callable_traits/test/args.cpp

/*

Copyright Barrett Adair 2015
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)

*/

#include <type_traits>
#include <cstdint>
#include <memory>
#include <callable_traits/callable_traits.hpp>

#ifndef CT_ASSERT
#define CT_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
#endif //CT_ASSERT

struct foo1 {
    int bar(char, float&, int = 0) { return{}; }
};

struct foo2 {
     int bar(char, float&, int = 0, ...) { return{}; }
};

struct foo3 {
    int operator()(char, float&, int = 0) { return{}; }
};

struct foo4 {
    int operator()(char, float&, int = 0, ...) { return{}; }
};

int foo5(char, float&, int = 0) { return{}; }

int foo6(char, float&, int = 0, ...) { return{}; }

struct foo7 {
    int bar() { return{}; }
};

namespace ct = callable_traits;
using std::is_same;

int main() {

    {
        using pmf = decltype(&foo1::bar);
        using args_t = ct::args_t<pmf>;
        CT_ASSERT(is_same<args_t, std::tuple<foo1&, char, float&, int>>{});
    } {
        using pmf = decltype(&foo2::bar);
        using args_t = ct::args_t<pmf>;
        CT_ASSERT(is_same<args_t, std::tuple<foo2&, char, float&, int>>{});
    } {
        using args_t = ct::args_t<foo3>;
        CT_ASSERT(is_same<args_t, std::tuple<char, float&, int>>{});
    } {
        using args_t = ct::args_t<foo4>;
        CT_ASSERT(is_same<args_t, std::tuple<char, float&, int>>{});
    } {
        using args_t = ct::args_t<decltype(foo5)>;
        CT_ASSERT(is_same<args_t, std::tuple<char, float&, int>>{});
    } {
        using args_t = ct::args_t<decltype(foo6)>;
        CT_ASSERT(is_same<args_t, std::tuple<char, float&, int>>{});
    }

    return 0;
}