| /*============================================================================= |
| Copyright (c) 2001-2011 Joel de Guzman |
| Copyright (c) 2011 Eric Niebler |
| |
| 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/algorithm/query/find.hpp> |
| #include <boost/fusion/container/generation/make_vector.hpp> |
| #include "../sequence/tree.hpp" |
| |
| struct not_there {}; |
| |
| template<typename Tree> |
| void |
| process_tree(Tree const &tree) |
| { |
| using namespace boost; |
| |
| typedef typename boost::fusion::result_of::find<Tree const, short>::type short_iter; |
| typedef typename boost::fusion::result_of::find<Tree const, float>::type float_iter; |
| typedef typename boost::fusion::result_of::find<Tree const, not_there>::type not_there_iter; |
| |
| // find_if_s of a segmented data structure returns generic |
| // segmented iterators |
| short_iter si = fusion::find<short>(tree); |
| float_iter fi = fusion::find<float>(tree); |
| |
| // they behave like ordinary Fusion iterators ... |
| BOOST_TEST((*si == short('d'))); |
| BOOST_TEST((*fi == float(1))); |
| |
| // Searching for something that's not there should return the end iterator. |
| not_there_iter nti = fusion::find<not_there>(tree); |
| BOOST_TEST((nti == fusion::end(tree))); |
| } |
| |
| int |
| main() |
| { |
| using namespace boost::fusion; |
| 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(); |
| } |
| |