Rename HAS_PROJECTIONS to HAS_ALIASES etc.
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@ -460,7 +460,7 @@ fn can_contain_user_lifetime_bounds<T>(t: T) -> bool
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where
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T: TypeVisitable<TyCtxt<'tcx>>,
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{
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t.has_free_regions() || t.has_projections() || t.has_infer_types()
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t.has_free_regions() || t.has_aliases() || t.has_infer_types()
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}
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pub fn node_ty(&self, id: hir::HirId) -> Ty<'tcx> {
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@ -49,7 +49,7 @@ pub fn normalize_erasing_regions<T>(self, param_env: ty::ParamEnv<'tcx>, value:
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let value = self.erase_regions(value);
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debug!(?value);
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if !value.has_projections() {
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if !value.has_aliases() {
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value
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} else {
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value.fold_with(&mut NormalizeAfterErasingRegionsFolder { tcx: self, param_env })
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@ -81,7 +81,7 @@ pub fn try_normalize_erasing_regions<T>(
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let value = self.erase_regions(value);
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debug!(?value);
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if !value.has_projections() {
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if !value.has_aliases() {
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Ok(value)
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} else {
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let mut folder = TryNormalizeAfterErasingRegionsFolder::new(self, param_env);
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@ -1077,7 +1077,7 @@ fn try_instance_mir<'tcx>(
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let fields = def.all_fields();
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for field in fields {
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let field_ty = field.ty(tcx, args);
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if field_ty.has_param() && field_ty.has_projections() {
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if field_ty.has_param() && field_ty.has_aliases() {
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return Err("cannot build drop shim for polymorphic type");
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}
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}
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@ -177,7 +177,7 @@ fn try_fold_binder<T: TypeFoldable<TyCtxt<'tcx>>>(
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fn try_fold_ty(&mut self, ty: Ty<'tcx>) -> Result<Ty<'tcx>, Self::Error> {
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let infcx = self.at.infcx;
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debug_assert_eq!(ty, infcx.shallow_resolve(ty));
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if !ty.has_projections() {
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if !ty.has_aliases() {
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return Ok(ty);
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}
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@ -204,7 +204,7 @@ fn try_fold_ty(&mut self, ty: Ty<'tcx>) -> Result<Ty<'tcx>, Self::Error> {
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fn try_fold_const(&mut self, ct: ty::Const<'tcx>) -> Result<ty::Const<'tcx>, Self::Error> {
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let infcx = self.at.infcx;
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debug_assert_eq!(ct, infcx.shallow_resolve(ct));
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if !ct.has_projections() {
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if !ct.has_aliases() {
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return Ok(ct);
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}
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@ -311,7 +311,7 @@ fn process_obligation(
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let infcx = self.selcx.infcx;
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if obligation.predicate.has_projections() {
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if obligation.predicate.has_aliases() {
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let mut obligations = Vec::new();
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let predicate = normalize_with_depth_to(
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&mut self.selcx,
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@ -101,6 +101,8 @@ pub(super) fn needs_normalization<'tcx, T: TypeVisitable<TyCtxt<'tcx>>>(
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value: &T,
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reveal: Reveal,
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) -> bool {
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// This mirrors `ty::TypeFlags::HAS_ALIASES` except that we take `Reveal` into account.
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let mut flags = ty::TypeFlags::HAS_TY_PROJECTION
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| ty::TypeFlags::HAS_TY_WEAK
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| ty::TypeFlags::HAS_TY_INHERENT
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@ -432,7 +432,7 @@ pub(super) fn opt_normalize_projection_type<'a, 'b, 'tcx>(
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let projected_term = selcx.infcx.resolve_vars_if_possible(projected_term);
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let mut result = if projected_term.has_projections() {
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let mut result = if projected_term.has_aliases() {
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let normalized_ty = normalize_with_depth_to(
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selcx,
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param_env,
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@ -596,7 +596,7 @@ pub fn normalize_inherent_projection<'a, 'b, 'tcx>(
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let ty = tcx.type_of(alias_ty.def_id).instantiate(tcx, args);
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let mut ty = selcx.infcx.resolve_vars_if_possible(ty);
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if ty.has_projections() {
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if ty.has_aliases() {
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ty = normalize_with_depth_to(selcx, param_env, cause.clone(), depth + 1, ty, obligations);
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}
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@ -15,7 +15,7 @@ impl<'tcx, T> super::QueryTypeOp<'tcx> for Normalize<T>
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type QueryResponse = T;
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fn try_fast_path(_tcx: TyCtxt<'tcx>, key: &ParamEnvAnd<'tcx, Self>) -> Option<T> {
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if !key.value.value.has_projections() { Some(key.value.value) } else { None }
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if !key.value.value.has_aliases() { Some(key.value.value) } else { None }
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}
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fn perform_query(
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@ -1066,7 +1066,7 @@ fn evaluate_trait_predicate_recursively<'o>(
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// so we will try to normalize the obligation and evaluate again.
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// we will replace it with new solver in the future.
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if EvaluationResult::EvaluatedToErr == result
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&& fresh_trait_pred.has_projections()
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&& fresh_trait_pred.has_aliases()
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&& fresh_trait_pred.is_global()
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{
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let mut nested_obligations = Vec::new();
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@ -239,9 +239,9 @@ fn layout_of_uncached<'tcx>(
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// Arrays and slices.
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ty::Array(element, mut count) => {
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if count.has_projections() {
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if count.has_aliases() {
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count = tcx.normalize_erasing_regions(param_env, count);
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if count.has_projections() {
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if count.has_aliases() {
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return Err(error(cx, LayoutError::Unknown(ty)));
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}
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}
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@ -78,8 +78,10 @@ pub struct TypeFlags: u32 {
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/// Does this have `ConstKind::Unevaluated`?
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const HAS_CT_PROJECTION = 1 << 14;
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/// Could this type be normalized further?
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const HAS_PROJECTION = TypeFlags::HAS_TY_PROJECTION.bits()
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/// Does this have `Alias` or `ConstKind::Unevaluated`?
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///
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/// Rephrased, could this term be normalized further?
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const HAS_ALIASES = TypeFlags::HAS_TY_PROJECTION.bits()
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| TypeFlags::HAS_TY_WEAK.bits()
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| TypeFlags::HAS_TY_OPAQUE.bits()
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| TypeFlags::HAS_TY_INHERENT.bits()
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@ -223,8 +223,8 @@ fn has_escaping_bound_vars(&self) -> bool {
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self.has_vars_bound_at_or_above(ty::INNERMOST)
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}
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fn has_projections(&self) -> bool {
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self.has_type_flags(TypeFlags::HAS_PROJECTION)
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fn has_aliases(&self) -> bool {
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self.has_type_flags(TypeFlags::HAS_ALIASES)
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}
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fn has_inherent_projections(&self) -> bool {
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