code: /* LanguageTool, a natural language style checker 
   * Copyright (C) 2020 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.fr;
  
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  import java.util.regex.Pattern;
  
  import org.languagetool.AnalyzedTokenReadings;
  import org.languagetool.rules.RuleMatch;
  import org.languagetool.rules.patterns.RuleFilter;
  
  /*
   * Remove suggestions that match a regular expression
   */
  
  public class SuggestionsFilter extends RuleFilter {
  
    @Override
    public RuleMatch acceptRuleMatch(RuleMatch match, Map<String, String> arguments, int patternTokenPos,
        AnalyzedTokenReadings[] patternTokens) throws IOException {
  
      String removeSuggestionsRegexp = getRequired("RemoveSuggestionsRegexp", arguments);
      RuleMatch ruleMatch = match;
      List<String> replacements = match.getSuggestedReplacements();
      List<String> newReplacements = new ArrayList<>();
      Pattern p = Pattern.compile(removeSuggestionsRegexp, Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE);
      for (String r : replacements) {
        if (!p.matcher(r).matches()) {
          newReplacements.add(r);
        }
      }
      ruleMatch.setSuggestedReplacements(newReplacements);
      return ruleMatch;
    }
  
  }
  