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Add mp_transform_first, second, third

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Peter Dimov
2019-01-08 02:17:32 +02:00
parent 16c6f93cff
commit 7e501e3cc8
9 changed files with 367 additions and 3 deletions
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test/mp_transform_front.cpp Normal file
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// Copyright 2015, 2017, 2019 Peter Dimov.
//
// Distributed under the Boost Software License, Version 1.0.
//
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
#include <boost/mp11/list.hpp>
#include <boost/mp11/utility.hpp>
#include <boost/core/lightweight_test_trait.hpp>
#include <type_traits>
#include <tuple>
#include <utility>
struct X1 {};
struct X2 {};
struct X3 {};
struct X4 {};
template<class T> using add_pointer_t = T*;
using Q_add_pointer = boost::mp11::mp_quote_trait<std::add_pointer>;
int main()
{
using boost::mp11::mp_list;
using boost::mp11::mp_transform_front;
using boost::mp11::mp_transform_first;
using boost::mp11::mp_transform_front_q;
using boost::mp11::mp_transform_first_q;
{
using L1 = mp_list<X1>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_front<L1, add_pointer_t>, mp_list<X1*>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_first<L1, add_pointer_t>, mp_list<X1*>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_front_q<L1, Q_add_pointer>, mp_list<X1*>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_first_q<L1, Q_add_pointer>, mp_list<X1*>>));
using L2 = mp_list<X1, X2>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_front<L2, add_pointer_t>, mp_list<X1*, X2>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_first<L2, add_pointer_t>, mp_list<X1*, X2>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_front_q<L2, Q_add_pointer>, mp_list<X1*, X2>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_first_q<L2, Q_add_pointer>, mp_list<X1*, X2>>));
using L3 = mp_list<X1, X2, X3>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_front<L3, add_pointer_t>, mp_list<X1*, X2, X3>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_first<L3, add_pointer_t>, mp_list<X1*, X2, X3>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_front_q<L3, Q_add_pointer>, mp_list<X1*, X2, X3>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_first_q<L3, Q_add_pointer>, mp_list<X1*, X2, X3>>));
using L4 = mp_list<X1, X2, X3, X4>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_front<L4, add_pointer_t>, mp_list<X1*, X2, X3, X4>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_first<L4, add_pointer_t>, mp_list<X1*, X2, X3, X4>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_front_q<L4, Q_add_pointer>, mp_list<X1*, X2, X3, X4>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_first_q<L4, Q_add_pointer>, mp_list<X1*, X2, X3, X4>>));
}
{
using L1 = std::tuple<X1>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_front<L1, add_pointer_t>, std::tuple<X1*>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_first<L1, add_pointer_t>, std::tuple<X1*>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_front_q<L1, Q_add_pointer>, std::tuple<X1*>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_first_q<L1, Q_add_pointer>, std::tuple<X1*>>));
using L2 = std::tuple<X1, X2>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_front<L2, add_pointer_t>, std::tuple<X1*, X2>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_first<L2, add_pointer_t>, std::tuple<X1*, X2>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_front_q<L2, Q_add_pointer>, std::tuple<X1*, X2>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_first_q<L2, Q_add_pointer>, std::tuple<X1*, X2>>));
using L3 = std::tuple<X1, X2, X3>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_front<L3, add_pointer_t>, std::tuple<X1*, X2, X3>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_first<L3, add_pointer_t>, std::tuple<X1*, X2, X3>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_front_q<L3, Q_add_pointer>, std::tuple<X1*, X2, X3>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_first_q<L3, Q_add_pointer>, std::tuple<X1*, X2, X3>>));
using L4 = std::tuple<X1, X2, X3, X4>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_front<L4, add_pointer_t>, std::tuple<X1*, X2, X3, X4>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_first<L4, add_pointer_t>, std::tuple<X1*, X2, X3, X4>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_front_q<L4, Q_add_pointer>, std::tuple<X1*, X2, X3, X4>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_first_q<L4, Q_add_pointer>, std::tuple<X1*, X2, X3, X4>>));
}
{
using L2 = std::pair<X1, X2>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_front<L2, add_pointer_t>, std::pair<X1*, X2>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_first<L2, add_pointer_t>, std::pair<X1*, X2>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_front_q<L2, Q_add_pointer>, std::pair<X1*, X2>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_first_q<L2, Q_add_pointer>, std::pair<X1*, X2>>));
}
return boost::report_errors();
}