edit method

void edit(TreeSitterInputEdit edit)

Applies native Tree-sitter's endpoint transform to included ranges.

Implementation

void edit(TreeSitterInputEdit edit) {
  _checkNotDisposed();
  // Materialize the lazy public tree before mutating node handles. This is
  // required because an edit applies to every node that can subsequently be
  // reached from this tree, including nodes the caller has not visited yet.
  final nodes = rootNode.walk().toList(growable: false);
  for (final node in nodes) {
    node.edit(edit);
  }
  // The generated runtime always stores UTF-8 coordinates. Translate a
  // self-contained UTF-16 edit before applying it to that reuse tree. If a
  // caller supplies only native TSInputEdit fields for inserted UTF-16 text,
  // its UTF-8 width is unknowable until the replacement source arrives; in
  // that case retain the original generated tree so the next parse can
  // derive one exact UTF-8 replacement from the old and new sources.
  if (_inputEncoding == TreeSitterInputEncoding.utf8) {
    _comparisonGeneratedTree = _comparisonGeneratedTree?.edit(edit);
  } else if (_inputEncoding == TreeSitterInputEncoding.utf16LittleEndian ||
      _inputEncoding == TreeSitterInputEncoding.utf16BigEndian) {
    _editUtf16ComparisonTree(edit);
  } else {
    _comparisonGeneratedTree = generatedTree;
    _comparisonSource = source;
    _comparisonEncodingEditsExact = false;
  }
  _includedRanges = List.unmodifiable([
    for (final range in _includedRanges)
      TreeSitterRange(
        startByte: _editedByte(range.startByte, edit),
        endByte: _editedByte(range.endByte, edit),
        startPoint: _editedPoint(range.startPoint, edit),
        endPoint: _editedPoint(range.endPoint, edit),
      ),
  ]);
}