Options.hpp

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// This file is part of the Acts project.
//
// Copyright (C) 2017 CERN for the benefit of the Acts project
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#pragma once

#include <iosfwd>
#include <optional>
#include <string>
#include <utility>
#include <vector>

namespace ActsExamples {
namespace Options {

struct Interval {
  std::optional<double> lower;
  std::optional<double> upper;
};

std::istream& operator>>(std::istream& is, Interval& interval);

std::ostream& operator<<(std::ostream& os, const Interval& interval);

std::istream& operator>>(std::istream& is, std::vector<Interval>& intervals);

std::ostream& operator<<(std::ostream& os,
                         const std::vector<Interval>& intervals);

}  // namespace Options
}  // namespace ActsExamples

using read_series = std::vector<int>;
using read_range = std::vector<double>;
using read_strings = std::vector<std::string>;

// Overloads must exist in the `std` namespace so ADL-lookup can find them.
namespace std {

std::ostream& operator<<(std::ostream& os, const read_series& vec);

std::ostream& operator<<(std::ostream& os, const read_range& vec);

std::ostream& operator<<(std::ostream& os, const read_strings& vec);

}  // namespace std