Source code for sphinx_toolbox.more_autodoc.genericalias

#!/usr/bin/env python3
#
#  genericalias.py
"""
Documenter for alias, which usually manifest as `type aliases`_.

.. _type aliases: https://docs.python.org/3/library/typing.html#type-aliases

.. versionadded:: 0.6.0
.. extensions:: sphinx_toolbox.more_autodoc.genericalias

.. note::

	:mod:`sphinx_toolbox.more_autodoc.genericalias` is only supported on Python 3.7 and above.

"""
#
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# stdlib
from typing import Any

# 3rd party
from docutils.statemachine import StringList
from sphinx.application import Sphinx
from sphinx.ext.autodoc import SUPPRESS, Options
from sphinx.ext.autodoc.directive import DocumenterBridge  # noqa: F401
from sphinx.locale import _
from sphinx.util import inspect

# this package
from sphinx_toolbox._data_documenter import DataDocumenter
from sphinx_toolbox.more_autodoc.typehints import format_annotation
from sphinx_toolbox.utils import SphinxExtMetadata, metadata_add_version

__all__ = ["PrettyGenericAliasDocumenter", "setup"]


[docs]class PrettyGenericAliasDocumenter(DataDocumenter): # pragma: no cover (<Py37) """ Specialized Documenter subclass for GenericAliases, with prettier output than Sphinx's one. """ objtype = "genericalias" directivetype = "data" priority = DataDocumenter.priority + 2
[docs] @classmethod def can_document_member(cls, member: Any, membername: str, isattr: bool, parent: Any) -> bool: """ Called to see if a member can be documented by this documenter. """ return inspect.isgenericalias(member)
[docs] def add_directive_header(self, sig: str) -> None: """ Add the directive header and options to the generated content. """ self.options = Options(self.options) self.options["annotation"] = SUPPRESS super().add_directive_header(sig)
[docs] def add_content(self, more_content: Any, no_docstring: bool = False): """ Add the autodocumenter content. :param more_content: :param no_docstring: """ name = format_annotation(self.object) content = StringList([_("Alias of %s") % name], source='') DataDocumenter.add_content(self, content)
[docs]@metadata_add_version def setup(app: Sphinx) -> SphinxExtMetadata: """ Setup :mod:`sphinx_toolbox.more_autodoc.genericalias`. :param app: The Sphinx application. """ app.setup_extension("sphinx.ext.autodoc") app.add_autodocumenter(PrettyGenericAliasDocumenter, override=True) return {"parallel_read_safe": True}