| // Copyright (c) 2019, 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:analyzer/dart/analysis/features.dart'; |
| import 'package:analyzer/dart/element/element.dart'; |
| import 'package:analyzer/dart/element/nullability_suffix.dart'; |
| import 'package:analyzer/dart/element/type.dart'; |
| import 'package:analyzer/src/dart/element/type.dart'; |
| import 'package:analyzer/src/dart/element/type_schema.dart'; |
| import 'package:analyzer/src/dart/element/type_system.dart'; |
| import 'package:analyzer/src/dart/element/type_visitor.dart'; |
| import 'package:test/test.dart'; |
| import 'package:test_reflective_loader/test_reflective_loader.dart'; |
| |
| import '../../../generated/type_system_test.dart'; |
| |
| main() { |
| defineReflectiveSuite(() { |
| defineReflectiveTests(BoundsHelperPredicatesTest); |
| defineReflectiveTests(LowerBoundTest); |
| defineReflectiveTests(UpperBoundTest); |
| }); |
| } |
| |
| @reflectiveTest |
| class BoundsHelperPredicatesTest extends _BoundsTestBase { |
| static final Map<String, StackTrace> _isMoreBottomChecked = {}; |
| static final Map<String, StackTrace> _isMoreTopChecked = {}; |
| |
| @override |
| FeatureSet get testFeatureSet { |
| return FeatureSet.forTesting( |
| additionalFeatures: [Feature.non_nullable], |
| ); |
| } |
| |
| void isBottom(DartType type) { |
| expect(typeSystem.isBottom(type), isTrue, reason: _typeString(type)); |
| } |
| |
| void isMoreBottom(DartType T, DartType S) { |
| _assertIsBottomOrNull(T); |
| _assertIsBottomOrNull(S); |
| |
| var str = _typeString(T) + ' vs ' + _typeString(S); |
| _checkUniqueTypeStr(_isMoreBottomChecked, str); |
| |
| expect(typeSystem.isMoreBottom(T, S), isTrue, reason: str); |
| } |
| |
| void isMoreTop(DartType T, DartType S) { |
| _assertIsTopOrObject(T); |
| _assertIsTopOrObject(S); |
| |
| var str = _typeString(T) + ' vs ' + _typeString(S); |
| _checkUniqueTypeStr(_isMoreTopChecked, str); |
| |
| expect(typeSystem.isMoreTop(T, S), isTrue, reason: str); |
| } |
| |
| void isNotBottom(DartType type) { |
| expect(typeSystem.isBottom(type), isFalse, reason: _typeString(type)); |
| } |
| |
| void isNotMoreBottom(DartType T, DartType S) { |
| _assertIsBottomOrNull(T); |
| _assertIsBottomOrNull(S); |
| |
| var str = _typeString(T) + ' vs ' + _typeString(S); |
| _checkUniqueTypeStr(_isMoreBottomChecked, str); |
| |
| expect(typeSystem.isMoreBottom(T, S), isFalse, reason: str); |
| } |
| |
| void isNotMoreTop(DartType T, DartType S) { |
| _assertIsTopOrObject(T); |
| _assertIsTopOrObject(S); |
| |
| var str = _typeString(T) + ' vs ' + _typeString(S); |
| _checkUniqueTypeStr(_isMoreTopChecked, str); |
| |
| expect(typeSystem.isMoreTop(T, S), isFalse, reason: str); |
| } |
| |
| void isNotNull(DartType type) { |
| expect(typeSystem.isNull(type), isFalse, reason: _typeString(type)); |
| } |
| |
| void isNotObject(DartType type) { |
| expect(typeSystem.isObject(type), isFalse, reason: _typeString(type)); |
| } |
| |
| void isNotTop(DartType type) { |
| expect(typeSystem.isTop(type), isFalse, reason: _typeString(type)); |
| } |
| |
| void isNull(DartType type) { |
| expect(typeSystem.isNull(type), isTrue, reason: _typeString(type)); |
| } |
| |
| void isObject(DartType type) { |
| expect(typeSystem.isObject(type), isTrue, reason: _typeString(type)); |
| } |
| |
| void isTop(DartType type) { |
| expect(typeSystem.isTop(type), isTrue, reason: _typeString(type)); |
| } |
| |
| test_isBottom() { |
| TypeParameterElement T; |
| |
| // BOTTOM(Never) is true |
| isBottom(neverNone); |
| isNotBottom(neverQuestion); |
| isNotBottom(neverStar); |
| |
| // BOTTOM(X&T) is true iff BOTTOM(T) |
| T = typeParameter('T', bound: objectQuestion); |
| |
| isBottom(promotedTypeParameterTypeNone(T, neverNone)); |
| isBottom(promotedTypeParameterTypeQuestion(T, neverNone)); |
| isBottom(promotedTypeParameterTypeStar(T, neverNone)); |
| |
| isNotBottom(promotedTypeParameterTypeNone(T, neverQuestion)); |
| isNotBottom(promotedTypeParameterTypeQuestion(T, neverQuestion)); |
| isNotBottom(promotedTypeParameterTypeStar(T, neverQuestion)); |
| |
| // BOTTOM(X extends T) is true iff BOTTOM(T) |
| T = typeParameter('T', bound: neverNone); |
| isBottom(typeParameterTypeNone(T)); |
| isBottom(typeParameterTypeQuestion(T)); |
| isBottom(typeParameterTypeStar(T)); |
| |
| T = typeParameter('T', bound: neverQuestion); |
| isNotBottom(typeParameterTypeNone(T)); |
| isNotBottom(typeParameterTypeQuestion(T)); |
| isNotBottom(typeParameterTypeStar(T)); |
| |
| // BOTTOM(T) is false otherwise |
| isNotBottom(dynamicNone); |
| isNotBottom(voidNone); |
| |
| isNotBottom(objectNone); |
| isNotBottom(objectQuestion); |
| isNotBottom(objectStar); |
| |
| isNotBottom(intNone); |
| isNotBottom(intQuestion); |
| isNotBottom(intStar); |
| |
| T = typeParameter('T', bound: numNone); |
| isNotBottom(typeParameterTypeNone(T)); |
| isNotBottom(typeParameterTypeQuestion(T)); |
| isNotBottom(typeParameterTypeStar(T)); |
| |
| T = typeParameter('T', bound: numStar); |
| isNotBottom(typeParameterTypeNone(T)); |
| isNotBottom(typeParameterTypeQuestion(T)); |
| isNotBottom(typeParameterTypeStar(T)); |
| |
| isNotBottom(promotedTypeParameterTypeNone(T, intNone)); |
| isNotBottom(promotedTypeParameterTypeQuestion(T, intNone)); |
| isNotBottom(promotedTypeParameterTypeStar(T, intNone)); |
| } |
| |
| test_isMoreBottom() { |
| // MOREBOTTOM(Never, T) = true |
| isMoreBottom(neverNone, neverNone); |
| isMoreBottom(neverNone, neverQuestion); |
| isMoreBottom(neverNone, neverStar); |
| |
| isMoreBottom(neverNone, nullNone); |
| isMoreBottom(neverNone, nullQuestion); |
| isMoreBottom(neverNone, nullStar); |
| |
| // MOREBOTTOM(T, Never) = false |
| isNotMoreBottom(neverQuestion, neverNone); |
| isNotMoreBottom(neverStar, neverNone); |
| |
| isNotMoreBottom(nullNone, neverNone); |
| isNotMoreBottom(nullQuestion, neverNone); |
| isNotMoreBottom(nullStar, neverNone); |
| |
| // MOREBOTTOM(Null, T) = true |
| isMoreBottom(nullNone, neverQuestion); |
| isMoreBottom(nullNone, neverStar); |
| |
| isMoreBottom(nullNone, nullNone); |
| isMoreBottom(nullNone, nullQuestion); |
| isMoreBottom(nullNone, nullStar); |
| |
| // MOREBOTTOM(T, Null) = false |
| isNotMoreBottom(neverQuestion, nullNone); |
| isNotMoreBottom(neverStar, nullNone); |
| |
| isNotMoreBottom(nullQuestion, nullNone); |
| isNotMoreBottom(nullStar, nullNone); |
| |
| // MOREBOTTOM(T?, S?) = MOREBOTTOM(T, S) |
| isMoreBottom(neverQuestion, nullQuestion); |
| isNotMoreBottom(nullQuestion, neverQuestion); |
| |
| // MOREBOTTOM(T, S?) = true |
| isMoreBottom(neverStar, nullQuestion); |
| isMoreBottom(nullStar, neverQuestion); |
| |
| // MOREBOTTOM(T?, S) = false |
| isNotMoreBottom(neverQuestion, nullStar); |
| isNotMoreBottom(nullQuestion, neverStar); |
| |
| // MOREBOTTOM(T*, S*) = MOREBOTTOM(T, S) |
| isMoreBottom(neverStar, nullStar); |
| isNotMoreBottom(nullStar, neverStar); |
| |
| // MOREBOTTOM(T, S*) = true |
| isMoreBottom( |
| typeParameterTypeNone( |
| typeParameter('S', bound: neverNone), |
| ), |
| nullStar, |
| ); |
| |
| // MOREBOTTOM(T*, S) = false |
| isNotMoreBottom( |
| nullStar, |
| typeParameterTypeNone( |
| typeParameter('S', bound: neverNone), |
| ), |
| ); |
| |
| // MOREBOTTOM(X&T, Y&S) = MOREBOTTOM(T, S) |
| isMoreBottom( |
| promotedTypeParameterTypeNone( |
| typeParameter('T', bound: objectQuestion), |
| neverNone, |
| ), |
| promotedTypeParameterTypeQuestion( |
| typeParameter('S', bound: objectQuestion), |
| neverNone, |
| ), |
| ); |
| |
| // MOREBOTTOM(X&T, S) = true |
| isMoreBottom( |
| promotedTypeParameterTypeNone( |
| typeParameter('T', bound: objectQuestion), |
| neverNone, |
| ), |
| typeParameterTypeNone( |
| typeParameter('S', bound: neverNone), |
| ), |
| ); |
| |
| // MOREBOTTOM(T, X&S) = false |
| isNotMoreBottom( |
| typeParameterTypeNone( |
| typeParameter('T', bound: neverNone), |
| ), |
| promotedTypeParameterTypeNone( |
| typeParameter('S', bound: objectQuestion), |
| neverNone, |
| ), |
| ); |
| |
| // MOREBOTTOM(X extends T, Y extends S) = MOREBOTTOM(T, S) |
| isMoreBottom( |
| typeParameterTypeNone( |
| typeParameter('T', bound: neverNone), |
| ), |
| typeParameterTypeQuestion( |
| typeParameter('S', bound: neverNone), |
| ), |
| ); |
| } |
| |
| test_isMoreTop() { |
| // MORETOP(void, T) = true |
| isMoreTop(voidNone, voidNone); |
| isMoreTop(voidNone, dynamicNone); |
| isMoreTop(voidNone, objectNone); |
| isMoreTop(voidNone, objectQuestion); |
| isMoreTop(voidNone, objectStar); |
| isMoreTop(voidNone, futureOrNone(objectNone)); |
| isMoreTop(voidNone, futureOrNone(objectQuestion)); |
| isMoreTop(voidNone, futureOrNone(objectStar)); |
| |
| // MORETOP(T, void) = false |
| isNotMoreTop(dynamicNone, voidNone); |
| isNotMoreTop(objectNone, voidNone); |
| isNotMoreTop(objectQuestion, voidNone); |
| isNotMoreTop(objectStar, voidNone); |
| isNotMoreTop(futureOrNone(objectNone), voidNone); |
| isNotMoreTop(futureOrNone(objectQuestion), voidNone); |
| isNotMoreTop(futureOrNone(objectStar), voidNone); |
| |
| // MORETOP(dynamic, T) = true |
| isMoreTop(dynamicNone, dynamicNone); |
| isMoreTop(dynamicNone, objectNone); |
| isMoreTop(dynamicNone, objectQuestion); |
| isMoreTop(dynamicNone, objectStar); |
| isMoreTop(dynamicNone, futureOrNone(objectNone)); |
| isMoreTop(dynamicNone, futureOrNone(objectQuestion)); |
| isMoreTop(dynamicNone, futureOrNone(objectStar)); |
| |
| // MORETOP(T, dynamic) = false |
| isNotMoreTop(objectNone, dynamicNone); |
| isNotMoreTop(objectQuestion, dynamicNone); |
| isNotMoreTop(objectStar, dynamicNone); |
| isNotMoreTop(futureOrNone(objectNone), dynamicNone); |
| isNotMoreTop(futureOrNone(objectQuestion), dynamicNone); |
| isNotMoreTop(futureOrNone(objectStar), dynamicNone); |
| |
| // MORETOP(Object, T) = true |
| isMoreTop(objectNone, objectNone); |
| isMoreTop(objectNone, objectQuestion); |
| isMoreTop(objectNone, objectStar); |
| isMoreTop(objectNone, futureOrNone(objectNone)); |
| isMoreTop(objectNone, futureOrQuestion(objectNone)); |
| isMoreTop(objectNone, futureOrStar(objectNone)); |
| |
| // MORETOP(T, Object) = false |
| isNotMoreTop(objectQuestion, objectNone); |
| isNotMoreTop(objectStar, objectNone); |
| isNotMoreTop(futureOrNone(objectNone), objectNone); |
| isNotMoreTop(futureOrQuestion(objectNone), objectNone); |
| isNotMoreTop(futureOrStar(objectNone), objectNone); |
| |
| // MORETOP(T*, S*) = MORETOP(T, S) |
| isMoreTop(objectStar, objectStar); |
| isMoreTop(objectStar, futureOrStar(objectNone)); |
| isMoreTop(objectStar, futureOrStar(objectQuestion)); |
| isMoreTop(objectStar, futureOrStar(objectStar)); |
| isMoreTop(futureOrStar(objectNone), futureOrStar(objectNone)); |
| |
| // MORETOP(T, S*) = true |
| isMoreTop(futureOrNone(objectNone), futureOrStar(voidNone)); |
| isMoreTop(futureOrNone(objectNone), futureOrStar(dynamicNone)); |
| isMoreTop(futureOrNone(objectNone), futureOrStar(objectNone)); |
| isMoreTop(futureOrQuestion(objectNone), futureOrStar(voidNone)); |
| isMoreTop(futureOrQuestion(objectNone), futureOrStar(dynamicNone)); |
| isMoreTop(futureOrQuestion(objectNone), futureOrStar(objectNone)); |
| |
| // MORETOP(T*, S) = false |
| isNotMoreTop(futureOrStar(voidNone), futureOrNone(objectNone)); |
| isNotMoreTop(futureOrStar(dynamicNone), futureOrNone(objectNone)); |
| isNotMoreTop(futureOrStar(objectNone), futureOrNone(objectNone)); |
| isNotMoreTop(futureOrStar(voidNone), futureOrQuestion(objectNone)); |
| isNotMoreTop(futureOrStar(dynamicNone), futureOrQuestion(objectNone)); |
| isNotMoreTop(futureOrStar(objectNone), futureOrQuestion(objectNone)); |
| |
| // MORETOP(T?, S?) = MORETOP(T, S) |
| isMoreTop(objectQuestion, objectQuestion); |
| isMoreTop(futureOrQuestion(voidNone), futureOrQuestion(voidNone)); |
| isMoreTop(futureOrQuestion(voidNone), futureOrQuestion(dynamicNone)); |
| isMoreTop(futureOrQuestion(voidNone), futureOrQuestion(objectNone)); |
| |
| // MORETOP(T, S?) = true |
| isMoreTop(futureOrNone(objectNone), futureOrQuestion(voidNone)); |
| isMoreTop(futureOrNone(objectNone), futureOrQuestion(dynamicNone)); |
| isMoreTop(futureOrNone(objectNone), futureOrQuestion(objectNone)); |
| |
| // MORETOP(T?, S) = false |
| isNotMoreTop(futureOrQuestion(voidNone), futureOrNone(objectNone)); |
| isNotMoreTop(futureOrQuestion(dynamicNone), futureOrNone(objectNone)); |
| isNotMoreTop(futureOrQuestion(objectNone), futureOrNone(objectNone)); |
| |
| // MORETOP(FutureOr<T>, FutureOr<S>) = MORETOP(T, S) |
| isMoreTop(futureOrNone(voidNone), futureOrNone(voidNone)); |
| isMoreTop(futureOrNone(voidNone), futureOrNone(dynamicNone)); |
| isMoreTop(futureOrNone(voidNone), futureOrNone(objectNone)); |
| isNotMoreTop(futureOrNone(dynamicNone), futureOrNone(voidNone)); |
| isNotMoreTop(futureOrNone(objectNone), futureOrNone(voidNone)); |
| } |
| |
| test_isNull() { |
| // NULL(Null) is true |
| isNull(nullNone); |
| |
| // NULL(T?) is true iff NULL(T) or BOTTOM(T) |
| isNull(nullQuestion); |
| isNull(neverQuestion); |
| isNull( |
| typeParameterTypeQuestion( |
| typeParameter('T', bound: neverNone), |
| ), |
| ); |
| |
| // NULL(T*) is true iff NULL(T) or BOTTOM(T) |
| isNull(nullStar); |
| isNull(neverStar); |
| isNull( |
| typeParameterTypeStar( |
| typeParameter('T', bound: neverNone), |
| ), |
| ); |
| |
| // NULL(T) is false otherwise |
| isNotNull(dynamicNone); |
| isNotNull(voidNone); |
| |
| isNotNull(objectNone); |
| isNotNull(objectQuestion); |
| isNotNull(objectStar); |
| |
| isNotNull(intNone); |
| isNotNull(intQuestion); |
| isNotNull(intStar); |
| |
| isNotNull(futureOrNone(nullNone)); |
| isNotNull(futureOrNone(nullQuestion)); |
| isNotNull(futureOrNone(nullStar)); |
| |
| isNotNull(futureOrQuestion(nullNone)); |
| isNotNull(futureOrQuestion(nullQuestion)); |
| isNotNull(futureOrQuestion(nullStar)); |
| |
| isNotNull(futureOrStar(nullNone)); |
| isNotNull(futureOrStar(nullQuestion)); |
| isNotNull(futureOrStar(nullStar)); |
| } |
| |
| test_isObject() { |
| // OBJECT(Object) is true |
| isObject(objectNone); |
| isNotObject(objectQuestion); |
| isNotObject(objectStar); |
| |
| // OBJECT(FutureOr<T>) is OBJECT(T) |
| isObject(futureOrNone(objectNone)); |
| isNotObject(futureOrNone(objectQuestion)); |
| isNotObject(futureOrNone(objectStar)); |
| |
| isNotObject(futureOrQuestion(objectNone)); |
| isNotObject(futureOrQuestion(objectQuestion)); |
| isNotObject(futureOrQuestion(objectStar)); |
| |
| isNotObject(futureOrStar(objectNone)); |
| isNotObject(futureOrStar(objectQuestion)); |
| isNotObject(futureOrStar(objectStar)); |
| |
| // OBJECT(T) is false otherwise |
| isNotObject(dynamicNone); |
| isNotObject(voidNone); |
| isNotObject(intNone); |
| } |
| |
| test_isTop() { |
| // TOP(T?) is true iff TOP(T) or OBJECT(T) |
| isTop(objectQuestion); |
| isTop(futureOrQuestion(dynamicNone)); |
| isTop(futureOrQuestion(voidNone)); |
| |
| isTop(futureOrQuestion(objectNone)); |
| isTop(futureOrQuestion(objectQuestion)); |
| isTop(futureOrQuestion(objectStar)); |
| |
| isNotTop(futureOrQuestion(intNone)); |
| isNotTop(futureOrQuestion(intQuestion)); |
| isNotTop(futureOrQuestion(intStar)); |
| |
| // TOP(T*) is true iff TOP(T) or OBJECT(T) |
| isTop(objectStar); |
| isTop(futureOrStar(dynamicNone)); |
| isTop(futureOrStar(voidNone)); |
| |
| isTop(futureOrStar(objectNone)); |
| isTop(futureOrStar(objectQuestion)); |
| isTop(futureOrStar(objectStar)); |
| |
| isNotTop(futureOrStar(intNone)); |
| isNotTop(futureOrStar(intQuestion)); |
| isNotTop(futureOrStar(intStar)); |
| |
| // TOP(dynamic) is true |
| isTop(dynamicNone); |
| isTop(UnknownInferredType.instance); |
| |
| // TOP(void) is true |
| isTop(voidNone); |
| |
| // TOP(FutureOr<T>) is TOP(T) |
| isTop(futureOrNone(dynamicNone)); |
| isTop(futureOrNone(voidNone)); |
| |
| isNotTop(futureOrNone(objectNone)); |
| isTop(futureOrNone(objectQuestion)); |
| isTop(futureOrNone(objectStar)); |
| |
| // TOP(T) is false otherwise |
| isNotTop(objectNone); |
| |
| isNotTop(intNone); |
| isNotTop(intQuestion); |
| isNotTop(intStar); |
| |
| isNotTop(neverNone); |
| isNotTop(neverQuestion); |
| isNotTop(neverStar); |
| } |
| |
| /// [TypeSystemImpl.isMoreBottom] can be used only for `BOTTOM` or `NULL` |
| /// types. No need to check other types. |
| void _assertIsBottomOrNull(DartType type) { |
| expect(typeSystem.isBottom(type) || typeSystem.isNull(type), isTrue, |
| reason: _typeString(type)); |
| } |
| |
| /// [TypeSystemImpl.isMoreTop] can be used only for `TOP` or `OBJECT` |
| /// types. No need to check other types. |
| void _assertIsTopOrObject(DartType type) { |
| expect(typeSystem.isTop(type) || typeSystem.isObject(type), isTrue, |
| reason: _typeString(type)); |
| } |
| |
| void _checkUniqueTypeStr(Map<String, StackTrace> map, String str) { |
| var previousStack = map[str]; |
| if (previousStack != null) { |
| fail('Not unique: $str\n$previousStack'); |
| } else { |
| map[str] = StackTrace.current; |
| } |
| } |
| } |
| |
| @reflectiveTest |
| class LowerBoundTest extends _BoundsTestBase { |
| test_bottom_any() { |
| void check(DartType T1, DartType T2) { |
| expect(typeSystem.isBottom(T1), isTrue, reason: _typeString(T1)); |
| expect(typeSystem.isBottom(T2), isFalse, reason: _typeString(T2)); |
| _checkGreatestLowerBound(T1, T2, T1); |
| } |
| |
| check(neverNone, objectNone); |
| check(neverNone, objectStar); |
| check(neverNone, objectQuestion); |
| |
| check(neverNone, intNone); |
| check(neverNone, intQuestion); |
| check(neverNone, intStar); |
| |
| check(neverNone, listNone(intNone)); |
| check(neverNone, listQuestion(intNone)); |
| check(neverNone, listStar(intNone)); |
| |
| check(neverNone, futureOrNone(intNone)); |
| check(neverNone, futureOrQuestion(intNone)); |
| check(neverNone, futureOrStar(intNone)); |
| |
| { |
| var T = typeParameterTypeNone( |
| typeParameter('T', bound: neverNone), |
| ); |
| check(T, intNone); |
| check(T, intQuestion); |
| check(T, intStar); |
| } |
| |
| { |
| var T = promotedTypeParameterTypeNone( |
| typeParameter('T', bound: objectQuestion), |
| neverNone, |
| ); |
| check(T, intNone); |
| check(T, intQuestion); |
| check(T, intStar); |
| } |
| } |
| |
| test_bottom_bottom() { |
| void check(DartType T1, DartType T2) { |
| expect(typeSystem.isBottom(T1), isTrue, reason: _typeString(T1)); |
| expect(typeSystem.isBottom(T2), isTrue, reason: _typeString(T2)); |
| _checkGreatestLowerBound(T1, T2, T1); |
| } |
| |
| check( |
| neverNone, |
| typeParameterTypeNone( |
| typeParameter('T', bound: neverNone), |
| ), |
| ); |
| |
| check( |
| neverNone, |
| promotedTypeParameterTypeNone( |
| typeParameter('T', bound: objectQuestion), |
| neverNone, |
| ), |
| ); |
| } |
| |
| test_functionType2_parameters_conflicts() { |
| _checkGreatestLowerBound( |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| requiredParameter(name: 'a', type: intNone), |
| ], |
| ), |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| namedParameter(name: 'a', type: intNone), |
| ], |
| ), |
| neverNone, |
| ); |
| |
| _checkGreatestLowerBound( |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| positionalParameter(name: 'a', type: intNone), |
| ], |
| ), |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| namedParameter(name: 'a', type: intNone), |
| ], |
| ), |
| neverNone, |
| ); |
| } |
| |
| test_functionType2_parameters_named() { |
| FunctionType build( |
| List<DartType> requiredTypes, |
| Map<String, DartType> namedMap, |
| Map<String, DartType> namedRequiredMap, |
| ) { |
| var parameters = <ParameterElement>[]; |
| |
| for (var requiredType in requiredTypes) { |
| parameters.add( |
| requiredParameter(type: requiredType), |
| ); |
| } |
| |
| for (var entry in namedMap.entries) { |
| parameters.add( |
| namedParameter(name: entry.key, type: entry.value), |
| ); |
| } |
| |
| for (var entry in namedRequiredMap.entries) { |
| parameters.add( |
| namedRequiredParameter(name: entry.key, type: entry.value), |
| ); |
| } |
| |
| return functionTypeNone( |
| returnType: voidNone, |
| parameters: parameters, |
| ); |
| } |
| |
| void check(FunctionType T1, FunctionType T2, DartType expected) { |
| _checkGreatestLowerBound(T1, T2, expected); |
| } |
| |
| check( |
| build([], {}, {}), |
| build([], {}, {}), |
| build([], {}, {}), |
| ); |
| |
| { |
| check( |
| build([], {'a': intNone}, {}), |
| build([], {'a': intNone}, {}), |
| build([], {'a': intNone}, {}), |
| ); |
| |
| check( |
| build([], {'a': intNone}, {}), |
| build([], {}, {'a': intNone}), |
| build([], {'a': intNone}, {}), |
| ); |
| |
| check( |
| build([], {}, {'a': intNone}), |
| build([], {}, {'a': intNone}), |
| build([], {}, {'a': intNone}), |
| ); |
| } |
| |
| { |
| check( |
| build([], {'a': intNone, 'b': intNone}, {}), |
| build([], {'a': intNone, 'c': intNone}, {}), |
| build([], {'a': intNone, 'b': intNone, 'c': intNone}, {}), |
| ); |
| |
| check( |
| build([], {'a': intNone}, {'b': intNone}), |
| build([], {'a': intNone}, {'c': intNone}), |
| build([], {'a': intNone, 'b': intNone, 'c': intNone}, {}), |
| ); |
| } |
| |
| { |
| check( |
| build([], {'a': intNone}, {}), |
| build([], {'a': numNone}, {}), |
| build([], {'a': numNone}, {}), |
| ); |
| |
| check( |
| build([], {'a': intNone}, {}), |
| build([], {'a': doubleNone}, {}), |
| build([], {'a': numNone}, {}), |
| ); |
| |
| check( |
| build([], {'a': intNone}, {}), |
| build([], {'a': doubleQuestion}, {}), |
| build([], {'a': numQuestion}, {}), |
| ); |
| |
| check( |
| build([], {'a': intNone}, {}), |
| build([], {'a': doubleStar}, {}), |
| build([], {'a': numStar}, {}), |
| ); |
| } |
| } |
| |
| test_functionType2_parameters_positional() { |
| FunctionType build( |
| List<DartType> requiredTypes, |
| List<DartType> positionalTypes, |
| ) { |
| var parameters = <ParameterElement>[]; |
| |
| for (var requiredType in requiredTypes) { |
| parameters.add( |
| requiredParameter(type: requiredType), |
| ); |
| } |
| |
| for (var positionalType in positionalTypes) { |
| parameters.add( |
| positionalParameter(type: positionalType), |
| ); |
| } |
| |
| return functionTypeNone( |
| returnType: voidNone, |
| parameters: parameters, |
| ); |
| } |
| |
| void check(FunctionType T1, FunctionType T2, DartType expected) { |
| _checkGreatestLowerBound(T1, T2, expected); |
| } |
| |
| check( |
| build([], []), |
| build([], []), |
| build([], []), |
| ); |
| |
| check( |
| build([intNone], []), |
| build([intNone], []), |
| build([intNone], []), |
| ); |
| |
| check( |
| build([intNone], []), |
| build([numNone], []), |
| build([numNone], []), |
| ); |
| |
| check( |
| build([intNone], []), |
| build([doubleNone], []), |
| build([numNone], []), |
| ); |
| |
| check( |
| build([intNone], []), |
| build([doubleQuestion], []), |
| build([numQuestion], []), |
| ); |
| |
| check( |
| build([intNone], []), |
| build([doubleStar], []), |
| build([numStar], []), |
| ); |
| |
| { |
| check( |
| build([intNone], []), |
| build([], [intNone]), |
| build([], [intNone]), |
| ); |
| |
| check( |
| build([intNone], []), |
| build([], []), |
| build([], [intNone]), |
| ); |
| |
| check( |
| build([], [intNone]), |
| build([], [intNone]), |
| build([], [intNone]), |
| ); |
| |
| check( |
| build([], [intNone]), |
| build([], []), |
| build([], [intNone]), |
| ); |
| } |
| } |
| |
| test_functionType2_returnType() { |
| void check(DartType T1_ret, DartType T2_ret, DartType expected_ret) { |
| _checkGreatestLowerBound( |
| functionTypeNone(returnType: T1_ret), |
| functionTypeNone(returnType: T2_ret), |
| functionTypeNone(returnType: expected_ret), |
| ); |
| } |
| |
| check(intNone, intNone, intNone); |
| check(intNone, numNone, intNone); |
| |
| check(intNone, voidNone, intNone); |
| check(intNone, neverNone, neverNone); |
| } |
| |
| test_functionType2_typeParameters() { |
| void check(FunctionType T1, FunctionType T2, DartType expected) { |
| _assertNullabilityNone(T1); |
| _assertNullabilityNone(T2); |
| |
| _checkGreatestLowerBound(T1, T2, expected, checkSubtype: false); |
| } |
| |
| check( |
| functionTypeNone( |
| returnType: voidNone, |
| typeFormals: [ |
| typeParameter('T'), |
| ], |
| ), |
| functionTypeNone(returnType: voidNone), |
| neverNone, |
| ); |
| |
| check( |
| functionTypeNone( |
| returnType: voidNone, |
| typeFormals: [ |
| typeParameter('T', bound: intNone), |
| ], |
| ), |
| functionTypeNone( |
| returnType: voidNone, |
| typeFormals: [ |
| typeParameter('T', bound: numNone), |
| ], |
| ), |
| neverNone, |
| ); |
| |
| { |
| var T = typeParameter('T', bound: numNone); |
| var U = typeParameter('U', bound: numNone); |
| var R = typeParameter('R', bound: numNone); |
| check( |
| functionTypeNone( |
| returnType: typeParameterTypeNone(T), |
| typeFormals: [T], |
| ), |
| functionTypeNone( |
| returnType: typeParameterTypeNone(U), |
| typeFormals: [U], |
| ), |
| functionTypeNone( |
| returnType: typeParameterTypeNone(R), |
| typeFormals: [R], |
| ), |
| ); |
| } |
| } |
| |
| test_functionType_interfaceType() { |
| void check(FunctionType T1, InterfaceType T2, DartType expected) { |
| _checkGreatestLowerBound(T1, T2, expected); |
| } |
| |
| check( |
| functionTypeNone(returnType: voidNone), |
| intNone, |
| neverNone, |
| ); |
| } |
| |
| test_functionType_interfaceType_Function() { |
| void check(FunctionType T1) { |
| _assertNullabilityNone(T1); |
| _checkGreatestLowerBound(T1, functionNone, T1); |
| } |
| |
| check(functionTypeNone(returnType: voidNone)); |
| |
| check( |
| functionTypeNone( |
| returnType: intNone, |
| parameters: [ |
| requiredParameter(type: numQuestion), |
| ], |
| ), |
| ); |
| } |
| |
| test_futureOr() { |
| InterfaceType futureOrFunction(DartType T, String str) { |
| var result = futureOrNone( |
| functionTypeNone(returnType: voidNone, parameters: [ |
| requiredParameter(type: T), |
| ]), |
| ); |
| expect(result.getDisplayString(withNullability: true), str); |
| return result; |
| } |
| |
| // DOWN(FutureOr<T1>, FutureOr<T2>) = FutureOr<S>, S = DOWN(T1, T2) |
| _checkGreatestLowerBound( |
| futureOrNone(intNone), |
| futureOrNone(numNone), |
| futureOrNone(intNone), |
| ); |
| _checkGreatestLowerBound( |
| futureOrFunction(intNone, 'FutureOr<void Function(int)>'), |
| futureOrFunction(doubleNone, 'FutureOr<void Function(double)>'), |
| futureOrFunction(numNone, 'FutureOr<void Function(num)>'), |
| ); |
| |
| // DOWN(FutureOr<T1>, Future<T2>) = Future<S>, S = DOWN(T1, T2) |
| // DOWN(Future<T1>, FutureOr<T2>) = Future<S>, S = DOWN(T1, T2) |
| _checkGreatestLowerBound( |
| futureOrNone(numNone), |
| futureNone(intNone), |
| futureNone(intNone), |
| ); |
| _checkGreatestLowerBound( |
| futureOrNone(intNone), |
| futureNone(numNone), |
| futureNone(intNone), |
| ); |
| |
| // DOWN(FutureOr<T1>, T2) = S, S = DOWN(T1, T2) |
| // DOWN(T1, FutureOr<T2>) = S, S = DOWN(T1, T2) |
| _checkGreatestLowerBound( |
| futureOrNone(numNone), |
| intNone, |
| intNone, |
| ); |
| _checkGreatestLowerBound( |
| futureOrNone(intNone), |
| numNone, |
| intNone, |
| ); |
| } |
| |
| test_identical() { |
| void check(DartType type) { |
| _checkGreatestLowerBound(type, type, type); |
| } |
| |
| check(intNone); |
| check(intQuestion); |
| check(intStar); |
| check(listNone(intNone)); |
| } |
| |
| test_interfaceType2() { |
| void check(InterfaceType T1, InterfaceType T2, DartType expected) { |
| _assertNullabilityNone(T1); |
| _assertNullabilityNone(T2); |
| |
| _checkGreatestLowerBound(T1, T2, expected); |
| } |
| |
| check(intNone, intNone, intNone); |
| check(numNone, intNone, intNone); |
| check(doubleNone, intNone, neverNone); |
| |
| check(listNone(intNone), listNone(intNone), listNone(intNone)); |
| check(listNone(numNone), listNone(intNone), listNone(intNone)); |
| check(listNone(doubleNone), listNone(intNone), neverNone); |
| } |
| |
| void test_interfaceType2_interfaces() { |
| // class A |
| // class B implements A |
| // class C implements B |
| var A = class_(name: 'A'); |
| var B = class_(name: 'B', interfaces: [interfaceTypeNone(A)]); |
| var C = class_(name: 'C', interfaces: [interfaceTypeNone(B)]); |
| _checkGreatestLowerBound( |
| interfaceTypeNone(A), |
| interfaceTypeNone(C), |
| interfaceTypeNone(C), |
| ); |
| } |
| |
| void test_interfaceType2_mixins() { |
| // class A |
| // class B |
| // class C |
| // class D extends A with B, C |
| var A = class_(name: 'A'); |
| var typeA = interfaceTypeNone(A); |
| |
| var B = class_(name: 'B'); |
| var typeB = interfaceTypeNone(B); |
| |
| var C = class_(name: 'C'); |
| var typeC = interfaceTypeNone(C); |
| |
| var D = class_( |
| name: 'D', |
| superType: interfaceTypeNone(A), |
| mixins: [typeB, typeC], |
| ); |
| var typeD = interfaceTypeNone(D); |
| |
| _checkGreatestLowerBound(typeA, typeD, typeD); |
| _checkGreatestLowerBound(typeB, typeD, typeD); |
| _checkGreatestLowerBound(typeC, typeD, typeD); |
| } |
| |
| void test_interfaceType2_superType() { |
| // class A |
| // class B extends A |
| // class C extends B |
| var A = class_(name: 'A'); |
| var B = class_(name: 'B', superType: interfaceTypeNone(A)); |
| var C = class_(name: 'C', superType: interfaceTypeNone(B)); |
| _checkGreatestLowerBound( |
| interfaceTypeNone(A), |
| interfaceTypeNone(C), |
| interfaceTypeNone(C), |
| ); |
| } |
| |
| test_none_question() { |
| void check(DartType T1, DartType T2, DartType expected) { |
| _assertNullabilityNone(T1); |
| _assertNullabilityQuestion(T2); |
| |
| _assertNotSpecial(T1); |
| _assertNotSpecial(T2); |
| |
| _checkGreatestLowerBound(T1, T2, expected); |
| } |
| |
| check(intNone, intQuestion, intNone); |
| |
| check(numNone, intQuestion, intNone); |
| check(intNone, numQuestion, intNone); |
| |
| check(doubleNone, intQuestion, neverNone); |
| check(intNone, doubleQuestion, neverNone); |
| } |
| |
| test_none_star() { |
| void check(DartType T1, DartType T2, DartType expected) { |
| _assertNullabilityNone(T1); |
| _assertNullabilityStar(T2); |
| |
| _assertNotSpecial(T1); |
| _assertNotSpecial(T2); |
| |
| _checkGreatestLowerBound(T1, T2, expected); |
| } |
| |
| check(intNone, intStar, intNone); |
| |
| check(numNone, intStar, intNone); |
| check(intNone, numStar, intNone); |
| |
| check(doubleNone, intStar, neverNone); |
| check(intNone, doubleStar, neverNone); |
| } |
| |
| test_null_any() { |
| void check(DartType T2, DartType expected) { |
| var T2_str = _typeString(T2); |
| |
| expect(typeSystem.isNull(T2), isFalse, reason: 'isNull: $T2_str'); |
| expect(typeSystem.isTop(T2), isFalse, reason: 'isTop: $T2_str'); |
| expect(typeSystem.isBottom(T2), isFalse, reason: 'isBottom: $T2_str'); |
| |
| _checkGreatestLowerBound(nullNone, T2, expected); |
| } |
| |
| void checkNull(DartType T2) { |
| check(T2, nullNone); |
| } |
| |
| void checkNever(DartType T2) { |
| check(T2, neverNone); |
| } |
| |
| checkNull(futureOrNone(nullNone)); |
| checkNull(futureOrNone(nullQuestion)); |
| checkNull(futureOrNone(nullStar)); |
| |
| checkNull(futureOrQuestion(nullNone)); |
| checkNull(futureOrQuestion(nullQuestion)); |
| checkNull(futureOrQuestion(nullStar)); |
| |
| checkNull(futureOrStar(nullNone)); |
| checkNull(futureOrStar(nullQuestion)); |
| checkNull(futureOrStar(nullStar)); |
| |
| checkNever(objectNone); |
| |
| checkNever(intNone); |
| checkNull(intQuestion); |
| checkNull(intStar); |
| |
| checkNever(listNone(intNone)); |
| checkNull(listQuestion(intNone)); |
| checkNull(listStar(intNone)); |
| |
| checkNever(listNone(intQuestion)); |
| checkNull(listQuestion(intQuestion)); |
| checkNull(listStar(intQuestion)); |
| } |
| |
| test_null_null() { |
| void check(DartType T1, DartType T2) { |
| var T1_str = _typeString(T1); |
| var T2_str = _typeString(T2); |
| |
| expect(typeSystem.isNull(T1), isTrue, reason: 'isNull: $T1_str'); |
| expect(typeSystem.isNull(T2), isTrue, reason: 'isNull: $T2_str'); |
| |
| expect(typeSystem.isBottom(T1), isFalse, reason: 'isBottom: $T1_str'); |
| expect(typeSystem.isBottom(T2), isFalse, reason: 'isBottom: $T2_str'); |
| |
| _checkGreatestLowerBound(T1, T2, T1); |
| } |
| |
| check(nullNone, nullQuestion); |
| check(nullNone, nullStar); |
| } |
| |
| test_object_any() { |
| void check(DartType T2, DartType expected) { |
| var T2_str = _typeString(T2); |
| expect(typeSystem.isObject(T2), isFalse, reason: 'isObject: $T2_str'); |
| |
| _checkGreatestLowerBound(objectNone, T2, expected); |
| } |
| |
| void checkNever(DartType T2) { |
| check(T2, neverNone); |
| } |
| |
| check(intNone, intNone); |
| check(intQuestion, intNone); |
| check(intStar, intStar); |
| |
| check(futureOrNone(intNone), futureOrNone(intNone)); |
| check(futureOrQuestion(intNone), futureOrNone(intNone)); |
| check(futureOrNone(intNone), futureOrNone(intNone)); |
| |
| checkNever(futureOrNone(intQuestion)); |
| checkNever(futureOrQuestion(intQuestion)); |
| checkNever(futureOrNone(intQuestion)); |
| |
| { |
| var T = typeParameter('T', bound: objectNone); |
| check(typeParameterTypeNone(T), typeParameterTypeNone(T)); |
| check(typeParameterTypeQuestion(T), typeParameterTypeNone(T)); |
| check(typeParameterTypeStar(T), typeParameterTypeStar(T)); |
| } |
| |
| { |
| var T = typeParameter('T', bound: objectQuestion); |
| check( |
| typeParameterTypeNone(T), |
| promotedTypeParameterTypeNone(T, objectNone), |
| ); |
| check( |
| typeParameterTypeQuestion(T), |
| promotedTypeParameterTypeNone(T, objectNone), |
| ); |
| check( |
| typeParameterTypeStar(T), |
| promotedTypeParameterTypeNone(T, objectNone), |
| ); |
| } |
| |
| { |
| var T = typeParameter('T', bound: futureOrNone(objectQuestion)); |
| checkNever(typeParameterTypeNone(T)); |
| checkNever(typeParameterTypeQuestion(T)); |
| checkNever(typeParameterTypeStar(T)); |
| } |
| } |
| |
| test_object_object() { |
| void check(DartType T1, DartType T2) { |
| var T1_str = _typeString(T1); |
| var T2_str = _typeString(T2); |
| |
| expect(typeSystem.isObject(T1), isTrue, reason: 'isObject: $T1_str'); |
| expect(typeSystem.isObject(T2), isTrue, reason: 'isObject: $T2_str'); |
| |
| _checkGreatestLowerBound(T1, T2, T1); |
| } |
| |
| check(futureOrNone(objectNone), objectNone); |
| |
| check( |
| futureOrNone( |
| futureOrNone(objectNone), |
| ), |
| futureOrNone(objectNone), |
| ); |
| } |
| |
| test_question_question() { |
| void check(DartType T1, DartType T2, DartType expected) { |
| _assertNullabilityQuestion(T1); |
| _assertNullabilityQuestion(T2); |
| |
| _assertNotSpecial(T1); |
| _assertNotSpecial(T2); |
| |
| _checkGreatestLowerBound(T1, T2, expected); |
| } |
| |
| check(intQuestion, intQuestion, intQuestion); |
| |
| check(numQuestion, intQuestion, intQuestion); |
| check(intQuestion, numQuestion, intQuestion); |
| |
| check(doubleQuestion, intQuestion, neverQuestion); |
| check(intQuestion, doubleQuestion, neverQuestion); |
| } |
| |
| test_self() { |
| var T = typeParameter('T'); |
| |
| List<DartType> types = [ |
| dynamicType, |
| voidNone, |
| neverNone, |
| typeParameterTypeStar(T), |
| intNone, |
| functionTypeNone(returnType: voidNone), |
| ]; |
| |
| for (var type in types) { |
| _checkGreatestLowerBound(type, type, type); |
| } |
| } |
| |
| test_star_question() { |
| void check(DartType T1, DartType T2, DartType expected) { |
| _assertNullabilityQuestion(T1); |
| _assertNullabilityStar(T2); |
| |
| _assertNotSpecial(T1); |
| _assertNotSpecial(T2); |
| |
| _checkGreatestLowerBound(T1, T2, expected); |
| } |
| |
| check(intQuestion, intStar, intStar); |
| |
| check(numQuestion, intStar, intStar); |
| check(intQuestion, numStar, intStar); |
| |
| check(doubleQuestion, intStar, neverStar); |
| check(intQuestion, doubleStar, neverStar); |
| } |
| |
| test_star_star() { |
| void check(DartType T1, DartType T2, DartType expected) { |
| _assertNullabilityStar(T1); |
| _assertNullabilityStar(T2); |
| |
| _assertNotSpecial(T1); |
| _assertNotSpecial(T2); |
| |
| _checkGreatestLowerBound(T1, T2, expected); |
| } |
| |
| check(intStar, numStar, intStar); |
| check(intStar, doubleStar, neverStar); |
| } |
| |
| test_top_any() { |
| void check(DartType T1, DartType T2) { |
| expect(typeSystem.isTop(T1), isTrue, reason: _typeString(T1)); |
| expect(typeSystem.isTop(T2), isFalse, reason: _typeString(T2)); |
| _checkGreatestLowerBound(T1, T2, T2); |
| } |
| |
| check(voidNone, objectNone); |
| check(voidNone, intNone); |
| check(voidNone, intQuestion); |
| check(voidNone, intStar); |
| check(voidNone, listNone(intNone)); |
| check(voidNone, futureOrNone(intNone)); |
| check(voidNone, neverNone); |
| check(voidNone, functionTypeNone(returnType: voidNone)); |
| |
| check(dynamicNone, objectNone); |
| check(dynamicNone, intNone); |
| check(dynamicNone, intQuestion); |
| check(dynamicNone, intStar); |
| check(dynamicNone, listNone(intNone)); |
| check(dynamicNone, futureOrNone(intNone)); |
| check(dynamicNone, neverNone); |
| check(dynamicNone, functionTypeNone(returnType: voidNone)); |
| |
| check(objectQuestion, objectNone); |
| check(objectQuestion, intNone); |
| check(objectQuestion, intQuestion); |
| check(objectQuestion, intStar); |
| check(objectQuestion, listNone(intNone)); |
| check(objectQuestion, futureOrNone(intNone)); |
| check(objectQuestion, neverNone); |
| check(objectQuestion, functionTypeNone(returnType: voidNone)); |
| |
| check(objectStar, objectNone); |
| check(objectStar, intNone); |
| check(objectStar, intQuestion); |
| check(objectStar, intStar); |
| check(objectStar, listNone(intNone)); |
| check(objectStar, futureOrNone(intNone)); |
| check(objectStar, neverNone); |
| check(objectStar, functionTypeNone(returnType: voidNone)); |
| |
| check(futureOrNone(voidNone), intNone); |
| check(futureOrQuestion(voidNone), intNone); |
| check(futureOrStar(voidNone), intNone); |
| } |
| |
| test_top_top() { |
| void check(DartType T1, DartType T2) { |
| expect(typeSystem.isTop(T1), isTrue, reason: _typeString(T1)); |
| expect(typeSystem.isTop(T2), isTrue, reason: _typeString(T2)); |
| _checkGreatestLowerBound(T1, T2, T2); |
| } |
| |
| check(voidNone, dynamicNone); |
| check(voidNone, objectStar); |
| check(voidNone, objectQuestion); |
| check(voidNone, futureOrNone(voidNone)); |
| check(voidNone, futureOrNone(dynamicNone)); |
| check(voidNone, futureOrNone(objectQuestion)); |
| check(voidNone, futureOrNone(objectStar)); |
| |
| check(dynamicNone, objectStar); |
| check(dynamicNone, objectQuestion); |
| check(dynamicNone, futureOrNone(voidNone)); |
| check(dynamicNone, futureOrNone(dynamicNone)); |
| check(dynamicNone, futureOrNone(objectQuestion)); |
| check(dynamicNone, futureOrNone(objectStar)); |
| check( |
| dynamicNone, |
| futureOrStar(objectStar), |
| ); |
| |
| check(objectQuestion, futureOrQuestion(voidNone)); |
| check(objectQuestion, futureOrQuestion(dynamicNone)); |
| check(objectQuestion, futureOrQuestion(objectNone)); |
| check(objectQuestion, futureOrQuestion(objectQuestion)); |
| check(objectQuestion, futureOrQuestion(objectStar)); |
| |
| check(objectQuestion, futureOrStar(voidNone)); |
| check(objectQuestion, futureOrStar(dynamicNone)); |
| check(objectQuestion, futureOrStar(objectNone)); |
| check(objectQuestion, futureOrStar(objectQuestion)); |
| check(objectQuestion, futureOrStar(objectStar)); |
| |
| check(objectStar, futureOrStar(voidNone)); |
| check(objectStar, futureOrStar(dynamicNone)); |
| check(objectStar, futureOrStar(objectNone)); |
| check(objectStar, futureOrStar(objectQuestion)); |
| check(objectStar, futureOrStar(objectStar)); |
| |
| check(futureOrNone(voidNone), objectQuestion); |
| check(futureOrNone(dynamicNone), objectQuestion); |
| check(futureOrNone(objectQuestion), objectQuestion); |
| check(futureOrNone(objectStar), objectQuestion); |
| |
| check(futureOrNone(voidNone), futureOrNone(dynamicNone)); |
| check(futureOrNone(voidNone), futureOrNone(objectQuestion)); |
| check(futureOrNone(voidNone), futureOrNone(objectStar)); |
| check(futureOrNone(dynamicNone), futureOrNone(objectQuestion)); |
| check(futureOrNone(dynamicNone), futureOrNone(objectStar)); |
| } |
| |
| test_typeParameter() { |
| void check({DartType bound, DartType T2}) { |
| var T1 = typeParameterTypeNone( |
| typeParameter('T', bound: bound), |
| ); |
| _checkGreatestLowerBound(T1, T2, neverNone); |
| } |
| |
| check( |
| bound: null, |
| T2: functionTypeNone(returnType: voidNone), |
| ); |
| check(bound: null, T2: intNone); |
| check(bound: numNone, T2: intNone); |
| } |
| |
| void _checkGreatestLowerBound(DartType T1, DartType T2, DartType expected, |
| {bool checkSubtype = true}) { |
| var expectedStr = _typeString(expected); |
| |
| var result = typeSystem.getGreatestLowerBound(T1, T2); |
| var resultStr = _typeString(result); |
| expect(result, expected, reason: ''' |
| expected: $expectedStr |
| actual: $resultStr |
| '''); |
| |
| // Check that the result is a lower bound. |
| if (checkSubtype) { |
| expect(typeSystem.isSubtypeOf2(result, T1), true); |
| expect(typeSystem.isSubtypeOf2(result, T2), true); |
| } |
| |
| // Check for symmetry. |
| result = typeSystem.getGreatestLowerBound(T2, T1); |
| resultStr = _typeString(result); |
| expect(result, expected, reason: ''' |
| expected: $expectedStr |
| actual: $resultStr |
| '''); |
| } |
| } |
| |
| @reflectiveTest |
| class UpperBoundTest extends _BoundsTestBase { |
| test_bottom_any() { |
| void check(DartType T1, DartType T2) { |
| expect(typeSystem.isBottom(T1), isTrue, reason: _typeString(T1)); |
| expect(typeSystem.isBottom(T2), isFalse, reason: _typeString(T2)); |
| _checkLeastUpperBound(T1, T2, T2); |
| } |
| |
| check(neverNone, objectNone); |
| check(neverNone, objectStar); |
| check(neverNone, objectQuestion); |
| |
| check(neverNone, intNone); |
| check(neverNone, intQuestion); |
| check(neverNone, intStar); |
| |
| check(neverNone, listNone(intNone)); |
| check(neverNone, listQuestion(intNone)); |
| check(neverNone, listStar(intNone)); |
| |
| check(neverNone, futureOrNone(intNone)); |
| check(neverNone, futureOrQuestion(intNone)); |
| check(neverNone, futureOrStar(intNone)); |
| |
| { |
| var T = typeParameterTypeNone( |
| typeParameter('T', bound: neverNone), |
| ); |
| check(T, intNone); |
| check(T, intQuestion); |
| check(T, intStar); |
| } |
| |
| { |
| var T = promotedTypeParameterTypeNone( |
| typeParameter('T', bound: objectQuestion), |
| neverNone, |
| ); |
| check(T, intNone); |
| check(T, intQuestion); |
| check(T, intStar); |
| } |
| } |
| |
| test_bottom_bottom() { |
| void check(DartType T1, DartType T2) { |
| expect(typeSystem.isBottom(T1), isTrue, reason: _typeString(T1)); |
| expect(typeSystem.isBottom(T2), isTrue, reason: _typeString(T2)); |
| _checkLeastUpperBound(T1, T2, T2); |
| } |
| |
| check( |
| neverNone, |
| typeParameterTypeNone( |
| typeParameter('T', bound: neverNone), |
| ), |
| ); |
| |
| check( |
| neverNone, |
| promotedTypeParameterTypeNone( |
| typeParameter('T', bound: objectQuestion), |
| neverNone, |
| ), |
| ); |
| } |
| |
| test_functionType2_parameters_optionalNamed() { |
| FunctionType build(Map<String, DartType> namedTypes) { |
| return functionTypeNone( |
| returnType: voidNone, |
| parameters: namedTypes.entries.map((entry) { |
| return namedParameter(name: entry.key, type: entry.value); |
| }).toList(), |
| ); |
| } |
| |
| void check(Map<String, DartType> T1_named, Map<String, DartType> T2_named, |
| Map<String, DartType> expected_named) { |
| var T1 = build(T1_named); |
| var T2 = build(T2_named); |
| var expected = build(expected_named); |
| _checkLeastUpperBound(T1, T2, expected); |
| } |
| |
| check({'a': intNone}, {}, {}); |
| check({'a': intNone}, {'b': intNone}, {}); |
| |
| check({'a': intNone}, {'a': intNone}, {'a': intNone}); |
| check({'a': intNone}, {'a': intQuestion}, {'a': intNone}); |
| |
| check({'a': intNone, 'b': doubleNone}, {'a': intNone}, {'a': intNone}); |
| } |
| |
| test_functionType2_parameters_optionalPositional() { |
| FunctionType build(List<DartType> positionalTypes) { |
| return functionTypeNone( |
| returnType: voidNone, |
| parameters: positionalTypes.map((type) { |
| return positionalParameter(type: type); |
| }).toList(), |
| ); |
| } |
| |
| void check(List<DartType> T1_positional, List<DartType> T2_positional, |
| DartType expected) { |
| var T1 = build(T1_positional); |
| var T2 = build(T2_positional); |
| _checkLeastUpperBound(T1, T2, expected); |
| } |
| |
| check([intNone], [], build([])); |
| check([intNone, doubleNone], [intNone], build([intNone])); |
| |
| check([intNone], [intNone], build([intNone])); |
| check([intNone], [intQuestion], build([intNone])); |
| |
| check([intNone], [intStar], build([intNone])); |
| check([intNone], [doubleNone], build([neverNone])); |
| |
| check([intNone], [numNone], build([intNone])); |
| |
| check( |
| [doubleNone, numNone], |
| [numNone, intNone], |
| build([doubleNone, intNone]), |
| ); |
| } |
| |
| test_functionType2_parameters_requiredNamed() { |
| _checkLeastUpperBound( |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| requiredParameter(name: 'a', type: intNone), |
| ], |
| ), |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| namedRequiredParameter(name: 'a', type: intNone), |
| ], |
| ), |
| functionNone, |
| ); |
| |
| _checkLeastUpperBound( |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| positionalParameter(name: 'a', type: intNone), |
| ], |
| ), |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| namedRequiredParameter(name: 'a', type: intNone), |
| ], |
| ), |
| functionNone, |
| ); |
| |
| _checkLeastUpperBound( |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| namedParameter(name: 'b', type: intNone), |
| ], |
| ), |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| namedRequiredParameter(name: 'a', type: intNone), |
| ], |
| ), |
| functionNone, |
| ); |
| |
| _checkLeastUpperBound( |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| namedParameter(name: 'a', type: intNone), |
| ], |
| ), |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| namedRequiredParameter(name: 'a', type: intNone), |
| ], |
| ), |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| namedRequiredParameter(name: 'a', type: intNone), |
| ], |
| ), |
| ); |
| |
| _checkLeastUpperBound( |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| namedParameter(name: 'a', type: intNone), |
| namedRequiredParameter(name: 'b', type: intNone), |
| ], |
| ), |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| namedRequiredParameter(name: 'b', type: intNone), |
| ], |
| ), |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| namedRequiredParameter(name: 'b', type: intNone), |
| ], |
| ), |
| ); |
| |
| _checkLeastUpperBound( |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| namedRequiredParameter(name: 'a', type: intNone), |
| ], |
| ), |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| namedRequiredParameter(name: 'a', type: numNone), |
| ], |
| ), |
| functionTypeNone( |
| returnType: voidNone, |
| parameters: [ |
| namedRequiredParameter(name: 'a', type: intNone), |
| ], |
| ), |
| ); |
| } |
| |
| test_functionType2_parameters_requiredPositional() { |
| FunctionType build(List<DartType> requiredTypes) { |
| return functionTypeNone( |
| returnType: voidNone, |
| parameters: requiredTypes.map((type) { |
| return requiredParameter(type: type); |
| }).toList(), |
| ); |
| } |
| |
| void check(List<DartType> T1_required, List<DartType> T2_required, |
| DartType expected) { |
| var T1 = build(T1_required); |
| var T2 = build(T2_required); |
| _checkLeastUpperBound(T1, T2, expected); |
| } |
| |
| check([intNone], [], functionNone); |
| |
| check([intNone], [intNone], build([intNone])); |
| check([intNone], [intQuestion], build([intNone])); |
| |
| check([intNone], [intStar], build([intNone])); |
| check([intNone], [doubleNone], build([neverNone])); |
| |
| check([intNone], [numNone], build([intNone])); |
| |
| check( |
| [doubleNone, numNone], |
| [numNone, intNone], |
| build([doubleNone, intNone]), |
| ); |
| } |
| |
| test_functionType2_returnType() { |
| void check(DartType T1_ret, DartType T2_ret, DartType expected_ret) { |
| _checkLeastUpperBound( |
| functionTypeNone(returnType: T1_ret), |
| functionTypeNone(returnType: T2_ret), |
| functionTypeNone(returnType: expected_ret), |
| ); |
| } |
| |
| check(intNone, intNone, intNone); |
| check(intNone, intQuestion, intQuestion); |
| check(intNone, intStar, intStar); |
| |
| check(intNone, numNone, numNone); |
| check(intQuestion, numNone, numQuestion); |
| check(intStar, numNone, numStar); |
| |
| check(intNone, dynamicNone, dynamicNone); |
| check(intNone, neverNone, intNone); |
| } |
| |
| test_functionType2_typeParameters() { |
| void check(FunctionType T1, FunctionType T2, DartType expected) { |
| _assertNullabilityNone(T1); |
| _assertNullabilityNone(T2); |
| |
| _checkLeastUpperBound(T1, T2, expected); |
| } |
| |
| check( |
| functionTypeNone( |
| returnType: voidNone, |
| typeFormals: [ |
| typeParameter('T'), |
| ], |
| ), |
| functionTypeNone(returnType: voidNone), |
| functionNone, |
| ); |
| |
| check( |
| functionTypeNone( |
| returnType: voidNone, |
| typeFormals: [ |
| typeParameter('T', bound: intNone), |
| ], |
| ), |
| functionTypeNone( |
| returnType: voidNone, |
| typeFormals: [ |
| typeParameter('T', bound: numNone), |
| ], |
| ), |
| functionNone, |
| ); |
| |
| { |
| var T = typeParameter('T', bound: numNone); |
| var U = typeParameter('U', bound: numNone); |
| var R = typeParameter('R', bound: numNone); |
| check( |
| functionTypeNone( |
| returnType: typeParameterTypeNone(T), |
| typeFormals: [T], |
| ), |
| functionTypeNone( |
| returnType: typeParameterTypeNone(U), |
| typeFormals: [U], |
| ), |
| functionTypeNone( |
| returnType: typeParameterTypeNone(R), |
| typeFormals: [R], |
| ), |
| ); |
| } |
| } |
| |
| test_functionType_interfaceType() { |
| void check(FunctionType T1, InterfaceType T2, InterfaceType expected) { |
| _checkLeastUpperBound(T1, T2, expected); |
| } |
| |
| check( |
| functionTypeNone(returnType: voidNone), |
| intNone, |
| objectNone, |
| ); |
| } |
| |
| test_functionType_interfaceType_Function() { |
| void check(FunctionType T1, InterfaceType T2, InterfaceType expected) { |
| _checkLeastUpperBound(T1, T2, expected); |
| } |
| |
| void checkNone(FunctionType T1) { |
| _assertNullabilityNone(T1); |
| check(T1, functionNone, functionNone); |
| } |
| |
| checkNone(functionTypeNone(returnType: voidNone)); |
| |
| checkNone( |
| functionTypeNone( |
| returnType: intNone, |
| parameters: [ |
| requiredParameter(type: numQuestion), |
| ], |
| ), |
| ); |
| |
| check( |
| functionTypeQuestion(returnType: voidNone), |
| functionNone, |
| functionQuestion, |
| ); |
| } |
| |
| test_identical() { |
| void check(DartType type) { |
| _checkLeastUpperBound(type, type, type); |
| } |
| |
| check(intNone); |
| check(intQuestion); |
| check(intStar); |
| check(listNone(intNone)); |
| } |
| |
| test_none_question() { |
| void check(DartType T1, DartType T2, DartType expected) { |
| _assertNullabilityNone(T1); |
| _assertNullabilityQuestion(T2); |
| |
| _assertNotSpecial(T1); |
| _assertNotSpecial(T2); |
| |
| _checkLeastUpperBound(T1, T2, expected); |
| } |
| |
| check(doubleNone, intQuestion, numQuestion); |
| check(numNone, doubleQuestion, numQuestion); |
| check(numNone, intQuestion, numQuestion); |
| } |
| |
| test_none_star() { |
| void check(DartType T1, DartType T2, DartType expected) { |
| _assertNullabilityNone(T1); |
| _assertNullabilityStar(T2); |
| |
| _assertNotSpecial(T1); |
| _assertNotSpecial(T2); |
| |
| _checkLeastUpperBound(T1, T2, expected); |
| } |
| |
| check(doubleNone, intStar, numStar); |
| check(numNone, doubleStar, numStar); |
| check(numNone, intStar, numStar); |
| } |
| |
| test_null_any() { |
| void check(DartType T1, DartType T2, DartType expected) { |
| var T1_str = _typeString(T1); |
| var T2_str = _typeString(T2); |
| |
| expect(typeSystem.isNull(T1), isTrue, reason: 'isNull: $T1_str'); |
| expect(typeSystem.isNull(T2), isFalse, reason: 'isNull: $T2_str'); |
| |
| expect(typeSystem.isTop(T1), isFalse, reason: 'isTop: $T1_str'); |
| expect(typeSystem.isTop(T2), isFalse, reason: 'isTop: $T2_str'); |
| |
| expect(typeSystem.isBottom(T1), isFalse, reason: 'isBottom: $T1_str'); |
| expect(typeSystem.isBottom(T2), isFalse, reason: 'isBottom: $T2_str'); |
| |
| _checkLeastUpperBound(T1, T2, expected); |
| } |
| |
| check(nullNone, objectNone, objectQuestion); |
| |
| check(nullNone, intNone, intQuestion); |
| check(nullNone, intQuestion, intQuestion); |
| check(nullNone, intStar, intStar); |
| |
| check(nullQuestion, intNone, intQuestion); |
| check(nullQuestion, intQuestion, intQuestion); |
| check(nullQuestion, intStar, intStar); |
| |
| check(nullStar, intNone, intStar); |
| check(nullStar, intQuestion, intQuestion); |
| check(nullStar, intStar, intStar); |
| |
| check(nullNone, listNone(intNone), listQuestion(intNone)); |
| check(nullNone, listQuestion(intNone), listQuestion(intNone)); |
| check(nullNone, listStar(intNone), listStar(intNone)); |
| |
| check(nullNone, futureOrNone(intNone), futureOrQuestion(intNone)); |
| check(nullNone, futureOrQuestion(intNone), futureOrQuestion(intNone)); |
| check(nullNone, futureOrStar(intNone), futureOrStar(intNone)); |
| |
| check(nullNone, futureOrNone(intQuestion), futureOrNone(intQuestion)); |
| check(nullNone, futureOrStar(intQuestion), futureOrStar(intQuestion)); |
| |
| check( |
| nullNone, |
| functionTypeNone(returnType: intNone), |
| functionTypeQuestion(returnType: intNone), |
| ); |
| } |
| |
| test_null_null() { |
| void check(DartType T1, DartType T2) { |
| var T1_str = _typeString(T1); |
| var T2_str = _typeString(T2); |
| |
| expect(typeSystem.isNull(T1), isTrue, reason: 'isNull: $T1_str'); |
| expect(typeSystem.isNull(T2), isTrue, reason: 'isNull: $T2_str'); |
| |
| expect(typeSystem.isBottom(T1), isFalse, reason: 'isBottom: $T1_str'); |
| expect(typeSystem.isBottom(T2), isFalse, reason: 'isBottom: $T2_str'); |
| |
| _checkLeastUpperBound(T1, T2, T2); |
| } |
| |
| check(nullNone, nullQuestion); |
| check(nullNone, nullStar); |
| } |
| |
| test_object_any() { |
| void check(DartType T1, DartType T2, DartType expected) { |
| var T1_str = _typeString(T1); |
| var T2_str = _typeString(T2); |
| |
| expect(typeSystem.isObject(T1), isTrue, reason: 'isObject: $T1_str'); |
| expect(typeSystem.isObject(T2), isFalse, reason: 'isObject: $T2_str'); |
| |
| _checkLeastUpperBound(T1, T2, expected); |
| } |
| |
| check(objectNone, intNone, objectNone); |
| check(objectNone, intQuestion, objectQuestion); |
| check(objectNone, intStar, objectNone); |
| |
| check(objectNone, futureOrNone(intQuestion), objectQuestion); |
| |
| check(futureOrNone(objectNone), intNone, futureOrNone(objectNone)); |
| check(futureOrNone(objectNone), intQuestion, futureOrQuestion(objectNone)); |
| check(futureOrNone(objectNone), intStar, futureOrNone(objectNone)); |
| } |
| |
| test_object_object() { |
| void check(DartType T1, DartType T2) { |
| var T1_str = _typeString(T1); |
| var T2_str = _typeString(T2); |
| |
| expect(typeSystem.isObject(T1), isTrue, reason: 'isObject: $T1_str'); |
| expect(typeSystem.isObject(T2), isTrue, reason: 'isObject: $T2_str'); |
| |
| _checkLeastUpperBound(T1, T2, T2); |
| } |
| |
| check(futureOrNone(objectNone), objectNone); |
| |
| check( |
| futureOrNone( |
| futureOrNone(objectNone), |
| ), |
| futureOrNone(objectNone), |
| ); |
| } |
| |
| test_question_question() { |
| void check(DartType T1, DartType T2, DartType expected) { |
| _assertNullabilityQuestion(T1); |
| _assertNullabilityQuestion(T2); |
| |
| _assertNotSpecial(T1); |
| _assertNotSpecial(T2); |
| |
| _checkLeastUpperBound(T1, T2, expected); |
| } |
| |
| check(doubleQuestion, intQuestion, numQuestion); |
| check(numQuestion, doubleQuestion, numQuestion); |
| check(numQuestion, intQuestion, numQuestion); |
| } |
| |
| test_question_star() { |
| void check(DartType T1, DartType T2, DartType expected) { |
| _assertNullabilityQuestion(T1); |
| _assertNullabilityStar(T2); |
| |
| _assertNotSpecial(T1); |
| _assertNotSpecial(T2); |
| |
| _checkLeastUpperBound(T1, T2, expected); |
| } |
| |
| check(doubleQuestion, intStar, numQuestion); |
| check(numQuestion, doubleStar, numQuestion); |
| check(numQuestion, intStar, numQuestion); |
| } |
| |
| test_star_star() { |
| void check(DartType T1, DartType T2, DartType expected) { |
| _assertNullabilityStar(T1); |
| _assertNullabilityStar(T2); |
| |
| _assertNotSpecial(T1); |
| _assertNotSpecial(T2); |
| |
| _checkLeastUpperBound(T1, T2, expected); |
| } |
| |
| check(doubleStar, intStar, numStar); |
| check(numStar, doubleStar, numStar); |
| check(numStar, intStar, numStar); |
| } |
| |
| test_top_any() { |
| void check(DartType T1, DartType T2) { |
| expect(typeSystem.isTop(T1), isTrue, reason: _typeString(T1)); |
| expect(typeSystem.isTop(T2), isFalse, reason: _typeString(T2)); |
| _checkLeastUpperBound(T1, T2, T1); |
| } |
| |
| check(voidNone, objectNone); |
| check(voidNone, intNone); |
| check(voidNone, intQuestion); |
| check(voidNone, intStar); |
| check(voidNone, listNone(intNone)); |
| check(voidNone, futureOrNone(intNone)); |
| |
| check(dynamicNone, objectNone); |
| check(dynamicNone, intNone); |
| check(dynamicNone, intQuestion); |
| check(dynamicNone, intStar); |
| check(dynamicNone, listNone(intNone)); |
| check(dynamicNone, futureOrNone(intNone)); |
| |
| check(objectQuestion, objectNone); |
| check(objectQuestion, intNone); |
| check(objectQuestion, intQuestion); |
| check(objectQuestion, intStar); |
| check(objectQuestion, listNone(intNone)); |
| check(objectQuestion, futureOrNone(intNone)); |
| |
| check(objectStar, objectNone); |
| check(objectStar, intNone); |
| check(objectStar, intQuestion); |
| check(objectStar, intStar); |
| check(objectStar, listNone(intNone)); |
| check(objectStar, futureOrNone(intNone)); |
| |
| check(futureOrNone(voidNone), intNone); |
| check(futureOrQuestion(voidNone), intNone); |
| check(futureOrStar(voidNone), intNone); |
| } |
| |
| test_top_top() { |
| void check(DartType T1, DartType T2) { |
| expect(typeSystem.isTop(T1), isTrue, reason: _typeString(T1)); |
| expect(typeSystem.isTop(T2), isTrue, reason: _typeString(T2)); |
| _checkLeastUpperBound(T1, T2, T1); |
| } |
| |
| check(voidNone, dynamicNone); |
| check(voidNone, objectStar); |
| check(voidNone, objectQuestion); |
| check(voidNone, futureOrNone(voidNone)); |
| check(voidNone, futureOrNone(dynamicNone)); |
| check(voidNone, futureOrNone(objectQuestion)); |
| check(voidNone, futureOrNone(objectStar)); |
| |
| check(dynamicNone, objectStar); |
| check(dynamicNone, objectQuestion); |
| check(dynamicNone, futureOrNone(voidNone)); |
| check(dynamicNone, futureOrNone(dynamicNone)); |
| check(dynamicNone, futureOrNone(objectQuestion)); |
| check(dynamicNone, futureOrNone(objectStar)); |
| check( |
| dynamicNone, |
| futureOrStar(objectStar), |
| ); |
| |
| check(objectQuestion, futureOrQuestion(voidNone)); |
| check(objectQuestion, futureOrQuestion(dynamicNone)); |
| check(objectQuestion, futureOrQuestion(objectNone)); |
| check(objectQuestion, futureOrQuestion(objectQuestion)); |
| check(objectQuestion, futureOrQuestion(objectStar)); |
| |
| check(objectQuestion, futureOrStar(voidNone)); |
| check(objectQuestion, futureOrStar(dynamicNone)); |
| check(objectQuestion, futureOrStar(objectNone)); |
| check(objectQuestion, futureOrStar(objectQuestion)); |
| check(objectQuestion, futureOrStar(objectStar)); |
| |
| check(objectStar, futureOrStar(voidNone)); |
| check(objectStar, futureOrStar(dynamicNone)); |
| check(objectStar, futureOrStar(objectNone)); |
| check(objectStar, futureOrStar(objectQuestion)); |
| check(objectStar, futureOrStar(objectStar)); |
| |
| check(futureOrNone(voidNone), objectQuestion); |
| check(futureOrNone(dynamicNone), objectQuestion); |
| check(futureOrNone(objectQuestion), objectQuestion); |
| check(futureOrNone(objectStar), objectQuestion); |
| |
| check(futureOrNone(voidNone), futureOrNone(dynamicNone)); |
| check(futureOrNone(voidNone), futureOrNone(objectQuestion)); |
| check(futureOrNone(voidNone), futureOrNone(objectStar)); |
| check(futureOrNone(dynamicNone), futureOrNone(objectQuestion)); |
| check(futureOrNone(dynamicNone), futureOrNone(objectStar)); |
| } |
| |
| test_typeParameter_bound() { |
| void check(TypeParameterType T1, DartType T2, DartType expected) { |
| _assertNullabilityNone(T1); |
| _assertNullabilityNone(T2); |
| |
| _assertNotSpecial(T1); |
| _assertNotSpecial(T2); |
| |
| _checkLeastUpperBound(T1, T2, expected); |
| } |
| |
| { |
| var T = typeParameter('T', bound: intNone); |
| check(typeParameterTypeNone(T), numNone, numNone); |
| } |
| |
| { |
| var T = typeParameter('T', bound: intNone); |
| var U = typeParameter('U', bound: numNone); |
| check(typeParameterTypeNone(T), typeParameterTypeNone(U), numNone); |
| } |
| |
| { |
| var T = typeParameter('T', bound: intNone); |
| var U = typeParameter('U', bound: numQuestion); |
| check(typeParameterTypeNone(T), typeParameterTypeNone(U), numQuestion); |
| } |
| |
| { |
| var T = typeParameter('T', bound: intQuestion); |
| var U = typeParameter('U', bound: numNone); |
| check(typeParameterTypeNone(T), typeParameterTypeNone(U), numQuestion); |
| } |
| |
| { |
| var T = typeParameter('T', bound: numNone); |
| var T_none = typeParameterTypeNone(T); |
| var U = typeParameter('U', bound: T_none); |
| check(T_none, typeParameterTypeNone(U), T_none); |
| } |
| } |
| |
| void _checkLeastUpperBound(DartType T1, DartType T2, DartType expected) { |
| var expectedStr = _typeString(expected); |
| |
| var result = typeSystem.getLeastUpperBound(T1, T2); |
| var resultStr = _typeString(result); |
| expect(result, expected, reason: ''' |
| expected: $expectedStr |
| actual: $resultStr |
| '''); |
| |
| // Check that the result is an upper bound. |
| expect(typeSystem.isSubtypeOf2(T1, result), true); |
| expect(typeSystem.isSubtypeOf2(T2, result), true); |
| |
| // Check for symmetry. |
| result = typeSystem.getLeastUpperBound(T2, T1); |
| resultStr = _typeString(result); |
| expect(result, expected, reason: ''' |
| expected: $expectedStr |
| actual: $resultStr |
| '''); |
| } |
| } |
| |
| @reflectiveTest |
| class _BoundsTestBase extends AbstractTypeSystemNullSafetyTest { |
| void _assertNotBottom(DartType type) { |
| if (typeSystem.isBottom(type)) { |
| fail('isBottom must be false: ' + _typeString(type)); |
| } |
| } |
| |
| void _assertNotNull(DartType type) { |
| if (typeSystem.isNull(type)) { |
| fail('isNull must be false: ' + _typeString(type)); |
| } |
| } |
| |
| void _assertNotObject(DartType type) { |
| if (typeSystem.isObject(type)) { |
| fail('isObject must be false: ' + _typeString(type)); |
| } |
| } |
| |
| void _assertNotSpecial(DartType type) { |
| _assertNotBottom(type); |
| _assertNotNull(type); |
| _assertNotObject(type); |
| _assertNotTop(type); |
| } |
| |
| void _assertNotTop(DartType type) { |
| if (typeSystem.isTop(type)) { |
| fail('isTop must be false: ' + _typeString(type)); |
| } |
| } |
| |
| void _assertNullability(DartType type, NullabilitySuffix expected) { |
| if (type.nullabilitySuffix != expected) { |
| fail('Expected $expected in ' + _typeString(type)); |
| } |
| } |
| |
| void _assertNullabilityNone(DartType type) { |
| _assertNullability(type, NullabilitySuffix.none); |
| } |
| |
| void _assertNullabilityQuestion(DartType type) { |
| _assertNullability(type, NullabilitySuffix.question); |
| } |
| |
| void _assertNullabilityStar(DartType type) { |
| _assertNullability(type, NullabilitySuffix.star); |
| } |
| |
| String _typeParametersStr(TypeImpl type) { |
| var typeStr = ''; |
| |
| var typeParameterCollector = _TypeParameterCollector(); |
| DartTypeVisitor.visit(type, typeParameterCollector); |
| for (var typeParameter in typeParameterCollector.typeParameters) { |
| typeStr += ', $typeParameter'; |
| } |
| return typeStr; |
| } |
| |
| String _typeString(TypeImpl type) { |
| if (type == null) return null; |
| return type.getDisplayString(withNullability: true) + |
| _typeParametersStr(type); |
| } |
| } |
| |
| class _TypeParameterCollector extends DartTypeVisitor<void> { |
| final Set<String> typeParameters = {}; |
| |
| /// We don't need to print bounds for these type parameters, because |
| /// they are already included into the function type itself, and cannot |
| /// be promoted. |
| final Set<TypeParameterElement> functionTypeParameters = {}; |
| |
| @override |
| void defaultDartType(DartType type) { |
| throw UnimplementedError('(${type.runtimeType}) $type'); |
| } |
| |
| @override |
| void visitDynamicType(DynamicTypeImpl type) {} |
| |
| @override |
| void visitFunctionType(FunctionType type) { |
| functionTypeParameters.addAll(type.typeFormals); |
| for (var typeParameter in type.typeFormals) { |
| var bound = typeParameter.bound; |
| if (bound != null) { |
| DartTypeVisitor.visit(bound, this); |
| } |
| } |
| for (var parameter in type.parameters) { |
| DartTypeVisitor.visit(parameter.type, this); |
| } |
| DartTypeVisitor.visit(type.returnType, this); |
| } |
| |
| @override |
| void visitInterfaceType(InterfaceType type) { |
| for (var typeArgument in type.typeArguments) { |
| DartTypeVisitor.visit(typeArgument, this); |
| } |
| } |
| |
| @override |
| void visitNeverType(NeverTypeImpl type) {} |
| |
| @override |
| void visitTypeParameterType(TypeParameterType type) { |
| if (!functionTypeParameters.contains(type.element)) { |
| var bound = type.element.bound; |
| var promotedBound = (type as TypeParameterTypeImpl).promotedBound; |
| |
| if (bound == null && promotedBound == null) { |
| return; |
| } |
| |
| var str = ''; |
| |
| if (bound != null) { |
| var boundStr = bound.getDisplayString(withNullability: true); |
| str += '${type.element.name} extends ' + boundStr; |
| } |
| |
| if (promotedBound != null) { |
| var promotedBoundStr = promotedBound.getDisplayString( |
| withNullability: true, |
| ); |
| if (str.isNotEmpty) { |
| str += ', '; |
| } |
| str += '${type.element.name} & ' + promotedBoundStr; |
| } |
| |
| typeParameters.add(str); |
| } |
| } |
| |
| @override |
| void visitUnknownInferredType(UnknownInferredType type) {} |
| |
| @override |
| void visitVoidType(VoidType type) {} |
| } |
