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/* Parse tree node interface */
#ifndef Ta3_NODE_H
#define Ta3_NODE_H
#ifdef __cplusplus
extern "C" {
#endif
typedef struct _node {
short n_type;
char *n_str;
int n_lineno;
int n_col_offset;
int n_nchildren;
struct _node *n_child;
} node;
extern node * Ta3Node_New(int type);
extern int Ta3Node_AddChild(node *n, int type,
char *str, int lineno, int col_offset);
extern void Ta3Node_Free(node *n);
#ifndef Py_LIMITED_API
extern Py_ssize_t _Ta3Node_SizeOf(node *n);
#endif
/* Node access functions */
#define NCH(n) ((n)->n_nchildren)
#define CHILD(n, i) (&(n)->n_child[i])
#define RCHILD(n, i) (CHILD(n, NCH(n) + i))
#define TYPE(n) ((n)->n_type)
#define STR(n) ((n)->n_str)
#define LINENO(n) ((n)->n_lineno)
/* Assert that the type of a node is what we expect */
#define REQ(n, type) assert(TYPE(n) == (type))
extern void PyNode_ListTree(node *);
#ifdef __cplusplus
}
#endif
#endif /* !Ta3_NODE_H */
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