ceph/src/boost/libs/spirit/test/x3/plus.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 <string>
   8 #include <vector>
   9
  10 #include <boost/detail/lightweight_test.hpp>
  11 #include <boost/spirit/home/x3.hpp>
  12 #include <boost/fusion/include/vector.hpp>
  13
  14 #include <string>
  15 #include <iostream>
  16 #include "test.hpp"
  17
  18 struct x_attr
  19 {
  20 };
  21
  22 namespace boost { namespace spirit { namespace x3 { namespace traits
  23 {
  24     template <>
  25     struct container_value<x_attr>
  26     {
  27         typedef char type; // value type of container
  28     };
  29
  30     template <>
  31     struct push_back_container<x_attr>
  32     {
  33         static bool call(x_attr& /*c*/, char /*val*/)
  34         {
  35             // push back value type into container
  36             return true;
  37         }
  38     };
  39 }}}}
  40
  41 int
  42 main()
  43 {
  44     using spirit_test::test;
  45     using spirit_test::test_attr;
  46     using boost::spirit::x3::char_;
  47     using boost::spirit::x3::alpha;
  48     using boost::spirit::x3::upper;
  49     using boost::spirit::x3::space;
  50     using boost::spirit::x3::digit;
  51     //~ using boost::spirit::x3::no_case;
  52     using boost::spirit::x3::int_;
  53     using boost::spirit::x3::omit;
  54     using boost::spirit::x3::lit;
  55     //~ using boost::spirit::x3::_1;
  56     using boost::spirit::x3::lexeme;
  57
  58     {
  59         BOOST_TEST(test("aaaaaaaa", +char_));
  60         BOOST_TEST(test("a", +char_));
  61         BOOST_TEST(!test("", +char_));
  62         BOOST_TEST(test("aaaaaaaa", +alpha));
  63         BOOST_TEST(!test("aaaaaaaa", +upper));
  64     }
  65
  66     {
  67         BOOST_TEST(test(" a a aaa aa", +char_, space));
  68         BOOST_TEST(test("12345 678 9 ", +digit, space));
  69     }
  70
  71     //~ {
  72         //~ BOOST_TEST(test("aBcdeFGH", no_case[+char_]));
  73         //~ BOOST_TEST(test("a B cde FGH  ", no_case[+char_], space));
  74     //~ }
  75
  76     {
  77         std::vector<int> v;
  78         BOOST_TEST(test_attr("123 456 789 10", +int_, v, space) && 4 == v.size() &&
  79             v[0] == 123 && v[1] == 456 && v[2] == 789 &&  v[3] == 10);
  80     }
  81
  82     {
  83         std::vector<std::string> v;
  84         BOOST_TEST(test_attr("a b c d", +lexeme[+alpha], v, space) && 4 == v.size() &&
  85             v[0] == "a" && v[1] == "b" && v[2] == "c" &&  v[3] == "d");
  86     }
  87
  88     {
  89         BOOST_TEST(test("Kim Kim Kim", +lit("Kim"), space));
  90     }
  91
  92     // $$$ Fixme $$$
  93     /*{
  94         // The following 2 tests show that omit does not inhibit explicit attributes
  95
  96         std::string s;
  97         BOOST_TEST(test_attr("bbbb", omit[+char_('b')], s) && s == "bbbb");
  98
  99         s.clear();
 100         BOOST_TEST(test_attr("b b b b ", omit[+char_('b')], s, space) && s == "bbbb");
 101     }*/
 102
 103     { // actions
 104         std::string v;
 105         auto f = [&](auto& ctx){ v = _attr(ctx); };
 106
 107         BOOST_TEST(test("bbbb", (+char_)[f]) && 4 == v.size() &&
 108             v[0] == 'b' && v[1] == 'b' && v[2] == 'b' &&  v[3] == 'b');
 109     }
 110
 111     { // more actions
 112         std::vector<int> v;
 113         auto f = [&](auto& ctx){ v = _attr(ctx); };
 114
 115         BOOST_TEST(test("1 2 3", (+int_)[f], space) && 3 == v.size() &&
 116             v[0] == 1 && v[1] == 2 && v[2] == 3);
 117     }
 118
 119     { // attribute customization
 120
 121         x_attr x;
 122         test_attr("abcde", +char_, x);
 123     }
 124
 125     // single-element fusion vector tests
 126     {
 127         boost::fusion::vector<std::string> fs;
 128         BOOST_TEST((test_attr("12345", +char_, fs))); // ok
 129         BOOST_TEST(boost::fusion::at_c<0>(fs) == "12345");
 130     }
 131
 132     return boost::report_errors();
 133 }