Struct rustc::ty::Slice

pub struct Slice<T>(_);

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A wrapper for slices with the additional invariant that the slice is interned and no other slice with the same contents can exist in the same context. This means we can use pointer + length for both equality comparisons and hashing.

Methods

impl<'tcx> Slice<ExistentialPredicate<'tcx>>

pub fn principal(&self) -> Option<ExistentialTraitRef<'tcx>>

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pub fn projection_bounds<'a>(
    &'a self
) -> impl Iterator<Item = ExistentialProjection<'tcx>> + 'a

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pub fn auto_traits<'a>(&'a self) -> impl Iterator<Item = DefId> + 'a

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impl<T> Slice<T>

pub fn empty<'a>() -> &'a Slice<T>

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Trait Implementations

impl<'gcx, T> HashStable<StableHashingContext<'gcx>> for &'gcx Slice<T> where
    T: HashStable<StableHashingContext<'gcx>>, 

fn hash_stable<W: StableHasherResult>(
    &self,
    hcx: &mut StableHashingContext<'gcx>,
    hasher: &mut StableHasher<W>
)

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impl<'tcx> Relate<'tcx> for &'tcx Slice<ExistentialPredicate<'tcx>>

fn relate<'a, 'gcx, R>(
    relation: &mut R,
    a: &Self,
    b: &Self
) -> RelateResult<'tcx, Self> where
    R: TypeRelation<'a, 'gcx, 'tcx>,
    'gcx: 'a + 'tcx,
    'tcx: 'a, 

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impl<'a, 'tcx> Lift<'tcx> for &'a Slice<Ty<'a>>

type Lifted = &'tcx Slice<Ty<'tcx>>

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fn lift_to_tcx<'b, 'gcx>(
    &self,
    tcx: TyCtxt<'b, 'gcx, 'tcx>
) -> Option<&'tcx Slice<Ty<'tcx>>>

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impl<'a, 'tcx> Lift<'tcx> for &'a Slice<ExistentialPredicate<'a>>

type Lifted = &'tcx Slice<ExistentialPredicate<'tcx>>

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fn lift_to_tcx<'b, 'gcx>(
    &self,
    tcx: TyCtxt<'b, 'gcx, 'tcx>
) -> Option<&'tcx Slice<ExistentialPredicate<'tcx>>>

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impl<'a, 'tcx> Lift<'tcx> for &'a Slice<Predicate<'a>>

type Lifted = &'tcx Slice<Predicate<'tcx>>

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fn lift_to_tcx<'b, 'gcx>(
    &self,
    tcx: TyCtxt<'b, 'gcx, 'tcx>
) -> Option<&'tcx Slice<Predicate<'tcx>>>

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impl<'tcx> TypeFoldable<'tcx> for &'tcx Slice<ExistentialPredicate<'tcx>>

fn super_fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(
    &self,
    folder: &mut F
) -> Self

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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

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fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool

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fn has_regions_escaping_depth(&self, depth: u32) -> bool

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fn has_escaping_regions(&self) -> bool

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fn has_type_flags(&self, flags: TypeFlags) -> bool

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fn has_projections(&self) -> bool

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fn references_error(&self) -> bool

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fn has_param_types(&self) -> bool

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fn has_self_ty(&self) -> bool

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fn has_infer_types(&self) -> bool

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fn needs_infer(&self) -> bool

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fn needs_subst(&self) -> bool

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fn has_re_skol(&self) -> bool

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fn has_closure_types(&self) -> bool

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fn has_erasable_regions(&self) -> bool

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fn is_normalized_for_trans(&self) -> bool

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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. Errs on the side of returning false.

impl<'tcx> TypeFoldable<'tcx> for &'tcx Slice<Ty<'tcx>>

fn super_fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(
    &self,
    folder: &mut F
) -> Self

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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

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fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool

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fn has_regions_escaping_depth(&self, depth: u32) -> bool

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fn has_escaping_regions(&self) -> bool

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fn has_type_flags(&self, flags: TypeFlags) -> bool

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fn has_projections(&self) -> bool

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fn references_error(&self) -> bool

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fn has_param_types(&self) -> bool

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fn has_self_ty(&self) -> bool

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fn has_infer_types(&self) -> bool

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fn needs_infer(&self) -> bool

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fn needs_subst(&self) -> bool

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fn has_re_skol(&self) -> bool

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fn has_closure_types(&self) -> bool

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fn has_erasable_regions(&self) -> bool

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fn is_normalized_for_trans(&self) -> bool

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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. Errs on the side of returning false.

impl<'tcx> TypeFoldable<'tcx> for &'tcx Slice<Predicate<'tcx>>

fn super_fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(
    &self,
    folder: &mut F
) -> Self

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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

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fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool

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fn has_regions_escaping_depth(&self, depth: u32) -> bool

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fn has_escaping_regions(&self) -> bool

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fn has_type_flags(&self, flags: TypeFlags) -> bool

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fn has_projections(&self) -> bool

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fn references_error(&self) -> bool

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fn has_param_types(&self) -> bool

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fn has_self_ty(&self) -> bool

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fn has_infer_types(&self) -> bool

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fn needs_infer(&self) -> bool

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fn needs_subst(&self) -> bool

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fn has_re_skol(&self) -> bool

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fn has_closure_types(&self) -> bool

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fn has_erasable_regions(&self) -> bool

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fn is_normalized_for_trans(&self) -> bool

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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. Errs on the side of returning false.

impl<'tcx> UseSpecializedDecodable for &'tcx Slice<ExistentialPredicate<'tcx>>

fn default_decode<D>(&mut D) -> Result<Self, <D as Decoder>::Error> where
    D: Decoder, 

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Defaults to returning an error (see SpecializationError).

impl<T: Debug> Debug for Slice<T>

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<T: Encodable> Encodable for Slice<T>

fn encode<__ST: Encoder>(&self, __arg_0: &mut __ST) -> Result<(), __ST::Error>

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impl<T> PartialEq for Slice<T>

fn eq(&self, other: &Slice<T>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<T> Eq for Slice<T>

impl<T> Hash for Slice<T>

fn hash<H: Hasher>(&self, s: &mut H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl<'a, T> IntoIterator for &'a Slice<T>

type Item = &'a T

The type of the elements being iterated over.

type IntoIter = <&'a [T] as IntoIterator>::IntoIter

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl<'tcx> UseSpecializedDecodable for &'tcx Slice<Ty<'tcx>>

fn default_decode<D>(&mut D) -> Result<Self, <D as Decoder>::Error> where
    D: Decoder, 

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Defaults to returning an error (see SpecializationError).

impl<'tcx> Print for &'tcx Slice<ExistentialPredicate<'tcx>>

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

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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

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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

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impl<'tcx> Display for &'tcx Slice<ExistentialPredicate<'tcx>>

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.