TAO/tao/Object_Reference_Traits_T.h

   1 #ifndef guard_object_reference_traits_hpp
   2 #define guard_object_reference_traits_hpp
   3 /**
   4  * @file
   5  *
   6  * @brief Implement the element manipulation traits for object
   7  *        reference types.
   8  *
   9  * @author Carlos O'Ryan
  10  */
  11 #include "Object_Reference_Traits_Base_T.h"
  12 #include "ace/OS_NS_string.h"
  13
  14 #include <algorithm>
  15 #include <functional>
  16
  17 TAO_BEGIN_VERSIONED_NAMESPACE_DECL
  18
  19 namespace TAO
  20 {
  21 namespace details
  22 {
  23 template<class object_t, class object_t_var, class derived>
  24 struct object_reference_traits_decorator
  25 {
  26   typedef object_t object_type;
  27   typedef object_type * value_type;
  28   typedef object_type const * const_value_type;
  29   typedef object_t_var object_type_var;
  30
  31   inline static void zero_range(
  32       object_type ** begin, object_type ** end)
  33   {
  34     ACE_OS::memset (begin, 0, (end - begin) * sizeof (object_type*));
  35   }
  36
  37   inline static void initialize_range(
  38       object_type ** begin, object_type ** end)
  39   {
  40     std::generate(begin, end, &derived::default_initializer);
  41   }
  42
  43   // Allow MSVC++ >= 8 checked iterators to be used.
  44   template <typename iter>
  45   inline static void copy_range(
  46       object_type ** begin, object_type ** end, iter dst)
  47   {
  48     std::transform(begin, end, dst, &derived::duplicate);
  49   }
  50
  51   // Allow MSVC++ >= 8 checked iterators to be used.
  52   template <typename iter>
  53   inline static void copy_swap_range(
  54       object_type ** begin, object_type ** end, iter dst)
  55   {
  56     std::swap_ranges(begin, end, dst);
  57   }
  58
  59   inline static void release_range(
  60       object_type ** begin, object_type ** end)
  61   {
  62     std::for_each(begin, end, &derived::release);
  63   }
  64
  65   inline static object_type const * initialize_if_zero(object_type * & element)
  66   {
  67     if (element == 0)
  68     {
  69       element = derived::nil();
  70     }
  71     return element;
  72   }
  73 };
  74
  75 template<typename object_t, typename object_t_var, bool dummy>
  76 struct object_reference_traits
  77   : public object_reference_traits_base<object_t, object_t_var>
  78   , public object_reference_traits_decorator<object_t, object_t_var, object_reference_traits<object_t,object_t_var,dummy> >
  79 {
  80   typedef object_t object_type;
  81   typedef object_type * value_type;
  82   typedef object_type const * const_value_type;
  83   typedef object_t_var object_type_var;
  84 };
  85 } // namespace details
  86 } // namespace CORBA
  87
  88 TAO_END_VERSIONED_NAMESPACE_DECL
  89
  90 #endif // guard_object_reference_traits_hpp