[−][src]Trait rustc_ap_rustc_graphviz::GraphWalk

pub trait GraphWalk<'a> {
    type Node: Clone;
    type Edge: Clone;
    fn nodes(&'a self) -> Nodes<'a, Self::Node>;
    fn edges(&'a self) -> Edges<'a, Self::Edge>;
    fn source(&'a self, edge: &Self::Edge) -> Self::Node;
    fn target(&'a self, edge: &Self::Edge) -> Self::Node;
}

GraphWalk is an abstraction over a directed graph = (nodes,edges) made up of node handles N and edge handles E, where each E can be mapped to its source and target nodes.

The lifetime parameter 'a is exposed in this trait (rather than introduced as a generic parameter on each method declaration) so that a client impl can choose N and E that have substructure that is bound by the self lifetime 'a.

The nodes and edges method each return instantiations of Cow<[T]> to leave implementors the freedom to create entirely new vectors or to pass back slices into internally owned vectors.

Associated Types

`type Node: Clone`

`type Edge: Clone`

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Required methods

`fn nodes(&'a self) -> Nodes<'a, Self::Node>`

Returns all the nodes in this graph.

`fn edges(&'a self) -> Edges<'a, Self::Edge>`

Returns all of the edges in this graph.

`fn source(&'a self, edge: &Self::Edge) -> Self::Node`

The source node for edge.

`fn target(&'a self, edge: &Self::Edge) -> Self::Node`

The target node for edge.

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Implementors

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