bjoernager/rust
bjoernager/rust
1
Fork 0
Code Issues Pull requests Activity

change is_subtype to relate_types

Browse source
This commit is contained in:
ouz-a 2023-09-30 13:44:31 +03:00
parent cd7f471931
commit 6f0c5ee2d4
15 changed files with 128 additions and 86 deletions
Download patch file Download diff file Expand all files Collapse all files

15
compiler/rustc_trait_selection/src/traits/engine.rs
View file

@ -23,6 +23,7 @@ use rustc_middle::traits::query::NoSolution;
use rustc_middle::ty::error::TypeError;
use rustc_middle::ty::ToPredicate;
use rustc_middle::ty::TypeFoldable;
use rustc_middle::ty::Variance;
use rustc_middle::ty::{self, Ty, TyCtxt};
use rustc_session::config::TraitSolver;
@ -156,6 +157,20 @@ impl<'a, 'tcx> ObligationCtxt<'a, 'tcx> {
.map(|infer_ok| self.register_infer_ok_obligations(infer_ok))
}
pub fn relate<T: ToTrace<'tcx>>(
&self,
cause: &ObligationCause<'tcx>,
param_env: ty::ParamEnv<'tcx>,
variance: Variance,
expected: T,
actual: T,
) -> Result<(), TypeError<'tcx>> {
self.infcx
.at(cause, param_env)
.relate(DefineOpaqueTypes::Yes, expected, variance, actual)
.map(|infer_ok| self.register_infer_ok_obligations(infer_ok))
}
/// Checks whether `expected` is a supertype of `actual`: `expected :> actual`.
pub fn sup<T: ToTrace<'tcx>>(
&self,