Enum rustc_ast::ast::CoroutineKind

pub enum CoroutineKind {
    Async {
        span: Span,
        closure_id: NodeId,
        return_impl_trait_id: NodeId,
    },
    Gen {
        span: Span,
        closure_id: NodeId,
        return_impl_trait_id: NodeId,
    },
    AsyncGen {
        span: Span,
        closure_id: NodeId,
        return_impl_trait_id: NodeId,
    },
}

Describes what kind of coroutine markers, if any, a function has.

Coroutine markers are things that cause the function to generate a coroutine, such as async, which makes the function return impl Future, or gen, which makes the function return impl Iterator.

Variants

Async

Fields

span: Span

closure_id: NodeId

return_impl_trait_id: NodeId

async, which returns an impl Future

Gen

Fields

span: Span

closure_id: NodeId

return_impl_trait_id: NodeId

gen, which returns an impl Iterator

AsyncGen

Fields

span: Span

closure_id: NodeId

return_impl_trait_id: NodeId

async gen, which returns an impl AsyncIterator

Implementations

impl CoroutineKind

pub fn is_async(self) -> bool

pub fn is_gen(self) -> bool

pub fn closure_id(self) -> NodeId

pub fn return_id(self) -> (NodeId, Span)

In this case this is an async or gen return, the NodeId for the generated impl Trait item.

Trait Implementations

impl Clone for CoroutineKind

fn clone(&self) -> CoroutineKind

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CoroutineKind

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

Formats the value using the given formatter.

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

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

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

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

impl Copy for CoroutineKind

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: 20 bytes

Size for each variant:

• Async: 16 bytes
• Gen: 16 bytes
• AsyncGen: 16 bytes