Struct EditDelta 

pub struct EditDelta {
    pub start_byte: u32,
    pub old_end_byte: u32,
    pub new_end_byte: u32,
    pub start_position: Position,
    pub old_end_position: Position,
    pub new_end_position: Position,
}

Tree-sitter-shaped description of a single applied edit.

Carries the six fields tree-sitter’s InputEdit needs (three byte offsets + three line/byte positions) so a syntax worker can drive incremental reparse without re-querying the buffer. Produced as a by-product of Buffer::apply_edit (zero new rope reads – every field is already computed there); rides on lattice_core::AppliedEdit. The actual tree_sitter::InputEdit conversion lives in lattice-syntax so this crate stays parser-agnostic.

Field semantics match tree-sitter:

• start_byte: byte offset of the edit’s start in the pre-edit buffer.
• old_end_byte: byte offset of the end of the deleted span in the pre-edit buffer (== start_byte for pure inserts).
• new_end_byte: byte offset of the end of the inserted span in the post-edit buffer (== start_byte for pure deletes).
• start_position / old_end_position / new_end_position: the same three points in line-and-byte-within-line form. Position.byte is byte-within-line, which already matches tree-sitter’s Point.column semantics (column-as-bytes).

Copy so callers pass it through chains by register move, not by Arc bump. 36 bytes – fits one cache line.

The producer (lattice_core::Buffer::apply_edit) saturates each byte offset at u32::MAX rather than panicking on a buffer over 4 GiB.

Fields

start_byte: u32

Absolute byte offset (from the start of the buffer) where the edit begins; the same in the pre- and post-edit buffer.

old_end_byte: u32

Absolute byte offset of the end of the removed span, in the pre-edit buffer. Equals start_byte for a pure insert.

new_end_byte: u32

Absolute byte offset of the end of the inserted span, in the post-edit buffer. Equals start_byte for a pure delete.

start_position: Position

start_byte as (line, byte-within-line).

old_end_position: Position

old_end_byte as (line, byte-within-line), pre-edit.

new_end_position: Position

new_end_byte as (line, byte-within-line), post-edit.

Trait Implementations

impl Clone for EditDelta

fn clone(&self) -> EditDelta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for EditDelta

impl Debug for EditDelta

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for EditDelta

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for EditDelta

impl PartialEq for EditDelta

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for EditDelta

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for EditDelta