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Deeply check that method signatures match, and allow for nested RPITITs

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This commit is contained in:
Michael Goulet
2022-09-02 21:02:59 +00:00
parent 1f03edeabe
commit cdf78073c5
13 changed files with 231 additions and 52 deletions
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9
compiler/rustc_ast_lowering/src/lib.rs
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@@ -1358,10 +1358,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
}
ImplTraitContext::InTrait => {
self.lower_impl_trait_in_trait(span, def_node_id, |lctx| {
lctx.lower_param_bounds(
bounds,
ImplTraitContext::Disallowed(ImplTraitPosition::Trait),
)
lctx.lower_param_bounds(bounds, ImplTraitContext::InTrait)
})
}
ImplTraitContext::Universal => {
@@ -1559,8 +1556,6 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
) -> hir::TyKind<'hir> {
let opaque_ty_def_id = self.local_def_id(opaque_ty_node_id);
self.with_hir_id_owner(opaque_ty_node_id, |lctx| {
// FIXME(RPITIT): This should be a more descriptive ImplTraitPosition, i.e. nested RPITIT
// FIXME(RPITIT): We _also_ should support this eventually
let hir_bounds = lower_bounds(lctx);
let rpitit_placeholder = hir::ImplTraitPlaceholder { bounds: hir_bounds };
let rpitit_item = hir::Item {
@@ -2073,7 +2068,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
let bound = lctx.lower_async_fn_output_type_to_future_bound(
output,
output.span(),
ImplTraitContext::Disallowed(ImplTraitPosition::TraitReturn),
ImplTraitContext::InTrait,
);
arena_vec![lctx; bound]
});