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

   1 /*=============================================================================
   2     Copyright (c) 2001-2015 Joel de Guzman
   3
   4     Distributed under the Boost Software License, Version 1.0. (See accompanying
   5     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 =============================================================================*/
   7 #include <boost/detail/lightweight_test.hpp>
   8 #include <boost/spirit/home/x3.hpp>
   9
  10 #include <string>
  11 #include <iostream>
  12 #include "test.hpp"
  13
  14 int
  15 main()
  16 {
  17     using boost::spirit::x3::ascii::char_;
  18     using boost::spirit::x3::ascii::space;
  19     using boost::spirit::x3::lit;
  20     using spirit_test::test;
  21     using spirit_test::test_attr;
  22
  23     BOOST_SPIRIT_ASSERT_CONSTEXPR_CTORS(char_ - 'a');
  24
  25     // Basic tests
  26     {
  27         BOOST_TEST(test("b", char_ - 'a'));
  28         BOOST_TEST(!test("a", char_ - 'a'));
  29         BOOST_TEST(test("/* abcdefghijk */", "/*" >> *(char_ - "*/") >> "*/"));
  30         BOOST_TEST(!test("switch", lit("switch") - "switch"));
  31     }
  32
  33     // Test attributes
  34     {
  35         char attr;
  36         BOOST_TEST(test_attr("xg", (char_ - 'g') >> 'g', attr));
  37         BOOST_TEST(attr == 'x');
  38     }
  39
  40     // Test handling of container attributes
  41     {
  42         std::string attr;
  43         BOOST_TEST(test_attr("abcdefg", *(char_ - 'g') >> 'g', attr));
  44         BOOST_TEST(attr == "abcdef");
  45     }
  46
  47     {
  48         using boost::spirit::x3::_attr;
  49
  50         std::string s;
  51
  52         BOOST_TEST(test(
  53             "/*abcdefghijk*/"
  54           , "/*" >> *(char_ - "*/")[([&](auto& ctx){ s += _attr(ctx); })] >> "*/"
  55         ));
  56         BOOST_TEST(s == "abcdefghijk");
  57         s.clear();
  58
  59         BOOST_TEST(test(
  60             "    /*abcdefghijk*/"
  61           , "/*" >> *(char_ - "*/")[([&](auto& ctx){ s += _attr(ctx); })] >> "*/"
  62           , space
  63         ));
  64         BOOST_TEST(s == "abcdefghijk");
  65     }
  66
  67     return boost::report_errors();
  68 }