Struct rustc::infer::outlives::free_region_map::FreeRegionMap

pub struct FreeRegionMap<'tcx> { /* fields omitted */ }

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Methods

impl<'tcx> FreeRegionMap<'tcx>

pub fn new() -> Self

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pub fn is_empty(&self) -> bool

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pub fn relate_regions(&mut self, sub: Region<'tcx>, sup: Region<'tcx>)

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pub fn lub_free_regions<'a, 'gcx>(     &self,     tcx: TyCtxt<'a, 'gcx, 'tcx>,     r_a: Region<'tcx>,     r_b: Region<'tcx> ) -> Region<'tcx>

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Compute the least-upper-bound of two free regions. In some cases, this is more conservative than necessary, in order to avoid making arbitrary choices. See TransitiveRelation::postdom_upper_bound for more details.

Trait Implementations

impl<'tcx> Clone for FreeRegionMap<'tcx>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'tcx> Encodable for FreeRegionMap<'tcx>

fn encode<__S: Encoder>(&self, __arg_0: &mut __S) -> Result<(), __S::Error>

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impl<'tcx> Decodable for FreeRegionMap<'tcx>

fn decode<__D: Decoder>(     __arg_0: &mut __D ) -> Result<FreeRegionMap<'tcx>, __D::Error>

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impl<'tcx> Debug for FreeRegionMap<'tcx>

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<'tcx> FreeRegionRelations<'tcx> for FreeRegionMap<'tcx>

fn sub_free_regions(&self, r_a: Region<'tcx>, r_b: Region<'tcx>) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

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Tests whether r_a <= r_b. Both must be free regions or 'static.

impl<'a, 'tcx> HashStable<StableHashingContext<'a>> for FreeRegionMap<'tcx>

fn hash_stable<W: StableHasherResult>(     &self,     __ctx: &mut StableHashingContext<'a>,     __hasher: &mut StableHasher<W> )

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impl<'a, 'tcx> Lift<'tcx> for FreeRegionMap<'a>

type Lifted = FreeRegionMap<'tcx>

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fn lift_to_tcx<'b, 'gcx>(     &self,     tcx: TyCtxt<'b, 'gcx, 'tcx> ) -> Option<FreeRegionMap<'tcx>>

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?