rust-lang / rust-lang/rust-analyzer
Gray dead code inside a function
Open
Nobody has claimed this yet.
A-ide
A-mir
C-feature
E-medium
- Dominant language
- Rust
- Stars
- 16.9k
- Forks
- 2.2k
- Avg merge
- 1d 12h
- Merged PRs (30d)
- 72
Description
Typescript language server will highlight dead code after return or similar in gray. Since such dead code is not represented in MIR, we can implement this feature by just graying everything and then un-gray ast nodes that are represented in MIR.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
The issue names no files, tests, or entry points. Start by tracing rust-analyzer's semantic highlighting and MIR-backed AST handling, using TypeScript language server dead-code highlighting as the behavior reference; done means AST nodes absent from MIR are gray while represented nodes retain normal highlighting.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust, typescript
- Domain
- devtools
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 30/100