rust-lang / rust-lang/rust-analyzer
Add an action to convert structure update syntax to explicit field passing
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Description
i.e. consider this:
fn f() {
struct S { a: u8, b: u8, c: u8 }
let s = S { a: 0, b: 1, c: 2 };
let s = S { b: 4, ..s };
// ^^^ cursor somewhere here
}
==>>
fn f() {
struct S { a: u8, b: u8, c: u8 }
let s = S { a: 0, b: 1, c: 2 };
let s = S { b: 4, a: s.a, c: s.c };
}
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 provides a Rust example of the desired structure-update conversion but names no files, tests, or entry points. Start by locating rust-analyzer's existing assist/action infrastructure for structure expressions and inspect similar transformations. Done means the action expands ..s into explicit field assignments while preserving explicitly supplied fields.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- devtools
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100