Trait ferrum::Plugin [−] [src]

pub trait Plugin<A = UnsafeAny + 'static> where
    A: UnsafeAnyExt + ?Sized, {
    fn get<'a, P>(
        &'a mut self
    ) -> Result<<P as Key>::Value, <P as Plugin<Self>>::Error>
    where
        A: 'a,
        P: Plugin<Self>,
        Self: Extensible<A>,
        <P as Key>::Value: Clone,
        <P as Key>::Value: Any,
        <P as Key>::Value: Implements<A>,
    { ... }

    fn get_ref<'a, P>(
        &'a mut self
    ) -> Result<&'a <P as Key>::Value, <P as Plugin<Self>>::Error>
    where
        A: 'a,
        P: Plugin<Self>,
        Self: Extensible<A>,
        <P as Key>::Value: Any,
        <P as Key>::Value: Implements<A>,
    { ... }

    fn get_mut<'a, P>(
        &'a mut self
    ) -> Result<&'a mut <P as Key>::Value, <P as Plugin<Self>>::Error>
    where
        A: 'a,
        P: Plugin<Self>,
        Self: Extensible<A>,
        <P as Key>::Value: Any,
        <P as Key>::Value: Implements<A>,
    { ... }

    fn compute<P>(
        &mut self
    ) -> Result<<P as Key>::Value, <P as Plugin<Self>>::Error>
    where
        P: Plugin<Self>,
    { ... }
}

An interface for plugins that cache values between calls.

Provided Methods

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.

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.

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.

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

Implementors