private static void determineTypeArguments()

in src/main/java/org/apache/sling/junit/jupiter/osgi/impl/ReflectionHelper.java [44:68]

• 24 lines of code
• 7 McCabe index (conditional complexity)

    private static void determineTypeArguments(Class<?> clazz, Map<TypeVariable<?>, Type> typeVariableTypeMap) {
        final Type genericSuperclass = clazz.getGenericSuperclass();
        if (genericSuperclass instanceof ParameterizedType) {
            final ParameterizedType parameterizedType = (ParameterizedType) genericSuperclass;
            typeVariableTypeMap.putAll(TypeUtils.determineTypeArguments(clazz, parameterizedType));

            final Type rawType = parameterizedType.getRawType();
            if (!(rawType instanceof Class<?>)) {
                throw new UnsupportedOperationException("Expected Class#getGenericSuperclass() to return an object of type Class<?>");
            }
            determineTypeArguments((Class<?>) rawType, typeVariableTypeMap);
        } else if (genericSuperclass instanceof Class<?>) {
            determineTypeArguments((Class<?>) genericSuperclass, typeVariableTypeMap);
        } else if (genericSuperclass == null) {
            final Type[] genericInterfaces = clazz.getGenericInterfaces();
            for (Type genericInterface : genericInterfaces) {
                if (genericInterface instanceof ParameterizedType) {
                    final ParameterizedType parameterizedType = (ParameterizedType) genericInterface;
                    typeVariableTypeMap.putAll(TypeUtils.determineTypeArguments(clazz, parameterizedType));
                }
            }
        } else {
            throw new UnsupportedOperationException("Expected Class#getGenericSuperclass() to return null or an object of type Class<?> or ParameterizedType");
        }
    }