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rustdoc: render the return type of cross-crate Fn-family trait bounds in trait-object types

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This commit is contained in:
León Orell Valerian Liehr 2022-11-02 15:23:25 +01:00
parent 1ac7034481
commit 71561f82c3
1 changed files with 7 additions and 7 deletions
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14
src/librustdoc/clean/utils.rs
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@ -4,7 +4,7 @@ use crate::clean::render_macro_matchers::render_macro_matcher;
use crate::clean::{
clean_doc_module, clean_middle_const, clean_middle_region, clean_middle_ty, inline, Crate,
ExternalCrate, Generic, GenericArg, GenericArgs, ImportSource, Item, ItemKind, Lifetime, Path,
PathSegment, Primitive, PrimitiveType, Type, TypeBinding,
PathSegment, Primitive, PrimitiveType, Term, Type, TypeBinding, TypeBindingKind,
};
use crate::core::DocContext;
use crate::html::format::visibility_to_src_with_space;
@ -113,12 +113,12 @@ fn external_generic_args<'tcx>(
ty::Tuple(tys) => tys.iter().map(|t| clean_middle_ty(t, cx, None)).collect::<Vec<_>>().into(),
_ => return GenericArgs::AngleBracketed { args: args.into(), bindings },
};
let output = None;
// FIXME(#20299) return type comes from a projection now
// match types[1].kind {
// ty::Tuple(ref v) if v.is_empty() => None, // -> ()
// _ => Some(types[1].clean(cx))
// };
let output = bindings.into_iter().next().and_then(|binding| match binding.kind {
TypeBindingKind::Equality { term: Term::Type(ty) } if ty != Type::Tuple(Vec::new()) => {
Some(Box::new(ty))
}
_ => None,
});
GenericArgs::Parenthesized { inputs, output }
} else {
GenericArgs::AngleBracketed { args: args.into(), bindings: bindings.into() }