textDeletePrevious function

TextCommandResult textDeletePrevious({
  1. required TextDocument document,
  2. required TextOffsetStateSnapshot state,
})

Implementation

TextCommandResult textDeletePrevious({
  required TextDocument document,
  required TextOffsetStateSnapshot state,
}) {
  if (state.cursorOffset <= 0) {
    return _unchangedDocumentCommandResult(document, state);
  }

  final working = document.copy();
  final result = edit_ops.deletePreviousDocumentGrapheme(
    working,
    state.cursorOffset,
  );
  return _documentCommandResult(
    working,
    cursorOffset: result.cursorOffset,
    documentChange: result.change,
    changed: result.changed,
  );
}