84 lines
2.7 KiB
C++
84 lines
2.7 KiB
C++
// Copyright (c) 2010 Olaf Peter
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// Copyright (c) 2001-2010 Hartmut Kaiser
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//
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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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#include <boost/detail/lightweight_test.hpp>
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#include <boost/spirit/include/qi_operator.hpp>
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#include <boost/spirit/include/qi_char.hpp>
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#include <boost/spirit/include/qi_string.hpp>
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#include <boost/spirit/include/qi_numeric.hpp>
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#include <boost/spirit/include/qi_directive.hpp>
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#include <boost/spirit/include/qi_nonterminal.hpp>
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#include <boost/fusion/include/nview.hpp>
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namespace qi = boost::spirit::qi;
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namespace ascii = boost::spirit::ascii;
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namespace fusion = boost::fusion;
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namespace mpl = boost::mpl;
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int main()
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{
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using fusion::result_of::as_nview;
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using fusion::at_c;
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using boost::optional;
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using boost::variant;
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using ascii::space_type;
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using ascii::no_case;
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using qi::lit;
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using qi::double_;
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typedef fusion::vector<
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optional<double>, // 0 - U
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optional<double>, // 1 - V
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optional<double> // 2 - W
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> uvw_type;
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typedef as_nview<uvw_type, 0, 1, 2>::type uvw_reordered_type;
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typedef as_nview<uvw_type, 2, 0, 1>::type vwu_reordered_type;
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typedef char const* iterator_type;
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qi::rule<iterator_type, optional<double>(), space_type> u,v,w;
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qi::rule<iterator_type, uvw_reordered_type(), space_type> uvw;
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qi::rule<iterator_type, vwu_reordered_type(), space_type> vwu;
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u = no_case[ "NA" ] | ( double_ >> -lit( "U" ) );
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v = no_case[ "NA" ] | ( double_ >> -lit( "V" ) );
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w = no_case[ "NA" ] | ( double_ >> -lit( "W" ) );
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uvw = u > v > w;
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vwu = v > w > u;
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uvw_type uvw_data;
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{
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iterator_type first = "1U 2V 3W";
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iterator_type last = first + std::strlen(first);
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uvw_reordered_type uvw_result( uvw_data );
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BOOST_TEST(qi::phrase_parse(first, last, uvw, ascii::space, uvw_result));
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BOOST_TEST(fusion::at_c<0>(uvw_result) && *fusion::at_c<0>(uvw_result) == 1);
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BOOST_TEST(fusion::at_c<1>(uvw_result) && *fusion::at_c<1>(uvw_result) == 2);
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BOOST_TEST(fusion::at_c<2>(uvw_result) && *fusion::at_c<2>(uvw_result) == 3);
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}
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{
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iterator_type first = "2V 3W 1U";
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iterator_type last = first + std::strlen(first);
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vwu_reordered_type uvw_result(uvw_data);
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BOOST_TEST(qi::phrase_parse(first, last, vwu, ascii::space, uvw_result));
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BOOST_TEST(fusion::at_c<0>(uvw_result) && *fusion::at_c<0>(uvw_result) == 2);
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BOOST_TEST(fusion::at_c<1>(uvw_result) && *fusion::at_c<1>(uvw_result) == 3);
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BOOST_TEST(fusion::at_c<2>(uvw_result) && *fusion::at_c<2>(uvw_result) == 1);
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}
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return boost::report_errors();
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}
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