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      1 #ifndef Py_ASDL_H
      2 #define Py_ASDL_H
      3 
      4 typedef PyObject * identifier;
      5 typedef PyObject * string;
      6 typedef PyObject * bytes;
      7 typedef PyObject * object;
      8 typedef PyObject * singleton;
      9 typedef PyObject * constant;
     10 
     11 /* It would be nice if the code generated by asdl_c.py was completely
     12    independent of Python, but it is a goal the requires too much work
     13    at this stage.  So, for example, I'll represent identifiers as
     14    interned Python strings.
     15 */
     16 
     17 /* XXX A sequence should be typed so that its use can be typechecked. */
     18 
     19 typedef struct {
     20     Py_ssize_t size;
     21     void *elements[1];
     22 } asdl_seq;
     23 
     24 typedef struct {
     25     Py_ssize_t size;
     26     int elements[1];
     27 } asdl_int_seq;
     28 
     29 asdl_seq *_Py_asdl_seq_new(Py_ssize_t size, PyArena *arena);
     30 asdl_int_seq *_Py_asdl_int_seq_new(Py_ssize_t size, PyArena *arena);
     31 
     32 #define asdl_seq_GET(S, I) (S)->elements[(I)]
     33 #define asdl_seq_LEN(S) ((S) == NULL ? 0 : (S)->size)
     34 #ifdef Py_DEBUG
     35 #define asdl_seq_SET(S, I, V) \
     36     do { \
     37         Py_ssize_t _asdl_i = (I); \
     38         assert((S) != NULL); \
     39         assert(_asdl_i < (S)->size); \
     40         (S)->elements[_asdl_i] = (V); \
     41     } while (0)
     42 #else
     43 #define asdl_seq_SET(S, I, V) (S)->elements[I] = (V)
     44 #endif
     45 
     46 #endif /* !Py_ASDL_H */
     47