symbol.scala

JAVA 语言的函数式编程扩展

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2003-2007, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */

// $Id: Symbol.scala 11974 2007-06-11 14:08:21Z mihaylov $


package scala


/** <p>
 *    Instances of <code>Symbol</code> can be created easily with
 *    Scala's built-in quote mechanism.
 *  </p>
 *  <p>
 *    For instance, the <a href="http://scala-lang.org/" target="_top">Scala</a>
 *    term <code>'mysym</code> will invoke the constructor of the
 *    <code>Symbol</code> class in the following way:
 *    <code>new Symbol("mysym")</code>.
 *  </p>
 *  
 *  @author  Martin Odersky
 *  @version 1.7, 08/12/2003
 */
final case class Symbol(name: String) {

  /** Converts this symbol to a string.
   */
  override def toString(): String = {
    "'" + name
  }

  /** <p>
   *    Makes this symbol into a unique reference.
   *  </p>
   *  <p>
   *    If two interened symbols are equal (i.e. they have the same name)
   *    then they must be identical (wrt reference equality).
   *  </p>
   *
   *  @return the unique reference to this symbol.
   */
  def intern: Symbol = this

}