Decouple TypeMask from ClassElement

tests/compiler/dart2js/needs_no_such_method_test.dart

+// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+import 'package:async_helper/async_helper.dart';
+import 'package:expect/expect.dart';
+import 'package:compiler/src/common.dart';
+import 'package:compiler/src/elements/elements.dart'
+    show Element, ClassElement, PublicName;
+import 'package:compiler/src/universe/call_structure.dart';
+import 'package:compiler/src/universe/selector.dart';
+import 'package:compiler/src/world.dart' show ClosedWorld, ClassQuery;
+import 'type_test_helper.dart';
+
+void main() {
+  asyncTest(() async {
+    await testClassSets();
+  });
+}
+
+const String CLASSES = r"""
+class Superclass {
+  foo() {}
+}
+class Subclass extends Superclass {
+  bar() {}
+}
+class Subtype implements Superclass {
+  bar() {}
+}
+""";
+
+testClassSets() async {
+  Selector foo, bar, baz;
+  ClosedWorld closedWorld;
+  ClassElement superclass, subclass, subtype;
+
+  Future run(List<String> instantiated) async {
+    StringBuffer main = new StringBuffer();
+    main.write('main() {');
+    for (String cls in instantiated) {
+      main.write('new $cls();');
+    }
+    main.write('}');
+
+    var env = await TypeEnvironment.create(CLASSES,
+        mainSource: main.toString(), useMockCompiler: false);
+    foo = new Selector.call(const PublicName('foo'), CallStructure.NO_ARGS);
+    bar = new Selector.call(const PublicName('bar'), CallStructure.NO_ARGS);
+    baz = new Selector.call(const PublicName('baz'), CallStructure.NO_ARGS);
+
+    closedWorld = env.compiler.closedWorld;
+    superclass = env.getElement('Superclass');
+    subclass = env.getElement('Subclass');
+    subtype = env.getElement('Subtype');
+  }
+
+  void check(ClassElement cls, ClassQuery query, Selector selector,
+      bool expectedResult) {
+    bool result = closedWorld.needsNoSuchMethod(cls, selector, query);
+    Expect.equals(expectedResult, result,
+        'Unexpected result for $selector in $cls ($query)');
+  }
+
+  await run([]);
+
+  Expect.isFalse(closedWorld.isDirectlyInstantiated(superclass));
+  Expect.isFalse(closedWorld.isIndirectlyInstantiated(superclass));
+  Expect.isFalse(closedWorld.isImplemented(superclass));
+
+  Expect.isFalse(closedWorld.isDirectlyInstantiated(subclass));
+  Expect.isFalse(closedWorld.isIndirectlyInstantiated(subclass));
+  Expect.isFalse(closedWorld.isImplemented(subclass));
+
+  Expect.isFalse(closedWorld.isDirectlyInstantiated(subtype));
+  Expect.isFalse(closedWorld.isIndirectlyInstantiated(subtype));
+  Expect.isFalse(closedWorld.isImplemented(subtype));
+
+  check(superclass, ClassQuery.EXACT, foo, false);
+  check(superclass, ClassQuery.EXACT, bar, false);
+  check(superclass, ClassQuery.EXACT, baz, false);
+  check(superclass, ClassQuery.SUBCLASS, foo, false);
+  check(superclass, ClassQuery.SUBCLASS, bar, false);
+  check(superclass, ClassQuery.SUBCLASS, baz, false);
+  check(superclass, ClassQuery.SUBTYPE, foo, false);
+  check(superclass, ClassQuery.SUBTYPE, bar, false);
+  check(superclass, ClassQuery.SUBTYPE, baz, false);
+
+  check(subclass, ClassQuery.EXACT, foo, false);
+  check(subclass, ClassQuery.EXACT, bar, false);
+  check(subclass, ClassQuery.EXACT, baz, false);
+  check(subclass, ClassQuery.SUBCLASS, foo, false);
+  check(subclass, ClassQuery.SUBCLASS, bar, false);
+  check(subclass, ClassQuery.SUBCLASS, baz, false);
+  check(subclass, ClassQuery.SUBTYPE, foo, false);
+  check(subclass, ClassQuery.SUBTYPE, bar, false);
+  check(subclass, ClassQuery.SUBTYPE, baz, false);
+
+  check(subtype, ClassQuery.EXACT, foo, false);
+  check(subtype, ClassQuery.EXACT, bar, false);
+  check(subtype, ClassQuery.EXACT, baz, false);
+  check(subtype, ClassQuery.SUBCLASS, foo, false);
+  check(subtype, ClassQuery.SUBCLASS, bar, false);
+  check(subtype, ClassQuery.SUBCLASS, baz, false);
+  check(subtype, ClassQuery.SUBTYPE, foo, false);
+  check(subtype, ClassQuery.SUBTYPE, bar, false);
+  check(subtype, ClassQuery.SUBTYPE, baz, false);
+
+  await run(['Superclass']);
+
+  Expect.isTrue(closedWorld.isDirectlyInstantiated(superclass));
+  Expect.isFalse(closedWorld.isIndirectlyInstantiated(superclass));
+  Expect.isTrue(closedWorld.isImplemented(superclass));
+
+  Expect.isFalse(closedWorld.isDirectlyInstantiated(subclass));
+  Expect.isFalse(closedWorld.isIndirectlyInstantiated(subclass));
+  Expect.isFalse(closedWorld.isImplemented(subclass));
+
+  Expect.isFalse(closedWorld.isDirectlyInstantiated(subtype));
+  Expect.isFalse(closedWorld.isIndirectlyInstantiated(subtype));
+  Expect.isFalse(closedWorld.isImplemented(subtype));
+
+  check(superclass, ClassQuery.EXACT, foo, false);
+  check(superclass, ClassQuery.EXACT, bar, true);
+  check(superclass, ClassQuery.EXACT, baz, true);
+  check(superclass, ClassQuery.SUBCLASS, foo, false);
+  check(superclass, ClassQuery.SUBCLASS, bar, true);
+  check(superclass, ClassQuery.SUBCLASS, baz, true);
+  check(superclass, ClassQuery.SUBTYPE, foo, false);
+  check(superclass, ClassQuery.SUBTYPE, bar, true);
+  check(superclass, ClassQuery.SUBTYPE, baz, true);
+
+  check(subclass, ClassQuery.EXACT, foo, false);
+  check(subclass, ClassQuery.EXACT, bar, false);
+  check(subclass, ClassQuery.EXACT, baz, false);
+  check(subclass, ClassQuery.SUBCLASS, foo, false);
+  check(subclass, ClassQuery.SUBCLASS, bar, false);
+  check(subclass, ClassQuery.SUBCLASS, baz, false);
+  check(subclass, ClassQuery.SUBTYPE, foo, false);
+  check(subclass, ClassQuery.SUBTYPE, bar, false);
+  check(subclass, ClassQuery.SUBTYPE, baz, false);
+
+  check(subtype, ClassQuery.EXACT, foo, false);
+  check(subtype, ClassQuery.EXACT, bar, false);
+  check(subtype, ClassQuery.EXACT, baz, false);
+  check(subtype, ClassQuery.SUBCLASS, foo, false);
+  check(subtype, ClassQuery.SUBCLASS, bar, false);
+  check(subtype, ClassQuery.SUBCLASS, baz, false);
+  check(subtype, ClassQuery.SUBTYPE, foo, false);
+  check(subtype, ClassQuery.SUBTYPE, bar, false);
+  check(subtype, ClassQuery.SUBTYPE, baz, false);
+
+  await run(['Subclass']);
+
+  Expect.isFalse(closedWorld.isDirectlyInstantiated(superclass));
+  Expect.isTrue(closedWorld.isIndirectlyInstantiated(superclass));
+  Expect.isTrue(closedWorld.isImplemented(superclass));
+
+  Expect.isTrue(closedWorld.isDirectlyInstantiated(subclass));
+  Expect.isFalse(closedWorld.isIndirectlyInstantiated(subclass));
+  Expect.isTrue(closedWorld.isImplemented(subclass));
+
+  Expect.isFalse(closedWorld.isDirectlyInstantiated(subtype));
+  Expect.isFalse(closedWorld.isIndirectlyInstantiated(subtype));
+  Expect.isFalse(closedWorld.isImplemented(subtype));
+
+  check(superclass, ClassQuery.EXACT, foo, false);
+  // Should be false since the class is not directly instantiated:
+  check(superclass, ClassQuery.EXACT, bar, true);
+  // Should be false since the class is not directly instantiated:
+  check(superclass, ClassQuery.EXACT, baz, true);
+  check(superclass, ClassQuery.SUBCLASS, foo, false);
+  // Should be false since all live subclasses have a concrete implementation:
+  check(superclass, ClassQuery.SUBCLASS, bar, true);
+  check(superclass, ClassQuery.SUBCLASS, baz, true);
+  check(superclass, ClassQuery.SUBTYPE, foo, false);
+  // Should be false since all live subtypes have a concrete implementation:
+  check(superclass, ClassQuery.SUBTYPE, bar, true);
+  check(superclass, ClassQuery.SUBTYPE, baz, true);
+
+  check(subclass, ClassQuery.EXACT, foo, false);
+  check(subclass, ClassQuery.EXACT, bar, false);
+  check(subclass, ClassQuery.EXACT, baz, true);
+  check(subclass, ClassQuery.SUBCLASS, foo, false);
+  check(subclass, ClassQuery.SUBCLASS, bar, false);
+  check(subclass, ClassQuery.SUBCLASS, baz, true);
+  check(subclass, ClassQuery.SUBTYPE, foo, false);
+  check(subclass, ClassQuery.SUBTYPE, bar, false);
+  check(subclass, ClassQuery.SUBTYPE, baz, true);
+
+  check(subtype, ClassQuery.EXACT, foo, false);
+  check(subtype, ClassQuery.EXACT, bar, false);
+  check(subtype, ClassQuery.EXACT, baz, false);
+  check(subtype, ClassQuery.SUBCLASS, foo, false);
+  check(subtype, ClassQuery.SUBCLASS, bar, false);
+  check(subtype, ClassQuery.SUBCLASS, baz, false);
+  check(subtype, ClassQuery.SUBTYPE, foo, false);
+  check(subtype, ClassQuery.SUBTYPE, bar, false);
+  check(subtype, ClassQuery.SUBTYPE, baz, false);
+
+  await run(['Subtype']);
+
+  Expect.isFalse(closedWorld.isDirectlyInstantiated(superclass));
+  Expect.isFalse(closedWorld.isIndirectlyInstantiated(superclass));
+  Expect.isTrue(closedWorld.isImplemented(superclass));
+
+  Expect.isFalse(closedWorld.isDirectlyInstantiated(subclass));
+  Expect.isFalse(closedWorld.isIndirectlyInstantiated(subclass));
+  Expect.isFalse(closedWorld.isImplemented(subclass));
+
+  Expect.isTrue(closedWorld.isDirectlyInstantiated(subtype));
+  Expect.isFalse(closedWorld.isIndirectlyInstantiated(subtype));
+  Expect.isTrue(closedWorld.isImplemented(subtype));
+
+  check(superclass, ClassQuery.EXACT, foo, false);
+  check(superclass, ClassQuery.EXACT, bar, false);
+  check(superclass, ClassQuery.EXACT, baz, false);
+  check(superclass, ClassQuery.SUBCLASS, foo, false);
+  check(superclass, ClassQuery.SUBCLASS, bar, false);
+  check(superclass, ClassQuery.SUBCLASS, baz, false);
+  check(superclass, ClassQuery.SUBTYPE, foo, true);
+  check(superclass, ClassQuery.SUBTYPE, bar, false);
+  check(superclass, ClassQuery.SUBTYPE, baz, true);
+
+  check(subclass, ClassQuery.EXACT, foo, false);
+  check(subclass, ClassQuery.EXACT, bar, false);
+  check(subclass, ClassQuery.EXACT, baz, false);
+  check(subclass, ClassQuery.SUBCLASS, foo, false);
+  check(subclass, ClassQuery.SUBCLASS, bar, false);
+  check(subclass, ClassQuery.SUBCLASS, baz, false);
+  check(subclass, ClassQuery.SUBTYPE, foo, false);
+  check(subclass, ClassQuery.SUBTYPE, bar, false);
+  check(subclass, ClassQuery.SUBTYPE, baz, false);
+
+  check(subtype, ClassQuery.EXACT, foo, true);
+  check(subtype, ClassQuery.EXACT, bar, false);
+  check(subtype, ClassQuery.EXACT, baz, true);
+  check(subtype, ClassQuery.SUBCLASS, foo, true);
+  check(subtype, ClassQuery.SUBCLASS, bar, false);
+  check(subtype, ClassQuery.SUBCLASS, baz, true);
+  check(subtype, ClassQuery.SUBTYPE, foo, true);
+  check(subtype, ClassQuery.SUBTYPE, bar, false);
+  check(subtype, ClassQuery.SUBTYPE, baz, true);
+
+  await run(['Subclass', 'Subtype']);
+
+  Expect.isFalse(closedWorld.isDirectlyInstantiated(superclass));
+  Expect.isTrue(closedWorld.isIndirectlyInstantiated(superclass));
+  Expect.isTrue(closedWorld.isImplemented(superclass));
+
+  Expect.isTrue(closedWorld.isDirectlyInstantiated(subclass));
+  Expect.isFalse(closedWorld.isIndirectlyInstantiated(subclass));
+  Expect.isTrue(closedWorld.isImplemented(subclass));
+
+  Expect.isTrue(closedWorld.isDirectlyInstantiated(subtype));
+  Expect.isFalse(closedWorld.isIndirectlyInstantiated(subtype));
+  Expect.isTrue(closedWorld.isImplemented(subtype));
+
+  check(superclass, ClassQuery.EXACT, foo, false);
+  // Should be false since the class is not directly instantiated:
+  check(superclass, ClassQuery.EXACT, bar, true);
+  // Should be false since the class is not directly instantiated:
+  check(superclass, ClassQuery.EXACT, baz, true);
+  check(superclass, ClassQuery.SUBCLASS, foo, false);
+  // Should be false since all live subclasses have a concrete implementation:
+  check(superclass, ClassQuery.SUBCLASS, bar, true);
+  check(superclass, ClassQuery.SUBCLASS, baz, true);
+  check(superclass, ClassQuery.SUBTYPE, foo, true);
+  // Should be false since all live subtypes have a concrete implementation:
+  check(superclass, ClassQuery.SUBTYPE, bar, true);
+  check(superclass, ClassQuery.SUBTYPE, baz, true);
+
+  check(subclass, ClassQuery.EXACT, foo, false);
+  check(subclass, ClassQuery.EXACT, bar, false);
+  check(subclass, ClassQuery.EXACT, baz, true);
+  check(subclass, ClassQuery.SUBCLASS, foo, false);
+  check(subclass, ClassQuery.SUBCLASS, bar, false);
+  check(subclass, ClassQuery.SUBCLASS, baz, true);
+  check(subclass, ClassQuery.SUBTYPE, foo, false);
+  check(subclass, ClassQuery.SUBTYPE, bar, false);
+  check(subclass, ClassQuery.SUBTYPE, baz, true);
+
+  check(subtype, ClassQuery.EXACT, foo, true);
+  check(subtype, ClassQuery.EXACT, bar, false);
+  check(subtype, ClassQuery.EXACT, baz, true);
+  check(subtype, ClassQuery.SUBCLASS, foo, true);
+  check(subtype, ClassQuery.SUBCLASS, bar, false);
+  check(subtype, ClassQuery.SUBCLASS, baz, true);
+  check(subtype, ClassQuery.SUBTYPE, foo, true);
+  check(subtype, ClassQuery.SUBTYPE, bar, false);
+  check(subtype, ClassQuery.SUBTYPE, baz, true);
+}