ceph/src/boost/libs/range/test/compile_fail/adaptor/mock_iterator.hpp

   1 // Boost.Range library
   2 //
   3 // Copyright Neil Groves 2014. Use, modification and distribution is subject
   4 // to the Boost Software License, Version 1.0. (See accompanying file
   5 // LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt)
   7 //
   8 // For more information, see http://www.boost.org/libs/range
   9 //
  10 #ifndef BOOST_RANGE_UNIT_TEST_ADAPTOR_MOCK_ITERATOR_HPP_INCLUDED
  11 #define BOOST_RANGE_UNIT_TEST_ADAPTOR_MOCK_ITERATOR_HPP_INCLUDED
  12
  13 #include <boost/iterator/iterator_facade.hpp>
  14
  15 namespace boost
  16 {
  17     namespace range
  18     {
  19         namespace unit_test
  20         {
  21
  22 template<typename TraversalTag>
  23 class mock_iterator
  24         : public boost::iterator_facade<
  25                     mock_iterator<TraversalTag>,
  26                     int,
  27                     TraversalTag,
  28                     const int&
  29         >
  30 {
  31 public:
  32     mock_iterator()
  33         : m_value(0)
  34     {
  35     }
  36
  37     explicit mock_iterator(int value)
  38         : m_value(value)
  39     {
  40     }
  41
  42 private:
  43
  44     void increment()
  45     {
  46         ++m_value;
  47     }
  48
  49     void decrement()
  50     {
  51         --m_value;
  52     }
  53
  54     bool equal(const mock_iterator& other) const
  55     {
  56         return m_value == other.m_value;
  57     }
  58
  59     void advance(std::ptrdiff_t offset)
  60     {
  61         m_value += offset;
  62     }
  63
  64     std::ptrdiff_t distance_to(const mock_iterator& other) const
  65     {
  66         return other.m_value - m_value;
  67     }
  68
  69     const int& dereference() const
  70     {
  71         return m_value;
  72     }
  73
  74     int m_value;
  75     friend class boost::iterator_core_access;
  76 };
  77
  78         } // namespace unit_test
  79     } // namespace range
  80 } // namespace boost
  81
  82 #endif // include guard