X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/5316bbff0e9db989db98b14761ce2c299a05895b..1fe2efd8573a63ffc76c69320720d349b21897da:/src/black/__init__.py

diff --git a/src/black/__init__.py b/src/black/__init__.py
index 5c9ab75..e47aa21 100644
--- a/src/black/__init__.py
+++ b/src/black/__init__.py
@@ -273,9 +273,9 @@ class Mode:
     target_versions: Set[TargetVersion] = field(default_factory=set)
     line_length: int = DEFAULT_LINE_LENGTH
     string_normalization: bool = True
+    is_pyi: bool = False
     magic_trailing_comma: bool = True
     experimental_string_processing: bool = False
-    is_pyi: bool = False
 
     def get_cache_key(self) -> str:
         if self.target_versions:
@@ -290,6 +290,8 @@ class Mode:
             str(self.line_length),
             str(int(self.string_normalization)),
             str(int(self.is_pyi)),
+            str(int(self.magic_trailing_comma)),
+            str(int(self.experimental_string_processing)),
         ]
         return ".".join(parts)
 
@@ -309,8 +311,17 @@ def find_pyproject_toml(path_search_start: Tuple[str, ...]) -> Optional[str]:
     if path_pyproject_toml.is_file():
         return str(path_pyproject_toml)
 
-    path_user_pyproject_toml = find_user_pyproject_toml()
-    return str(path_user_pyproject_toml) if path_user_pyproject_toml.is_file() else None
+    try:
+        path_user_pyproject_toml = find_user_pyproject_toml()
+        return (
+            str(path_user_pyproject_toml)
+            if path_user_pyproject_toml.is_file()
+            else None
+        )
+    except PermissionError as e:
+        # We do not have access to the user-level config directory, so ignore it.
+        err(f"Ignoring user configuration directory due to {e!r}")
+        return None
 
 
 def parse_pyproject_toml(path_config: str) -> Dict[str, Any]:
@@ -481,15 +492,15 @@ def validate_regex(
 @click.option(
     "--exclude",
     type=str,
-    default=DEFAULT_EXCLUDES,
     callback=validate_regex,
     help=(
         "A regular expression that matches files and directories that should be"
         " excluded on recursive searches. An empty value means no paths are excluded."
         " Use forward slashes for directories on all platforms (Windows, too)."
-        " Exclusions are calculated first, inclusions later."
+        " Exclusions are calculated first, inclusions later. [default:"
+        f" {DEFAULT_EXCLUDES}]"
     ),
-    show_default=True,
+    show_default=False,
 )
 @click.option(
     "--extend-exclude",
@@ -576,7 +587,7 @@ def main(
     quiet: bool,
     verbose: bool,
     include: Pattern,
-    exclude: Pattern,
+    exclude: Optional[Pattern],
     extend_exclude: Optional[Pattern],
     force_exclude: Optional[Pattern],
     stdin_filename: Optional[str],
@@ -651,7 +662,7 @@ def get_sources(
     quiet: bool,
     verbose: bool,
     include: Pattern[str],
-    exclude: Pattern[str],
+    exclude: Optional[Pattern[str]],
     extend_exclude: Optional[Pattern[str]],
     force_exclude: Optional[Pattern[str]],
     report: "Report",
@@ -662,7 +673,12 @@ def get_sources(
     root = find_project_root(src)
     sources: Set[Path] = set()
     path_empty(src, "No Path provided. Nothing to do 😴", quiet, verbose, ctx)
-    gitignore = get_gitignore(root)
+
+    if exclude is None:
+        exclude = re_compile_maybe_verbose(DEFAULT_EXCLUDES)
+        gitignore = get_gitignore(root)
+    else:
+        gitignore = None
 
     for s in src:
         if s == "-" and stdin_filename:
@@ -744,6 +760,8 @@ def reformat_one(
             is_stdin = False
 
         if is_stdin:
+            if src.suffix == ".pyi":
+                mode = replace(mode, is_pyi=True)
             if format_stdin_to_stdout(fast=fast, write_back=write_back, mode=mode):
                 changed = Changed.YES
         else:
@@ -1016,7 +1034,17 @@ def format_file_contents(src_contents: str, *, fast: bool, mode: Mode) -> FileCo
 
     if not fast:
         assert_equivalent(src_contents, dst_contents)
-        assert_stable(src_contents, dst_contents, mode=mode)
+
+        # Forced second pass to work around optional trailing commas (becoming
+        # forced trailing commas on pass 2) interacting differently with optional
+        # parentheses.  Admittedly ugly.
+        dst_contents_pass2 = format_str(dst_contents, mode=mode)
+        if dst_contents != dst_contents_pass2:
+            dst_contents = dst_contents_pass2
+            assert_equivalent(src_contents, dst_contents, pass_num=2)
+            assert_stable(src_contents, dst_contents, mode=mode)
+        # Note: no need to explicitly call `assert_stable` if `dst_contents` was
+        # the same as `dst_contents_pass2`.
     return dst_contents
 
 
@@ -2174,7 +2202,13 @@ class LineGenerator(Visitor[Line]):
                 if docstring[0] == quote_char:
                     docstring = " " + docstring
                 if docstring[-1] == quote_char:
-                    docstring = docstring + " "
+                    docstring += " "
+                if docstring[-1] == "\\":
+                    backslash_count = len(docstring) - len(docstring.rstrip("\\"))
+                    if backslash_count % 2:
+                        # Odd number of tailing backslashes, add some padding to
+                        # avoid escaping the closing string quote.
+                        docstring += " "
             else:
                 # Add some padding if the docstring is empty.
                 docstring = " "
@@ -5351,15 +5385,10 @@ def normalize_numeric_literal(leaf: Leaf) -> None:
 
 def format_hex(text: str) -> str:
     """
-    Formats a hexadecimal string like "0x12b3"
-
-    Uses lowercase because of similarity between "B" and "8", which
-    can cause security issues.
-    see: https://github.com/psf/black/issues/1692
+    Formats a hexadecimal string like "0x12B3"
     """
-
     before, after = text[:2], text[2:]
-    return f"{before}{after.lower()}"
+    return f"{before}{after.upper()}"
 
 
 def format_scientific_notation(text: str) -> str:
@@ -5606,7 +5635,15 @@ def maybe_make_parens_invisible_in_atom(node: LN, parent: LN) -> bool:
         return False
 
     if is_walrus_assignment(node):
-        if parent.type in [syms.annassign, syms.expr_stmt]:
+        if parent.type in [
+            syms.annassign,
+            syms.expr_stmt,
+            syms.assert_stmt,
+            syms.return_stmt,
+            # these ones aren't useful to end users, but they do please fuzzers
+            syms.for_stmt,
+            syms.del_stmt,
+        ]:
             return False
 
     first = node.children[0]
@@ -5729,6 +5766,13 @@ def is_simple_decorator_trailer(node: LN, last: bool = False) -> bool:
             and node.children[0].type == token.DOT
             and node.children[1].type == token.NAME
         )
+        # last trailer can be an argument-less parentheses pair
+        or (
+            last
+            and len(node.children) == 2
+            and node.children[0].type == token.LPAR
+            and node.children[1].type == token.RPAR
+        )
         # last trailer can be arguments
         or (
             last
@@ -6176,12 +6220,12 @@ def path_is_excluded(
 def gen_python_files(
     paths: Iterable[Path],
     root: Path,
-    include: Optional[Pattern[str]],
+    include: Pattern[str],
     exclude: Pattern[str],
     extend_exclude: Optional[Pattern[str]],
     force_exclude: Optional[Pattern[str]],
     report: "Report",
-    gitignore: PathSpec,
+    gitignore: Optional[PathSpec],
 ) -> Iterator[Path]:
     """Generate all files under `path` whose paths are not excluded by the
     `exclude_regex`, `extend_exclude`, or `force_exclude` regexes,
@@ -6197,8 +6241,8 @@ def gen_python_files(
         if normalized_path is None:
             continue
 
-        # First ignore files matching .gitignore
-        if gitignore.match_file(normalized_path):
+        # First ignore files matching .gitignore, if passed
+        if gitignore is not None and gitignore.match_file(normalized_path):
             report.path_ignored(child, "matches the .gitignore file content")
             continue
 
@@ -6489,7 +6533,7 @@ def _stringify_ast(
     yield f"{'  ' * depth})  # /{node.__class__.__name__}"
 
 
-def assert_equivalent(src: str, dst: str) -> None:
+def assert_equivalent(src: str, dst: str, *, pass_num: int = 1) -> None:
     """Raise AssertionError if `src` and `dst` aren't equivalent."""
     try:
         src_ast = parse_ast(src)
@@ -6504,9 +6548,9 @@ def assert_equivalent(src: str, dst: str) -> None:
     except Exception as exc:
         log = dump_to_file("".join(traceback.format_tb(exc.__traceback__)), dst)
         raise AssertionError(
-            f"INTERNAL ERROR: Black produced invalid code: {exc}. Please report a bug"
-            " on https://github.com/psf/black/issues.  This invalid output might be"
-            f" helpful: {log}"
+            f"INTERNAL ERROR: Black produced invalid code on pass {pass_num}: {exc}. "
+            "Please report a bug on https://github.com/psf/black/issues.  "
+            f"This invalid output might be helpful: {log}"
         ) from None
 
     src_ast_str = "\n".join(_stringify_ast(src_ast))
@@ -6515,8 +6559,8 @@ def assert_equivalent(src: str, dst: str) -> 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"
-            " source.  Please report a bug on https://github.com/psf/black/issues. "
-            f" This diff might be helpful: {log}"
+            f" source on pass {pass_num}.  Please report a bug on "
+            f"https://github.com/psf/black/issues.  This diff might be helpful: {log}"
         ) from None