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 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 } 112