Creates `reflectors`, as a meta-meta feature that enables dynamic selection of a "mirror system".

test_reflectable/test/reflectors_test.dart

+// Copyright (c) 2015, the Dart Team. All rights reserved. Use of this
+// source code is governed by a BSD-style license that can be found in
+// the LICENSE file.
+
+library test_reflectable.test.reflectors_test;
+
+@GlobalQuantifyCapability(r".(A|B)$", const Reflector3())
+@GlobalQuantifyMetaCapability(P, const Reflector4())
+import "package:reflectable/reflectable.dart";
+import "package:unittest/unittest.dart";
+
+class Reflector extends Reflectable {
+  const Reflector()
+      : super(invokingCapability, declarationsCapability, libraryCapability);
+}
+
+class Reflector2 extends Reflectable {
+  const Reflector2()
+      : super(invokingCapability, metadataCapability, libraryCapability);
+}
+
+class Reflector3 extends Reflectable {
+  const Reflector3() : super(invokingCapability);
+}
+
+class Reflector4 extends Reflectable {
+  const Reflector4() : super(declarationsCapability);
+}
+
+class ReflectorUpwardsClosed extends Reflectable {
+  const ReflectorUpwardsClosed()
+      : super(superclassQuantifyCapability, invokingCapability,
+            declarationsCapability, typeRelationsCapability);
+}
+
+class ReflectorUpwardsClosedToA extends Reflectable {
+  const ReflectorUpwardsClosedToA()
+      : super(const SuperclassQuantifyCapability(A), invokingCapability,
+            declarationsCapability);
+}
+
+class ReflectorUpwardsClosedUntilA extends Reflectable {
+  const ReflectorUpwardsClosedUntilA()
+      : super(const SuperclassQuantifyCapability(A, excludeUpperBound: true),
+            invokingCapability, declarationsCapability);
+}
+
+@Reflector()
+@Reflector2()
+@P()
+class M1 {
+  foo() {}
+  var field;
+  static staticFoo(x) {}
+}
+
+class P {
+  const P();
+}
+
+@Reflector()
+@Reflector2()
+class M2 {}
+
+@Reflector()
+@Reflector2()
+class M3 {}
+
+@Reflector()
+class A {
+  foo() {}
+  var field;
+  static staticFoo(x) {}
+  static staticBar() {}
+}
+
+@Reflector()
+@Reflector2()
+class B extends A with M1 {}
+
+@Reflector()
+@Reflector2()
+@ReflectorUpwardsClosed()
+@ReflectorUpwardsClosedUntilA()
+class C extends B with M2, M3 {}
+
+@Reflector()
+@Reflector2()
+@ReflectorUpwardsClosed()
+@ReflectorUpwardsClosedToA()
+class D = A with M1;
+
+main() {
+  test("Mixin, superclasses not included", () {
+    expect(
+        Reflectable.reflectors,
+        [
+          const Reflector(),
+          const Reflector2(),
+          const Reflector3(),
+          const Reflector4(),
+          const ReflectorUpwardsClosed(),
+          const ReflectorUpwardsClosedToA(),
+          const ReflectorUpwardsClosedUntilA()
+        ].toSet());
+  });
+}