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Guido van Rossuma3309961993-07-28 09:05:47 +00001#ifndef Py_NODE_H
2#define Py_NODE_H
3#ifdef __cplusplus
4extern "C" {
5#endif
6
Guido van Rossumf70e43a1991-02-19 12:39:46 +00007/***********************************************************
Guido van Rossum5799b521995-01-04 19:06:22 +00008Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
9The Netherlands.
Guido van Rossumf70e43a1991-02-19 12:39:46 +000010
11 All Rights Reserved
12
Guido van Rossumd266eb41996-10-25 14:44:06 +000013Permission to use, copy, modify, and distribute this software and its
14documentation for any purpose and without fee is hereby granted,
Guido van Rossumf70e43a1991-02-19 12:39:46 +000015provided that the above copyright notice appear in all copies and that
Guido van Rossumd266eb41996-10-25 14:44:06 +000016both that copyright notice and this permission notice appear in
Guido van Rossumf70e43a1991-02-19 12:39:46 +000017supporting documentation, and that the names of Stichting Mathematisch
Guido van Rossumd266eb41996-10-25 14:44:06 +000018Centrum or CWI or Corporation for National Research Initiatives or
19CNRI not be used in advertising or publicity pertaining to
20distribution of the software without specific, written prior
21permission.
Guido van Rossumf70e43a1991-02-19 12:39:46 +000022
Guido van Rossumd266eb41996-10-25 14:44:06 +000023While CWI is the initial source for this software, a modified version
24is made available by the Corporation for National Research Initiatives
25(CNRI) at the Internet address ftp://ftp.python.org.
26
27STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
28REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
29MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
30CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
31DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
32PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
33TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
34PERFORMANCE OF THIS SOFTWARE.
Guido van Rossumf70e43a1991-02-19 12:39:46 +000035
36******************************************************************/
37
Guido van Rossum85a5fbb1990-10-14 12:07:46 +000038/* Parse tree node interface */
39
40typedef struct _node {
Guido van Rossumb4f066d1994-08-23 13:37:43 +000041 short n_type;
Guido van Rossum85a5fbb1990-10-14 12:07:46 +000042 char *n_str;
Guido van Rossumb4f066d1994-08-23 13:37:43 +000043 short n_lineno;
44 short n_nchildren;
Guido van Rossum85a5fbb1990-10-14 12:07:46 +000045 struct _node *n_child;
46} node;
47
Guido van Rossum43466ec1998-12-04 18:48:25 +000048extern DL_IMPORT(node *) PyNode_New Py_PROTO((int type));
49extern DL_IMPORT(node *) PyNode_AddChild Py_PROTO((node *n, int type, char *str, int lineno));
50extern DL_IMPORT(void) PyNode_Free Py_PROTO((node *n));
Guido van Rossum85a5fbb1990-10-14 12:07:46 +000051
52/* Node access functions */
53#define NCH(n) ((n)->n_nchildren)
54#define CHILD(n, i) (&(n)->n_child[i])
55#define TYPE(n) ((n)->n_type)
56#define STR(n) ((n)->n_str)
57
58/* Assert that the type of a node is what we expect */
Guido van Rossum408027e1996-12-30 16:17:54 +000059#ifndef Py_DEBUG
Guido van Rossum85a5fbb1990-10-14 12:07:46 +000060#define REQ(n, type) { /*pass*/ ; }
61#else
62#define REQ(n, type) \
63 { if (TYPE(n) != (type)) { \
64 fprintf(stderr, "FATAL: node type %d, required %d\n", \
65 TYPE(n), type); \
66 abort(); \
67 } }
68#endif
Guido van Rossum3f5da241990-12-20 15:06:42 +000069
Guido van Rossum43466ec1998-12-04 18:48:25 +000070extern DL_IMPORT(void) PyNode_ListTree Py_PROTO((node *));
Guido van Rossuma3309961993-07-28 09:05:47 +000071
72#ifdef __cplusplus
73}
74#endif
75#endif /* !Py_NODE_H */