code: /* LanguageTool, a natural language style checker
   * Copyright (C) 2021 Jaume Ortolà
   *
   * 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.rules;
  
  import org.languagetool.AnalyzedTokenReadings;
  import org.languagetool.Language;
  import org.languagetool.rules.patterns.RuleFilter;
  import org.languagetool.rules.spelling.SpellingCheckRule;
  import org.languagetool.tagging.Tagger;
  
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  
  public abstract class AbstractSuppressMisspelledSuggestionsFilter extends RuleFilter {
  
    protected final Language language;
    protected Tagger tagger;
  
    protected AbstractSuppressMisspelledSuggestionsFilter(Language language) {
      this.language = language;
      this.tagger = language.getTagger();
    }
  
    @Override
    public RuleMatch acceptRuleMatch(RuleMatch match, Map<String, String> arguments, int patternTokenPos,
        AnalyzedTokenReadings[] patternTokens) throws IOException {
      RuleMatch ruleMatch = match;
      List<String> replacements = match.getSuggestedReplacements();
      List<String> newReplacements = new ArrayList<>();
      String suppressMatch = getRequired("suppressMatch", arguments);
      String suppressPostag = getOptional("SuppressPostag", arguments);
      List<AnalyzedTokenReadings> atrs = new ArrayList<>();
      if (tagger != null && suppressPostag != null) {
        atrs = tagger.tag(replacements);
      }
      for (int i = 0; i < replacements.size(); i++) {
        if (!isMisspelled(replacements.get(i))) {
          if (tagger != null && suppressPostag != null) {
            if (!atrs.get(i).matchesPosTagRegex(suppressPostag)) {
              newReplacements.add(replacements.get(i));
            }
          } else {
            newReplacements.add(replacements.get(i));
          }
        }
      }
      boolean bSuppressMatch = true;
      if (suppressMatch != null && suppressMatch.equalsIgnoreCase("false")) {
        bSuppressMatch = false;
      }
      if (newReplacements.isEmpty() && bSuppressMatch) {
        return null;
      } else {
        ruleMatch.setSuggestedReplacements(newReplacements);
        return ruleMatch;
      }
    }
  
    public boolean isMisspelled(String s) throws IOException {
      SpellingCheckRule spellerRule = language.getDefaultSpellingRule();
      if (spellerRule == null)
        return false;
  
      try {
        List<String> tokens = language.getWordTokenizer().tokenize(s);
        boolean isMisspelled = false;
        for (String token : tokens) {
          isMisspelled = isMisspelled || (spellerRule != null && spellerRule.isMisspelled(token));
        }
        return isMisspelled;
      } catch (IOException e) {
        throw new RuntimeException(e);
      }
    }
  
  }