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