Trait BaseHost 

pub trait BaseHost {
    // Required method
    fn get_label_and_source_file(
        &self,
        location: &Location,
    ) -> (SourceSpan, Option<Arc<SourceFile>>);

    // Provided method
    fn resolve_event(&self, _event_id: EventId) -> Option<&EventName> { ... }
}

Defines the host functionality shared by both sync and async execution.

There are three main categories of interactions between the VM and the host:

1. getting a library’s MAST forest,
2. handling VM events (which can mutate the process’ advice provider).

Required Methods

fn get_label_and_source_file( &self, location: &Location, ) -> (SourceSpan, Option<Arc<SourceFile>>)

Returns the SourceSpan and optional SourceFile for the provided location.

Provided Methods

fn resolve_event(&self, _event_id: EventId) -> Option<&EventName>

Returns the EventName registered for the provided EventId, if any.

Hosts that maintain an event registry can override this method to surface human-readable names for diagnostics. The default implementation returns None.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<T: BaseHost + ?Sized> BaseHost for &mut T

fn get_label_and_source_file( &self, location: &Location, ) -> (SourceSpan, Option<Arc<SourceFile>>)

fn resolve_event(&self, event_id: EventId) -> Option<&EventName>

Implementors

impl<S> BaseHost for DefaultHost<S>

where S: SourceManager,