| /* Interface to map C struct members to Python object attributes */ |
| |
| /* The offsetof() macro calculates the offset of a structure member |
| in its structure. Unfortunately this cannot be written down |
| portably, hence it is provided by a Standard C header file. |
| For pre-Standard C compilers, here is a version that usually works |
| (but watch out!): */ |
| |
| #ifndef offsetof |
| #define offsetof(type, member) ( (int) & ((type*)0) -> member ) |
| #endif |
| |
| /* An array of memberlist structures defines the name, type and offset |
| of selected members of a C structure. These can be read by |
| getmember() and set by setmember() (except if their READONLY flag |
| is set). The array must be terminated with an entry whose name |
| pointer is NULL. */ |
| |
| struct memberlist { |
| char *name; |
| int type; |
| int offset; |
| int readonly; |
| }; |
| |
| /* Types */ |
| #define T_SHORT 0 |
| #define T_INT 1 |
| #define T_LONG 2 |
| #define T_FLOAT 3 |
| #define T_DOUBLE 4 |
| #define T_STRING 5 |
| #define T_OBJECT 6 |
| |
| /* Readonly flag */ |
| #define READONLY 1 |
| #define RO READONLY /* Shorthand */ |
| |
| object *getmember PROTO((char *, struct memberlist *, char *)); |
| int setmember PROTO((char *, struct memberlist *, char *, object *)); |