1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 2018 Free Sonftware 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 OUTPUT_GROUP_ITEM_H
18 #define OUTPUT_GROUP_ITEM_H 1
22 A group-open item marks the beginning of a group of related output items. A
23 later group-close item ends the group. Groups can nest. */
26 #include "output/output-item.h"
28 /* A group_open item. */
29 struct group_open_item
31 struct output_item output_item;
35 struct group_open_item *group_open_item_create (const char *command_name);
37 /* A group_close item. */
38 struct group_close_item
40 struct output_item output_item;
42 struct group_close_item *group_close_item_create (void);
44 /* This boilerplate for group_open_item, a subclass of output_item, was
45 autogenerated by mk-class-boilerplate. */
48 #include "libpspp/cast.h"
50 extern const struct output_item_class group_open_item_class;
52 /* Returns true if SUPER is a group_open_item, otherwise false. */
54 is_group_open_item (const struct output_item *super)
56 return super->class == &group_open_item_class;
59 /* Returns SUPER converted to group_open_item. SUPER must be a
60 group_open_item, as reported by is_group_open_item. */
61 static inline struct group_open_item *
62 to_group_open_item (const struct output_item *super)
64 assert (is_group_open_item (super));
65 return UP_CAST (super, struct group_open_item, output_item);
68 /* Returns INSTANCE converted to output_item. */
69 static inline struct output_item *
70 group_open_item_super (const struct group_open_item *instance)
72 return CONST_CAST (struct output_item *, &instance->output_item);
75 /* Increments INSTANCE's reference count and returns INSTANCE. */
76 static inline struct group_open_item *
77 group_open_item_ref (const struct group_open_item *instance)
79 return to_group_open_item (output_item_ref (&instance->output_item));
82 /* Decrements INSTANCE's reference count, then destroys INSTANCE if
83 the reference count is now zero. */
85 group_open_item_unref (struct group_open_item *instance)
87 output_item_unref (&instance->output_item);
90 /* Returns true if INSTANCE's reference count is greater than 1,
93 group_open_item_is_shared (const struct group_open_item *instance)
95 return output_item_is_shared (&instance->output_item);
98 void group_open_item_submit (struct group_open_item *);
100 /* This boilerplate for group_close_item, a subclass of output_item, was
101 autogenerated by mk-class-boilerplate. */
104 #include "libpspp/cast.h"
106 extern const struct output_item_class group_close_item_class;
108 /* Returns true if SUPER is a group_close_item, otherwise false. */
110 is_group_close_item (const struct output_item *super)
112 return super->class == &group_close_item_class;
115 /* Returns SUPER converted to group_close_item. SUPER must be a
116 group_close_item, as reported by is_group_close_item. */
117 static inline struct group_close_item *
118 to_group_close_item (const struct output_item *super)
120 assert (is_group_close_item (super));
121 return UP_CAST (super, struct group_close_item, output_item);
124 /* Returns INSTANCE converted to output_item. */
125 static inline struct output_item *
126 group_close_item_super (const struct group_close_item *instance)
128 return CONST_CAST (struct output_item *, &instance->output_item);
131 /* Increments INSTANCE's reference count and returns INSTANCE. */
132 static inline struct group_close_item *
133 group_close_item_ref (const struct group_close_item *instance)
135 return to_group_close_item (output_item_ref (&instance->output_item));
138 /* Decrements INSTANCE's reference count, then destroys INSTANCE if
139 the reference count is now zero. */
141 group_close_item_unref (struct group_close_item *instance)
143 output_item_unref (&instance->output_item);
146 /* Returns true if INSTANCE's reference count is greater than 1,
149 group_close_item_is_shared (const struct group_close_item *instance)
151 return output_item_is_shared (&instance->output_item);
154 void group_close_item_submit (struct group_close_item *);
156 #endif /* output/group-item.h */