code: /* LanguageTool, a natural language style checker
   * Copyright (C) 2007 Daniel Naber (http://www.danielnaber.de)
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
   * USA
   */
  package org.languagetool.tagging.de;
  
  import java.io.IOException;
  import java.util.List;
  
  import org.languagetool.AnalyzedToken;
  import org.languagetool.AnalyzedTokenReadings;
  
  /**
   * @since 4.4
   */
  public class SwissGermanTagger extends GermanTagger {
  
    /* (non-Javadoc)
     * @see org.languagetool.tagging.de.GermanTagger#tag(java.util.List, boolean)
     */
    @Override
    public List<AnalyzedTokenReadings> tag(List<String> sentenceTokens, boolean ignoreCase) throws IOException { 
      List<AnalyzedTokenReadings> tokens = super.tag(sentenceTokens, ignoreCase);
      for (AnalyzedTokenReadings reading : tokens) {
        if (reading != null &&
          reading.getToken() != null &&
          reading.getToken().contains("ss") &&
          !reading.isTagged()) {
          AnalyzedTokenReadings replacementReading = lookup(reading.getToken().replace("ss", "ß"));
          if (replacementReading != null) {
            for (AnalyzedToken at : replacementReading.getReadings()) {
              reading.addReading(new AnalyzedToken(reading.getToken(), at.getPOSTag(), at.getLemma()), "SwissGermanTagger");
            }
          }
        }
      }
      return tokens;
    }
  }
  