Enum rustc_middle::infer::unify_key::ConstVariableValue

pub enum ConstVariableValue<'tcx> {
    Known {
        value: &'tcx Const<'tcx>,
    },
    Unknown {
        universe: UniverseIndex,
    },
}

Variants

Known

Fields of Known

value: &'tcx Const<'tcx>

Unknown

Fields of Unknown

universe: UniverseIndex

Implementations

impl<'tcx> ConstVariableValue<'tcx>

pub fn known(&self) -> Option<&'tcx Const<'tcx>>

If this value is known, returns the const it is known to be. Otherwise, None.

Trait Implementations

impl<'tcx> Clone for ConstVariableValue<'tcx>

fn clone(&self) -> ConstVariableValue<'tcx>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'tcx> Debug for ConstVariableValue<'tcx>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'tcx> Copy for ConstVariableValue<'tcx>

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: 16 bytes

Size for each variant:

• Known: 12 bytes
• Unknown: 4 bytes