ceph/src/boost/libs/spirit/classic/test/sf_bug_720917.cpp

   1 /*=============================================================================
   2     Copyright (c) 2003 Giovanni Bajo
   3     Copyright (c) 2003 Martin Wille
   4     http://spirit.sourceforge.net/
   5
   6     Use, modification and distribution is subject to the Boost Software
   7     License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   8     http://www.boost.org/LICENSE_1_0.txt)
   9 =============================================================================*/
  10 #include <boost/spirit/include/classic_multi_pass.hpp>
  11 #include <iterator>
  12 #include "impl/sstream.hpp"
  13 #include <boost/core/lightweight_test.hpp>
  14
  15 using namespace std;
  16 using namespace BOOST_SPIRIT_CLASSIC_NS;
  17
  18 // Test for bug #720917
  19 // http://sf.net/tracker/index.php?func=detail&aid=720917&group_id=28447&atid=393386
  20 //
  21 // Check that it's possible to use multi_pass
  22 // together with standard library as a normal iterator
  23 //
  24
  25 // a functor to test out the functor_multi_pass
  26 class my_functor
  27 {
  28     public:
  29         typedef char result_type;
  30         my_functor()
  31             : c('A')
  32         {}
  33
  34         char operator()()
  35         {
  36             if (c == 'M')
  37                 return eof;
  38             else
  39                 return c++;
  40         }
  41
  42         static result_type eof;
  43     private:
  44         char c;
  45 };
  46
  47 my_functor::result_type my_functor::eof = '\0';
  48
  49 ////////////////////////////////////////////////
  50 // four types of multi_pass iterators
  51 typedef multi_pass<
  52     my_functor,
  53     multi_pass_policies::functor_input,
  54     multi_pass_policies::first_owner,
  55     multi_pass_policies::no_check,
  56     multi_pass_policies::std_deque
  57 > functor_multi_pass_t;
  58
  59 typedef multi_pass<istream_iterator<char> > default_multi_pass_t;
  60 typedef look_ahead<istream_iterator<char>, 6> fixed_multi_pass_t;
  61
  62 typedef multi_pass<
  63     istream_iterator<char>,
  64     multi_pass_policies::input_iterator,
  65     multi_pass_policies::first_owner,
  66     multi_pass_policies::buf_id_check,
  67     multi_pass_policies::std_deque
  68 > first_owner_multi_pass_t;
  69
  70
  71 ////////////////////////////////////////////////
  72 // the test cases
  73 template <typename IterT>
  74 void construct_string_from(void)
  75 {
  76     sstream_t ss;
  77     ss << "test string";
  78
  79     IterT mpend;
  80     istream_iterator<char> a(ss);
  81     IterT mp1(a);
  82
  83     std::string dummy;
  84 #ifndef BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS
  85     dummy.assign(mp1, mpend);
  86 #else
  87     copy(mp1, mpend, inserter(dummy, dummy.end()));
  88 #endif
  89 }
  90
  91 template <>
  92 void construct_string_from<functor_multi_pass_t>(void)
  93 {
  94     functor_multi_pass_t mpend;
  95     functor_multi_pass_t mp1 = functor_multi_pass_t(my_functor());
  96
  97     std::string dummy;
  98 #ifndef BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS
  99     dummy.assign(mp1, mpend);
 100 #else
 101     copy(mp1, mpend, inserter(dummy, dummy.end()));
 102 #endif
 103 }
 104
 105 ////////////////////////////////////////////////
 106 // Definition of the test suite
 107 int
 108 main()
 109 {
 110     construct_string_from<default_multi_pass_t>();
 111     construct_string_from<fixed_multi_pass_t>();
 112     construct_string_from<first_owner_multi_pass_t>();
 113     construct_string_from<functor_multi_pass_t>();
 114     return boost::report_errors();
 115 }