1 // Methods for type_info for -*- C++ -*- Run Time Type Identification.
2 // Copyright (C) 1994-2018 Free Software Foundation, Inc.
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 <bits/c++config.h>
26 #include <cstddef>
27 #include "tinfo.h"
28
29 std::type_info::
~type_info()30 ~type_info ()
31 { }
32
33 #if !__GXX_TYPEINFO_EQUALITY_INLINE
34
35 // We can't rely on common symbols being shared between shared objects.
36 bool std::type_info::
operator ==(const std::type_info & arg) const37 operator== (const std::type_info& arg) const _GLIBCXX_NOEXCEPT
38 {
39 #if __GXX_MERGED_TYPEINFO_NAMES
40 return name () == arg.name ();
41 #else
42 /* The name() method will strip any leading '*' prefix. Therefore
43 take care to look at __name rather than name() when looking for
44 the "pointer" prefix. */
45 return (&arg == this)
46 || (__name[0] != '*' && (__builtin_strcmp (name (), arg.name ()) == 0));
47 #endif
48 }
49
50 #endif
51
52 namespace std {
53
54 // return true if this is a type_info for a pointer type
55 bool type_info::
__is_pointer_p() const56 __is_pointer_p () const
57 {
58 return false;
59 }
60
61 // return true if this is a type_info for a function type
62 bool type_info::
__is_function_p() const63 __is_function_p () const
64 {
65 return false;
66 }
67
68 // try and catch a thrown object.
69 bool type_info::
__do_catch(const type_info * thr_type,void **,unsigned) const70 __do_catch (const type_info *thr_type, void **, unsigned) const
71 {
72 return *this == *thr_type;
73 }
74
75 // upcast from this type to the target. __class_type_info will override
76 bool type_info::
__do_upcast(const abi::__class_type_info *,void **) const77 __do_upcast (const abi::__class_type_info *, void **) const
78 {
79 return false;
80 }
81
82 }
83