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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
13Permission to use, copy, modify, and distribute this software and its
14documentation for any purpose and without fee is hereby granted,
15provided that the above copyright notice appear in all copies and that
16both that copyright notice and this permission notice appear in
17supporting documentation, and that the names of Stichting Mathematisch
18Centrum or CWI not be used in advertising or publicity pertaining to
19distribution of the software without specific, written prior permission.
20
21STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
22THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
23FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
24FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
25WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
26ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
27OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
28
29******************************************************************/
30
Guido van Rossum85a5fbb1990-10-14 12:07:46 +000031/* Parse tree node interface */
32
33typedef struct _node {
Guido van Rossumb4f066d1994-08-23 13:37:43 +000034 short n_type;
Guido van Rossum85a5fbb1990-10-14 12:07:46 +000035 char *n_str;
Guido van Rossumb4f066d1994-08-23 13:37:43 +000036 short n_lineno;
37 short n_nchildren;
Guido van Rossum85a5fbb1990-10-14 12:07:46 +000038 struct _node *n_child;
39} node;
40
Guido van Rossumcaa63801995-01-12 11:45:45 +000041extern node *PyNode_New Py_PROTO((int type));
42extern node *PyNode_AddChild Py_PROTO((node *n, int type, char *str, int lineno));
43extern void PyNode_Free Py_PROTO((node *n));
Guido van Rossum85a5fbb1990-10-14 12:07:46 +000044
45/* Node access functions */
46#define NCH(n) ((n)->n_nchildren)
47#define CHILD(n, i) (&(n)->n_child[i])
48#define TYPE(n) ((n)->n_type)
49#define STR(n) ((n)->n_str)
50
51/* Assert that the type of a node is what we expect */
52#ifndef DEBUG
53#define REQ(n, type) { /*pass*/ ; }
54#else
55#define REQ(n, type) \
56 { if (TYPE(n) != (type)) { \
57 fprintf(stderr, "FATAL: node type %d, required %d\n", \
58 TYPE(n), type); \
59 abort(); \
60 } }
61#endif
Guido van Rossum3f5da241990-12-20 15:06:42 +000062
Guido van Rossumcaa63801995-01-12 11:45:45 +000063extern void PyNode_ListTree Py_PROTO((node *));
Guido van Rossuma3309961993-07-28 09:05:47 +000064
65#ifdef __cplusplus
66}
67#endif
68#endif /* !Py_NODE_H */