bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Pull Span::find_ancestor_inside loop into its own function.

Browse source
This commit is contained in:
Mara Bos 2021-08-30 20:17:12 +02:00
parent 76d18cfb89
commit 2a06daa863
2 changed files with 11 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

8
compiler/rustc_span/src/lib.rs
View file

@ -597,6 +597,14 @@ impl Span {
if !expn_data.is_root() { Some(expn_data.call_site) } else { None }
}
/// Walk down the expansion ancestors to find a span that's contained within `outer`.
pub fn find_ancestor_inside(mut self, outer: Span) -> Option<Span> {
while !outer.contains(self) {
self = self.parent()?;
}
Some(self)
}
/// Edition of the crate from which this span came.
pub fn edition(self) -> edition::Edition {
self.ctxt().edition()