mirror of
https://github.com/darlinghq/darling-libcxx.git
synced 2024-11-24 04:19:48 +00:00
f048fe3a09
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119906 91177308-0d34-0410-b5e6-96231b3b80d8
267 lines
8.7 KiB
C++
267 lines
8.7 KiB
C++
// -*- C++ -*-
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef _LIBCPP___TUPLE
|
|
#define _LIBCPP___TUPLE
|
|
|
|
#include <__config>
|
|
#include <cstddef>
|
|
#include <type_traits>
|
|
|
|
#pragma GCC system_header
|
|
|
|
#ifdef _LIBCPP_HAS_NO_VARIADICS
|
|
|
|
#include <__tuple_03>
|
|
|
|
#else // _LIBCPP_HAS_NO_VARIADICS
|
|
|
|
_LIBCPP_BEGIN_NAMESPACE_STD
|
|
|
|
template <class _Tp> class _LIBCPP_VISIBLE tuple_size;
|
|
|
|
template <class _Tp>
|
|
class _LIBCPP_VISIBLE tuple_size<const _Tp>
|
|
: public tuple_size<_Tp> {};
|
|
|
|
template <class _Tp>
|
|
class _LIBCPP_VISIBLE tuple_size<volatile _Tp>
|
|
: public tuple_size<_Tp> {};
|
|
|
|
template <class _Tp>
|
|
class _LIBCPP_VISIBLE tuple_size<const volatile _Tp>
|
|
: public tuple_size<_Tp> {};
|
|
|
|
template <size_t _Ip, class _Tp> class _LIBCPP_VISIBLE tuple_element;
|
|
|
|
template <size_t _Ip, class _Tp>
|
|
class _LIBCPP_VISIBLE tuple_element<_Ip, const _Tp>
|
|
{
|
|
public:
|
|
typedef typename add_const<typename tuple_element<_Ip, _Tp>::type>::type type;
|
|
};
|
|
|
|
template <size_t _Ip, class _Tp>
|
|
class _LIBCPP_VISIBLE tuple_element<_Ip, volatile _Tp>
|
|
{
|
|
public:
|
|
typedef typename add_volatile<typename tuple_element<_Ip, _Tp>::type>::type type;
|
|
};
|
|
|
|
template <size_t _Ip, class _Tp>
|
|
class _LIBCPP_VISIBLE tuple_element<_Ip, const volatile _Tp>
|
|
{
|
|
public:
|
|
typedef typename add_cv<typename tuple_element<_Ip, _Tp>::type>::type type;
|
|
};
|
|
|
|
template <class ..._Tp> class _LIBCPP_VISIBLE tuple;
|
|
template <class _T1, class _T2> class _LIBCPP_VISIBLE pair;
|
|
template <class _Tp, size_t _Size> struct _LIBCPP_VISIBLE array;
|
|
|
|
template <class _Tp> struct __tuple_like : false_type {};
|
|
|
|
template <class... _Tp> struct __tuple_like<tuple<_Tp...>> : true_type {};
|
|
template <class... _Tp> struct __tuple_like<const tuple<_Tp...>> : true_type {};
|
|
template <class _T1, class _T2> struct __tuple_like<pair<_T1, _T2> > : true_type {};
|
|
template <class _T1, class _T2> struct __tuple_like<const pair<_T1, _T2> > : true_type {};
|
|
template <class _Tp, size_t _Size> struct __tuple_like<array<_Tp, _Size> > : true_type {};
|
|
template <class _Tp, size_t _Size> struct __tuple_like<const array<_Tp, _Size> > : true_type {};
|
|
|
|
template <size_t _Ip, class ..._Tp>
|
|
typename tuple_element<_Ip, tuple<_Tp...>>::type&
|
|
get(tuple<_Tp...>&);
|
|
|
|
template <size_t _Ip, class ..._Tp>
|
|
const typename tuple_element<_Ip, tuple<_Tp...>>::type&
|
|
get(const tuple<_Tp...>&);
|
|
|
|
template <size_t _Ip, class ..._Tp>
|
|
typename tuple_element<_Ip, tuple<_Tp...>>::type&&
|
|
get(tuple<_Tp...>&&);
|
|
|
|
template <size_t _Ip, class _T1, class _T2>
|
|
typename tuple_element<_Ip, pair<_T1, _T2> >::type&
|
|
get(pair<_T1, _T2>&);
|
|
|
|
template <size_t _Ip, class _T1, class _T2>
|
|
const typename tuple_element<_Ip, pair<_T1, _T2> >::type&
|
|
get(const pair<_T1, _T2>&);
|
|
|
|
template <size_t _Ip, class _T1, class _T2>
|
|
typename tuple_element<_Ip, pair<_T1, _T2> >::type&&
|
|
get(pair<_T1, _T2>&&);
|
|
|
|
template <size_t _Ip, class _Tp, size_t _Size>
|
|
_Tp&
|
|
get(array<_Tp, _Size>&);
|
|
|
|
template <size_t _Ip, class _Tp, size_t _Size>
|
|
const _Tp&
|
|
get(const array<_Tp, _Size>&);
|
|
|
|
template <size_t _Ip, class _Tp, size_t _Size>
|
|
_Tp&&
|
|
get(array<_Tp, _Size>&&);
|
|
|
|
// __make_tuple_indices
|
|
|
|
template <size_t...> struct __tuple_indices {};
|
|
|
|
template <size_t _Sp, class _IntTuple, size_t _Ep>
|
|
struct __make_indices_imp;
|
|
|
|
template <size_t _Sp, size_t ..._Indices, size_t _Ep>
|
|
struct __make_indices_imp<_Sp, __tuple_indices<_Indices...>, _Ep>
|
|
{
|
|
typedef typename __make_indices_imp<_Sp+1, __tuple_indices<_Indices..., _Sp>, _Ep>::type type;
|
|
};
|
|
|
|
template <size_t _Ep, size_t ..._Indices>
|
|
struct __make_indices_imp<_Ep, __tuple_indices<_Indices...>, _Ep>
|
|
{
|
|
typedef __tuple_indices<_Indices...> type;
|
|
};
|
|
|
|
template <size_t _Ep, size_t _Sp = 0>
|
|
struct __make_tuple_indices
|
|
{
|
|
static_assert(_Sp <= _Ep, "__make_tuple_indices input error");
|
|
typedef typename __make_indices_imp<_Sp, __tuple_indices<>, _Ep>::type type;
|
|
};
|
|
|
|
// __tuple_types
|
|
|
|
template <class ..._Tp> struct __tuple_types {};
|
|
|
|
template <size_t _Ip>
|
|
class _LIBCPP_VISIBLE tuple_element<_Ip, __tuple_types<>>
|
|
{
|
|
public:
|
|
static_assert(_Ip == 0, "tuple_element index out of range");
|
|
static_assert(_Ip != 0, "tuple_element index out of range");
|
|
};
|
|
|
|
template <class _Hp, class ..._Tp>
|
|
class _LIBCPP_VISIBLE tuple_element<0, __tuple_types<_Hp, _Tp...>>
|
|
{
|
|
public:
|
|
typedef _Hp type;
|
|
};
|
|
|
|
template <size_t _Ip, class _Hp, class ..._Tp>
|
|
class _LIBCPP_VISIBLE tuple_element<_Ip, __tuple_types<_Hp, _Tp...>>
|
|
{
|
|
public:
|
|
typedef typename tuple_element<_Ip-1, __tuple_types<_Tp...>>::type type;
|
|
};
|
|
|
|
template <class ..._Tp>
|
|
class _LIBCPP_VISIBLE tuple_size<__tuple_types<_Tp...>>
|
|
: public integral_constant<size_t, sizeof...(_Tp)>
|
|
{
|
|
};
|
|
|
|
template <class... _Tp> struct __tuple_like<__tuple_types<_Tp...>> : true_type {};
|
|
|
|
// __make_tuple_types
|
|
|
|
// __make_tuple_types<_Tuple<_Types...>, _Ep, _Sp>::type is a
|
|
// __tuple_types<_Types...> using only those _Types in the range [_Sp, _Ep).
|
|
// _Sp defaults to 0 and _Ep defaults to tuple_size<_Tuple>. If _Tuple is a
|
|
// lvalue_reference type, then __tuple_types<_Types&...> is the result.
|
|
|
|
template <class _TupleTypes, class _Tp, size_t _Sp, size_t _Ep>
|
|
struct __make_tuple_types_imp;
|
|
|
|
template <class ..._Types, class _Tp, size_t _Sp, size_t _Ep>
|
|
struct __make_tuple_types_imp<__tuple_types<_Types...>, _Tp, _Sp, _Ep>
|
|
{
|
|
typedef typename remove_reference<_Tp>::type _Tpr;
|
|
typedef typename __make_tuple_types_imp<__tuple_types<_Types...,
|
|
typename conditional<is_lvalue_reference<_Tp>::value,
|
|
typename tuple_element<_Sp, _Tpr>::type&,
|
|
typename tuple_element<_Sp, _Tpr>::type>::type>,
|
|
_Tp, _Sp+1, _Ep>::type type;
|
|
};
|
|
|
|
template <class ..._Types, class _Tp, size_t _Ep>
|
|
struct __make_tuple_types_imp<__tuple_types<_Types...>, _Tp, _Ep, _Ep>
|
|
{
|
|
typedef __tuple_types<_Types...> type;
|
|
};
|
|
|
|
template <class _Tp, size_t _Ep = tuple_size<typename remove_reference<_Tp>::type>::value, size_t _Sp = 0>
|
|
struct __make_tuple_types
|
|
{
|
|
static_assert(_Sp <= _Ep, "__make_tuple_types input error");
|
|
typedef typename __make_tuple_types_imp<__tuple_types<>, _Tp, _Sp, _Ep>::type type;
|
|
};
|
|
|
|
// __tuple_convertible
|
|
|
|
template <bool, class _Tp, class _Up>
|
|
struct __tuple_convertible_imp : public false_type {};
|
|
|
|
template <class _Tp0, class ..._Tp, class _Up0, class ..._Up>
|
|
struct __tuple_convertible_imp<true, __tuple_types<_Tp0, _Tp...>, __tuple_types<_Up0, _Up...>>
|
|
: public integral_constant<bool,
|
|
is_convertible<_Tp0, _Up0>::value &&
|
|
__tuple_convertible_imp<true, __tuple_types<_Tp...>, __tuple_types<_Up...>>::value> {};
|
|
|
|
template <>
|
|
struct __tuple_convertible_imp<true, __tuple_types<>, __tuple_types<>>
|
|
: public true_type {};
|
|
|
|
template <class _Tp, class _Up, bool = __tuple_like<typename remove_reference<_Tp>::type>::value,
|
|
bool = __tuple_like<_Up>::value>
|
|
struct __tuple_convertible
|
|
: public false_type {};
|
|
|
|
template <class _Tp, class _Up>
|
|
struct __tuple_convertible<_Tp, _Up, true, true>
|
|
: public __tuple_convertible_imp<tuple_size<typename remove_reference<_Tp>::type>::value ==
|
|
tuple_size<_Up>::value,
|
|
typename __make_tuple_types<_Tp>::type, typename __make_tuple_types<_Up>::type>
|
|
{};
|
|
|
|
// __tuple_assignable
|
|
|
|
template <bool, class _Tp, class _Up>
|
|
struct __tuple_assignable_imp : public false_type {};
|
|
|
|
template <class _Tp0, class ..._Tp, class _Up0, class ..._Up>
|
|
struct __tuple_assignable_imp<true, __tuple_types<_Tp0, _Tp...>, __tuple_types<_Up0, _Up...>>
|
|
: public integral_constant<bool,
|
|
is_assignable<_Up0&, _Tp0>::value &&
|
|
__tuple_assignable_imp<true, __tuple_types<_Tp...>, __tuple_types<_Up...>>::value> {};
|
|
|
|
template <>
|
|
struct __tuple_assignable_imp<true, __tuple_types<>, __tuple_types<>>
|
|
: public true_type {};
|
|
|
|
template <class _Tp, class _Up, bool = __tuple_like<typename remove_reference<_Tp>::type>::value,
|
|
bool = __tuple_like<_Up>::value>
|
|
struct __tuple_assignable
|
|
: public false_type {};
|
|
|
|
template <class _Tp, class _Up>
|
|
struct __tuple_assignable<_Tp, _Up, true, true>
|
|
: public __tuple_assignable_imp<tuple_size<typename remove_reference<_Tp>::type>::value ==
|
|
tuple_size<_Up>::value,
|
|
typename __make_tuple_types<_Tp>::type, typename __make_tuple_types<_Up>::type>
|
|
{};
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
#endif // _LIBCPP_HAS_NO_VARIADICS
|
|
|
|
#endif // _LIBCPP___TUPLE
|