Trait combine::stream::state::Positioner

[+] Show declaration

pub trait Positioner<Item> {
    type Position: Clone + Ord;
    fn position(&self) -> Self::Position;
    fn update(&mut self, item: &Item);
}

[−] Expand description

Trait for tracking the current position of a Stream.

Associated Types

type Position: Clone + Ord[−]

The type which keeps track of the position

Required methods

fn position(&self) -> Self::Position[−]

Returns the current position

fn update(&mut self, item: &Item)[−]

Updates the position given that item has been taken from the stream

Implementors

impl Positioner<char> for SourcePosition[+]

[+] Show hidden undocumented items

type Position = SourcePosition

fn position(&self) -> SourcePosition

fn update(&mut self, item: &char)

impl<Item> Positioner<Item> for IndexPositioner where
    Item: PartialEq + Clone, [+]

[+] Show hidden undocumented items

type Position = usize

fn position(&self) -> usize

fn update(&mut self, _item: &Item)