Trait plugin::Pluggable

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

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::Value, P::Error> where
    P::Value: 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::Value, P::Error> where
    P::Value: 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::Value, P::Error> where
    P::Value: 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::Value, P::Error>

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

Implementors