Enum syntax::ast::IsAsync

pub enum IsAsync {
    Async {
        closure_id: NodeId,
        return_impl_trait_id: NodeId,
        arguments: Vec<AsyncArgument>,
    },
    NotAsync,
}

Variants

Async

Fields of Async

closure_id: NodeIdreturn_impl_trait_id: NodeIdarguments: Vec<AsyncArgument>

This field stores the arguments and statements that are used in HIR lowering to ensure that async fn arguments are dropped at the correct time.

The argument and statements here are generated at parse time as they are required in both the hir lowering, def collection and name resolution and this stops them needing to be created in each place.

NotAsync

Methods

impl IsAsync

pub fn is_async(&self) -> bool

pub fn opt_return_id(&self) -> Option<NodeId>

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

Trait Implementations

impl Clone for IsAsync

fn clone(&self) -> IsAsync

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for IsAsync

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

Formats the value using the given formatter.

impl Encodable for IsAsync

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

impl Decodable for IsAsync

fn decode<__D: Decoder>(d: &mut __D) -> Result<IsAsync, __D::Error>