46 lines
1.2 KiB
Dart
46 lines
1.2 KiB
Dart
//library inflection2.singular_verb;
|
|
|
|
import 'dart:convert';
|
|
|
|
import 'irregular_plural_verbs.dart';
|
|
import 'util.dart';
|
|
|
|
class SingularVerbEncoder extends Converter<String, String> {
|
|
final List<List> _inflectionRules = [];
|
|
|
|
SingularVerbEncoder() {
|
|
irregularPluralVerbs.forEach((singular, plural) {
|
|
addInflectionRule(plural, (Match m) => singular);
|
|
});
|
|
|
|
[
|
|
[r'$', (Match m) => 's'],
|
|
[r'([^aeiou])y$', (Match m) => '${m[1]}ies'],
|
|
[r'(z)$', (Match m) => '${m[1]}es'],
|
|
[r'(ss|zz|x|h|o|us)$', (Match m) => '${m[1]}es'],
|
|
[r'(ed)$', (Match m) => '${m[1]}']
|
|
]
|
|
.reversed
|
|
.forEach((rule) => addInflectionRule(rule.first as String, rule.last));
|
|
}
|
|
|
|
void addInflectionRule(String singular, dynamic plural) {
|
|
_inflectionRules.add([RegExp(singular, caseSensitive: false), plural]);
|
|
}
|
|
|
|
@override
|
|
String convert(String word) {
|
|
if (word.isNotEmpty) {
|
|
for (var r in _inflectionRules) {
|
|
var pattern = r.first as RegExp;
|
|
if (pattern.hasMatch(word)) {
|
|
return word.replaceAllMapped(pattern, r.last as MatchToString);
|
|
}
|
|
}
|
|
}
|
|
|
|
return word;
|
|
}
|
|
}
|
|
|
|
final Converter<String, String> SINGULARVERB = SingularVerbEncoder();
|