Enum rustc::ty::VariantDiscr

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

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

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Variants

Explicit(DefId)

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

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

Relative(usize)

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

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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<'tcx> HashStable<StableHashingContext<'tcx>> for VariantDiscr

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

🔬 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 Copy for VariantDiscr

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, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl PartialEq for VariantDiscr

fn eq(&self, __arg_0: &VariantDiscr) -> bool

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

fn ne(&self, __arg_0: &VariantDiscr) -> bool

This method tests for !=.

impl Eq for VariantDiscr

impl Encodable for VariantDiscr

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

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

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impl Decodable for VariantDiscr

fn decode<__D: Decoder>(__arg_0: &mut __D) -> Result<VariantDiscr, __D::Error>

🔬 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?