use crate::infer::canonical::{Canonical, CanonicalQueryResponse};
use crate::traits::ObligationCtxt;
use rustc_middle::traits::query::NoSolution;
use rustc_middle::traits::ObligationCause;
use rustc_middle::ty::{ParamEnvAnd, TyCtxt};
pub use rustc_middle::traits::query::type_op::Eq;
impl<'tcx> super::QueryTypeOp<'tcx> for Eq<'tcx> {
type QueryResponse = ();
fn try_fast_path(
_tcx: TyCtxt<'tcx>,
key: &ParamEnvAnd<'tcx, Eq<'tcx>>,
) -> Option<Self::QueryResponse> {
if key.value.a == key.value.b { Some(()) } else { None }
}
fn perform_query(
tcx: TyCtxt<'tcx>,
canonicalized: Canonical<'tcx, ParamEnvAnd<'tcx, Self>>,
) -> Result<CanonicalQueryResponse<'tcx, ()>, NoSolution> {
tcx.type_op_eq(canonicalized)
}
fn perform_locally_with_next_solver(
ocx: &ObligationCtxt<'_, 'tcx>,
key: ParamEnvAnd<'tcx, Self>,
) -> Result<Self::QueryResponse, NoSolution> {
ocx.eq(&ObligationCause::dummy(), key.param_env, key.value.a, key.value.b)?;
Ok(())
}
}