import Location;
import java.io.PrintWriter;

/**
 * A temporary location used only during initial translation.  Eventually,
 * temporaries need to be on the stack or in registers.
 * Part of the amazingly abstract assembly language.
 *
 * @author Samuel A. Rebelsky
 * @version 1.0 of April 2001
 */
public class Temp
  implements Location
{
  // +--------+------------------------------------------------------------
  // | Fields |
  // +--------+

  /** 
   * The number assigned to the temporary.  Permits us to determine
   * whether two temporaries are the same or different.
   */
  protected int number;

  /**
   * The counter used for temporaries so that each one has a
   * different number.
   */
  protected static int count;

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

  /**
   * Build a new constant with specified value.
   */
  public Temp() {
    this.number = count++;
  } // Temp()

  // +------------------+--------------------------------------------------
  // | Location Methods |
  // +------------------+

  /**
   * Print the temporary.
   */
  public void print(PrintWriter out) {
    out.print("T" + this.number);
  } // print(PrintWriter)

} // class Temp