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77 lines
2.4 KiB
77 lines
2.4 KiB
8 months ago
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"""Sphinx deprecation classes and utilities."""
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from __future__ import annotations
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import warnings
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class RemovedInSphinx80Warning(DeprecationWarning):
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pass
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class RemovedInSphinx90Warning(PendingDeprecationWarning):
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pass
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RemovedInNextVersionWarning = RemovedInSphinx80Warning
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def _deprecation_warning(
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module: str,
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attribute: str,
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canonical_name: str = '',
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*,
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remove: tuple[int, int],
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raises: bool = False,
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) -> None:
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"""Helper function for module-level deprecations using ``__getattr__``.
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:param module: The module containing a deprecated object.
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:param attribute: The name of the deprecated object.
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:param canonical_name: Optional fully-qualified name for its replacement.
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:param remove: Target version for removal.
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:param raises: Indicate whether to raise an exception instead of a warning.
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When *raises* is ``True``, an :exc:`AttributeError` is raised instead
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of emitting a warning so that it is easy to locate deprecated objects
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in tests that could suppress deprecation warnings.
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Usage::
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# deprecated name -> (object to return, canonical path or empty string, removal version)
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_DEPRECATED_OBJECTS = {
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'deprecated_name': (object_to_return, 'fully_qualified_replacement_name', (8, 0)),
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}
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def __getattr__(name: str) -> Any:
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if name not in _DEPRECATED_OBJECTS:
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msg = f'module {__name__!r} has no attribute {name!r}'
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raise AttributeError(msg)
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from sphinx.deprecation import _deprecation_warning
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deprecated_object, canonical_name, remove = _DEPRECATED_OBJECTS[name]
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_deprecation_warning(__name__, name, canonical_name, remove=remove)
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return deprecated_object
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"""
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if remove == (8, 0):
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warning_class: type[Warning] = RemovedInSphinx80Warning
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elif remove == (9, 0):
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warning_class = RemovedInSphinx90Warning
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else:
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msg = f'removal version {remove!r} is invalid!'
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raise RuntimeError(msg)
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qualname = f'{module}.{attribute}'
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if canonical_name:
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message = f'The alias {qualname!r} is deprecated, use {canonical_name!r} instead.'
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else:
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message = f'{qualname!r} is deprecated.'
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if raises:
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raise AttributeError(message)
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message = f'{message} Check CHANGES for Sphinx API modifications.'
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warnings.warn(message, warning_class, stacklevel=3)
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