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.nio;
27
28 import java.util.Spliterator;
29
30 /**
31 * A container for data of a specific primitive type.
32 *
33 * <p> A buffer is a linear, finite sequence of elements of a specific
34 * primitive type. Aside from its content, the essential properties of a
35 * buffer are its capacity, limit, and position: </p>
36 *
37 * <blockquote>
38 *
39 * <p> A buffer's <i>capacity</i> is the number of elements it contains. The
40 * capacity of a buffer is never negative and never changes. </p>
41 *
42 * <p> A buffer's <i>limit</i> is the index of the first element that should
43 * not be read or written. A buffer's limit is never negative and is never
44 * greater than its capacity. </p>
45 *
46 * <p> A buffer's <i>position</i> is the index of the next element to be
47 * read or written. A buffer's position is never negative and is never
48 * greater than its limit. </p>
518 */
519 final int nextPutIndex() { // package-private
520 if (position >= limit)
521 throw new BufferOverflowException();
522 return position++;
523 }
524
525 final int nextPutIndex(int nb) { // package-private
526 if (limit - position < nb)
527 throw new BufferOverflowException();
528 int p = position;
529 position += nb;
530 return p;
531 }
532
533 /**
534 * Checks the given index against the limit, throwing an {@link
535 * IndexOutOfBoundsException} if it is not smaller than the limit
536 * or is smaller than zero.
537 */
538 final int checkIndex(int i) { // package-private
539 if ((i < 0) || (i >= limit))
540 throw new IndexOutOfBoundsException();
541 return i;
542 }
543
544 final int checkIndex(int i, int nb) { // package-private
545 if ((i < 0) || (nb > limit - i))
546 throw new IndexOutOfBoundsException();
547 return i;
548 }
549
550 final int markValue() { // package-private
551 return mark;
552 }
553
554 final void truncate() { // package-private
555 mark = -1;
556 position = 0;
557 limit = 0;
|
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.nio;
27
28 import java.util.Spliterator;
29 import jdk.internal.HotSpotIntrinsicCandidate;
30
31 /**
32 * A container for data of a specific primitive type.
33 *
34 * <p> A buffer is a linear, finite sequence of elements of a specific
35 * primitive type. Aside from its content, the essential properties of a
36 * buffer are its capacity, limit, and position: </p>
37 *
38 * <blockquote>
39 *
40 * <p> A buffer's <i>capacity</i> is the number of elements it contains. The
41 * capacity of a buffer is never negative and never changes. </p>
42 *
43 * <p> A buffer's <i>limit</i> is the index of the first element that should
44 * not be read or written. A buffer's limit is never negative and is never
45 * greater than its capacity. </p>
46 *
47 * <p> A buffer's <i>position</i> is the index of the next element to be
48 * read or written. A buffer's position is never negative and is never
49 * greater than its limit. </p>
519 */
520 final int nextPutIndex() { // package-private
521 if (position >= limit)
522 throw new BufferOverflowException();
523 return position++;
524 }
525
526 final int nextPutIndex(int nb) { // package-private
527 if (limit - position < nb)
528 throw new BufferOverflowException();
529 int p = position;
530 position += nb;
531 return p;
532 }
533
534 /**
535 * Checks the given index against the limit, throwing an {@link
536 * IndexOutOfBoundsException} if it is not smaller than the limit
537 * or is smaller than zero.
538 */
539 @HotSpotIntrinsicCandidate
540 final int checkIndex(int i) { // package-private
541 if ((i < 0) || (i >= limit))
542 throw new IndexOutOfBoundsException();
543 return i;
544 }
545
546 final int checkIndex(int i, int nb) { // package-private
547 if ((i < 0) || (nb > limit - i))
548 throw new IndexOutOfBoundsException();
549 return i;
550 }
551
552 final int markValue() { // package-private
553 return mark;
554 }
555
556 final void truncate() { // package-private
557 mark = -1;
558 position = 0;
559 limit = 0;
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