Struct RunRemap 

pub struct RunRemap {
    pub first: u32,
    pub old_lens: Vec<u32>,
    pub new_lens: Vec<u32>,
    pub middle: Option<RunTextChange>,
    pub prev_len: Option<u32>,
}

One contiguous change to a run’s text (U3-a): bytes start..end of the OLD text were replaced by inserted bytes. The shape every caret shift is computed from, whoever made the change. An edit that changed the RUN COUNT of a node’s inline content (U3-a-i): a delete spanning two styled runs merged them, a styled paste split one. The runs before first and the runs after the changed middle are the same in both generations (aligned by common prefix and suffix); a caret in the middle is mapped through the concatenated middle text, a caret after it keeps its byte and moves its run index by the count delta.

Fields

first: u32

The first old run index that differs.

old_lens: Vec<u32>

Text lengths of the old middle runs first ...

new_lens: Vec<u32>

Text lengths of the new middle runs first ...

middle: Option<RunTextChange>

The byte change between the concatenated old and new middle texts, if they differ (run is meaningless here).

prev_len: Option<u32>

Length of the unchanged run just before the middle, when there is one: where a caret lands when the whole middle vanished.

Implementations

impl RunRemap

pub fn map_cursor(&self, c: TextCursor) -> TextCursor

Where a caret of the old generation sits in the new one.

Trait Implementations

impl Clone for RunRemap

fn clone(&self) -> RunRemap

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RunRemap

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

Formats the value using the given formatter.

impl Eq for RunRemap

impl PartialEq for RunRemap

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RunRemap