Include/node.h

   1
   2 /* Parse tree node interface */
   3
   4 #ifndef Py_NODE_H
   5 #define Py_NODE_H
   6 #ifdef __cplusplus
   7 extern "C" {
   8 #endif
   9
  10 typedef struct _node {
  11     short               n_type;
  12     char                *n_str;
  13     int                 n_lineno;
  14     int                 n_nchildren;
  15     struct _node        *n_child;
  16 } node;
  17
  18 PyAPI_FUNC(node *) PyNode_New(int type);
  19 PyAPI_FUNC(int) PyNode_AddChild(node *n, int type,
  20                                       char *str, int lineno);
  21 PyAPI_FUNC(void) PyNode_Free(node *n);
  22
  23 /* Node access functions */
  24 #define NCH(n)          ((n)->n_nchildren)
  25
  26 #define CHILD(n, i)     (&(n)->n_child[i])
  27 #define RCHILD(n, i)    (CHILD(n, NCH(n) + i))
  28 #define TYPE(n)         ((n)->n_type)
  29 #define STR(n)          ((n)->n_str)
  30
  31 /* Assert that the type of a node is what we expect */
  32 #define REQ(n, type) assert(TYPE(n) == (type))
  33
  34 PyAPI_FUNC(void) PyNode_ListTree(node *);
  35
  36 #ifdef __cplusplus
  37 }
  38 #endif
  39 #endif /* !Py_NODE_H */