initializer_list.h

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// Copyright (C) Sven Rosvall (sven@rosvall.ie)
// This file is part of VLCB-Arduino project on https://github.com/SvenRosvall/VLCB-Arduino
// Licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
// The full licence can be found at: http://creativecommons.org/licenses/by-nc-sa/4.0/
 
// Use the same include guard as GNU C++ and Clang uses so that this doesn't clash for running the test suite.
// Note the double include guard macros as GNU C++ and Clang use different include guard macros.
#if !defined(_INITIALIZER_LIST) && !defined(_LIBCPP_INITIALIZER_LIST)
#define _INITIALIZER_LIST        // GNU C++
#define _LIBCPP_INITIALIZER_LIST // Clang
 
#include <stddef.h>
 
namespace std
{
  template<class E>
    class initializer_list
    {
    public:
 
      constexpr initializer_list() noexcept : array(0), len(0) { }
 
      // Number of elements.
      constexpr size_t
      size() const noexcept { return len; }
 
      // First element.
      constexpr const E*
      begin() const noexcept { return array; }
 
      // One past the last element.
      constexpr const E*
      end() const noexcept { return begin() + size(); }
 
      // private:
      // The compiler uses this
      constexpr initializer_list(const E* a, size_t l)
        : array(a), len(l) { }
        
    private:
      const E* array;
      size_t len;
    };
 
  template<class T>
    constexpr const T*
    begin(initializer_list<T> ils) noexcept
    { return ils.begin(); }
 
  template<class T>
    constexpr const T*
    end(initializer_list<T> ils) noexcept
    { return ils.end(); }
}
 
#endif