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  1. // Methods for type_info for -*- C++ -*- Run Time Type Identification.
  2. // Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
  3. // 2003, 2004, 2005, 2006, 2007, 2009
  4. // Free Software Foundation
  5. //
  6. // This file is part of GCC.
  7. //
  8. // GCC is free software; you can redistribute it and/or modify
  9. // it under the terms of the GNU General Public License as published by
  10. // the Free Software Foundation; either version 3, or (at your option)
  11. // any later version.
  12.  
  13. // GCC is distributed in the hope that it will be useful,
  14. // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16. // GNU General Public License for more details.
  17.  
  18. // Under Section 7 of GPL version 3, you are granted additional
  19. // permissions described in the GCC Runtime Library Exception, version
  20. // 3.1, as published by the Free Software Foundation.
  21.  
  22. // You should have received a copy of the GNU General Public License and
  23. // a copy of the GCC Runtime Library Exception along with this program;
  24. // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  25. // <http://www.gnu.org/licenses/>.
  26.  
  27. #include <bits/c++config.h>
  28. #include <cstddef>
  29. #include "tinfo.h"
  30.  
  31. std::type_info::
  32. ~type_info ()
  33. { }
  34.  
  35. #if !__GXX_TYPEINFO_EQUALITY_INLINE
  36.  
  37. // We can't rely on common symbols being shared between shared objects.
  38. bool std::type_info::
  39. operator== (const std::type_info& arg) const
  40. {
  41. #if __GXX_MERGED_TYPEINFO_NAMES
  42.   return name () == arg.name ();
  43. #else
  44.   /* The name() method will strip any leading '*' prefix. Therefore
  45.      take care to look at __name rather than name() when looking for
  46.      the "pointer" prefix.  */
  47.   return (&arg == this)
  48.     || (__name[0] != '*' && (__builtin_strcmp (name (), arg.name ()) == 0));
  49. #endif
  50. }
  51.  
  52. #endif
  53.  
  54. namespace std {
  55.  
  56. // return true if this is a type_info for a pointer type
  57. bool type_info::
  58. __is_pointer_p () const
  59. {
  60.   return false;
  61. }
  62.  
  63. // return true if this is a type_info for a function type
  64. bool type_info::
  65. __is_function_p () const
  66. {
  67.   return false;
  68. }
  69.  
  70. // try and catch a thrown object.
  71. bool type_info::
  72. __do_catch (const type_info *thr_type, void **, unsigned) const
  73. {
  74.   return *this == *thr_type;
  75. }
  76.  
  77. // upcast from this type to the target. __class_type_info will override
  78. bool type_info::
  79. __do_upcast (const abi::__class_type_info *, void **) const
  80. {
  81.   return false;
  82. }
  83.  
  84. }
  85.