Struct rustc_data_structures::graph::iterate::CycleDetector

pub struct CycleDetector;

This TriColorVisitor looks for back edges in a graph, which indicate that a cycle exists.

Trait Implementations

impl<G: ?Sized> TriColorVisitor<G> for CycleDetector where
    G: DirectedGraph, 

type BreakVal = ()

The value returned by this search.

fn node_examined(
    &mut self,
    _node: G::Node,
    prior_status: Option<NodeStatus>
) -> ControlFlow<Self::BreakVal>

Called when a node is examined by the depth-first search.

fn node_settled(&mut self, _node: G::Node) -> ControlFlow<Self::BreakVal>

Called after all nodes reachable from this one have been examined.

fn ignore_edge(&mut self, _source: G::Node, _target: G::Node) -> bool

Behave as if no edges exist from source to target.

Layout

Note: Most layout information is completely unstable and may be different between compiler versions and platforms. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

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