Program Listing for File dtype.hpp

            

            
/*
* SPDX-FileCopyrightText: Copyright (c) 2021-2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: Apache-2.0
*
* 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/types.hpp>

#include <climits> // for CHAR_BIT
#include <cstddef> // for size_t
#include <cstdint> // for int32_t
#include <string> // for string

namespace morpheus {

// Pulled from cuDF
template <typename T>
constexpr std::size_t size_in_bits()
{
    static_assert(CHAR_BIT == 8, "Size of a byte must be 8 bits.");
    return sizeof(T) * CHAR_BIT;
}

// Pulled from cudf
#pragma GCC visibility push(default)
enum class TypeId : int32_t
{
    EMPTY,
    INT8,
    INT16,
    INT32,
    INT64,
    UINT8,
    UINT16,
    UINT32,
    UINT64,
    FLOAT32,
    FLOAT64,
    BOOL8,
    STRING,

    // TIMESTAMP_DAYS, ///< point in time in days since Unix Epoch in int32
    // TIMESTAMP_SECONDS, ///< point in time in seconds since Unix Epoch in int64
    // TIMESTAMP_MILLISECONDS, ///< point in time in milliseconds since Unix Epoch in int64
    // TIMESTAMP_MICROSECONDS, ///< point in time in microseconds since Unix Epoch in int64
    // TIMESTAMP_NANOSECONDS, ///< point in time in nanoseconds since Unix Epoch in int64
    // DURATION_DAYS, ///< time interval of days in int32
    // DURATION_SECONDS, ///< time interval of seconds in int64
    // DURATION_MILLISECONDS, ///< time interval of milliseconds in int64
    // DURATION_MICROSECONDS, ///< time interval of microseconds in int64
    // DURATION_NANOSECONDS, ///< time interval of nanoseconds in int64
    // DICTIONARY32, ///< Dictionary type using int32 indices
    // LIST, ///< List elements
    // DECIMAL32, ///< Fixed-point type with int32_t
    // DECIMAL64, ///< Fixed-point type with int64_t
    // STRUCT, ///< Struct elements

    // `NUM_TYPE_IDS` must be last!
    NUM_TYPE_IDS
};

/****** DType****************************************/
struct DType  // TODO(dagardner): move to dtype.hpp
{
    DType(TypeId tid);
    DType(const DType& dtype) = default;
    bool operator==(const DType& other) const;

    TypeId type_id() const;

    // Number of bytes per item
    size_t item_size() const;

    // Pretty print
    std::string name() const;

    // Returns the numpy string representation
    std::string type_str() const;

    // Cudf representation
    cudf::type_id cudf_type_id() const;

    // Returns the triton string representation
    std::string triton_str() const;

    // From cudf
    static DType from_cudf(cudf::type_id tid);

    // From numpy
    static DType from_numpy(const std::string& numpy_str);

    // From triton
    static DType from_triton(const std::string& type_str);

    // from template
    template <typename T>
    static DType create()
    {
        if constexpr (std::is_integral_v<T> && std::is_signed_v<T> && size_in_bits<T>() == 8)
        {
            return {TypeId::INT8};
        }
        else if constexpr (std::is_integral_v<T> && std::is_signed_v<T> && size_in_bits<T>() == 16)
        {
            return {TypeId::INT16};
        }
        else if constexpr (std::is_integral_v<T> && std::is_signed_v<T> && size_in_bits<T>() == 32)
        {
            return {TypeId::INT32};
        }
        else if constexpr (std::is_integral_v<T> && std::is_signed_v<T> && size_in_bits<T>() == 64)
        {
            return {TypeId::INT64};
        }
        else if constexpr (std::is_integral_v<T> && std::is_unsigned_v<T> && size_in_bits<T>() == 8)
        {
            return {TypeId::UINT8};
        }
        else if constexpr (std::is_integral_v<T> && std::is_unsigned_v<T> && size_in_bits<T>() == 16)
        {
            return {TypeId::UINT16};
        }
        else if constexpr (std::is_integral_v<T> && std::is_unsigned_v<T> && size_in_bits<T>() == 32)
        {
            return {TypeId::UINT32};
        }
        else if constexpr (std::is_integral_v<T> && std::is_unsigned_v<T> && size_in_bits<T>() == 64)
        {
            return {TypeId::UINT64};
        }
        else if constexpr (std::is_floating_point_v<T> && size_in_bits<T>() == 32)
        {
            return {TypeId::FLOAT32};
        }
        else if constexpr (std::is_floating_point_v<T> && size_in_bits<T>() == 64)
        {
            return {TypeId::FLOAT64};
        }
        else if constexpr (std::is_same_v<T, bool>)
        {
            return {TypeId::BOOL8};
        }
        else if constexpr (std::is_same_v<T, std::string>)
        {
            return {TypeId::STRING};
        }
        else
        {
            static_assert(!sizeof(T), "Type not implemented");
        }

        // To hide compiler warnings
        return {TypeId::EMPTY};
    }

  private:
    char type_char() const;

    TypeId m_type_id;
};
  // end of group
#pragma GCC visibility pop
}  // namespace morpheus