Base Classes

Number of immediate base classes.

Every class listed directly in this class's inheritance list counts, regardless of whether it's inherited publicly, privately, or protectedly.

For example:

class Vehicle {
public:
  Vehicle() {}
};

class Wheeled : public Vehicle {
  ...
};

class Car : public Wheeled {
  ...
};

class Boat : public Vehicle {
  ...
};

class DualPurpose {
  ...
};

class BoatCar: private Car, public Boat, protected DualPurpose {
  ...
};

BoatCar lists three direct base classes on its inheritance list — Car (private), Boat (public), and DualPurpose (protected) — so CountClassBase = 3. The access level used for each base doesn't change whether it's counted.

See Derived Classes for the reverse relationship, and Max Inheritance Tree for how deep the full inheritance chain runs.

Also known as IFANIN.

• Basic: Class, Struct
• C#: Class, Struct
• C++: Class, Struct, Union
• Java: Class, Interface
• Pascal: Class, Interface
• Python: Class
• Web: PHP Class, PHP Interface

• This metric can be disabled from "Project Configuration/Metrics/Object Orientated" with the "Show inheritance metrics" option.