code: /*
   *  LanguageTool, a natural language style checker
   *  * Copyright (C) 2018 Fabian Richter
   *  *
   *  * 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.en;
  
  import org.languagetool.Tag;
  import org.languagetool.rules.AbstractUnitConversionRule;
  
  import java.math.RoundingMode;
  import java.text.NumberFormat;
  import java.util.Arrays;
  import java.util.Locale;
  import java.util.ResourceBundle;
  
  import static tech.units.indriya.unit.Units.*;
  
  /**
   * @since 4.3
   */
  public class UnitConversionRule extends AbstractUnitConversionRule {
  
    protected NumberFormat format;
  
    public UnitConversionRule(ResourceBundle messages) {
      super(messages);
      setTags(Arrays.asList(Tag.picky));
      format = NumberFormat.getNumberInstance(Locale.ENGLISH);
      format.setMaximumFractionDigits(2);
      format.setRoundingMode(RoundingMode.HALF_UP);
      addUnit("miles per hour", MILE.divide(HOUR), "miles per hour", 1, false);
  
      addUnit("kilograms?", KILOGRAM, "kilogram", 1e0, true);
      addUnit("grams?", KILOGRAM, "gram", 1e-3, true);
      addUnit("tons?", KILOGRAM, "ton", 1e3, true);
  
      addUnit("pounds?", POUND, "pounds", 1, false);
      addUnit("ounces?", OUNCE, "ounces", 1, false);
  
      addUnit("feet", FEET, "feet", 1, false);
      addUnit("miles?", MILE, "miles", 1, false);
      addUnit("yards?", YARD, "yards", 1, false);
      addUnit("inch(es)?", INCH, "inches", 1, false);
  
      addUnit("(?:degrees?)? Fahrenheit", FAHRENHEIT, "degree Fahrenheit", 1, false);
      addUnit("(?:degrees?)? Celsius", CELSIUS, "degree Celsius", 1, true);
    }
  
    @Override
    public String getId() {
      return "METRIC_UNITS_EN_GENERAL";
    }
  
    @Override
    public String getDescription() {
      return "Suggests or checks conversion of units to their metric equivalents.";
    }
  
    @Override
    protected NumberFormat getNumberFormat() {
      return format;
    }
  }
  