build method
Implementation
@override
String build(Context context, ParserResult? result) {
final fast = result == null;
final values = context.allocateLocals(['pos']);
values.addAll({
'p1': before.build(context, null),
'p2': parser.build(context, result),
'p3': after.build(context, null),
});
return render2(fast, _templateFast, _template, values, [result]);
}