timezone.hpp

/*
 * Copyright (c) 2023-2024, NVIDIA CORPORATION.
 *
 * 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 <cudf/utilities/default_stream.hpp>
#include <cudf/utilities/export.hpp>
#include <cudf/utilities/memory_resource.hpp>
 
#include <rmm/cuda_stream_view.hpp>
 
#include <memory>
#include <optional>
#include <string>
 
namespace CUDF_EXPORT cudf {
class table;
 
// Cycle in which the time offsets repeat in Gregorian calendar
static constexpr int32_t solar_cycle_years = 400;
// Number of future entries in the timezone transition table:
// Two entries per year, over the length of the Gregorian calendar's solar cycle
static constexpr uint32_t solar_cycle_entry_count = 2 * solar_cycle_years;
 
std::unique_ptr<table> make_timezone_transition_table(
  std::optional<std::string_view> tzif_dir,
  std::string_view timezone_name,
  rmm::cuda_stream_view stream      = cudf::get_default_stream(),
  rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());
 
}  // namespace CUDF_EXPORT cudf