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// Copyright Louis Dionne 2013-2017
// 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 <boost/hana/assert.hpp>
#include <boost/hana/core/make.hpp>
#include <boost/hana/first.hpp>
#include <boost/hana/pair.hpp>
#include <boost/hana/second.hpp>
namespace hana = boost::hana;
struct MoveOnly {
int data_;
MoveOnly(MoveOnly const&) = delete;
MoveOnly& operator=(MoveOnly const&) = delete;
MoveOnly(int data) : data_(data) { }
MoveOnly(MoveOnly&& x) : data_(x.data_) { x.data_ = 0; }
MoveOnly& operator=(MoveOnly&& x)
{ data_ = x.data_; x.data_ = 0; return *this; }
bool operator==(const MoveOnly& x) const { return data_ == x.data_; }
};
int main() {
{
hana::pair<int, short> p = hana::make_pair(3, 4);
BOOST_HANA_RUNTIME_CHECK(hana::first(p) == 3);
BOOST_HANA_RUNTIME_CHECK(hana::second(p) == 4);
}
{
hana::pair<MoveOnly, short> p = hana::make_pair(MoveOnly{3}, 4);
BOOST_HANA_RUNTIME_CHECK(hana::first(p) == MoveOnly{3});
BOOST_HANA_RUNTIME_CHECK(hana::second(p) == 4);
}
{
hana::pair<MoveOnly, short> p = hana::make_pair(3, 4);
BOOST_HANA_RUNTIME_CHECK(hana::first(p) == MoveOnly{3});
BOOST_HANA_RUNTIME_CHECK(hana::second(p) == 4);
}
{
constexpr hana::pair<int, short> p = hana::make_pair(3, 4);
static_assert(hana::first(p) == 3, "");
static_assert(hana::second(p) == 4, "");
}
// equivalence with make<pair_tag>
{
constexpr hana::pair<int, short> p = hana::make<hana::pair_tag>(3, 4);
static_assert(hana::first(p) == 3, "");
static_assert(hana::second(p) == 4, "");
}
}
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