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/*
* libfud
* Copyright 2024 Dominick Allen
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef FUD_DRAIN_HPP
#define FUD_DRAIN_HPP
#include "fud_status.hpp"
#include <concepts>
#include <cstddef>
namespace fud {
struct DrainResult {
size_t bytesDrained;
FudStatus status;
[[nodiscard]] constexpr bool isOkay()
{
return status == FudStatus::Success;
}
constexpr bool operator==(const DrainResult&) const noexcept = default;
};
template <typename Sink, typename Source>
concept Drainable = requires (Sink sink, Source source)
{
{ sink.drain(source) } -> std::same_as<DrainResult>;
};
} // namespace fud
#endif
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