/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * This file is part of SableCC.                             * * See the file "LICENSE" for copyright information and the  * * terms and conditions for copying, distribution and        * * modification of SableCC.                                  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */package org.sablecc.sablecc;import java.util.*;final class LR0Item implements Cloneable, Comparable{  final int production;  final int position;  LR0Item(int production, int position)  {    this.production = production;    this.position = position;  }  public int compareTo(Object object)  {    LR0Item item = (LR0Item) object;    int result = production - item.production;    if(result == 0)    {      result = position - item.position;    }    return result;  }  public Object clone()  {    return new LR0Item(production, position);  }  public boolean equals(Object obj)  {    if((obj == null) ||        (obj.getClass() != this.getClass()))    {      return false;    }    LR0Item item = (LR0Item) obj;    return (item.production == production) &&           (item.position == position);  }  public int hashCode()  {    return (production * 13) ^ (position * 17);  }  public String toString()  {    StringBuffer result = new StringBuffer();    String prodStr = (Production.production(production)).toString();    int pos = 0;    StringTokenizer list = new StringTokenizer(prodStr, "= ");    // we know that there is at least one token (lhs)    result.append(list.nextToken());    result.append(" =");    while(list.hasMoreElements())    {      String tmp = list.nextToken();      if(pos == position)      {        result.append(" * ");        result.append(tmp);      }      else      {        result.append(" ");        result.append(tmp);      }      pos++;    }    if(pos == position)    {      result.append(" *");    }    return "[ " + result + " ]";  }}