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rustc_hir: replace debug_fn with unstable fmt::from_fn

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This commit is contained in:
Yotam Ofek 2025-01-23 18:48:16 +00:00
parent 8231e8599e
commit 815be937ab
2 changed files with 8 additions and 17 deletions
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24
compiler/rustc_hir/src/hir.rs
View file

@ -1285,13 +1285,13 @@ impl fmt::Debug for OwnerNodes<'_> {
.field("node", &self.nodes[ItemLocalId::ZERO])
.field(
"parents",
&self
.nodes
.iter_enumerated()
.map(|(id, parented_node)| {
debug_fn(move |f| write!(f, "({id:?}, {:?})", parented_node.parent))
})
.collect::<Vec<_>>(),
&fmt::from_fn(|f| {
f.debug_list()
.entries(self.nodes.iter_enumerated().map(|(id, parented_node)| {
fmt::from_fn(move |f| write!(f, "({id:?}, {:?})", parented_node.parent))
}))
.finish()
}),
)
.field("bodies", &self.bodies)
.field("opt_hash_including_bodies", &self.opt_hash_including_bodies)
@ -4638,15 +4638,5 @@ mod size_asserts {
// tidy-alphabetical-end
}
fn debug_fn(f: impl Fn(&mut fmt::Formatter<'_>) -> fmt::Result) -> impl fmt::Debug {
struct DebugFn<F>(F);
impl<F: Fn(&mut fmt::Formatter<'_>) -> fmt::Result> fmt::Debug for DebugFn<F> {
fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
(self.0)(fmt)
}
}
DebugFn(f)
}
#[cfg(test)]
mod tests;

1
compiler/rustc_hir/src/lib.rs
View file

@ -6,6 +6,7 @@
#![allow(internal_features)]
#![feature(associated_type_defaults)]
#![feature(closure_track_caller)]
#![feature(debug_closure_helpers)]
#![feature(exhaustive_patterns)]
#![feature(let_chains)]
#![feature(never_type)]