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       1              : /**
       2              :  * Copyright (c) 2025 Huawei Technologies Co., Ltd.
       3              :  * This program is free software, you can redistribute it and/or modify it under the terms and conditions of
       4              :  * CANN Open Software License Agreement Version 2.0 (the "License").
       5              :  * Please refer to the License for details. You may not use this file except in compliance with the License.
       6              :  * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
       7              :  * INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
       8              :  * See LICENSE in the root of the software repository for the full text of the License.
       9              :  */
      10              : 
      11              : #ifndef HCCLV2_ENUM_FACTORY_H
      12              : #define HCCLV2_ENUM_FACTORY_H
      13              : 
      14              : #include "string_util.h"
      15              : 
      16              : #include <string>
      17              : #include <sstream>
      18              : 
      19              : #define MAKE_ENUM(enumClass, ...)                                                                                    \
      20              :     class enumClass {                                                                                                \
      21              :     public:                                                                                                          \
      22              :         enum Value : uint8_t { __VA_ARGS__, __COUNT__, INVALID };                                                    \
      23              :                                                                                                                      \
      24              :         enumClass() {}                                                                                               \
      25              :                                                                                                                      \
      26              :         constexpr enumClass(Value v) : value(v) {}                                                                   \
      27              :                                                                                                                      \
      28              :         constexpr operator Value() const { return value; }                                                           \
      29              :                                                                                                                      \
      30              :         constexpr bool operator==(enumClass a) const { return value == a.value; }                                    \
      31              :                                                                                                                      \
      32              :         constexpr bool operator!=(enumClass a) const { return value != a.value; }                                    \
      33              :                                                                                                                      \
      34              :         constexpr bool operator<(enumClass a) const { return value < a.value; }                                      \
      35              :                                                                                                                      \
      36              :         constexpr bool operator==(Value v) const { return value == v; }                                              \
      37              :                                                                                                                      \
      38              :         constexpr bool operator!=(Value v) const { return value != v; }                                              \
      39              :                                                                                                                      \
      40              :         constexpr bool operator<(Value v) const { return value < v; }                                                \
      41              :                                                                                                                      \
      42              :         std::string Describe() const                                                                                 \
      43              :         {                                                                                                            \
      44              :             static std::vector<std::string> m = InitStrs();                                                          \
      45              :             if (value >= m.size())                                                                                   \
      46              :                 return std::string(#enumClass) + "::Invalid";                                                        \
      47              :             return m[value];                                                                                         \
      48              :         }                                                                                                            \
      49              :                                                                                                                      \
      50              :         friend std::ostream& operator<<(std::ostream& stream, const enumClass& v) { return stream << v.Describe(); } \
      51              :                                                                                                                      \
      52              :     private:                                                                                                         \
      53              :         Value value{INVALID};                                                                                        \
      54              :                                                                                                                      \
      55              :         static std::vector<std::string> InitStrs()                                                                   \
      56              :         {                                                                                                            \
      57              :             std::vector<std::string> strings;                                                                        \
      58              :             std::string s = #__VA_ARGS__;                                                                            \
      59              :             std::string token;                                                                                       \
      60              :             for (char c : s) {                                                                                       \
      61              :                 if (c == ' ' || c == ',') {                                                                          \
      62              :                     if (!token.empty()) {                                                                            \
      63              :                         strings.push_back({std::string(#enumClass) + "::" + token});                                 \
      64              :                         token.clear();                                                                               \
      65              :                     }                                                                                                \
      66              :                 } else {                                                                                             \
      67              :                     token += c;                                                                                      \
      68              :                 }                                                                                                    \
      69              :             }                                                                                                        \
      70              :             if (!token.empty())                                                                                      \
      71              :                 strings.push_back({std::string(#enumClass) + "::" + token});                                         \
      72              :             return strings;                                                                                          \
      73              :         }                                                                                                            \
      74              :     };
      75              : 
      76              : namespace std {
      77              : struct EnumClassHash {
      78              :     template <typename T>
      79       811631 :     std::size_t operator()(T t) const
      80              :     {
      81       811631 :         return static_cast<std::size_t>(t);
      82              :     }
      83              : };
      84              : } // namespace std
      85              : 
      86              : #endif // HCCLV2_ENUM_FACTORY_H