Support pub(restricted) visibilities

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18 stars (18 stars)

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No merged PRs in 30d (No merged PRs in 30d)

Description

iota! {
    pub(crate) const A: u8 = 1 << iota;
        | B
        | C
}

error: no rules expected the token `(`
 --> src/main.rs:4:8
  |
4 |     pub(crate) const A: u8 = 1 << iota;
  |        ^ no rules expected this token in macro call

Contributor guide

Research direction

Examine the iota macro's parsing logic to accept `pub(restricted)` visibility modifiers like `pub(crate)`. The error indicates the macro does not expect the `(` token after `pub`. Locate where the macro parses `pub` and extend it to handle the restricted form.

Tech stack

rust

Domain

developer experience

Issue type

Bug

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

2

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

1-3 hours

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

Active

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

Clear

Prerequisites

Rust

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

75