How to retrieve the inheritance classes associated with an abstract class?

[DeepakUniAdel]

I have an abstract method declared inside an abstract class. I am not able to retrieve information about the classes that inherits from the abstract class so that I can use that information to locate the method implementation. If you can help me with any API's that supports in this task, it will be a big help.. thanks

[JonasKlauke]

Hi, the comments explain the API.

IdentifierFactory ifac=view.getIdentifierFactory();
//class type
ClassType abstractClass = ifac.getClassType("java.util.AbstractList");
//method signature without the class
MethodSubSignature abstractMethod = ifac.getMethodSubSignature(
  "get",
  ifac.getClassType("java.lang.Object"),
  Collections.singletonList(IntType.getInstance()));

//type hierarchy is needed to get all subtypes
final ViewTypeHierarchy typeHierarchy = new ViewTypeHierarchy(view);
List<Method> implementedMethods=
    //grabs all subtypes
    typeHierarchy.subclassesOf(abstractClass).stream()
        //checks if they have a method object for the requested method
        .map(classType -> view.getMethod(new MethodSignature(classType,abstractMethod)))
        //filter not present methods
        .filter(Optional::isPresent).map(Optional::get)
        //collect all non-abstract methods
        .filter(javaSootMethod -> !javaSootMethod.isAbstract()).collect(Collectors.toList());

[DeepakUniAdel]

Thanks Jonas

[swissiety]

You can find more information at the Documentation: https://soot-oss.github.io/SootUp/latest/typehierarchy/