Tracking Issue for proc_macro::Span::{start, end}

[m-ou-se]

Feature gate: #![feature(proc_macro_span_shrink)]

This feature adds span.start() and span.end() which give empty spans right at the start and end of the span. (Just like shrink_to_lo() and shrink_to_hi() inside rustc.)

Public API

// proc_macro

impl Span {
     pub fn start(&self) -> Span;
     pub fn end(&self) -> Span;
}

Steps / History

• Implementation: Add proc_macro::Span::{before, after}. #86165
• Rename to start and end: Implement proposed API for proc_macro_span #111571
• Merge tracking with Tracking issue for proc_macro::Span inspection APIs #54725

Unresolved Questions

• None yet.

[dtolnay]

As of #111571, these methods are now tracked by #54725.