mirror of
https://github.com/XRPLF/rippled.git
synced 2025-11-19 18:45:52 +00:00
45 lines
1.6 KiB
C++
45 lines
1.6 KiB
C++
//------------------------------------------------------------------------------
|
|
/*
|
|
This file is part of Beast: https://github.com/vinniefalco/Beast
|
|
Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
|
|
|
|
Permission to use, copy, modify, and/or distribute this software for any
|
|
purpose with or without fee is hereby granted, provided that the above
|
|
copyright notice and this permission notice appear in all copies.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
//==============================================================================
|
|
|
|
#ifndef BEAST_UTILITY_MAYBE_CONST_H_INCLUDED
|
|
#define BEAST_UTILITY_MAYBE_CONST_H_INCLUDED
|
|
|
|
#include <type_traits>
|
|
|
|
namespace beast {
|
|
|
|
/** Makes T const or non const depending on a bool. */
|
|
template <bool IsConst, class T>
|
|
struct maybe_const
|
|
{
|
|
explicit maybe_const() = default;
|
|
using type = typename std::conditional<
|
|
IsConst,
|
|
typename std::remove_const<T>::type const,
|
|
typename std::remove_const<T>::type>::type;
|
|
};
|
|
|
|
/** Alias for omitting `typename`. */
|
|
template <bool IsConst, class T>
|
|
using maybe_const_t = typename maybe_const<IsConst, T>::type;
|
|
|
|
} // namespace beast
|
|
|
|
#endif
|