| library petitparser.core.characters.word; |
| |
| import 'package:petitparser/src/core/characters/parser.dart'; |
| import 'package:petitparser/src/core/characters/predicate.dart'; |
| import 'package:petitparser/src/core/parser.dart'; |
| |
| /// Returns a parser that accepts any word character. |
| Parser word([String message = 'letter or digit expected']) { |
| return new CharacterParser(const _WordCharPredicate(), message); |
| } |
| |
| class _WordCharPredicate implements CharacterPredicate { |
| const _WordCharPredicate(); |
| |
| @override |
| bool test(int value) => |
| (65 <= value && value <= 90) || |
| (97 <= value && value <= 122) || |
| (48 <= value && value <= 57) || |
| (value == 95); |
| } |