I've been wanting to add type hints for the _drgn C extension for
awhile. The main blocker was that there is a large overlap between the
documentation (in docs/api_reference.rst) and the stub file, and I
really didn't want to duplicate the information. Therefore, it was a
requirement that the the documentation could be generated from the stub
file, or vice versa. Unfortunately, none of the existing tools that I
could find supported this very well. So, I bit the bullet and wrote my
own Sphinx extension that uses the stub file as the source of truth (and
subsumes my old autopackage extension and gen_docstrings script).
The stub file is probably incomplete/inaccurate in places, but this
should be a good starting point to improve on.
Closes#22.
drgn.helpers has a couple of undocumented generic helpers. We might as
well document them. They're using type hints, so we need to use a sphinx
extension that strips the type hints out of the signature and adds them
to the documentation. We can also do the same for execscript().
Hopefully it can be used for the C extension documentation in the
future, too.
drgn has pretty thorough in-program documentation, but it doesn't have a
nice overview or introduction to the basic concepts. This commit adds
that using Sphinx. In order to avoid documenting everything in two
places, the libdrgn bindings have their docstrings generated from the
API documentation. The alternative would be to use Sphinx's autodoc
extension, but that's not as flexible and would also require building
the extension to build the docs. The documentation for the helpers is
generated using autodoc and a small custom extension.
