scan.java

来自「JAVA在编译原理上的应用。」· Java 代码 · 共 44 行

package lolo.scans;

/** A package base class for all <tt>lolo.Scan</tt> subclasses.
 *
 * @see lolo.Scan
 * @author <a href="http://www.inf.uos.de/bernd" target="_blank">Bernd K&uuml;hl</a>
           (<a href="mailto:[e-mail]">[e-mail]</a>)
 */
abstract class Scan extends lolo.Scan {
    /** A <tt>State</tt> object which can be used in subclasses as result for <tt>nextChar()</tt>.
     *
     * @see lolo.Scan.State
     * @see lolo.Scan#nextChar(char)
     */
    protected final State stateObject = new State();
    /** May be used in subclasses to mark already reseted objects. */
    protected transient boolean reset;

    /** Indicates whether some other object is &quot;equal to&quot; this one.
     *
     * @return <tt>true</tt> if <tt>this</tt> and <tt>obj</tt> are from the same class,
     * <tt>false</tt> otherwise.*/
    public boolean equals(Object obj) {
        if (obj == null || obj.getClass() != this.getClass()) return false;
        return true;
    }
    
    /** Returns the hash code of the <tt>Class</tt> object as hash code value for the object.
     *
     * @return <tt>this.getClass().hashCode()</tt>
     */
	public int hashCode() {
        return this.getClass().hashCode();
    }

    /** Returns a string representation of the object.
     *
     * @return a string representation of the object.
     */
    public String toString() {
        return getClass().getName();
    }
}