| // Copyright (c) 2015, 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. |
| |
| // Test that elements are not needlessly required by dart2js. |
| |
| import 'package:async_helper/async_helper.dart'; |
| import 'package:compiler/src/compiler.dart'; |
| import 'package:compiler/src/elements/elements.dart'; |
| import 'package:compiler/src/enqueue.dart'; |
| import 'package:compiler/src/js_backend/backend_helpers.dart'; |
| import 'package:expect/expect.dart'; |
| import 'memory_compiler.dart'; |
| |
| main() { |
| asyncTest(() async { |
| await analyze('main() {}'); |
| await analyze('main() => proxy;', proxyConstantComputed: true); |
| await analyze('@deprecated main() {}'); |
| await analyze('@deprecated main() => deprecated;', deprecatedClass: true); |
| await analyze('main() => deprecated;', deprecatedClass: true); |
| }); |
| } |
| |
| void checkInstantiated(Compiler compiler, ClassElement cls, bool expected) { |
| ResolutionEnqueuer enqueuer = compiler.enqueuer.resolution; |
| bool isInstantiated = |
| enqueuer.worldBuilder.directlyInstantiatedClasses.contains(cls); |
| bool isProcessed = enqueuer.processedClasses.contains(cls); |
| Expect.equals(expected, isInstantiated, |
| 'Unexpected instantiation state of class $cls.'); |
| Expect.equals( |
| expected, isProcessed, 'Unexpected processing state of class $cls.'); |
| } |
| |
| analyze(String code, |
| {bool proxyConstantComputed: false, bool deprecatedClass: false}) async { |
| CompilationResult result = await runCompiler( |
| memorySourceFiles: {'main.dart': code}, options: ['--analyze-only']); |
| Expect.isTrue(result.isSuccess); |
| Compiler compiler = result.compiler; |
| Expect.equals( |
| proxyConstantComputed, |
| compiler.resolution.wasProxyConstantComputedTestingOnly, |
| "Unexpected computation of proxy constant."); |
| |
| LibraryElement coreLibrary = compiler.commonElements.coreLibrary; |
| checkInstantiated( |
| compiler, coreLibrary.find('_Proxy'), proxyConstantComputed); |
| checkInstantiated(compiler, coreLibrary.find('Deprecated'), deprecatedClass); |
| |
| LibraryElement jsHelperLibrary = |
| compiler.libraryLoader.lookupLibrary(BackendHelpers.DART_JS_HELPER); |
| jsHelperLibrary.forEachLocalMember((Element element) { |
| Uri uri = element.compilationUnit.script.resourceUri; |
| if (element.isClass && uri.path.endsWith('annotations.dart')) { |
| checkInstantiated(compiler, element, false); |
| } |
| }); |
| } |