|
| 1 | +import logging |
| 2 | +import argparse |
| 3 | + |
| 4 | +""" |
| 5 | +Convert the generated code in sai_header.py. |
| 6 | +For the generated code from c++ enum, convert it to python enum class. |
| 7 | +
|
| 8 | +the code like |
| 9 | + ```C++ |
| 10 | + /** |
| 11 | + * @brief SAI common API type |
| 12 | + */ |
| 13 | + typedef enum _sai_common_api_t |
| 14 | + { |
| 15 | + SAI_COMMON_API_CREATE = 0, |
| 16 | + SAI_COMMON_API_REMOVE = 1, |
| 17 | + ... |
| 18 | + } sai_common_api_t; |
| 19 | + ``` |
| 20 | + original converted by ctypesgen |
| 21 | + ``` |
| 22 | + enum__sai_common_api_t = c_int# /usr/include/sai/saitypes.h: 183 |
| 23 | + |
| 24 | + SAI_COMMON_API_CREATE = 0# /usr/include/sai/saitypes.h: 183 |
| 25 | + |
| 26 | + SAI_COMMON_API_REMOVE = 1# /usr/include/sai/saitypes.h: 183 |
| 27 | + ... |
| 28 | + ``` |
| 29 | + new code |
| 30 | + ``` |
| 31 | + class sai_common_api(SAIEnum): |
| 32 | + |
| 33 | + SAI_COMMON_API_CREATE = 0# /usr/include/sai/saitypes.h: 183 |
| 34 | + |
| 35 | + SAI_COMMON_API_REMOVE = 1# /usr/include/sai/saitypes.h: 183 |
| 36 | + ... |
| 37 | + |
| 38 | + SAI_COMMON_API_CREATE = sai_common_api.SAI_COMMON_API_CREATE |
| 39 | + SAI_COMMON_API_REMOVE = sai_common_api.SAI_COMMON_API_REMOVE |
| 40 | + ... |
| 41 | + ``` |
| 42 | + |
| 43 | +""" |
| 44 | + |
| 45 | + |
| 46 | +ENUM_DEF = """ |
| 47 | +import enum |
| 48 | +class SAIEnum(enum.IntEnum): |
| 49 | + def __str__(self): |
| 50 | + return super().__str__().split(\".\")[1]\n""" |
| 51 | +ENUM_PREFIX = "enum__sai_" |
| 52 | +SAI_NAME = "SAI" |
| 53 | +ENUM_TYPE = "= c_int" |
| 54 | +ENUM_END = " = enum__sai_" |
| 55 | +ENUM_CLASS_TEMPLATE = "class {}(SAIEnum):\n" |
| 56 | + |
| 57 | +def parse_param(): |
| 58 | + ''' |
| 59 | + Parse param. |
| 60 | + ''' |
| 61 | + parser = argparse.ArgumentParser( |
| 62 | + description=""" |
| 63 | + Convert python file after ctypesgen convert. |
| 64 | + """ |
| 65 | + ) |
| 66 | + |
| 67 | + parser.add_argument( |
| 68 | + "-i", type=str, dest="input_file", |
| 69 | + help="input file name", required=True) |
| 70 | + parser.add_argument( |
| 71 | + "-o", type=str, dest="output_file", |
| 72 | + help="output file name", required=True) |
| 73 | + return parser.parse_args() |
| 74 | + |
| 75 | +def convert_enum_start_to_class(line): |
| 76 | + """ |
| 77 | + Convert the enum to class. |
| 78 | + args: |
| 79 | + line: input |
| 80 | + """ |
| 81 | + class_name = line.strip("enum__").split("_t = c_int", 1)[0] |
| 82 | + return class_name |
| 83 | + |
| 84 | +def convert_file(input_file_name, output_file_name): |
| 85 | + """ |
| 86 | + Convert the input file to a output file. |
| 87 | +
|
| 88 | + """ |
| 89 | + input_file = open(input_file_name, 'r') |
| 90 | + output_file = open(output_file_name, 'w') |
| 91 | + enum_times = 0 |
| 92 | + enum_items = [] |
| 93 | + enum_start = False |
| 94 | + class_name = None |
| 95 | + |
| 96 | + for line in input_file.readlines(): |
| 97 | + if not enum_start and enum_times == 0 and ENUM_PREFIX in line and ENUM_TYPE in line: |
| 98 | + # first time hit a enum |
| 99 | + # add import |
| 100 | + output_file.writelines(line) |
| 101 | + output_file.write(ENUM_DEF) |
| 102 | + enum_times= enum_times + 1 |
| 103 | + enum_start = True |
| 104 | + enum_items = [] |
| 105 | + output_file.write("\n") |
| 106 | + class_name = convert_enum_start_to_class(line) |
| 107 | + output_file.writelines(ENUM_CLASS_TEMPLATE.format(class_name)) |
| 108 | + output_file.flush() |
| 109 | + continue |
| 110 | + elif not enum_start and enum_times > 0 and ENUM_PREFIX in line and ENUM_TYPE in line: |
| 111 | + output_file.writelines(line) |
| 112 | + enum_times= enum_times + 1 |
| 113 | + enum_start = True |
| 114 | + enum_items = [] |
| 115 | + output_file.write("\n") |
| 116 | + class_name = convert_enum_start_to_class(line) |
| 117 | + output_file.writelines(ENUM_CLASS_TEMPLATE.format(class_name)) |
| 118 | + output_file.flush() |
| 119 | + continue |
| 120 | + elif enum_start and ENUM_END not in line and SAI_NAME in line: |
| 121 | + line = line.split("\n", 1)[0] |
| 122 | + enum_name = line.split(" =", 1)[0] |
| 123 | + enum_items.append(enum_name) |
| 124 | + output_file.write(" {}\n".format(line)) |
| 125 | + output_file.flush() |
| 126 | + continue |
| 127 | + elif ENUM_END in line: |
| 128 | + enum_start = False |
| 129 | + output_file.write("\n") |
| 130 | + for item in enum_items: |
| 131 | + output_file.write("{} = {}.{}".format(item, class_name, item)) |
| 132 | + output_file.write("\n") |
| 133 | + output_file.write("\n") |
| 134 | + output_file.writelines(line) |
| 135 | + output_file.flush() |
| 136 | + continue |
| 137 | + else: |
| 138 | + output_file.writelines(line) |
| 139 | + |
| 140 | + |
| 141 | + output_file.flush() |
| 142 | + input_file.close() |
| 143 | + output_file.close() |
| 144 | + |
| 145 | + |
| 146 | +if __name__ == "__main__": |
| 147 | + ''' |
| 148 | + For the generated code from c++ enum, convert it to python enum class. |
| 149 | + ''' |
| 150 | + args = parse_param() |
| 151 | + convert_file(args.input_file, args.output_file) |
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