Struct dot_writer::Node

pub struct Node<'d, 'w> { /* private fields */ }

A Node is returned from Scope::node_named or Scope::node_auto, and allows for getting the id of the node for future reference via Node::id,

Importantly it also implements Attributes for setting attributes to override existing defaults for this specific node.

Implementations

impl<'d, 'w> Node<'d, 'w>

pub fn id(&self) -> NodeId

Returns a copy of the Node id, for later use with Scope::edge. Note that as the node definition will not finish writing until after this Node goes out of scope, you’ll need to save the id if you want to draw an edge to it later. This function is most usefull when the edge was automatically generated with Scope::node_auto:

use dot_writer::DotWriter;

let mut output_bytes = Vec::new();
{
    let mut writer = DotWriter::from(&mut output_bytes);
    writer.set_pretty_print(false);
    let mut digraph = writer.digraph();
    let a_id = {
        let mut sub_graph = digraph.subgraph();
        let a_id = sub_graph.node_auto().id();
        // sub_graph goes out of scope here to close bracket
        // but id is kept for later call
        a_id
    };
    digraph.edge(a_id, "b");
}
assert_eq!(
    std::str::from_utf8(&output_bytes).unwrap(),
    "digraph{subgraph{node_0;}node_0->b;}"
);

Trait Implementations

impl<'d, 'w> Deref for Node<'d, 'w>

type Target = AttributesList<'d, 'w>

The resulting type after dereferencing.

fn deref(&self) -> &AttributesList<'d, 'w>

Dereferences the value.

impl<'d, 'w> DerefMut for Node<'d, 'w>

fn deref_mut(&mut self) -> &mut AttributesList<'d, 'w>

Mutably dereferences the value.