package js.tinyvm;

import java.io.*;

/**
 * Writes lo-byte first, hi-byte last.
 * In longs, hi-word goes first, but each
 * word is written as though with writeU4.
 */
public class LEDataOutputStream extends DataOutputStream
implements ByteWriter
{
  public LEDataOutputStream (OutputStream aOut)
  {
    super (aOut);
  }

  public void writeU1 (int aByte)
  throws IOException
  {
    write (aByte);
  }

  public void writeU2 (int aShort)
  throws IOException
  {
    write ((aShort >>> 0) & 0xFF);
    write ((aShort >>> 8) & 0xFF);    
  }

  public void writeU4 (int aInt)
  throws IOException
  {
    write ((aInt >>> 0) & 0xFF);
    write ((aInt >>> 8) & 0xFF);    
    write ((aInt >>> 16) & 0xFF);    
    write ((aInt >>> 24) & 0xFF);    
  }

  public void writeU8 (long aLong)
  throws IOException
  {
    write ((int) ((aLong >>> 32) & 0xFF));
    write ((int) ((aLong >>> 40) & 0xFF));    
    write ((int) ((aLong >>> 48) & 0xFF));    
    write ((int) ((aLong >>> 56) & 0xFF));    

    write ((int) ((aLong >>> 0) & 0xFF));
    write ((int) ((aLong >>> 8) & 0xFF));    
    write ((int) ((aLong >>> 16) & 0xFF));    
    write ((int) ((aLong >>> 24) & 0xFF));    
  }
}