9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 
26 package java.lang.foreign;
27 
28 import java.util.List;
29 import jdk.internal.javac.PreviewFeature;
30 
31 /**
32  * A compound layout that is an aggregation of multiple, heterogeneous <em>member layouts</em>. There are two ways in which member layouts
33  * can be combined: if member layouts are laid out one after the other, the resulting group layout is a
34  * {@linkplain StructLayout struct layout}; conversely, if all member layouts are laid out at the same starting offset,
35  * the resulting group layout is a {@linkplain UnionLayout union layout}.
36  *
37  * @implSpec
38  * This class is immutable, thread-safe and <a href="{@docRoot}/java.base/java/lang/doc-files/ValueBased.html">value-based</a>.
39  *
40  * @sealedGraph
41  * @since 19
42  */
43 @PreviewFeature(feature=PreviewFeature.Feature.FOREIGN)
44 public sealed interface GroupLayout extends MemoryLayout permits StructLayout, UnionLayout {
45 
46     /**
47      * {@return the member layouts of this group layout}
48      *
49      * @apiNote the order in which member layouts are returned is the same order in which member layouts have
50      * been passed to one of the group layout factory methods (see {@link MemoryLayout#structLayout(MemoryLayout...)},
51      * {@link MemoryLayout#unionLayout(MemoryLayout...)}).
52      */
53     List<MemoryLayout> memberLayouts();
54 
55     /**
56      * {@inheritDoc}
57      */
58     @Override
59     GroupLayout withName(String name);
60 
61     /**
62      * {@inheritDoc}
63      */

 9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 
26 package java.lang.foreign;
27 
28 import java.util.List;

29 
30 /**
31  * A compound layout that is an aggregation of multiple, heterogeneous <em>member layouts</em>. There are two ways in which member layouts
32  * can be combined: if member layouts are laid out one after the other, the resulting group layout is a
33  * {@linkplain StructLayout struct layout}; conversely, if all member layouts are laid out at the same starting offset,
34  * the resulting group layout is a {@linkplain UnionLayout union layout}.
35  *
36  * @implSpec
37  * This class is immutable, thread-safe and <a href="{@docRoot}/java.base/java/lang/doc-files/ValueBased.html">value-based</a>.
38  *
39  * @sealedGraph
40  * @since 22
41  */

42 public sealed interface GroupLayout extends MemoryLayout permits StructLayout, UnionLayout {
43 
44     /**
45      * {@return the member layouts of this group layout}
46      *
47      * @apiNote the order in which member layouts are returned is the same order in which member layouts have
48      * been passed to one of the group layout factory methods (see {@link MemoryLayout#structLayout(MemoryLayout...)},
49      * {@link MemoryLayout#unionLayout(MemoryLayout...)}).
50      */
51     List<MemoryLayout> memberLayouts();
52 
53     /**
54      * {@inheritDoc}
55      */
56     @Override
57     GroupLayout withName(String name);
58 
59     /**
60      * {@inheritDoc}
61      */