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Add mp_intersperse

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Peter Dimov
2021-03-12 04:27:50 +02:00
parent 0dea2f1a2b
commit 080c3437ed
3 changed files with 60 additions and 0 deletions
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test/mp_intersperse.cpp Normal file
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// Copyright 2021 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/mp11/algorithm.hpp>
#include <boost/mp11/list.hpp>
#include <boost/core/lightweight_test_trait.hpp>
#include <type_traits>
#include <tuple>
#include <utility>
struct X1 {};
struct X2 {};
struct X3 {};
struct X4 {};
struct X5 {};
int main()
{
using boost::mp11::mp_list;
using boost::mp11::mp_intersperse;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_intersperse<mp_list<>, void>, mp_list<>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_intersperse<mp_list<X1>, void>, mp_list<X1>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_intersperse<mp_list<X1, X2>, void>, mp_list<X1, void, X2>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_intersperse<mp_list<X1, X2, X3>, void>, mp_list<X1, void, X2, void, X3>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_intersperse<mp_list<X1, X2, X3, X4>, void>, mp_list<X1, void, X2, void, X3, void, X4>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_intersperse<mp_list<X1, X2, X3, X4, X5>, void>, mp_list<X1, void, X2, void, X3, void, X4, void, X5>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_intersperse<std::tuple<>, void>, std::tuple<>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_intersperse<std::tuple<X1>, void>, std::tuple<X1>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_intersperse<std::tuple<X1, X2>, void>, std::tuple<X1, void, X2>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_intersperse<std::tuple<X1, X2, X3>, void>, std::tuple<X1, void, X2, void, X3>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_intersperse<std::tuple<X1, X2, X3, X4>, void>, std::tuple<X1, void, X2, void, X3, void, X4>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_intersperse<std::tuple<X1, X2, X3, X4, X5>, void>, std::tuple<X1, void, X2, void, X3, void, X4, void, X5>>));
return boost::report_errors();
}