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Refactor throw_with_nested. NFC.

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@300197 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2017-04-13 14:41:45 +00:00
parent d3b3b1f4a1
commit 9ac5bc5596
1 changed files with 39 additions and 31 deletions
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68
include/exception
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@@ -202,46 +202,54 @@ struct __nested
_LIBCPP_INLINE_VISIBILITY explicit __nested(const _Tp& __t) : _Tp(__t) {} _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
&& !__libcpp_is_final<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 #ifndef _LIBCPP_NO_EXCEPTIONS
throw __nested<typename remove_reference<_Tp>::type>(_VSTD::forward<_Tp>(__t)); template <class _Tp, class _Up, bool>
#else struct __throw_with_nested;
((void)__t);
// FIXME: Make this abort. template <class _Tp, class _Up>
struct __throw_with_nested<_Tp, _Up, true> {
_LIBCPP_NORETURN static inline _LIBCPP_ALWAYS_INLINE void
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
__do_throw(_Tp&& __t)
#else
__do_throw (_Tp& __t)
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
{
throw __nested<_Up>(_VSTD::forward<_Tp>(__t));
}
};
template <class _Tp, class _Up>
struct __throw_with_nested<_Tp, _Up, false> {
_LIBCPP_NORETURN static inline _LIBCPP_ALWAYS_INLINE void
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
__do_throw(_Tp&& __t)
#else
__do_throw (_Tp& __t)
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
{
throw _VSTD::forward<_Tp>(__t);
}
};
#endif #endif
}
template <class _Tp> template <class _Tp>
_LIBCPP_NORETURN _LIBCPP_NORETURN
void void
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
throw_with_nested(_Tp&& __t, typename enable_if< throw_with_nested(_Tp&& __t)
!is_class<typename remove_reference<_Tp>::type>::value || #else
is_base_of<nested_exception, typename remove_reference<_Tp>::type>::value throw_with_nested (_Tp& __t)
|| __libcpp_is_final<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 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
{ {
#ifndef _LIBCPP_NO_EXCEPTIONS #ifndef _LIBCPP_NO_EXCEPTIONS
throw _VSTD::forward<_Tp>(__t); typedef typename remove_reference<_Tp>::type _Up;
// static_assert( is_copy_constructible<_Up>::value, "");
__throw_with_nested<_Tp, _Up,
is_class<_Up>::value &&
!is_base_of<nested_exception, _Up>::value &&
!__libcpp_is_final<_Up>::value>::
__do_throw(_VSTD::forward<_Tp>(__t));
#else #else
((void)__t); ((void)__t);
// FIXME: Make this abort // FIXME: Make this abort