interval_array.hpp

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// Copyright 2024 Man Group Operations Limited
//
// 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 "sparrow/layout/primitive_layout/primitive_array_impl.hpp"
#include "sparrow/layout/temporal/interval_types.hpp"
#include "sparrow/types/data_traits.hpp"
 
// tiM : std::chrono::months
// tiD : sparrow::day_time_interval
// tin : sparrow::month_day_nanoseconds_interval
 
namespace sparrow
{
    using interval_types_t = mpl::typelist<chrono::months, days_time_interval, month_day_nanoseconds_interval>;
 
    template <typename T>
    concept interval_type = mpl::contains<interval_types_t, T>();
 
    namespace detail
    {
        template <>
        struct primitive_data_traits<chrono::months>
        {
            static constexpr sparrow::data_type type_id = sparrow::data_type::INTERVAL_MONTHS;
        };
 
        template <>
        struct primitive_data_traits<days_time_interval>
        {
            static constexpr sparrow::data_type type_id = sparrow::data_type::INTERVAL_DAYS_TIME;
        };
 
        template <>
        struct primitive_data_traits<month_day_nanoseconds_interval>
        {
            static constexpr sparrow::data_type type_id = sparrow::data_type::INTERVAL_MONTHS_DAYS_NANOSECONDS;
        };
    }

    template <interval_type T>
    using interval_array = primitive_array_impl<T>;

    using months_interval_array = interval_array<chrono::months>;
    using days_time_interval_array = interval_array<days_time_interval>;
    using month_day_nanoseconds_interval_array = interval_array<month_day_nanoseconds_interval>;
 
    template <class T>
    struct is_interval_array : std::false_type
    {
    };
 
    template <class T>
    struct is_interval_array<interval_array<T>> : std::true_type
    {
    };

    template <class T>
    constexpr bool is_interval_array_v = is_interval_array<T>::value;
};