Question

So I have code like:

// puma.cpp
#include "FILE_WITH_MACROS.hpp"
ANIMAL_MACROS_NAME_HERE class puma : public animal {
 public:
  puma(int age) : animal(age) {}
  virtual std::string get_name() {
    return "puma";
  }
};
//end of puma.cpp and here we want to add some more code via ANIMAL_MACROS_NAME_HERE  macros.

Can my macros that I use in the middle of my C++ file add some code to the end of my file?

Answer 1

No, but you can always add another macro in the end of the file.

In some cases it can be possible to do something like this:

#define MY_CLASS_WITH_END_STUFF(derived, parent) \
    ANIMAL_MACROS_NAME_HERE class derived : public parent \
    { \
    public: \
        ... \
    }; \
    // here you can add stuff now as part of the macro...

Then you would define the classes with the outer macro like this:

MY_CLASS_WITH_END_STUFF(puma, animal);

This can of course be extended various ways depending on needs. However, it’s restricted in certain cases e.g. where the classes you want to specify vary and do not follow a simple convention which can be put in a macro.