private void reportErrorIfNoImplementationTypeIsRegisteredForInterfaceReturnType(
SourceMethod method) {
if (method.getReturnType().getTypeMirror().getKind() != TypeKind.VOID
&& method.getReturnType().isInterface()
&& method.getReturnType().getImplementationType() == null) {
messager.printMessage(
method.getExecutable(), Message.GENERAL_NO_IMPLEMENTATION, method.getReturnType());
}
}
private static boolean isValidCandidate(
SourceMethod candidate, Method method, List<Parameter> parameterAssignments) {
if (parameterAssignments == null) {
return false;
}
if (!candidate.matches(extractSourceTypes(parameterAssignments), method.getResultType())) {
return false;
}
return (candidate.getReturnType().isVoid()
|| candidate.getReturnType().isTypeVar()
|| candidate.getReturnType().isAssignableTo(method.getResultType()));
}
