Macros should have an operator type
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Description
Thursday Aug 29, 2013 at 11:55 GMT
For earlier discussion, see https://github.com/rust-lang/rust/issues/8853
This issue was labelled with: A-syntaxext, I-enhancement in the Rust repository
AFAIK there is currently no way to quote an operator such as + or /, and this would be useful to reduce code duplication.
Something like:
macro_rules! foo(
($oper:op) => 10i $oper 20i
)
fn main() {
printfln!("%d", foo!(+));
printfln!("%d", foo!(*));
}
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- 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 earlier discussion in Rust issue #8853 and the example in this issue. Determine the intended macro_rules syntax and semantics for accepting operators such as +, /, and *, then define what successful expansion and validation should look like.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- compilers
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 30/100