[−][src]Struct rustc::ty::ExistentialTraitRef
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)
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An existential reference to a trait, where Self
is erased.
For example, the trait object Trait<'a, 'b, X, Y>
is:
exists T. T: Trait<'a, 'b, X, Y>
The substitutions don't include the erased Self
, only trait
type and lifetime parameters ([X, Y]
and ['a, 'b]
above).
Fields
def_id: DefId
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substs: &'tcx Substs<'tcx>
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Methods
impl<'a, 'gcx, 'tcx> ExistentialTraitRef<'tcx>
[src]
impl<'a, 'gcx, 'tcx> ExistentialTraitRef<'tcx>
pub fn input_types<'b>(
&'b self
) -> impl DoubleEndedIterator<Item = Ty<'tcx>> + 'b
[src]
pub fn input_types<'b>(
&'b self
) -> impl DoubleEndedIterator<Item = Ty<'tcx>> + 'b
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pub fn erase_self_ty(
tcx: TyCtxt<'a, 'gcx, 'tcx>,
trait_ref: TraitRef<'tcx>
) -> ExistentialTraitRef<'tcx>
[src]
pub fn erase_self_ty(
tcx: TyCtxt<'a, 'gcx, 'tcx>,
trait_ref: TraitRef<'tcx>
) -> ExistentialTraitRef<'tcx>
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pub fn with_self_ty(
&self,
tcx: TyCtxt<'a, 'gcx, 'tcx>,
self_ty: Ty<'tcx>
) -> TraitRef<'tcx>
[src]
pub fn with_self_ty(
&self,
tcx: TyCtxt<'a, 'gcx, 'tcx>,
self_ty: Ty<'tcx>
) -> TraitRef<'tcx>
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instead?
Object types don't have a self-type specified. Therefore, when
we convert the principal trait-ref into a normal trait-ref,
you must give some self-type. A common choice is mk_err()
or some skolemized type.
Trait Implementations
impl<'a, 'tcx> HashStable<StableHashingContext<'a>> for ExistentialTraitRef<'tcx>
[src]
impl<'a, 'tcx> HashStable<StableHashingContext<'a>> for ExistentialTraitRef<'tcx>
fn hash_stable<W: StableHasherResult>(
&self,
__ctx: &mut StableHashingContext<'a>,
__hasher: &mut StableHasher<W>
)
[src]
fn hash_stable<W: StableHasherResult>(
&self,
__ctx: &mut StableHashingContext<'a>,
__hasher: &mut StableHasher<W>
)
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impl<'tcx> Relate<'tcx> for ExistentialTraitRef<'tcx>
[src]
impl<'tcx> Relate<'tcx> for ExistentialTraitRef<'tcx>
fn relate<'a, 'gcx, R>(
relation: &mut R,
a: &ExistentialTraitRef<'tcx>,
b: &ExistentialTraitRef<'tcx>
) -> RelateResult<'tcx, ExistentialTraitRef<'tcx>> where
R: TypeRelation<'a, 'gcx, 'tcx>,
'gcx: 'a + 'tcx,
'tcx: 'a,
[src]
fn relate<'a, 'gcx, R>(
relation: &mut R,
a: &ExistentialTraitRef<'tcx>,
b: &ExistentialTraitRef<'tcx>
) -> RelateResult<'tcx, ExistentialTraitRef<'tcx>> where
R: TypeRelation<'a, 'gcx, 'tcx>,
'gcx: 'a + 'tcx,
'tcx: 'a,
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impl<'a, 'tcx> Lift<'tcx> for ExistentialTraitRef<'a>
[src]
impl<'a, 'tcx> Lift<'tcx> for ExistentialTraitRef<'a>
type Lifted = ExistentialTraitRef<'tcx>
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fn lift_to_tcx<'b, 'gcx>(
&self,
tcx: TyCtxt<'b, 'gcx, 'tcx>
) -> Option<Self::Lifted>
[src]
fn lift_to_tcx<'b, 'gcx>(
&self,
tcx: TyCtxt<'b, 'gcx, 'tcx>
) -> Option<Self::Lifted>
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impl<'tcx> TypeFoldable<'tcx> for ExistentialTraitRef<'tcx>
[src]
impl<'tcx> TypeFoldable<'tcx> for ExistentialTraitRef<'tcx>
fn super_fold_with<'gcx: 'tcx, V: TypeFolder<'gcx, 'tcx>>(
&self,
folder: &mut V
) -> Self
[src]
fn super_fold_with<'gcx: 'tcx, V: TypeFolder<'gcx, 'tcx>>(
&self,
folder: &mut V
) -> Self
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fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool
[src]
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool
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fn fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(
&self,
folder: &mut F
) -> Self
[src]
fn fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(
&self,
folder: &mut F
) -> Self
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fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool
[src]
fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool
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fn has_regions_bound_at_or_above(&self, binder: DebruijnIndex) -> bool
[src]
fn has_regions_bound_at_or_above(&self, binder: DebruijnIndex) -> bool
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True if self
has any late-bound regions that are either 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. Read more
fn has_regions_bound_above(&self, binder: DebruijnIndex) -> bool
[src]
fn has_regions_bound_above(&self, binder: DebruijnIndex) -> bool
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True if this self
has any regions that escape binder
(and hence are not bound by it). Read more
fn has_escaping_regions(&self) -> bool
[src]
fn has_escaping_regions(&self) -> bool
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fn has_type_flags(&self, flags: TypeFlags) -> bool
[src]
fn has_type_flags(&self, flags: TypeFlags) -> bool
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fn has_projections(&self) -> bool
[src]
fn has_projections(&self) -> bool
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fn references_error(&self) -> bool
[src]
fn references_error(&self) -> bool
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fn has_param_types(&self) -> bool
[src]
fn has_param_types(&self) -> bool
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fn has_self_ty(&self) -> bool
[src]
fn has_self_ty(&self) -> bool
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fn has_infer_types(&self) -> bool
[src]
fn has_infer_types(&self) -> bool
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fn needs_infer(&self) -> bool
[src]
fn needs_infer(&self) -> bool
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fn has_skol(&self) -> bool
[src]
fn has_skol(&self) -> bool
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fn needs_subst(&self) -> bool
[src]
fn needs_subst(&self) -> bool
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fn has_re_skol(&self) -> bool
[src]
fn has_re_skol(&self) -> bool
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fn has_closure_types(&self) -> bool
[src]
fn has_closure_types(&self) -> bool
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fn has_free_regions(&self) -> bool
[src]
fn has_free_regions(&self) -> bool
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"Free" regions in this context means that it has any region that is not (a) erased or (b) late-bound. Read more
fn has_erasable_regions(&self) -> bool
[src]
fn has_erasable_regions(&self) -> bool
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True if there any any un-erased free regions.
fn is_global(&self) -> bool
[src]
fn is_global(&self) -> bool
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Indicates whether this value references only 'global' types/lifetimes that are the same regardless of what fn we are in. This is used for caching. Read more
fn has_late_bound_regions(&self) -> bool
[src]
fn has_late_bound_regions(&self) -> bool
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True if there are any late-bound regions
fn visit_tys_shallow(
&self,
visit: impl FnMut(Ty<'tcx>) -> bool
) -> bool
[src]
fn visit_tys_shallow(
&self,
visit: impl FnMut(Ty<'tcx>) -> bool
) -> bool
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A visitor that does not recurse into types, works like fn walk_shallow
in Ty
.
impl<'tcx> Copy for ExistentialTraitRef<'tcx>
[src]
impl<'tcx> Copy for ExistentialTraitRef<'tcx>
impl<'tcx> Clone for ExistentialTraitRef<'tcx>
[src]
impl<'tcx> Clone for ExistentialTraitRef<'tcx>
fn clone(&self) -> ExistentialTraitRef<'tcx>
[src]
fn clone(&self) -> ExistentialTraitRef<'tcx>
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
impl<'tcx> PartialEq for ExistentialTraitRef<'tcx>
[src]
impl<'tcx> PartialEq for ExistentialTraitRef<'tcx>
fn eq(&self, other: &ExistentialTraitRef<'tcx>) -> bool
[src]
fn eq(&self, other: &ExistentialTraitRef<'tcx>) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &ExistentialTraitRef<'tcx>) -> bool
[src]
fn ne(&self, other: &ExistentialTraitRef<'tcx>) -> bool
This method tests for !=
.
impl<'tcx> Eq for ExistentialTraitRef<'tcx>
[src]
impl<'tcx> Eq for ExistentialTraitRef<'tcx>
fn assert_receiver_is_total_eq(&self)
[src]
fn assert_receiver_is_total_eq(&self)
impl<'tcx> PartialOrd for ExistentialTraitRef<'tcx>
[src]
impl<'tcx> PartialOrd for ExistentialTraitRef<'tcx>
fn partial_cmp(&self, other: &ExistentialTraitRef<'tcx>) -> Option<Ordering>
[src]
fn partial_cmp(&self, other: &ExistentialTraitRef<'tcx>) -> Option<Ordering>
This method returns an ordering between self
and other
values if one exists. Read more
fn lt(&self, other: &ExistentialTraitRef<'tcx>) -> bool
[src]
fn lt(&self, other: &ExistentialTraitRef<'tcx>) -> bool
This method tests less than (for self
and other
) and is used by the <
operator. Read more
fn le(&self, other: &ExistentialTraitRef<'tcx>) -> bool
[src]
fn le(&self, other: &ExistentialTraitRef<'tcx>) -> bool
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
fn gt(&self, other: &ExistentialTraitRef<'tcx>) -> bool
[src]
fn gt(&self, other: &ExistentialTraitRef<'tcx>) -> bool
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
fn ge(&self, other: &ExistentialTraitRef<'tcx>) -> bool
[src]
fn ge(&self, other: &ExistentialTraitRef<'tcx>) -> bool
This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more
impl<'tcx> Ord for ExistentialTraitRef<'tcx>
[src]
impl<'tcx> Ord for ExistentialTraitRef<'tcx>
fn cmp(&self, other: &ExistentialTraitRef<'tcx>) -> Ordering
[src]
fn cmp(&self, other: &ExistentialTraitRef<'tcx>) -> Ordering
This method returns an Ordering
between self
and other
. Read more
fn max(self, other: Self) -> Self
1.21.0[src]
fn max(self, other: Self) -> Self
Compares and returns the maximum of two values. Read more
fn min(self, other: Self) -> Self
1.21.0[src]
fn min(self, other: Self) -> Self
Compares and returns the minimum of two values. Read more
impl<'tcx> Hash for ExistentialTraitRef<'tcx>
[src]
impl<'tcx> Hash for ExistentialTraitRef<'tcx>
fn hash<__H: Hasher>(&self, state: &mut __H)
[src]
fn hash<__H: Hasher>(&self, state: &mut __H)
Feeds this value into the given [Hasher
]. Read more
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl<'tcx> Encodable for ExistentialTraitRef<'tcx>
[src]
impl<'tcx> Encodable for ExistentialTraitRef<'tcx>
fn encode<__S: Encoder>(&self, s: &mut __S) -> Result<(), __S::Error>
[src]
fn encode<__S: Encoder>(&self, s: &mut __S) -> Result<(), __S::Error>
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impl<'tcx> Decodable for ExistentialTraitRef<'tcx>
[src]
impl<'tcx> Decodable for ExistentialTraitRef<'tcx>
fn decode<__D: Decoder>(
d: &mut __D
) -> Result<ExistentialTraitRef<'tcx>, __D::Error>
[src]
fn decode<__D: Decoder>(
d: &mut __D
) -> Result<ExistentialTraitRef<'tcx>, __D::Error>
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impl<'tcx> Print for ExistentialTraitRef<'tcx>
[src]
impl<'tcx> Print for ExistentialTraitRef<'tcx>
fn print<F: Write>(&self, f: &mut F, cx: &mut PrintContext) -> Result
[src]
fn print<F: Write>(&self, f: &mut F, cx: &mut PrintContext) -> Result
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fn print_to_string(&self, cx: &mut PrintContext) -> String
[src]
fn print_to_string(&self, cx: &mut PrintContext) -> String
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fn print_display<F: Write>(&self, f: &mut F, cx: &mut PrintContext) -> Result
[src]
fn print_display<F: Write>(&self, f: &mut F, cx: &mut PrintContext) -> Result
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fn print_display_to_string(&self, cx: &mut PrintContext) -> String
[src]
fn print_display_to_string(&self, cx: &mut PrintContext) -> String
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fn print_debug<F: Write>(&self, f: &mut F, cx: &mut PrintContext) -> Result
[src]
fn print_debug<F: Write>(&self, f: &mut F, cx: &mut PrintContext) -> Result
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fn print_debug_to_string(&self, cx: &mut PrintContext) -> String
[src]
fn print_debug_to_string(&self, cx: &mut PrintContext) -> String
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impl<'tcx> Debug for ExistentialTraitRef<'tcx>
[src]
impl<'tcx> Debug for ExistentialTraitRef<'tcx>
Auto Trait Implementations
impl<'tcx> !Send for ExistentialTraitRef<'tcx>
impl<'tcx> !Send for ExistentialTraitRef<'tcx>
impl<'tcx> !Sync for ExistentialTraitRef<'tcx>
impl<'tcx> !Sync for ExistentialTraitRef<'tcx>
Blanket Implementations
impl<T> MaybeResult for T
[src]
impl<T> MaybeResult for T
fn from_ok(T) -> T
[src]
fn from_ok(T) -> T
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fn map_same<F>(Self, F) -> T where
F: FnOnce(T) -> T,
[src]
fn map_same<F>(Self, F) -> T where
F: FnOnce(T) -> T,
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impl<'tcx, T> Subst for T where
T: TypeFoldable<'tcx>,
[src]
impl<'tcx, T> Subst for T where
T: TypeFoldable<'tcx>,
fn subst_spanned(
&Self,
TyCtxt<'a, 'gcx, 'tcx>,
&[Kind<'tcx>],
Option<Span>
) -> T
[src]
fn subst_spanned(
&Self,
TyCtxt<'a, 'gcx, 'tcx>,
&[Kind<'tcx>],
Option<Span>
) -> T
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fn subst<'a, 'gcx>(
&self,
tcx: TyCtxt<'a, 'gcx, 'tcx>,
substs: &[Kind<'tcx>]
) -> Self
[src]
fn subst<'a, 'gcx>(
&self,
tcx: TyCtxt<'a, 'gcx, 'tcx>,
substs: &[Kind<'tcx>]
) -> Self
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instead?
impl<'a, T> Captures for T where
T: ?Sized,
[src]
impl<'a, T> Captures for T where
T: ?Sized,
impl<T> ToOwned for T where
T: Clone,
[src]
impl<T> ToOwned for T where
T: Clone,
type Owned = T
fn to_owned(&self) -> T
[src]
fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
fn clone_into(&self, target: &mut T)
[src]
fn clone_into(&self, target: &mut T)
🔬 This is a nightly-only experimental API. (toowned_clone_into
)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
impl<T> From for T
[src]
impl<T> From for T
impl<T, U> Into for T where
U: From<T>,
[src]
impl<T, U> Into for T where
U: From<T>,
impl<T, U> TryFrom for T where
T: From<U>,
[src]
impl<T, U> TryFrom for T where
T: From<U>,
type Error = !
try_from
)The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
try_from
)Performs the conversion.
impl<T> Borrow for T where
T: ?Sized,
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impl<T> Borrow for T where
T: ?Sized,
ⓘImportant traits for &'a mut Rfn borrow(&self) -> &T
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fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
impl<T, U> TryInto for T where
U: TryFrom<T>,
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impl<T, U> TryInto for T where
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
try_from
)The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
try_from
)Performs the conversion.
impl<T> BorrowMut for T where
T: ?Sized,
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impl<T> BorrowMut for T where
T: ?Sized,
ⓘImportant traits for &'a mut Rfn borrow_mut(&mut self) -> &mut T
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fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<T> Any for T where
T: 'static + ?Sized,
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impl<T> Any for T where
T: 'static + ?Sized,
fn get_type_id(&self) -> TypeId
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fn get_type_id(&self) -> TypeId
🔬 This is a nightly-only experimental API. (get_type_id
)
this method will likely be replaced by an associated static
Gets the TypeId
of self
. Read more
impl<T> Encodable for T where
T: UseSpecializedEncodable + ?Sized,
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impl<T> Encodable for T where
T: UseSpecializedEncodable + ?Sized,
fn encode<E>(&self, e: &mut E) -> Result<(), <E as Encoder>::Error> where
E: Encoder,
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fn encode<E>(&self, e: &mut E) -> Result<(), <E as Encoder>::Error> where
E: Encoder,
🔬 This is a nightly-only experimental API. (rustc_private
)
this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml
instead?
impl<T> Decodable for T where
T: UseSpecializedDecodable,
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impl<T> Decodable for T where
T: UseSpecializedDecodable,
fn decode<D>(d: &mut D) -> Result<T, <D as Decoder>::Error> where
D: Decoder,
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fn decode<D>(d: &mut D) -> Result<T, <D as Decoder>::Error> where
D: Decoder,
🔬 This is a nightly-only experimental API. (rustc_private
)
this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml
instead?
impl<E> SpecializationError for E
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impl<E> SpecializationError for E
fn not_found<S, T>(trait_name: &'static str, method_name: &'static str) -> E where
T: ?Sized,
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fn not_found<S, T>(trait_name: &'static str, method_name: &'static str) -> E where
T: ?Sized,
🔬 This is a nightly-only experimental API. (rustc_private
)
this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml
instead?
Create an error for a missing method specialization. Defaults to panicking with type, trait & method names. S
is the encoder/decoder state type, T
is the type being encoded/decoded, and the arguments are the names of the trait and method that should've been overridden. Read more
impl<T> Erased for T
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impl<T> Erased for T
impl<T> Send for T where
T: ?Sized,
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impl<T> Send for T where
T: ?Sized,
impl<T> Sync for T where
T: ?Sized,
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impl<T> Sync for T where
T: ?Sized,
impl<T> Erased for T
impl<T> Erased for T