#ifndef _LIBCPP_EXCEPTION
#define _LIBCPP_EXCEPTION
#include <__config>
#include <cstddef>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
namespace std {
class _LIBCPP_EXCEPTION_ABI exception
{
public:
_LIBCPP_INLINE_VISIBILITY exception() _NOEXCEPT {}
virtual ~exception() _NOEXCEPT;
virtual const char* what() const _NOEXCEPT;
};
class _LIBCPP_EXCEPTION_ABI bad_exception
: public exception
{
public:
_LIBCPP_INLINE_VISIBILITY bad_exception() _NOEXCEPT {}
virtual ~bad_exception() _NOEXCEPT;
virtual const char* what() const _NOEXCEPT;
};
typedef void (*unexpected_handler)();
_LIBCPP_VISIBLE unexpected_handler set_unexpected(unexpected_handler) _NOEXCEPT;
_LIBCPP_VISIBLE unexpected_handler get_unexpected() _NOEXCEPT;
_LIBCPP_NORETURN _LIBCPP_VISIBLE void unexpected();
typedef void (*terminate_handler)();
_LIBCPP_VISIBLE terminate_handler set_terminate(terminate_handler) _NOEXCEPT;
_LIBCPP_VISIBLE terminate_handler get_terminate() _NOEXCEPT;
_LIBCPP_NORETURN _LIBCPP_VISIBLE void terminate() _NOEXCEPT;
_LIBCPP_VISIBLE bool uncaught_exception() _NOEXCEPT;
class _LIBCPP_VISIBLE exception_ptr;
exception_ptr current_exception() _NOEXCEPT;
_LIBCPP_NORETURN void rethrow_exception(exception_ptr);
class _LIBCPP_VISIBLE exception_ptr
{
void* __ptr_;
public:
_LIBCPP_INLINE_VISIBILITY exception_ptr() _NOEXCEPT : __ptr_() {}
_LIBCPP_INLINE_VISIBILITY exception_ptr(nullptr_t) _NOEXCEPT : __ptr_() {}
exception_ptr(const exception_ptr&) _NOEXCEPT;
exception_ptr& operator=(const exception_ptr&) _NOEXCEPT;
~exception_ptr() _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_EXPLICIT
operator bool() const _NOEXCEPT {return __ptr_ != nullptr;}
friend _LIBCPP_INLINE_VISIBILITY
bool operator==(const exception_ptr& __x, const exception_ptr& __y) _NOEXCEPT
{return __x.__ptr_ == __y.__ptr_;}
friend _LIBCPP_INLINE_VISIBILITY
bool operator!=(const exception_ptr& __x, const exception_ptr& __y) _NOEXCEPT
{return !(__x == __y);}
friend exception_ptr current_exception() _NOEXCEPT;
_LIBCPP_NORETURN friend void rethrow_exception(exception_ptr);
};
template<class _Ep>
exception_ptr
make_exception_ptr(_Ep __e) _NOEXCEPT
{
#ifndef _LIBCPP_NO_EXCEPTIONS
try
{
throw __e;
}
catch (...)
{
return current_exception();
}
#endif // _LIBCPP_NO_EXCEPTIONS
}
class _LIBCPP_EXCEPTION_ABI nested_exception
{
exception_ptr __ptr_;
public:
nested_exception() _NOEXCEPT;
virtual ~nested_exception() _NOEXCEPT;
_LIBCPP_NORETURN void rethrow_nested() const;
_LIBCPP_INLINE_VISIBILITY exception_ptr nested_ptr() const _NOEXCEPT {return __ptr_;}
};
template <class _Tp>
struct __nested
: public _Tp,
public nested_exception
{
_LIBCPP_INLINE_VISIBILITY explicit __nested(const _Tp& __t) : _Tp(__t) {}
};
template <class _Tp>
_LIBCPP_NORETURN
void
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
throw_with_nested(_Tp&& __t, typename enable_if<
is_class<typename remove_reference<_Tp>::type>::value &&
!is_base_of<nested_exception, typename remove_reference<_Tp>::type>::value
>::type* = 0)
#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
throw_with_nested (_Tp& __t, typename enable_if<
is_class<_Tp>::value && !is_base_of<nested_exception, _Tp>::value
>::type* = 0)
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
{
#ifndef _LIBCPP_NO_EXCEPTIONS
throw __nested<typename remove_reference<_Tp>::type>(_VSTD::forward<_Tp>(__t));
#endif
}
template <class _Tp>
_LIBCPP_NORETURN
void
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
throw_with_nested(_Tp&& __t, typename enable_if<
!is_class<typename remove_reference<_Tp>::type>::value ||
is_base_of<nested_exception, typename remove_reference<_Tp>::type>::value
>::type* = 0)
#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
throw_with_nested (_Tp& __t, typename enable_if<
!is_class<_Tp>::value || is_base_of<nested_exception, _Tp>::value
>::type* = 0)
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
{
#ifndef _LIBCPP_NO_EXCEPTIONS
throw _VSTD::forward<_Tp>(__t);
#endif
}
template <class _Ep>
inline _LIBCPP_INLINE_VISIBILITY
void
rethrow_if_nested(const _Ep& __e, typename enable_if<
is_polymorphic<_Ep>::value
>::type* = 0)
{
const nested_exception* __nep = dynamic_cast<const nested_exception*>(&__e);
if (__nep)
__nep->rethrow_nested();
}
template <class _Ep>
inline _LIBCPP_INLINE_VISIBILITY
void
rethrow_if_nested(const _Ep&, typename enable_if<
!is_polymorphic<_Ep>::value
>::type* = 0)
{
}
}
#endif // _LIBCPP_EXCEPTION