platform/packages/combinator/example/tuple.dart
2021-03-18 08:00:56 +08:00

14 lines
447 B
Dart

import 'package:combinator/combinator.dart';
import 'package:string_scanner/string_scanner.dart';
void main() {
var pub = match('pub').map((r) => r.span!.text).space();
var dart = match('dart').map((r) => 24).space();
var lang = match('lang').map((r) => true).space();
// Parses a Tuple3<String, int, bool>
var grammar = tuple3(pub, dart, lang);
var scanner = SpanScanner('pub dart lang');
print(grammar.parse(scanner)!.value);
}