X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Flibrustc%2Fty%2Fstructural_impls.rs;h=9336e7beae20a5b36c4c2422d5c2db9780d4516e;hb=9eae6ba7fad883300c83d77782ae78b0db6f3bb7;hp=53d516e581b2a153b05b94e0fb6078c774fc2eb6;hpb=a65ced5d161d31e7e5b097b36bff0f51ec0843bc;p=rust.git

diff --git a/src/librustc/ty/structural_impls.rs b/src/librustc/ty/structural_impls.rs
index 53d516e581b..9336e7beae2 100644
--- a/src/librustc/ty/structural_impls.rs
+++ b/src/librustc/ty/structural_impls.rs
@@ -220,17 +220,6 @@ fn lift_to_tcx<'b, 'gcx>(&self, tcx: TyCtxt<'b, 'gcx, 'tcx>) -> Option<Self::Lif
     }
 }
 
-impl<'a, 'tcx> Lift<'tcx> for ty::ItemSubsts<'a> {
-    type Lifted = ty::ItemSubsts<'tcx>;
-    fn lift_to_tcx<'b, 'gcx>(&self, tcx: TyCtxt<'b, 'gcx, 'tcx>) -> Option<Self::Lifted> {
-        tcx.lift(&self.substs).map(|substs| {
-            ty::ItemSubsts {
-                substs: substs
-            }
-        })
-    }
-}
-
 impl<'a, 'tcx> Lift<'tcx> for ty::adjustment::AutoBorrow<'a> {
     type Lifted = ty::adjustment::AutoBorrow<'tcx>;
     fn lift_to_tcx<'b, 'gcx>(&self, tcx: TyCtxt<'b, 'gcx, 'tcx>) -> Option<Self::Lifted> {
@@ -654,18 +643,6 @@ fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool {
     }
 }
 
-impl<'tcx> TypeFoldable<'tcx> for ty::ItemSubsts<'tcx> {
-    fn super_fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(&self, folder: &mut F) -> Self {
-        ty::ItemSubsts {
-            substs: self.substs.fold_with(folder),
-        }
-    }
-
-    fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool {
-        self.substs.visit_with(visitor)
-    }
-}
-
 impl<'tcx> TypeFoldable<'tcx> for ty::adjustment::AutoBorrow<'tcx> {
     fn super_fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(&self, folder: &mut F) -> Self {
         match *self {