64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2011 Joel de Guzman
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Copyright (c) 2011 Eric Niebler
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#include <string>
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#include <sstream>
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#include <iostream>
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#include <boost/detail/lightweight_test.hpp>
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#include <boost/fusion/container/vector/vector.hpp>
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#include <boost/fusion/algorithm/iteration/fold.hpp>
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#include <boost/fusion/container/generation/make_vector.hpp>
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#include "../sequence/tree.hpp"
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struct write_string
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{
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typedef std::ostream* result_type;
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template<typename T>
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std::ostream* operator()(std::ostream* sout, T const& t) const
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{
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return &(*sout << t << " ");
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}
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};
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template<typename Tree>
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void
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process_tree(Tree const &tree)
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{
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using namespace boost;
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std::stringstream str;
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fusion::fold(tree, &str, write_string());
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std::string res = str.str();
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BOOST_TEST_EQ(res, "a b c 1 2 3 100 e f 0 B 1 h i 4 5 6 j k l ");
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}
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int
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main()
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{
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using namespace boost::fusion;
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process_tree(
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make_tree(
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make_vector(double(0),'B')
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, make_tree(
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make_vector(1,2,long(3))
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, make_tree(make_vector('a','b','c'))
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, make_tree(make_vector(short('d'),'e','f'))
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)
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, make_tree(
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make_vector(4,5,6)
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, make_tree(make_vector(float(1),'h','i'))
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, make_tree(make_vector('j','k','l'))
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)
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)
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);
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return boost::report_errors();
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}
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