Tried adding autodoc support (#19)

scanpydoc/elegant_typehints/__init__.py

@@ -53,6 +53,7 @@ def x() -> Tuple[int, float]:
 from sphinx.application import Sphinx
 from sphinx.config import Config
 from docutils.parsers.rst import roles
+from sphinx.ext.autodoc import ClassDocumenter
 
 from .. import _setup_sig, metadata
 
@@ -99,6 +100,12 @@ def setup(app: Sphinx) -> Dict[str, Any]:
             name, partial(_role_annot, additional_classes=name.split("-"))
         )
 
+    from .autodoc_patch import dir_head_adder
+
+    ClassDocumenter.add_directive_header = dir_head_adder(
+        qualname_overrides, ClassDocumenter.add_directive_header
+    )
+
     from .return_tuple import process_docstring  # , process_signature
 
     app.connect("autodoc-process-docstring", process_docstring)

scanpydoc/elegant_typehints/autodoc_patch.py

@@ -0,0 +1,51 @@
+from functools import wraps
+from typing import Mapping, Callable, Tuple
+
+from docutils.statemachine import StringList
+from sphinx.ext.autodoc import ClassDocumenter
+
+
+def dir_head_adder(
+    qualname_overrides: Mapping[str, str],
+    orig: Callable[[ClassDocumenter, str], None],
+):
+    @wraps(orig)
+    def add_directive_header(self: ClassDocumenter, sig: str) -> None:
+        orig(self, sig)
+        lines: StringList = self.directive.result
+        role, direc = (
+            ("exc", "exception")
+            if issubclass(self.object, BaseException)
+            else ("class", "class")
+        )
+        for old, new in qualname_overrides.items():
+            # Currently, autodoc doesn’t link to bases using :exc:
+            lines.replace(f":class:`{old}`", f":{role}:`{new}`")
+            # But maybe in the future it will
+            lines.replace(f":{role}:`{old}`", f":{role}:`{new}`")
+            old_mod, old_cls = old.rsplit(".", 1)
+            new_mod, new_cls = new.rsplit(".", 1)
+            replace_multi_suffix(
+                lines,
+                (f".. py:{direc}:: {old_cls}", f"   :module: {old_mod}"),
+                (f".. py:{direc}:: {new_cls}", f"   :module: {new_mod}"),
+            )
+
+    return add_directive_header
+
+
+def replace_multi_suffix(lines: StringList, old: Tuple[str, str], new: Tuple[str, str]):
+    if len(old) != len(new) != 2:
+        raise NotImplementedError("Only supports replacing 2 lines")
+    for l, line in enumerate(lines):
+        start = line.find(old[0])
+        if start == -1:
+            continue
+        prefix = line[:start]
+        suffix = line[start + len(old[0]) :]
+        if lines[l + 1].startswith(prefix + old[1]):
+            break
+    else:
+        return
+    lines[l + 0] = prefix + new[0] + suffix
+    lines[l + 1] = prefix + new[1]

tests/conftest.py

@@ -6,7 +6,7 @@
 from docutils.writers import Writer
 from sphinx.application import Sphinx
 from sphinx.io import read_doc
-from sphinx.testing.fixtures import make_app, test_params
+from sphinx.testing.fixtures import make_app, test_params  # noqa
 from sphinx.testing.path import path as STP
 from sphinx.util import rst
 from sphinx.util.docutils import sphinx_domains

tests/test_elegant_typehints.py

@@ -1,6 +1,9 @@
 import inspect
 import re
+import sys
 import typing as t
+from pathlib import Path
+from types import ModuleType
 
 try:
     from typing import Literal
@@ -19,23 +22,28 @@
 from scanpydoc.elegant_typehints.return_tuple import process_docstring
 
 
-TestCls = type("Class", (), {})
-TestCls.__module__ = "_testmod"
-TestExc = type("Excep", (RuntimeError,), {})
-TestExc.__module__ = "_testmod"
+_testmod = sys.modules["_testmod"] = ModuleType("_testmod")
+_testmod.Class = type("Class", (), dict(__module__="_testmod"))
+_testmod.SubCl = type("SubCl", (_testmod.Class,), dict(__module__="_testmod"))
+_testmod.Excep = type("Excep", (RuntimeError,), dict(__module__="_testmod"))
+_testmod.Excep2 = type("Excep2", (_testmod.Excep,), dict(__module__="_testmod"))
 
 
 @pytest.fixture
 def app(make_app_setup) -> Sphinx:
     return make_app_setup(
+        master_doc="index",
         extensions=[
+            "sphinx.ext.autodoc",
             "sphinx.ext.napoleon",
             "sphinx_autodoc_typehints",
             "scanpydoc.elegant_typehints",
         ],
         qualname_overrides={
             "_testmod.Class": "test.Class",
+            "_testmod.SubCl": "test.SubCl",
             "_testmod.Excep": "test.Excep",
+            "_testmod.Excep2": "test.Excep2",
         },
     )
 
@@ -143,20 +151,20 @@ def test_literal(app):
 
 
 def test_qualname_overrides_class(app):
-    assert TestCls.__module__ == "_testmod"
-    assert _format_terse(TestCls) == ":py:class:`~test.Class`"
+    assert _testmod.Class.__module__ == "_testmod"
+    assert _format_terse(_testmod.Class) == ":py:class:`~test.Class`"
 
 
 def test_qualname_overrides_exception(app):
-    assert TestExc.__module__ == "_testmod"
-    assert _format_terse(TestExc) == ":py:exc:`~test.Excep`"
+    assert _testmod.Excep.__module__ == "_testmod"
+    assert _format_terse(_testmod.Excep) == ":py:exc:`~test.Excep`"
 
 
 def test_qualname_overrides_recursive(app):
-    assert _format_terse(t.Union[TestCls, str]) == (
+    assert _format_terse(t.Union[_testmod.Class, str]) == (
         r":py:class:`~test.Class`, :py:class:`str`"
     )
-    assert _format_full(t.Union[TestCls, str]) == (
+    assert _format_full(t.Union[_testmod.Class, str]) == (
         r":py:data:`~typing.Union`\["
         r":py:class:`~test.Class`, "
         r":py:class:`str`"
@@ -165,10 +173,10 @@ def test_qualname_overrides_recursive(app):
 
 
 def test_fully_qualified(app):
-    assert _format_terse(t.Union[TestCls, str], True) == (
+    assert _format_terse(t.Union[_testmod.Class, str], True) == (
         r":py:class:`test.Class`, :py:class:`str`"
     )
-    assert _format_full(t.Union[TestCls, str], True) == (
+    assert _format_full(t.Union[_testmod.Class, str], True) == (
         r":py:data:`typing.Union`\[" r":py:class:`test.Class`, " r":py:class:`str`" r"]"
     )
 
@@ -222,6 +230,28 @@ def test_typing_class_nested(app):
     )
 
 
+@pytest.mark.parametrize(
+    "direc,base,sub",
+    [
+        ("autoclass", "Class", "SubCl"),
+        ("autoexception", "Excep", "Excep2"),
+    ],
+)
+def test_autodoc(app, direc, base, sub):
+    Path(app.srcdir, "index.rst").write_text(
+        f"""\
+.. {direc}:: _testmod.{sub}
+   :show-inheritance:
+"""
+    )
+    app.build()
+    out = Path(app.outdir, "index.html").read_text()
+    assert not app._warning.getvalue(), app._warning.getvalue()
+    assert re.search(rf"<code[^>]*>test\.</code><code[^>]*>{sub}</code>", out), out
+    assert f'<a class="headerlink" href="#test.{sub}"' in out, out
+    assert re.search(rf"Bases: <code[^>]*><span[^>]*>test\.{base}", out), out
+
+
 @pytest.mark.parametrize(
     "docstring",
     [