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  1. // Copyright (C) 1994-2015 Free Software Foundation, Inc.
  2. //
  3. // This file is part of GCC.
  4. //
  5. // GCC is free software; you can redistribute it and/or modify
  6. // it under the terms of the GNU General Public License as published by
  7. // the Free Software Foundation; either version 3, or (at your option)
  8. // any later version.
  9.  
  10. // GCC is distributed in the hope that it will be useful,
  11. // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12. // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13. // GNU General Public License for more details.
  14.  
  15. // Under Section 7 of GPL version 3, you are granted additional
  16. // permissions described in the GCC Runtime Library Exception, version
  17. // 3.1, as published by the Free Software Foundation.
  18.  
  19. // You should have received a copy of the GNU General Public License and
  20. // a copy of the GCC Runtime Library Exception along with this program;
  21. // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  22. // <http://www.gnu.org/licenses/>.
  23.  
  24. #include "tinfo.h"
  25.  
  26. namespace __cxxabiv1 {
  27.  
  28. __class_type_info::
  29. ~__class_type_info ()
  30. {}
  31.  
  32. bool __class_type_info::
  33. __do_catch (const type_info *thr_type,
  34.             void **thr_obj,
  35.             unsigned outer) const
  36. {
  37.   if (*this == *thr_type)
  38.     return true;
  39.   if (outer >= 4)
  40.     // Neither `A' nor `A *'.
  41.     return false;
  42.   return thr_type->__do_upcast (this, thr_obj);
  43. }
  44.  
  45. bool __class_type_info::
  46. __do_upcast (const __class_type_info *dst_type,
  47.              void **obj_ptr) const
  48. {
  49.   __upcast_result result (__vmi_class_type_info::__flags_unknown_mask);
  50.  
  51.   __do_upcast (dst_type, *obj_ptr, result);
  52.   if (!contained_public_p (result.part2dst))
  53.     return false;
  54.   *obj_ptr = const_cast <void *> (result.dst_ptr);
  55.   return true;
  56. }
  57.  
  58. __class_type_info::__sub_kind __class_type_info::
  59. __do_find_public_src (ptrdiff_t,
  60.                       const void *obj_ptr,
  61.                       const __class_type_info *,
  62.                       const void *src_ptr) const
  63. {
  64.   if (src_ptr == obj_ptr)
  65.     // Must be our type, as the pointers match.
  66.     return __contained_public;
  67.   return __not_contained;
  68. }
  69.  
  70. bool __class_type_info::
  71. __do_dyncast (ptrdiff_t,
  72.               __sub_kind access_path,
  73.               const __class_type_info *dst_type,
  74.               const void *obj_ptr,
  75.               const __class_type_info *src_type,
  76.               const void *src_ptr,
  77.               __dyncast_result &__restrict result) const
  78. {
  79.   if (obj_ptr == src_ptr && *this == *src_type)
  80.     {
  81.       // The src object we started from. Indicate how we are accessible from
  82.       // the most derived object.
  83.       result.whole2src = access_path;
  84.       return false;
  85.     }
  86.   if (*this == *dst_type)
  87.     {
  88.       result.dst_ptr = obj_ptr;
  89.       result.whole2dst = access_path;
  90.       result.dst2src = __not_contained;
  91.       return false;
  92.     }
  93.   return false;
  94. }
  95.  
  96. bool __class_type_info::
  97. __do_upcast (const __class_type_info *dst, const void *obj,
  98.              __upcast_result &__restrict result) const
  99. {
  100.   if (*this == *dst)
  101.     {
  102.       result.dst_ptr = obj;
  103.       result.base_type = nonvirtual_base_type;
  104.       result.part2dst = __contained_public;
  105.       return true;
  106.     }
  107.   return false;
  108. }
  109.  
  110. }
  111.