Struct rustc_borrowck::region_infer::RegionDefinition

pub(crate) struct RegionDefinition<'tcx> {
    pub(crate) origin: NllRegionVariableOrigin,
    pub(crate) universe: UniverseIndex,
    pub(crate) external_name: Option<Region<'tcx>>,
}

Fields

origin: NllRegionVariableOrigin

What kind of variable is this – a free region? existential variable? etc. (See the NllRegionVariableOrigin for more info.)

universe: UniverseIndex

Which universe is this region variable defined in? This is most often ty::UniverseIndex::ROOT, but when we encounter forall-quantifiers like for<'a> { 'a = 'b }, we would create the variable for 'a in a fresh universe that extends ROOT.

external_name: Option<Region<'tcx>>

If this is ’static or an early-bound region, then this is Some(X) where X is the name of the region.

Implementations

impl<'tcx> RegionDefinition<'tcx>

fn new(universe: UniverseIndex, rv_origin: RegionVariableOrigin) -> Self

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: 32 bytes