1
2/* Parse tree node interface */
3
4#ifndef Py_NODE_H
5#define Py_NODE_H
6#ifdef __cplusplus
7extern "C" {
8#endif
9
10typedef 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
19PyAPI_FUNC(node *) PyNode_New(int type);
20PyAPI_FUNC(int) PyNode_AddChild(node *n, int type,
21                                      char *str, int lineno, int col_offset);
22PyAPI_FUNC(void) PyNode_Free(node *n);
23PyAPI_FUNC(Py_ssize_t) _PyNode_SizeOf(node *n);
24
25/* Node access functions */
26#define NCH(n)		((n)->n_nchildren)
27
28#define CHILD(n, i)	(&(n)->n_child[i])
29#define RCHILD(n, i)	(CHILD(n, NCH(n) + i))
30#define TYPE(n)		((n)->n_type)
31#define STR(n)		((n)->n_str)
32
33/* Assert that the type of a node is what we expect */
34#define REQ(n, type) assert(TYPE(n) == (type))
35
36PyAPI_FUNC(void) PyNode_ListTree(node *);
37
38#ifdef __cplusplus
39}
40#endif
41#endif /* !Py_NODE_H */
42