Trait Spannable 

pub trait Spannable {
    // Required method
    fn span(&self) -> Span;

    // Provided method
    fn set_span(&mut self, _span: Span) { ... }
}

Trait for objects that provide Span information. Used for error messaging.

Required Methods

fn span(&self) -> Span

Get the Span of the object

Provided Methods

fn set_span(&mut self, _span: Span)

Set the Span of the object. Possibly does nothing as implementation is optional.

Dyn Compatibility

This trait is dyn compatible.

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

Implementors