bjoernager/rust
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Pretty placeholders using their names

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This commit is contained in:
Michael Goulet 2023-02-17 21:21:27 +00:00
parent ec40b1a393
commit 6f3706ea71
3 changed files with 11 additions and 6 deletions
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5
compiler/rustc_middle/src/ty/print/pretty.rs
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@ -735,7 +735,10 @@ pub trait PrettyPrinter<'tcx>:
p!(print(data))
}
}
ty::Placeholder(placeholder) => p!(write("Placeholder({:?})", placeholder)),
ty::Placeholder(placeholder) => match placeholder.name {
ty::BoundTyKind::Anon(_) => p!(write("Placeholder({:?})", placeholder)),
ty::BoundTyKind::Param(_, name) => p!(write("{}", name)),
},
ty::Alias(ty::Opaque, ty::AliasTy { def_id, substs, .. }) => {
// We use verbose printing in 'NO_QUERIES' mode, to
// avoid needing to call `predicates_of`. This should