rust-lang / rust-lang/rustc_public
Add `GenericArgs::as_closure`
Open
Nobody has claimed this yet.
- Dominant language
- Rust
- Stars
- 125
- Forks
- 19
- PR merge metrics
- No merged PRs in 30d
Description
GenericArgs is missing as_closure, which is super useful as closures have a quirky encoding into generics that make it particularly annoying to manipulate.
Relatedly, having DefId::is_closure_like would be nice!
Contributor guide
No contributing guide indexed for this repository
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 by reading the GenericArgs API and the linked rustc_middle GenericArgs::as_closure documentation to understand the closure-specific generic encoding. Check how DefId is represented before considering the related is_closure_like request; done means the requested GenericArgs::as_closure behavior is available and validated.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- compilers
- Issue type
- Feature
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 55/100