generate method

@override String? generate(LibraryReader library, BuildStep? buildStep)

Generates Dart code for an input Dart library.

May create additional outputs through the buildStep, but the 'primary' output is Dart code returned through the Future. If there is nothing to generate for this library may return null, or a Future that resolves to null or the empty string.

Implementation

@override
String? generate(LibraryReader library, BuildStep? buildStep) {
  try {
    // An injector is an abstract class where all abstract methods are
    // annotated with Register.
    final injectors = library.classes
        .where((c) =>
            c.isAbstract &&
            c.methods.where((m) => m.isAbstract).isNotEmpty &&
            c.methods
                .where((m) => m.isAbstract && _isRegisterMethod(m))
                .isNotEmpty)
        .toList();

    if (injectors.isEmpty) {
      return null;
    }
    final file = Library((lb) => lb
      ..body.addAll(
          injectors.map((i) => _generateInjector(i, library, buildStep))));

    final DartEmitter emitter = DartEmitter(allocator: Allocator());
    return DartFormatter().format('${file.accept(emitter)}');
  } catch (e) {
    if (e is KiwiGeneratorError || e is UnresolvedAnnotationException) {
      rethrow;
    } else if (e is Error) {
      throw KiwiGeneratorError(
          'Something went wrong with the KiwiGenerator. Please create a new ticket with a copy of your error to https://github.com/vanlooverenkoen/kiwi/issues/new?labels=kiwi_generator,bug',
          error: e);
    } else {
      throw KiwiGeneratorError(
          'Something went wrong with the KiwiGenerator. Please create a new ticket with a copy of your error to https://github.com/vanlooverenkoen/kiwi/issues/new?labels=kiwi_generator,bug');
    }
  }
}