argument_group.h

/*
 * Copyright 2025 Dominik Czekai
 *
 * 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 <memory>
#include <type_traits>
#include <utility>
#include <vector>
 
#include "argument.h"
 
namespace cli::commands
{
 
class ArgumentGroup
{
public:
    template <typename... Args>
        requires((!std::same_as<std::remove_cvref_t<Args>, ArgumentGroup> && ...) &&
                 (std::derived_from<std::remove_cvref_t<Args>, ArgumentBase> && ...))
    explicit ArgumentGroup(bool exclusive, bool inclusive, Args &&...args)
        : exclusive(exclusive), inclusive(inclusive)
    {
        (arguments.emplace_back(
             std::make_shared<std::remove_cvref_t<Args>>(std::forward<Args>(args))),
         ...);
    }
 
    virtual ~ArgumentGroup() = default;
 
    [[nodiscard]] const std::vector<std::shared_ptr<ArgumentBase>> &getArguments() const noexcept
    {
        return arguments;
    }
 
    [[nodiscard]] bool isExclusive() const noexcept { return exclusive; }
 
    [[nodiscard]] bool isInclusive() const noexcept { return inclusive; }
 
    bool isRequired() const;
 
    void addArgument(const std::shared_ptr<ArgumentBase> &arg) { arguments.push_back(arg); }
 
private:
    std::vector<std::shared_ptr<ArgumentBase>> arguments;
    bool exclusive;
    bool inclusive;
};
 
class ExclusiveGroup : public ArgumentGroup
{
public:
    template <typename... Args>
        requires((!std::same_as<std::remove_cvref_t<Args>, ExclusiveGroup> && ...) &&
                 (std::derived_from<std::remove_cvref_t<Args>, ArgumentBase> && ...))
    explicit ExclusiveGroup(Args &&...args)
        : ArgumentGroup(true, false, std::forward<Args>(args)...)
    {
    }
};
 
class InclusiveGroup : public ArgumentGroup
{
public:
    template <typename... Args>
        requires((!std::same_as<std::remove_cvref_t<Args>, InclusiveGroup> && ...) &&
                 (std::derived_from<std::remove_cvref_t<Args>, ArgumentBase> && ...))
    explicit InclusiveGroup(Args &&...args)
        : ArgumentGroup(false, true, std::forward<Args>(args)...)
    {
    }
};
} // namespace cli::commands