generateForAnnotatedElement method
Future<String>
generateForAnnotatedElement(
- Element element,
- ConstantReader annotation,
- BuildStep buildStep
Implement to return source code to generate for element
.
This method is invoked based on finding elements annotated with an
instance of T
. The annotation
is provided as a ConstantReader
.
Supported return values include a single String or multiple String instances within an Iterable or Stream. It is also valid to return a Future of String, Iterable, or Stream.
Implementations should return null
when no content is generated. Empty
or whitespace-only String instances are also ignored.
Implementation
@override
Future<String> generateForAnnotatedElement(
Element element, ConstantReader annotation, BuildStep buildStep) async {
if (element is ClassElement) {
var ctx = await buildOrmContext({}, element, annotation, buildStep,
buildStep.resolver, autoSnakeCaseNames);
if (ctx == null) {
throw 'Invalid ORM build context';
}
var lib = buildOrmLibrary(buildStep.inputId, ctx);
return lib.accept(DartEmitter(useNullSafetySyntax: true)).toString();
} else {
throw 'The @Orm() annotation can only be applied to classes.';
}
}