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110 lines
3.0 KiB
110 lines
3.0 KiB
// std::initializer_list support -*- C++ -*-
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// Copyright (C) 2008-2021 Free Software Foundation, Inc.
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//
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// This file is part of GCC.
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//
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// GCC is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 3, or (at your option)
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// any later version.
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//
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// GCC is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/** @file initializer_list
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* This is a Standard C++ Library header.
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*/
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#ifndef _INITIALIZER_LIST
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#define _INITIALIZER_LIST
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#pragma GCC system_header
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#if __cplusplus < 201103L
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# include <bits/c++0x_warning.h>
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#else // C++0x
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#pragma GCC visibility push(default)
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#include <bits/c++config.h>
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namespace std
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{
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/// initializer_list
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template<class _E>
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class initializer_list
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{
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public:
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typedef _E value_type;
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typedef const _E& reference;
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typedef const _E& const_reference;
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typedef size_t size_type;
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typedef const _E* iterator;
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typedef const _E* const_iterator;
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private:
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iterator _M_array;
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size_type _M_len;
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// The compiler can call a private constructor.
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constexpr initializer_list(const_iterator __a, size_type __l)
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: _M_array(__a), _M_len(__l) { }
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public:
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constexpr initializer_list() noexcept
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: _M_array(0), _M_len(0) { }
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// Number of elements.
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constexpr size_type
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size() const noexcept { return _M_len; }
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// First element.
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constexpr const_iterator
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begin() const noexcept { return _M_array; }
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// One past the last element.
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constexpr const_iterator
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end() const noexcept { return begin() + size(); }
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};
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/**
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* @brief Return an iterator pointing to the first element of
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* the initializer_list.
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* @param __ils Initializer list.
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* @relates initializer_list
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*/
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template<class _Tp>
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constexpr const _Tp*
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begin(initializer_list<_Tp> __ils) noexcept
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{ return __ils.begin(); }
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/**
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* @brief Return an iterator pointing to one past the last element
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* of the initializer_list.
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* @param __ils Initializer list.
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* @relates initializer_list
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*/
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template<class _Tp>
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constexpr const _Tp*
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end(initializer_list<_Tp> __ils) noexcept
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{ return __ils.end(); }
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}
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#pragma GCC visibility pop
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#endif // C++11
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#endif // _INITIALIZER_LIST
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