Enum rustc_middle::ty::vtable::VtblEntry

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

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

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

Returns a copy of the value.

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

Performs copy-assignment from source.

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

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

Formats the value using the given formatter.

impl<'tcx> EraseType for VtblEntry<'tcx>

type Result = [u8; 32]

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

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 !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

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

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

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: 32 bytes

Size for each variant:

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