rustc_middle::query::queries::type_op_normalize_poly_fn_sig

Type Alias ProvidedValue

pub type ProvidedValue<'tcx> = Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, PolyFnSig<'tcx>>>, NoSolution>;

Expand description

This type alias specifies the type returned from query providers and the type used for decoding. For regular queries this is the declared returned type V, but arena_cache will use <V as ArenaCached>::Provided instead.

Aliased Type§

pub enum ProvidedValue<'tcx> {
    Ok(&'tcx Canonical<TyCtxt<'tcx>, QueryResponse<'tcx, Binder<TyCtxt<'tcx>, FnSig<TyCtxt<'tcx>>>>>),
    Err(NoSolution),
}

Variants§

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Ok(&'tcx Canonical<TyCtxt<'tcx>, QueryResponse<'tcx, Binder<TyCtxt<'tcx>, FnSig<TyCtxt<'tcx>>>>>)

Contains the success value

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Err(NoSolution)

Contains the error value

Layout§

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.

ProvidedValue