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_col_offset;
15     int			n_nchildren;
16     struct _node	*n_child;
17 } node;
18 
19 PyAPI_FUNC(node *) PyNode_New(int type);
20 PyAPI_FUNC(int) PyNode_AddChild(node *n, int type,
21                                       char *str, int lineno, int col_offset);
22 PyAPI_FUNC(void) PyNode_Free(node *n);
23 #ifndef Py_LIMITED_API
24 PyAPI_FUNC(Py_ssize_t) _PyNode_SizeOf(node *n);
25 #endif
26 
27 /* Node access functions */
28 #define NCH(n)		((n)->n_nchildren)
29 
30 #define CHILD(n, i)	(&(n)->n_child[i])
31 #define RCHILD(n, i)	(CHILD(n, NCH(n) + i))
32 #define TYPE(n)		((n)->n_type)
33 #define STR(n)		((n)->n_str)
34 #define LINENO(n)       ((n)->n_lineno)
35 
36 /* Assert that the type of a node is what we expect */
37 #define REQ(n, type) assert(TYPE(n) == (type))
38 
39 PyAPI_FUNC(void) PyNode_ListTree(node *);
40 
41 #ifdef __cplusplus
42 }
43 #endif
44 #endif /* !Py_NODE_H */
45