Retrieving annotated metadata

retrieve_metadata.dart

import 'dart:mirrors';

class ToDo {
  final String who;
  final String what;

  const ToDo(this.who, this.what);

  String toString() => "ToDo[${this.who}: ${this.what}]";
}

@ToDo('seth', 'make this do something')
void doSomething() {
  print('do something');
}

void main() {
  InstanceMirror instanceMirror = reflect(doSomething);
  ClosureMirror colsureMirror = (instanceMirror as ClosureMirror);
  int count = 0;
  for (InstanceMirror metaObject in colsureMirror.function.metadata) {
    count++;
    print("meta ${count}: ${metaObject.reflectee}");
  }
  print("get ${count} meta objects.");
}