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1 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 library analyzer.test.generated.strong_mode_test; | 5 library analyzer.test.generated.strong_mode_test; |
6 | 6 |
7 import 'dart:async'; | 7 import 'dart:async'; |
8 | 8 |
9 import 'package:analyzer/dart/ast/ast.dart'; | 9 import 'package:analyzer/dart/ast/ast.dart'; |
10 import 'package:analyzer/dart/ast/standard_resolution_map.dart'; | 10 import 'package:analyzer/dart/ast/standard_resolution_map.dart'; |
11 import 'package:analyzer/dart/element/element.dart'; | 11 import 'package:analyzer/dart/element/element.dart'; |
12 import 'package:analyzer/dart/element/type.dart'; | 12 import 'package:analyzer/dart/element/type.dart'; |
13 import 'package:analyzer/src/dart/element/element.dart'; | 13 import 'package:analyzer/src/dart/element/element.dart'; |
14 import 'package:analyzer/src/error/codes.dart'; | 14 import 'package:analyzer/src/error/codes.dart'; |
15 import 'package:analyzer/src/generated/engine.dart'; | 15 import 'package:analyzer/src/generated/engine.dart'; |
16 import 'package:analyzer/src/generated/source_io.dart'; | 16 import 'package:analyzer/src/generated/source_io.dart'; |
| 17 import 'package:analyzer/src/task/strong/ast_properties.dart'; |
17 import 'package:front_end/src/base/errors.dart'; | 18 import 'package:front_end/src/base/errors.dart'; |
18 import 'package:test/test.dart'; | 19 import 'package:test/test.dart'; |
19 import 'package:test_reflective_loader/test_reflective_loader.dart'; | 20 import 'package:test_reflective_loader/test_reflective_loader.dart'; |
20 | 21 |
21 import '../utils.dart'; | 22 import '../utils.dart'; |
22 import 'resolver_test_case.dart'; | 23 import 'resolver_test_case.dart'; |
23 | 24 |
24 main() { | 25 main() { |
25 defineReflectiveSuite(() { | 26 defineReflectiveSuite(() { |
26 defineReflectiveTests(StrongModeLocalInferenceTest); | 27 defineReflectiveTests(StrongModeLocalInferenceTest); |
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413 } | 414 } |
414 '''; | 415 '''; |
415 CompilationUnit unit = await resolveSource(code); | 416 CompilationUnit unit = await resolveSource(code); |
416 ConstructorDeclaration constructor = | 417 ConstructorDeclaration constructor = |
417 AstFinder.getConstructorInClass(unit, "A", null); | 418 AstFinder.getConstructorInClass(unit, "A", null); |
418 ConstructorFieldInitializer assignment = constructor.initializers[0]; | 419 ConstructorFieldInitializer assignment = constructor.initializers[0]; |
419 Expression exp = assignment.expression; | 420 Expression exp = assignment.expression; |
420 _isListOf(_isString)(exp.staticType); | 421 _isListOf(_isString)(exp.staticType); |
421 } | 422 } |
422 | 423 |
| 424 test_covarianceChecks() async { |
| 425 var source = addSource(r''' |
| 426 class C<T> { |
| 427 add(T t) {} |
| 428 forEach(void f(T t)) {} |
| 429 } |
| 430 class D extends C<int> { |
| 431 add(int t) {} |
| 432 forEach(void f(int t)) {} |
| 433 } |
| 434 class E extends C<int> { |
| 435 add(Object t) {} |
| 436 forEach(void f(Null t)) {} |
| 437 } |
| 438 '''); |
| 439 var unit = (await computeAnalysisResult(source)).unit; |
| 440 assertNoErrors(source); |
| 441 var cAdd = AstFinder.getMethodInClass(unit, "C", "add"); |
| 442 var covariantC = getClassCovariantParameters(AstFinder.getClass(unit, "C")); |
| 443 expect(covariantC.toList(), [cAdd.element.parameters[0]]); |
| 444 |
| 445 var dAdd = AstFinder.getMethodInClass(unit, "D", "add"); |
| 446 var covariantD = getClassCovariantParameters(AstFinder.getClass(unit, "D")); |
| 447 expect(covariantD.toList(), [dAdd.element.parameters[0]]); |
| 448 |
| 449 var covariantE = getClassCovariantParameters(AstFinder.getClass(unit, "E")); |
| 450 expect(covariantE.toList(), []); |
| 451 } |
| 452 |
| 453 test_covarianceChecks_genericMethods() async { |
| 454 var source = addSource(r''' |
| 455 class C<T> { |
| 456 add<S>(T t) {} |
| 457 forEach<S>(S f(T t)) {} |
| 458 } |
| 459 class D extends C<int> { |
| 460 add<S>(int t) {} |
| 461 forEach<S>(S f(int t)) {} |
| 462 } |
| 463 class E extends C<int> { |
| 464 add<S>(Object t) {} |
| 465 forEach<S>(S f(Null t)) {} |
| 466 } |
| 467 '''); |
| 468 var unit = (await computeAnalysisResult(source)).unit; |
| 469 assertNoErrors(source); |
| 470 |
| 471 var cAdd = AstFinder.getMethodInClass(unit, "C", "add"); |
| 472 var covariantC = getClassCovariantParameters(AstFinder.getClass(unit, "C")); |
| 473 expect(covariantC.toList(), [cAdd.element.parameters[0]]); |
| 474 |
| 475 var dAdd = AstFinder.getMethodInClass(unit, "D", "add"); |
| 476 var covariantD = getClassCovariantParameters(AstFinder.getClass(unit, "D")); |
| 477 expect(covariantD.toList(), [dAdd.element.parameters[0]]); |
| 478 |
| 479 var covariantE = getClassCovariantParameters(AstFinder.getClass(unit, "E")); |
| 480 expect(covariantE.toList(), []); |
| 481 } |
| 482 |
| 483 test_covarianceChecks_superclass() async { |
| 484 var source = addSource(r''' |
| 485 class C<T> { |
| 486 add(T t) {} |
| 487 forEach(void f(T t)) {} |
| 488 } |
| 489 class D { |
| 490 add(int t) {} |
| 491 forEach(void f(int t)) {} |
| 492 } |
| 493 class E extends D implements C<int> {} |
| 494 '''); |
| 495 var unit = (await computeAnalysisResult(source)).unit; |
| 496 assertNoErrors(source); |
| 497 var cAdd = AstFinder.getMethodInClass(unit, "C", "add"); |
| 498 var covariantC = getClassCovariantParameters(AstFinder.getClass(unit, "C")); |
| 499 expect(covariantC.toList(), [cAdd.element.parameters[0]]); |
| 500 |
| 501 var dAdd = AstFinder.getMethodInClass(unit, "D", "add"); |
| 502 var covariantD = getClassCovariantParameters(AstFinder.getClass(unit, "D")); |
| 503 expect(covariantD, null); |
| 504 |
| 505 var classE = AstFinder.getClass(unit, "E"); |
| 506 var covariantE = getClassCovariantParameters(classE); |
| 507 var superCovariantE = getSuperclassCovariantParameters(classE); |
| 508 expect(covariantE.toList(), []); |
| 509 expect(superCovariantE.toList(), [dAdd.element.parameters[0]]); |
| 510 } |
| 511 |
| 512 @soloTest |
| 513 test_covarianceChecks_returnFunction() async { |
| 514 var source = addSource(r''' |
| 515 typedef F<T>(T t); |
| 516 typedef T R<T>(); |
| 517 class C<T> { |
| 518 F<T> f; |
| 519 |
| 520 C(); |
| 521 factory C.fact() => new C<Null>(); |
| 522 |
| 523 F<T> get g => null; |
| 524 F<T> m1() => null; |
| 525 R<F<T>> m2() => null; |
| 526 |
| 527 casts(C<T> other, T t) { |
| 528 other.f; |
| 529 other.g(t); |
| 530 other.m1(); |
| 531 other.m2; |
| 532 |
| 533 new C<T>.fact().f(t); |
| 534 new C<int>.fact().g; |
| 535 new C<int>.fact().m1; |
| 536 new C<T>.fact().m2(); |
| 537 |
| 538 new C<Object>.fact().f(42); |
| 539 new C<Object>.fact().g; |
| 540 new C<Object>.fact().m1; |
| 541 new C<Object>.fact().m2(); |
| 542 } |
| 543 |
| 544 noCasts(T t) { |
| 545 f; |
| 546 g; |
| 547 m1(); |
| 548 m2(); |
| 549 |
| 550 f(t); |
| 551 g(t); |
| 552 (f)(t); |
| 553 (g)(t); |
| 554 m1; |
| 555 m2; |
| 556 |
| 557 this.f; |
| 558 this.g; |
| 559 this.m1(); |
| 560 this.m2(); |
| 561 this.m1; |
| 562 this.m2; |
| 563 (this.m1)(); |
| 564 (this.m2)(); |
| 565 this.f(t); |
| 566 this.g(t); |
| 567 (this.f)(t); |
| 568 (this.g)(t); |
| 569 |
| 570 new C<int>().f; |
| 571 new C<T>().g; |
| 572 new C<int>().m1(); |
| 573 new C().m2(); |
| 574 |
| 575 new D().f; |
| 576 new D().g; |
| 577 new D().m1(); |
| 578 new D().m2(); |
| 579 |
| 580 // fuzzy arrows are currently checked at the call, they skip this cast. |
| 581 new C.fact().f(42); |
| 582 new C.fact().g; |
| 583 new C.fact().m1; |
| 584 new C.fact().m2(); |
| 585 } |
| 586 } |
| 587 class D extends C<num> { |
| 588 noCasts(t) { |
| 589 f; |
| 590 this.g; |
| 591 this.m1(); |
| 592 m2; |
| 593 |
| 594 super.f; |
| 595 super.g; |
| 596 super.m1; |
| 597 super.m2(); |
| 598 } |
| 599 } |
| 600 |
| 601 D d; |
| 602 C<Object> c; |
| 603 C cD; |
| 604 C<Null> cN; |
| 605 F<Object> f; |
| 606 F<Null> fN; |
| 607 R<F<Object>> rf; |
| 608 R<F<Null>> rfN; |
| 609 R<R<F<Object>>> rrf; |
| 610 R<R<F<Null>>> rrfN; |
| 611 Object obj; |
| 612 F<int> fi; |
| 613 R<F<int>> rfi; |
| 614 R<R<F<int>>> rrfi; |
| 615 |
| 616 casts() { |
| 617 c.f; |
| 618 c.g; |
| 619 c.m1; |
| 620 c.m1(); |
| 621 c.m2(); |
| 622 |
| 623 fN = c.f; |
| 624 fN = c.g; |
| 625 rfN = c.m1; |
| 626 rrfN = c.m2; |
| 627 fN = c.m1(); |
| 628 rfN = c.m2(); |
| 629 |
| 630 f = c.f; |
| 631 f = c.g; |
| 632 rf = c.m1; |
| 633 rrf = c.m2; |
| 634 f = c.m1(); |
| 635 rf = c.m2(); |
| 636 c.m2()(); |
| 637 |
| 638 c.f(obj); |
| 639 c.g(obj); |
| 640 (c.f)(obj); |
| 641 (c.g)(obj); |
| 642 (c.m1)(); |
| 643 c.m1()(obj); |
| 644 (c.m2)(); |
| 645 } |
| 646 |
| 647 noCasts() { |
| 648 fi = d.f; |
| 649 fi = d.g; |
| 650 rfi = d.m1; |
| 651 fi = d.m1(); |
| 652 rrfi = d.m2; |
| 653 rfi = d.m2(); |
| 654 d.f(42); |
| 655 d.g(42); |
| 656 (d.f)(42); |
| 657 (d.g)(42); |
| 658 d.m1()(42); |
| 659 d.m2()()(42); |
| 660 |
| 661 cN.f; |
| 662 cN.g; |
| 663 cN.m1; |
| 664 cN.m1(); |
| 665 cN.m2(); |
| 666 |
| 667 // fuzzy arrows are currently checked at the call, they skip this cast. |
| 668 cD.f; |
| 669 cD.g; |
| 670 cD.m1; |
| 671 cD.m1(); |
| 672 cD.m2(); |
| 673 } |
| 674 '''); |
| 675 var unit = (await computeAnalysisResult(source)).unit; |
| 676 assertNoErrors(source); |
| 677 |
| 678 void expectCast(Statement statement, bool hasCast) { |
| 679 var value = (statement as ExpressionStatement).expression; |
| 680 if (value is AssignmentExpression) { |
| 681 value = (value as AssignmentExpression).rightHandSide; |
| 682 } |
| 683 while (value is FunctionExpressionInvocation) { |
| 684 value = (value as FunctionExpressionInvocation).function; |
| 685 } |
| 686 while (value is ParenthesizedExpression) { |
| 687 value = (value as ParenthesizedExpression).expression; |
| 688 } |
| 689 var isCallingGetter = |
| 690 value is MethodInvocation && !value.methodName.name.startsWith('m'); |
| 691 var cast = isCallingGetter |
| 692 ? getImplicitOperationCast(value) |
| 693 : getImplicitCast(value); |
| 694 var castKind = isCallingGetter ? 'special cast' : 'cast'; |
| 695 expect(cast, hasCast ? isNotNull : isNull, |
| 696 reason: '`$statement` should ' + |
| 697 (hasCast ? '' : 'not ') + |
| 698 'have a $castKind on `$value`.'); |
| 699 } |
| 700 |
| 701 for (var s in AstFinder.getStatementsInMethod(unit, 'C', 'noCasts')) { |
| 702 expectCast(s, false); |
| 703 } |
| 704 for (var s in AstFinder.getStatementsInMethod(unit, 'C', 'casts')) { |
| 705 expectCast(s, true); |
| 706 } |
| 707 for (var s in AstFinder.getStatementsInMethod(unit, 'D', 'noCasts')) { |
| 708 expectCast(s, false); |
| 709 } |
| 710 for (var s in AstFinder.getStatementsInTopLevelFunction(unit, 'noCasts')) { |
| 711 expectCast(s, false); |
| 712 } |
| 713 for (var s in AstFinder.getStatementsInTopLevelFunction(unit, 'casts')) { |
| 714 expectCast(s, true); |
| 715 } |
| 716 } |
| 717 |
423 test_factoryConstructor_propagation() async { | 718 test_factoryConstructor_propagation() async { |
424 String code = r''' | 719 String code = r''' |
425 class A<T> { | 720 class A<T> { |
426 factory A() { return new B(); } | 721 factory A() { return new B(); } |
427 } | 722 } |
428 class B<S> extends A<S> {} | 723 class B<S> extends A<S> {} |
429 '''; | 724 '''; |
430 CompilationUnit unit = await resolveSource(code); | 725 CompilationUnit unit = await resolveSource(code); |
431 | 726 |
432 ConstructorDeclaration constructor = | 727 ConstructorDeclaration constructor = |
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3919 var v = x; | 4214 var v = x; |
3920 v; // marker | 4215 v; // marker |
3921 } | 4216 } |
3922 int x = 3; | 4217 int x = 3; |
3923 '''; | 4218 '''; |
3924 CompilationUnit unit = await resolveSource(code); | 4219 CompilationUnit unit = await resolveSource(code); |
3925 assertPropagatedAssignedType(code, unit, typeProvider.intType, null); | 4220 assertPropagatedAssignedType(code, unit, typeProvider.intType, null); |
3926 assertTypeOfMarkedExpression(code, unit, typeProvider.intType, null); | 4221 assertTypeOfMarkedExpression(code, unit, typeProvider.intType, null); |
3927 } | 4222 } |
3928 } | 4223 } |
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