code: /* LanguageTool, a natural language style checker 
   * Copyright (C) 2023 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.ca;
  
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  
  import org.languagetool.AnalyzedTokenReadings;
  import org.languagetool.AnalyzedToken;
  import org.languagetool.rules.RuleMatch;
  import org.languagetool.rules.patterns.RuleFilter;
  import org.languagetool.rules.patterns.PatternRule;
  import org.languagetool.synthesis.ca.CatalanSynthesizer;
  import org.languagetool.tools.StringTools;
  
  /*
   * Suggestions for rule DONAR_TEMPS: no em dóna temps -> no hi ha temps, no tinc temps
   */
  
  public class DonarTempsSuggestionsFilter extends RuleFilter {
  
    static private CatalanSynthesizer synth = CatalanSynthesizer.INSTANCE;
  
    @Override
    public RuleMatch acceptRuleMatch(RuleMatch match, Map<String, String> arguments, int patternTokenPos,
        AnalyzedTokenReadings[] patternTokens) throws IOException {
      int posWord = 0;
      AnalyzedTokenReadings[] tokens = match.getSentence().getTokensWithoutWhitespace();
      while (posWord < tokens.length
          && (tokens[posWord].getStartPos() < match.getFromPos() || tokens[posWord].isSentenceStart())) {
        posWord++;
      }
      String pronomPostag = tokens[posWord].readingWithTagRegex("P.*").getPOSTag();
      String pronomGenderNumber = pronomPostag.substring(2, 3) + pronomPostag.substring(4, 5);
      int indexFirstVerb = posWord + 1;
      int indexMainVerb = indexFirstVerb;
      while (!tokens[indexMainVerb].hasAnyLemma("donar")) {
        indexMainVerb++;
      }
      String verbPostag = tokens[indexMainVerb].readingWithTagRegex("V.*").getPOSTag();
  
      // haver-hi temps
      AnalyzedToken at = new AnalyzedToken("", "", "haver");
      String[] synthForms = synth.synthesize(at, "VA" + verbPostag.substring(2, 8),
          getLanguageVariantCode(match));
      StringBuilder suggestion1 = new StringBuilder();
      if (synthForms.length > 0) {
        int index = indexFirstVerb;
        suggestion1.append("hi");
        while (index < indexMainVerb) {
          if (tokens[index].isWhitespaceBefore() || suggestion1.length()==2) {
            suggestion1.append(" ");
          }
          suggestion1.append(tokens[index].getToken());
          index++;
        }
        suggestion1.append(" "+ synthForms[0] + " temps");
      }
      List<String> replacements = new ArrayList<>();
      String sugg1 = suggestion1.toString().replace("de haver", "d'haver");
      sugg1 = StringTools.preserveCase(sugg1, tokens[posWord].getToken());
      if (!sugg1.isEmpty()) {
        replacements.add(sugg1);
      }
  
      // tenir temps
      StringBuilder suggestion2 = new StringBuilder();
      int index = indexFirstVerb;
      if (index == indexMainVerb) {
        String[] synthForms2 = synth.synthesize(new AnalyzedToken("", "", "tenir"),
          verbPostag.substring(0, 4) + pronomGenderNumber + verbPostag.substring(6, 8), getLanguageVariantCode(match));
        if (synthForms2.length > 0) {
          suggestion2.append(synthForms2[0] + " temps");
        }
      } else {
        AnalyzedToken at2 = tokens[indexFirstVerb].getAnalyzedToken(0);
        String[] synthForms2 = synth.synthesize( at2,
          at2.getPOSTag().substring(0, 4) + pronomGenderNumber + at2.getPOSTag().substring(6, 8), getLanguageVariantCode(match));
        if (synthForms2.length > 0) {
          suggestion2.append(synthForms2[0]);
          index++;
          while (index < indexMainVerb) {
            if (tokens[index].isWhitespaceBefore()) {
              suggestion2.append(" ");
            }
            suggestion2.append(tokens[index].getToken());
            index++;
          }
          String[] synthForms3 = synth.synthesize( new AnalyzedToken("", "", "tenir"),
            tokens[indexMainVerb].getAnalyzedToken(0).getPOSTag(), getLanguageVariantCode(match));
          if (synthForms3.length > 0) {
            suggestion2.append(" " + synthForms3[0] + " temps");
          } else {
            suggestion2 = new StringBuilder();
          }
        }
      }
      String sugg2 = suggestion2.toString();
      sugg2 = StringTools.preserveCase(sugg2, tokens[posWord].getToken());
      if (!sugg2.isEmpty()) {
        replacements.add(sugg2);
      }
      if (replacements.isEmpty()) {
        return null;
      }
      RuleMatch ruleMatch = new RuleMatch(match.getRule(), match.getSentence(), tokens[posWord].getStartPos(),
          tokens[indexMainVerb + 1].getEndPos(), match.getMessage(), match.getShortMessage());
      ruleMatch.setType(match.getType());
      ruleMatch.setSuggestedReplacements(replacements);
      return ruleMatch;
    }
  
    private String getLanguageVariantCode(RuleMatch match) {
      PatternRule pr = (PatternRule) match.getRule();
      return pr.getLanguage().getShortCodeWithCountryAndVariant();
    }
  }