SingularEncoder constructor Null safety

SingularEncoder()

Implementation

SingularEncoder() {
  irregularPluralNouns.forEach((singular, plural) {
    addIrregularInflectionRule(singular, plural);
  });

  [
    [r's$', (Match m) => ''],
    [r'(ss)$', (Match m) => m[1]],
    [r'(n)ews$', (Match m) => '${m[1]}ews'], // TODO: uncountable?
    [r'([ti])a$', (Match m) => '${m[1]}um'],
    [
      r'((a)naly|(b)a|(d)iagno|(p)arenthe|(p)rogno|(s)ynop|(t)he)(sis|ses)$',
      (Match m) => '${m[1]}sis'
    ],
    [r'(^analy)(sis|ses)$', (Match m) => '${m[1]}sis'], // TODO: not needed?
    [r'([^f])ves$', (Match m) => '${m[1]}fe'],
    [r'(hive|tive)s$', (Match m) => m[1]!],
    [r'([lr])ves$', (Match m) => '${m[1]}f'],
    [r'([^aeiouy]|qu)ies$', (Match m) => '${m[1]}y'],
    [r'(s)eries$', (Match m) => '${m[1]}eries'], // TODO: uncountable
    [r'(m)ovies$', (Match m) => '${m[1]}ovie'],
    [r'(x|ch|ss|sh)es$', (Match m) => m[1]!],
    [r'^(m|l)ice$', (Match m) => '${m[1]}ouse'],
    [r'(bus)(es)?$', (Match m) => m[1]!],
    [r'(shoe)s$', (Match m) => m[1]!],
    [r'(cris|test)(is|es)$', (Match m) => '${m[1]}is'],
    [r'^(a)x[ie]s$', (Match m) => '${m[1]}xis'],
    [r'(octop|vir)(us|i)$', (Match m) => '${m[1]}us'],
    [r'(alias|status)(es)?$', (Match m) => m[1]!],
    [r'^(ox)en', (Match m) => m[1]!],
    [r'(vert|ind)ices$', (Match m) => '${m[1]}ex'],
    [r'(matr)ices$', (Match m) => '${m[1]}ix'],
    [r'(quiz)zes$', (Match m) => m[1]!],
    [r'(database)s$', (Match m) => m[1]!]
  ]
      .reversed
      .forEach((rule) => addInflectionRule(rule.first as String, rule.last));
}