ceph/src/boost/libs/spirit/test/x3/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/spirit/home/x3.hpp>
   9
  10 #include <iostream>
  11 #include "test.hpp"
  12
  13 int
  14 main()
  15 {
  16     using spirit_test::test;
  17     using spirit_test::test_attr;
  18     using boost::spirit::x3::ascii::space;
  19     using boost::spirit::x3::ascii::space_type;
  20     using boost::spirit::x3::ascii::char_;
  21     using boost::spirit::x3::ascii::alpha;
  22     using boost::spirit::x3::lexeme;
  23     using boost::spirit::x3::skip;
  24     using boost::spirit::x3::lit;
  25
  26     BOOST_SPIRIT_ASSERT_CONSTEXPR_CTORS(skip('x')['y']);
  27
  28     {
  29         BOOST_TEST((test("a b c d", skip(space)[*char_])));
  30     }
  31
  32     { // test attribute
  33         std::string s;
  34         BOOST_TEST((test_attr("a b c d", skip(space)[*char_], s)));
  35         BOOST_TEST(s == "abcd");
  36     }
  37
  38     { // reskip
  39         BOOST_TEST((test("ab c d", lexeme[lit('a') >> 'b' >> skip[lit('c') >> 'd']], space)));
  40         BOOST_TEST((test("abcd", lexeme[lit('a') >> 'b' >> skip[lit('c') >> 'd']], space)));
  41         BOOST_TEST(!(test("a bcd", lexeme[lit('a') >> 'b' >> skip[lit('c') >> 'd']], space)));
  42
  43         BOOST_TEST((test("ab c d", lexeme[lexeme[lit('a') >> 'b' >> skip[lit('c') >> 'd']]], space)));
  44         BOOST_TEST((test("abcd", lexeme[lexeme[lit('a') >> 'b' >> skip[lit('c') >> 'd']]], space)));
  45         BOOST_TEST(!(test("a bcd", lexeme[lexeme[lit('a') >> 'b' >> skip[lit('c') >> 'd']]], space)));
  46     }
  47
  48     return boost::report_errors();
  49 }