import java.io.PrintWriter;
import Instruction;

/**
 * The standard "Move" instruction for AAAL, the amazingly abstract
 * assembly language.
 *
 * @author Samuel A. Rebelsky
 * @version 1.0 of April 2001
 */
public class Move
  implements Instruction
{
  // +--------+------------------------------------------------------------
  // | Fields |
  // +--------+

  /** The source of the move command.  Where data comes from. */
  protected Location source;

  /** The destination of the move command.  Where data goes to. */
  protected Location destination;

  // +--------------+------------------------------------------------------
  // | Constructors |
  // +--------------+

  /**
   * Build a new instruction with specified source and destination.
   */
  public Move(Location source, Location destination) {
    this.source = source;
    this.destination = destination;
  } // Move(Location, Location);

  // +---------------------+-----------------------------------------------
  // | Instruction Methods |
  // +---------------------+

  /**
   * Print the instruction.
   */
  public void print(PrintWriter out) {
    out.print("  MOV ");
    this.source.print(out);
    out.print(" to ");
    this.destination.print(out);
    out.println();
  } // print(PrintWriter)

} // class Move