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Make std::get constexpr

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@186525 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2013-07-17 18:25:36 +00:00
parent f7777e8554
commit 8fc4f5a251
12 changed files with 299 additions and 51 deletions
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18
include/__tuple
View File

@@ -79,47 +79,47 @@ template <class _T1, class _T2> struct __tuple_like<pair<_T1, _T2> > : true_type
template <class _Tp, size_t _Size> struct __tuple_like<array<_Tp, _Size> > : true_type {};
template <size_t _Ip, class ..._Tp>
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
typename tuple_element<_Ip, tuple<_Tp...> >::type&
get(tuple<_Tp...>&) _NOEXCEPT;
template <size_t _Ip, class ..._Tp>
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
const typename tuple_element<_Ip, tuple<_Tp...> >::type&
get(const tuple<_Tp...>&) _NOEXCEPT;
template <size_t _Ip, class ..._Tp>
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
typename tuple_element<_Ip, tuple<_Tp...> >::type&&
get(tuple<_Tp...>&&) _NOEXCEPT;
template <size_t _Ip, class _T1, class _T2>
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
typename tuple_element<_Ip, pair<_T1, _T2> >::type&
get(pair<_T1, _T2>&) _NOEXCEPT;
template <size_t _Ip, class _T1, class _T2>
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
const typename tuple_element<_Ip, pair<_T1, _T2> >::type&
get(const pair<_T1, _T2>&) _NOEXCEPT;
template <size_t _Ip, class _T1, class _T2>
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
typename tuple_element<_Ip, pair<_T1, _T2> >::type&&
get(pair<_T1, _T2>&&) _NOEXCEPT;
template <size_t _Ip, class _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_Tp&
get(array<_Tp, _Size>&) _NOEXCEPT;
template <size_t _Ip, class _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
const _Tp&
get(const array<_Tp, _Size>&) _NOEXCEPT;
template <size_t _Ip, class _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_Tp&&
get(array<_Tp, _Size>&&) _NOEXCEPT;

35
include/array
View File

@@ -59,14 +59,14 @@ struct array
// element access:
reference operator[](size_type n);
const_reference operator[](size_type n) const;
const_reference at(size_type n) const;
const_reference operator[](size_type n) const; // constexpr in C++14
const_reference at(size_type n) const; // constexpr in C++14
reference at(size_type n);
reference front();
const_reference front() const;
const_reference front() const; // constexpr in C++14
reference back();
const_reference back() const;
const_reference back() const; // constexpr in C++14
T* data() noexcept;
const T* data() const noexcept;
@@ -92,9 +92,9 @@ template <class T> class tuple_size;
template <int I, class T> class tuple_element;
template <class T, size_t N> struct tuple_size<array<T, N>>;
template <int I, class T, size_t N> struct tuple_element<I, array<T, N>>;
template <int I, class T, size_t N> T& get(array<T, N>&) noexcept;
template <int I, class T, size_t N> const T& get(const array<T, N>&) noexcept;
template <int I, class T, size_t N> T&& get(array<T, N>&&) noexcept;
template <int I, class T, size_t N> T& get(array<T, N>&) noexcept; // constexpr in C++14
template <int I, class T, size_t N> const T& get(const array<T, N>&) noexcept; // constexpr in C++14
template <int I, class T, size_t N> T&& get(array<T, N>&&) noexcept; // constexpr in C++14
} // std
@@ -181,14 +181,14 @@ struct _LIBCPP_TYPE_VIS array
// element access:
_LIBCPP_INLINE_VISIBILITY reference operator[](size_type __n) {return __elems_[__n];}
_LIBCPP_INLINE_VISIBILITY const_reference operator[](size_type __n) const {return __elems_[__n];}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 const_reference operator[](size_type __n) const {return __elems_[__n];}
reference at(size_type __n);
const_reference at(size_type __n) const;
_LIBCPP_CONSTEXPR_AFTER_CXX11 const_reference at(size_type __n) const;
_LIBCPP_INLINE_VISIBILITY reference front() {return __elems_[0];}
_LIBCPP_INLINE_VISIBILITY const_reference front() const {return __elems_[0];}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 const_reference front() const {return __elems_[0];}
_LIBCPP_INLINE_VISIBILITY reference back() {return __elems_[_Size > 0 ? _Size-1 : 0];}
_LIBCPP_INLINE_VISIBILITY const_reference back() const {return __elems_[_Size > 0 ? _Size-1 : 0];}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 const_reference back() const {return __elems_[_Size > 0 ? _Size-1 : 0];}
_LIBCPP_INLINE_VISIBILITY
value_type* data() _NOEXCEPT {return __elems_;}
@@ -210,6 +210,7 @@ array<_Tp, _Size>::at(size_type __n)
}
template <class _Tp, size_t _Size>
_LIBCPP_CONSTEXPR_AFTER_CXX11
typename array<_Tp, _Size>::const_reference
array<_Tp, _Size>::at(size_type __n) const
{
@@ -306,32 +307,32 @@ public:
};
template <size_t _Ip, class _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY inline
_LIBCPP_INLINE_VISIBILITY inline _LIBCPP_CONSTEXPR_AFTER_CXX11
_Tp&
get(array<_Tp, _Size>& __a) _NOEXCEPT
{
static_assert(_Ip < _Size, "Index out of bounds in std::get<> (std::array)");
return __a[_Ip];
return __a.__elems_[_Ip];
}
template <size_t _Ip, class _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY inline
_LIBCPP_INLINE_VISIBILITY inline _LIBCPP_CONSTEXPR_AFTER_CXX11
const _Tp&
get(const array<_Tp, _Size>& __a) _NOEXCEPT
{
static_assert(_Ip < _Size, "Index out of bounds in std::get<> (const std::array)");
return __a[_Ip];
return __a.__elems_[_Ip];
}
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
template <size_t _Ip, class _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY inline
_LIBCPP_INLINE_VISIBILITY inline _LIBCPP_CONSTEXPR_AFTER_CXX11
_Tp&&
get(array<_Tp, _Size>&& __a) _NOEXCEPT
{
static_assert(_Ip < _Size, "Index out of bounds in std::get<> (std::array &&)");
return _VSTD::move(__a[_Ip]);
return _VSTD::move(__a.__elems_[_Ip]);
}
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES

18
include/tuple
View File

@@ -86,13 +86,13 @@ template <intsize_t I, class... T> class tuple_element<I, tuple<T...>>;
// 20.4.1.5, element access:
template <intsize_t I, class... T>
typename tuple_element<I, tuple<T...>>::type&
get(tuple<T...>&) noexcept;
get(tuple<T...>&) noexcept; // constexpr in C++14
template <intsize_t I, class... T>
typename tuple_element<I, tuple<T...>>::type const&
get(const tuple<T...>&) noexcept;
get(const tuple<T...>&) noexcept; // constexpr in C++14
template <intsize_t I, class... T>
typename tuple_element<I, tuple<T...>>::type&&
get(tuple<T...>&&) noexcept;
get(tuple<T...>&&) noexcept; // constexpr in C++14
template <class T1, class... T>
constexpr T1& get(tuple<T...>&) noexcept; // C++14
@@ -546,11 +546,11 @@ class _LIBCPP_TYPE_VIS tuple
base base_;
template <size_t _Jp, class ..._Up> friend
template <size_t _Jp, class ..._Up> friend _LIBCPP_CONSTEXPR_AFTER_CXX11
typename tuple_element<_Jp, tuple<_Up...> >::type& get(tuple<_Up...>&) _NOEXCEPT;
template <size_t _Jp, class ..._Up> friend
template <size_t _Jp, class ..._Up> friend _LIBCPP_CONSTEXPR_AFTER_CXX11
const typename tuple_element<_Jp, tuple<_Up...> >::type& get(const tuple<_Up...>&) _NOEXCEPT;
template <size_t _Jp, class ..._Up> friend
template <size_t _Jp, class ..._Up> friend _LIBCPP_CONSTEXPR_AFTER_CXX11
typename tuple_element<_Jp, tuple<_Up...> >::type&& get(tuple<_Up...>&&) _NOEXCEPT;
public:
@@ -763,7 +763,7 @@ swap(tuple<_Tp...>& __t, tuple<_Tp...>& __u)
// get
template <size_t _Ip, class ..._Tp>
inline _LIBCPP_INLINE_VISIBILITY
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
typename tuple_element<_Ip, tuple<_Tp...> >::type&
get(tuple<_Tp...>& __t) _NOEXCEPT
{
@@ -772,7 +772,7 @@ get(tuple<_Tp...>& __t) _NOEXCEPT
}
template <size_t _Ip, class ..._Tp>
inline _LIBCPP_INLINE_VISIBILITY
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
const typename tuple_element<_Ip, tuple<_Tp...> >::type&
get(const tuple<_Tp...>& __t) _NOEXCEPT
{
@@ -781,7 +781,7 @@ get(const tuple<_Tp...>& __t) _NOEXCEPT
}
template <size_t _Ip, class ..._Tp>
inline _LIBCPP_INLINE_VISIBILITY
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
typename tuple_element<_Ip, tuple<_Tp...> >::type&&
get(tuple<_Tp...>&& __t) _NOEXCEPT
{

24
include/utility
View File

@@ -107,15 +107,15 @@ template <class T1, class T2> struct tuple_element<1, std::pair<T1, T2> >;
template<size_t I, class T1, class T2>
typename tuple_element<I, std::pair<T1, T2> >::type&
get(std::pair<T1, T2>&) noexcept;
get(std::pair<T1, T2>&) noexcept; // constexpr in C++14
template<size_t I, class T1, class T2>
const typename const tuple_element<I, std::pair<T1, T2> >::type&
get(const std::pair<T1, T2>&) noexcept;
get(const std::pair<T1, T2>&) noexcept; // constexpr in C++14
template<size_t I, class T1, class T2>
typename tuple_element<I, std::pair<T1, T2> >::type&&
get(std::pair<T1, T2>&&) noexcept;
get(std::pair<T1, T2>&&) noexcept; // constexpr in C++14
template<class T1, class T2>
constexpr T1& get(std::pair<T1, T2>&) noexcept; // C++14
@@ -546,13 +546,13 @@ struct __get_pair<0>
{
template <class _T1, class _T2>
static
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_T1&
get(pair<_T1, _T2>& __p) _NOEXCEPT {return __p.first;}
template <class _T1, class _T2>
static
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
const _T1&
get(const pair<_T1, _T2>& __p) _NOEXCEPT {return __p.first;}
@@ -560,7 +560,7 @@ struct __get_pair<0>
template <class _T1, class _T2>
static
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_T1&&
get(pair<_T1, _T2>&& __p) _NOEXCEPT {return _VSTD::forward<_T1>(__p.first);}
@@ -572,13 +572,13 @@ struct __get_pair<1>
{
template <class _T1, class _T2>
static
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_T2&
get(pair<_T1, _T2>& __p) _NOEXCEPT {return __p.second;}
template <class _T1, class _T2>
static
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
const _T2&
get(const pair<_T1, _T2>& __p) _NOEXCEPT {return __p.second;}
@@ -586,7 +586,7 @@ struct __get_pair<1>
template <class _T1, class _T2>
static
_LIBCPP_INLINE_VISIBILITY
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_T2&&
get(pair<_T1, _T2>&& __p) _NOEXCEPT {return _VSTD::forward<_T2>(__p.second);}
@@ -594,7 +594,7 @@ struct __get_pair<1>
};
template <size_t _Ip, class _T1, class _T2>
_LIBCPP_INLINE_VISIBILITY inline
_LIBCPP_INLINE_VISIBILITY inline _LIBCPP_CONSTEXPR_AFTER_CXX11
typename tuple_element<_Ip, pair<_T1, _T2> >::type&
get(pair<_T1, _T2>& __p) _NOEXCEPT
{
@@ -602,7 +602,7 @@ get(pair<_T1, _T2>& __p) _NOEXCEPT
}
template <size_t _Ip, class _T1, class _T2>
_LIBCPP_INLINE_VISIBILITY inline
_LIBCPP_INLINE_VISIBILITY inline _LIBCPP_CONSTEXPR_AFTER_CXX11
const typename tuple_element<_Ip, pair<_T1, _T2> >::type&
get(const pair<_T1, _T2>& __p) _NOEXCEPT
{
@@ -612,7 +612,7 @@ get(const pair<_T1, _T2>& __p) _NOEXCEPT
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
template <size_t _Ip, class _T1, class _T2>
_LIBCPP_INLINE_VISIBILITY inline
_LIBCPP_INLINE_VISIBILITY inline _LIBCPP_CONSTEXPR_AFTER_CXX11
typename tuple_element<_Ip, pair<_T1, _T2> >::type&&
get(pair<_T1, _T2>&& __p) _NOEXCEPT
{