diff options
Diffstat (limited to 'libstdc++-v3/libsupc++/pbase_type_info.cc')
-rw-r--r-- | libstdc++-v3/libsupc++/pbase_type_info.cc | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/libstdc++-v3/libsupc++/pbase_type_info.cc b/libstdc++-v3/libsupc++/pbase_type_info.cc new file mode 100644 index 000000000..f79d9e968 --- /dev/null +++ b/libstdc++-v3/libsupc++/pbase_type_info.cc @@ -0,0 +1,66 @@ +// Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007, +// 2009, 2010 +// Free Software Foundation +// +// This file is part of GCC. +// +// GCC is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation; either version 3, or (at your option) +// any later version. + +// GCC is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// Under Section 7 of GPL version 3, you are granted additional +// permissions described in the GCC Runtime Library Exception, version +// 3.1, as published by the Free Software Foundation. + +// You should have received a copy of the GNU General Public License and +// a copy of the GCC Runtime Library Exception along with this program; +// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +// <http://www.gnu.org/licenses/>. + +#include "tinfo.h" + +namespace __cxxabiv1 { + +__pbase_type_info:: +~__pbase_type_info () +{} + +bool __pbase_type_info:: +__do_catch (const type_info *thr_type, + void **thr_obj, + unsigned outer) const +{ + if (*this == *thr_type) + return true; // same type + +#ifdef __GXX_RTTI + if (typeid (*this) != typeid (*thr_type)) + return false; // not both same kind of pointers +#endif + + if (!(outer & 1)) + // We're not the same and our outer pointers are not all const qualified + // Therefore there must at least be a qualification conversion involved + // But for that to be valid, our outer pointers must be const qualified. + return false; + + const __pbase_type_info *thrown_type = + static_cast <const __pbase_type_info *> (thr_type); + + if (thrown_type->__flags & ~__flags) + // We're less qualified. + return false; + + if (!(__flags & __const_mask)) + outer &= ~1; + + return __pointer_catch (thrown_type, thr_obj, outer); +} + +} |