Struct rustc::ty::maps::queries::maybe_unused_extern_crates

pub struct maybe_unused_extern_crates<'tcx> {
    data: PhantomData<&'tcx ()>,
}

🔬 This is a nightly-only experimental API. (rustc_private)

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Fields

data: PhantomData<&'tcx ()>

🔬 This is a nightly-only experimental API. (rustc_private)

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Methods

impl<'a, 'tcx, 'lcx> maybe_unused_extern_crates<'tcx>

pub fn ensure(tcx: TyCtxt<'a, 'tcx, 'lcx>, key: CrateNum)

🔬 This is a nightly-only experimental API. (rustc_private)

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Ensure that either this query has all green inputs or been executed. Executing query::ensure(D) is considered a read of the dep-node D.

This function is particularly useful when executing passes for their side-effects -- e.g., in order to report errors for erroneous programs.

Note: The optimization is only available during incr. comp.

Trait Implementations

impl<'tcx> QueryDescription<'tcx> for maybe_unused_extern_crates<'tcx>

fn describe(_tcx: TyCtxt, _: CrateNum) -> String

🔬 This is a nightly-only experimental API. (rustc_private)

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fn cache_on_disk(_: Self::Key) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

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fn try_load_from_disk(     _: TyCtxt<'_, 'tcx, 'tcx>,     _: SerializedDepNodeIndex ) -> Option<Self::Value>

🔬 This is a nightly-only experimental API. (rustc_private)

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impl<'tcx> QueryConfig<'tcx> for maybe_unused_extern_crates<'tcx>

type Key = CrateNum

🔬 This is a nightly-only experimental API. (rustc_private)

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type Value = Lrc<Vec<(DefId, Span)>>

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const NAME: &'static str

🔬 This is a nightly-only experimental API. (rustc_private)

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NAME: &'static str = "maybe_unused_extern_crates"

fn query(key: Self::Key) -> Query<'tcx>

🔬 This is a nightly-only experimental API. (rustc_private)

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fn query_map<'a>(tcx: TyCtxt<'a, 'tcx, '_>) -> &'a Lock<QueryMap<'tcx, Self>>

🔬 This is a nightly-only experimental API. (rustc_private)

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fn to_dep_node(tcx: TyCtxt<'_, 'tcx, '_>, key: &Self::Key) -> DepNode

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fn compute(tcx: TyCtxt<'_, 'tcx, '_>, key: Self::Key) -> Self::Value

🔬 This is a nightly-only experimental API. (rustc_private)

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fn handle_cycle_error(tcx: TyCtxt<'_, 'tcx, '_>) -> Self::Value

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?