bjoernager/rust
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Remove movability from TyKind::Coroutine

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This commit is contained in:
Michael Goulet 2023-12-21 01:52:10 +00:00
parent f4d794ea0b
commit fcb42b42d6
84 changed files with 212 additions and 220 deletions
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46
compiler/rustc_trait_selection/src/traits/select/mod.rs
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@ -2176,7 +2176,6 @@ impl<'tcx> SelectionContext<'_, 'tcx> {
ty::Dynamic(..)
| ty::Str
| ty::Slice(..)
| ty::Coroutine(_, _, hir::Movability::Static)
| ty::Foreign(..)
| ty::Ref(_, _, hir::Mutability::Mut) => None,
@ -2185,26 +2184,31 @@ impl<'tcx> SelectionContext<'_, 'tcx> {
Where(obligation.predicate.rebind(tys.iter().collect()))
}
ty::Coroutine(_, args, hir::Movability::Movable) => {
if self.tcx().features().coroutine_clone {
let resolved_upvars =
self.infcx.shallow_resolve(args.as_coroutine().tupled_upvars_ty());
let resolved_witness =
self.infcx.shallow_resolve(args.as_coroutine().witness());
if resolved_upvars.is_ty_var() || resolved_witness.is_ty_var() {
// Not yet resolved.
Ambiguous
} else {
let all = args
.as_coroutine()
.upvar_tys()
.iter()
.chain([args.as_coroutine().witness()])
.collect::<Vec<_>>();
Where(obligation.predicate.rebind(all))
ty::Coroutine(coroutine_def_id, args) => {
match self.tcx().movability(coroutine_def_id) {
hir::Movability::Static => None,
hir::Movability::Movable => {
if self.tcx().features().coroutine_clone {
let resolved_upvars =
self.infcx.shallow_resolve(args.as_coroutine().tupled_upvars_ty());
let resolved_witness =
self.infcx.shallow_resolve(args.as_coroutine().witness());
if resolved_upvars.is_ty_var() || resolved_witness.is_ty_var() {
// Not yet resolved.
Ambiguous
} else {
let all = args
.as_coroutine()
.upvar_tys()
.iter()
.chain([args.as_coroutine().witness()])
.collect::<Vec<_>>();
Where(obligation.predicate.rebind(all))
}
} else {
None
}
}
} else {
None
}
}
@ -2307,7 +2311,7 @@ impl<'tcx> SelectionContext<'_, 'tcx> {
t.rebind(vec![ty])
}
ty::Coroutine(_, args, _) => {
ty::Coroutine(_, args) => {
let ty = self.infcx.shallow_resolve(args.as_coroutine().tupled_upvars_ty());
let witness = args.as_coroutine().witness();
t.rebind([ty].into_iter().chain(iter::once(witness)).collect())