bjoernager/rust
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add predicate evaluation logic

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This commit is contained in:
Boxy 2023-02-17 09:32:33 +00:00
parent e919d7e348
commit 90c8d6bbe4
9 changed files with 124 additions and 18 deletions
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16
compiler/rustc_trait_selection/src/solve/mod.rs
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@ -25,7 +25,7 @@ use rustc_infer::traits::query::NoSolution;
use rustc_infer::traits::Obligation;
use rustc_middle::infer::canonical::Certainty as OldCertainty;
use rustc_middle::traits::solve::{ExternalConstraints, ExternalConstraintsData};
use rustc_middle::ty::{self, TyCtxt};
use rustc_middle::ty::{self, Ty, TyCtxt};
use rustc_middle::ty::{
CoercePredicate, RegionOutlivesPredicate, SubtypePredicate, ToPredicate, TypeOutlivesPredicate,
};
@ -290,8 +290,8 @@ impl<'a, 'tcx> EvalCtxt<'a, 'tcx> {
ty::PredicateKind::Clause(ty::Clause::RegionOutlives(predicate)) => {
self.compute_region_outlives_goal(Goal { param_env, predicate })
}
ty::PredicateKind::Clause(ty::Clause::ConstArgHasType(..)) => {
unimplemented!()
ty::PredicateKind::Clause(ty::Clause::ConstArgHasType(ct, ty)) => {
self.compute_const_arg_has_type_goal(Goal { param_env, predicate: (ct, ty) })
}
ty::PredicateKind::Subtype(predicate) => {
self.compute_subtype_goal(Goal { param_env, predicate })
@ -474,6 +474,16 @@ impl<'a, 'tcx> EvalCtxt<'a, 'tcx> {
}
}
}
#[instrument(level = "debug", skip(self), ret)]
fn compute_const_arg_has_type_goal(
&mut self,
goal: Goal<'tcx, (ty::Const<'tcx>, Ty<'tcx>)>,
) -> QueryResult<'tcx> {
let (ct, ty) = goal.predicate;
let nested_goals = self.infcx.eq(goal.param_env, ct.ty(), ty)?;
self.evaluate_all_and_make_canonical_response(nested_goals)
}
}
impl<'tcx> EvalCtxt<'_, 'tcx> {