pub type ProvidedValue<'tcx> = Constness;
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> {
    Const,
    NotConst,
}

Variants§

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Const

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NotConst

Trait Implementations§

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impl EraseType for Constness

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type Result = [u8; 1]

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impl<'tcx> Lift<'tcx> for Constness

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type Lifted = Constness

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fn lift_to_tcx(self, _: TyCtxt<'tcx>) -> Option<Self>

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impl ParameterizedOverTcx for Constness

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type Value<'tcx> = Constness

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:1 byte

Size for each variant:

  • Const: 0 bytes
  • NotConst: 0 bytes