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1 // Copyright (C) 1994-2020 Free Software Foundation, Inc.
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111
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2 //
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3 // This file is part of GCC.
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4 //
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5 // GCC is free software; you can redistribute it and/or modify
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6 // it under the terms of the GNU General Public License as published by
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7 // the Free Software Foundation; either version 3, or (at your option)
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8 // any later version.
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9
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10 // GCC is distributed in the hope that it will be useful,
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11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 // GNU General Public License for more details.
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14
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15 // Under Section 7 of GPL version 3, you are granted additional
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16 // permissions described in the GCC Runtime Library Exception, version
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17 // 3.1, as published by the Free Software Foundation.
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18
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19 // You should have received a copy of the GNU General Public License and
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20 // a copy of the GCC Runtime Library Exception along with this program;
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21 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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22 // <http://www.gnu.org/licenses/>.
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23
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24 #include "tinfo.h"
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25
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26 namespace __cxxabiv1 {
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27
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28 __si_class_type_info::
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29 ~__si_class_type_info ()
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30 {}
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31
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32 __class_type_info::__sub_kind __si_class_type_info::
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33 __do_find_public_src (ptrdiff_t src2dst,
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34 const void *obj_ptr,
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35 const __class_type_info *src_type,
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36 const void *src_ptr) const
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37 {
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38 if (src_ptr == obj_ptr && *this == *src_type)
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39 return __contained_public;
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40 return __base_type->__do_find_public_src (src2dst, obj_ptr, src_type, src_ptr);
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41 }
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42
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43 bool __si_class_type_info::
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44 __do_dyncast (ptrdiff_t src2dst,
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45 __sub_kind access_path,
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46 const __class_type_info *dst_type,
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47 const void *obj_ptr,
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48 const __class_type_info *src_type,
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49 const void *src_ptr,
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50 __dyncast_result &__restrict result) const
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51 {
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52 if (*this == *dst_type)
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53 {
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54 result.dst_ptr = obj_ptr;
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55 result.whole2dst = access_path;
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56 if (src2dst >= 0)
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57 result.dst2src = adjust_pointer <void> (obj_ptr, src2dst) == src_ptr
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58 ? __contained_public : __not_contained;
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59 else if (src2dst == -2)
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60 result.dst2src = __not_contained;
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61 return false;
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62 }
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63 if (obj_ptr == src_ptr && *this == *src_type)
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64 {
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65 // The src object we started from. Indicate how we are accessible from
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66 // the most derived object.
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67 result.whole2src = access_path;
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68 return false;
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69 }
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70 return __base_type->__do_dyncast (src2dst, access_path, dst_type, obj_ptr,
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71 src_type, src_ptr, result);
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72 }
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73
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74 bool __si_class_type_info::
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75 __do_upcast (const __class_type_info *dst, const void *obj_ptr,
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76 __upcast_result &__restrict result) const
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77 {
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78 if (__class_type_info::__do_upcast (dst, obj_ptr, result))
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79 return true;
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80
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81 return __base_type->__do_upcast (dst, obj_ptr, result);
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82 }
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83
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84 }
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