ceph/src/boost/libs/python/include/boost/python/detail/decorated_type_id.hpp

   1 // Copyright David Abrahams 2002.
   2 // Distributed under the Boost Software License, Version 1.0. (See
   3 // accompanying file LICENSE_1_0.txt or copy at
   4 // http://www.boost.org/LICENSE_1_0.txt)
   5 #ifndef DECORATED_TYPE_ID_DWA2002517_HPP
   6 # define DECORATED_TYPE_ID_DWA2002517_HPP
   7
   8 # include <boost/python/type_id.hpp>
   9 # include <boost/python/detail/indirect_traits.hpp>
  10 # include <boost/type_traits/cv_traits.hpp>
  11
  12 namespace boost { namespace python { namespace detail {
  13
  14 struct decorated_type_info : totally_ordered<decorated_type_info>
  15 {
  16     enum decoration { const_ = 0x1, volatile_ = 0x2, reference = 0x4 };
  17
  18     decorated_type_info(type_info, decoration = decoration());
  19
  20     inline bool operator<(decorated_type_info const& rhs) const;
  21     inline bool operator==(decorated_type_info const& rhs) const;
  22
  23     friend BOOST_PYTHON_DECL std::ostream& operator<<(std::ostream&, decorated_type_info const&);
  24
  25     operator type_info const&() const;
  26  private: // type
  27     typedef type_info base_id_t;
  28
  29  private: // data members
  30     decoration m_decoration;
  31     base_id_t m_base_type;
  32 };
  33
  34 template <class T>
  35 inline decorated_type_info decorated_type_id(boost::type<T>* = 0)
  36 {
  37     return decorated_type_info(
  38         type_id<T>()
  39         , decorated_type_info::decoration(
  40             (is_const<T>::value || indirect_traits::is_reference_to_const<T>::value
  41              ? decorated_type_info::const_ : 0)
  42             | (is_volatile<T>::value || indirect_traits::is_reference_to_volatile<T>::value
  43                ? decorated_type_info::volatile_ : 0)
  44             | (is_reference<T>::value ? decorated_type_info::reference : 0)
  45             )
  46         );
  47 }
  48
  49 inline decorated_type_info::decorated_type_info(type_info base_t, decoration decoration)
  50     : m_decoration(decoration)
  51     , m_base_type(base_t)
  52 {
  53 }
  54
  55 inline bool decorated_type_info::operator<(decorated_type_info const& rhs) const
  56 {
  57     return m_decoration < rhs.m_decoration
  58       || (m_decoration == rhs.m_decoration
  59           && m_base_type < rhs.m_base_type);
  60 }
  61
  62 inline bool decorated_type_info::operator==(decorated_type_info const& rhs) const
  63 {
  64     return m_decoration == rhs.m_decoration && m_base_type == rhs.m_base_type;
  65 }
  66
  67 inline decorated_type_info::operator type_info const&() const
  68 {
  69     return m_base_type;
  70 }
  71
  72 BOOST_PYTHON_DECL std::ostream& operator<<(std::ostream&, decorated_type_info const&);
  73
  74 }}} // namespace boost::python::detail
  75
  76 #endif // DECORATED_TYPE_ID_DWA2002517_HPP