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/* Parse tree node interface */

#ifndef Py_NODE_H

#define Py_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;

PyAPI_FUNC(node *) PyNode_New(int type);

PyAPI_FUNC(int) PyNode_AddChild(node *n, int type,

char *str, int lineno, int col_offset);

PyAPI_FUNC(void) PyNode_Free(node *n);

#ifndef Py_LIMITED_API

Py_ssize_t _PyNode_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)

/* Assert that the type of a node is what we expect */

#define REQ(n, type) assert(TYPE(n) == (type))

PyAPI_FUNC(void) PyNode_ListTree(node *);

#ifdef __cplusplus

}

#endif

#endif /* !Py_NODE_H */

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