Enum rustc_hir::hir::OpaqueTyOrigin

pub enum OpaqueTyOrigin {
    FnReturn(LocalDefId),
    AsyncFn(LocalDefId),
    TyAlias,
}

From whence the opaque type came.

Variants

FnReturn(LocalDefId)

-> impl Trait

AsyncFn(LocalDefId)

async fn

TyAlias

type aliases: type Foo = impl Trait;

Trait Implementations

impl Clone for OpaqueTyOrigin

fn clone(&self) -> OpaqueTyOrigin

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for OpaqueTyOrigin

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

Formats the value using the given formatter.

impl<__D: Decoder> Decodable<__D> for OpaqueTyOrigin

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

impl<__E: Encoder> Encodable<__E> for OpaqueTyOrigin

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

impl<__CTX> HashStable<__CTX> for OpaqueTyOriginwhere
    __CTX: HashStableContext,

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

impl PartialEq<OpaqueTyOrigin> for OpaqueTyOrigin

fn eq(&self, other: &OpaqueTyOrigin) -> 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 OpaqueTyOrigin

impl Eq for OpaqueTyOrigin

impl StructuralEq for OpaqueTyOrigin

impl StructuralPartialEq for OpaqueTyOrigin

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:

• FnReturn: 4 bytes
• AsyncFn: 4 bytes
• TyAlias: 0 bytes