Macro impl_modifier_node 

macro_rules! impl_modifier_node {
    (draw) => { ... };
    (pointer_input) => { ... };
    (semantics) => { ... };
    (focus) => { ... };
    (draw, $($rest:tt)*) => { ... };
    (pointer_input, $($rest:tt)*) => { ... };
    (semantics, $($rest:tt)*) => { ... };
    (focus, $($rest:tt)*) => { ... };
}

Comprehensive macro that implements all capability-based methods for a modifier node.

This macro reduces boilerplate by automatically implementing the as_* methods for all specialized traits that the type implements. Use this as the primary way to declare which traits your node implements.

Example

impl ModifierNode for MyDrawNode {
    impl_modifier_node!(draw);
}

impl ModifierNode for MyPointerNode {
    impl_modifier_node!(pointer_input);
}

impl ModifierNode for MyComplexNode {
    impl_modifier_node!(draw, pointer_input, semantics);
}