generateForClass method

@override FutureOr<String?> generateForClass(BuildStep buildStep, ClassElement classElement, ElementAnnotation annotation)

Generates code for an annotated class element.

This is called for each class in the library that has the annotation this generator is targeting.

@param buildStep The build step providing context for generation @param element The annotated class element @param annotation The annotation instance on the class @return Generated code as a string, or null if nothing to generate

Implementation

@override
FutureOr<String?> generateForClass(
  BuildStep buildStep,
  ClassElement classElement,
  ElementAnnotation annotation,
) async {
  // The retrofit generator is currently optimized for build_runner/source_gen.
  // Full lean_builder support requires adapting the codebase to use lean_builder's
  // analyzer abstractions instead of source_gen's API.
  //
  // For now, this serves as a placeholder for future lean_builder support.
  // Users should continue using build_runner for code generation:
  //   dart pub run build_runner build

  throw UnsupportedError(
    'Lean Builder support for retrofit_generator is not yet fully implemented.\n'
    'The retrofit_generator package currently works with build_runner.\n\n'
    'To generate code, please use:\n'
    '  dart pub run build_runner build\n\n'
    'For more information, see: https://github.com/trevorwang/retrofit.dart\n\n'
    'Lean Builder support is planned for a future release once lean_builder reaches stable.',
  );
}