Enum rustc_hir::LocalSource

pub enum LocalSource {
    Normal,
    ForLoopDesugar,
    AsyncFn,
    AwaitDesugar,
    AssignDesugar(Span),
}

Hints at the original code for a let statement.

Variants

Normal

A match _ { .. }.

ForLoopDesugar

A desugared for _ in _ { .. } loop.

AsyncFn

When lowering async functions, we create locals within the async move so that all parameters are dropped after the future is polled.

async fn foo(<pattern> @ x: Type) {
    async move {
        let <pattern> = x;
    }
}

AwaitDesugar

A desugared <expr>.await.

AssignDesugar(Span)

A desugared expr = expr, where the LHS is a tuple, struct or array. The span is that of the = sign.

Tuple Fields of AssignDesugar

0: Span

Trait Implementations

impl Clone for LocalSource

fn clone(&self) -> LocalSource

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for LocalSource

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

Formats the value using the given formatter.

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

fn encode(&self, __encoder: &mut __E) -> Result<(), <__E as Encoder>::Error>

impl<__CTX> HashStable<__CTX> for LocalSource where
    __CTX: HashStableContext, 

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

impl Copy for LocalSource

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: 12 bytes

Size for each variant:

• Normal: 0 bytes
• ForLoopDesugar: 0 bytes
• AsyncFn: 0 bytes
• AwaitDesugar: 0 bytes
• AssignDesugar: 8 bytes