Enum rustc_attr::builtin::StableSince

pub enum StableSince {
    Version(RustcVersion),
    Current,
    Err,
}

Rust release in which a feature is stabilized.

Variants

Version(RustcVersion)

Current

Stabilized in the upcoming version, whatever number that is.

Err

Failed to parse a stabilization version.

Trait Implementations

impl Clone for StableSince

fn clone(&self) -> StableSince

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for StableSince

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

Formats the value using the given formatter.

impl<__D: SpanDecoder> Decodable<__D> for StableSince

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

impl<__E: SpanEncoder> Encodable<__E> for StableSince

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

impl Hash for StableSince

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<__CTX> HashStable<__CTX> for StableSince

where __CTX: HashStableContext,

fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

impl PartialEq for StableSince

fn eq(&self, other: &StableSince) -> bool

Tests for self and other values to be equal, and is used by ==.

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

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

impl Copy for StableSince

impl Eq for StableSince

impl StructuralPartialEq for StableSince

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:

• Version: 6 bytes
• Current: 0 bytes
• Err: 0 bytes