ceph/src/boost/libs/spirit/test/qi/lazy.cpp

   1 /*=============================================================================
   2     Copyright (c) 2001-2011 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/include/qi_char.hpp>
   9 #include <boost/spirit/include/qi_string.hpp>
  10 #include <boost/spirit/include/qi_numeric.hpp>
  11 #include <boost/spirit/include/qi_auxiliary.hpp>
  12 #include <boost/spirit/include/qi_action.hpp>
  13 #include <boost/spirit/include/qi_nonterminal.hpp>
  14 #include <boost/spirit/include/qi_operator.hpp>
  15 #include <boost/spirit/include/support_argument.hpp>
  16 #include <boost/spirit/include/phoenix_core.hpp>
  17 #include <boost/spirit/include/phoenix_operator.hpp>
  18
  19 #include <iostream>
  20 #include "test.hpp"
  21
  22 int
  23 main()
  24 {
  25     using spirit_test::test;
  26     using spirit_test::test_attr;
  27
  28     namespace qi = boost::spirit::qi;
  29     using boost::spirit::qi::_1;
  30     using boost::spirit::qi::_val;
  31     using boost::spirit::qi::int_;
  32     using boost::spirit::qi::rule;
  33     using boost::spirit::ascii::char_;
  34
  35     using boost::phoenix::val;
  36     using boost::phoenix::ref;
  37
  38     {
  39         BOOST_TEST(test("123", val(int_)));
  40     }
  41
  42     {
  43         int result;
  44         BOOST_TEST(test("123", qi::lazy(val(int_))[ref(result) = _1]));
  45         BOOST_TEST((result == 123));
  46     }
  47
  48     {
  49         rule<char const*, char()> r;
  50
  51         r = char_[_val = _1] >> *qi::lazy(_val);
  52
  53         BOOST_TEST(test("aaaaaaaaaaaa", r));
  54         BOOST_TEST(!test("abbbbbbbbbb", r));
  55         BOOST_TEST(test("bbbbbbbbbbb", r));
  56     }
  57
  58     {
  59         rule<char const*, std::string()> r;
  60
  61         r =
  62                 '<' >> *(char_ - '>')[_val += _1] >> '>'
  63             >>  "</" >> qi::lazy(_val) >> '>'
  64         ;
  65
  66         BOOST_TEST(test("<tag></tag>", r));
  67         BOOST_TEST(!test("<foo></bar>", r));
  68     }
  69
  70     return boost::report_errors();
  71 }