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Rename HIR TypeBinding to AssocItemConstraint and related cleanup

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This commit is contained in:
León Orell Valerian Liehr 2024-05-27 23:53:46 +02:00
parent 0a59f11362
commit 34c56c45cf
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GPG key ID: D17A07215F68E713
108 changed files with 878 additions and 818 deletions
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33
compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs
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@ -1468,12 +1468,8 @@ impl<'a, 'tcx> BoundVarContext<'a, 'tcx> {
depth: usize,
generic_args: &'tcx hir::GenericArgs<'tcx>,
) {
if generic_args.parenthesized == hir::GenericArgsParentheses::ParenSugar {
self.visit_fn_like_elision(
generic_args.inputs(),
Some(generic_args.bindings[0].ty()),
false,
);
if let Some((inputs, output)) = generic_args.paren_sugar_inputs_output() {
self.visit_fn_like_elision(inputs, Some(output), false);
return;
}
@ -1608,8 +1604,8 @@ impl<'a, 'tcx> BoundVarContext<'a, 'tcx> {
}
}
// Hack: when resolving the type `XX` in binding like `dyn
// Foo<'b, Item = XX>`, the current object-lifetime default
// Hack: When resolving the type `XX` in an assoc ty binding like
// `dyn Foo<'b, Item = XX>`, the current object-lifetime default
// would be to examine the trait `Foo` to check whether it has
// a lifetime bound declared on `Item`. e.g., if `Foo` is
// declared like so, then the default object lifetime bound in
@ -1637,7 +1633,7 @@ impl<'a, 'tcx> BoundVarContext<'a, 'tcx> {
// Resolve lifetimes found in the bindings, so either in the type `XX` in `Item = XX` or
// in the trait ref `YY<...>` in `Item: YY<...>`.
for binding in generic_args.bindings {
for constraint in generic_args.constraints {
let scope = Scope::ObjectLifetimeDefault {
lifetime: if has_lifetime_parameter {
None
@ -1646,7 +1642,7 @@ impl<'a, 'tcx> BoundVarContext<'a, 'tcx> {
},
s: self.scope,
};
// If the binding is parenthesized, then this must be `feature(return_type_notation)`.
// If the args are parenthesized, then this must be `feature(return_type_notation)`.
// In that case, introduce a binder over all of the function's early and late bound vars.
//
// For example, given
@ -1659,13 +1655,14 @@ impl<'a, 'tcx> BoundVarContext<'a, 'tcx> {
// `for<'a> T::Trait<'a, x(): for<'b> Other<'b>>`
// this is going to expand to something like:
// `for<'a> for<'r, T> <T as Trait<'a>>::x::<'r, T>::{opaque#0}: for<'b> Other<'b>`.
if binding.gen_args.parenthesized == hir::GenericArgsParentheses::ReturnTypeNotation {
if constraint.gen_args.parenthesized == hir::GenericArgsParentheses::ReturnTypeNotation
{
let bound_vars = if let Some(type_def_id) = type_def_id
&& self.tcx.def_kind(type_def_id) == DefKind::Trait
&& let Some((mut bound_vars, assoc_fn)) = BoundVarContext::supertrait_hrtb_vars(
self.tcx,
type_def_id,
binding.ident,
constraint.ident,
ty::AssocKind::Fn,
) {
bound_vars.extend(self.tcx.generics_of(assoc_fn.def_id).own_params.iter().map(
@ -1686,22 +1683,22 @@ impl<'a, 'tcx> BoundVarContext<'a, 'tcx> {
} else {
self.tcx
.dcx()
.span_delayed_bug(binding.ident.span, "bad return type notation here");
.span_delayed_bug(constraint.ident.span, "bad return type notation here");
vec![]
};
self.with(scope, |this| {
let scope = Scope::Supertrait { bound_vars, s: this.scope };
this.with(scope, |this| {
let (bound_vars, _) = this.poly_trait_ref_binder_info();
this.record_late_bound_vars(binding.hir_id, bound_vars);
this.visit_assoc_type_binding(binding)
this.record_late_bound_vars(constraint.hir_id, bound_vars);
this.visit_assoc_item_constraint(constraint)
});
});
} else if let Some(type_def_id) = type_def_id {
let bound_vars = BoundVarContext::supertrait_hrtb_vars(
self.tcx,
type_def_id,
binding.ident,
constraint.ident,
ty::AssocKind::Type,
)
.map(|(bound_vars, _)| bound_vars);
@ -1710,10 +1707,10 @@ impl<'a, 'tcx> BoundVarContext<'a, 'tcx> {
bound_vars: bound_vars.unwrap_or_default(),
s: this.scope,
};
this.with(scope, |this| this.visit_assoc_type_binding(binding));
this.with(scope, |this| this.visit_assoc_item_constraint(constraint));
});
} else {
self.with(scope, |this| this.visit_assoc_type_binding(binding));
self.with(scope, |this| this.visit_assoc_item_constraint(constraint));
}
}
}