Struct QueryStackDeferred

pub struct QueryStackDeferred<'tcx> {
    _dummy: PhantomData<&'tcx ()>,
    extract: Arc<dyn Fn() -> QueryStackFrameExtra + DynSync + DynSend>,
}

Track a ‘side effect’ for a particular query. This is used to hold a closure which can create QueryStackFrameExtra.

Fields

_dummy: PhantomData<&'tcx ()>

extract: Arc<dyn Fn() -> QueryStackFrameExtra + DynSync + DynSend>

Implementations

impl<'tcx> QueryStackDeferred<'tcx>

pub fn new<C: Copy + DynSync + DynSend + 'tcx>( context: C, extract: fn(C) -> QueryStackFrameExtra, ) -> Self

pub fn extract(&self) -> QueryStackFrameExtra

Trait Implementations

impl<'tcx> Clone for QueryStackDeferred<'tcx>

fn clone(&self) -> QueryStackDeferred<'tcx>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'tcx> Debug for QueryStackDeferred<'tcx>

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

Formats the value using the given formatter.

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: 16 bytes