47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
/**
|
|
This file is a part of rexy's general purpose library
|
|
Copyright (C) 2020-2022 rexy712
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef REXY_DEFAULT_ALLOCATOR_HPP
|
|
#define REXY_DEFAULT_ALLOCATOR_HPP
|
|
|
|
#include "compat/allocator.hpp"
|
|
|
|
#include <type_traits> //declval
|
|
|
|
namespace rexy{
|
|
|
|
template<class T, class U>
|
|
constexpr bool operator==(const allocator<T>&, const allocator<U>&){
|
|
return true;
|
|
}
|
|
template<class T, class U>
|
|
constexpr bool operator!=(const allocator<T>&, const allocator<U>&){
|
|
return false;
|
|
}
|
|
|
|
template<REXY_ALLOCATOR_CONCEPT T>
|
|
struct is_nothrow_allocator{
|
|
static constexpr bool value = noexcept(std::declval<T>().allocate(0)) && noexcept(std::declval<T>().deallocate(nullptr, 0));
|
|
};
|
|
template<REXY_ALLOCATOR_CONCEPT T>
|
|
static constexpr bool is_nothrow_allocator_v = is_nothrow_allocator<T>::value;
|
|
|
|
}
|
|
|
|
#endif
|