1 /*<-
2 Copyright Barrett Adair 2016-2017
3 Distributed under the Boost Software License, Version 1.0.
4 (See accompanying file LICENSE.md or copy at http ://boost.org/LICENSE_1_0.txt)
5 ->*/
6
7 //[ add_varargs
8 #include <type_traits>
9 #include <boost/callable_traits/add_varargs.hpp>
10
11 namespace ct = boost::callable_traits;
12
13 struct foo {};
14
main()15 int main() {
16
17 {
18 using f = void(int);
19 using expect = void(int, ...);
20 using test = ct::add_varargs_t<f>;
21 static_assert(std::is_same<test, expect>::value, "");
22 } {
23 using fp = void(*)();
24 using expect = void(*)(...);
25 using test = ct::add_varargs_t<fp>;
26 static_assert(std::is_same<test, expect>::value, "");
27 } {
28 using fr = void(&)(const char*);
29 using expect = void(&)(const char*, ...);
30 using test = ct::add_varargs_t<fr>;
31 static_assert(std::is_same<test, expect>::value, "");
32 } {
33 using pmf = void(foo::*)() const;
34 using expect = void(foo::*)(...) const;
35 using test = ct::add_varargs_t<pmf>;
36 static_assert(std::is_same<test, expect>::value, "");
37
38 // add_varargs_t doesn't change anything when
39 // the type already has varargs.
40 using twice = ct::add_varargs_t<test>;
41 static_assert(std::is_same<test, twice>::value, "");
42 }
43 }
44 //]
45