Trait rustc_borrowck::constraints::graph::ConstraintGraphDirection

pub(crate) trait ConstraintGraphDirection: Copy + 'static {
    // Required methods
    fn start_region(c: &OutlivesConstraint<'_>) -> RegionVid;
    fn end_region(c: &OutlivesConstraint<'_>) -> RegionVid;
    fn is_normal() -> bool;
}

Marker trait that controls whether a R1: R2 constraint represents an edge R1 -> R2 or R2 -> R1.

Required Methods

fn start_region(c: &OutlivesConstraint<'_>) -> RegionVid

fn end_region(c: &OutlivesConstraint<'_>) -> RegionVid

fn is_normal() -> bool

Object Safety

This trait is not object safe.

Implementors

impl ConstraintGraphDirection for Normal

impl ConstraintGraphDirection for Reverse