generateForAnnotatedElement method
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
String generateForAnnotatedElement(
Element element,
ConstantReader annotation,
BuildStep buildStep,
) {
if (element is! ClassElement) {
final name = element.name;
throw InvalidGenerationSourceError(
'Generator cannot target `$name`.',
todo: 'Remove the JsonSerializable annotation from `$name`.',
element: element,
);
}
if (element.isEnum) {
return _generateEnum(element, annotation);
} else {
return _generateClass(element, annotation);
}
}