ByteBufferImpl.java [plain text]
package java.nio;
final class ByteBufferImpl extends ByteBuffer
{
private boolean readOnly;
ByteBufferImpl (byte[] buffer, int offset, int capacity, int limit, int position, int mark, boolean readOnly)
{
super (capacity, limit, position, mark);
this.backing_buffer = buffer;
this.array_offset = offset;
this.readOnly = readOnly;
}
public CharBuffer asCharBuffer ()
{
return new CharViewBufferImpl (this, remaining() >> 1);
}
public ShortBuffer asShortBuffer ()
{
return new ShortViewBufferImpl (this, remaining() >> 1);
}
public IntBuffer asIntBuffer ()
{
return new IntViewBufferImpl (this, remaining() >> 2);
}
public LongBuffer asLongBuffer ()
{
return new LongViewBufferImpl (this, remaining() >> 3);
}
public FloatBuffer asFloatBuffer ()
{
return new FloatViewBufferImpl (this, remaining() >> 2);
}
public DoubleBuffer asDoubleBuffer ()
{
return new DoubleViewBufferImpl (this, remaining() >> 3);
}
public boolean isReadOnly ()
{
return readOnly;
}
public ByteBuffer slice ()
{
return new ByteBufferImpl (backing_buffer, array_offset + position (), remaining (), remaining (), 0, -1, isReadOnly ());
}
public ByteBuffer duplicate ()
{
return new ByteBufferImpl (backing_buffer, array_offset, capacity (), limit (), position (), mark, isReadOnly ());
}
public ByteBuffer asReadOnlyBuffer ()
{
return new ByteBufferImpl (backing_buffer, array_offset, capacity (), limit (), position (), mark, true);
}
void shiftDown (int dst_offset, int src_offset, int count)
{
System.arraycopy(backing_buffer, array_offset + src_offset,
backing_buffer, array_offset + dst_offset,
count);
}
public ByteBuffer compact ()
{
checkIfReadOnly();
mark = -1;
int pos = position();
if (pos > 0)
{
int count = remaining();
shiftDown(0, pos, count);
position(count);
limit(capacity());
}
else
{
position(limit());
limit(capacity());
}
return this;
}
public boolean isDirect ()
{
return false;
}
public byte get ()
{
checkForUnderflow();
byte result = backing_buffer [position () + array_offset];
position (position () + 1);
return result;
}
public ByteBuffer put (byte value)
{
checkIfReadOnly();
checkForOverflow();
int pos = position();
backing_buffer [pos + array_offset] = value;
position (pos + 1);
return this;
}
public byte get (int index)
{
checkIndex(index);
return backing_buffer [index + array_offset];
}
public ByteBuffer put (int index, byte value)
{
checkIfReadOnly();
checkIndex(index);
backing_buffer [index + array_offset] = value;
return this;
}
public char getChar ()
{
return ByteBufferHelper.getChar(this, order());
}
public ByteBuffer putChar (char value)
{
ByteBufferHelper.putChar(this, value, order());
return this;
}
public char getChar (int index)
{
return ByteBufferHelper.getChar(this, index, order());
}
public ByteBuffer putChar (int index, char value)
{
ByteBufferHelper.putChar(this, index, value, order());
return this;
}
public short getShort ()
{
return ByteBufferHelper.getShort(this, order());
}
public ByteBuffer putShort (short value)
{
ByteBufferHelper.putShort(this, value, order());
return this;
}
public short getShort (int index)
{
return ByteBufferHelper.getShort(this, index, order());
}
public ByteBuffer putShort (int index, short value)
{
ByteBufferHelper.putShort(this, index, value, order());
return this;
}
public int getInt ()
{
return ByteBufferHelper.getInt(this, order());
}
public ByteBuffer putInt (int value)
{
ByteBufferHelper.putInt(this, value, order());
return this;
}
public int getInt (int index)
{
return ByteBufferHelper.getInt(this, index, order());
}
public ByteBuffer putInt (int index, int value)
{
ByteBufferHelper.putInt(this, index, value, order());
return this;
}
public long getLong ()
{
return ByteBufferHelper.getLong(this, order());
}
public ByteBuffer putLong (long value)
{
ByteBufferHelper.putLong (this, value, order());
return this;
}
public long getLong (int index)
{
return ByteBufferHelper.getLong (this, index, order());
}
public ByteBuffer putLong (int index, long value)
{
ByteBufferHelper.putLong (this, index, value, order());
return this;
}
public float getFloat ()
{
return ByteBufferHelper.getFloat (this, order());
}
public ByteBuffer putFloat (float value)
{
ByteBufferHelper.putFloat (this, value, order());
return this;
}
public float getFloat (int index)
{
return ByteBufferHelper.getFloat (this, index, order());
}
public ByteBuffer putFloat (int index, float value)
{
ByteBufferHelper.putFloat (this, index, value, order());
return this;
}
public double getDouble ()
{
return ByteBufferHelper.getDouble (this, order());
}
public ByteBuffer putDouble (double value)
{
ByteBufferHelper.putDouble (this, value, order());
return this;
}
public double getDouble (int index)
{
return ByteBufferHelper.getDouble (this, index, order());
}
public ByteBuffer putDouble (int index, double value)
{
ByteBufferHelper.putDouble (this, index, value, order());
return this;
}
}