Struct IndexPositioner

pub struct IndexPositioner(/* private fields */);

The IndexPositioner<Item, Range> struct maintains the current index into the stream Input. The initial index is index 0. Each Item committed increments the index by 1; each range committed increments the position by range.len().

Implementations

impl IndexPositioner

pub fn new() -> IndexPositioner

pub fn new_with_position(position: usize) -> IndexPositioner

Trait Implementations

impl Clone for IndexPositioner

fn clone(&self) -> IndexPositioner

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for IndexPositioner

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for IndexPositioner

fn default() -> IndexPositioner

Returns the “default value” for a type.

impl PartialEq for IndexPositioner

fn eq(&self, other: &IndexPositioner) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<Item> Positioner<Item> for IndexPositioner

where Item: Clone,

type Position = usize

The type which keeps track of the position

type Checkpoint = IndexPositioner

fn position(&self) -> usize

Returns the current position

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

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

fn checkpoint(&self) -> Self::Checkpoint

fn reset(&mut self, checkpoint: Self::Checkpoint)

impl<Item, Range> RangePositioner<Item, Range> for IndexPositioner

where Item: Clone, Range: Clone + Range,

fn update_range(&mut self, range: &Range)

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

impl StructuralPartialEq for IndexPositioner