replace GeneratorSubsts inside related types

src/librustc/infer/opaque_types/mod.rs

@@ -912,7 +912,7 @@ impl TypeFolder<'tcx> for ReverseMapper<'tcx> {
                         }
                     }));
 
-                self.tcx.mk_generator(def_id, ty::GeneratorSubsts { substs }, movability)
+                self.tcx.mk_generator(def_id, substs, movability)
             }
 
             ty::Param(..) => {

src/librustc/mir/mod.rs

@@ -15,7 +15,7 @@ use crate::ty::layout::VariantIdx;
 use crate::ty::print::{FmtPrinter, Printer};
 use crate::ty::subst::{Subst, SubstsRef};
 use crate::ty::{
-    self, AdtDef, CanonicalUserTypeAnnotations, GeneratorSubsts, Region, Ty, TyCtxt,
+    self, AdtDef, CanonicalUserTypeAnnotations, Region, Ty, TyCtxt,
     UserTypeAnnotationIndex,
 };
 
@@ -2189,7 +2189,7 @@ pub enum AggregateKind<'tcx> {
     Adt(&'tcx AdtDef, VariantIdx, SubstsRef<'tcx>, Option<UserTypeAnnotationIndex>, Option<usize>),
 
     Closure(DefId, SubstsRef<'tcx>),
-    Generator(DefId, GeneratorSubsts<'tcx>, hir::GeneratorMovability),
+    Generator(DefId, SubstsRef<'tcx>, hir::GeneratorMovability),
 }
 
 #[derive(Copy, Clone, Debug, PartialEq, Eq, RustcEncodable, RustcDecodable, HashStable)]

src/librustc/traits/mod.rs

@@ -610,7 +610,7 @@ pub struct VtableImplData<'tcx, N> {
 #[derive(Clone, PartialEq, Eq, RustcEncodable, RustcDecodable, HashStable)]
 pub struct VtableGeneratorData<'tcx, N> {
     pub generator_def_id: DefId,
-    pub substs: ty::GeneratorSubsts<'tcx>,
+    pub substs: SubstsRef<'tcx>,
     /// Nested obligations. This can be non-empty if the generator
     /// signature contains associated types.
     pub nested: Vec<N>

src/librustc/ty/context.rs

@@ -29,7 +29,7 @@ use crate::traits;
 use crate::traits::{Clause, Clauses, GoalKind, Goal, Goals};
 use crate::ty::{self, DefIdTree, Ty, TypeAndMut};
 use crate::ty::{TyS, TyKind, List};
-use crate::ty::{AdtKind, AdtDef, GeneratorSubsts, Region, Const};
+use crate::ty::{AdtKind, AdtDef, Region, Const};
 use crate::ty::{PolyFnSig, InferTy, ParamTy, ProjectionTy, ExistentialPredicate, Predicate};
 use crate::ty::RegionKind;
 use crate::ty::{TyVar, TyVid, IntVar, IntVid, FloatVar, FloatVid, ConstVid};

src/librustc/ty/layout.rs

@@ -1410,7 +1410,7 @@ impl<'tcx> LayoutCx<'tcx, TyCtxt<'tcx>> {
         use SavedLocalEligibility::*;
         let tcx = self.tcx;
 
-        let subst_field = |ty: Ty<'tcx>| { ty.subst(tcx, substs.substs) };
+        let subst_field = |ty: Ty<'tcx>| { ty.subst(tcx, substs) };
 
         let info = tcx.generator_layout(def_id);
         let (ineligible_locals, assignments) = self.generator_saved_local_eligibility(&info);
@@ -1429,7 +1429,7 @@ impl<'tcx> LayoutCx<'tcx, TyCtxt<'tcx>> {
             .map(|local| subst_field(info.field_tys[local]))
             .map(|ty| tcx.mk_maybe_uninit(ty))
             .map(|ty| self.layout_of(ty));
-        let prefix_layouts = substs.prefix_tys(def_id, tcx)
+        let prefix_layouts = substs.as_generator().prefix_tys(def_id, tcx)
             .map(|ty| self.layout_of(ty))
             .chain(iter::once(Ok(discr_layout)))
             .chain(promoted_layouts)

src/librustc/ty/print/obsolete.rs

@@ -8,7 +8,7 @@
 use rustc::hir::def_id::DefId;
 use rustc::mir::interpret::ConstValue;
 use rustc::ty::subst::SubstsRef;
-use rustc::ty::{self, Const, GeneratorSubsts, Instance, Ty, TyCtxt};
+use rustc::ty::{self, Const, Instance, Ty, TyCtxt};
 use rustc::{bug, hir};
 use std::fmt::Write;
 use std::iter;

src/librustc/ty/sty.rs

@@ -2110,7 +2110,7 @@ impl<'tcx> TyS<'tcx> {
         match self.kind {
             TyKind::Adt(adt, _) => Some(adt.variant_range()),
             TyKind::Generator(def_id, substs, _) =>
-                Some(substs.assert_generator().variant_range(def_id, tcx)),
+                Some(substs.as_generator().variant_range(def_id, tcx)),
             _ => None,
         }
     }