initializer_list revision 232924 
1// -*- C++ -*-
2//===----------------------- initializer_list -----------------------------===//
3//
4//                     The LLVM Compiler Infrastructure
5//
6// This file is dual licensed under the MIT and the University of Illinois Open
7// Source Licenses. See LICENSE.TXT for details.
8//
9//===----------------------------------------------------------------------===//
10
11#ifndef _LIBCPP_INITIALIZER_LIST
12#define _LIBCPP_INITIALIZER_LIST
13
14/*
15    initializer_list synopsis
16
17namespace std
18{
19
20template<class E>
21class initializer_list
22{
23public:
24    typedef E        value_type;
25    typedef const E& reference;
26    typedef const E& const_reference;
27    typedef size_t   size_type;
28
29    typedef const E* iterator;
30    typedef const E* const_iterator;
31
32    initializer_list() noexcept;
33
34    size_t   size()  const noexcept;
35    const E* begin() const noexcept;
36    const E* end()   const noexcept;
37};
38
39template<class E> const E* begin(initializer_list<E> il) noexcept;
40template<class E> const E* end(initializer_list<E> il) noexcept;
41
42}  // std
43
44*/
45
46#include <__config>
47#include <cstddef>
48
49#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
50#pragma GCC system_header
51#endif
52
53namespace std  // purposefully not versioned
54{
55
56#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
57
58template<class _Ep>
59class _LIBCPP_VISIBLE initializer_list
60{
61    const _Ep* __begin_;
62    size_t    __size_;
63
64    _LIBCPP_ALWAYS_INLINE
65    initializer_list(const _Ep* __b, size_t __s) _NOEXCEPT
66        : __begin_(__b),
67          __size_(__s)
68        {}
69public:
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_ALWAYS_INLINE initializer_list() _NOEXCEPT : __begin_(nullptr), __size_(0) {}
79
80    _LIBCPP_ALWAYS_INLINE size_t    size()  const _NOEXCEPT {return __size_;}
81    _LIBCPP_ALWAYS_INLINE const _Ep* begin() const _NOEXCEPT {return __begin_;}
82    _LIBCPP_ALWAYS_INLINE const _Ep* end()   const _NOEXCEPT {return __begin_ + __size_;}
83};
84
85template<class _Ep>
86inline _LIBCPP_INLINE_VISIBILITY
87const _Ep*
88begin(initializer_list<_Ep> __il) _NOEXCEPT
89{
90    return __il.begin();
91}
92
93template<class _Ep>
94inline _LIBCPP_INLINE_VISIBILITY
95const _Ep*
96end(initializer_list<_Ep> __il) _NOEXCEPT
97{
98    return __il.end();
99}
100
101#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
102
103}  // std
104
105#endif  // _LIBCPP_INITIALIZER_LIST
106