parse method

List<String> parse(String sentence)

Implementation

List<String> parse(String sentence) {
  if (sentence.isEmpty) {
    return [];
  }

  final result = <String>[sentence[0]];

  for (var i = 1; i < sentence.length; i++) {
    var score = -_totalScore;
    if (i - 2 > 0) {
      score += 2 * _getScore('UW1', sentence.substring(i - 3, i - 2));
    }
    if (i - 1 > 0) {
      score += 2 * _getScore('UW2', sentence.substring(i - 2, i - 1));
    }
    score += 2 * _getScore('UW3', sentence.substring(i - 1, i));
    score += 2 * _getScore('UW4', sentence.substring(i, i + 1));
    if (i + 1 < sentence.length) {
      score += 2 * _getScore('UW5', sentence.substring(i + 1, i + 2));
    }
    if (i + 2 < sentence.length) {
      score += 2 * _getScore('UW6', sentence.substring(i + 2, i + 3));
    }
    if (i > 1) {
      score += 2 * _getScore('BW1', sentence.substring(i - 2, i));
    }
    score += 2 * _getScore('BW2', sentence.substring(i - 1, i + 1));
    if (i + 1 < sentence.length) {
      score += 2 * _getScore('BW3', sentence.substring(i, i + 2));
    }
    if (i - 2 > 0) {
      score += 2 * _getScore('TW1', sentence.substring(i - 3, i));
    }
    if (i - 1 > 0) {
      score += 2 * _getScore('TW2', sentence.substring(i - 2, i + 1));
    }
    if (i + 1 < sentence.length) {
      score += 2 * _getScore('TW3', sentence.substring(i - 1, i + 2));
    }
    if (i + 2 < sentence.length) {
      score += 2 * _getScore('TW4', sentence.substring(i, i + 3));
    }
    if (score > 0) {
      result.add('');
    }
    result[result.length - 1] += sentence[i];
  }
  return result;
}