Files
scylladb/utils/value_or_reference.hh
Avi Kivity f3eade2f62 treewide: relicense to ScyllaDB-Source-Available-1.0
Drop the AGPL license in favor of a source-available license.
See the blog post [1] for details.

[1] https://www.scylladb.com/2024/12/18/why-were-moving-to-a-source-available-license/
2024-12-18 17:45:13 +02:00

28 lines
652 B
C++

/*
* Copyright (C) 2024-present ScyllaDB
*/
/*
* SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
*/
#pragma once
#include <optional>
template <typename T>
struct value_or_reference {
std::optional<T> _opt;
const T& _ref;
explicit value_or_reference(T&& v) : _opt(std::move(v)), _ref(*_opt) {}
explicit value_or_reference(const T& v) : _ref(v) {}
value_or_reference(value_or_reference&& o) : _opt(std::move(o._opt)), _ref(_opt ? *_opt : o._ref) {}
value_or_reference(const value_or_reference& o) : _opt(o._opt), _ref(_opt ? *_opt : o._ref) {}
const T& get() const {
return _ref;
}
};