| /*============================================================================= |
| 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 <string> |
| #include <sstream> |
| #include <iostream> |
| #include <boost/detail/lightweight_test.hpp> |
| #include <boost/fusion/container/vector/vector.hpp> |
| #include <boost/fusion/algorithm/iteration/fold.hpp> |
| #include <boost/fusion/container/generation/make_vector.hpp> |
| #include "../sequence/tree.hpp" |
| |
| struct write_string |
| { |
| typedef std::ostream* result_type; |
| |
| template<typename T> |
| std::ostream* operator()(std::ostream* sout, T const& t) const |
| { |
| return &(*sout << t << " "); |
| } |
| }; |
| |
| template<typename Tree> |
| void |
| process_tree(Tree const &tree) |
| { |
| using namespace boost; |
| |
| std::stringstream str; |
| fusion::fold(tree, &str, write_string()); |
| std::string res = str.str(); |
| |
| BOOST_TEST_EQ(res, "a b c 1 2 3 100 e f 0 B 1 h i 4 5 6 j k l "); |
| } |
| |
| 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(); |
| } |
| |