Program Listing for File every_n.hpp
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// Copyright 2024 Ekumen, Inc.
//
// 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 BELUGA_POLICIES_EVERY_N_HPP
#define BELUGA_POLICIES_EVERY_N_HPP
#include <beluga/policies/policy.hpp>
namespace beluga::policies {
namespace detail {
struct every_n_policy {
public:
explicit constexpr every_n_policy(std::size_t count) : count_(count) {}
constexpr bool operator()() {
current_ = (current_ + 1) % count_;
return current_ == 0;
}
private:
std::size_t count_{0};
std::size_t current_{0};
};
struct every_n_fn {
constexpr auto operator()(std::size_t count) const { return beluga::make_policy(every_n_policy{count}); }
};
} // namespace detail
inline constexpr detail::every_n_fn every_n;
} // namespace beluga::policies
#endif