-/* PSPP - computes sample statistics.
- Copyright (C) 1997-9, 2000, 2006 Free Software Foundation, Inc.
- Written by Ben Pfaff <blp@gnu.org>.
+/* PSPP - a program for statistical analysis.
+ Copyright (C) 1997-9, 2000, 2006, 2007, 2009, 2010, 2011 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef PROCEDURE_H
#define PROCEDURE_H 1
#include <time.h>
#include <stdbool.h>
-#include <data/transformations.h>
-struct ccase;
-struct casefile;
-struct case_sink;
-struct case_source;
+#include "data/transformations.h"
+#include "libpspp/compiler.h"
-/* Dictionary produced by permanent and temporary transformations
- on data from the source. */
-extern struct dictionary *default_dict;
+struct casereader;
+struct dataset;
+struct dictionary;
\f
/* Transformations. */
-void add_transformation (trns_proc_func *, trns_free_func *, void *);
-void add_transformation_with_finalizer (trns_finalize_func *,
+void add_transformation (struct dataset *ds,
+ trns_proc_func *, trns_free_func *, void *);
+void add_transformation_with_finalizer (struct dataset *ds,
+ trns_finalize_func *,
trns_proc_func *,
trns_free_func *, void *);
-size_t next_transformation (void);
+size_t next_transformation (const struct dataset *ds);
-void discard_variables (void);
+bool proc_cancel_all_transformations (struct dataset *ds);
+struct trns_chain *proc_capture_transformations (struct dataset *ds);
-bool proc_cancel_all_transformations (void);
-struct trns_chain *proc_capture_transformations (void);
-
-void proc_start_temporary_transformations (void);
-bool proc_in_temporary_transformations (void);
-bool proc_make_temporary_transformations_permanent (void);
-bool proc_cancel_temporary_transformations (void);
+void proc_start_temporary_transformations (struct dataset *ds);
+bool proc_in_temporary_transformations (const struct dataset *ds);
+bool proc_make_temporary_transformations_permanent (struct dataset *ds);
+bool proc_cancel_temporary_transformations (struct dataset *ds);
\f
/* Procedures. */
-void proc_init (void);
-void proc_done (void);
-
-void proc_set_source (struct case_source *);
-bool proc_has_source (void);
-
-void proc_set_sink (struct case_sink *);
-struct casefile *proc_capture_output (void);
-
-bool procedure (bool (*proc_func) (struct ccase *, void *),
- void *aux);
-bool procedure_with_splits (void (*begin_func) (const struct ccase *, void *),
- bool (*proc_func) (const struct ccase *, void *),
- void (*end_func) (void *),
- void *aux);
-bool multipass_procedure (bool (*proc_func) (const struct casefile *, void *),
- void *aux);
-bool multipass_procedure_with_splits (bool (*) (const struct ccase *,
- const struct casefile *,
- void *),
- void *aux);
-time_t time_of_last_procedure (void);
+typedef void transformation_change_callback_func (bool non_empty, void *aux);
+
+struct dataset * create_dataset (void);
+
+void destroy_dataset (struct dataset *);
+
+void dataset_add_transform_change_callback (struct dataset *,
+ transformation_change_callback_func *, void *);
+
+void proc_discard_active_file (struct dataset *);
+void proc_set_active_file (struct dataset *,
+ struct casereader *, struct dictionary *);
+bool proc_set_active_file_data (struct dataset *, struct casereader *);
+bool proc_has_active_file (const struct dataset *ds);
+struct casereader *proc_extract_active_file_data (struct dataset *);
+
+void proc_discard_output (struct dataset *ds);
+
+bool proc_execute (struct dataset *ds);
+time_t time_of_last_procedure (struct dataset *ds);
+
+struct casereader *proc_open_filtering (struct dataset *, bool filter);
+struct casereader *proc_open (struct dataset *);
+bool proc_is_open (const struct dataset *);
+bool proc_commit (struct dataset *);
+
+bool dataset_end_of_command (struct dataset *);
\f
-/* Number of cases to lag. */
-extern int n_lag;
+struct dictionary *dataset_dict (const struct dataset *ds);
+const struct casereader *dataset_source (const struct dataset *ds);
+
+const struct ccase *lagged_case (const struct dataset *ds, int n_before);
+void dataset_need_lag (struct dataset *ds, int n_before);
+
+void dataset_set_callback (struct dataset *ds, void (*cb) (void *), void *);
-struct ccase *lagged_case (int n_before);
+void dataset_set_default_syntax_encoding (struct dataset *, const char *);
+const char *dataset_get_default_syntax_encoding (const struct dataset *);
#endif /* procedure.h */
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