1// Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007,
2// 2009  Free Software Foundation
3//
4// This file is part of GCC.
5//
6// GCC is free software; you can redistribute it and/or modify
7// it under the terms of the GNU General Public License as published by
8// the Free Software Foundation; either version 3, or (at your option)
9// any later version.
10
11// GCC is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14// GNU General Public License for more details.
15
16// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
19
20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
23// <http://www.gnu.org/licenses/>.
24
25#include "tinfo.h"
26
27namespace __cxxabiv1 {
28
29__class_type_info::
30~__class_type_info ()
31{}
32
33bool __class_type_info::
34__do_catch (const type_info *thr_type,
35            void **thr_obj,
36            unsigned outer) const
37{
38  if (*this == *thr_type)
39    return true;
40  if (outer >= 4)
41    // Neither `A' nor `A *'.
42    return false;
43  return thr_type->__do_upcast (this, thr_obj);
44}
45
46bool __class_type_info::
47__do_upcast (const __class_type_info *dst_type,
48             void **obj_ptr) const
49{
50  __upcast_result result (__vmi_class_type_info::__flags_unknown_mask);
51
52  __do_upcast (dst_type, *obj_ptr, result);
53  if (!contained_public_p (result.part2dst))
54    return false;
55  *obj_ptr = const_cast <void *> (result.dst_ptr);
56  return true;
57}
58
59__class_type_info::__sub_kind __class_type_info::
60__do_find_public_src (ptrdiff_t,
61                      const void *obj_ptr,
62                      const __class_type_info *,
63                      const void *src_ptr) const
64{
65  if (src_ptr == obj_ptr)
66    // Must be our type, as the pointers match.
67    return __contained_public;
68  return __not_contained;
69}
70
71bool __class_type_info::
72__do_dyncast (ptrdiff_t,
73              __sub_kind access_path,
74              const __class_type_info *dst_type,
75              const void *obj_ptr,
76              const __class_type_info *src_type,
77              const void *src_ptr,
78              __dyncast_result &__restrict result) const
79{
80  if (obj_ptr == src_ptr && *this == *src_type)
81    {
82      // The src object we started from. Indicate how we are accessible from
83      // the most derived object.
84      result.whole2src = access_path;
85      return false;
86    }
87  if (*this == *dst_type)
88    {
89      result.dst_ptr = obj_ptr;
90      result.whole2dst = access_path;
91      result.dst2src = __not_contained;
92      return false;
93    }
94  return false;
95}
96
97bool __class_type_info::
98__do_upcast (const __class_type_info *dst, const void *obj,
99             __upcast_result &__restrict result) const
100{
101  if (*this == *dst)
102    {
103      result.dst_ptr = obj;
104      result.base_type = nonvirtual_base_type;
105      result.part2dst = __contained_public;
106      return true;
107    }
108  return false;
109}
110
111}
112