/*
 * 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.
 *
 * Copyright 2018 Danny Robson <danny@nerdcruft.net>
 */

#pragma once

#include "base.hpp"

#include <functional>


///////////////////////////////////////////////////////////////////////////////
namespace util::json::schema::constraint {
    template <typename ComparatorT>
    class length final : public base {
    public:
        length (::json::tree::node const&);
        virtual ~length () = default;

        output_iterator validate (output_iterator, ::json::tree::node &target) const noexcept override;
        std::ostream& describe (std::ostream&) const override;

    private:
        std::size_t m_length;
    };


    using max_length = length<std::less_equal<std::size_t>>;
    using min_length = length<std::greater_equal<std::size_t>>;
}