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/*=============================================================================
Copyright (C) 1999-2003 Jaakko Jrvi
Copyright (c) 2001-2006 Joel de Guzman
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/detail/lightweight_test.hpp>
#include <boost/fusion/sequence/intrinsic.hpp>
#include <boost/fusion/support/is_sequence.hpp>
#include <boost/fusion/mpl.hpp>
#include <boost/mpl/find.hpp>
#include <boost/mpl/equal.hpp>
#include <boost/mpl/int.hpp>
#include <boost/mpl/integral_c.hpp>
#include <boost/type_traits/is_same.hpp>
#include <string>
#if !defined(FUSION_AT)
#define FUSION_AT at_c
#endif
#if !defined(FUSION_SIZE)
#define FUSION_SIZE result_of::size
#endif
template <typename S1, typename S2>
struct is_same
{
};
struct test_intrinsics1
{
// test at, begin, end, next, prior, advance, size, deref, etc.
typedef boost::fusion::FUSION_SEQUENCE<int, float, bool, char> sequence;
typedef boost::mpl::begin<sequence>::type first;
typedef boost::mpl::next<first>::type second;
typedef boost::mpl::next<second>::type third;
typedef boost::mpl::next<third>::type fourth;
typedef boost::mpl::end<sequence>::type last;
BOOST_STATIC_ASSERT((boost::is_same<
boost::mpl::deref<first>::type, int>::value));
BOOST_STATIC_ASSERT((boost::is_same<
boost::mpl::deref<second>::type, float>::value));
BOOST_STATIC_ASSERT((boost::is_same<
boost::mpl::deref<third>::type, bool>::value));
BOOST_STATIC_ASSERT((boost::is_same<
boost::mpl::deref<fourth>::type, char>::value));
BOOST_STATIC_ASSERT((boost::is_same<
boost::mpl::at_c<sequence, 2>::type, bool>::value));
BOOST_STATIC_ASSERT((boost::is_same<
boost::mpl::front<sequence>::type, int>::value));
BOOST_STATIC_ASSERT((boost::is_same<
boost::mpl::deref<
boost::mpl::advance_c<second, 2>::type>::type, char>::value));
BOOST_STATIC_ASSERT((boost::mpl::size<sequence>::value == 4));
BOOST_STATIC_ASSERT(!(boost::mpl::empty<sequence>::value));
BOOST_STATIC_ASSERT((boost::mpl::distance<second, fourth>::value == 2));
#if !defined(FUSION_FORWARD_ONLY) // list has no back/prev
typedef boost::mpl::prior<last>::type fourth_;
typedef boost::mpl::prior<fourth_>::type third_;
typedef boost::mpl::prior<third_>::type second_;
typedef boost::mpl::prior<second_>::type first_;
BOOST_STATIC_ASSERT((boost::is_same<
boost::mpl::deref<first_>::type, int>::value));
BOOST_STATIC_ASSERT((boost::is_same<
boost::mpl::deref<second_>::type, float>::value));
BOOST_STATIC_ASSERT((boost::is_same<
boost::mpl::deref<third_>::type, bool>::value));
BOOST_STATIC_ASSERT((boost::is_same<
boost::mpl::deref<fourth_>::type, char>::value));
BOOST_STATIC_ASSERT((boost::is_same<
boost::mpl::back<sequence>::type, char>::value));
#endif
};
struct test_intrinsics2
{
typedef boost::fusion::FUSION_SEQUENCE<> seq0;
#if !defined(FUSION_FORWARD_ONLY) // list has no back/prev
typedef boost::fusion::FUSION_SEQUENCE<int> target1;
typedef boost::mpl::push_back<seq0, int>::type seq1;
BOOST_STATIC_ASSERT((boost::mpl::equal<seq1, target1>::value));
typedef boost::fusion::FUSION_SEQUENCE<int, double> target2;
typedef boost::mpl::push_back<seq1, double>::type seq2;
BOOST_STATIC_ASSERT((boost::mpl::equal<seq2, target2>::value));
#endif
typedef boost::fusion::FUSION_SEQUENCE<int> target3;
typedef boost::mpl::push_front<seq0, int>::type seq3;
BOOST_STATIC_ASSERT((boost::mpl::equal<seq3, target3>::value));
typedef boost::fusion::FUSION_SEQUENCE<double, int> target4;
typedef boost::mpl::push_front<seq3, double>::type seq4;
BOOST_STATIC_ASSERT((boost::mpl::equal<seq4, target4>::value));
};
void
test()
{
using namespace boost::fusion;
{ // testing const sequences
const FUSION_SEQUENCE<int, float> t1(5, 3.3f);
BOOST_TEST(FUSION_AT<0>(t1) == 5);
BOOST_TEST(FUSION_AT<1>(t1) == 3.3f);
}
{ // testing at<N> works with MPL integral constants
const FUSION_SEQUENCE<int, char> t1(101, 'z');
BOOST_TEST(boost::fusion::at<boost::mpl::int_<0> >(t1) == 101);
BOOST_TEST(boost::fusion::at<boost::mpl::int_<1> >(t1) == 'z');
// explicitly try something other than mpl::int_
BOOST_TEST((boost::fusion::at<boost::mpl::integral_c<long, 0> >(t1) == 101));
BOOST_TEST((boost::fusion::at<boost::mpl::integral_c<long, 1> >(t1) == 'z'));
}
{ // testing size & empty
typedef FUSION_SEQUENCE<int, float, double> t1;
typedef FUSION_SEQUENCE<> t2;
BOOST_STATIC_ASSERT(FUSION_SIZE<t1>::value == 3);
BOOST_STATIC_ASSERT(FUSION_SIZE<t2>::value == 0);
BOOST_STATIC_ASSERT(!result_of::empty<t1>::value);
BOOST_STATIC_ASSERT(result_of::empty<t2>::value);
}
{ // testing front & back
typedef FUSION_SEQUENCE<int, float, std::string> tup;
tup t(1, 2.2, "Kimpo");
BOOST_TEST(front(t) == 1);
#if !defined(FUSION_FORWARD_ONLY) // list has no back
BOOST_TEST(back(t) == "Kimpo");
#endif
}
{ // testing is_sequence
typedef FUSION_SEQUENCE<int, float, double> t1;
typedef FUSION_SEQUENCE<> t2;
typedef FUSION_SEQUENCE<char> t3;
BOOST_STATIC_ASSERT(traits::is_sequence<t1>::value);
BOOST_STATIC_ASSERT(traits::is_sequence<t2>::value);
BOOST_STATIC_ASSERT(traits::is_sequence<t3>::value);
BOOST_STATIC_ASSERT(!traits::is_sequence<int>::value);
BOOST_STATIC_ASSERT(!traits::is_sequence<char>::value);
}
{ // testing mpl compatibility
// test begin, end, next, prior, advance, size, deref, etc.
//~ typedef FUSION_SEQUENCE<int, float, bool, char> tuple_type;
//~ test_intrinsics1<tuple_type> test1;
//~ (void)test1; // prevent unused variable warning
// test an algorithm
typedef FUSION_SEQUENCE<int, float, double> t1;
typedef boost::mpl::find<t1, float>::type iter;
typedef boost::mpl::deref<iter>::type type;
BOOST_STATIC_ASSERT((boost::is_same<type, float>::value));
}
}
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