+ support for child objects (sorry if it's bad; written in Notepad and don't really know Dart!)

simple_serialization_tests.dart

import 'dart:convert';
import 'package:smoke/smoke.dart' as smoke;
 
@MirrorsUsed(targets: const [SimpleWithMirrors, Simple], override: '*')
import 'dart:mirrors';

abstract class Serializable {
  static fromJson(Type t, Map json) {
    var typeMirror = reflectType(t);
    T obj = typeMirror.newInstance(new Symbol(""), const[]).reflectee;
    json.forEach((k, v) {
      if (v is Map) {
        var d = smoke.getDeclaration(t, smoke.nameToSymbol(k));
        smoke.write(obj, smoke.nameToSymbol(k), Serializable.fromJson(d.type, v));
      } else {
        smoke.write(obj, smoke.nameToSymbol(k), v);
      }
    });
    return obj;
  }
 
  Map toJson() {
    var options = new smoke.QueryOptions(includeProperties: false);
    var res = smoke.query(runtimeType, options);
    var map = {};
    res.forEach((r) => map[smoke.symbolToName(r.name)] = smoke.read(this, r.name));
    return map;
  }
}
 
class SimpleWithMirrors extends Object with Serializable {
  int id;
  String name;
  Child child;
}

class Child extends Object with Serializable {
  int id;
}
 
main() {
  var s4 = Serializable.fromJson(SimpleWithMirrors, JSON.decode('{"id":1,"name":"simple","child":{"id":2}}'));
  print(JSON.encode(s4));
 
}

This should be rewritten

T obj = typeMirror.newInstance(new Symbol(""), const[]).reflectee;

to

var obj = typeMirror.newInstance(new Symbol(""), const[]).reflectee;