Enum rustc_middle::ty::VariantDiscr

pub enum VariantDiscr {
    Explicit(DefId),
    Relative(u32),
}

Variants

Explicit(DefId)

Explicit value for this variant, i.e., X = 123. The DefId corresponds to the embedded constant.

Relative(u32)

The previous variant’s discriminant plus one. For efficiency reasons, the distance from the last Explicit discriminant is being stored, or 0 for the first variant, if it has none.

Trait Implementations

impl Clone for VariantDiscr

fn clone(&self) -> VariantDiscr

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for VariantDiscr

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

Formats the value using the given formatter.

impl<'tcx, __D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<__D> for VariantDiscr

fn decode(__decoder: &mut __D) -> Self

impl<'tcx, __E: TyEncoder<I = TyCtxt<'tcx>>> Encodable<__E> for VariantDiscr

fn encode(&self, __encoder: &mut __E)

impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for VariantDiscr

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

impl PartialEq<VariantDiscr> for VariantDiscr

fn eq(&self, other: &VariantDiscr) -> 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 Copy for VariantDiscr

impl Eq for VariantDiscr

impl StructuralEq for VariantDiscr

impl StructuralPartialEq for VariantDiscr

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: 8 bytes

Size for each variant:

• Explicit: 8 bytes
• Relative: 8 bytes