factory.hpp 3.9 KB

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  1. #ifndef BOOST_SERIALIZATION_FACTORY_HPP
  2. #define BOOST_SERIALIZATION_FACTORY_HPP
  3. /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
  4. // MS compatible compilers support #pragma once
  5. #if defined(_MSC_VER)
  6. # pragma once
  7. #endif
  8. // factory.hpp: create an instance from an extended_type_info instance.
  9. // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
  10. // Use, modification and distribution is subject to the Boost Software
  11. // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  12. // http://www.boost.org/LICENSE_1_0.txt)
  13. // See http://www.boost.org for updates, documentation, and revision history.
  14. #include <cstdarg> // valist
  15. #include <cstddef> // NULL
  16. #include <boost/preprocessor/control/if.hpp>
  17. #include <boost/preprocessor/comparison/greater.hpp>
  18. namespace std{
  19. #if defined(__LIBCOMO__)
  20. using ::va_list;
  21. #endif
  22. } // namespace std
  23. namespace boost {
  24. namespace serialization {
  25. // default implementation does nothing.
  26. template<class T, int N>
  27. T * factory(std::va_list){
  28. BOOST_ASSERT(false);
  29. // throw exception here?
  30. return NULL;
  31. }
  32. } // namespace serialization
  33. } // namespace boost
  34. #define BOOST_SERIALIZATION_FACTORY(N, T, A0, A1, A2, A3) \
  35. namespace boost { \
  36. namespace serialization { \
  37. template<> \
  38. T * factory<T, N>(std::va_list ap){ \
  39. BOOST_PP_IF(BOOST_PP_GREATER(N,0) \
  40. ,A0 a0 = va_arg(ap, A0); \
  41. ,BOOST_PP_IF(BOOST_PP_GREATER(N,1) \
  42. ,A1 a1 = va_arg(ap, A1); \
  43. ,BOOST_PP_IF(BOOST_PP_GREATER(N,2) \
  44. ,A2 a2 = va_arg(ap, A2); \
  45. ,BOOST_PP_IF(BOOST_PP_GREATER(N,3) \
  46. ,A3 a3 = va_arg(ap, A3); \
  47. ,BOOST_PP_EMPTY() \
  48. )))) \
  49. return new T( \
  50. BOOST_PP_IF(BOOST_PP_GREATER(N,0) \
  51. ,a0 \
  52. ,BOOST_PP_IF(BOOST_PP_GREATER(N,1) \
  53. ,a1 \
  54. ,BOOST_PP_IF(BOOST_PP_GREATER(N,2) \
  55. ,a2 \
  56. ,BOOST_PP_IF(BOOST_PP_GREATER(N,3) \
  57. ,a3 \
  58. ,BOOST_PP_EMPTY() \
  59. )))) \
  60. ); \
  61. } \
  62. } \
  63. } \
  64. /**/
  65. #define BOOST_SERIALIZATION_FACTORY_4(T, A0, A1, A2, A3) \
  66. BOOST_SERIALIZATION_FACTORY(4, T, A0, A1, A2, A3)
  67. #define BOOST_SERIALIZATION_FACTORY_3(T, A0, A1, A2) \
  68. BOOST_SERIALIZATION_FACTORY(3, T, A0, A1, A2, 0)
  69. #define BOOST_SERIALIZATION_FACTORY_2(T, A0, A1) \
  70. BOOST_SERIALIZATION_FACTORY(2, T, A0, A1, 0, 0)
  71. #define BOOST_SERIALIZATION_FACTORY_1(T, A0) \
  72. BOOST_SERIALIZATION_FACTORY(1, T, A0, 0, 0, 0)
  73. #define BOOST_SERIALIZATION_FACTORY_0(T) \
  74. namespace boost { \
  75. namespace serialization { \
  76. template<> \
  77. T * factory<T, 0>(std::va_list){ \
  78. return new T(); \
  79. } \
  80. } \
  81. } \
  82. /**/
  83. #endif // BOOST_SERIALIZATION_FACTORY_HPP