feat: emit SCIP from rust-analyzer
hi rust-analyzer team
I'm one of the engineers at Sourcegraph (and have done a few small changes related to the LSIF work done in rust-analyzer). Recently, we've moved to a new protocol as the primary way to interact with Sourcegraph (LSIF is still possible to upload, so existing jobs will not stop working any time soon). This new protocol is SCIP (I linked a blog post below with more information).
I've implemented SCIP support (based largely on the existing LSIF support). In addition to supporting the existing features that `rust-analyzer`'s LSIF support does, this PR adds the ability to move between crates on sourcegraph.com. So if both your project and a dependency are indexed, you would be able to hop to the particular version and view the source code. I'd be happy to record a demo of that on my local instance if you're interested.
There are a few TODO's left in the code (some that you might have insights on) which I'm happy to fix in this PR, but I just wanted to open this up for discussion first.
Thanks for your time :)
TJ
- [announcing scip](https://about.sourcegraph.com/blog/announcing-scip)
fix: Fix panics on GATs involving const generics
This workaround avoids constant crashing of rust analyzer when using GATs with const generics,
even when the const generics are only on the `impl` block.
The workaround treats GATs as non-existing if either itself or the parent has const generics and
removes relevant panicking code-paths.
Fixes#11989, fixes#12193
Consider bounds on inherent impl in method resolution
There are three type-related things we should consider in method resolution: `Self` type, receiver type, and impl bounds. While we check the first two and impl bounds on trait impls, we've been ignoring the impl bounds on inherent impls. With this patch rust-analyzer now takes them into account and is able to select the appropriate inherent method.
Resolves#5441Resolves#12308
internal: Build release binaries on `ubuntu-20.04`
Ubuntu 18.04 is still available until December 1st, but will start failing from time to time, which is not something we want when building nightlies.
feat: Generate static method using Self::assoc() syntax
This change improves the `generate_function` assist to support generating static methods/associated functions using the `Self::assoc()` syntax. Previously, one could generate a static method, but only when specifying the type name directly (like `Foo::assoc()`). After this change, `Self` is supported as well as the type name.
Fixes#13012
