// Boost.Geometry
// Unit Test

// Copyright (c) 2019-2020 Oracle and/or its affiliates.

// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle

// Use, modification and distribution is subject to 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 <geometry_test_common.hpp>

#include <boost/geometry/util/tuples.hpp>

namespace bt = boost::tuples;
namespace bgt = boost::geometry::tuples;
namespace bm = boost::mpl;

template <typename T>
struct is_double
    : std::is_same<T, double>
{};

template <typename T>
struct is_float
    : std::is_same<T, float>
{};


template <typename Tuple>
struct is_boost_tuple
    : std::integral_constant<bool, false>
{};

template <typename ...Ts>
struct is_boost_tuple<boost::tuple<Ts...> >
    : std::integral_constant<bool, true>
{};

template <typename Tuple>
struct is_boost_tuples_cons
    : std::integral_constant<bool, false>
{};

template <typename HT, typename TT>
struct is_boost_tuples_cons<boost::tuples::cons<HT, TT> >
    : std::integral_constant<bool, true>
{};

template <typename Tuple>
struct is_std_pair
    : std::integral_constant<bool, false>
{};

template <typename F, typename S>
struct is_std_pair<std::pair<F, S> >
    : std::integral_constant<bool, true>
{};

template <typename Tuple>
struct is_std_tuple
    : std::integral_constant<bool, false>
{};

template <typename ...Ts>
struct is_std_tuple<std::tuple<Ts...> >
    : std::integral_constant<bool, true>
{};

template <typename Tuple>
void test_all()
{
    typedef Tuple tuple_id;
    tuple_id tup_id(1, 2.0);

    BOOST_CHECK_EQUAL((bgt::get<0>(tup_id)), 1);
    BOOST_CHECK_EQUAL((bgt::get<1>(tup_id)), 2.0);

    BOOST_CHECK_EQUAL((bgt::size<tuple_id>::value), 2u);

    BOOST_CHECK_EQUAL((bgt::find_index_if<tuple_id, is_double>::value), 1u);
    BOOST_CHECK((std::is_same<typename bgt::find_if<tuple_id, is_double>::type, double>::value));

    BOOST_CHECK_EQUAL((bgt::find_index_if<tuple_id, is_float>::value), 2u);
    BOOST_CHECK((std::is_same<typename bgt::find_if<tuple_id, is_float>::type, bg::tuples::detail::null_type>::value));

    typedef typename bgt::push_back<tuple_id, float>::type tuple_idf;
    tuple_idf tup_idf = bgt::push_back<tuple_id, float>::apply(tup_id, 3.0f);

    BOOST_CHECK_EQUAL((bgt::get<0>(tup_idf)), 1);
    BOOST_CHECK_EQUAL((bgt::get<1>(tup_idf)), 2.0);
    BOOST_CHECK_EQUAL((bgt::get<2>(tup_idf)), 3.0f);

    BOOST_CHECK_EQUAL((bgt::size<tuple_idf>::value), 3u);

    BOOST_CHECK_EQUAL((bgt::find_index_if<tuple_idf, is_float>::value), 2u);
    BOOST_CHECK((std::is_same<typename bgt::find_if<tuple_idf, is_float>::type, float>::value));

    BOOST_CHECK((
        (is_boost_tuple<tuple_id>::value && is_boost_tuples_cons<tuple_idf>::value)
     || (!is_boost_tuple<tuple_id>::value && is_std_tuple<tuple_idf>::value)
        ));

    tup_idf = bgt::push_back<tuple_id, float>::apply(std::move(tup_id), 3.0f);

    BOOST_CHECK_EQUAL((bgt::get<0>(tup_idf)), 1);
    BOOST_CHECK_EQUAL((bgt::get<1>(tup_idf)), 2.0);
    BOOST_CHECK_EQUAL((bgt::get<2>(tup_idf)), 3.0f);
}

int test_main(int, char* [])
{
    test_all<std::tuple<int, double> >();
    test_all<std::pair<int, double> >();
    test_all<boost::tuple<int, double> >();

    return 0;
}