diff options
Diffstat (limited to 'compiler/rustc_trait_selection/src/traits/query/type_op/ascribe_user_type.rs')
-rw-r--r-- | compiler/rustc_trait_selection/src/traits/query/type_op/ascribe_user_type.rs | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/compiler/rustc_trait_selection/src/traits/query/type_op/ascribe_user_type.rs b/compiler/rustc_trait_selection/src/traits/query/type_op/ascribe_user_type.rs new file mode 100644 index 000000000..86b015767 --- /dev/null +++ b/compiler/rustc_trait_selection/src/traits/query/type_op/ascribe_user_type.rs @@ -0,0 +1,23 @@ +use crate::infer::canonical::{Canonicalized, CanonicalizedQueryResponse}; +use crate::traits::query::Fallible; +use rustc_middle::ty::{ParamEnvAnd, TyCtxt}; + +pub use rustc_middle::traits::query::type_op::AscribeUserType; + +impl<'tcx> super::QueryTypeOp<'tcx> for AscribeUserType<'tcx> { + type QueryResponse = (); + + fn try_fast_path( + _tcx: TyCtxt<'tcx>, + _key: &ParamEnvAnd<'tcx, Self>, + ) -> Option<Self::QueryResponse> { + None + } + + fn perform_query( + tcx: TyCtxt<'tcx>, + canonicalized: Canonicalized<'tcx, ParamEnvAnd<'tcx, Self>>, + ) -> Fallible<CanonicalizedQueryResponse<'tcx, ()>> { + tcx.type_op_ascribe_user_type(canonicalized) + } +} |