Struct BidiMapper 

pub struct BidiMapper {
    pub forward: Vec<(usize, usize)>,
    pub backward: Vec<(usize, usize)>,
}

A bidirectional position mapper between two source representations.

Fields

forward: Vec<(usize, usize)>

Forward mappings (original offset -> generated offset)

backward: Vec<(usize, usize)>

Backward mappings (generated offset -> original offset)

Implementations

impl BidiMapper

pub fn new() -> Self

Create a new empty mapper.

pub fn add(&mut self, orig: usize, gen: usize)

Add a mapping.

pub fn to_gen(&self, orig: usize) -> Option<usize>

Look up the generated offset for an original offset.

pub fn to_orig(&self, gen: usize) -> Option<usize>

Look up the original offset for a generated offset.

pub fn len(&self) -> usize

Returns the number of mappings.

pub fn is_empty(&self) -> bool

Returns true if empty.

Trait Implementations

impl Default for BidiMapper

fn default() -> Self

Returns the “default value” for a type.