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Rollup merge of #107780 - compiler-errors:instantiate-binder, r=lcnr

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Rename `replace_bound_vars_with_*` to `instantiate_binder_with_*`

Mentioning "binder" rather than "bound vars", imo, makes it clearer that we're doing something to the binder as a whole.

Also, "instantiate" is the verb that I'm always reaching for when I'm looking for these functions, and the name that we use in the new solver anyways.

r? types
This commit is contained in:
Matthias Krüger 2023-02-08 18:32:44 +01:00 • committed by GitHub
commit ec65285fdd
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28 changed files with 67 additions and 60 deletions
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6
compiler/rustc_trait_selection/src/solve/fulfill.rs
View file

@ -74,7 +74,7 @@ impl<'tcx> TraitEngine<'tcx> for FulfillmentCtxt<'tcx> {
)
}
ty::PredicateKind::Subtype(pred) => {
let (a, b) = infcx.replace_bound_vars_with_placeholders(
let (a, b) = infcx.instantiate_binder_with_placeholders(
goal.predicate.kind().rebind((pred.a, pred.b)),
);
let expected_found = ExpectedFound::new(true, a, b);
@ -84,7 +84,7 @@ impl<'tcx> TraitEngine<'tcx> for FulfillmentCtxt<'tcx> {
)
}
ty::PredicateKind::Coerce(pred) => {
let (a, b) = infcx.replace_bound_vars_with_placeholders(
let (a, b) = infcx.instantiate_binder_with_placeholders(
goal.predicate.kind().rebind((pred.a, pred.b)),
);
let expected_found = ExpectedFound::new(false, a, b);
@ -94,7 +94,7 @@ impl<'tcx> TraitEngine<'tcx> for FulfillmentCtxt<'tcx> {
)
}
ty::PredicateKind::ConstEquate(a, b) => {
let (a, b) = infcx.replace_bound_vars_with_placeholders(
let (a, b) = infcx.instantiate_binder_with_placeholders(
goal.predicate.kind().rebind((a, b)),
);
let expected_found = ExpectedFound::new(true, a, b);

6
compiler/rustc_trait_selection/src/solve/infcx_ext.rs
View file

@ -26,7 +26,7 @@ pub(super) trait InferCtxtExt<'tcx> {
rhs: T,
) -> Result<Vec<Goal<'tcx, ty::Predicate<'tcx>>>, NoSolution>;
fn instantiate_bound_vars_with_infer<T: TypeFoldable<'tcx> + Copy>(
fn instantiate_binder_with_infer<T: TypeFoldable<'tcx> + Copy>(
&self,
value: ty::Binder<'tcx, T>,
) -> T;
@ -65,11 +65,11 @@ impl<'tcx> InferCtxtExt<'tcx> for InferCtxt<'tcx> {
})
}
fn instantiate_bound_vars_with_infer<T: TypeFoldable<'tcx> + Copy>(
fn instantiate_binder_with_infer<T: TypeFoldable<'tcx> + Copy>(
&self,
value: ty::Binder<'tcx, T>,
) -> T {
self.replace_bound_vars_with_fresh_vars(
self.instantiate_binder_with_fresh_vars(
DUMMY_SP,
LateBoundRegionConversionTime::HigherRankedType,
value,

2
compiler/rustc_trait_selection/src/solve/mod.rs
View file

@ -304,7 +304,7 @@ impl<'a, 'tcx> EvalCtxt<'a, 'tcx> {
}
}
} else {
let kind = self.infcx.replace_bound_vars_with_placeholders(kind);
let kind = self.infcx.instantiate_binder_with_placeholders(kind);
let goal = goal.with(self.tcx(), ty::Binder::dummy(kind));
let (_, certainty) = self.evaluate_goal(goal)?;
self.make_canonical_response(certainty)

2
compiler/rustc_trait_selection/src/solve/project_goals.rs
View file

@ -323,7 +323,7 @@ impl<'tcx> assembly::GoalKind<'tcx> for ProjectionPredicate<'tcx> {
{
ecx.infcx.probe(|_| {
let assumption_projection_pred =
ecx.infcx.instantiate_bound_vars_with_infer(poly_projection_pred);
ecx.infcx.instantiate_binder_with_infer(poly_projection_pred);
let nested_goals = ecx.infcx.eq(
goal.param_env,
goal.predicate.projection_ty,

2
compiler/rustc_trait_selection/src/solve/trait_goals.rs
View file

@ -72,7 +72,7 @@ impl<'tcx> assembly::GoalKind<'tcx> for TraitPredicate<'tcx> {
// FIXME: Constness and polarity
ecx.infcx.probe(|_| {
let assumption_trait_pred =
ecx.infcx.instantiate_bound_vars_with_infer(poly_trait_pred);
ecx.infcx.instantiate_binder_with_infer(poly_trait_pred);
let nested_goals = ecx.infcx.eq(
goal.param_env,
goal.predicate.trait_ref,

4
compiler/rustc_trait_selection/src/solve/trait_goals/structural_traits.rs
View file

@ -54,7 +54,7 @@ pub(super) fn instantiate_constituent_tys_for_auto_trait<'tcx>(
}
ty::GeneratorWitness(types) => {
Ok(infcx.replace_bound_vars_with_placeholders(types).to_vec())
Ok(infcx.instantiate_binder_with_placeholders(types).to_vec())
}
ty::GeneratorWitnessMIR(..) => todo!(),
@ -174,7 +174,7 @@ pub(super) fn instantiate_constituent_tys_for_copy_clone_trait<'tcx>(
}
ty::GeneratorWitness(types) => {
Ok(infcx.replace_bound_vars_with_placeholders(types).to_vec())
Ok(infcx.instantiate_binder_with_placeholders(types).to_vec())
}
ty::GeneratorWitnessMIR(..) => todo!(),