Include/asdl.h

   1 #ifndef Py_ASDL_H
   2 #define Py_ASDL_H
   3
   4 typedef PyObject * identifier;
   5 typedef PyObject * string;
   6 typedef PyObject * object;
   7
   8 typedef enum {false, true} bool;
   9
  10 /* It would be nice if the code generated by asdl_c.py was completely
  11    independent of Python, but it is a goal the requires too much work
  12    at this stage.  So, for example, I'll represent identifiers as
  13    interned Python strings.
  14 */
  15
  16 /* XXX A sequence should be typed so that its use can be typechecked. */
  17
  18 /* XXX We shouldn't pay for offset when we don't need APPEND. */
  19
  20 typedef struct {
  21     int size;
  22     int offset;
  23     void *elements[1];
  24 } asdl_seq;
  25
  26 asdl_seq *asdl_seq_new(int size, PyArena *arena);
  27 void asdl_seq_free(asdl_seq *);
  28
  29 #ifdef Py_DEBUG
  30 #define asdl_seq_GET(S, I) (S)->elements[(I)]
  31 #define asdl_seq_SET(S, I, V) { \
  32         int _asdl_i = (I); \
  33         assert((S) && _asdl_i < (S)->size); \
  34         (S)->elements[_asdl_i] = (V); \
  35 }
  36 #define asdl_seq_APPEND(S, V) { \
  37         assert((S) && (S)->offset < (S)->size); \
  38         (S)->elements[(S)->offset++] = (V); \
  39 }
  40 #else
  41 #define asdl_seq_GET(S, I) (S)->elements[(I)]
  42 #define asdl_seq_SET(S, I, V) (S)->elements[I] = (V)
  43 #define asdl_seq_APPEND(S, V) (S)->elements[(S)->offset++] = (V)
  44 #endif
  45 #define asdl_seq_LEN(S) ((S) == NULL ? 0 : (S)->size)
  46
  47 #endif /* !Py_ASDL_H */