Trait plugin::Pluggable

pub trait Pluggable {
    fn get<P: Plugin<Self>>(&mut self) -> Result<P, P> where P: Clone + Any, Self: Extensible { ... }
    fn get_ref<P: Plugin<Self>>(&mut self) -> Result<&P, P> where P: Any, Self: Extensible { ... }
    fn get_mut<P: Plugin<Self>>(&mut self) -> Result<&mut P, P> where P: Any, Self: Extensible { ... }
    fn compute<P: Plugin<Self>>(&mut self) -> Result<P, P> { ... }
}

An interface for plugins that cache values between calls.

R is the type of the plugin's return value, which must be cloneable.

Provided Methods

fn get<P: Plugin<Self>>(&mut self) -> Result<P, P> where P: Clone + Any, Self: Extensible

Return a copy of the plugin's produced value.

The plugin will be created if it doesn't exist already. If plugin creation fails, an error is returned.

P is the plugin type.

fn get_ref<P: Plugin<Self>>(&mut self) -> Result<&P, P> where P: Any, Self: Extensible

Return a reference to the plugin's produced value.

The plugin will be created if it doesn't exist already. If plugin creation fails an error is returned.

P is the plugin type.

fn get_mut<P: Plugin<Self>>(&mut self) -> Result<&mut P, P> where P: Any, Self: Extensible

Return a mutable reference to the plugin's produced value.

The plugin will be created if it doesn't exist already. If plugin creation fail an error is returned.

P is the plugin type.

fn compute<P: Plugin<Self>>(&mut self) -> Result<P, P>

Create and evaluate a once-off instance of a plugin.

Implementors