1 /* PSPP - computes sample statistics.
2 Copyright (C) 1997-9, 2000, 2006 Free Software Foundation, Inc.
3 Written by Ben Pfaff <blp@gnu.org>.
5 This program is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 This program is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
26 #include <data/transformations.h>
27 #include <libpspp/compiler.h>
37 /* Transformations. */
39 void add_transformation (struct dataset *ds,
40 trns_proc_func *, trns_free_func *, void *);
41 void add_transformation_with_finalizer (struct dataset *ds,
44 trns_free_func *, void *);
45 size_t next_transformation (const struct dataset *ds);
47 void discard_variables (struct dataset *ds);
51 bool proc_cancel_all_transformations (struct dataset *ds);
52 struct trns_chain *proc_capture_transformations (struct dataset *ds);
54 void proc_start_temporary_transformations (struct dataset *ds);
55 bool proc_in_temporary_transformations (const struct dataset *ds);
56 bool proc_make_temporary_transformations_permanent (struct dataset *ds);
57 bool proc_cancel_temporary_transformations (struct dataset *ds);
62 struct dataset *create_dataset (void);
63 void destroy_dataset (struct dataset *);
65 void proc_set_source (struct dataset *ds, struct case_source *);
66 bool proc_has_source (const struct dataset *ds);
68 void proc_set_sink (struct dataset *ds, struct case_sink *);
69 struct casefile *proc_capture_output (struct dataset *ds);
71 typedef bool (*casefile_func_t) (const struct casefile *, void *);
72 typedef bool (*case_func_t) (const struct ccase *, void *);
73 typedef void (*begin_func_t) (const struct ccase *, void *);
77 bool procedure (struct dataset *ds, case_func_t, void *aux) WARN_UNUSED_RESULT;
79 bool procedure_with_splits (struct dataset *ds,
80 begin_func_t begin_func,
81 case_func_t proc_func,
82 void (*end_func) (void *),
85 bool multipass_procedure (struct dataset *ds, casefile_func_t, void *aux)
87 bool multipass_procedure_with_splits (struct dataset *ds,
88 bool (*) (const struct ccase *,
89 const struct casefile *,
96 time_t time_of_last_procedure (struct dataset *ds);
99 struct ccase *lagged_case (const struct dataset *ds, int n_before);
101 extern struct dataset *current_dataset;
103 inline struct dictionary *dataset_dict (const struct dataset *ds);
104 inline void dataset_set_dict ( struct dataset *ds, struct dictionary *dict);
106 inline int dataset_n_lag (const struct dataset *ds);
107 inline void dataset_set_n_lag (struct dataset *ds, int n_lag);
110 #endif /* procedure.h */