ReservedNames class
class ReservedNames { Map<String, Parser<String>> _map; ReservedNames._(this._map); Parser<String> operator[](String key) { final res = _map[key]; if (res == null) throw "$key is not a reserved name"; else return res; } }
class ReservedNames { Map<String, Parser<String>> _map; ReservedNames._(this._map); Parser<String> operator[](String key) { final res = _map[key]; if (res == null) throw "$key is not a reserved name"; else return res; } }