Struct TextEdit 

pub struct TextEdit {
    pub range: TextRange,
    pub replacement: String,
}

A single-range text edit.

Shaped to mirror LSP TextEdit / rust-analyzer’s TextEdit: a byte range inside the old source text plus the UTF-8 replacement string.

Construction

Use TextEdit::replace for a generic range replacement, or TextEdit::insert for a zero-length insertion at a single offset.

Coordinate space

The range is in byte offsets over the old source, not characters and not LSP UTF-16 columns. Callers that start from LSP ranges must translate first (see crate::LineIndex).

Fields

range: TextRange

Byte range (inside the old source) that is replaced.

replacement: String

UTF-8 replacement text. Empty string = deletion.

Implementations

impl TextEdit

pub fn replace(range: TextRange, replacement: impl Into<String>) -> Self

Build a replace-range edit.

range is in byte offsets over the old source text. The replacement is owned to keep the edit value trivially movable.

pub fn insert(offset: TextSize, text: impl Into<String>) -> Self

Build a pure insertion at offset.

pub fn apply(&self, src: &str) -> String

Apply this edit to src, returning the resulting text.

Offsets that exceed src.len() are clamped to the end of the source (matching String::replace_range’s implicit behaviour). Both endpoints of range are rounded down to the previous UTF-8 char boundary if they fall in the middle of a multi-byte sequence; callers feeding ASCII-only Cypher never hit this path.

Trait Implementations

impl Clone for TextEdit

fn clone(&self) -> TextEdit

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TextEdit

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

Formats the value using the given formatter.

impl PartialEq for TextEdit

fn eq(&self, other: &TextEdit) -> 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 Eq for TextEdit

impl StructuralPartialEq for TextEdit