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;

  final copyWithMethod = getCopyWithMethod(classDecl);

  if (copyWithMethod == null) return;

  if (getMissingFieldsInCopyWith(classDecl, copyWithMethod).isEmpty) {
    return;
  }

  await builder.addDartFileEdit(file, (builder) {
    final methodRange = copyWithMethod.offset;
    final methodLength = copyWithMethod.length;

    final replacementSnippet = buildCopyWithSnippet(classDecl);

    if (replacementSnippet != null) {
      builder.addSimpleReplacement(
        SourceRange(methodRange, methodLength),
        replacementSnippet,
      );

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