Struct rustc_trait_selection::solve::search_graph::StackEntry

source ·

struct StackEntry<'tcx> {
    input: CanonicalInput<'tcx>,
    available_depth: Limit,
    reached_depth: StackDepth,
    non_root_cycle_participant: Option<StackDepth>,
    encountered_overflow: bool,
    has_been_used: HasBeenUsed,
    provisional_result: Option<QueryResult<'tcx>>,
}

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§input: CanonicalInput<'tcx>§available_depth: Limit§reached_depth: StackDepth

The maximum depth reached by this stack entry, only up-to date for the top of the stack and lazily updated for the rest.

§non_root_cycle_participant: Option<StackDepth>

Whether this entry is a non-root cycle participant.

We must not move the result of non-root cycle participants to the global cache. See SearchGraph::cycle_participants for more details. We store the highest stack depth of a head of a cycle this goal is involved in. This necessary to soundly cache its provisional result.

§encountered_overflow: bool§has_been_used: HasBeenUsed§provisional_result: Option<QueryResult<'tcx>>

Starts out as None and gets set when rerunning this goal in case we encounter a cycle.

Struct rustc_trait_selection::solve::search_graph::StackEntry

Fields§

Trait Implementations§

impl<'tcx> Debug for StackEntry<'tcx>

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

Auto Trait Implementations§

impl<'tcx> !RefUnwindSafe for StackEntry<'tcx>

impl<'tcx> Send for StackEntry<'tcx>

impl<'tcx> Sync for StackEntry<'tcx>

impl<'tcx> Unpin for StackEntry<'tcx>

impl<'tcx> !UnwindSafe for StackEntry<'tcx>

Blanket Implementations§

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Layout§

impl<T> Any for T
where T: 'static + ?Sized,

impl<T> Borrow<T> for T
where T: ?Sized,

impl<T> BorrowMut<T> for T
where T: ?Sized,

impl<T, U> Into<U> for T
where U: From<T>,

impl<T, U> TryFrom<U> for T
where U: Into<T>,

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,