Struct Registry

pub struct Registry(/* private fields */);

A Registry stores each node, its state, and the logical Stage associated with it.

Implementations

impl Registry

pub fn new() -> Self

pub fn register<S: Stage + 'static>(&mut self, stage: S) -> usize

Add a node to the registry. This returns a unique identifier for that node, which can be used to add it to a crate::Graph

pub fn validate_node_type<S: Stage + 'static>(&self, id: usize) -> Result<()>

Returns an error if the registry doesn’t contain a node with a stage of the specified type with the given id.

pub fn unregister<S: Stage + 'static>( &mut self, id: usize, ) -> Result<Option<Node<S>>>

Remove a node from the registry and return it. This will return an error if S doesn’t match the stage type for that node.

pub fn unregister_and_drop(&mut self, id: usize) -> Result<()>

Remove a node from the registry and drop it.

pub fn get(&self, id: usize) -> Result<&Box<dyn AnyNode>>

Get a type-erased node

pub fn get_mut(&mut self, id: usize) -> Result<&mut Box<dyn AnyNode>>

Get a mutable type-erased node

pub fn get2_mut( &mut self, id0: usize, id1: usize, ) -> Result<(&mut Box<dyn AnyNode>, &mut Box<dyn AnyNode>)>

Get 2 mutable type-erased nodes

This is an important internal detail: a parent a child node often need to be modified together.