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 

    24 /* Node access functions */

    25 #define NCH(n)		((n)->n_nchildren)

    26 	

    27 #define CHILD(n, i)	(&(n)->n_child[i])

    28 #define RCHILD(n, i)	(CHILD(n, NCH(n) + i))

    29 #define TYPE(n)		((n)->n_type)

    30 #define STR(n)		((n)->n_str)

    31 

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

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

    34 

    35 PyAPI_FUNC(void) PyNode_ListTree(node *);

    36 

    37 #ifdef __cplusplus

    38 }

    39 #endif

    40 #endif /* !Py_NODE_H */