Struct rustc_borrowck::constraints::OutlivesConstraintSet

impl<'tcx> OutlivesConstraintSet<'tcx>

pub(crate) fn push(&mut self, constraint: OutlivesConstraint<'tcx>)

pub(crate) fn graph(&self, num_region_vars: usize) -> ConstraintGraph<Normal>

Constructs a “normal” graph from the constraint set; the graph makes it easy to find the constraints affecting a particular region.

N.B., this graph contains a “frozen” view of the current constraints. Any new constraints added to the OutlivesConstraintSet after the graph is built will not be present in the graph.

pub(crate) fn reverse_graph( &self, num_region_vars: usize ) -> ConstraintGraph<Reverse>

Like graph, but constraints a reverse graph where R1: R2 represents an edge R2 -> R1.

pub(crate) fn compute_sccs( &self, constraint_graph: &ConstraintGraph<Normal>, static_region: RegionVid ) -> Sccs<RegionVid, ConstraintSccIndex>

Computes cycles (SCCs) in the graph of regions. In particular, find all regions R1, R2 such that R1: R2 and R2: R1 and group them into an SCC, and find the relationships between SCCs.

pub(crate) fn outlives( &self ) -> &IndexSlice<OutlivesConstraintIndex, OutlivesConstraint<'tcx>>

Trait Implementations§

impl<'tcx> Clone for OutlivesConstraintSet<'tcx>

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

Returns a copy of the value. Read more

1.0.0 · source§

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

Performs copy-assignment from source. Read more

impl<'tcx> Debug for OutlivesConstraintSet<'tcx>

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

Formats the value using the given formatter. Read more

impl<'tcx> Default for OutlivesConstraintSet<'tcx>

fn default() -> OutlivesConstraintSet<'tcx>

Returns the “default value” for a type. Read more

impl<'tcx> Index<OutlivesConstraintIndex> for OutlivesConstraintSet<'tcx>

type Output = OutlivesConstraint<'tcx>

The returned type after indexing.

fn index(&self, i: OutlivesConstraintIndex) -> &Self::Output

Performs the indexing (container[index]) operation. Read more

Auto Trait Implementations§

impl<'tcx> !UnwindSafe for OutlivesConstraintSet<'tcx>

Blanket Implementations§

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