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| author | bors[bot] <26634292+bors[bot]@users.noreply.github.com> | 2020-03-24 23:28:57 +0000 |
|---|---|---|
| committer | GitHub <[email protected]> | 2020-03-24 23:28:57 +0000 |
| commit | 6ad1a0711631d8017791a6dfe85bbe205d6c7414 (patch) | |
| tree | ce2d6448ff8770c8fe73086eefb85dab38d298d8 /.gitignore | |
| parent | fae627174aecae0b4f4d2c087a856eda1a97a1ac (diff) | |
| parent | 7b35da04bf56a5461321a6dca515dcd29f44b57f (diff) | |
Merge #3710
3710: Inlay hints for method chaining pattern r=matklad a=M-J-Hooper
This PR adds inlay hints on method call chains:
It is not only explicit `MethodCall`s where this can be helpful. The heuristic used here is that whenever any expression is followed by a new line and then a dot, it resembles a call chain and type information can be #useful.
Changes:
- A new `InlayKind` for chaining.
- New option for disabling this type of hints.
- Tree traversal rules for identifying the chaining hints.
- VSCode decorators in the extension layer (and associated types).
Notes:
- IntelliJ has additional rules and configuration on this topic. Eg. minimum length of chain to start displaying hints and only displaying distinct types in the chain.
- I am checking for chaining on every `ast::Expr` in the tree; Are there performance concerns there?
This is my first contribution (to RA and to Rust in general) so would appreciate any feedback.
The only issue I can find the references this feature is #2741.
Co-authored-by: Matt Hooper <[email protected]>
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