generateForAnnotatedElement method
dynamic
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
dynamic generateForAnnotatedElement(
Element element, ConstantReader annotation, BuildStep buildStep) {
if (element.kind != ElementKind.CLASS &&
element.kind != ElementKind.FUNCTION) {
throw InvalidGenerationSourceError(
'`@EnableInjector` can only be used on class or function.',
element: element,
);
}
final entryPoint = annotation.peek('entryPoint')?.stringValue;
if (entryPoint == null) {
throw InvalidGenerationSourceError(
'`entryPoint` cannot null.',
element: element,
);
}
return DependencyWriter(
entryPoint: entryPoint,
allReady: annotation.peek('allReady')?.boolValue ?? false,
instance: _instanceCollector,
component: _componentCollector)
.write(buildStep);
}