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/* Parse tree node interface */

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#ifndef Py_NODE_H

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#define Py_NODE_H

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#ifdef __cplusplus

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extern "C" {

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#endif

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typedef struct _node {

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short n_type;

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char *n_str;

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int n_lineno;

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int n_col_offset;

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int n_nchildren;

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struct _node *n_child;

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} node;

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PyAPI_FUNC(node *) PyNode_New(int type);

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

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char *str, int lineno, int col_offset);

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PyAPI_FUNC(void) PyNode_Free(node *n);

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PyAPI_FUNC(Py_ssize_t) _PyNode_SizeOf(node *n);

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/* Node access functions */

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

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

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

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

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

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

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

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PyAPI_FUNC(void) PyNode_ListTree(node *);

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#ifdef __cplusplus

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}

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#endif

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#endif /* !Py_NODE_H */

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