1 // Copyright (C) 1994-2018 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 26 namespace __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 43 bool __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 74 bool __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