1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 2018 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 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);
36 struct group_open_item *group_open_item_create_nocopy (char *command_name);
38 /* A group_close item. */
39 struct group_close_item
41 struct output_item output_item;
43 struct group_close_item *group_close_item_create (void);
45 /* This boilerplate for group_open_item, a subclass of output_item, was
46 autogenerated by mk-class-boilerplate. */
49 #include "libpspp/cast.h"
51 extern const struct output_item_class group_open_item_class;
53 /* Returns true if SUPER is a group_open_item, otherwise false. */
55 is_group_open_item (const struct output_item *super)
57 return super->class == &group_open_item_class;
60 /* Returns SUPER converted to group_open_item. SUPER must be a
61 group_open_item, as reported by is_group_open_item. */
62 static inline struct group_open_item *
63 to_group_open_item (const struct output_item *super)
65 assert (is_group_open_item (super));
66 return UP_CAST (super, struct group_open_item, output_item);
69 /* Returns INSTANCE converted to output_item. */
70 static inline struct output_item *
71 group_open_item_super (const struct group_open_item *instance)
73 return CONST_CAST (struct output_item *, &instance->output_item);
76 /* Increments INSTANCE's reference count and returns INSTANCE. */
77 static inline struct group_open_item *
78 group_open_item_ref (const struct group_open_item *instance)
80 return to_group_open_item (output_item_ref (&instance->output_item));
83 /* Decrements INSTANCE's reference count, then destroys INSTANCE if
84 the reference count is now zero. */
86 group_open_item_unref (struct group_open_item *instance)
88 output_item_unref (&instance->output_item);
91 /* Returns true if INSTANCE's reference count is greater than 1,
94 group_open_item_is_shared (const struct group_open_item *instance)
96 return output_item_is_shared (&instance->output_item);
99 void group_open_item_submit (struct group_open_item *);
101 /* This boilerplate for group_close_item, a subclass of output_item, was
102 autogenerated by mk-class-boilerplate. */
105 #include "libpspp/cast.h"
107 extern const struct output_item_class group_close_item_class;
109 /* Returns true if SUPER is a group_close_item, otherwise false. */
111 is_group_close_item (const struct output_item *super)
113 return super->class == &group_close_item_class;
116 /* Returns SUPER converted to group_close_item. SUPER must be a
117 group_close_item, as reported by is_group_close_item. */
118 static inline struct group_close_item *
119 to_group_close_item (const struct output_item *super)
121 assert (is_group_close_item (super));
122 return UP_CAST (super, struct group_close_item, output_item);
125 /* Returns INSTANCE converted to output_item. */
126 static inline struct output_item *
127 group_close_item_super (const struct group_close_item *instance)
129 return CONST_CAST (struct output_item *, &instance->output_item);
132 /* Increments INSTANCE's reference count and returns INSTANCE. */
133 static inline struct group_close_item *
134 group_close_item_ref (const struct group_close_item *instance)
136 return to_group_close_item (output_item_ref (&instance->output_item));
139 /* Decrements INSTANCE's reference count, then destroys INSTANCE if
140 the reference count is now zero. */
142 group_close_item_unref (struct group_close_item *instance)
144 output_item_unref (&instance->output_item);
147 /* Returns true if INSTANCE's reference count is greater than 1,
150 group_close_item_is_shared (const struct group_close_item *instance)
152 return output_item_is_shared (&instance->output_item);
155 void group_close_item_submit (struct group_close_item *);
157 #endif /* output/group-item.h */