compute method

@override Future<void> compute(ChangeBuilder builder)

Computes the changes for this producer using builder.

This method should not modify fixKind.

Implementation

@override
Future<void> compute(ChangeBuilder builder) async {
  final classDecl = node.thisOrAncestorOfType<ClassDeclaration>();
  if (classDecl == null) return;

  if (getCopyWithMethod(classDecl) != null) return;

  await builder.addDartFileEdit(file, (builder) {
    final insertOffset = classDecl.rightBracket.offset;

    builder.addInsertion(insertOffset, (builder) {
      final snippet = buildCopyWithSnippet(classDecl);
      if (snippet != null) builder.write(snippet);
    });

    builder.format(SourceRange(0, unitResult.content.length));
  });
}