1952: Create an assist for applying De Morgan's Law r=matklad a=cronokirby
Fixes#1807
This assist can transform expressions of the form `!x || !y` into
`!(x && y)`. This also works with `&&`.
This assist will only trigger if the cursor is on the central logical
operator.
The main limitation of this current implementation is that both operands
need to be an explicit negation, either of the form `!x`, or `x != y`.
More operands could be accepted, but this would complicate the implementation
quite a bit.
Co-authored-by: Lúcás Meier <cronokirby@gmail.com>
1. `command` has been added to change the default cargo-watch command
2. `check-arguments` has been renamed to `arguments` as a consequence
Thoses changes were merged in #1434
This appears to have been introduced ages ago in
be742a5877
but has since been removed.
As it stands, it is problematic if multiple instances of the
rust-analyzer LSP are launched during the same VS Code session because
VS Code complains about multiple LSP servers trying to register the
same command.
Most LSP servers workaround this by parameterizing the command by the
process id. For example, this is where `rls` does this:
ff0b9057c8/rls/src/server/mod.rs (L413-L421)
Though `apply_code_action` does not seems to be used, so it seems better
to delete it than to parameterize it.
Can be used like this:
```
$ cargo run --release -p ra_cli -- \
analysis-bench ../chalk/ \
--complete ../chalk/chalk-engine/src/logic.rs:94:0
loading: 225.970093ms
from scratch: 8.492373325s
no change: 445.265µs
trivial change: 95.631242ms
```
Or like this:
```
$ cargo run --release -p ra_cli -- \
analysis-bench ../chalk/ \
--highlight ../chalk/chalk-engine/src/logic.rs
loading: 209.873484ms
from scratch: 9.504916942s
no change: 7.731119ms
trivial change: 124.984039ms
```
"from scratch" includes initial analysis of the relevant bits of the
project
"no change" just asks the same question for the second time. It
measures overhead on assembling the answer outside of salsa.
"trivial change" doesn't do an actual salsa change, it just advances
the revision. This test how fast is salsa at validating things.
