bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Record binder for bare trait object in LifetimeCollectVisitor

Browse source
This commit is contained in:
Michael Goulet 2023-08-11 03:13:35 +00:00
parent a9b2c6a0ce
commit bbe7a96bec
3 changed files with 79 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

17
compiler/rustc_ast_lowering/src/lifetime_collector.rs
View file

@ -1,7 +1,7 @@
use super::ResolverAstLoweringExt;
use rustc_ast::visit::{self, BoundKind, LifetimeCtxt, Visitor};
use rustc_ast::{GenericBounds, Lifetime, NodeId, PathSegment, PolyTraitRef, Ty, TyKind};
use rustc_hir::def::LifetimeRes;
use rustc_hir::def::{DefKind, LifetimeRes, Res};
use rustc_middle::span_bug;
use rustc_middle::ty::ResolverAstLowering;
use rustc_span::symbol::{kw, Ident};
@ -77,7 +77,20 @@ impl<'ast> Visitor<'ast> for LifetimeCollectVisitor<'ast> {
}
fn visit_ty(&mut self, t: &'ast Ty) {
match t.kind {
match &t.kind {
TyKind::Path(None, _) => {
// We can sometimes encounter bare trait objects
// which are represented in AST as paths.
if let Some(partial_res) = self.resolver.get_partial_res(t.id)
&& let Some(Res::Def(DefKind::Trait | DefKind::TraitAlias, _)) = partial_res.full_res()
{
self.current_binders.push(t.id);
visit::walk_ty(self, t);
self.current_binders.pop();
} else {
visit::walk_ty(self, t);
}
}
TyKind::BareFn(_) => {
self.current_binders.push(t.id);
visit::walk_ty(self, t);