Struct rustc::ty::maps::queries::const_eval

pub struct const_eval<'tcx> { /* fields omitted */ }

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

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Methods

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

pub fn ensure(
    tcx: TyCtxt<'a, 'tcx, 'lcx>,
    key: ParamEnvAnd<'tcx, (DefId, &'tcx Substs<'tcx>)>
)

🔬 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?

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.

pub fn try_get(
    tcx: TyCtxt<'a, 'tcx, 'lcx>,
    span: Span,
    key: ParamEnvAnd<'tcx, (DefId, &'tcx Substs<'tcx>)>
) -> Result<EvalResult<'tcx>, DiagnosticBuilder<'a>>

🔬 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?

Trait Implementations

impl<'tcx> QueryConfig for const_eval<'tcx>

type Key = ParamEnvAnd<'tcx, (DefId, &'tcx Substs<'tcx>)>

🔬 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?

type Value = EvalResult<'tcx>

🔬 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?