494,27 @@ def main(
 
         if config:
             config_source = ctx.get_parameter_source("config")
 
         if config:
             config_source = ctx.get_parameter_source("config")

-            if config_source in (ParameterSource.DEFAULT, ParameterSource.DEFAULT_MAP):
+            user_level_config = str(find_user_pyproject_toml())
+            if config == user_level_config:
+                out(
+                    "Using configuration from user-level config at "
+                    f"'{user_level_config}'.",
+                    fg="blue",
+                )
+            elif config_source in (
+                ParameterSource.DEFAULT,
+                ParameterSource.DEFAULT_MAP,
+            ):

                 out("Using configuration from project root.", fg="blue")
             else:
                 out(f"Using configuration in '{config}'.", fg="blue")
 
     error_msg = "Oh no! 💥 💔 💥"
                 out("Using configuration from project root.", fg="blue")
             else:
                 out(f"Using configuration in '{config}'.", fg="blue")
 
     error_msg = "Oh no! 💥 💔 💥"

-    if required_version and required_version != __version__:
+    if (
+        required_version
+        and required_version != __version__
+        and required_version != __version__.split(".")[0]
+    ):

         err(
             f"{error_msg} The required version `{required_version}` does not match"
             f" the running version `{__version__}`!"
         err(
             f"{error_msg} The required version `{required_version}` does not match"
             f" the running version `{__version__}`!"


@@ -677,6 +717,9 @@ def reformat_code(
         report.failed(path, str(exc))
 
 
         report.failed(path, str(exc))
 
 

+# diff-shades depends on being to monkeypatch this function to operate. I know it's
+# not ideal, but this shouldn't cause any issues ... hopefully. ~ichard26
+@mypyc_attr(patchable=True)

 def reformat_one(
     src: Path, fast: bool, write_back: WriteBack, mode: Mode, report: "Report"
 ) -> None:
 def reformat_one(
     src: Path, fast: bool, write_back: WriteBack, mode: Mode, report: "Report"
 ) -> None:


@@ -740,8 +783,9 @@ def reformat_many(
     workers: Optional[int],
 ) -> None:
     """Reformat multiple files using a ProcessPoolExecutor."""
     workers: Optional[int],
 ) -> None:
     """Reformat multiple files using a ProcessPoolExecutor."""

+    from concurrent.futures import Executor, ProcessPoolExecutor, ThreadPoolExecutor
+

     executor: Executor
     executor: Executor

-    loop = asyncio.get_event_loop()

     worker_count = workers if workers is not None else DEFAULT_WORKERS
     if sys.platform == "win32":
         # Work around https://bugs.python.org/issue26903
     worker_count = workers if workers is not None else DEFAULT_WORKERS
     if sys.platform == "win32":
         # Work around https://bugs.python.org/issue26903


@@ -756,6 +800,8 @@ def reformat_many(
         # any good due to the Global Interpreter Lock)
         executor = ThreadPoolExecutor(max_workers=1)
 
         # any good due to the Global Interpreter Lock)
         executor = ThreadPoolExecutor(max_workers=1)
 

+    loop = asyncio.new_event_loop()
+    asyncio.set_event_loop(loop)

     try:
         loop.run_until_complete(
             schedule_formatting(
     try:
         loop.run_until_complete(
             schedule_formatting(


@@ -769,7 +815,10 @@ def reformat_many(
             )
         )
     finally:
             )
         )
     finally:

-        shutdown(loop)
+        try:
+            shutdown(loop)
+        finally:
+            asyncio.set_event_loop(None)

         if executor is not None:
             executor.shutdown()
 
         if executor is not None:
             executor.shutdown()
 


@@ -781,7 +830,7 @@ async def schedule_formatting(
     mode: Mode,
     report: "Report",
     loop: asyncio.AbstractEventLoop,
     mode: Mode,
     report: "Report",
     loop: asyncio.AbstractEventLoop,

-    executor: Executor,
+    executor: "Executor",

 ) -> None:
     """Run formatting of `sources` in parallel using the provided `executor`.
 
 ) -> None:
     """Run formatting of `sources` in parallel using the provided `executor`.
 


@@ -1140,13 +1189,13 @@ def format_str(src_contents: str, *, mode: Mode) -> str:
 def _format_str_once(src_contents: str, *, mode: Mode) -> str:
     src_node = lib2to3_parse(src_contents.lstrip(), mode.target_versions)
     dst_contents = []
 def _format_str_once(src_contents: str, *, mode: Mode) -> str:
     src_node = lib2to3_parse(src_contents.lstrip(), mode.target_versions)
     dst_contents = []

-    future_imports = get_future_imports(src_node)

     if mode.target_versions:
         versions = mode.target_versions
     else:
     if mode.target_versions:
         versions = mode.target_versions
     else:

+        future_imports = get_future_imports(src_node)

         versions = detect_target_versions(src_node, future_imports=future_imports)
 
         versions = detect_target_versions(src_node, future_imports=future_imports)
 

-    normalize_fmt_off(src_node)
+    normalize_fmt_off(src_node, preview=mode.preview)

     lines = LineGenerator(mode=mode)
     elt = EmptyLineTracker(is_pyi=mode.is_pyi)
     empty_line = Line(mode=mode)
     lines = LineGenerator(mode=mode)
     elt = EmptyLineTracker(is_pyi=mode.is_pyi)
     empty_line = Line(mode=mode)


@@ -1213,8 +1262,7 @@ def get_features_used(  # noqa: C901
             if value_head in {'f"', 'F"', "f'", "F'", "rf", "fr", "RF", "FR"}:
                 features.add(Feature.F_STRINGS)
 
             if value_head in {'f"', 'F"', "f'", "F'", "rf", "fr", "RF", "FR"}:
                 features.add(Feature.F_STRINGS)
 

-        elif n.type == token.NUMBER:
-            assert isinstance(n, Leaf)
+        elif is_number_token(n):

             if "_" in n.value:
                 features.add(Feature.NUMERIC_UNDERSCORES)
 
             if "_" in n.value:
                 features.add(Feature.NUMERIC_UNDERSCORES)
 


@@ -1269,6 +1317,25 @@ def get_features_used(  # noqa: C901
         ):
             features.add(Feature.ANN_ASSIGN_EXTENDED_RHS)
 
         ):
             features.add(Feature.ANN_ASSIGN_EXTENDED_RHS)
 

+        elif (
+            n.type == syms.except_clause
+            and len(n.children) >= 2
+            and n.children[1].type == token.STAR
+        ):
+            features.add(Feature.EXCEPT_STAR)
+
+        elif n.type in {syms.subscriptlist, syms.trailer} and any(
+            child.type == syms.star_expr for child in n.children
+        ):
+            features.add(Feature.VARIADIC_GENERICS)
+
+        elif (
+            n.type == syms.tname_star
+            and len(n.children) == 3
+            and n.children[2].type == syms.star_expr
+        ):
+            features.add(Feature.VARIADIC_GENERICS)
+

     return features
 
 
     return features
 
 


@@ -1332,16 +1399,16 @@ def get_future_imports(node: Node) -> Set[str]:
     return imports
 
 
     return imports
 
 

-def assert_equivalent(src: str, dst: str, *, pass_num: int = 1) -> None:
+def assert_equivalent(src: str, dst: str) -> None:

     """Raise AssertionError if `src` and `dst` aren't equivalent."""
     try:
         src_ast = parse_ast(src)
     except Exception as exc:
         raise AssertionError(
     """Raise AssertionError if `src` and `dst` aren't equivalent."""
     try:
         src_ast = parse_ast(src)
     except Exception as exc:
         raise AssertionError(

-            f"cannot use --safe with this file; failed to parse source file AST: "
+            "cannot use --safe with this file; failed to parse source file AST: "

             f"{exc}\n"
             f"{exc}\n"

-            f"This could be caused by running Black with an older Python version "
-            f"that does not support new syntax used in your source file."
+            "This could be caused by running Black with an older Python version "
+            "that does not support new syntax used in your source file."

         ) from exc
 
     try:
         ) from exc
 
     try:


@@ -1349,7 +1416,7 @@ def assert_equivalent(src: str, dst: str, *, pass_num: int = 1) -> None:
     except Exception as exc:
         log = dump_to_file("".join(traceback.format_tb(exc.__traceback__)), dst)
         raise AssertionError(
     except Exception as exc:
         log = dump_to_file("".join(traceback.format_tb(exc.__traceback__)), dst)
         raise AssertionError(

-            f"INTERNAL ERROR: Black produced invalid code on pass {pass_num}: {exc}. "
+            f"INTERNAL ERROR: Black produced invalid code: {exc}. "

             "Please report a bug on https://github.com/psf/black/issues.  "
             f"This invalid output might be helpful: {log}"
         ) from None
             "Please report a bug on https://github.com/psf/black/issues.  "
             f"This invalid output might be helpful: {log}"
         ) from None


@@ -1360,7 +1427,7 @@ def assert_equivalent(src: str, dst: str, *, pass_num: int = 1) -> None:
         log = dump_to_file(diff(src_ast_str, dst_ast_str, "src", "dst"))
         raise AssertionError(
             "INTERNAL ERROR: Black produced code that is not equivalent to the"
         log = dump_to_file(diff(src_ast_str, dst_ast_str, "src", "dst"))
         raise AssertionError(
             "INTERNAL ERROR: Black produced code that is not equivalent to the"

-            f" source on pass {pass_num}.  Please report a bug on "
+            " source.  Please report a bug on "

             f"https://github.com/psf/black/issues.  This diff might be helpful: {log}"
         ) from None
 
             f"https://github.com/psf/black/issues.  This diff might be helpful: {log}"
         ) from None
 


@@ -1404,13 +1471,23 @@ def patch_click() -> None:
     file paths is minimal since it's Python source code.  Moreover, this crash was
     spurious on Python 3.7 thanks to PEP 538 and PEP 540.
     """
     file paths is minimal since it's Python source code.  Moreover, this crash was
     spurious on Python 3.7 thanks to PEP 538 and PEP 540.
     """

+    modules: List[Any] = []

     try:
         from click import core
     try:
         from click import core

-        from click import _unicodefun
-    except ModuleNotFoundError:
-        return
+    except ImportError:
+        pass
+    else:
+        modules.append(core)
+    try:
+        # Removed in Click 8.1.0 and newer; we keep this around for users who have
+        # older versions installed.
+        from click import _unicodefun  # type: ignore
+    except ImportError:
+        pass
+    else:
+        modules.append(_unicodefun)

 
 

-    for module in (core, _unicodefun):
+    for module in modules:

         if hasattr(module, "_verify_python3_env"):
             module._verify_python3_env = lambda: None  # type: ignore
         if hasattr(module, "_verify_python_env"):
         if hasattr(module, "_verify_python3_env"):
             module._verify_python3_env = lambda: None  # type: ignore
         if hasattr(module, "_verify_python_env"):