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/*=============================================================================
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/container/vector/vector.hpp>
#include <boost/fusion/adapted/mpl.hpp>
#include <boost/fusion/sequence/io/out.hpp>
#include <boost/fusion/algorithm/query/ext_/find_if_s.hpp>
#include <boost/fusion/container/ext_/tree.hpp>
#include <boost/fusion/container/generation/make_vector.hpp>
#include <boost/mpl/vector.hpp>
#include <boost/mpl/vector_c.hpp>
#include <boost/mpl/less.hpp>
#include <boost/type_traits/is_same.hpp>
struct X
{
operator int() const
{
return 12345;
}
};
template<typename Tree>
void
process_tree(Tree const &tree)
{
using namespace boost;
using mpl::_;
typedef typename fusion::result_of::find_if_s<Tree const, is_same<_,short> >::type short_iter;
typedef typename fusion::result_of::find_if_s<Tree const, is_same<_,float> >::type float_iter;
// find_if_s of a segmented data structure returns generic
// segmented iterators
short_iter si = fusion::find_if_s<is_same<_,short> >(tree);
float_iter fi = fusion::find_if_s<is_same<_,float> >(tree);
// they behave like ordinary Fusion iterators ...
BOOST_TEST((*si == short('d')));
BOOST_TEST((*fi == float(1)));
}
int
main()
{
using namespace boost::fusion;
{
using boost::is_same;
using boost::mpl::_;
typedef vector<int, char, int, double> vector_type;
vector_type v(12345, 'x', 678910, 3.36);
std::cout << *find_if_s<is_same<_, char> >(v) << std::endl;
BOOST_TEST((*find_if_s<is_same<_, char> >(v) == 'x'));
std::cout << *find_if_s<is_same<_, int> >(v) << std::endl;
BOOST_TEST((*find_if_s<is_same<_, int> >(v) == 12345));
std::cout << *find_if_s<is_same<_, double> >(v) << std::endl;
BOOST_TEST((*find_if_s<is_same<_, double> >(v) == 3.36));
}
{
using boost::mpl::vector;
using boost::is_same;
using boost::mpl::_;
typedef vector<int, char, X, double> mpl_vec;
BOOST_TEST((*find_if_s<is_same<_, X> >(mpl_vec()) == 12345));
}
{
using boost::mpl::vector_c;
using boost::mpl::less;
using boost::mpl::int_;
using boost::is_same;
using boost::mpl::_;
typedef vector_c<int, 1, 2, 3, 4> mpl_vec;
BOOST_TEST((*find_if_s<less<_, int_<3> > >(mpl_vec()) == 1));
}
{
process_tree(
make_tree(
make_vector(double(0),'B')
, make_tree(
make_vector(1,2,long(3))
, make_tree(make_vector('a','b','c'))
, make_tree(make_vector(short('d'),'e','f'))
)
, make_tree(
make_vector(4,5,6)
, make_tree(make_vector(float(1),'h','i'))
, make_tree(make_vector('j','k','l'))
)
)
);
}
return boost::report_errors();
}
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