1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 1997-9, 2000, 2006, 2009, 2011 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 #ifndef TRANSFORMATIONS_H
18 #define TRANSFORMATIONS_H 1
22 #include "data/case.h"
24 /* One transformation. */
28 TRNS_CONTINUE, /* Continue to next transformation. */
29 TRNS_BREAK, /* Break out of LOOP. */
30 TRNS_DROP_CASE, /* Drop this case. */
31 TRNS_ERROR, /* A serious error, so stop the procedure. */
32 TRNS_END_CASE, /* Skip to next case. INPUT PROGRAM only. */
33 TRNS_END_FILE /* End of input. INPUT PROGRAM only. */
40 const char *name; /* For debugging. */
41 enum trns_result (*execute) (void *aux, struct ccase **, casenumber);
42 bool (*destroy) (void *aux);
47 const struct trns_class *class;
51 /* A chain of transformations. */
55 struct transformation *xforms;
60 #define TRNS_CHAIN_INIT { .n = 0 }
62 void trns_chain_init (struct trns_chain *);
63 bool trns_chain_uninit (struct trns_chain *);
65 bool trns_chain_clear (struct trns_chain *);
67 void trns_chain_append (struct trns_chain *, const struct transformation *);
68 void trns_chain_splice (struct trns_chain *, struct trns_chain *);
70 enum trns_result trns_chain_execute (const struct trns_chain *,
71 casenumber case_num, struct ccase **);
73 #endif /* transformations.h */