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1 // Methods for type_info for -*- C++ -*- Run Time Type Identification.
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145
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2 // Copyright (C) 1994-2020 Free Software Foundation, Inc.
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111
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3 //
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4 // This file is part of GCC.
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5 //
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6 // GCC is free software; you can redistribute it and/or modify
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7 // it under the terms of the GNU General Public License as published by
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8 // the Free Software Foundation; either version 3, or (at your option)
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9 // any later version.
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10
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11 // GCC is distributed in the hope that it will be useful,
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12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 // GNU General Public License for more details.
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15
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16 // Under Section 7 of GPL version 3, you are granted additional
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17 // permissions described in the GCC Runtime Library Exception, version
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18 // 3.1, as published by the Free Software Foundation.
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19
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20 // You should have received a copy of the GNU General Public License and
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21 // a copy of the GCC Runtime Library Exception along with this program;
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22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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23 // <http://www.gnu.org/licenses/>.
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24
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25 #include <bits/c++config.h>
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26 #include <cstddef>
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27 #include "tinfo.h"
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28
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29 std::type_info::
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30 ~type_info ()
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31 { }
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32
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33 #if !__GXX_TYPEINFO_EQUALITY_INLINE
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34
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35 // We can't rely on common symbols being shared between shared objects.
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36 bool std::type_info::
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37 operator== (const std::type_info& arg) const _GLIBCXX_NOEXCEPT
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38 {
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39 #if __GXX_MERGED_TYPEINFO_NAMES
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40 return name () == arg.name ();
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41 #else
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42 /* The name() method will strip any leading '*' prefix. Therefore
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43 take care to look at __name rather than name() when looking for
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44 the "pointer" prefix. */
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45 return (&arg == this)
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46 || (__name[0] != '*' && (__builtin_strcmp (name (), arg.name ()) == 0));
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47 #endif
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48 }
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49
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50 #endif
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51
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52 namespace std {
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53
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54 // return true if this is a type_info for a pointer type
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55 bool type_info::
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56 __is_pointer_p () const
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57 {
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58 return false;
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59 }
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60
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61 // return true if this is a type_info for a function type
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62 bool type_info::
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63 __is_function_p () const
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64 {
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65 return false;
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66 }
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67
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68 // try and catch a thrown object.
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69 bool type_info::
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70 __do_catch (const type_info *thr_type, void **, unsigned) const
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71 {
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72 return *this == *thr_type;
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73 }
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74
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75 // upcast from this type to the target. __class_type_info will override
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76 bool type_info::
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77 __do_upcast (const abi::__class_type_info *, void **) const
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78 {
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79 return false;
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80 }
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81
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82 }
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