TAO/tao/String_Traits_T.h

   1 #ifndef guard_string_traits_hpp
   2 #define guard_string_traits_hpp
   3 /**
   4  * @file
   5  *
   6  * @brief Implement the element manipulation traits for string types.
   7  *
   8  * @author Carlos O'Ryan
   9  */
  10
  11 #include "String_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<typename char_type, class derived>
  24 struct string_traits_decorator
  25 {
  26   typedef char_type * value_type;
  27   typedef char_type const * const_value_type;
  28
  29   inline static void zero_range(
  30       char_type ** begin, char_type ** end)
  31   {
  32     ACE_OS::memset (begin, 0, (end - begin) * sizeof (char_type*));
  33   }
  34
  35   inline static void initialize_range(
  36       char_type ** begin, char_type ** end)
  37   {
  38     std::generate(begin, end, &derived::default_initializer);
  39   }
  40
  41   // Allow MSVC++ >= 8 checked iterators to be used.
  42   template <typename iter>
  43   inline static void copy_range(
  44       char_type ** begin, char_type ** end, iter dst)
  45   {
  46     std::transform(begin, end, dst, &derived::duplicate);
  47   }
  48
  49   // Allow MSVC++ >= 8 checked iterators to be used.
  50   template <typename iter>
  51   inline static void copy_swap_range(
  52       char_type ** begin, char_type ** end, iter dst)
  53   {
  54     std::swap_ranges(begin, end, dst);
  55   }
  56
  57   inline static void release_range(
  58       char_type ** begin, char_type ** end)
  59   {
  60     std::for_each(begin, end, &derived::release);
  61   }
  62
  63   inline static char_type const * initialize_if_zero(char_type * & element)
  64   {
  65     if (element == 0)
  66     {
  67       element = derived::default_initializer();
  68     }
  69     return element;
  70   }
  71 };
  72
  73 template<class charT, bool dummy>
  74 struct string_traits
  75   : public string_traits_base<charT>
  76   , public string_traits_decorator<charT,string_traits<charT,dummy> >
  77 {
  78 };
  79 } // namespace details
  80 } // namespace CORBA
  81
  82 TAO_END_VERSIONED_NAMESPACE_DECL
  83
  84 #endif // guard_string_traits_hpp