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comparison libcxx/include/initializer_list @ 150:1d019706d866

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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
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children 2e18cbf3894f
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147:c2174574ed3a 150:1d019706d866
1 // -*- C++ -*-
2 //===----------------------- initializer_list -----------------------------===//
3 //
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //
8 //===----------------------------------------------------------------------===//
9
10 #ifndef _LIBCPP_INITIALIZER_LIST
11 #define _LIBCPP_INITIALIZER_LIST
12
13 /*
14 initializer_list synopsis
15
16 namespace std
17 {
18
19 template<class E>
20 class initializer_list
21 {
22 public:
23 typedef E value_type;
24 typedef const E& reference;
25 typedef const E& const_reference;
26 typedef size_t size_type;
27
28 typedef const E* iterator;
29 typedef const E* const_iterator;
30
31 initializer_list() noexcept; // constexpr in C++14
32
33 size_t size() const noexcept; // constexpr in C++14
34 const E* begin() const noexcept; // constexpr in C++14
35 const E* end() const noexcept; // constexpr in C++14
36 };
37
38 template<class E> const E* begin(initializer_list<E> il) noexcept; // constexpr in C++14
39 template<class E> const E* end(initializer_list<E> il) noexcept; // constexpr in C++14
40
41 } // std
42
43 */
44
45 #include <__config>
46 #include <cstddef>
47
48 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
49 #pragma GCC system_header
50 #endif
51
52 namespace std // purposefully not versioned
53 {
54
55 #ifndef _LIBCPP_CXX03_LANG
56
57 template<class _Ep>
58 class _LIBCPP_TEMPLATE_VIS initializer_list
59 {
60 const _Ep* __begin_;
61 size_t __size_;
62
63 _LIBCPP_INLINE_VISIBILITY
64 _LIBCPP_CONSTEXPR_AFTER_CXX11
65 initializer_list(const _Ep* __b, size_t __s) _NOEXCEPT
66 : __begin_(__b),
67 __size_(__s)
68 {}
69 public:
70 typedef _Ep value_type;
71 typedef const _Ep& reference;
72 typedef const _Ep& const_reference;
73 typedef size_t size_type;
74
75 typedef const _Ep* iterator;
76 typedef const _Ep* const_iterator;
77
78 _LIBCPP_INLINE_VISIBILITY
79 _LIBCPP_CONSTEXPR_AFTER_CXX11
80 initializer_list() _NOEXCEPT : __begin_(nullptr), __size_(0) {}
81
82 _LIBCPP_INLINE_VISIBILITY
83 _LIBCPP_CONSTEXPR_AFTER_CXX11
84 size_t size() const _NOEXCEPT {return __size_;}
85
86 _LIBCPP_INLINE_VISIBILITY
87 _LIBCPP_CONSTEXPR_AFTER_CXX11
88 const _Ep* begin() const _NOEXCEPT {return __begin_;}
89
90 _LIBCPP_INLINE_VISIBILITY
91 _LIBCPP_CONSTEXPR_AFTER_CXX11
92 const _Ep* end() const _NOEXCEPT {return __begin_ + __size_;}
93 };
94
95 template<class _Ep>
96 inline _LIBCPP_INLINE_VISIBILITY
97 _LIBCPP_CONSTEXPR_AFTER_CXX11
98 const _Ep*
99 begin(initializer_list<_Ep> __il) _NOEXCEPT
100 {
101 return __il.begin();
102 }
103
104 template<class _Ep>
105 inline _LIBCPP_INLINE_VISIBILITY
106 _LIBCPP_CONSTEXPR_AFTER_CXX11
107 const _Ep*
108 end(initializer_list<_Ep> __il) _NOEXCEPT
109 {
110 return __il.end();
111 }
112
113 #endif // !defined(_LIBCPP_CXX03_LANG)
114
115 } // std
116
117 #endif // _LIBCPP_INITIALIZER_LIST