Enum rustc_middle::ty::vtable::VtblEntry

source · [−]

pub enum VtblEntry<'tcx> {
    MetadataDropInPlace,
    MetadataSize,
    MetadataAlign,
    Vacant,
    Method(Instance<'tcx>),
    TraitVPtr(PolyTraitRef<'tcx>),
}

Variants

`MetadataDropInPlace`

destructor of this type (used in vtable header)

`MetadataSize`

layout size of this type (used in vtable header)

`MetadataAlign`

layout align of this type (used in vtable header)

`Vacant`

non-dispatchable associated function that is excluded from trait object

`Method(Instance<'tcx>)`

dispatchable associated function

`TraitVPtr(PolyTraitRef<'tcx>)`

pointer to a separate supertrait vtable, can be used by trait upcasting coercion

Trait Implementations

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impl<'tcx> Clone for VtblEntry<'tcx>

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fn clone(&self) -> VtblEntry<'tcx>

Returns a copy of the value. Read more

1.0.0 · source

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl<'tcx> Debug for VtblEntry<'tcx>

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

Formats the value using the given formatter. Read more

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impl<'tcx, 'ctx> HashStable<StableHashingContext<'ctx>> for VtblEntry<'tcx>

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fn hash_stable(
 &self,
 hcx: &mut StableHashingContext<'ctx>,
 __hasher: &mut StableHasher
)

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impl<'tcx> PartialEq<VtblEntry<'tcx>> for VtblEntry<'tcx>

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fn eq(&self, other: &VtblEntry<'tcx>) -> bool

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

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fn ne(&self, other: &VtblEntry<'tcx>) -> bool

This method tests for !=.

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impl<'tcx> Copy for VtblEntry<'tcx>

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impl<'tcx> StructuralPartialEq for VtblEntry<'tcx>

Auto Trait Implementations

impl<'tcx> !RefUnwindSafe for VtblEntry<'tcx>

impl<'tcx> Send for VtblEntry<'tcx>

impl<'tcx> Sync for VtblEntry<'tcx>

impl<'tcx> Unpin for VtblEntry<'tcx>

impl<'tcx> !UnwindSafe for VtblEntry<'tcx>

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T where
T: Copy,

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fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut Self

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fn allocate_from_iter<'a>(
arena: &'a Arena<'tcx>,
iter: impl IntoIterator<Item = Self>
) -> &'a mut [Self]ⓘNotable traits for &'_ [u8 ]`impl<'_> Read for &'_ [u8]impl<'_> Write for &'_ mut [u8]`

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<Ctxt, T> DepNodeParams<Ctxt> for T where
Ctxt: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,

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pub default fn fingerprint_style() -> FingerprintStyle

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pub default fn to_fingerprint(&self, tcx: Ctxt) -> Fingerprint

This method turns the parameters of a DepNodeConstructor into an opaque Fingerprint to be used in DepNode. Not all DepNodeParams support being turned into a Fingerprint (they don’t need to if the corresponding DepNode is anonymous). Read more

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pub default fn to_debug_str(&self, Ctxt) -> String

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pub default fn recover(
Ctxt,
&DepNode<<Ctxt as DepContext>::DepKind>
) -> Option<T>

This method tries to recover the query key from the given DepNode, something which is needed when forcing DepNodes during red-green evaluation. The query system will only call this method if fingerprint_style() is not FingerprintStyle::Opaque. It is always valid to return None here, in which case incremental compilation will treat the query as having changed instead of forcing it. Read more

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impl<T> From<T> for T

const: unstable · source

pub fn from(t: T) -> T

Performs the conversion.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

pub fn into(self) -> U

Performs the conversion.

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impl<T> MaybeResult<T> for T

impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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pub fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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impl<'a, T> Captures<'a> for T where
T: ?Sized,

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 40 bytes

Size for each variant:

MetadataDropInPlace: 0 bytes
MetadataSize: 0 bytes
MetadataAlign: 0 bytes
Vacant: 0 bytes
Method: 32 bytes
TraitVPtr: 24 bytes

Enum rustc_middle::ty::vtable::VtblEntry

Variants

MetadataDropInPlace

MetadataSize

MetadataAlign

Vacant

Method(Instance<'tcx>)

TraitVPtr(PolyTraitRef<'tcx>)

Trait Implementations

impl<'tcx> Clone for VtblEntry<'tcx>

fn clone(&self) -> VtblEntry<'tcx>

fn clone_from(&mut self, source: &Self)

impl<'tcx> Debug for VtblEntry<'tcx>

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

impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for VtblEntry<'tcx>

fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher)

impl<'tcx> PartialEq<VtblEntry<'tcx>> for VtblEntry<'tcx>

fn eq(&self, other: &VtblEntry<'tcx>) -> bool

fn ne(&self, other: &VtblEntry<'tcx>) -> bool

impl<'tcx> Copy for VtblEntry<'tcx>

impl<'tcx> StructuralPartialEq for VtblEntry<'tcx>

Auto Trait Implementations

impl<'tcx> !RefUnwindSafe for VtblEntry<'tcx>

impl<'tcx> Send for VtblEntry<'tcx>

impl<'tcx> Sync for VtblEntry<'tcx>

impl<'tcx> Unpin for VtblEntry<'tcx>

impl<'tcx> !UnwindSafe for VtblEntry<'tcx>

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T where T: Copy,

fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut Self

fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = Self>) -> &'a mut [Self]ⓘNotable traits for &'_ [u8]impl<'_> Read for &'_ [u8]impl<'_> Write for &'_ mut [u8]

impl<T> Borrow<T> for T where T: ?Sized,

pub fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

pub fn borrow_mut(&mut self) -> &mut T

impl<Ctxt, T> DepNodeParams<Ctxt> for T where Ctxt: DepContext, T: for<'a> HashStable<StableHashingContext<'a>> + Debug,

pub default fn fingerprint_style() -> FingerprintStyle

pub default fn to_fingerprint(&self, tcx: Ctxt) -> Fingerprint

pub default fn to_debug_str(&self, Ctxt) -> String

pub default fn recover( Ctxt, &DepNode<<Ctxt as DepContext>::DepKind>) -> Option<T>

impl<T> From<T> for T

pub fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

pub fn into(self) -> U

impl<T> MaybeResult<T> for T

type Error = !

fn from(Ok: Result<T, Self::Error>) -> Self

fn to_result(self) -> Result<T, Self::Error>

impl<T> ToOwned for T where T: Clone,

type Owned = T

pub fn to_owned(&self) -> T

pub fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<'a, T> Captures<'a> for T where T: ?Sized,

Layout

`MetadataDropInPlace`

`MetadataSize`

`MetadataAlign`

`Vacant`

`Method(Instance<'tcx>)`

`TraitVPtr(PolyTraitRef<'tcx>)`

impl<'tcx, 'ctx> HashStable<StableHashingContext<'ctx>> for VtblEntry<'tcx>

fn hash_stable(
&self,
hcx: &mut StableHashingContext<'ctx>,
__hasher: &mut StableHasher
)

impl<T> Any for T where
T: 'static + ?Sized,

impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T where
T: Copy,

fn allocate_from_iter<'a>(
arena: &'a Arena<'tcx>,
iter: impl IntoIterator<Item = Self>
) -> &'a mut [Self]ⓘNotable traits for &'_ [u8 ]`impl<'_> Read for &'_ [u8]impl<'_> Write for &'_ mut [u8]`

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<Ctxt, T> DepNodeParams<Ctxt> for T where
Ctxt: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,

pub default fn recover(
Ctxt,
&DepNode<<Ctxt as DepContext>::DepKind>
) -> Option<T>

impl<T, U> Into<U> for T where
U: From<T>,

impl<T> ToOwned for T where
T: Clone,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

impl<'a, T> Captures<'a> for T where
T: ?Sized,