revlog: using two new functions in C capsule from Rust code...
revlog: using two new functions in C capsule from Rust code
We expose `index_length` and `index_node` in the C capsule, so that
the Rust representation of the C index can implement the `RevlogIndex`
trait.
Because our `Node` is actually a one-field struct, we have
to decorate it for direct FFI exchange with the C `char*`
It would be a good thing to get a length from the C layer, but doing
so right now would probably interfere with the upcoming changes that
will happen there for the hash length.
Differential Revision:
https://phab.mercurial-scm.org/D8152
