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/spirit/home/x3.hpp>
  11 #include <boost/fusion/include/vector.hpp>
  12
  13 #include <string>
  14 #include <iostream>
  15 #include "test.hpp"
  16 #include "utils.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     BOOST_SPIRIT_ASSERT_CONSTEXPR_CTORS(+char_);
  59
  60     {
  61         BOOST_TEST(test("aaaaaaaa", +char_));
  62         BOOST_TEST(test("a", +char_));
  63         BOOST_TEST(!test("", +char_));
  64         BOOST_TEST(test("aaaaaaaa", +alpha));
  65         BOOST_TEST(!test("aaaaaaaa", +upper));
  66     }
  67
  68     {
  69         BOOST_TEST(test(" a a aaa aa", +char_, space));
  70         BOOST_TEST(test("12345 678 9 ", +digit, space));
  71     }
  72
  73     //~ {
  74         //~ BOOST_TEST(test("aBcdeFGH", no_case[+char_]));
  75         //~ BOOST_TEST(test("a B cde FGH  ", no_case[+char_], space));
  76     //~ }
  77
  78     {
  79         std::vector<int> v;
  80         BOOST_TEST(test_attr("123 456 789 10", +int_, v, space) && 4 == v.size() &&
  81             v[0] == 123 && v[1] == 456 && v[2] == 789 &&  v[3] == 10);
  82     }
  83
  84     {
  85         std::vector<std::string> v;
  86         BOOST_TEST(test_attr("a b c d", +lexeme[+alpha], v, space) && 4 == v.size() &&
  87             v[0] == "a" && v[1] == "b" && v[2] == "c" &&  v[3] == "d");
  88     }
  89
  90     {
  91         BOOST_TEST(test("Kim Kim Kim", +lit("Kim"), space));
  92     }
  93
  94     // $$$ Fixme $$$
  95     /*{
  96         // The following 2 tests show that omit does not inhibit explicit attributes
  97
  98         std::string s;
  99         BOOST_TEST(test_attr("bbbb", omit[+char_('b')], s) && s == "bbbb");
 100
 101         s.clear();
 102         BOOST_TEST(test_attr("b b b b ", omit[+char_('b')], s, space) && s == "bbbb");
 103     }*/
 104
 105     { // actions
 106         std::string v;
 107         auto f = [&](auto& ctx){ v = _attr(ctx); };
 108
 109         BOOST_TEST(test("bbbb", (+char_)[f]) && 4 == v.size() &&
 110             v[0] == 'b' && v[1] == 'b' && v[2] == 'b' &&  v[3] == 'b');
 111     }
 112
 113     { // more actions
 114         std::vector<int> v;
 115         auto f = [&](auto& ctx){ v = _attr(ctx); };
 116
 117         BOOST_TEST(test("1 2 3", (+int_)[f], space) && 3 == v.size() &&
 118             v[0] == 1 && v[1] == 2 && v[2] == 3);
 119     }
 120
 121     { // attribute customization
 122
 123         x_attr x;
 124         test_attr("abcde", +char_, x);
 125     }
 126
 127     // single-element fusion vector tests
 128     {
 129         boost::fusion::vector<std::string> fs;
 130         BOOST_TEST((test_attr("12345", +char_, fs))); // ok
 131         BOOST_TEST(boost::fusion::at_c<0>(fs) == "12345");
 132     }
 133
 134     { // test move only types
 135         std::vector<move_only> v;
 136         BOOST_TEST(test_attr("sss", +synth_move_only, v));
 137         BOOST_TEST_EQ(v.size(), 3);
 138     }
 139
 140     return boost::report_errors();
 141 }