// selector.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"

#include <iostream>

struct S1 {
	void some_func() {
		std::cout << __func__ << std::endl;
	}
};

struct S2 {
	void some_func() {
		std::cout << __func__ << std::endl;
	}
};

struct S3 {
	void some_another_func() const {
		std::cout << __func__ << std::endl;
	}
};


template <typename T>
struct is_S3 {
	static const bool value = false;
};


template <>
struct is_S3<S3> {
	static const bool value = true;
};

template <bool BOOL>
struct struct_selector {
	template<typename T>
	static void select(T & t) {
		// fake
	}
};

template <>
struct struct_selector<true> {
	template<typename T>
	static void select(T & t) {
		t.some_another_func();
	}
};

template <>
struct struct_selector<false> {
	template<typename T>
	static void select(T & t) {
		// fake
		t.some_func();
	}
};

struct lsf : S3 {
	void some_func() {
		S3::some_another_func();
	}

	void some_another_func() {
		std::cout << "caveat" << std::endl;
	}
};

template <typename T>
void select(T & t) {
	struct_selector<is_S3<T>::value>::select(t);
}

int main(int argc, char** argv) {
	S1 s1;
	S2 s2;
	S3 s3;
	lsf ls;

	select(s1);
	select(s2);
	select(s3);
	select(ls);

	return 0;
}