ceph/src/boost/libs/spirit/test/x3/no_skip.cpp

   1 /*=============================================================================
   2     Copyright (c) 2001-2015 Joel de Guzman
   3     Copyright (c) 2013 Agustin Berge
   4
   5     Distributed under the Boost Software License, Version 1.0. (See accompanying
   6     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   7 =============================================================================*/
   8 #include <boost/detail/lightweight_test.hpp>
   9 #include <boost/spirit/home/x3.hpp>
  10
  11 #include <iostream>
  12 #include "test.hpp"
  13
  14 int
  15 main()
  16 {
  17     using spirit_test::test;
  18     using spirit_test::test_attr;
  19     using boost::spirit::x3::ascii::space;
  20     using boost::spirit::x3::ascii::space_type;
  21     using boost::spirit::x3::ascii::char_;
  22     using boost::spirit::x3::lexeme;
  23     using boost::spirit::x3::no_skip;
  24
  25     BOOST_SPIRIT_ASSERT_CONSTEXPR_CTORS(no_skip['x']);
  26
  27     // without skipping no_skip is equivalent to lexeme
  28     {
  29         std::string str;
  30         BOOST_TEST((test_attr("'  abc '", '\'' >> no_skip[+~char_('\'')] >> '\'', str)));
  31         BOOST_TEST(str == "  abc ");
  32     }
  33     {
  34         std::string str;
  35         BOOST_TEST((test_attr("'  abc '", '\'' >> lexeme[+~char_('\'')] >> '\'', str)));
  36         BOOST_TEST(str == "  abc ");
  37     }
  38
  39     // with skipping, no_skip allows to match a leading skipper
  40     {
  41         std::string str;
  42         BOOST_TEST((test_attr("'  abc '", '\'' >> no_skip[+~char_('\'')] >> '\'', str, space)));
  43         BOOST_TEST(str == "  abc ");
  44     }
  45     {
  46         std::string str;
  47         BOOST_TEST((test_attr("'  abc '", '\'' >> lexeme[+~char_('\'')] >> '\'', str, space)));
  48         BOOST_TEST(str == "abc ");
  49     }
  50
  51     return boost::report_errors();
  52 }