java.nio.ReadWriteCharArrayBuffer Maven / Gradle / Ivy
/*
* 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;
/**
* CharArrayBuffer, ReadWriteCharArrayBuffer and ReadOnlyCharArrayBuffer compose
* the implementation of array based char buffers.
*
* ReadWriteCharArrayBuffer extends CharArrayBuffer with all the write methods.
*
*
* This class is marked final for runtime performance.
*
*
*/
final class ReadWriteCharArrayBuffer extends CharArrayBuffer {
static ReadWriteCharArrayBuffer copy(CharArrayBuffer other, int markOfOther) {
ReadWriteCharArrayBuffer buf =
new ReadWriteCharArrayBuffer(other.capacity(), other.backingArray, other.offset);
buf.limit = other.limit;
buf.position = other.position();
buf.mark = markOfOther;
return buf;
}
ReadWriteCharArrayBuffer(char[] array) {
super(array);
}
ReadWriteCharArrayBuffer(int capacity) {
super(capacity);
}
ReadWriteCharArrayBuffer(int capacity, char[] backingArray, int arrayOffset) {
super(capacity, backingArray, arrayOffset);
}
@Override
public CharBuffer asReadOnlyBuffer() {
return ReadOnlyCharArrayBuffer.copy(this, mark);
}
@Override
public CharBuffer compact() {
System.arraycopy(backingArray, position + offset, backingArray, offset, remaining());
position = limit - position;
limit = capacity;
mark = UNSET_MARK;
return this;
}
@Override
public CharBuffer duplicate() {
return copy(this, mark);
}
@Override
public boolean isReadOnly() {
return false;
}
@Override char[] protectedArray() {
return backingArray;
}
@Override int protectedArrayOffset() {
return offset;
}
@Override boolean protectedHasArray() {
return true;
}
@Override
public CharBuffer put(char c) {
if (position == limit) {
throw new BufferOverflowException();
}
backingArray[offset + position++] = c;
return this;
}
@Override
public CharBuffer put(int index, char c) {
checkIndex(index);
backingArray[offset + index] = c;
return this;
}
@Override
public CharBuffer put(char[] src, int srcOffset, int charCount) {
if (charCount > remaining()) {
throw new BufferOverflowException();
}
System.arraycopy(src, srcOffset, backingArray, offset + position, charCount);
position += charCount;
return this;
}
@Override
public CharBuffer slice() {
return new ReadWriteCharArrayBuffer(remaining(), backingArray, offset + position);
}
}