#include <bits/c++config.h>
#include <cstddef>
#include "tinfo.h"
#include "new" // for placement new
std::type_info::
~type_info ()
{ }
std::bad_cast::~bad_cast() throw() { }
std::bad_typeid::~bad_typeid() throw() { }
#if !__GXX_MERGED_TYPEINFO_NAMES
bool std::type_info::
operator== (const std::type_info& arg) const
{
return (&arg == this) || (__builtin_strcmp (name (), arg.name ()) == 0);
}
#endif
namespace std {
bool type_info::
__is_pointer_p () const
{
return false;
}
bool type_info::
__is_function_p () const
{
return false;
}
bool type_info::
__do_catch (const type_info *thr_type, void **, unsigned) const
{
return *this == *thr_type;
}
bool type_info::
__do_upcast (const abi::__class_type_info *, void **) const
{
return false;
}
}
namespace {
using namespace std;
using namespace abi;
struct vtable_prefix
{
ptrdiff_t whole_object;
#ifdef _GLIBCXX_VTABLE_PADDING
ptrdiff_t padding1;
#endif
const __class_type_info *whole_type;
#ifdef _GLIBCXX_VTABLE_PADDING
ptrdiff_t padding2;
#endif
const void *origin;
};
template <typename T>
inline const T *
adjust_pointer (const void *base, ptrdiff_t offset)
{
return reinterpret_cast <const T *>
(reinterpret_cast <const char *> (base) + offset);
}
inline void const *
convert_to_base (void const *addr, bool is_virtual, ptrdiff_t offset)
{
if (is_virtual)
{
const void *vtable = *static_cast <const void *const *> (addr);
offset = *adjust_pointer<ptrdiff_t> (vtable, offset);
}
return adjust_pointer<void> (addr, offset);
}
inline bool contained_p (__class_type_info::__sub_kind access_path)
{
return access_path >= __class_type_info::__contained_mask;
}
inline bool public_p (__class_type_info::__sub_kind access_path)
{
return access_path & __class_type_info::__contained_public_mask;
}
inline bool virtual_p (__class_type_info::__sub_kind access_path)
{
return (access_path & __class_type_info::__contained_virtual_mask);
}
inline bool contained_public_p (__class_type_info::__sub_kind access_path)
{
return ((access_path & __class_type_info::__contained_public)
== __class_type_info::__contained_public);
}
inline bool contained_nonpublic_p (__class_type_info::__sub_kind access_path)
{
return ((access_path & __class_type_info::__contained_public)
== __class_type_info::__contained_mask);
}
inline bool contained_nonvirtual_p (__class_type_info::__sub_kind access_path)
{
return ((access_path & (__class_type_info::__contained_mask
| __class_type_info::__contained_virtual_mask))
== __class_type_info::__contained_mask);
}
static const __class_type_info *const nonvirtual_base_type =
static_cast <const __class_type_info *> (0) + 1;
}
namespace __cxxabiv1
{
__class_type_info::
~__class_type_info ()
{}
__si_class_type_info::
~__si_class_type_info ()
{}
__vmi_class_type_info::
~__vmi_class_type_info ()
{}
struct __class_type_info::__upcast_result
{
const void *dst_ptr; __sub_kind part2dst; int src_details; const __class_type_info *base_type; __upcast_result (int d)
:dst_ptr (NULL), part2dst (__unknown), src_details (d), base_type (NULL)
{}
};
struct __class_type_info::__dyncast_result
{
const void *dst_ptr; __sub_kind whole2dst; __sub_kind whole2src; __sub_kind dst2src; int whole_details;
__dyncast_result (int details_ = __vmi_class_type_info::__flags_unknown_mask)
:dst_ptr (NULL), whole2dst (__unknown),
whole2src (__unknown), dst2src (__unknown),
whole_details (details_)
{}
protected:
__dyncast_result(const __dyncast_result&);
__dyncast_result&
operator=(const __dyncast_result&);
};
bool __class_type_info::
__do_catch (const type_info *thr_type,
void **thr_obj,
unsigned outer) const
{
if (*this == *thr_type)
return true;
if (outer >= 4)
return false;
return thr_type->__do_upcast (this, thr_obj);
}
bool __class_type_info::
__do_upcast (const __class_type_info *dst_type,
void **obj_ptr) const
{
__upcast_result result (__vmi_class_type_info::__flags_unknown_mask);
__do_upcast (dst_type, *obj_ptr, result);
if (!contained_public_p (result.part2dst))
return false;
*obj_ptr = const_cast <void *> (result.dst_ptr);
return true;
}
inline __class_type_info::__sub_kind __class_type_info::
__find_public_src (ptrdiff_t src2dst,
const void *obj_ptr,
const __class_type_info *src_type,
const void *src_ptr) const
{
if (src2dst >= 0)
return adjust_pointer <void> (obj_ptr, src2dst) == src_ptr
? __contained_public : __not_contained;
if (src2dst == -2)
return __not_contained;
return __do_find_public_src (src2dst, obj_ptr, src_type, src_ptr);
}
__class_type_info::__sub_kind __class_type_info::
__do_find_public_src (ptrdiff_t,
const void *obj_ptr,
const __class_type_info *,
const void *src_ptr) const
{
if (src_ptr == obj_ptr)
return __contained_public;
return __not_contained;
}
__class_type_info::__sub_kind __si_class_type_info::
__do_find_public_src (ptrdiff_t src2dst,
const void *obj_ptr,
const __class_type_info *src_type,
const void *src_ptr) const
{
if (src_ptr == obj_ptr && *this == *src_type)
return __contained_public;
return __base_type->__do_find_public_src (src2dst, obj_ptr, src_type, src_ptr);
}
__class_type_info::__sub_kind __vmi_class_type_info::
__do_find_public_src (ptrdiff_t src2dst,
const void *obj_ptr,
const __class_type_info *src_type,
const void *src_ptr) const
{
if (obj_ptr == src_ptr && *this == *src_type)
return __contained_public;
for (std::size_t i = __base_count; i--;)
{
if (!__base_info[i].__is_public_p ())
continue;
const void *base = obj_ptr;
ptrdiff_t offset = __base_info[i].__offset ();
bool is_virtual = __base_info[i].__is_virtual_p ();
if (is_virtual)
{
if (src2dst == -3)
continue; }
base = convert_to_base (base, is_virtual, offset);
__sub_kind base_kind = __base_info[i].__base_type->__do_find_public_src
(src2dst, base, src_type, src_ptr);
if (contained_p (base_kind))
{
if (is_virtual)
base_kind = __sub_kind (base_kind | __contained_virtual_mask);
return base_kind;
}
}
return __not_contained;
}
bool __class_type_info::
__do_dyncast (ptrdiff_t,
__sub_kind access_path,
const __class_type_info *dst_type,
const void *obj_ptr,
const __class_type_info *src_type,
const void *src_ptr,
__dyncast_result &__restrict result) const
{
if (obj_ptr == src_ptr && *this == *src_type)
{
result.whole2src = access_path;
return false;
}
if (*this == *dst_type)
{
result.dst_ptr = obj_ptr;
result.whole2dst = access_path;
result.dst2src = __not_contained;
return false;
}
return false;
}
bool __si_class_type_info::
__do_dyncast (ptrdiff_t src2dst,
__sub_kind access_path,
const __class_type_info *dst_type,
const void *obj_ptr,
const __class_type_info *src_type,
const void *src_ptr,
__dyncast_result &__restrict result) const
{
if (*this == *dst_type)
{
result.dst_ptr = obj_ptr;
result.whole2dst = access_path;
if (src2dst >= 0)
result.dst2src = adjust_pointer <void> (obj_ptr, src2dst) == src_ptr
? __contained_public : __not_contained;
else if (src2dst == -2)
result.dst2src = __not_contained;
return false;
}
if (obj_ptr == src_ptr && *this == *src_type)
{
result.whole2src = access_path;
return false;
}
return __base_type->__do_dyncast (src2dst, access_path, dst_type, obj_ptr,
src_type, src_ptr, result);
}
bool __vmi_class_type_info::
__do_dyncast (ptrdiff_t src2dst,
__sub_kind access_path,
const __class_type_info *dst_type,
const void *obj_ptr,
const __class_type_info *src_type,
const void *src_ptr,
__dyncast_result &__restrict result) const
{
if (result.whole_details & __flags_unknown_mask)
result.whole_details = __flags;
if (obj_ptr == src_ptr && *this == *src_type)
{
result.whole2src = access_path;
return false;
}
if (*this == *dst_type)
{
result.dst_ptr = obj_ptr;
result.whole2dst = access_path;
if (src2dst >= 0)
result.dst2src = adjust_pointer <void> (obj_ptr, src2dst) == src_ptr
? __contained_public : __not_contained;
else if (src2dst == -2)
result.dst2src = __not_contained;
return false;
}
bool result_ambig = false;
for (std::size_t i = __base_count; i--;)
{
__dyncast_result result2 (result.whole_details);
void const *base = obj_ptr;
__sub_kind base_access = access_path;
ptrdiff_t offset = __base_info[i].__offset ();
bool is_virtual = __base_info[i].__is_virtual_p ();
if (is_virtual)
base_access = __sub_kind (base_access | __contained_virtual_mask);
base = convert_to_base (base, is_virtual, offset);
if (!__base_info[i].__is_public_p ())
{
if (src2dst == -2 &&
!(result.whole_details
& (__non_diamond_repeat_mask | __diamond_shaped_mask)))
continue;
base_access = __sub_kind (base_access & ~__contained_public_mask);
}
bool result2_ambig
= __base_info[i].__base_type->__do_dyncast (src2dst, base_access,
dst_type, base,
src_type, src_ptr, result2);
result.whole2src = __sub_kind (result.whole2src | result2.whole2src);
if (result2.dst2src == __contained_public
|| result2.dst2src == __contained_ambig)
{
result.dst_ptr = result2.dst_ptr;
result.whole2dst = result2.whole2dst;
result.dst2src = result2.dst2src;
return result2_ambig;
}
if (!result_ambig && !result.dst_ptr)
{
result.dst_ptr = result2.dst_ptr;
result.whole2dst = result2.whole2dst;
result_ambig = result2_ambig;
if (result.dst_ptr && result.whole2src != __unknown
&& !(__flags & __non_diamond_repeat_mask))
return result_ambig;
}
else if (result.dst_ptr && result.dst_ptr == result2.dst_ptr)
{
result.whole2dst =
__sub_kind (result.whole2dst | result2.whole2dst);
}
else if ((result.dst_ptr != 0 & result2.dst_ptr != 0)
|| (result.dst_ptr != 0 & result2_ambig)
|| (result2.dst_ptr != 0 & result_ambig))
{
__sub_kind new_sub_kind = result2.dst2src;
__sub_kind old_sub_kind = result.dst2src;
if (contained_p (result.whole2src)
&& (!virtual_p (result.whole2src)
|| !(result.whole_details & __diamond_shaped_mask)))
{
if (old_sub_kind == __unknown)
old_sub_kind = __not_contained;
if (new_sub_kind == __unknown)
new_sub_kind = __not_contained;
}
else
{
if (old_sub_kind >= __not_contained)
; else if (contained_p (new_sub_kind)
&& (!virtual_p (new_sub_kind)
|| !(__flags & __diamond_shaped_mask)))
old_sub_kind = __not_contained;
else
old_sub_kind = dst_type->__find_public_src
(src2dst, result.dst_ptr, src_type, src_ptr);
if (new_sub_kind >= __not_contained)
; else if (contained_p (old_sub_kind)
&& (!virtual_p (old_sub_kind)
|| !(__flags & __diamond_shaped_mask)))
new_sub_kind = __not_contained;
else
new_sub_kind = dst_type->__find_public_src
(src2dst, result2.dst_ptr, src_type, src_ptr);
}
if (contained_p (__sub_kind (new_sub_kind ^ old_sub_kind)))
{
if (contained_p (new_sub_kind))
{
result.dst_ptr = result2.dst_ptr;
result.whole2dst = result2.whole2dst;
result_ambig = false;
old_sub_kind = new_sub_kind;
}
result.dst2src = old_sub_kind;
if (public_p (result.dst2src))
return false; if (!virtual_p (result.dst2src))
return false; }
else if (contained_p (__sub_kind (new_sub_kind & old_sub_kind)))
{
result.dst_ptr = NULL;
result.dst2src = __contained_ambig;
return true; }
else
{
result.dst_ptr = NULL;
result.dst2src = __not_contained;
result_ambig = true;
}
}
if (result.whole2src == __contained_private)
return result_ambig;
}
return result_ambig;
}
bool __class_type_info::
__do_upcast (const __class_type_info *dst, const void *obj,
__upcast_result &__restrict result) const
{
if (*this == *dst)
{
result.dst_ptr = obj;
result.base_type = nonvirtual_base_type;
result.part2dst = __contained_public;
return true;
}
return false;
}
bool __si_class_type_info::
__do_upcast (const __class_type_info *dst, const void *obj_ptr,
__upcast_result &__restrict result) const
{
if (__class_type_info::__do_upcast (dst, obj_ptr, result))
return true;
return __base_type->__do_upcast (dst, obj_ptr, result);
}
bool __vmi_class_type_info::
__do_upcast (const __class_type_info *dst, const void *obj_ptr,
__upcast_result &__restrict result) const
{
if (__class_type_info::__do_upcast (dst, obj_ptr, result))
return true;
int src_details = result.src_details;
if (src_details & __flags_unknown_mask)
src_details = __flags;
for (std::size_t i = __base_count; i--;)
{
__upcast_result result2 (src_details);
const void *base = obj_ptr;
ptrdiff_t offset = __base_info[i].__offset ();
bool is_virtual = __base_info[i].__is_virtual_p ();
bool is_public = __base_info[i].__is_public_p ();
if (!is_public && !(src_details & __non_diamond_repeat_mask))
continue;
if (base)
base = convert_to_base (base, is_virtual, offset);
if (__base_info[i].__base_type->__do_upcast (dst, base, result2))
{
if (result2.base_type == nonvirtual_base_type && is_virtual)
result2.base_type = __base_info[i].__base_type;
if (contained_p (result2.part2dst) && !is_public)
result2.part2dst = __sub_kind (result2.part2dst & ~__contained_public_mask);
if (!result.base_type)
{
result = result2;
if (!contained_p (result.part2dst))
return true;
if (result.part2dst & __contained_public_mask)
{
if (!(__flags & __non_diamond_repeat_mask))
return true; }
else
{
if (!virtual_p (result.part2dst))
return true; if (!(__flags & __diamond_shaped_mask))
return true; }
}
else if (result.dst_ptr != result2.dst_ptr)
{
result.dst_ptr = NULL;
result.part2dst = __contained_ambig;
return true;
}
else if (result.dst_ptr)
{
result.part2dst
= __sub_kind (result.part2dst | result2.part2dst);
}
else
{
if (result2.base_type == nonvirtual_base_type
|| result.base_type == nonvirtual_base_type
|| !(*result2.base_type == *result.base_type))
{
result.part2dst = __contained_ambig;
return true;
}
result.part2dst
= __sub_kind (result.part2dst | result2.part2dst);
}
}
}
return result.part2dst != __unknown;
}
extern "C" void *
__dynamic_cast (const void *src_ptr, const __class_type_info *src_type, const __class_type_info *dst_type, ptrdiff_t src2dst) {
const void *vtable = *static_cast <const void *const *> (src_ptr);
const vtable_prefix *prefix =
adjust_pointer <vtable_prefix> (vtable,
-offsetof (vtable_prefix, origin));
const void *whole_ptr =
adjust_pointer <void> (src_ptr, prefix->whole_object);
const __class_type_info *whole_type = prefix->whole_type;
__class_type_info::__dyncast_result result;
whole_type->__do_dyncast (src2dst, __class_type_info::__contained_public,
dst_type, whole_ptr, src_type, src_ptr, result);
if (!result.dst_ptr)
return NULL;
if (contained_public_p (result.dst2src))
return const_cast <void *> (result.dst_ptr);
if (contained_public_p (__class_type_info::__sub_kind (result.whole2src & result.whole2dst)))
return const_cast <void *> (result.dst_ptr);
if (contained_nonvirtual_p (result.whole2src))
return NULL;
if (result.dst2src == __class_type_info::__unknown)
result.dst2src = dst_type->__find_public_src (src2dst, result.dst_ptr,
src_type, src_ptr);
if (contained_public_p (result.dst2src))
return const_cast <void *> (result.dst_ptr);
return NULL;
}
}