rust-lang / rust-lang/rust-analyzer
rustc json diagnostics parsing error
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Description
rust-analyzer version: 0.3.2490-standalone
rustc version: 1.87.0
editor or extension: Helix / Neovim (any lsp client)
I am trying to get diagnostics to work on a project without cargo. Meson does support clippy output via clippy-driver, so I changed the check.overrideCommand, however, rust-analyzer fails with: ERROR synthetic syntax. Looking at the json output of cargo clippy and clippy-driver/rustc, they seem to be structured slightly differently:
json outputs
I can reproduce the issue with a simple main.rs containing an unused variable and setting check.overrideCommand to rustc src/main.rs --emit metadata --out-dir /tmp --error-format=json
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
Start with rust-analyzer's handling of check.overrideCommand output and compare the linked cargo clippy and clippy-driver/rustc JSON examples. Reproduce the synthetic syntax error with main.rs and the provided rustc command; done means diagnostics from that command parse successfully without the error.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100