.ruff.toml

target-version = "py311"  # Pin Ruff to Python 3.11
line-length = 88
output-format = "full"

extend-exclude = [
    "tests/roots/*",
    "tests/js/roots/*",
    "build/*",
    "doc/_build/*",
    "doc/usage/extensions/example*.py",
]

[lint]
preview = true
ignore = [
    # flake8-annotations
    "ANN401",  # Dynamically typed expressions (typing.Any) are disallowed in `{name}`
    # flake8-unused-arguments ('ARG')
    "ARG001",  # Unused function argument: `{name}`
    "ARG002",  # Unused method argument: `{name}`
    "ARG003",  # Unused class method argument: `{name}`
    "ARG005",  # Unused lambda argument: `{name}`
    # flake8-commas ('COM')
    "COM812",  # Trailing comma missing
    # pycodestyle
    "E741",  # Ambiguous variable name: `{name}`
    # pyflakes
    "F841",  # Local variable `{name}` is assigned to but never used
    # flake8-logging-format
    "G003",  # Logging statement uses `+`
    # refurb
    "FURB101",  # `open` and `read` should be replaced by `Path(...).read_text(...)`
    "FURB103",  # `open` and `write` should be replaced by `Path(...).write_text(...)`
    # perflint
    "PERF203",  # `try`-`except` within a loop incurs performance overhead
    # flake8-pie ('PIE')
    "PIE790",  # Unnecessary `pass` statement
    # pylint ('PLC')
    "PLC0415",  # `import` should be at the top-level of a file
    "PLC2701",  # Private name import `{name}` from external module `{module}`
    # pylint ('PLR')
    "PLR0904",  # Too many public methods ({methods} > {max_methods})
    "PLR0911",  # Too many return statements ({returns} > {max_returns})
    "PLR0912",  # Too many branches ({branches} > {max_branches})
    "PLR0913",  # Too many arguments in function definition ({c_args} > {max_args})
    "PLR0914",  # Too many local variables ({current_amount}/{max_amount})
    "PLR0915",  # Too many statements ({statements} > {max_statements})
    "PLR0916",  # Too many Boolean expressions ({expressions} > {max_expressions})
    "PLR0917",  # Too many positional arguments ({c_pos}/{max_pos})
    "PLR1702",  # Too many nested blocks ({nested_blocks} > {max_nested_blocks})
    "PLR2004",  # Magic value used in comparison, consider replacing `{value}` with a constant variable
    "PLR5501",  # Use `elif` instead of `else` then `if`, to reduce indentation
    "PLR6104",  # Use `{operator}` to perform an augmented assignment directly
    "PLR6301",  # Method `{method_name}` could be a function, class method, or static method
    # pylint ('PLW')
    "PLW2901",  # Outer {outer_kind} variable `{name}` overwritten by inner {inner_kind} target
    # flake8-pyi ('PYI')
    "PYI025",  # Use `from collections.abc import Set as AbstractSet` to avoid confusion with the `set` builtin
    # flake8-bandit ('S')
    "S101",  # Use of `assert` detected
    "S110",  # `try`-`except`-`pass` detected, consider logging the exception
    "S404",  # `subprocess` module is possibly insecure
    "S405",  # `xml.etree` methods are vulnerable to XML attacks
    "S603",  # `subprocess` call: check for execution of untrusted input
    # flake8-simplify
    "SIM102",  # Use a single `if` statement instead of nested `if` statements
    "SIM108",  # Use ternary operator `{contents}` instead of `if`-`else`-block
    # pyupgrade
    "UP031",   # Use format specifiers instead of percent format
    "UP032",   # Use f-string instead of `format` call
]
external = [  # Whitelist for RUF100 unknown code warnings
    "E704",
    "SIM113",
]
select = [
    # flake8-builtins ('A')
      # NOT YET USED
    # airflow ('AIR')
      # Airflow is not used in Sphinx
    # flake8-annotations ('ANN')
    "ANN",
    # flake8-unused-arguments ('ARG')
    "ARG",
    # flake8-async ('ASYNC')
    "ASYNC",
    # flake8-bugbear ('B')
    "B",
    # flake8-blind-except ('BLE')
      # NOT YET USED
    # flake8-comprehensions ('C4')
    "C4",
    # mccabe ('C90')
#    "C901",  # `{name}` is too complex ({complexity} > {max_complexity})
    # flake8-commas ('COM')
    "COM",  # Trailing comma prohibited
    # flake8-copyright ('CPY')
      # NOT YET USED
    # pydocstyle ('D')
#    "D100",  # Missing docstring in public module
#    "D101",  # Missing docstring in public class
#    "D102",  # Missing docstring in public method
#    "D103",  # Missing docstring in public function
#    "D104",  # Missing docstring in public package
#    "D105",  # Missing docstring in magic method
    "D106",  # Missing docstring in public nested class
#    "D107",  # Missing docstring in `__init__`
#    "D200",  # One-line docstring should fit on one line
    "D201",  # No blank lines allowed before function docstring (found {num_lines})
    "D202",  # No blank lines allowed after function docstring (found {num_lines})
    "D204",  # 1 blank line required after class docstring
#    "D205",  # 1 blank line required between summary line and description
    "D206",  # Docstring should be indented with spaces, not tabs
    "D207",  # Docstring is under-indented
    "D208",  # Docstring is over-indented
    "D209",  # Multi-line docstring closing quotes should be on a separate line
    "D210",  # No whitespaces allowed surrounding docstring text
    "D211",  # No blank lines allowed before class docstring
#    "D212",  # Multi-line docstring summary should start at the first line
#    "D213",  # Multi-line docstring summary should start at the second line
#    "D214",  # Section is over-indented ("{name}")
#    "D215",  # Section underline is over-indented ("{name}")
    "D300",  # Use triple double quotes `"""`
    "D301",  # Use `r"""` if any backslashes in a docstring
#    "D400",  # First line should end with a period
#    "D401",  # First line of docstring should be in imperative mood: "{first_line}"
    "D402",  # First line should not be the function's signature
    "D403",  # First word of the first line should be capitalized: `{}` -> `{}`
#    "D404",  # First word of the docstring should not be "This"
    "D405",  # Section name should be properly capitalized ("{name}")
#    "D406",  # Section name should end with a newline ("{name}")
#    "D407",  # Missing dashed underline after section ("{name}")
    "D408",  # Section underline should be in the line following the section's name ("{name}")
    "D409",  # Section underline should match the length of its name ("{name}")
    "D410",  # Missing blank line after section ("{name}")
    "D411",  # Missing blank line before section ("{name}")
#    "D412",  # No blank lines allowed between a section header and its content ("{name}")
#    "D413",  # Missing blank line after last section ("{name}")
    "D414",  # Section has no content ("{name}")
#    "D415",  # First line should end with a period, question mark, or exclamation point
    "D416",  # Section name should end with a colon ("{name}")
    "D417",  # Missing argument description in the docstring for `{definition}`: `{name}`
    "D418",  # Function decorated with `@overload` shouldn't contain a docstring
    "D419",  # Docstring is empty
    # flake8-django ('DJ')
      # Django is not used in Sphinx
    # flake8-datetimez ('DTZ')
    "DTZ",
    # pycodestyle ('E')
    "E",
    # flake8-errmsg ('EM')
    "EM",
    # eradicate ('ERA')
      # NOT YET USED
    # flake8-executable ('EXE')
    "EXE",
    # pyflakes ('F')
    "F",
    # flake8-future-annotations ('FA')
    "FA",
    # flake8-fastapi ('FAST')
      # FastAPI is not used in Sphinx
    # flake8-boolean-trap ('FBT')
      # NOT YET USED
    # flake8-fixme ('FIX')
      # NOT YET USED
    # flynt ('FLY')
    "FLY",
    # refurb ('FURB')
    "FURB",
    # flake8-logging-format ('G')
    "G",
    # isort ('I')
    "I",
    # flake8-import-conventions ('ICN')
    "ICN",  # flake8-import-conventions
    # flake8-no-pep420 ('INP')
    "INP",
    # flake8-gettext ('INT')
    "INT",
    # flake8-implicit-str-concat ('ISC')
      # NOT YET USED
    # flake8-logging ('LOG')
    "LOG",
    # pep8-naming ('N')
      # NOT YET USED
    # numpy-specific rules ('NPY')
      # Numpy is not used in Sphinx
    # pandas-vet ('PD')
      # Pandas is not used in Sphinx
    # perflint ('PERF')
    "PERF",
    # pygrep-hooks ('PGH')
    "PGH",
    # flake8-pie ('PIE')
    "PIE",
    # pylint ('PL', 'PLC', 'PLE', 'PLR', 'PLW')
    "PL",
    # flake8-pytest-style ('PT')
    "PT",
    # flake8-use-pathlib ('PTH')
      # NOT YET USED
    "PYI",
      # Stub files are not used in Sphinx
    # flake8-quotes ('Q')
#    "Q000",  # Double quotes found but single quotes preferred
#    "Q001",  # Single quote multiline found but double quotes preferred
    "Q002",  # Single quote docstring found but double quotes preferred
    "Q003",  # Change outer quotes to avoid escaping inner quotes
    "Q004",  # Unnecessary escape on inner quote character
    # flake8-return ('RET')
    "RET501",  # Do not explicitly `return None` in function if it is the only possible return value
    "RET502",  # Do not implicitly `return None` in function able to return non-`None` value
#    "RET503",  # Missing explicit `return` at the end of function able to return non-`None` value
#    "RET504",  # Unnecessary assignment to `{name}` before `return` statement
#    "RET505",  # Unnecessary `{branch}` after `return` statement
#    "RET506",  # Unnecessary `{branch}` after `raise` statement
    "RET507",  # Unnecessary `{branch}` after `continue` statement
    "RET508",  # Unnecessary `{branch}` after `break` statement
    # flake8-raise ('RSE')
    "RSE",
    # ruff-specific rules ('RUF')
#    "RUF001",  # String contains ambiguous {}. Did you mean {}?
    "RUF002",  # Docstring contains ambiguous {}. Did you mean {}?
#    "RUF003",  # Comment contains ambiguous {}. Did you mean {}?
    "RUF005",  # Consider `{expression}` instead of concatenation
    "RUF006",  # Store a reference to the return value of `{expr}.{method}`
    "RUF007",  # Prefer `itertools.pairwise()` over `zip()` when iterating over successive pairs
    "RUF008",  # Do not use mutable default values for dataclass attributes
    "RUF009",  # Do not perform function call `{name}` in dataclass defaults
    "RUF010",  # Use explicit conversion flag
#    "RUF012",  # Mutable class attributes should be annotated with `typing.ClassVar`
    "RUF013",  # PEP 484 prohibits implicit `Optional`
#    "RUF015",  # Prefer `next({iterable})` over single element slice
    "RUF016",  # Slice in indexed access to type `{value_type}` uses type `{index_type}` instead of an integer
    "RUF017",  # Avoid quadratic list summation
    "RUF018",  # Avoid assignment expressions in `assert` statements
    "RUF019",  # Unnecessary key check before dictionary access
    "RUF020",  # `{never_like} | T` is equivalent to `T`
#    "RUF021",  # Parenthesize `a and b` expressions when chaining `and` and `or` together, to make the precedence clear
#    "RUF022",  # `__all__` is not sorted
#    "RUF023",  # `{}.__slots__` is not sorted
    "RUF024",  # Do not pass mutable objects as values to `dict.fromkeys`
    "RUF026",  # `default_factory` is a positional-only argument to `defaultdict`
#    "RUF027",  # Possible f-string without an `f` prefix
#    "RUF028",  # This suppression comment is invalid because {}
#    "RUF029",  # Function `{name}` is declared `async`, but doesn't `await` or use `async` features.
    "RUF030",  # `print()` expression in `assert` statement is likely unintentional
#    "RUF031",  # Use parentheses for tuples in subscripts.
    "RUF032",  # `Decimal()` called with float literal argument
    "RUF033",  # `__post_init__` method with argument defaults
    "RUF034",  # Useless if-else condition
#    "RUF100",  # Unused `noqa` directive
    "RUF101",  # `{original}` is a redirect to `{target}`
    "RUF200",  # Failed to parse pyproject.toml: {message}
    # flake8-bandit ('S')
    "S",
    # flake8-simplify ('SIM')
    "SIM",  # flake8-simplify
    # flake8-self ('SLF')
      # NOT YET USED
    # flake8-slots ('SLOT')
    "SLOT",
    # flake8-debugger ('T10')
    "T10",
    # flake8-print ('T20')
    "T20",
    # flake8-type-checking ('TCH')
    "TCH",
    # flake8-todos ('TD')
#    "TD001",  # Invalid TODO tag: `{tag}`
#    "TD002",  # Missing author in TODO; try: `# TODO(<author_name>): ...` or `# TODO @<author_name>: ...`
#    "TD003",  # Missing issue link on the line following this TODO
#    "TD004",  # Missing colon in TODO
#    "TD005",  # Missing issue description after `TODO`
    "TD006",  # Invalid TODO capitalization: `{tag}` should be `TODO`
    "TD007",  # Missing space after colon in TODO
    # flake8-tidy-imports ('TID')
    "TID",
    # flake8-trio ('TRIO')
      # Trio is not used in Sphinx
    # tryceratops ('TRY')
      # NOT YET USED
    # pyupgrade ('UP')
    "UP",
    # pycodestyle ('W')
    "W",
    # flake8-2020 ('YTT')
    "YTT",
]

[lint.per-file-ignores]
"doc/*" = [
    "ANN",  # documentation doesn't need annotations
    "TC001",  # documentation doesn't need type-checking blocks
]
"doc/conf.py" = ["INP001", "W605"]
"doc/development/tutorials/examples/*" = ["I002", "INP001"]
# allow print() in the tutorial
"doc/development/tutorials/examples/recipe.py" = [
    "FURB118",
    "T201"
]
"sphinx/domains/**" = ["FURB113"]
"tests/test_domains/test_domain_cpp.py" = ["FURB113"]

# from .flake8
"sphinx/*" = ["E241"]

# whitelist ``print`` for stdout messages
"sphinx/_cli/__init__.py" = ["T201"]

# allow use of ``pickle``
"sphinx/{application,builders/__init__,environment/__init__,ext/coverage,search/__init__,versioning}.py" = [
    "S301",
    "S403",
]

# whitelist ``print`` for stdout messages
"sphinx/cmd/build.py" = ["T201"]
"sphinx/cmd/make_mode.py" = ["T201"]
"sphinx/cmd/quickstart.py" = ["T201"]

"sphinx/environment/collectors/toctree.py" = ["B026"]
"sphinx/environment/adapters/toctree.py" = ["B026"]

# whitelist ``print`` for stdout messages
"sphinx/ext/intersphinx/_cli.py" = ["T201"]

# whitelist ``token`` in docstring parsing
"sphinx/ext/napoleon/docstring.py" = ["S105"]

# whitelist ``print`` for stdout messages
"sphinx/testing/fixtures.py" = ["T201"]

# Ruff bug: https://github.com/astral-sh/ruff/issues/6540
"sphinx/transforms/i18n.py" = ["PGH004"]

# Function wrappers
"sphinx/ext/autodoc/importer.py" = ["D402"]
"sphinx/util/requests.py" = ["D402"]

"sphinx/search/*" = ["E501"]

# whitelist ``token`` in date format parsing
"sphinx/util/i18n.py" = ["S105"]

# whitelist ``token`` in literal parsing
"sphinx/writers/html5.py" = ["S105"]

"tests/*" = [
    "E501",
    "ANN",  # tests don't need annotations
    "D402",
    "PLC1901",  # whitelist comparisons to the empty string ('')
    "S301",  # allow use of ``pickle``
    "S403",  # allow use of ``pickle``
    "T201",  # whitelist ``print`` for tests
]

# these tests need old ``typing`` generic aliases
"tests/test_util/test_util_typing.py" = ["UP006", "UP007", "UP035"]
"tests/test_util/typing_test_data.py" = ["FA100", "I002", "PYI030", "UP006", "UP007", "UP035"]

"utils/*" = [
    "T201",  # whitelist ``print`` for stdout messages
    "ANN",  # utilities don't need annotations
]

[lint.pycodestyle]
max-line-length = 95

[lint.flake8-quotes]
inline-quotes = "single"

[lint.isort]
forced-separate = [
    "tests",
]
required-imports = [
    "from __future__ import annotations",
]

[format]
preview = true
quote-style = "single"
exclude = [
    "sphinx/addnodes.py",
    "sphinx/application.py",
    "sphinx/builders/latex/constants.py",
    "sphinx/config.py",
    "sphinx/domains/__init__.py",
    "sphinx/domains/c/_parser.py",
    "sphinx/domains/c/_ids.py",
    "sphinx/domains/c/__init__.py",
    "sphinx/domains/c/_symbol.py",
    "sphinx/domains/c/_ast.py",
    "sphinx/domains/changeset.py",
    "sphinx/domains/citation.py",
    "sphinx/domains/cpp/_parser.py",
    "sphinx/domains/cpp/_ids.py",
    "sphinx/domains/cpp/__init__.py",
    "sphinx/domains/cpp/_symbol.py",
    "sphinx/domains/cpp/_ast.py",
    "sphinx/domains/index.py",
    "sphinx/domains/javascript.py",
    "sphinx/domains/math.py",
    "sphinx/domains/python/_annotations.py",
    "sphinx/domains/python/__init__.py",
    "sphinx/domains/python/_object.py",
    "sphinx/domains/rst.py",
    "sphinx/domains/std/__init__.py",
    "sphinx/ext/autodoc/__init__.py",
    "sphinx/ext/autodoc/directive.py",
    "sphinx/ext/autodoc/importer.py",
    "sphinx/ext/autodoc/mock.py",
    "sphinx/ext/autodoc/preserve_defaults.py",
    "sphinx/ext/autodoc/type_comment.py",
    "sphinx/ext/autodoc/typehints.py",
    "sphinx/ext/autosectionlabel.py",
    "sphinx/ext/autosummary/__init__.py",
    "sphinx/ext/coverage.py",
    "sphinx/ext/doctest.py",
    "sphinx/ext/duration.py",
    "sphinx/ext/extlinks.py",
    "sphinx/ext/githubpages.py",
    "sphinx/ext/graphviz.py",
    "sphinx/ext/ifconfig.py",
    "sphinx/ext/imgconverter.py",
    "sphinx/ext/imgmath.py",
    "sphinx/ext/inheritance_diagram.py",
    "sphinx/ext/linkcode.py",
    "sphinx/ext/mathjax.py",
    "sphinx/ext/todo.py",
    "sphinx/ext/viewcode.py",
    "sphinx/registry.py",
]