5345: Semantic Highlighting: Emit mutable modifier for 'self' when applicable r=matklad a=Veykril
This PR implements emitting the mutable modifier for the self keyword when applicable for semantic highlighting as mentioned in #5041. The rendered highlighting test html file:
![firefox_5lbsFNBqsT](https://user-images.githubusercontent.com/3757771/87346245-a5a07280-c551-11ea-9051-e5901255f8c9.png)
As you can see it does not emit the modifier when `self` is not used in a mutable context even if it is declared mutably in the enclosing function. I'm not sure if this is actually something wanted or not.
Co-authored-by: Lukas Wirth <lukastw97@gmail.com>
4996: Correctly generate new struct field in file containing struct def r=matklad a=TimoFreiberg
WIP because the test doesn't pass.
Testing the fix by hand looked good, although quickfixes seem to not support setting the editor cursor yet, which i think we want for "generate missing defs from usage" fixes.
Co-authored-by: Timo Freiberg <timo.freiberg@gmail.com>
5270: Add argument count mismatch diagnostic r=matklad a=jonas-schievink
Closes https://github.com/rust-analyzer/rust-analyzer/issues/4025.
This currently has one false positive on this line, where `max` is resolved to `Iterator::max` instead of `Ord::max`:
8aa10c00a4/crates/expect/src/lib.rs (L263)
(I have no idea why it thinks that `usize` is an `Iterator`)
TODO:
* [x] Tests
* [x] Improve diagnostic text for method calls
Co-authored-by: Jonas Schievink <jonas.schievink@ferrous-systems.com>