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 extern DL_IMPORT(node *) PyNode_New(int type);
  19 extern DL_IMPORT(int) PyNode_AddChild(node *n, int type,
  20                                       char *str, int lineno);
  21 extern DL_IMPORT(void) PyNode_Free(node *n);
  22
  23 /* Node access functions */
  24 #define NCH(n)          ((n)->n_nchildren)
  25 #define CHILD(n, i)     (&(n)->n_child[i])
  26 #define TYPE(n)         ((n)->n_type)
  27 #define STR(n)          ((n)->n_str)
  28
  29 /* Assert that the type of a node is what we expect */
  30 #ifndef Py_DEBUG
  31 #define REQ(n, type) { /*pass*/ ; }
  32 #else
  33 #define REQ(n, type) \
  34         { if (TYPE(n) != (type)) { \
  35             fprintf(stderr, "FATAL: node type %d, required %d\n", \
  36                     TYPE(n), type); \
  37             abort(); \
  38         } }
  39 #endif
  40
  41 extern DL_IMPORT(void) PyNode_ListTree(node *);
  42
  43 #ifdef __cplusplus
  44 }
  45 #endif
  46 #endif /* !Py_NODE_H */