queryparser.java

Lucene a java open-source SearchEngine Framework

          if (goop1.kind == RANGEIN_QUOTED) {
            goop1.image = goop1.image.substring(1, goop1.image.length()-1);
          }
          if (goop2.kind == RANGEIN_QUOTED) {
            goop2.image = goop2.image.substring(1, goop2.image.length()-1);
          }
          q = getRangeQuery(field, discardEscapeChar(goop1.image), discardEscapeChar(goop2.image), true);
      break;
    case RANGEEX_START:
      jj_consume_token(RANGEEX_START);
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case RANGEEX_GOOP:
        goop1 = jj_consume_token(RANGEEX_GOOP);
        break;
      case RANGEEX_QUOTED:
        goop1 = jj_consume_token(RANGEEX_QUOTED);
        break;
      default:
        jj_la1[16] = jj_gen;
        jj_consume_token(-1);
        throw new ParseException();
      }
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case RANGEEX_TO:
        jj_consume_token(RANGEEX_TO);
        break;
      default:
        jj_la1[17] = jj_gen;
        ;
      }
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case RANGEEX_GOOP:
        goop2 = jj_consume_token(RANGEEX_GOOP);
        break;
      case RANGEEX_QUOTED:
        goop2 = jj_consume_token(RANGEEX_QUOTED);
        break;
      default:
        jj_la1[18] = jj_gen;
        jj_consume_token(-1);
        throw new ParseException();
      }
      jj_consume_token(RANGEEX_END);
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case CARAT:
        jj_consume_token(CARAT);
        boost = jj_consume_token(NUMBER);
        break;
      default:
        jj_la1[19] = jj_gen;
        ;
      }
          if (goop1.kind == RANGEEX_QUOTED) {
            goop1.image = goop1.image.substring(1, goop1.image.length()-1);
          }
          if (goop2.kind == RANGEEX_QUOTED) {
            goop2.image = goop2.image.substring(1, goop2.image.length()-1);
          }

          q = getRangeQuery(field, discardEscapeChar(goop1.image), discardEscapeChar(goop2.image), false);
      break;
    case QUOTED:
      term = jj_consume_token(QUOTED);
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case FUZZY_SLOP:
        fuzzySlop = jj_consume_token(FUZZY_SLOP);
        break;
      default:
        jj_la1[20] = jj_gen;
        ;
      }
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case CARAT:
        jj_consume_token(CARAT);
        boost = jj_consume_token(NUMBER);
        break;
      default:
        jj_la1[21] = jj_gen;
        ;
      }
         int s = phraseSlop;

         if (fuzzySlop != null) {
           try {
             s = Float.valueOf(fuzzySlop.image.substring(1)).intValue();
           }
           catch (Exception ignored) { }
         }
         q = getFieldQuery(field, discardEscapeChar(term.image.substring(1, term.image.length()-1)), s);
      break;
    default:
      jj_la1[22] = jj_gen;
      jj_consume_token(-1);
      throw new ParseException();
    }
    if (boost != null) {
      float f = (float) 1.0;
      try {
        f = Float.valueOf(boost.image).floatValue();
      }
      catch (Exception ignored) {
    /* Should this be handled somehow? (defaults to "no boost", if
     * boost number is invalid)
     */
      }

      // avoid boosting null queries, such as those caused by stop words
      if (q != null) {
        q.setBoost(f);
      }
    }
    {if (true) return q;}
    throw new Error("Missing return statement in function");
  }

  final private boolean jj_2_1(int xla) {
    jj_la = xla; jj_lastpos = jj_scanpos = token;
    try { return !jj_3_1(); }
    catch(LookaheadSuccess ls) { return true; }
    finally { jj_save(0, xla); }
  }

  final private boolean jj_3R_2() {
    if (jj_scan_token(TERM)) return true;
    if (jj_scan_token(COLON)) return true;
    return false;
  }

  final private boolean jj_3_1() {
    Token xsp;
    xsp = jj_scanpos;
    if (jj_3R_2()) {
    jj_scanpos = xsp;
    if (jj_3R_3()) return true;
    }
    return false;
  }

  final private boolean jj_3R_3() {
    if (jj_scan_token(STAR)) return true;
    if (jj_scan_token(COLON)) return true;
    return false;
  }

  public QueryParserTokenManager token_source;
  public Token token, jj_nt;
  private int jj_ntk;
  private Token jj_scanpos, jj_lastpos;
  private int jj_la;
  public boolean lookingAhead = false;
  private boolean jj_semLA;
  private int jj_gen;
  final private int[] jj_la1 = new int[23];
  static private int[] jj_la1_0;
  static private int[] jj_la1_1;
  static {
      jj_la1_0();
      jj_la1_1();
   }
   private static void jj_la1_0() {
      jj_la1_0 = new int[] {0x180,0x180,0xe00,0xe00,0x1f69f80,0x48000,0x10000,0x1f69000,0x1348000,0x80000,0x80000,0x10000,0x18000000,0x2000000,0x18000000,0x10000,0x80000000,0x20000000,0x80000000,0x10000,0x80000,0x10000,0x1f68000,};
   }
   private static void jj_la1_1() {
      jj_la1_1 = new int[] {0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,0x0,0x1,0x0,0x0,0x0,0x0,};
   }
  final private JJCalls[] jj_2_rtns = new JJCalls[1];
  private boolean jj_rescan = false;
  private int jj_gc = 0;

  public QueryParser(CharStream stream) {
    token_source = new QueryParserTokenManager(stream);
    token = new Token();
    jj_ntk = -1;
    jj_gen = 0;
    for (int i = 0; i < 23; i++) jj_la1[i] = -1;
    for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
  }

  public void ReInit(CharStream stream) {
    token_source.ReInit(stream);
    token = new Token();
    jj_ntk = -1;
    jj_gen = 0;
    for (int i = 0; i < 23; i++) jj_la1[i] = -1;
    for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
  }

  public QueryParser(QueryParserTokenManager tm) {
    token_source = tm;
    token = new Token();
    jj_ntk = -1;
    jj_gen = 0;
    for (int i = 0; i < 23; i++) jj_la1[i] = -1;
    for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
  }

  public void ReInit(QueryParserTokenManager tm) {
    token_source = tm;
    token = new Token();
    jj_ntk = -1;
    jj_gen = 0;
    for (int i = 0; i < 23; i++) jj_la1[i] = -1;
    for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
  }

  final private Token jj_consume_token(int kind) throws ParseException {
    Token oldToken;
    if ((oldToken = token).next != null) token = token.next;
    else token = token.next = token_source.getNextToken();
    jj_ntk = -1;
    if (token.kind == kind) {
      jj_gen++;
      if (++jj_gc > 100) {
        jj_gc = 0;
        for (int i = 0; i < jj_2_rtns.length; i++) {
          JJCalls c = jj_2_rtns[i];
          while (c != null) {
            if (c.gen < jj_gen) c.first = null;
            c = c.next;
          }
        }
      }
      return token;
    }
    token = oldToken;
    jj_kind = kind;
    throw generateParseException();
  }

  static private final class LookaheadSuccess extends java.lang.Error { }
  final private LookaheadSuccess jj_ls = new LookaheadSuccess();
  final private boolean jj_scan_token(int kind) {
    if (jj_scanpos == jj_lastpos) {
      jj_la--;
      if (jj_scanpos.next == null) {
        jj_lastpos = jj_scanpos = jj_scanpos.next = token_source.getNextToken();
      } else {
        jj_lastpos = jj_scanpos = jj_scanpos.next;
      }
    } else {
      jj_scanpos = jj_scanpos.next;
    }
    if (jj_rescan) {
      int i = 0; Token tok = token;
      while (tok != null && tok != jj_scanpos) { i++; tok = tok.next; }
      if (tok != null) jj_add_error_token(kind, i);
    }
    if (jj_scanpos.kind != kind) return true;
    if (jj_la == 0 && jj_scanpos == jj_lastpos) throw jj_ls;
    return false;
  }

  final public Token getNextToken() {
    if (token.next != null) token = token.next;
    else token = token.next = token_source.getNextToken();
    jj_ntk = -1;
    jj_gen++;
    return token;
  }

  final public Token getToken(int index) {
    Token t = lookingAhead ? jj_scanpos : token;
    for (int i = 0; i < index; i++) {
      if (t.next != null) t = t.next;
      else t = t.next = token_source.getNextToken();
    }
    return t;
  }

  final private int jj_ntk() {
    if ((jj_nt=token.next) == null)
      return (jj_ntk = (token.next=token_source.getNextToken()).kind);
    else
      return (jj_ntk = jj_nt.kind);
  }

  private java.util.Vector jj_expentries = new java.util.Vector();
  private int[] jj_expentry;
  private int jj_kind = -1;
  private int[] jj_lasttokens = new int[100];
  private int jj_endpos;

  private void jj_add_error_token(int kind, int pos) {
    if (pos >= 100) return;
    if (pos == jj_endpos + 1) {
      jj_lasttokens[jj_endpos++] = kind;
    } else if (jj_endpos != 0) {
      jj_expentry = new int[jj_endpos];
      for (int i = 0; i < jj_endpos; i++) {
        jj_expentry[i] = jj_lasttokens[i];
      }
      boolean exists = false;
      for (java.util.Enumeration e = jj_expentries.elements(); e.hasMoreElements();) {
        int[] oldentry = (int[])(e.nextElement());
        if (oldentry.length == jj_expentry.length) {
          exists = true;
          for (int i = 0; i < jj_expentry.length; i++) {
            if (oldentry[i] != jj_expentry[i]) {
              exists = false;
              break;
            }
          }
          if (exists) break;
        }
      }
      if (!exists) jj_expentries.addElement(jj_expentry);
      if (pos != 0) jj_lasttokens[(jj_endpos = pos) - 1] = kind;
    }
  }

  public ParseException generateParseException() {
    jj_expentries.removeAllElements();
    boolean[] la1tokens = new boolean[33];
    for (int i = 0; i < 33; i++) {
      la1tokens[i] = false;
    }
    if (jj_kind >= 0) {
      la1tokens[jj_kind] = true;
      jj_kind = -1;
    }
    for (int i = 0; i < 23; i++) {
      if (jj_la1[i] == jj_gen) {
        for (int j = 0; j < 32; j++) {
          if ((jj_la1_0[i] & (1<<j)) != 0) {
            la1tokens[j] = true;
          }
          if ((jj_la1_1[i] & (1<<j)) != 0) {
            la1tokens[32+j] = true;
          }
        }
      }
    }
    for (int i = 0; i < 33; i++) {
      if (la1tokens[i]) {
        jj_expentry = new int[1];
        jj_expentry[0] = i;
        jj_expentries.addElement(jj_expentry);
      }
    }
    jj_endpos = 0;
    jj_rescan_token();
    jj_add_error_token(0, 0);
    int[][] exptokseq = new int[jj_expentries.size()][];
    for (int i = 0; i < jj_expentries.size(); i++) {
      exptokseq[i] = (int[])jj_expentries.elementAt(i);
    }
    return new ParseException(token, exptokseq, tokenImage);
  }

  final public void enable_tracing() {
  }

  final public void disable_tracing() {
  }

  final private void jj_rescan_token() {
    jj_rescan = true;
    for (int i = 0; i < 1; i++) {
      JJCalls p = jj_2_rtns[i];
      do {
        if (p.gen > jj_gen) {
          jj_la = p.arg; jj_lastpos = jj_scanpos = p.first;
          switch (i) {
            case 0: jj_3_1(); break;
          }
        }
        p = p.next;
      } while (p != null);
    }
    jj_rescan = false;
  }

  final private void jj_save(int index, int xla) {
    JJCalls p = jj_2_rtns[index];
    while (p.gen > jj_gen) {
      if (p.next == null) { p = p.next = new JJCalls(); break; }
      p = p.next;
    }
    p.gen = jj_gen + xla - jj_la; p.first = token; p.arg = xla;
  }

  static final class JJCalls {
    int gen;
    Token first;
    int arg;
    JJCalls next;
  }

}