deprecate unused virtual method

问题:

Here's an example to illustrate my issue :

class Foo1
{
  virtual void FooMethod() __attribute__((deprecated)) = 0;
};

class Foo2  : public Foo1
{
  virtual void FooMethod() = 0;
};

My class Foo1 has a pure virtual method FooMethod. I don't want user to use it anymore. I want to make them use this method in the inherited class Foo2. Foo1::FooMethod() is so deprecated and put in Foo2 : Foo2::FooMethod(). Foo2::FooMethod() is then an override of Foo1::FooMethod();

If the user try to overload Foo1::FooMethod(), he will get a compilation warning. My issue is, if the user override Foo2::FooMethod(), he also gets a warning.

How can I implement "Overload Foo1::FooMethod() is deprecated, you must override FooMethod() through Foo2". I can't delete Foo1::FooMethod() for compatibility.

Thanks !

回答1:

How can I implement "Overload Foo1::FooMethod() is deprecated, you must overload FooMethod() through Foo2". I can't delete Foo1::FooMethod() for compatibility.

At this point, you're causing such a mess in your design (:P) that I would stick with documentation.

Tell your users that the function is deprecated and shouldn't be used, then move on.