content: /*
   * Copyright (c) 2017, Andreas Fagschlunger. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   *   - Redistributions of source code must retain the above copyright
   *     notice, this list of conditions and the following disclaimer.
   *
   *   - Redistributions in binary form must reproduce the above copyright
   *     notice, this list of conditions and the following disclaimer in the
   *     documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
   * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
   * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
   * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  package at.o2xfs.win32;
  
  import java.util.Arrays;
  
  import org.apache.commons.lang3.builder.HashCodeBuilder;
  
  /**
   * This class is the base class for all native types.
   *
   * @author Andreas Fagschlunger
   */
  public abstract class Type {
  
  	private Buffer buffer;
  
  	protected final void assignBuffer(Pointer p) {
  		assignBuffer(p.buffer(getSize()));
  	}
  
  	protected void assignBuffer(Buffer aBuffer) {
  		buffer = aBuffer;
  	}
  
  	protected final byte[] getBytes() {
  		if (buffer == null) {
  			throw new IllegalStateException("No buffer");
  		}
  		return buffer.get();
  	}
  
  	protected final void put(byte[] src) {
  		if (buffer == null) {
  			throw new IllegalStateException("No buffer");
  		}
  		buffer.put(src);
  	}
  
  	public final void allocate() {
  		if (buffer != null) {
  			throw new IllegalStateException("Buffer already exists");
  		}
  		assignBuffer(BufferFactory.getInstance().createBuffer(getSize()));
  	}
  
  	public abstract int getSize();
  
  	protected final Buffer getBuffer() {
  		return buffer;
  	}
  
  	@Override
  	public int hashCode() {
  		return new HashCodeBuilder().append(getBytes()).toHashCode();
  	}
  
  	@Override
  	public boolean equals(Object obj) {
  		if (obj instanceof Type) {
  			return Arrays.equals(getBytes(), ((Type) obj).getBytes());
  		}
  		return false;
  	}
  }