blob: f3b42205b6f3ab9b42a9ba12f466ad7cf7b175e7 [file] [log] [blame]
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package java.nio;
/**
* ShortArrayBuffer, ReadWriteShortArrayBuffer and ReadOnlyShortArrayBuffer
* compose the implementation of array based short buffers.
* <p>
* ReadWriteShortArrayBuffer extends ShortArrayBuffer with all the write
* methods.
* </p>
* <p>
* This class is marked final for runtime performance.
* </p>
*
*/
final class ReadWriteShortArrayBuffer extends ShortArrayBuffer {
static ReadWriteShortArrayBuffer copy(ShortArrayBuffer other,
int markOfOther) {
ReadWriteShortArrayBuffer buf = new ReadWriteShortArrayBuffer(other
.capacity(), other.backingArray, other.offset);
buf.limit = other.limit();
buf.position = other.position();
buf.mark = markOfOther;
return buf;
}
ReadWriteShortArrayBuffer(short[] array) {
super(array);
}
ReadWriteShortArrayBuffer(int capacity) {
super(capacity);
}
ReadWriteShortArrayBuffer(int capacity, short[] backingArray,
int arrayOffset) {
super(capacity, backingArray, arrayOffset);
}
@Override
public ShortBuffer asReadOnlyBuffer() {
return ReadOnlyShortArrayBuffer.copy(this, mark);
}
@Override
public ShortBuffer compact() {
System.arraycopy(backingArray, position + offset, backingArray, offset,
remaining());
position = limit - position;
limit = capacity;
mark = UNSET_MARK;
return this;
}
@Override
public ShortBuffer duplicate() {
return copy(this, mark);
}
@Override
public boolean isReadOnly() {
return false;
}
@Override
protected short[] protectedArray() {
return backingArray;
}
@Override
protected int protectedArrayOffset() {
return offset;
}
@Override
protected boolean protectedHasArray() {
return true;
}
@Override
public ShortBuffer put(short c) {
if (position == limit) {
throw new BufferOverflowException();
}
backingArray[offset + position++] = c;
return this;
}
@Override
public ShortBuffer put(int index, short c) {
if (index < 0 || index >= limit) {
throw new IndexOutOfBoundsException();
}
backingArray[offset + index] = c;
return this;
}
@Override
public ShortBuffer put(short[] src, int off, int len) {
int length = src.length;
if (off < 0 || len < 0 || (long) off + (long) len > length) {
throw new IndexOutOfBoundsException();
}
if (len > remaining()) {
throw new BufferOverflowException();
}
System.arraycopy(src, off, backingArray, offset + position, len);
position += len;
return this;
}
@Override
public ShortBuffer slice() {
return new ReadWriteShortArrayBuffer(remaining(), backingArray, offset
+ position);
}
}