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