| // Copyright (c) 2013, 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 'package:expect/expect.dart'; |
| import "package:async_helper/async_helper.dart"; |
| import 'compiler_helper.dart'; |
| import 'type_mask_test_helper.dart'; |
| |
| const String TEST = """ |
| returnInt1() { |
| var a = 42; |
| var f = () { |
| return a; |
| }; |
| return a; |
| } |
| |
| returnDyn1() { |
| var a = 42; |
| var f = () { |
| a = {}; |
| }; |
| return a; |
| } |
| |
| returnInt2() { |
| var a = 42; |
| var f = () { |
| a = 54; |
| }; |
| return a; |
| } |
| |
| returnDyn2() { |
| var a = 42; |
| var f = () { |
| a = 54; |
| }; |
| var g = () { |
| a = {}; |
| }; |
| return a; |
| } |
| |
| returnInt3() { |
| var a = 42; |
| if (a == 53) { |
| var f = () { |
| return a; |
| }; |
| } |
| return a; |
| } |
| |
| returnDyn3() { |
| var a = 42; |
| if (a == 53) { |
| var f = () { |
| a = {}; |
| }; |
| } |
| return a; |
| } |
| |
| returnInt4() { |
| var a = 42; |
| g() { return a; } |
| return g(); |
| } |
| |
| returnNum1() { |
| var a = 42.5; |
| try { |
| g() { |
| var b = {}; |
| b = 42; |
| return b; |
| } |
| a = g(); |
| } finally { |
| } |
| return a; |
| } |
| |
| returnIntOrNull() { |
| for (var b in [42]) { |
| var bar = 42; |
| f() => bar; |
| bar = null; |
| return f(); |
| } |
| return 42; |
| } |
| |
| class A { |
| foo() { |
| f() => this; |
| return f(); |
| } |
| } |
| |
| main() { |
| returnInt1(); |
| returnDyn1(); |
| returnInt2(); |
| returnDyn2(); |
| returnInt3(); |
| returnDyn3(); |
| returnInt4(); |
| returnNum1(); |
| returnIntOrNull(); |
| new A().foo(); |
| } |
| """; |
| |
| void main() { |
| Uri uri = new Uri(scheme: 'source'); |
| var compiler = compilerFor(TEST, uri); |
| asyncTest(() => compiler.run(uri).then((_) { |
| var typesInferrer = compiler.globalInference.typesInferrerInternal; |
| |
| checkReturn(String name, type) { |
| var element = findElement(compiler, name); |
| Expect.equals( |
| type, |
| simplify(typesInferrer.getReturnTypeOfElement(element), compiler), |
| name); |
| } |
| |
| checkReturn('returnInt1', compiler.closedWorld.commonMasks.uint31Type); |
| checkReturn('returnInt2', compiler.closedWorld.commonMasks.uint31Type); |
| checkReturn('returnInt3', compiler.closedWorld.commonMasks.uint31Type); |
| checkReturn('returnInt4', compiler.closedWorld.commonMasks.uint31Type); |
| checkReturn('returnIntOrNull', |
| compiler.closedWorld.commonMasks.uint31Type.nullable()); |
| |
| checkReturn('returnDyn1', |
| compiler.closedWorld.commonMasks.dynamicType.nonNullable()); |
| checkReturn('returnDyn2', |
| compiler.closedWorld.commonMasks.dynamicType.nonNullable()); |
| checkReturn('returnDyn3', |
| compiler.closedWorld.commonMasks.dynamicType.nonNullable()); |
| checkReturn('returnNum1', compiler.closedWorld.commonMasks.numType); |
| |
| checkReturnInClass(String className, String methodName, type) { |
| var cls = findElement(compiler, className); |
| var element = cls.lookupLocalMember(methodName); |
| Expect.equals( |
| type, |
| simplify( |
| typesInferrer.getReturnTypeOfElement(element), compiler)); |
| } |
| |
| var cls = findElement(compiler, 'A'); |
| checkReturnInClass( |
| 'A', 'foo', new TypeMask.nonNullExact(cls, compiler.closedWorld)); |
| })); |
| } |