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 org.languagetool.AnalyzedSentence;
  import org.languagetool.AnalyzedToken;
  import org.languagetool.AnalyzedTokenReadings;
  import org.languagetool.JLanguageTool;
  import org.languagetool.language.French;
  import org.languagetool.rules.RuleMatch;
  import org.languagetool.rules.patterns.RuleFilter;
  import org.languagetool.synthesis.FrenchSynthesizer;
  import org.languagetool.tagging.fr.FrenchTagger;
  
  import java.io.IOException;
  import java.util.*;
  
  /*
   * Get appropriate suggestions for French verbs in interrogative form (prérères-tu)
   * and imperative (dépêche-toi)
   */
  
  public class InterrogativeVerbFilter extends RuleFilter {
  
    // private static final Pattern PronounSubject = Pattern.compile("R pers suj
    // ([123] [sp])");
  
    private MorfologikFrenchSpellerRule morfologikRule;
  
    public InterrogativeVerbFilter() throws IOException {
      ResourceBundle messages = JLanguageTool.getDataBroker().getResourceBundle(JLanguageTool.MESSAGE_BUNDLE,
          new Locale("fr"));
      morfologikRule = new MorfologikFrenchSpellerRule(messages, new French(), null, Collections.emptyList());
    }
  
    @Override
    public RuleMatch acceptRuleMatch(RuleMatch match, Map<String, String> arguments, int patternTokenPos,
        AnalyzedTokenReadings[] patternTokens) throws IOException {
      
      if (match.getSentence().getText().contains("repondit-on")) {
        int ii=0;
        ii++;
      }
  
      List<String> replacements = new ArrayList<>();
      String pronounFrom = getRequired("PronounFrom", arguments);
      String verbFrom = getRequired("VerbFrom", arguments);
      String desiredPostag = null;
      String[] extraSuggestions = new String[0];
      if (pronounFrom != null && verbFrom != null) {
        int posPronoun = Integer.parseInt(pronounFrom);
        if (posPronoun < 1 || posPronoun > patternTokens.length) {
          throw new IllegalArgumentException("ConfusionCheckFilter: Index out of bounds in " + match.getRule().getFullId()
              + ", PronounFrom: " + posPronoun);
        }
        int posVerb = Integer.parseInt(verbFrom);
        if (posVerb < 1 || posVerb > patternTokens.length) {
          throw new IllegalArgumentException(
              "ConfusionCheckFilter: Index out of bounds in " + match.getRule().getFullId() + ", VerbFrom: " + posVerb);
        }
  
        //AnalyzedTokenReadings atrVerb = patternTokens[posVerb - 1];
        AnalyzedTokenReadings atrPronoun = patternTokens[posPronoun - 1];
        
        // vous
        if (atrPronoun.matchesPosTagRegex("R pers obj 2 p")) {
          desiredPostag = "V.* (imp) [23] [sp]|V .*(ind|cond).* 2 p";
        }
        // nous
        else if (atrPronoun.matchesPosTagRegex("R pers obj 1 p")) {
          desiredPostag = "V.* (imp) .*|V .*(ind|cond).* 1 p";
        }
        // moi, toi, le, la, lui, nous, vous, les, leur
        else if (atrPronoun.matchesPosTagRegex("R pers obj.*")) {
          desiredPostag = "V.* (imp) .*";
        }
        else if (atrPronoun.matchesPosTagRegex(".* 1 s")) {
          desiredPostag = "V .*(ind|cond).* 1 s";
          AnalyzedTokenReadings atrVerb = patternTokens[posVerb - 1];
          AnalyzedToken reading = atrVerb.readingWithTagRegex("V ind pres 1 s");
          if (reading!=null) {
            desiredPostag="V ind pres 1 s";
            if (atrVerb.getToken().endsWith("e")) {
              extraSuggestions = FrenchSynthesizer.INSTANCE.synthesize(reading, "V ppa [me] sp?|V ind pres 1 s", true);
            }
          }
        }
        else if (atrPronoun.matchesPosTagRegex(".* 2 s")) {
          desiredPostag = "V .*(ind|cond).* 2 s";
        }
        else if (atrPronoun.matchesPosTagRegex(".* 3( [mfe])? s")) {
          desiredPostag = "V .*(ind|cond).* 3 s";
        }
        else if (atrPronoun.matchesPosTagRegex(".* 1 p")) {
          desiredPostag = "V .*(ind|cond).* 1 p";
        }
        else if (atrPronoun.matchesPosTagRegex(".* 2 p")) {
          desiredPostag = "V .*(ind|cond).* 2 p";
        }
        else if (atrPronoun.matchesPosTagRegex(".* 3( [mf])? p")) {
          desiredPostag = "V .*(ind|cond).* 3 p";
        }
        
        // add: trompè-je and trompé-je for original sentence "trompe-je"
        if (extraSuggestions.length > 0) {
          for (String extraSuggestion : extraSuggestions) {
            String completeSuggestion = extraSuggestion + atrPronoun.getToken();
            if (!replacements.contains(completeSuggestion) 
                && !completeSuggestion.endsWith("e-je")) { // exclude trompe-je
              replacements.add(completeSuggestion);
            } 
          }
        }
        else if (desiredPostag != null) {
          AnalyzedTokenReadings[] auxPatternTokens = new AnalyzedTokenReadings[1];
          if (patternTokens[posVerb - 1].isTagged()) {
            auxPatternTokens[0] = new AnalyzedTokenReadings(
                new AnalyzedToken(makeWrong(patternTokens[posVerb - 1].getToken()), null, null));
          } else {
            auxPatternTokens[0] = patternTokens[posVerb - 1];
          }
          AnalyzedSentence sentence = new AnalyzedSentence(auxPatternTokens);
          RuleMatch[] matches = morfologikRule.match(sentence);
          if (matches.length > 0) {
            List<String> suggestions = matches[0].getSuggestedReplacements();
            List<AnalyzedTokenReadings> analyzedSuggestions = FrenchTagger.INSTANCE.tag(suggestions);
            for (AnalyzedTokenReadings analyzedSuggestion : analyzedSuggestions) {
              if (analyzedSuggestion.matchesPosTagRegex(desiredPostag)) {
                String completeSuggestion = analyzedSuggestion.getToken() + atrPronoun.getToken();
                if (!replacements.contains(completeSuggestion) 
                    && !completeSuggestion.endsWith("e-je")) { // exclude trompe-je
                  replacements.add(completeSuggestion);
                }
              }
            }
          }
        }
      }
     
      String message = match.getMessage();
      RuleMatch ruleMatch = new RuleMatch(match.getRule(), match.getSentence(), match.getFromPos(), match.getToPos(),
          message, match.getShortMessage());
      ruleMatch.setType(match.getType());
      if (!replacements.isEmpty()) {
        ruleMatch.setSuggestedReplacements(replacements);
      }
      return ruleMatch;
    }
  
    /*
     * Invent a wrong word to find possible replacements. This is a hack to obtain
     * suggestions from the speller when the original word is a correct word.
     */
    private String makeWrong(String s) {
      /* this doesn't work for some cases: ex. tarta / trata */
      if (s.contains("a")) {return s.replace("a", "ä");}
      if (s.contains("e")) {return s.replace("e", "ë");}
      if (s.contains("i")) {return s.replace("i", "í");}
      if (s.contains("o")) {return s.replace("o", "ö");}
      if (s.contains("u")) {return s.replace("u", "ü");}
      if (s.contains("é")) {return s.replace("é", "ë");}
      if (s.contains("à")) {return s.replace("à", "ä");}
      if (s.contains("è")) {return s.replace("è", "ë");}
      if (s.contains("ù")) {return s.replace("ù", "ü");}
      if (s.contains("â")) {return s.replace("â", "ä");}
      if (s.contains("ê")) {return s.replace("ê", "ë");}
      if (s.contains("î")) {return s.replace("î", "ï");}
      if (s.contains("ô")) {return s.replace("ô", "ö");}
      if (s.contains("û")) {return s.replace("û", "ü");}
      return s + "-";
    }
  }
  