maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[libc++] Remove dead code and unneeded C++03 specializations from type_traits 

Reviewed By: ldionne, #libc

Spies: libcxx-commits

Differential Revision: https://reviews.llvm.org/D128906
This commit is contained in:
Nikolas Klauser 2022-06-30 14:11:26 +02:00
parent 3ee9a50a14
commit adc0f5b3a6
1 changed files with 0 additions and 101 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

101
libcxx/include/type_traits
View File

@ -529,28 +529,6 @@ _LIBCPP_BEGIN_NAMESPACE_STD
template <class _T1, class _T2> struct _LIBCPP_TEMPLATE_VIS pair;
template <class _Tp> struct _LIBCPP_TEMPLATE_VIS hash;
template <bool> struct _MetaBase;
template <>
struct _MetaBase<true> {
template <template <class...> class _FirstFn, template <class...> class, class ..._Args>
using _SelectApplyImpl _LIBCPP_NODEBUG = _FirstFn<_Args...>;
template <class _First, class...>
using _FirstImpl _LIBCPP_NODEBUG = _First;
template <class, class _Second, class...>
using _SecondImpl _LIBCPP_NODEBUG = _Second;
};
template <>
struct _MetaBase<false> {
template <template <class...> class, template <class...> class _SecondFn, class ..._Args>
using _SelectApplyImpl _LIBCPP_NODEBUG = _SecondFn<_Args...>;
};
template <class ..._Args>
using _FirstType _LIBCPP_NODEBUG = typename _MetaBase<(sizeof...(_Args) >= 1)>::template _FirstImpl<_Args...>;
template <class ..._Args>
using _SecondType _LIBCPP_NODEBUG = typename _MetaBase<(sizeof...(_Args) >= 2)>::template _SecondImpl<_Args...>;
template <template <class...> class _Func, class ..._Args>
struct _Lazy : _Func<_Args...> {};
@ -1372,91 +1350,12 @@ struct __is_implicitly_default_constructible<_Tp, decltype(__test_implicit_defau
#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS)
template <class _Callable> class _LIBCPP_DEPRECATED_IN_CXX17 result_of;
#ifndef _LIBCPP_CXX03_LANG
template <class _Fp, class ..._Args>
class _LIBCPP_TEMPLATE_VIS result_of<_Fp(_Args...)>
: public __invoke_of<_Fp, _Args...>
{
};
#else // C++03
template <class _Fn, bool, bool>
class __result_of
{
};
template <class _Fn, class ..._Args>
class __result_of<_Fn(_Args...), true, false>
{
public:
typedef decltype(declval<_Fn>()(declval<_Args>()...)) type;
};
template <class _MP, class _Tp, bool _IsMemberFunctionPtr>
struct __result_of_mp;
// member function pointer
template <class _MP, class _Tp>
struct __result_of_mp<_MP, _Tp, true>
{
using type = typename __member_pointer_traits<_MP>::_ReturnType;
};
// member data pointer
template <class _MP, class _Tp, bool>
struct __result_of_mdp;
template <class _Rp, class _Class, class _Tp>
struct __result_of_mdp<_Rp _Class::*, _Tp, false>
{
using type = typename __apply_cv<decltype(*declval<_Tp>()), _Rp>::type&;
};
template <class _Rp, class _Class, class _Tp>
struct __result_of_mdp<_Rp _Class::*, _Tp, true>
{
using type = typename __apply_cv<_Tp, _Rp>::type&;
};
template <class _Rp, class _Class, class _Tp>
struct __result_of_mp<_Rp _Class::*, _Tp, false>
: public __result_of_mdp<_Rp _Class::*, _Tp,
is_base_of<_Class, typename remove_reference<_Tp>::type>::value>
{
};
template <class _Fn, class _Tp>
class __result_of<_Fn(_Tp), false, true> // _Fn must be member pointer
: public __result_of_mp<typename remove_reference<_Fn>::type,
_Tp,
is_member_function_pointer<typename remove_reference<_Fn>::type>::value>
{
};
template <class _Fn, class _Tp, class ..._Args>
class __result_of<_Fn(_Tp, _Args...), false, true> // _Fn must be member pointer
: public __result_of_mp<typename remove_reference<_Fn>::type,
_Tp,
is_member_function_pointer<typename remove_reference<_Fn>::type>::value>
{
};
template <class _Fn, class ..._Args>
class _LIBCPP_TEMPLATE_VIS result_of<_Fn(_Args...)>
: public __result_of<_Fn(_Args...),
is_class<typename remove_reference<_Fn>::type>::value ||
is_function<typename remove_pointer<typename remove_reference<_Fn>::type>::type>::value,
is_member_pointer<typename remove_reference<_Fn>::type>::value
>
{
};
#endif // C++03
#if _LIBCPP_STD_VER > 11
template <class _Tp> using result_of_t _LIBCPP_DEPRECATED_IN_CXX17 = typename result_of<_Tp>::type;
#endif // _LIBCPP_STD_VER > 11