Trait ListVisitor

pub trait ListVisitor: Sized + Sealed {
    type Result;

    // Required methods
    fn visit_item<T: Display>(&mut self, item: T) -> ControlFlow<Self::Result>;
    fn finish(self) -> Self::Result;

    // Provided method
    fn visit_items_and_finish<T, I>(self, items: I) -> Self::Result
       where T: Display,
             I: IntoIterator<Item = T> { ... }
}

List visitor.

See the module documentation for usage.

Required Associated Types

type Result

Result of the visit.

Required Methods

fn visit_item<T: Display>(&mut self, item: T) -> ControlFlow<Self::Result>

Visits an item.

If this returned ControlFlow::Break(v), Context::visit should also return this v.

To feed multiple items at once, do items.into_iter().try_for_each(|item| self.visit_item(item)) for example.

fn finish(self) -> Self::Result

Finishes visiting the list.

Provided Methods

fn visit_items_and_finish<T, I>(self, items: I) -> Self::Result

where T: Display, I: IntoIterator<Item = T>,

Visits items and finish.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors