pub type ProvidedValue<'tcx> = Result<&'tcx List<Ty<'tcx>>, AlwaysRequiresDrop>;
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 Deref>::Target instead.

Aliased Type§

enum ProvidedValue<'tcx> {
    Ok(&'tcx RawList<(), Ty<'tcx>>),
    Err(AlwaysRequiresDrop),
}

Variants§

§1.0.0

Ok(&'tcx RawList<(), Ty<'tcx>>)

Contains the success value

§1.0.0

Err(AlwaysRequiresDrop)

Contains the error value

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: 8 bytes

Size for each variant:

  • Ok: 8 bytes
  • Err: 0 bytes