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我有一个简单的 C 程序test.c，我想在 pycparser 的帮助下获取sample_enum和sample_struct使用 python 的成员。

#include <stdio.h>

typedef enum sample_enum
{
    board1 = 0,
    board2 = 1,
    board3 = 2,
    board4 = 3,
    board5 = 4,
    board6 = 5,
} sample_enum_t;

typedef struct sample_struct {
    uint32_t pd_type1;
    uint32_t pd_type2;
    uint32_t pd_type3;
} sample_struct_t;

int main() {

    return 0;
}

我得到预处理输出并将其保存到test.txt.

gcc -E -I/path/to/pycparser/utils/fake_libc_include test.c > test.txt

这是我的python程序：

from pycparser import parse_file, c_parser, c_ast

if __name__ == "__main__":

    ast = parse_file(filename='test.txt')
    ast.show(showcoord=True)

ast.show 打印一堆输出，包括这些：

  Typedef: sample_enum_t, [], ['typedef'] (at test.c:11:3)
    TypeDecl: sample_enum_t, [] (at test.c:11:3)
      Enum: sample_enum (at test.c:3:9)
        EnumeratorList:  (at test.c:5:5)
          Enumerator: board1 (at test.c:5:5)
            Constant: int, 0 (at test.c:5:14)
          Enumerator: board2 (at test.c:6:5)
            Constant: int, 1 (at test.c:6:14)
          Enumerator: board3 (at test.c:7:5)
            Constant: int, 2 (at test.c:7:14)
          Enumerator: board4 (at test.c:8:5)
            Constant: int, 3 (at test.c:8:14)
          Enumerator: board5 (at test.c:9:5)
            Constant: int, 4 (at test.c:9:14)
          Enumerator: board6 (at test.c:10:5)
            Constant: int, 5 (at test.c:10:14)

  Typedef: sample_struct_t, [], ['typedef'] (at test.c:17:3)
    TypeDecl: sample_struct_t, [] (at test.c:17:3)
      Struct: sample_struct (at test.c:13:16)
        Decl: pd_type1, [], [], [] (at test.c:14:14)
          TypeDecl: pd_type1, [] (at test.c:14:14)
            IdentifierType: ['uint32_t'] (at test.c:14:5)
        Decl: pd_type2, [], [], [] (at test.c:15:14)
          TypeDecl: pd_type2, [] (at test.c:15:14)
            IdentifierType: ['uint32_t'] (at test.c:15:5)
        Decl: pd_type3, [], [], [] (at test.c:16:14)
          TypeDecl: pd_type3, [] (at test.c:16:14)
            IdentifierType: ['uint32_t'] (at test.c:16:5)
  FuncDef:  (at test.c:20:5)
    Decl: main, [], [], [] (at test.c:20:5)
      FuncDecl:  (at test.c:20:5)
        TypeDecl: main, [] (at test.c:20:5)
          IdentifierType: ['int'] (at test.c:20:1)
    Compound:  (at test.c:20:1)
      Return:  (at test.c:22:5)
        Constant: int, 0 (at test.c:22:12)

所以我的问题是，我是否需要解析输出并分别提取 enum 和 struct 的成员？或者里面有一个内置的方法/机制pycparser可能会让我的生活更轻松。

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