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1 | // Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007, |
2 | // 2009 Free Software Foundation | |
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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 | |
748086b7 | 8 | // the Free Software Foundation; either version 3, or (at your option) |
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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 | ||
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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. | |
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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/>. | |
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24 | |
25 | #include "tinfo.h" | |
26 | ||
27 | namespace __cxxabiv1 { | |
28 | ||
29 | __class_type_info:: | |
30 | ~__class_type_info () | |
31 | {} | |
32 | ||
33 | bool __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 | ||
46 | bool __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 | ||
71 | bool __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 | ||
97 | bool __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 | } |