clockworklabs / clockworklabs/SpacetimeDB
Rust bindings-macro: either reject or generate idents for reducer arguments with non-ident pattern bindings
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- Dominant language
- Rust
- Stars
- 25.2k
- Forks
- 1.1k
- Avg merge
- 2d 7h
- Merged PRs (30d)
- 46
Description
The following reducer should either be a macro-expand-time error, or result in a valid ModuleDef with some valid, locally-unique Identifiers as the argument names:
#[derive(SpacetimeType)]
struct SomeProduct {
a: i32,
b: i32,
}
#[reducer]
fn foo(_: &ReducerContext, _: i32, SomeProduct { a, b }: SomeProduct) {
log::info!("{}", a + b);
}
Bonus points: add the above as a test, including valid SDK codegen and client compilation.
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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
No files or existing tests are named. Start by locating the Rust bindings macro's reducer-argument pattern handling and the generated ModuleDef path. Add the destructuring example as a test, then verify that it either fails during macro expansion or produces valid identifiers, SDK codegen, and client compilation.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 38/100