ACE/tests/Compiler_Features_19_Test.cpp

   1 /**
   2  * This program checks if the compiler / platform supports aliased
   3  * templates
   4  */
   5
   6 #include "test_config.h"
   7
   8 #include <string>
   9 #include <iostream>
  10 #include <cstdint>
  11
  12 namespace IDL
  13 {
  14   template<typename _CharT, const uint32_t _Bound,
  15            typename _Traits = std::char_traits<_CharT>,
  16            typename _Alloc = std::allocator<_CharT> >
  17     class bounded_basic_string : public std::basic_string<_CharT, _Traits, _Alloc>
  18     {
  19       using _String = std::basic_string<_CharT, _Traits, _Alloc>;
  20
  21     public:
  22       static const uint32_t                               bound_ = _Bound;
  23
  24       bounded_basic_string() { }
  25
  26       bounded_basic_string(const _CharT* __s,
  27                            const _Alloc& __a = _Alloc ())
  28        : _String(__s, __a) { }
  29
  30       ~bounded_basic_string() noexcept
  31       {}
  32
  33       uint32_t bound () const
  34       {
  35         return _Bound;
  36       }
  37
  38     };
  39
  40   template <const uint32_t _Bound>
  41     using bounded_string = bounded_basic_string<char, _Bound>;
  42 };
  43
  44 int
  45 run_main (int, ACE_TCHAR *[])
  46 {
  47   ACE_START_TEST (ACE_TEXT("Compiler_Features_19_Test"));
  48
  49   using string100 = IDL::bounded_string<100>;
  50   string100 s100("world");
  51
  52   ACE_DEBUG ((LM_DEBUG,
  53               ACE_TEXT ("String %C bound %d\n"), s100.c_str(), s100.bound ()));
  54
  55   ACE_DEBUG ((LM_INFO,
  56               ACE_TEXT ("Template alias works.\n")));
  57
  58   ACE_END_TEST;
  59
  60   return 0;
  61 }