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- /*=============================================================================
- Copyright (c) 2009 Hartmut Kaiser
- 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/include/vector.hpp>
- #include <boost/fusion/include/struct.hpp>
- #include <boost/fusion/include/equal_to.hpp>
- #include <boost/fusion/include/io.hpp>
- #include <boost/fusion/include/nview.hpp>
- #include <string>
- #include <iostream>
- struct test {
- int int_;
- std::string string_;
- double double_;
- };
- BOOST_FUSION_ADAPT_STRUCT(
- test,
- (int, int_)
- (std::string, string_)
- (double, double_)
- )
- namespace fusion = boost::fusion;
- template <typename Sequence>
- bool check_size(Sequence const& s, int seqsize)
- {
- return fusion::size(s) == seqsize;
- }
- template <typename Sequence, typename T>
- bool check_deref_begin(Sequence const& s, T val)
- {
- return fusion::deref(fusion::begin(s)) == val;
- }
- template <typename Sequence, typename T>
- bool check_deref_next(Sequence const& s, T val)
- {
- return fusion::deref(fusion::next(fusion::begin(s))) == val;
- }
- template <int N, typename Sequence, typename T>
- bool check_deref_advance(Sequence const& s, T val)
- {
- return fusion::deref(fusion::advance_c<N>(fusion::begin(s))) == val;
- }
- template <typename Sequence, typename T>
- bool check_deref_prior(Sequence const& s, T val)
- {
- return fusion::deref(fusion::prior(fusion::end(s))) == val;
- }
- template <int N, typename Sequence, typename T>
- bool check_at(Sequence const& s, T val)
- {
- return fusion::at_c<N>(s) == val;
- }
- template <typename Sequence>
- bool check_distance(Sequence const& s, int val)
- {
- return fusion::distance(fusion::begin(s), fusion::end(s)) == val;
- }
- int main()
- {
- test t;
- t.int_ = 1;
- t.string_ = "test";
- t.double_ = 2.0;
- using fusion::as_nview;
- // check size()
- {
- BOOST_TEST(check_size(as_nview<0>(t), 1));
- BOOST_TEST(check_size(as_nview<2, 1>(t), 2));
- BOOST_TEST(check_size(as_nview<2, 1, 0>(t), 3));
- BOOST_TEST(check_size(as_nview<2, 1, 0, 2, 0>(t), 5));
- }
- // check deref/begin
- {
- BOOST_TEST(check_deref_begin(as_nview<0>(t), 1));
- BOOST_TEST(check_deref_begin(as_nview<2, 1>(t), 2.0));
- BOOST_TEST(check_deref_begin(as_nview<1, 2, 0>(t), "test"));
- BOOST_TEST(check_deref_begin(as_nview<2, 1, 0, 2, 0>(t), 2.0));
- }
- // check deref/next
- {
- BOOST_TEST(check_deref_next(as_nview<2, 1>(t), "test"));
- BOOST_TEST(check_deref_next(as_nview<1, 2, 0>(t), 2.0));
- BOOST_TEST(check_deref_next(as_nview<2, 0, 1, 2, 0>(t), 1));
- }
- // check deref/advance
- {
- BOOST_TEST(check_deref_advance<0>(as_nview<2, 1>(t), 2.0));
- BOOST_TEST(check_deref_advance<2>(as_nview<1, 2, 0>(t), 1));
- BOOST_TEST(check_deref_advance<4>(as_nview<2, 0, 1, 2, 0>(t), 1));
- }
- // check deref/prior
- {
- BOOST_TEST(check_deref_prior(as_nview<2, 1>(t), "test"));
- BOOST_TEST(check_deref_prior(as_nview<1, 2, 0>(t), 1));
- BOOST_TEST(check_deref_prior(as_nview<2, 0, 1, 2, 0>(t), 1));
- }
- // check at
- {
- BOOST_TEST(check_at<0>(as_nview<0>(t), 1));
- BOOST_TEST(check_at<1>(as_nview<2, 1>(t), "test"));
- BOOST_TEST(check_at<2>(as_nview<1, 2, 0>(t), 1));
- BOOST_TEST(check_at<4>(as_nview<2, 1, 0, 2, 0>(t), 1));
- }
- // check distance
- {
- BOOST_TEST(check_distance(as_nview<0>(t), 1));
- BOOST_TEST(check_distance(as_nview<2, 1>(t), 2));
- BOOST_TEST(check_distance(as_nview<1, 2, 0>(t), 3));
- BOOST_TEST(check_distance(as_nview<2, 1, 0, 2, 0>(t), 5));
- }
- return boost::report_errors();
- }
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