parameter_value_vector.h

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/*
 * Copyright 2021 MusicScience37 (Kenta Kabashima)
 *
 * 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.
 */
#pragma once
 
#include <cstddef>
#include <utility>  // IWYU pragma: keep
#include <vector>
 
#include "stat_bench/param/parameter_value.h"
 
namespace stat_bench {
namespace param {

class IParameterValueVector {
public:
    using ConstIterator = std::vector<ParameterValue>::const_iterator;

    [[nodiscard]] virtual auto begin() const -> ConstIterator = 0;

    [[nodiscard]] virtual auto end() const -> ConstIterator = 0;

    [[nodiscard]] virtual auto size() const -> std::size_t = 0;
 
    IParameterValueVector(const IParameterValueVector&) = delete;
    IParameterValueVector(IParameterValueVector&&) = delete;
    auto operator=(const IParameterValueVector&)
        -> IParameterValueVector& = delete;
    auto operator=(IParameterValueVector&&) -> IParameterValueVector& = delete;

    virtual ~IParameterValueVector() = default;
 
protected:
    IParameterValueVector() = default;
};

template <typename T>
class ParameterValueVector final : public IParameterValueVector {
public:
    ParameterValueVector() = default;

    auto add(const T& value) -> ParameterValueVector* {
        values_.push_back(std::move(ParameterValue().emplace<T>(value)));
        return this;
    }

    [[nodiscard]] auto begin() const -> ConstIterator override {
        return values_.begin();
    }

    [[nodiscard]] auto end() const -> ConstIterator override {
        return values_.end();
    }

    [[nodiscard]] auto size() const -> std::size_t override {
        return values_.size();
    }
 
    ParameterValueVector(const ParameterValueVector&) = delete;
    ParameterValueVector(ParameterValueVector&&) = delete;
    auto operator=(const ParameterValueVector&)
        -> ParameterValueVector& = delete;
    auto operator=(ParameterValueVector&&) -> ParameterValueVector& = delete;

    ~ParameterValueVector() override = default;
 
private:
    std::vector<ParameterValue> values_{};
};
 
}  // namespace param
}  // namespace stat_bench