ty, region, origin
);
- assert!(!ty.has_escaping_regions());
+ assert!(!ty.has_escaping_bound_vars());
let components = self.tcx.outlives_components(ty);
self.components_must_outlive(origin, components, region);
// Shouldn't have any LBR here, so we can safely put
// this under a binder below without fear of accidental
// capture.
- assert!(!a.has_escaping_regions());
- assert!(!b.has_escaping_regions());
+ assert!(!a.has_escaping_bound_vars());
+ assert!(!b.has_escaping_bound_vars());
// can't make progress on `A <: B` if both A and B are
// type variables, so record an obligation. We also
debug!("normalize_projection_type(projection_ty={:?})",
projection_ty);
- debug_assert!(!projection_ty.has_escaping_regions());
+ debug_assert!(!projection_ty.has_escaping_bound_vars());
// FIXME(#20304) -- cache
let ty = ty.super_fold_with(self);
match ty.sty {
- ty::Opaque(def_id, substs) if !substs.has_escaping_regions() => { // (*)
+ ty::Opaque(def_id, substs) if !substs.has_escaping_bound_vars() => { // (*)
// Only normalize `impl Trait` after type-checking, usually in codegen.
match self.param_env.reveal {
Reveal::UserFacing => ty,
}
}
- ty::Projection(ref data) if !data.has_escaping_regions() => { // (*)
+ ty::Projection(ref data) if !data.has_escaping_bound_vars() => { // (*)
// (*) This is kind of hacky -- we need to be able to
// handle normalization within binders because
fn fold_ty(&mut self, ty: Ty<'tcx>) -> Ty<'tcx> {
let ty = ty.super_fold_with(self);
match ty.sty {
- ty::Opaque(def_id, substs) if !substs.has_escaping_regions() => {
+ ty::Opaque(def_id, substs) if !substs.has_escaping_bound_vars() => {
// (*)
// Only normalize `impl Trait` after type-checking, usually in codegen.
match self.param_env.reveal {
}
}
- ty::Projection(ref data) if !data.has_escaping_regions() => {
+ ty::Projection(ref data) if !data.has_escaping_bound_vars() => {
// (*)
// (*) This is kind of hacky -- we need to be able to
// handle normalization within binders because
obligation: &TraitObligation<'tcx>,
) -> SelectionResult<'tcx, Selection<'tcx>> {
debug!("select({:?})", obligation);
- debug_assert!(!obligation.predicate.has_escaping_regions());
+ debug_assert!(!obligation.predicate.has_escaping_bound_vars());
let stack = self.push_stack(TraitObligationStackList::empty(), obligation);
match obligation.predicate {
ty::Predicate::Trait(ref t) => {
- debug_assert!(!t.has_escaping_regions());
+ debug_assert!(!t.has_escaping_bound_vars());
let obligation = obligation.with(t.clone());
self.evaluate_trait_predicate_recursively(previous_stack, obligation)
}
},
ty::Predicate::TypeOutlives(ref binder) => {
- assert!(!binder.has_escaping_regions());
- // Check if the type has higher-ranked regions.
- if binder.skip_binder().0.has_escaping_regions() {
+ assert!(!binder.has_escaping_bound_vars());
+ // Check if the type has higher-ranked vars.
+ if binder.skip_binder().0.has_escaping_bound_vars() {
// If so, this obligation is an error (for now). Eventually we should be
// able to support additional cases here, like `for<'a> &'a str: 'a`.
Ok(EvaluatedToErr)
}
} else {
- // If the type has no late bound regions, then if we assign all
+ // If the type has no late bound vars, then if we assign all
// the inference variables in it to be 'static, then the type
// will be 'static itself.
//
"candidate_from_obligation(cache_fresh_trait_pred={:?}, obligation={:?})",
cache_fresh_trait_pred, stack
);
- debug_assert!(!stack.obligation.predicate.has_escaping_regions());
+ debug_assert!(!stack.obligation.predicate.has_escaping_bound_vars());
if let Some(c) =
self.check_candidate_cache(stack.obligation.param_env, &cache_fresh_trait_pred)
placeholder_map: &infer::PlaceholderMap<'tcx>,
snapshot: &infer::CombinedSnapshot<'cx, 'tcx>,
) -> bool {
- debug_assert!(!skol_trait_ref.has_escaping_regions());
+ debug_assert!(!skol_trait_ref.has_escaping_bound_vars());
if self.infcx
.at(&obligation.cause, obligation.param_env)
.sup(ty::Binder::dummy(skol_trait_ref), trait_bound)
self.add_substs(&substs.substs);
}
- &ty::Bound(_) => self.add_flags(TypeFlags::HAS_CANONICAL_VARS),
+ &ty::Bound(bound_ty) => {
+ self.add_flags(TypeFlags::HAS_CANONICAL_VARS);
+ self.add_binder(bound_ty.level);
+ }
&ty::Infer(infer) => {
self.add_flags(TypeFlags::HAS_FREE_LOCAL_NAMES); // it might, right?
&ty::Projection(ref data) => {
// currently we can't normalize projections that
// include bound regions, so track those separately.
- if !data.has_escaping_regions() {
+ if !data.has_escaping_bound_vars() {
self.add_flags(TypeFlags::HAS_NORMALIZABLE_PROJECTION);
}
self.add_flags(TypeFlags::HAS_PROJECTION);
/// bound by `binder` or bound by some binder outside of `binder`.
/// If `binder` is `ty::INNERMOST`, this indicates whether
/// there are any late-bound regions that appear free.
- fn has_regions_bound_at_or_above(&self, binder: ty::DebruijnIndex) -> bool {
- self.visit_with(&mut HasEscapingRegionsVisitor { outer_index: binder })
+ fn has_vars_bound_at_or_above(&self, binder: ty::DebruijnIndex) -> bool {
+ self.visit_with(&mut HasEscapingVarsVisitor { outer_index: binder })
}
/// True if this `self` has any regions that escape `binder` (and
/// hence are not bound by it).
- fn has_regions_bound_above(&self, binder: ty::DebruijnIndex) -> bool {
- self.has_regions_bound_at_or_above(binder.shifted_in(1))
+ fn has_vars_bound_above(&self, binder: ty::DebruijnIndex) -> bool {
+ self.has_vars_bound_at_or_above(binder.shifted_in(1))
}
- fn has_escaping_regions(&self) -> bool {
- self.has_regions_bound_at_or_above(ty::INNERMOST)
+ fn has_escaping_bound_vars(&self) -> bool {
+ self.has_vars_bound_at_or_above(ty::INNERMOST)
}
fn has_type_flags(&self, flags: TypeFlags) -> bool {
}
fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx> {
- if !t.has_regions_bound_at_or_above(self.current_index) {
+ if !t.has_vars_bound_at_or_above(self.current_index) {
return t;
}
}
///////////////////////////////////////////////////////////////////////////
-// Region shifter
+// Shifter
//
-// Shifts the De Bruijn indices on all escaping bound regions by a
+// Shifts the De Bruijn indices on all escaping bound vars by a
// fixed amount. Useful in substitution or when otherwise introducing
// a binding level that is not intended to capture the existing bound
-// regions. See comment on `shift_regions_through_binders` method in
+// vars. See comment on `shift_vars_through_binders` method in
// `subst.rs` for more details.
-pub fn shift_region(region: ty::RegionKind, amount: u32) -> ty::RegionKind {
- match region {
- ty::ReLateBound(debruijn, br) => {
- ty::ReLateBound(debruijn.shifted_in(amount), br)
+struct Shifter<'a, 'gcx: 'a+'tcx, 'tcx: 'a> {
+ tcx: TyCtxt<'a, 'gcx, 'tcx>,
+
+ current_index: ty::DebruijnIndex,
+ amount: u32,
+}
+
+impl Shifter<'a, 'gcx, 'tcx> {
+ pub fn new(tcx: TyCtxt<'a, 'gcx, 'tcx>, amount: u32) -> Self {
+ Shifter {
+ tcx,
+ current_index: ty::INNERMOST,
+ amount,
}
- _ => {
- region
+ }
+}
+
+impl<'a, 'gcx, 'tcx> TypeFolder<'gcx, 'tcx> for Shifter<'a, 'gcx, 'tcx> {
+ fn tcx<'b>(&'b self) -> TyCtxt<'b, 'gcx, 'tcx> { self.tcx }
+
+ fn fold_binder<T: TypeFoldable<'tcx>>(&mut self, t: &ty::Binder<T>) -> ty::Binder<T> {
+ self.current_index.shift_in(1);
+ let t = t.super_fold_with(self);
+ self.current_index.shift_out(1);
+ t
+ }
+
+ fn fold_region(&mut self, r: ty::Region<'tcx>) -> ty::Region<'tcx> {
+ match *r {
+ ty::ReLateBound(debruijn, br) => {
+ if self.amount == 0 || debruijn < self.current_index {
+ r
+ } else {
+ let shifted = ty::ReLateBound(debruijn.shifted_in(self.amount), br);
+ self.tcx.mk_region(shifted)
+ }
+ }
+ _ => r
+ }
+ }
+
+ fn fold_ty(&mut self, ty: ty::Ty<'tcx>) -> ty::Ty<'tcx> {
+ match ty.sty {
+ ty::Bound(bound_ty) => {
+ if self.amount == 0 || bound_ty.level < self.current_index {
+ ty
+ } else {
+ let shifted = ty::BoundTy {
+ level: bound_ty.level.shifted_in(self.amount),
+ var: bound_ty.var,
+ kind: bound_ty.kind,
+ };
+ self.tcx.mk_ty(ty::Bound(shifted))
+ }
+ }
+
+ _ => ty.super_fold_with(self),
}
}
}
-pub fn shift_region_ref<'a, 'gcx, 'tcx>(
- tcx: TyCtxt<'a, 'gcx, 'tcx>,
- region: ty::Region<'tcx>,
- amount: u32)
- -> ty::Region<'tcx>
-{
+pub fn shift_region(region: ty::RegionKind, amount: u32) -> ty::RegionKind {
match region {
- &ty::ReLateBound(debruijn, br) if amount > 0 => {
- tcx.mk_region(ty::ReLateBound(debruijn.shifted_in(amount), br))
+ ty::ReLateBound(debruijn, br) => {
+ ty::ReLateBound(debruijn.shifted_in(amount), br)
}
_ => {
region
}
}
-pub fn shift_regions<'a, 'gcx, 'tcx, T>(tcx: TyCtxt<'a, 'gcx, 'tcx>,
- amount: u32,
- value: &T) -> T
- where T: TypeFoldable<'tcx>
-{
- debug!("shift_regions(value={:?}, amount={})",
+pub fn shift_vars<'a, 'gcx, 'tcx, T>(
+ tcx: TyCtxt<'a, 'gcx, 'tcx>,
+ amount: u32,
+ value: &T
+) -> T where T: TypeFoldable<'tcx> {
+ debug!("shift_vars(value={:?}, amount={})",
value, amount);
- value.fold_with(&mut RegionFolder::new(tcx, &mut false, &mut |region, _current_depth| {
- shift_region_ref(tcx, region, amount)
- }))
+ value.fold_with(&mut Shifter::new(tcx, amount))
}
-/// An "escaping region" is a bound region whose binder is not part of `t`.
+/// An "escaping var" is a bound var whose binder is not part of `t`. A bound var can be a
+/// bound region or a bound type.
///
/// So, for example, consider a type like the following, which has two binders:
///
/// binders of both `'a` and `'b` are part of the type itself. However, if we consider the *inner
/// fn type*, that type has an escaping region: `'a`.
///
-/// Note that what I'm calling an "escaping region" is often just called a "free region". However,
-/// we already use the term "free region". It refers to the regions that we use to represent bound
-/// regions on a fn definition while we are typechecking its body.
+/// Note that what I'm calling an "escaping var" is often just called a "free var". However,
+/// we already use the term "free var". It refers to the regions or types that we use to represent
+/// bound regions or type params on a fn definition while we are typechecking its body.
///
/// To clarify, conceptually there is no particular difference between
-/// an "escaping" region and a "free" region. However, there is a big
+/// an "escaping" var and a "free" var. However, there is a big
/// difference in practice. Basically, when "entering" a binding
/// level, one is generally required to do some sort of processing to
-/// a bound region, such as replacing it with a fresh/placeholder
-/// region, or making an entry in the environment to represent the
-/// scope to which it is attached, etc. An escaping region represents
-/// a bound region for which this processing has not yet been done.
-struct HasEscapingRegionsVisitor {
+/// a bound var, such as replacing it with a fresh/placeholder
+/// var, or making an entry in the environment to represent the
+/// scope to which it is attached, etc. An escaping var represents
+/// a bound var for which this processing has not yet been done.
+struct HasEscapingVarsVisitor {
/// Anything bound by `outer_index` or "above" is escaping
outer_index: ty::DebruijnIndex,
}
-impl<'tcx> TypeVisitor<'tcx> for HasEscapingRegionsVisitor {
+impl<'tcx> TypeVisitor<'tcx> for HasEscapingVarsVisitor {
fn visit_binder<T: TypeFoldable<'tcx>>(&mut self, t: &Binder<T>) -> bool {
self.outer_index.shift_in(1);
let result = t.super_visit_with(self);
// `outer_index`, that means that `t` contains some content
// bound at `outer_index` or above (because
// `outer_exclusive_binder` is always 1 higher than the
- // content in `t`). Therefore, `t` has some escaping regions.
+ // content in `t`). Therefore, `t` has some escaping vars.
t.outer_exclusive_binder > self.outer_index
}
impl<'a, 'b, 'tcx> Instance<'tcx> {
pub fn new(def_id: DefId, substs: &'tcx Substs<'tcx>)
-> Instance<'tcx> {
- assert!(!substs.has_escaping_regions(),
+ assert!(!substs.has_escaping_bound_vars(),
"substs of instance {:?} not normalized for codegen: {:?}",
def_id, substs);
Instance { def: InstanceDef::Item(def_id), substs: substs }
// we simply fallback to the most restrictive rule, which
// requires that `Pi: 'a` for all `i`.
ty::Projection(ref data) => {
- if !data.has_escaping_regions() {
+ if !data.has_escaping_bound_vars() {
// best case: no escaping regions, so push the
// projection and skip the subtree (thus generating no
// constraints for Pi). This defers the choice between
/// or some placeholder type.
pub fn with_self_ty(&self, tcx: TyCtxt<'a, 'gcx, 'tcx>, self_ty: Ty<'tcx>)
-> ty::TraitRef<'tcx> {
- // otherwise the escaping regions would be captured by the binder
- // debug_assert!(!self_ty.has_escaping_regions());
+ // otherwise the escaping vars would be captured by the binder
+ // debug_assert!(!self_ty.has_escaping_bound_vars());
ty::TraitRef {
def_id: self.def_id,
pub fn dummy<'tcx>(value: T) -> Binder<T>
where T: TypeFoldable<'tcx>
{
- debug_assert!(!value.has_escaping_regions());
+ debug_assert!(!value.has_escaping_bound_vars());
Binder(value)
}
pub fn no_late_bound_regions<'tcx>(self) -> Option<T>
where T : TypeFoldable<'tcx>
{
- if self.skip_binder().has_escaping_regions() {
+ if self.skip_binder().has_escaping_bound_vars() {
None
} else {
Some(self.skip_binder().clone())
impl BoundTy {
pub fn new(level: DebruijnIndex, var: BoundTyIndex) -> Self {
- debug_assert_eq!(ty::INNERMOST, level);
BoundTy {
level,
var,
-> ty::ProjectionPredicate<'tcx>
{
// otherwise the escaping regions would be captured by the binders
- debug_assert!(!self_ty.has_escaping_regions());
+ debug_assert!(!self_ty.has_escaping_bound_vars());
ty::ProjectionPredicate {
projection_ty: ty::ProjectionTy {
span,
root_ty: None,
ty_stack_depth: 0,
- region_binders_passed: 0 };
+ binders_passed: 0 };
(*self).fold_with(&mut folder)
}
}
ty_stack_depth: usize,
// Number of region binders we have passed through while doing the substitution
- region_binders_passed: u32,
+ binders_passed: u32,
}
impl<'a, 'gcx, 'tcx> TypeFolder<'gcx, 'tcx> for SubstFolder<'a, 'gcx, 'tcx> {
fn tcx<'b>(&'b self) -> TyCtxt<'b, 'gcx, 'tcx> { self.tcx }
fn fold_binder<T: TypeFoldable<'tcx>>(&mut self, t: &ty::Binder<T>) -> ty::Binder<T> {
- self.region_binders_passed += 1;
+ self.binders_passed += 1;
let t = t.super_fold_with(self);
- self.region_binders_passed -= 1;
+ self.binders_passed -= 1;
t
}
}
};
- self.shift_regions_through_binders(ty)
+ self.shift_vars_through_binders(ty)
}
/// It is sometimes necessary to adjust the debruijn indices during substitution. This occurs
/// As indicated in the diagram, here the same type `&'a int` is substituted once, but in the
/// first case we do not increase the Debruijn index and in the second case we do. The reason
/// is that only in the second case have we passed through a fn binder.
- fn shift_regions_through_binders(&self, ty: Ty<'tcx>) -> Ty<'tcx> {
- debug!("shift_regions(ty={:?}, region_binders_passed={:?}, has_escaping_regions={:?})",
- ty, self.region_binders_passed, ty.has_escaping_regions());
+ fn shift_vars_through_binders(&self, ty: Ty<'tcx>) -> Ty<'tcx> {
+ debug!("shift_vars(ty={:?}, binders_passed={:?}, has_escaping_bound_vars={:?})",
+ ty, self.binders_passed, ty.has_escaping_bound_vars());
- if self.region_binders_passed == 0 || !ty.has_escaping_regions() {
+ if self.binders_passed == 0 || !ty.has_escaping_bound_vars() {
return ty;
}
- let result = ty::fold::shift_regions(self.tcx(), self.region_binders_passed, &ty);
- debug!("shift_regions: shifted result = {:?}", result);
+ let result = ty::fold::shift_vars(self.tcx(), self.binders_passed, &ty);
+ debug!("shift_vars: shifted result = {:?}", result);
result
}
fn shift_region_through_binders(&self, region: ty::Region<'tcx>) -> ty::Region<'tcx> {
- if self.region_binders_passed == 0 || !region.has_escaping_regions() {
+ if self.binders_passed == 0 || !region.has_escaping_bound_vars() {
return region;
}
- self.tcx().mk_region(ty::fold::shift_region(*region, self.region_binders_passed))
+ self.tcx().mk_region(ty::fold::shift_region(*region, self.binders_passed))
}
}
erased_self_ty,
predicates);
- assert!(!erased_self_ty.has_escaping_regions());
+ assert!(!erased_self_ty.has_escaping_bound_vars());
traits::elaborate_predicates(self, predicates)
.filter_map(|predicate| {
// construct such an object, but this seems
// correct even if that code changes).
let ty::OutlivesPredicate(ref t, ref r) = predicate.skip_binder();
- if t == &erased_self_ty && !r.has_escaping_regions() {
+ if t == &erased_self_ty && !r.has_escaping_bound_vars() {
Some(*r)
} else {
None
let infcx = &mut self.infcx;
let param_env = self.param_env;
self.out.iter()
- .inspect(|pred| assert!(!pred.has_escaping_regions()))
+ .inspect(|pred| assert!(!pred.has_escaping_bound_vars()))
.flat_map(|pred| {
let mut selcx = traits::SelectionContext::new(infcx);
let pred = traits::normalize(&mut selcx, param_env, cause.clone(), pred);
self.out.extend(
trait_ref.substs.types()
- .filter(|ty| !ty.has_escaping_regions())
+ .filter(|ty| !ty.has_escaping_bound_vars())
.map(|ty| traits::Obligation::new(cause.clone(),
param_env,
ty::Predicate::WellFormed(ty))));
let trait_ref = data.trait_ref(self.infcx.tcx);
self.compute_trait_ref(&trait_ref, Elaborate::None);
- if !data.has_escaping_regions() {
+ if !data.has_escaping_bound_vars() {
let predicate = trait_ref.to_predicate();
let cause = self.cause(traits::ProjectionWf(data));
self.out.push(traits::Obligation::new(cause, self.param_env, predicate));
}
fn require_sized(&mut self, subty: Ty<'tcx>, cause: traits::ObligationCauseCode<'tcx>) {
- if !subty.has_escaping_regions() {
+ if !subty.has_escaping_bound_vars() {
let cause = self.cause(cause);
let trait_ref = ty::TraitRef {
def_id: self.infcx.tcx.require_lang_item(lang_items::SizedTraitLangItem),
ty::Ref(r, rty, _) => {
// WfReference
- if !r.has_escaping_regions() && !rty.has_escaping_regions() {
+ if !r.has_escaping_bound_vars() && !rty.has_escaping_bound_vars() {
let cause = self.cause(traits::ReferenceOutlivesReferent(ty));
self.out.push(
traits::Obligation::new(
.map(|pred| traits::Obligation::new(cause.clone(),
self.param_env,
pred))
- .filter(|pred| !pred.has_escaping_regions())
+ .filter(|pred| !pred.has_escaping_bound_vars())
.collect()
}
// Note: in fact we only permit builtin traits, not `Bar<'d>`, I
// am looking forward to the future here.
- if !data.has_escaping_regions() {
+ if !data.has_escaping_bound_vars() {
let implicit_bounds =
object_region_bounds(self.infcx.tcx, data);
debug!("get_fn(instance={:?})", instance);
assert!(!instance.substs.needs_infer());
- assert!(!instance.substs.has_escaping_regions());
+ assert!(!instance.substs.has_escaping_bound_vars());
assert!(!instance.substs.has_param_types());
let sig = instance.fn_sig(cx.tcx);
debug!("llvm_type({:#?})", self);
- assert!(!self.ty.has_escaping_regions(), "{:?} has escaping regions", self.ty);
+ assert!(!self.ty.has_escaping_bound_vars(), "{:?} has escaping bound vars", self.ty);
// Make sure lifetimes are erased, to avoid generating distinct LLVM
// types for Rust types that only differ in the choice of lifetimes.
// Theta = [A -> &'a foo]
env.create_simple_region_hierarchy();
- assert!(!env.t_nil().has_escaping_regions());
+ assert!(!env.t_nil().has_escaping_bound_vars());
let t_rptr_free1 = env.t_rptr_free(1);
- assert!(!t_rptr_free1.has_escaping_regions());
+ assert!(!t_rptr_free1.has_escaping_bound_vars());
let t_rptr_bound1 = env.t_rptr_late_bound_with_debruijn(1, d1());
- assert!(t_rptr_bound1.has_escaping_regions());
+ assert!(t_rptr_bound1.has_escaping_bound_vars());
let t_rptr_bound2 = env.t_rptr_late_bound_with_debruijn(1, d2());
- assert!(t_rptr_bound2.has_escaping_regions());
+ assert!(t_rptr_bound2.has_escaping_bound_vars());
// t_fn = fn(A)
let t_param = env.t_param(0);
- assert!(!t_param.has_escaping_regions());
+ assert!(!t_param.has_escaping_bound_vars());
let t_fn = env.t_fn(&[t_param], env.t_nil());
- assert!(!t_fn.has_escaping_regions());
+ assert!(!t_fn.has_escaping_bound_vars());
})
}
}
fn sanitize_type(&mut self, parent: &dyn fmt::Debug, ty: Ty<'tcx>) -> Ty<'tcx> {
- if ty.has_escaping_regions() || ty.references_error() {
+ if ty.has_escaping_bound_vars() || ty.references_error() {
span_mirbug_and_err!(self, parent, "bad type {:?}", ty)
} else {
ty
trait_ty: Ty<'tcx>,
impl_ty: Ty<'tcx>,
output: &mut Vec<MonoItem<'tcx>>) {
- assert!(!trait_ty.needs_subst() && !trait_ty.has_escaping_regions() &&
- !impl_ty.needs_subst() && !impl_ty.has_escaping_regions());
+ assert!(!trait_ty.needs_subst() && !trait_ty.has_escaping_bound_vars() &&
+ !impl_ty.needs_subst() && !impl_ty.has_escaping_bound_vars());
if let ty::Dynamic(ref trait_ty, ..) = trait_ty.sty {
let poly_trait_ref = trait_ty.principal().with_self_ty(tcx, impl_ty);
- assert!(!poly_trait_ref.has_escaping_regions());
+ assert!(!poly_trait_ref.has_escaping_bound_vars());
// Walk all methods of the trait, including those of its supertraits
let methods = tcx.vtable_methods(poly_trait_ref);
// From the full set of obligations, just filter down to the
// region relationships.
implied_bounds.extend(obligations.into_iter().flat_map(|obligation| {
- assert!(!obligation.has_escaping_regions());
+ assert!(!obligation.has_escaping_bound_vars());
match obligation.predicate {
ty::Predicate::Trait(..) |
ty::Predicate::Subtype(..) |
// Create a `PolyFnSig`. Note the oddity that late bound
// regions appearing free in `expected_sig` are now bound up
// in this binder we are creating.
- assert!(!expected_sig.sig.has_regions_bound_above(ty::INNERMOST));
+ assert!(!expected_sig.sig.has_vars_bound_above(ty::INNERMOST));
let bound_sig = ty::Binder::bind(self.tcx.mk_fn_sig(
expected_sig.sig.inputs().iter().cloned(),
expected_sig.sig.output(),
value
}
};
- assert!(!bounds.has_escaping_regions());
+ assert!(!bounds.has_escaping_bound_vars());
let cause = traits::ObligationCause::misc(span, self.body_id);
obligations.extend(traits::predicates_for_generics(cause.clone(),
fn_sig,
substs);
- assert!(!substs.has_escaping_regions());
+ assert!(!substs.has_escaping_bound_vars());
// It is possible for type parameters or early-bound lifetimes
// to appear in the signature of `self`. The substitutions we
fn register_predicate(&self, obligation: traits::PredicateObligation<'tcx>) {
debug!("register_predicate({:?})", obligation);
- if obligation.has_escaping_regions() {
- span_bug!(obligation.cause.span, "escaping regions in predicate {:?}",
+ if obligation.has_escaping_bound_vars() {
+ span_bug!(obligation.cause.span, "escaping bound vars in predicate {:?}",
obligation);
}
self.fulfillment_cx
}
fn normalize_ty(&self, span: Span, ty: Ty<'tcx>) -> Ty<'tcx> {
- if ty.has_escaping_regions() {
+ if ty.has_escaping_bound_vars() {
ty // FIXME: normalization and escaping regions
} else {
self.normalize_associated_types_in(span, &ty)
cause: traits::ObligationCause<'tcx>,
predicates: &ty::InstantiatedPredicates<'tcx>)
{
- assert!(!predicates.has_escaping_regions());
+ assert!(!predicates.has_escaping_bound_vars());
debug!("add_obligations_for_parameters(predicates={:?})",
predicates);
}
},
);
- assert!(!substs.has_escaping_regions());
- assert!(!ty.has_escaping_regions());
+ assert!(!substs.has_escaping_bound_vars());
+ assert!(!ty.has_escaping_bound_vars());
// Write the "user substs" down first thing for later.
let hir_id = self.tcx.hir.node_to_hir_id(node_id);
let span = tcx.hir.span(impl_node_id);
let param_env = tcx.param_env(impl_did);
- assert!(!self_type.has_escaping_regions());
+ assert!(!self_type.has_escaping_bound_vars());
debug!("visit_implementation_of_copy: self_type={:?} (free)",
self_type);
let span = tcx.hir.span(impl_node_id);
let source = tcx.type_of(impl_did);
- assert!(!source.has_escaping_regions());
+ assert!(!source.has_escaping_bound_vars());
let target = {
let trait_ref = tcx.impl_trait_ref(impl_did).unwrap();
assert_eq!(trait_ref.def_id, dispatch_from_dyn_trait);
let span = gcx.hir.span(impl_node_id);
let param_env = gcx.param_env(impl_did);
- assert!(!source.has_escaping_regions());
+ assert!(!source.has_escaping_bound_vars());
let err_info = CoerceUnsizedInfo { custom_kind: None };
projects / rust.git / commitdiff