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#include <iostream>
#include <vector>
#include <boost/openmethod.hpp>
#include <boost/openmethod/initialize.hpp>
struct Animal {
const char* name;
Animal(const char* name) : name(name) {
}
virtual ~Animal() {
}
};
struct Dog : Animal {
using Animal::Animal;
};
struct Cat : Animal {
using Animal::Animal;
};
BOOST_OPENMETHOD_CLASSES(Animal, Dog, Cat);
BOOST_OPENMETHOD(poke, (virtual_<Animal&>, std::ostream&), void);
BOOST_OPENMETHOD_OVERRIDE(poke, (Cat & animal, std::ostream& os), void) {
os << animal.name << " hisses.\n";
}
BOOST_OPENMETHOD_OVERRIDE(poke, (Dog & animal, std::ostream& os), void) {
os << animal.name << " barks.\n";
}
void poke_animals(const std::vector<Animal*>& animals, std::ostream& os) {
for (auto animal : animals) {
poke(*animal, os);
}
}
auto main() -> int {
boost::openmethod::initialize();
Dog hector{"Hector"}, snoopy{"Snoopy"};
Cat felix{"Felix"}, sylvester{"Sylvester"};
std::vector<Animal*> animals = {&hector, &felix, &sylvester, &snoopy};
poke_animals(animals, std::cout);
}
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