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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/java/nio/ShortBufferImpl.java
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+/* ShortBufferImpl.java --
+ Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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, or (at your option)
+any later version.
+
+GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package java.nio;
+
+/**
+ * This is a Heap memory implementation
+ */
+final class ShortBufferImpl extends ShortBuffer
+{
+ private final boolean readOnly;
+
+ ShortBufferImpl (int capacity)
+ {
+ this (new short [capacity], 0, capacity, capacity, 0, -1, false);
+ }
+
+ ShortBufferImpl (short[] buffer, int offset, int capacity,
+ int limit, int position, int mark, boolean readOnly)
+ {
+ super (capacity, limit, position, mark, null, buffer, offset);
+ this.readOnly = readOnly;
+ }
+
+ public boolean isReadOnly ()
+ {
+ return readOnly;
+ }
+
+ public ShortBuffer slice ()
+ {
+ return new ShortBufferImpl (backing_buffer, array_offset + position (),
+ remaining (), remaining (), 0, -1, isReadOnly ());
+ }
+
+ public ShortBuffer duplicate ()
+ {
+ return new ShortBufferImpl (backing_buffer, array_offset, capacity (),
+ limit (), position (), mark, isReadOnly ());
+ }
+
+ public ShortBuffer asReadOnlyBuffer ()
+ {
+ return new ShortBufferImpl (backing_buffer, array_offset, capacity (), limit (),
+ position (), mark, true);
+ }
+
+ public ShortBuffer compact ()
+ {
+ checkIfReadOnly();
+ mark = -1;
+ int p = position();
+ int n = limit() - p;
+ if (n > 0)
+ {
+ System.arraycopy(backing_buffer, array_offset + p,
+ backing_buffer, array_offset, n);
+ }
+ position(n);
+ limit(capacity());
+ return this;
+ }
+
+ public boolean isDirect ()
+ {
+ return false;
+ }
+
+ /**
+ * Reads the <code>short</code> at this buffer's current position,
+ * and then increments the position.
+ *
+ * @exception BufferUnderflowException If there are no remaining
+ * <code>short</code>s in this buffer.
+ */
+ public short get ()
+ {
+ checkForUnderflow();
+
+ short result = backing_buffer [position ()];
+ position (position () + 1);
+ return result;
+ }
+
+ /**
+ * Relative put method. Writes <code>value</code> to the next position
+ * in the buffer.
+ *
+ * @exception BufferOverflowException If there no remaining
+ * space in this buffer.
+ * @exception ReadOnlyBufferException If this buffer is read-only.
+ */
+ public ShortBuffer put (short value)
+ {
+ checkIfReadOnly();
+ checkForOverflow();
+
+ backing_buffer [position ()] = value;
+ position (position () + 1);
+ return this;
+ }
+
+ /**
+ * Absolute get method. Reads the <code>short</code> at position
+ * <code>index</code>.
+ *
+ * @exception IndexOutOfBoundsException If index is negative or not smaller
+ * than the buffer's limit.
+ */
+ public short get (int index)
+ {
+ checkIndex(index);
+
+ return backing_buffer [index];
+ }
+
+ /**
+ * Absolute put method. Writes <code>value</code> to position
+ * <code>index</code> in the buffer.
+ *
+ * @exception IndexOutOfBoundsException If index is negative or not smaller
+ * than the buffer's limit.
+ * @exception ReadOnlyBufferException If this buffer is read-only.
+ */
+ public ShortBuffer put (int index, short value)
+ {
+ checkIfReadOnly();
+ checkIndex(index);
+
+ backing_buffer [index] = value;
+ return this;
+ }
+
+ public ByteOrder order ()
+ {
+ return ByteOrder.nativeOrder ();
+ }
+}