58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2015 Joel de Guzman
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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 <boost/detail/lightweight_test.hpp>
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#include <boost/spirit/home/x3.hpp>
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#include <boost/spirit/home/x3/support/utility/annotate_on_success.hpp>
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#include <string>
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#include <sstream>
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namespace x3 = boost::spirit::x3;
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struct error_handler_base
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{
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template <typename Iterator, typename Exception, typename Context>
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x3::error_handler_result on_error(
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Iterator&, Iterator const&
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, Exception const& x, Context const& context) const
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{
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std::string message = "Error! Expecting: " + x.which() + " here:";
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auto& error_handler = x3::get<x3::error_handler_tag>(context).get();
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error_handler(x.where(), message);
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return x3::error_handler_result::fail;
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}
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};
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struct test_rule_class : x3::annotate_on_success, error_handler_base {};
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x3::rule<test_rule_class> const test_rule;
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auto const test_rule_def = x3::lit("foo") > x3::lit("bar") > x3::lit("git");
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BOOST_SPIRIT_DEFINE(test_rule)
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void test(std::string const& line_break) {
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std::string const input("foo" + line_break + " foo" + line_break + "git");
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auto const begin = std::begin(input);
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auto const end = std::end(input);
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std::stringstream stream;
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x3::error_handler<std::string::const_iterator> error_handler{begin, end, stream};
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auto const parser = x3::with<x3::error_handler_tag>(std::ref(error_handler))[test_rule];
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x3::phrase_parse(begin, end, parser, x3::space);
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BOOST_TEST_EQ(stream.str(), "In line 2:\nError! Expecting: \"bar\" here:\n foo\n__^_\n");
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}
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int main() {
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test("\n");
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test("\r");
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test("\r\n");
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return boost::report_errors();
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}
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