1// Copyright (C) 1994-2017 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
26namespace __cxxabiv1 {
27
28__si_class_type_info::
29~__si_class_type_info ()
30{}
31
32__class_type_info::__sub_kind __si_class_type_info::
33__do_find_public_src (ptrdiff_t src2dst,
34 const void *obj_ptr,
35 const __class_type_info *src_type,
36 const void *src_ptr) const
37{
38 if (src_ptr == obj_ptr && *this == *src_type)
39 return __contained_public;
40 return __base_type->__do_find_public_src (src2dst, obj_ptr, src_type, src_ptr);
41}
42
43bool __si_class_type_info::
44__do_dyncast (ptrdiff_t src2dst,
45 __sub_kind access_path,
46 const __class_type_info *dst_type,
47 const void *obj_ptr,
48 const __class_type_info *src_type,
49 const void *src_ptr,
50 __dyncast_result &__restrict result) const
51{
52 if (*this == *dst_type)
53 {
54 result.dst_ptr = obj_ptr;
55 result.whole2dst = access_path;
56 if (src2dst >= 0)
57 result.dst2src = adjust_pointer <void> (obj_ptr, src2dst) == src_ptr
58 ? __contained_public : __not_contained;
59 else if (src2dst == -2)
60 result.dst2src = __not_contained;
61 return false;
62 }
63 if (obj_ptr == src_ptr && *this == *src_type)
64 {
65 // The src object we started from. Indicate how we are accessible from
66 // the most derived object.
67 result.whole2src = access_path;
68 return false;
69 }
70 return __base_type->__do_dyncast (src2dst, access_path, dst_type, obj_ptr,
71 src_type, src_ptr, result);
72}
73
74bool __si_class_type_info::
75__do_upcast (const __class_type_info *dst, const void *obj_ptr,
76 __upcast_result &__restrict result) const
77{
78 if (__class_type_info::__do_upcast (dst, obj_ptr, result))
79 return true;
80
81 return __base_type->__do_upcast (dst, obj_ptr, result);
82}
83
84}
85