Trait ink_env::Topics

pub trait Topics {
    type RemainingTopics: EventTopicsAmount;

    // Required method
    fn topics<E, B>(
        &self,
        builder: TopicsBuilder<Uninit, E, B>
    ) -> <B as TopicsBuilderBackend<E>>::Output
       where E: Environment,
             B: TopicsBuilderBackend<E>;
}

Implemented by event types to guide the event topic serialization using the topics builder.

Normally this trait should be implemented automatically via the ink! codegen.

Required Associated Types

type RemainingTopics: EventTopicsAmount

Type state indicating how many event topics are to be expected by the topics builder.

Required Methods

fn topics<E, B>( &self, builder: TopicsBuilder<Uninit, E, B> ) -> <B as TopicsBuilderBackend<E>>::Outputwhere E: Environment, B: TopicsBuilderBackend<E>,

Guides event topic serialization using the given topics builder.

Implementors