45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
/*<-
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Copyright Barrett Adair 2016-2017
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE.md or copy at http ://boost.org/LICENSE_1_0.txt)
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->*/
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//[ add_varargs
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#include <type_traits>
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#include <boost/callable_traits/add_varargs.hpp>
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namespace ct = boost::callable_traits;
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struct foo {};
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int main() {
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{
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using f = void(int);
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using expect = void(int, ...);
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using test = ct::add_varargs_t<f>;
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static_assert(std::is_same<test, expect>::value, "");
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} {
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using fp = void(*)();
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using expect = void(*)(...);
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using test = ct::add_varargs_t<fp>;
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static_assert(std::is_same<test, expect>::value, "");
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} {
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using fr = void(&)(const char*);
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using expect = void(&)(const char*, ...);
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using test = ct::add_varargs_t<fr>;
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static_assert(std::is_same<test, expect>::value, "");
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} {
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using pmf = void(foo::*)() const;
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using expect = void(foo::*)(...) const;
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using test = ct::add_varargs_t<pmf>;
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static_assert(std::is_same<test, expect>::value, "");
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// add_varargs_t doesn't change anything when
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// the type already has varargs.
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using twice = ct::add_varargs_t<test>;
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static_assert(std::is_same<test, twice>::value, "");
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}
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}
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//]
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