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f44479bcd3
It is better to manage warnings on our side to know what warnings we need to fix or suppress, and the only thing that header does is disabling deprecation warnings on MSVC and ICC which we would prefer to not show to users.
74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
// Copyright (c) 2001-2011 Hartmut Kaiser
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// Copyright (c) 2011 Dean Michael Berries
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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/spirit/include/qi.hpp>
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#include <boost/core/lightweight_test.hpp>
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#include <boost/fusion/tuple.hpp>
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#include <string>
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struct foo_parts
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{
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boost::optional<std::string> first;
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std::string second;
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};
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namespace boost { namespace spirit { namespace traits
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{
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template <>
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struct transform_attribute<foo_parts
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, fusion::tuple<std::string &, optional<std::string> &>
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, spirit::qi::domain>
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{
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typedef fusion::tuple<std::string&, optional<std::string>&> type;
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static type pre(foo_parts & parts)
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{
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return fusion::tie(parts.second, parts.first);
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}
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static void post(foo_parts &, type const &) {}
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static void fail(foo_parts &) {}
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};
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}}}
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namespace qi = boost::spirit::qi;
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template <typename Iterator>
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struct foo_grammar : qi::grammar<Iterator, foo_parts()>
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{
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foo_grammar() : foo_grammar::base_type(start, "foo")
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{
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foo_part =
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+qi::alpha >> -(+qi::digit)
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| qi::attr(std::string())
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>> qi::attr(boost::optional<std::string>())
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;
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start = foo_part.alias();
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}
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typedef boost::fusion::tuple<std::string&, boost::optional<std::string>&>
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tuple_type;
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qi::rule<Iterator, tuple_type()> foo_part;
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qi::rule<Iterator, foo_parts()> start;
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};
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int main()
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{
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foo_parts instance;
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foo_grammar<std::string::iterator> grammar;
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std::string input = "abc123";
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BOOST_TEST(qi::parse(input.begin(), input.end(), grammar, instance) &&
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instance.first && instance.first.get() == "123" &&
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instance.second == "abc");
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return boost::report_errors();
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}
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