Konstantin Shcheglov
54b2948461
Change-Id: I16922aef63d294448436c93004386ee8a3439e31 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/190724 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
4221 lines
135 KiB
Dart
4221 lines
135 KiB
Dart
// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'package:analyzer/dart/ast/ast.dart';
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import 'package:analyzer/dart/element/element.dart';
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import 'package:analyzer/dart/element/nullability_suffix.dart';
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import 'package:analyzer/dart/element/type.dart';
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import 'package:analyzer/src/dart/ast/extensions.dart';
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import 'package:analyzer/src/dart/element/element.dart';
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import 'package:analyzer/src/error/codes.dart';
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import 'package:test/test.dart';
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import 'package:test_reflective_loader/test_reflective_loader.dart';
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import '../src/dart/resolution/context_collection_resolution.dart';
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import '../utils.dart';
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import 'resolver_test_case.dart';
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import 'test_support.dart';
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main() {
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defineReflectiveSuite(() {
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defineReflectiveTests(StrongModeLocalInferenceTest);
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defineReflectiveTests(StrongModeStaticTypeAnalyzer2Test);
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defineReflectiveTests(StrongModeTypePropagationTest);
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});
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}
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/// Strong mode static analyzer local type inference tests
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@reflectiveTest
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class StrongModeLocalInferenceTest extends PubPackageResolutionTest
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with WithoutNullSafetyMixin {
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// TODO(https://github.com/dart-lang/sdk/issues/44666): Use null safety in
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// test cases.
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TypeAssertions? _assertions;
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late final Asserter<DartType> _isDynamic;
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late final Asserter<InterfaceType> _isFutureOfDynamic;
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late final Asserter<InterfaceType> _isFutureOfInt;
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late final Asserter<InterfaceType> _isFutureOfNull;
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late final Asserter<InterfaceType> _isFutureOrOfInt;
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late final Asserter<DartType> _isInt;
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late final Asserter<DartType> _isNull;
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late final Asserter<DartType> _isNum;
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late final Asserter<DartType> _isObject;
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late final Asserter<DartType> _isString;
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late final AsserterBuilder2<Asserter<DartType>, Asserter<DartType>, DartType>
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_isFunction2Of;
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late final AsserterBuilder<List<Asserter<DartType>>, InterfaceType>
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_isFutureOf;
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late final AsserterBuilder<List<Asserter<DartType>>, InterfaceType>
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_isFutureOrOf;
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late final AsserterBuilderBuilder<Asserter<DartType>,
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List<Asserter<DartType>>, DartType> _isInstantiationOf;
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late final AsserterBuilder<Asserter<DartType>, InterfaceType> _isListOf;
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late final AsserterBuilder2<Asserter<DartType>, Asserter<DartType>,
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InterfaceType> _isMapOf;
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late final AsserterBuilder<DartType, DartType> _isType;
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late final AsserterBuilder<Element, DartType> _hasElement;
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CompilationUnit get unit => result.unit!;
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@override
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Future<void> resolveTestFile() async {
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var result = await super.resolveTestFile();
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var assertions = _assertions;
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if (assertions == null) {
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assertions = _assertions = TypeAssertions(typeProvider);
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_isType = assertions.isType;
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_hasElement = assertions.hasElement;
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_isInstantiationOf = assertions.isInstantiationOf;
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_isInt = assertions.isInt;
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_isNull = assertions.isNull;
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_isNum = assertions.isNum;
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_isObject = assertions.isObject;
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_isString = assertions.isString;
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_isDynamic = assertions.isDynamic;
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_isListOf = assertions.isListOf;
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_isMapOf = assertions.isMapOf;
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_isFunction2Of = assertions.isFunction2Of;
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_isFutureOf = _isInstantiationOf(_hasElement(typeProvider.futureElement));
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_isFutureOrOf =
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_isInstantiationOf(_hasElement(typeProvider.futureOrElement));
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_isFutureOfDynamic = _isFutureOf([_isDynamic]);
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_isFutureOfInt = _isFutureOf([_isInt]);
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_isFutureOfNull = _isFutureOf([_isNull]);
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_isFutureOrOfInt = _isFutureOrOf([_isInt]);
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}
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return result;
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}
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test_async_method_propagation() async {
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String code = r'''
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class A {
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Future f0() => new Future.value(3);
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Future f1() async => new Future.value(3);
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Future f2() async => await new Future.value(3);
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Future<int> f3() => new Future.value(3);
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Future<int> f4() async => new Future.value(3);
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Future<int> f5() async => await new Future.value(3);
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Future g0() { return new Future.value(3); }
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Future g1() async { return new Future.value(3); }
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Future g2() async { return await new Future.value(3); }
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Future<int> g3() { return new Future.value(3); }
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Future<int> g4() async { return new Future.value(3); }
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Future<int> g5() async { return await new Future.value(3); }
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}
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''';
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await resolveTestCode(code);
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void check(String name, Asserter<InterfaceType> typeTest) {
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MethodDeclaration test = AstFinder.getMethodInClass(unit, "A", name);
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FunctionBody body = test.body;
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Expression returnExp;
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if (body is ExpressionFunctionBody) {
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returnExp = body.expression;
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} else {
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var stmt =
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(body as BlockFunctionBody).block.statements[0] as ReturnStatement;
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returnExp = stmt.expression!;
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}
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DartType type = returnExp.typeOrThrow;
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if (returnExp is AwaitExpression) {
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type = returnExp.expression.typeOrThrow;
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}
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typeTest(type as InterfaceType);
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}
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check("f0", _isFutureOfDynamic);
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check("f1", _isFutureOfDynamic);
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check("f2", _isFutureOfDynamic);
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check("f3", _isFutureOfInt);
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check("f4", _isFutureOfInt);
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check("f5", _isFutureOfInt);
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check("g0", _isFutureOfDynamic);
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check("g1", _isFutureOfDynamic);
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check("g2", _isFutureOfDynamic);
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check("g3", _isFutureOfInt);
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check("g4", _isFutureOfInt);
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check("g5", _isFutureOfInt);
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}
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test_async_propagation() async {
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String code = r'''
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Future f0() => new Future.value(3);
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Future f1() async => new Future.value(3);
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Future f2() async => await new Future.value(3);
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Future<int> f3() => new Future.value(3);
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Future<int> f4() async => new Future.value(3);
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Future<int> f5() async => await new Future.value(3);
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Future g0() { return new Future.value(3); }
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Future g1() async { return new Future.value(3); }
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Future g2() async { return await new Future.value(3); }
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Future<int> g3() { return new Future.value(3); }
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Future<int> g4() async { return new Future.value(3); }
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Future<int> g5() async { return await new Future.value(3); }
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''';
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await resolveTestCode(code);
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void check(String name, Asserter<InterfaceType> typeTest) {
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FunctionDeclaration test = AstFinder.getTopLevelFunction(unit, name);
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var body = test.functionExpression.body;
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Expression returnExp;
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if (body is ExpressionFunctionBody) {
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returnExp = body.expression;
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} else {
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var stmt =
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(body as BlockFunctionBody).block.statements[0] as ReturnStatement;
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returnExp = stmt.expression!;
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}
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DartType type = returnExp.typeOrThrow;
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if (returnExp is AwaitExpression) {
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type = returnExp.expression.typeOrThrow;
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}
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typeTest(type as InterfaceType);
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}
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check("f0", _isFutureOfDynamic);
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check("f1", _isFutureOfDynamic);
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check("f2", _isFutureOfDynamic);
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check("f3", _isFutureOfInt);
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check("f4", _isFutureOfInt);
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check("f5", _isFutureOfInt);
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check("g0", _isFutureOfDynamic);
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check("g1", _isFutureOfDynamic);
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check("g2", _isFutureOfDynamic);
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check("g3", _isFutureOfInt);
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check("g4", _isFutureOfInt);
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check("g5", _isFutureOfInt);
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}
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test_cascadeExpression() async {
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String code = r'''
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class A<T> {
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List<T> map(T a, List<T> mapper(T x)) => mapper(a);
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}
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void main () {
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A<int> a = new A()..map(0, (x) => [x]);
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}
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''';
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await resolveTestCode(code);
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List<Statement> statements =
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AstFinder.getStatementsInTopLevelFunction(unit, "main");
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CascadeExpression fetch(int i) {
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var stmt = statements[i] as VariableDeclarationStatement;
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VariableDeclaration decl = stmt.variables.variables[0];
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var exp = decl.initializer as CascadeExpression;
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return exp;
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}
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Element elementA = AstFinder.getClass(unit, "A").declaredElement!;
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CascadeExpression cascade = fetch(0);
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_isInstantiationOf(_hasElement(elementA))([_isInt])(cascade.typeOrThrow);
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var invoke = cascade.cascadeSections[0] as MethodInvocation;
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var function = invoke.argumentList.arguments[1] as FunctionExpression;
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ExecutableElement f0 = function.declaredElement!;
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_isListOf(_isInt)(f0.type.returnType as InterfaceType);
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expect(f0.type.normalParameterTypes[0], typeProvider.intType);
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}
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test_constrainedByBounds1() async {
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// Test that upwards inference with two type variables correctly
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// propogates from the constrained variable to the unconstrained
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// variable if they are ordered left to right.
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String code = r'''
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T f<S, T extends S>(S x) => null;
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void test() { var x = f(3); }
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''';
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await assertErrorsInCode(code, [
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error(HintCode.UNUSED_LOCAL_VARIABLE, 60, 1),
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]);
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List<Statement> statements =
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AstFinder.getStatementsInTopLevelFunction(unit, "test");
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var stmt = statements[0] as VariableDeclarationStatement;
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VariableDeclaration decl = stmt.variables.variables[0];
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Expression call = decl.initializer!;
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_isInt(call.typeOrThrow);
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}
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test_constrainedByBounds2() async {
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// Test that upwards inference with two type variables does
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// propogate from the constrained variable to the unconstrained
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// variable if they are ordered right to left.
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String code = r'''
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T f<T extends S, S>(S x) => null;
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void test() { var x = f(3); }
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''';
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await assertErrorsInCode(code, [
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error(HintCode.UNUSED_LOCAL_VARIABLE, 60, 1),
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]);
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List<Statement> statements =
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AstFinder.getStatementsInTopLevelFunction(unit, "test");
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var stmt = statements[0] as VariableDeclarationStatement;
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VariableDeclaration decl = stmt.variables.variables[0];
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Expression call = decl.initializer!;
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_isInt(call.typeOrThrow);
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}
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test_constrainedByBounds3() async {
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var code = r'''
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T f<T extends S, S extends int>(S x) => null;
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void test() { var x = f(3); }
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''';
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await assertErrorsInCode(code, [
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error(HintCode.UNUSED_LOCAL_VARIABLE, 76, 1),
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]);
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List<Statement> statements =
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AstFinder.getStatementsInTopLevelFunction(unit, "test");
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var stmt = statements[0] as VariableDeclarationStatement;
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VariableDeclaration decl = stmt.variables.variables[0];
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Expression call = decl.initializer!;
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_isInt(call.typeOrThrow);
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}
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test_constrainedByBounds4() async {
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// Test that upwards inference with two type variables correctly
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// propogates from the constrained variable to the unconstrained
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// variable if they are ordered left to right, when the variable
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// appears co and contra variantly
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String code = r'''
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typedef To Func1<From, To>(From x);
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T f<S, T extends Func1<S, S>>(S x) => null;
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void test() { var x = f(3)(4); }
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''';
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await assertErrorsInCode(code, [
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error(HintCode.UNUSED_LOCAL_VARIABLE, 110, 1),
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]);
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List<Statement> statements =
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AstFinder.getStatementsInTopLevelFunction(unit, "test");
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var stmt = statements[0] as VariableDeclarationStatement;
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VariableDeclaration decl = stmt.variables.variables[0];
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Expression call = decl.initializer!;
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_isInt(call.typeOrThrow);
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}
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test_constrainedByBounds5() async {
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// Test that upwards inference with two type variables does not
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// propagate from the constrained variable to the unconstrained
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// variable if they are ordered right to left, when the variable
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// appears co- and contra-variantly, and that an error is issued
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// for the non-matching bound.
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String code = r'''
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typedef To Func1<From, To>(From x);
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T f<T extends Func1<S, S>, S>(S x) => null;
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void test() { var x = f(3)(null); }
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''';
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await assertErrorsInCode(code, [
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error(HintCode.UNUSED_LOCAL_VARIABLE, 110, 1),
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error(CompileTimeErrorCode.COULD_NOT_INFER, 114, 1),
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]);
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List<Statement> statements =
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AstFinder.getStatementsInTopLevelFunction(unit, "test");
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var stmt = statements[0] as VariableDeclarationStatement;
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VariableDeclaration decl = stmt.variables.variables[0];
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Expression call = decl.initializer!;
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_isDynamic(call.typeOrThrow);
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}
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test_constructorInitializer_propagation() async {
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String code = r'''
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class A {
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List<String> x;
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A() : this.x = [];
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}
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''';
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await assertNoErrorsInCode(code);
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ConstructorDeclaration constructor =
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AstFinder.getConstructorInClass(unit, "A", null);
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var assignment = constructor.initializers[0] as ConstructorFieldInitializer;
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Expression exp = assignment.expression;
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_isListOf(_isString)(exp.staticType as InterfaceType);
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}
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test_factoryConstructor_propagation() async {
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String code = r'''
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class A<T> {
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factory A() { return new B(); }
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}
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class B<S> extends A<S> {}
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''';
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await assertErrorsInCode(code, [
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error(
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CompileTimeErrorCode.NO_GENERATIVE_CONSTRUCTORS_IN_SUPERCLASS, 92, 4),
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]);
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ConstructorDeclaration constructor =
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AstFinder.getConstructorInClass(unit, "A", null);
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var body = constructor.body as BlockFunctionBody;
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var stmt = body.block.statements[0] as ReturnStatement;
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var exp = stmt.expression as InstanceCreationExpression;
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ClassElement elementB = AstFinder.getClass(unit, "B").declaredElement!;
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ClassElement elementA = AstFinder.getClass(unit, "A").declaredElement!;
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expect(exp.constructorName.type.typeOrThrow.element, elementB);
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_isInstantiationOf(_hasElement(elementB))([
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_isType(elementA.typeParameters[0]
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.instantiate(nullabilitySuffix: NullabilitySuffix.star))
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])(exp.typeOrThrow);
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}
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test_fieldDeclaration_propagation() async {
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String code = r'''
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class A {
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List<String> f0 = ["hello"];
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}
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''';
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await assertNoErrorsInCode(code);
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VariableDeclaration field = AstFinder.getFieldInClass(unit, "A", "f0");
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_isListOf(_isString)(field.initializer!.staticType as InterfaceType);
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}
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test_functionDeclaration_body_propagation() async {
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String code = r'''
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typedef T Function2<S, T>(S x);
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List<int> test1() => [];
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Function2<int, int> test2 (int x) {
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Function2<String, int> inner() {
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return (x) => x.length;
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}
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return (x) => x;
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}
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''';
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await assertErrorsInCode(code, [
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error(HintCode.UNUSED_ELEMENT, 144, 5),
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]);
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Asserter<InterfaceType> assertListOfInt = _isListOf(_isInt);
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FunctionDeclaration test1 = AstFinder.getTopLevelFunction(unit, "test1");
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var body = test1.functionExpression.body as ExpressionFunctionBody;
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assertListOfInt(body.expression.staticType as InterfaceType);
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List<Statement> statements =
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AstFinder.getStatementsInTopLevelFunction(unit, "test2");
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FunctionDeclaration inner =
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(statements[0] as FunctionDeclarationStatement).functionDeclaration;
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var body0 = inner.functionExpression.body as BlockFunctionBody;
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var return0 = body0.block.statements[0] as ReturnStatement;
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Expression anon0 = return0.expression!;
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var type0 = anon0.staticType as FunctionType;
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expect(type0.returnType, typeProvider.intType);
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expect(type0.normalParameterTypes[0], typeProvider.stringType);
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var anon1 =
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(statements[1] as ReturnStatement).expression as FunctionExpression;
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FunctionType type1 = anon1.declaredElement!.type;
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expect(type1.returnType, typeProvider.intType);
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expect(type1.normalParameterTypes[0], typeProvider.intType);
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}
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test_functionLiteral_assignment_typedArguments() async {
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String code = r'''
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typedef T Function2<S, T>(S x);
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void main () {
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Function2<int, String> l0 = (int x) => null;
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Function2<int, String> l1 = (int x) => "hello";
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Function2<int, String> l2 = (String x) => "hello";
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Function2<int, String> l3 = (int x) => 3;
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Function2<int, String> l4 = (int x) {return 3;};
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}
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''';
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await assertErrorsInCode(code, [
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error(HintCode.UNUSED_LOCAL_VARIABLE, 91, 2),
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error(HintCode.UNUSED_LOCAL_VARIABLE, 144, 2),
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error(HintCode.UNUSED_LOCAL_VARIABLE, 200, 2),
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error(CompileTimeErrorCode.INVALID_ASSIGNMENT, 205, 21),
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error(HintCode.UNUSED_LOCAL_VARIABLE, 259, 2),
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error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_CLOSURE, 275, 1),
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error(HintCode.UNUSED_LOCAL_VARIABLE, 309, 2),
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error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_CLOSURE, 330, 1),
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]);
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List<Statement> statements =
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AstFinder.getStatementsInTopLevelFunction(unit, "main");
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DartType literal(int i) {
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var stmt = statements[i] as VariableDeclarationStatement;
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VariableDeclaration decl = stmt.variables.variables[0];
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var exp = decl.initializer as FunctionExpression;
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return exp.declaredElement!.type;
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}
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|
|
_isFunction2Of(_isInt, _isNull)(literal(0));
|
|
_isFunction2Of(_isInt, _isString)(literal(1));
|
|
_isFunction2Of(_isString, _isString)(literal(2));
|
|
_isFunction2Of(_isInt, _isString)(literal(3));
|
|
_isFunction2Of(_isInt, _isString)(literal(4));
|
|
}
|
|
|
|
test_functionLiteral_assignment_unTypedArguments() async {
|
|
String code = r'''
|
|
typedef T Function2<S, T>(S x);
|
|
|
|
void main () {
|
|
Function2<int, String> l0 = (x) => null;
|
|
Function2<int, String> l1 = (x) => "hello";
|
|
Function2<int, String> l2 = (x) => "hello";
|
|
Function2<int, String> l3 = (x) => 3;
|
|
Function2<int, String> l4 = (x) {return 3;};
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 91, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 140, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 192, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 244, 2),
|
|
error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_CLOSURE, 256, 1),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 290, 2),
|
|
error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_CLOSURE, 307, 1),
|
|
]);
|
|
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "main");
|
|
DartType literal(int i) {
|
|
var stmt = statements[i] as VariableDeclarationStatement;
|
|
VariableDeclaration decl = stmt.variables.variables[0];
|
|
var exp = decl.initializer as FunctionExpression;
|
|
return exp.declaredElement!.type;
|
|
}
|
|
|
|
_isFunction2Of(_isInt, _isNull)(literal(0));
|
|
_isFunction2Of(_isInt, _isString)(literal(1));
|
|
_isFunction2Of(_isInt, _isString)(literal(2));
|
|
_isFunction2Of(_isInt, _isString)(literal(3));
|
|
_isFunction2Of(_isInt, _isString)(literal(4));
|
|
}
|
|
|
|
test_functionLiteral_body_propagation() async {
|
|
String code = r'''
|
|
typedef T Function2<S, T>(S x);
|
|
|
|
void main () {
|
|
Function2<int, List<String>> l0 = (int x) => ["hello"];
|
|
Function2<int, List<String>> l1 = (String x) => ["hello"];
|
|
Function2<int, List<String>> l2 = (int x) => [3];
|
|
Function2<int, List<String>> l3 = (int x) {return [3];};
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 97, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 161, 2),
|
|
error(CompileTimeErrorCode.INVALID_ASSIGNMENT, 166, 23),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 228, 2),
|
|
error(CompileTimeErrorCode.LIST_ELEMENT_TYPE_NOT_ASSIGNABLE, 245, 1),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 286, 2),
|
|
error(CompileTimeErrorCode.LIST_ELEMENT_TYPE_NOT_ASSIGNABLE, 308, 1),
|
|
]);
|
|
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "main");
|
|
Expression functionReturnValue(int i) {
|
|
var stmt = statements[i] as VariableDeclarationStatement;
|
|
VariableDeclaration decl = stmt.variables.variables[0];
|
|
var exp = decl.initializer as FunctionExpression;
|
|
FunctionBody body = exp.body;
|
|
if (body is ExpressionFunctionBody) {
|
|
return body.expression;
|
|
} else {
|
|
Statement stmt = (body as BlockFunctionBody).block.statements[0];
|
|
return (stmt as ReturnStatement).expression!;
|
|
}
|
|
}
|
|
|
|
Asserter<InterfaceType> assertListOfString = _isListOf(_isString);
|
|
assertListOfString(functionReturnValue(0).staticType as InterfaceType);
|
|
assertListOfString(functionReturnValue(1).staticType as InterfaceType);
|
|
assertListOfString(functionReturnValue(2).staticType as InterfaceType);
|
|
assertListOfString(functionReturnValue(3).staticType as InterfaceType);
|
|
}
|
|
|
|
test_functionLiteral_functionExpressionInvocation_typedArguments() async {
|
|
String code = r'''
|
|
class Mapper<F, T> {
|
|
T map(T mapper(F x)) => mapper(null);
|
|
}
|
|
|
|
void main () {
|
|
(new Mapper<int, String>().map)((int x) => null);
|
|
(new Mapper<int, String>().map)((int x) => "hello");
|
|
(new Mapper<int, String>().map)((String x) => "hello");
|
|
(new Mapper<int, String>().map)((int x) => 3);
|
|
(new Mapper<int, String>().map)((int x) {return 3;});
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 262, 21),
|
|
error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_CLOSURE, 337, 1),
|
|
error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_CLOSURE, 397, 1),
|
|
]);
|
|
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "main");
|
|
DartType literal(int i) {
|
|
var stmt = statements[i] as ExpressionStatement;
|
|
var invk = stmt.expression as FunctionExpressionInvocation;
|
|
var exp = invk.argumentList.arguments[0] as FunctionExpression;
|
|
return exp.declaredElement!.type;
|
|
}
|
|
|
|
_isFunction2Of(_isInt, _isNull)(literal(0));
|
|
_isFunction2Of(_isInt, _isString)(literal(1));
|
|
_isFunction2Of(_isString, _isString)(literal(2));
|
|
_isFunction2Of(_isInt, _isString)(literal(3));
|
|
_isFunction2Of(_isInt, _isString)(literal(4));
|
|
}
|
|
|
|
test_functionLiteral_functionExpressionInvocation_unTypedArguments() async {
|
|
String code = r'''
|
|
class Mapper<F, T> {
|
|
T map(T mapper(F x)) => mapper(null);
|
|
}
|
|
|
|
void main () {
|
|
(new Mapper<int, String>().map)((x) => null);
|
|
(new Mapper<int, String>().map)((x) => "hello");
|
|
(new Mapper<int, String>().map)((x) => "hello");
|
|
(new Mapper<int, String>().map)((x) => 3);
|
|
(new Mapper<int, String>().map)((x) {return 3;});
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_CLOSURE, 318, 1),
|
|
error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_CLOSURE, 374, 1),
|
|
]);
|
|
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "main");
|
|
DartType literal(int i) {
|
|
var stmt = statements[i] as ExpressionStatement;
|
|
var invk = stmt.expression as FunctionExpressionInvocation;
|
|
var exp = invk.argumentList.arguments[0] as FunctionExpression;
|
|
return exp.declaredElement!.type;
|
|
}
|
|
|
|
_isFunction2Of(_isInt, _isNull)(literal(0));
|
|
_isFunction2Of(_isInt, _isString)(literal(1));
|
|
_isFunction2Of(_isInt, _isString)(literal(2));
|
|
_isFunction2Of(_isInt, _isString)(literal(3));
|
|
_isFunction2Of(_isInt, _isString)(literal(4));
|
|
}
|
|
|
|
test_functionLiteral_functionInvocation_typedArguments() async {
|
|
String code = r'''
|
|
String map(String mapper(int x)) => mapper(null);
|
|
|
|
void main () {
|
|
map((int x) => null);
|
|
map((int x) => "hello");
|
|
map((String x) => "hello");
|
|
map((int x) => 3);
|
|
map((int x) {return 3;});
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 153, 21),
|
|
error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_CLOSURE, 200, 1),
|
|
error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_CLOSURE, 232, 1),
|
|
]);
|
|
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "main");
|
|
DartType literal(int i) {
|
|
var stmt = statements[i] as ExpressionStatement;
|
|
var invk = stmt.expression as MethodInvocation;
|
|
var exp = invk.argumentList.arguments[0] as FunctionExpression;
|
|
return exp.declaredElement!.type;
|
|
}
|
|
|
|
_isFunction2Of(_isInt, _isNull)(literal(0));
|
|
_isFunction2Of(_isInt, _isString)(literal(1));
|
|
_isFunction2Of(_isString, _isString)(literal(2));
|
|
_isFunction2Of(_isInt, _isString)(literal(3));
|
|
_isFunction2Of(_isInt, _isString)(literal(4));
|
|
}
|
|
|
|
test_functionLiteral_functionInvocation_unTypedArguments() async {
|
|
String code = r'''
|
|
String map(String mapper(int x)) => mapper(null);
|
|
|
|
void main () {
|
|
map((x) => null);
|
|
map((x) => "hello");
|
|
map((x) => "hello");
|
|
map((x) => 3);
|
|
map((x) {return 3;});
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_CLOSURE, 181, 1),
|
|
error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_CLOSURE, 209, 1),
|
|
]);
|
|
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "main");
|
|
DartType literal(int i) {
|
|
var stmt = statements[i] as ExpressionStatement;
|
|
var invk = stmt.expression as MethodInvocation;
|
|
var exp = invk.argumentList.arguments[0] as FunctionExpression;
|
|
return exp.declaredElement!.type;
|
|
}
|
|
|
|
_isFunction2Of(_isInt, _isNull)(literal(0));
|
|
_isFunction2Of(_isInt, _isString)(literal(1));
|
|
_isFunction2Of(_isInt, _isString)(literal(2));
|
|
_isFunction2Of(_isInt, _isString)(literal(3));
|
|
_isFunction2Of(_isInt, _isString)(literal(4));
|
|
}
|
|
|
|
test_functionLiteral_methodInvocation_typedArguments() async {
|
|
String code = r'''
|
|
class Mapper<F, T> {
|
|
T map(T mapper(F x)) => mapper(null);
|
|
}
|
|
|
|
void main () {
|
|
new Mapper<int, String>().map((int x) => null);
|
|
new Mapper<int, String>().map((int x) => "hello");
|
|
new Mapper<int, String>().map((String x) => "hello");
|
|
new Mapper<int, String>().map((int x) => 3);
|
|
new Mapper<int, String>().map((int x) {return 3;});
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 256, 21),
|
|
error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_CLOSURE, 329, 1),
|
|
error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_CLOSURE, 387, 1),
|
|
]);
|
|
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "main");
|
|
DartType literal(int i) {
|
|
var stmt = statements[i] as ExpressionStatement;
|
|
var invk = stmt.expression as MethodInvocation;
|
|
var exp = invk.argumentList.arguments[0] as FunctionExpression;
|
|
return exp.declaredElement!.type;
|
|
}
|
|
|
|
_isFunction2Of(_isInt, _isNull)(literal(0));
|
|
_isFunction2Of(_isInt, _isString)(literal(1));
|
|
_isFunction2Of(_isString, _isString)(literal(2));
|
|
_isFunction2Of(_isInt, _isString)(literal(3));
|
|
_isFunction2Of(_isInt, _isString)(literal(4));
|
|
}
|
|
|
|
test_functionLiteral_methodInvocation_unTypedArguments() async {
|
|
String code = r'''
|
|
class Mapper<F, T> {
|
|
T map(T mapper(F x)) => mapper(null);
|
|
}
|
|
|
|
void main () {
|
|
new Mapper<int, String>().map((x) => null);
|
|
new Mapper<int, String>().map((x) => "hello");
|
|
new Mapper<int, String>().map((x) => "hello");
|
|
new Mapper<int, String>().map((x) => 3);
|
|
new Mapper<int, String>().map((x) {return 3;});
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_CLOSURE, 310, 1),
|
|
error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_CLOSURE, 364, 1),
|
|
]);
|
|
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "main");
|
|
DartType literal(int i) {
|
|
var stmt = statements[i] as ExpressionStatement;
|
|
var invk = stmt.expression as MethodInvocation;
|
|
var exp = invk.argumentList.arguments[0] as FunctionExpression;
|
|
return exp.declaredElement!.type;
|
|
}
|
|
|
|
_isFunction2Of(_isInt, _isNull)(literal(0));
|
|
_isFunction2Of(_isInt, _isString)(literal(1));
|
|
_isFunction2Of(_isInt, _isString)(literal(2));
|
|
_isFunction2Of(_isInt, _isString)(literal(3));
|
|
_isFunction2Of(_isInt, _isString)(literal(4));
|
|
}
|
|
|
|
test_functionLiteral_unTypedArgument_propagation() async {
|
|
String code = r'''
|
|
typedef T Function2<S, T>(S x);
|
|
|
|
void main () {
|
|
Function2<int, int> l0 = (x) => x;
|
|
Function2<int, int> l1 = (x) => x+1;
|
|
Function2<int, String> l2 = (x) => x;
|
|
Function2<int, String> l3 = (x) => x.toLowerCase();
|
|
Function2<String, String> l4 = (x) => x.toLowerCase();
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 88, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 131, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 179, 2),
|
|
error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_CLOSURE, 191, 1),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 225, 2),
|
|
error(CompileTimeErrorCode.UNDEFINED_METHOD, 239, 11),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 288, 2),
|
|
]);
|
|
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "main");
|
|
Expression functionReturnValue(int i) {
|
|
var stmt = statements[i] as VariableDeclarationStatement;
|
|
VariableDeclaration decl = stmt.variables.variables[0];
|
|
var exp = decl.initializer as FunctionExpression;
|
|
FunctionBody body = exp.body;
|
|
if (body is ExpressionFunctionBody) {
|
|
return body.expression;
|
|
} else {
|
|
Statement stmt = (body as BlockFunctionBody).block.statements[0];
|
|
return (stmt as ReturnStatement).expression!;
|
|
}
|
|
}
|
|
|
|
expect(functionReturnValue(0).staticType, typeProvider.intType);
|
|
expect(functionReturnValue(1).staticType, typeProvider.intType);
|
|
expect(functionReturnValue(2).staticType, typeProvider.intType);
|
|
expect(functionReturnValue(3).staticType, typeProvider.dynamicType);
|
|
expect(functionReturnValue(4).staticType, typeProvider.stringType);
|
|
}
|
|
|
|
test_futureOr_assignFromFuture() async {
|
|
// Test a Future<T> can be assigned to FutureOr<T>.
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
FutureOr<T> mk<T>(Future<T> x) => x;
|
|
test() => mk(new Future<int>.value(42));
|
|
''');
|
|
_isFutureOrOfInt(invoke.staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOr_assignFromValue() async {
|
|
// Test a T can be assigned to FutureOr<T>.
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
FutureOr<T> mk<T>(T x) => x;
|
|
test() => mk(42);
|
|
''');
|
|
_isFutureOrOfInt(invoke.staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOr_asyncExpressionBody() async {
|
|
// A FutureOr<T> can be used as the expression body for an async function
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
Future<T> mk<T>(FutureOr<T> x) async => x;
|
|
test() => mk(42);
|
|
''');
|
|
_isFutureOfInt(invoke.staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOr_asyncReturn() async {
|
|
// A FutureOr<T> can be used as the return value for an async function
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
Future<T> mk<T>(FutureOr<T> x) async { return x; }
|
|
test() => mk(42);
|
|
''');
|
|
_isFutureOfInt(invoke.staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOr_await() async {
|
|
// Test a FutureOr<T> can be awaited.
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
Future<T> mk<T>(FutureOr<T> x) async => await x;
|
|
test() => mk(42);
|
|
''');
|
|
_isFutureOfInt(invoke.staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOr_downwards1() async {
|
|
// Test that downwards inference interacts correctly with FutureOr
|
|
// parameters.
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
Future<T> mk<T>(FutureOr<T> x) => null;
|
|
Future<int> test() => mk(new Future<int>.value(42));
|
|
''');
|
|
_isFutureOfInt(invoke.staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOr_downwards2() async {
|
|
// Test that downwards inference interacts correctly with FutureOr
|
|
// parameters when the downwards context is FutureOr
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
Future<T> mk<T>(FutureOr<T> x) => null;
|
|
FutureOr<int> test() => mk(new Future<int>.value(42));
|
|
''');
|
|
_isFutureOfInt(invoke.staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOr_downwards3() async {
|
|
// Test that downwards inference correctly propogates into
|
|
// arguments.
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
Future<T> mk<T>(FutureOr<T> x) => null;
|
|
Future<int> test() => mk(new Future.value(42));
|
|
''');
|
|
_isFutureOfInt(invoke.staticType as InterfaceType);
|
|
_isFutureOfInt(
|
|
invoke.argumentList.arguments[0].staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOr_downwards4() async {
|
|
// Test that downwards inference interacts correctly with FutureOr
|
|
// parameters when the downwards context is FutureOr
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
Future<T> mk<T>(FutureOr<T> x) => null;
|
|
FutureOr<int> test() => mk(new Future.value(42));
|
|
''');
|
|
_isFutureOfInt(invoke.staticType as InterfaceType);
|
|
_isFutureOfInt(
|
|
invoke.argumentList.arguments[0].staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOr_downwards5() async {
|
|
// Test that downwards inference correctly pins the type when it
|
|
// comes from a FutureOr
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
Future<T> mk<T>(FutureOr<T> x) => null;
|
|
FutureOr<num> test() => mk(new Future.value(42));
|
|
''');
|
|
_isFutureOf([_isNum])(invoke.staticType as InterfaceType);
|
|
_isFutureOf([_isNum])(
|
|
invoke.argumentList.arguments[0].staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOr_downwards6() async {
|
|
// Test that downwards inference doesn't decompose FutureOr
|
|
// when instantiating type variables.
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
T mk<T>(T x) => null;
|
|
FutureOr<int> test() => mk(new Future.value(42));
|
|
''');
|
|
_isFutureOrOfInt(invoke.staticType as InterfaceType);
|
|
_isFutureOfInt(
|
|
invoke.argumentList.arguments[0].staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOr_downwards7() async {
|
|
// Test that downwards inference incorporates bounds correctly
|
|
// when instantiating type variables.
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
T mk<T extends Future<int>>(T x) => null;
|
|
FutureOr<int> test() => mk(new Future.value(42));
|
|
''');
|
|
_isFutureOfInt(invoke.staticType as InterfaceType);
|
|
_isFutureOfInt(
|
|
invoke.argumentList.arguments[0].staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOr_downwards8() async {
|
|
// Test that downwards inference incorporates bounds correctly
|
|
// when instantiating type variables.
|
|
// TODO(leafp): I think this should pass once the inference changes
|
|
// that jmesserly is adding are landed.
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
T mk<T extends Future<Object>>(T x) => null;
|
|
FutureOr<int> test() => mk(new Future.value(42));
|
|
''');
|
|
_isFutureOfInt(invoke.staticType as InterfaceType);
|
|
_isFutureOfInt(
|
|
invoke.argumentList.arguments[0].staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOr_downwards9() async {
|
|
// Test that downwards inference decomposes correctly with
|
|
// other composite types
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
List<T> mk<T>(T x) => null;
|
|
FutureOr<List<int>> test() => mk(3);
|
|
''');
|
|
_isListOf(_isInt)(invoke.staticType as InterfaceType);
|
|
_isInt(invoke.argumentList.arguments[0].typeOrThrow);
|
|
}
|
|
|
|
test_futureOr_methods1() async {
|
|
// Test that FutureOr has the Object methods
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
dynamic test(FutureOr<int> x) => x.toString();
|
|
''');
|
|
_isString(invoke.typeOrThrow);
|
|
}
|
|
|
|
test_futureOr_methods2() async {
|
|
// Test that FutureOr does not have the constituent type methods
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
dynamic test(FutureOr<int> x) => x.abs();
|
|
''', expectedErrors: [
|
|
error(CompileTimeErrorCode.UNDEFINED_METHOD, 61, 3),
|
|
]);
|
|
_isDynamic(invoke.typeOrThrow);
|
|
}
|
|
|
|
test_futureOr_methods3() async {
|
|
// Test that FutureOr does not have the Future type methods
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
dynamic test(FutureOr<int> x) => x.then((x) => x);
|
|
''', expectedErrors: [
|
|
error(CompileTimeErrorCode.UNDEFINED_METHOD, 61, 4),
|
|
]);
|
|
_isDynamic(invoke.typeOrThrow);
|
|
}
|
|
|
|
test_futureOr_methods4() async {
|
|
// Test that FutureOr<dynamic> does not have all methods
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
dynamic test(FutureOr<dynamic> x) => x.abs();
|
|
''', expectedErrors: [
|
|
error(CompileTimeErrorCode.UNDEFINED_METHOD, 65, 3),
|
|
]);
|
|
_isDynamic(invoke.typeOrThrow);
|
|
}
|
|
|
|
test_futureOr_no_return() async {
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
FutureOr<T> mk<T>(Future<T> x) => x;
|
|
Future<int> f;
|
|
test() => f.then((int x) {});
|
|
''');
|
|
_isFunction2Of(_isInt, _isNull)(
|
|
invoke.argumentList.arguments[0].typeOrThrow);
|
|
_isFutureOfNull(invoke.staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOr_no_return_value() async {
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
FutureOr<T> mk<T>(Future<T> x) => x;
|
|
Future<int> f;
|
|
test() => f.then((int x) {return;});
|
|
''');
|
|
_isFunction2Of(_isInt, _isNull)(
|
|
invoke.argumentList.arguments[0].typeOrThrow);
|
|
_isFutureOfNull(invoke.staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOr_return_null() async {
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
FutureOr<T> mk<T>(Future<T> x) => x;
|
|
Future<int> f;
|
|
test() => f.then((int x) {return null;});
|
|
''');
|
|
_isFunction2Of(_isInt, _isNull)(
|
|
invoke.argumentList.arguments[0].typeOrThrow);
|
|
_isFutureOfNull(invoke.staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOr_upwards1() async {
|
|
// Test that upwards inference correctly prefers to instantiate type
|
|
// variables with the "smaller" solution when both are possible.
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
Future<T> mk<T>(FutureOr<T> x) => null;
|
|
dynamic test() => mk(new Future<int>.value(42));
|
|
''');
|
|
_isFutureOfInt(invoke.staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOr_upwards2() async {
|
|
// Test that upwards inference fails when the solution doesn't
|
|
// match the bound.
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
Future<T> mk<T extends Future<Object>>(FutureOr<T> x) => null;
|
|
dynamic test() => mk(new Future<int>.value(42));
|
|
''', expectedErrors: [
|
|
error(CompileTimeErrorCode.COULD_NOT_INFER, 111, 2),
|
|
]);
|
|
_isFutureOfInt(invoke.staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOrNull_no_return() async {
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
FutureOr<T> mk<T>(Future<T> x) => x;
|
|
Future<int> f;
|
|
test() => f.then<Null>((int x) {});
|
|
''');
|
|
_isFunction2Of(_isInt, _isNull)(
|
|
invoke.argumentList.arguments[0].typeOrThrow);
|
|
_isFutureOfNull(invoke.staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOrNull_no_return_value() async {
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
FutureOr<T> mk<T>(Future<T> x) => x;
|
|
Future<int> f;
|
|
test() => f.then<Null>((int x) {return;});
|
|
''');
|
|
_isFunction2Of(_isInt, _isNull)(
|
|
invoke.argumentList.arguments[0].typeOrThrow);
|
|
_isFutureOfNull(invoke.staticType as InterfaceType);
|
|
}
|
|
|
|
test_futureOrNull_return_null() async {
|
|
MethodInvocation invoke = await _testFutureOr(r'''
|
|
FutureOr<T> mk<T>(Future<T> x) => x;
|
|
Future<int> f;
|
|
test() => f.then<Null>((int x) { return null;});
|
|
''');
|
|
_isFunction2Of(_isInt, _isNull)(
|
|
invoke.argumentList.arguments[0].typeOrThrow);
|
|
_isFutureOfNull(invoke.staticType as InterfaceType);
|
|
}
|
|
|
|
test_generic_partial() async {
|
|
// Test that upward and downward type inference handles partial
|
|
// type schemas correctly. Downwards inference in a partial context
|
|
// (e.g. Map<String, ?>) should still allow upwards inference to fill
|
|
// in the missing information.
|
|
String code = r'''
|
|
class A<T> {
|
|
A(T x);
|
|
A.fromA(A<T> a) {}
|
|
A.fromMap(Map<String, T> m) {}
|
|
A.fromList(List<T> m) {}
|
|
A.fromT(T t) {}
|
|
A.fromB(B<T, String> a) {}
|
|
}
|
|
|
|
class B<S, T> {
|
|
B(S s);
|
|
}
|
|
|
|
void test() {
|
|
var a0 = new A.fromA(new A(3));
|
|
var a1 = new A.fromMap({'hello' : 3});
|
|
var a2 = new A.fromList([3]);
|
|
var a3 = new A.fromT(3);
|
|
var a4 = new A.fromB(new B(3));
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 205, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 241, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 284, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 318, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 347, 2),
|
|
]);
|
|
|
|
Element elementA = AstFinder.getClass(unit, "A").declaredElement!;
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "test");
|
|
void check(int i) {
|
|
var stmt = statements[i] as VariableDeclarationStatement;
|
|
VariableDeclaration decl = stmt.variables.variables[0];
|
|
Expression init = decl.initializer!;
|
|
_isInstantiationOf(_hasElement(elementA))([_isInt])(init.typeOrThrow);
|
|
}
|
|
|
|
for (var i = 0; i < 5; i++) {
|
|
check(i);
|
|
}
|
|
}
|
|
|
|
test_inferConstructor_unknownTypeLowerBound() async {
|
|
var code = r'''
|
|
class C<T> {
|
|
C(void callback(List<T> a));
|
|
}
|
|
test() {
|
|
// downwards inference pushes List<?> and in parameter position this
|
|
// becomes inferred as List<Null>.
|
|
var c = new C((items) {});
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 225, 1),
|
|
]);
|
|
|
|
DartType cType = findElement.localVar('c').type;
|
|
Element elementC = AstFinder.getClass(unit, "C").declaredElement!;
|
|
|
|
_isInstantiationOf(_hasElement(elementC))([_isDynamic])(cType);
|
|
}
|
|
|
|
test_inference_error_arguments() async {
|
|
var code = r'''
|
|
typedef R F<T, R>(T t);
|
|
|
|
F<T, T> g<T>(F<T, T> f) => (x) => f(f(x));
|
|
|
|
test() {
|
|
var h = g((int x) => 42.0);
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 84, 1),
|
|
error(CompileTimeErrorCode.COULD_NOT_INFER, 88, 1),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 90, 15),
|
|
]);
|
|
_expectInferenceError(r'''
|
|
Couldn't infer type parameter 'T'.
|
|
|
|
Tried to infer 'double' for 'T' which doesn't work:
|
|
Parameter 'f' declared as 'T Function(T)'
|
|
but argument is 'double Function(int)'.
|
|
|
|
Consider passing explicit type argument(s) to the generic.
|
|
|
|
''');
|
|
}
|
|
|
|
test_inference_error_arguments2() async {
|
|
var code = r'''
|
|
typedef R F<T, R>(T t);
|
|
|
|
F<T, T> g<T>(F<T, T> a, F<T, T> b) => (x) => a(b(x));
|
|
|
|
test() {
|
|
var h = g((int x) => 42.0, (double x) => 42);
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 95, 1),
|
|
error(CompileTimeErrorCode.COULD_NOT_INFER, 99, 1),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 101, 15),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 118, 16),
|
|
]);
|
|
_expectInferenceError(r'''
|
|
Couldn't infer type parameter 'T'.
|
|
|
|
Tried to infer 'num' for 'T' which doesn't work:
|
|
Parameter 'a' declared as 'T Function(T)'
|
|
but argument is 'double Function(int)'.
|
|
Parameter 'b' declared as 'T Function(T)'
|
|
but argument is 'int Function(double)'.
|
|
|
|
Consider passing explicit type argument(s) to the generic.
|
|
|
|
''');
|
|
}
|
|
|
|
test_inference_error_extendsFromReturn() async {
|
|
// This is not an inference error because we successfully infer Null.
|
|
var code = r'''
|
|
T max<T extends num>(T x, T y) => x;
|
|
|
|
test() {
|
|
String hello = max(1, 2);
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 56, 5),
|
|
error(CompileTimeErrorCode.INVALID_CAST_LITERAL, 68, 1),
|
|
error(CompileTimeErrorCode.INVALID_CAST_LITERAL, 71, 1),
|
|
]);
|
|
|
|
var h = (AstFinder.getStatementsInTopLevelFunction(unit, "test")[0]
|
|
as VariableDeclarationStatement)
|
|
.variables
|
|
.variables[0];
|
|
var call = h.initializer as MethodInvocation;
|
|
assertInvokeType(call, 'Null Function(Null, Null)');
|
|
}
|
|
|
|
test_inference_error_extendsFromReturn2() async {
|
|
var code = r'''
|
|
typedef R F<T, R>(T t);
|
|
F<T, T> g<T extends num>() => (y) => y;
|
|
|
|
test() {
|
|
F<String, String> hello = g();
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 94, 5),
|
|
error(CompileTimeErrorCode.COULD_NOT_INFER, 102, 1),
|
|
]);
|
|
|
|
_expectInferenceError(r'''
|
|
Couldn't infer type parameter 'T'.
|
|
|
|
Tried to infer 'String' for 'T' which doesn't work:
|
|
Type parameter 'T' is declared to extend 'num' producing 'num'.
|
|
The type 'String' was inferred from:
|
|
Return type declared as 'T Function(T)'
|
|
used where 'String Function(String)' is required.
|
|
|
|
Consider passing explicit type argument(s) to the generic.
|
|
|
|
''');
|
|
}
|
|
|
|
test_inference_error_genericFunction() async {
|
|
var code = r'''
|
|
T max<T extends num>(T x, T y) => x < y ? y : x;
|
|
abstract class Iterable<T> {
|
|
T get first;
|
|
S fold<S>(S s, S f(S s, T t));
|
|
}
|
|
test(Iterable values) {
|
|
num n = values.fold(values.first as num, max);
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 158, 1),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 195, 3),
|
|
error(CompileTimeErrorCode.COULD_NOT_INFER, 195, 3),
|
|
]);
|
|
_expectInferenceError(r'''
|
|
Couldn't infer type parameter 'T'.
|
|
|
|
Tried to infer 'dynamic' for 'T' which doesn't work:
|
|
Function type declared as 'T Function<T extends num>(T, T)'
|
|
used where 'num Function(num, dynamic)' is required.
|
|
|
|
Consider passing explicit type argument(s) to the generic.
|
|
|
|
''');
|
|
}
|
|
|
|
test_inference_error_returnContext() async {
|
|
var code = r'''
|
|
typedef R F<T, R>(T t);
|
|
|
|
F<T, T> g<T>(T t) => (x) => t;
|
|
|
|
test() {
|
|
F<num, int> h = g(42);
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 80, 1),
|
|
error(CompileTimeErrorCode.COULD_NOT_INFER, 84, 1),
|
|
]);
|
|
_expectInferenceError(r'''
|
|
Couldn't infer type parameter 'T'.
|
|
|
|
Tried to infer 'num' for 'T' which doesn't work:
|
|
Return type declared as 'T Function(T)'
|
|
used where 'int Function(num)' is required.
|
|
|
|
Consider passing explicit type argument(s) to the generic.
|
|
|
|
''');
|
|
}
|
|
|
|
test_inference_hints() async {
|
|
var code = r'''
|
|
void main () {
|
|
var x = 3;
|
|
List<int> l0 = [];
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 33, 1),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 58, 2),
|
|
]);
|
|
}
|
|
|
|
test_inference_simplePolymorphicRecursion_function() async {
|
|
// Regression test for https://github.com/dart-lang/sdk/issues/30980
|
|
// Check that inference works properly when inferring the type argument
|
|
// for a self-recursive call with a function type
|
|
var code = r'''
|
|
void _mergeSort<T>(T Function(T) list, int compare(T a, T b), T Function(T) target) {
|
|
_mergeSort(list, compare, target);
|
|
_mergeSort(list, compare, list);
|
|
_mergeSort(target, compare, target);
|
|
_mergeSort(target, compare, list);
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_ELEMENT, 5, 10),
|
|
]);
|
|
|
|
var body = AstFinder.getTopLevelFunction(unit, '_mergeSort')
|
|
.functionExpression
|
|
.body as BlockFunctionBody;
|
|
var stmts = body.block.statements.cast<ExpressionStatement>();
|
|
for (ExpressionStatement stmt in stmts) {
|
|
var invoke = stmt.expression as MethodInvocation;
|
|
assertInvokeType(invoke,
|
|
'void Function(T Function(T), int Function(T, T), T Function(T))');
|
|
}
|
|
}
|
|
|
|
test_inference_simplePolymorphicRecursion_interface() async {
|
|
// Regression test for https://github.com/dart-lang/sdk/issues/30980
|
|
// Check that inference works properly when inferring the type argument
|
|
// for a self-recursive call with an interface type
|
|
var code = r'''
|
|
void _mergeSort<T>(List<T> list, int compare(T a, T b), List<T> target) {
|
|
_mergeSort(list, compare, target);
|
|
_mergeSort(list, compare, list);
|
|
_mergeSort(target, compare, target);
|
|
_mergeSort(target, compare, list);
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_ELEMENT, 5, 10),
|
|
]);
|
|
|
|
var body = AstFinder.getTopLevelFunction(unit, '_mergeSort')
|
|
.functionExpression
|
|
.body as BlockFunctionBody;
|
|
var stmts = body.block.statements.cast<ExpressionStatement>();
|
|
for (ExpressionStatement stmt in stmts) {
|
|
var invoke = stmt.expression as MethodInvocation;
|
|
assertInvokeType(
|
|
invoke, 'void Function(List<T>, int Function(T, T), List<T>)');
|
|
}
|
|
}
|
|
|
|
test_inference_simplePolymorphicRecursion_simple() async {
|
|
// Regression test for https://github.com/dart-lang/sdk/issues/30980
|
|
// Check that inference works properly when inferring the type argument
|
|
// for a self-recursive call with a simple type parameter
|
|
var code = r'''
|
|
void _mergeSort<T>(T list, int compare(T a, T b), T target) {
|
|
_mergeSort(list, compare, target);
|
|
_mergeSort(list, compare, list);
|
|
_mergeSort(target, compare, target);
|
|
_mergeSort(target, compare, list);
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_ELEMENT, 5, 10),
|
|
]);
|
|
|
|
var body = AstFinder.getTopLevelFunction(unit, '_mergeSort')
|
|
.functionExpression
|
|
.body as BlockFunctionBody;
|
|
var stmts = body.block.statements.cast<ExpressionStatement>();
|
|
for (ExpressionStatement stmt in stmts) {
|
|
var invoke = stmt.expression as MethodInvocation;
|
|
assertInvokeType(invoke, 'void Function(T, int Function(T, T), T)');
|
|
}
|
|
}
|
|
|
|
test_inferGenericInstantiation() async {
|
|
// Verify that we don't infer '?` when we instantiate a generic function.
|
|
var code = r'''
|
|
T f<T>(T x(T t)) => x(null);
|
|
S g<S>(S s) => s;
|
|
test() {
|
|
var h = f(g);
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 61, 1),
|
|
]);
|
|
|
|
var h = (AstFinder.getStatementsInTopLevelFunction(unit, "test")[0]
|
|
as VariableDeclarationStatement)
|
|
.variables
|
|
.variables[0];
|
|
_isDynamic(h.declaredElement!.type);
|
|
var fCall = h.initializer as MethodInvocation;
|
|
assertInvokeType(fCall, 'dynamic Function(dynamic Function(dynamic))');
|
|
var g = fCall.argumentList.arguments[0];
|
|
assertType(g.staticType, 'dynamic Function(dynamic)');
|
|
}
|
|
|
|
test_inferGenericInstantiation2() async {
|
|
// Verify the behavior when we cannot infer an instantiation due to invalid
|
|
// constraints from an outer generic method.
|
|
var code = r'''
|
|
T max<T extends num>(T x, T y) => x < y ? y : x;
|
|
abstract class Iterable<T> {
|
|
T get first;
|
|
S fold<S>(S s, S f(S s, T t));
|
|
}
|
|
num test(Iterable values) => values.fold(values.first as num, max);
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(CompileTimeErrorCode.COULD_NOT_INFER, 190, 3),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 190, 3),
|
|
]);
|
|
|
|
var fold = (AstFinder.getTopLevelFunction(unit, 'test')
|
|
.functionExpression
|
|
.body as ExpressionFunctionBody)
|
|
.expression as MethodInvocation;
|
|
assertInvokeType(fold, 'num Function(num, num Function(num, dynamic))');
|
|
var max = fold.argumentList.arguments[1];
|
|
// TODO(jmesserly): arguably num Function(num, num) is better here.
|
|
assertType(max.staticType, 'dynamic Function(dynamic, dynamic)');
|
|
}
|
|
|
|
test_inferredFieldDeclaration_propagation() async {
|
|
// Regression test for https://github.com/dart-lang/sdk/issues/25546
|
|
String code = r'''
|
|
abstract class A {
|
|
Map<int, List<int>> get map;
|
|
}
|
|
class B extends A {
|
|
var map = { 42: [] };
|
|
}
|
|
class C extends A {
|
|
get map => { 43: [] };
|
|
}
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
|
|
Asserter<InterfaceType> assertListOfInt = _isListOf(_isInt);
|
|
Asserter<InterfaceType> assertMapOfIntToListOfInt = _isMapOf(
|
|
_isInt, (DartType type) => assertListOfInt(type as InterfaceType));
|
|
|
|
VariableDeclaration mapB = AstFinder.getFieldInClass(unit, "B", "map");
|
|
MethodDeclaration mapC = AstFinder.getMethodInClass(unit, "C", "map");
|
|
assertMapOfIntToListOfInt(mapB.declaredElement!.type as InterfaceType);
|
|
assertMapOfIntToListOfInt(
|
|
mapC.declaredElement!.returnType as InterfaceType);
|
|
|
|
var mapLiteralB = mapB.initializer as SetOrMapLiteral;
|
|
var mapLiteralC =
|
|
(mapC.body as ExpressionFunctionBody).expression as SetOrMapLiteral;
|
|
assertMapOfIntToListOfInt(mapLiteralB.staticType as InterfaceType);
|
|
assertMapOfIntToListOfInt(mapLiteralC.staticType as InterfaceType);
|
|
|
|
var listLiteralB =
|
|
(mapLiteralB.elements[0] as MapLiteralEntry).value as ListLiteral;
|
|
var listLiteralC =
|
|
(mapLiteralC.elements[0] as MapLiteralEntry).value as ListLiteral;
|
|
assertListOfInt(listLiteralB.staticType as InterfaceType);
|
|
assertListOfInt(listLiteralC.staticType as InterfaceType);
|
|
}
|
|
|
|
test_instanceCreation() async {
|
|
String code = r'''
|
|
class A<S, T> {
|
|
S x;
|
|
T y;
|
|
A(this.x, this.y);
|
|
A.named(this.x, this.y);
|
|
}
|
|
|
|
class B<S, T> extends A<T, S> {
|
|
B(S y, T x) : super(x, y);
|
|
B.named(S y, T x) : super.named(x, y);
|
|
}
|
|
|
|
class C<S> extends B<S, S> {
|
|
C(S a) : super(a, a);
|
|
C.named(S a) : super.named(a, a);
|
|
}
|
|
|
|
class D<S, T> extends B<T, int> {
|
|
D(T a) : super(a, 3);
|
|
D.named(T a) : super.named(a, 3);
|
|
}
|
|
|
|
class E<S, T> extends A<C<S>, T> {
|
|
E(T a) : super(null, a);
|
|
}
|
|
|
|
class F<S, T> extends A<S, T> {
|
|
F(S x, T y, {List<S> a, List<T> b}) : super(x, y);
|
|
F.named(S x, T y, [S a, T b]) : super(a, b);
|
|
}
|
|
|
|
void test0() {
|
|
A<int, String> a0 = new A(3, "hello");
|
|
A<int, String> a1 = new A.named(3, "hello");
|
|
A<int, String> a2 = new A<int, String>(3, "hello");
|
|
A<int, String> a3 = new A<int, String>.named(3, "hello");
|
|
A<int, String> a4 = new A<int, dynamic>(3, "hello");
|
|
A<int, String> a5 = new A<dynamic, dynamic>.named(3, "hello");
|
|
}
|
|
void test1() {
|
|
A<int, String> a0 = new A("hello", 3);
|
|
A<int, String> a1 = new A.named("hello", 3);
|
|
}
|
|
void test2() {
|
|
A<int, String> a0 = new B("hello", 3);
|
|
A<int, String> a1 = new B.named("hello", 3);
|
|
A<int, String> a2 = new B<String, int>("hello", 3);
|
|
A<int, String> a3 = new B<String, int>.named("hello", 3);
|
|
A<int, String> a4 = new B<String, dynamic>("hello", 3);
|
|
A<int, String> a5 = new B<dynamic, dynamic>.named("hello", 3);
|
|
}
|
|
void test3() {
|
|
A<int, String> a0 = new B(3, "hello");
|
|
A<int, String> a1 = new B.named(3, "hello");
|
|
}
|
|
void test4() {
|
|
A<int, int> a0 = new C(3);
|
|
A<int, int> a1 = new C.named(3);
|
|
A<int, int> a2 = new C<int>(3);
|
|
A<int, int> a3 = new C<int>.named(3);
|
|
A<int, int> a4 = new C<dynamic>(3);
|
|
A<int, int> a5 = new C<dynamic>.named(3);
|
|
}
|
|
void test5() {
|
|
A<int, int> a0 = new C("hello");
|
|
A<int, int> a1 = new C.named("hello");
|
|
}
|
|
void test6() {
|
|
A<int, String> a0 = new D("hello");
|
|
A<int, String> a1 = new D.named("hello");
|
|
A<int, String> a2 = new D<int, String>("hello");
|
|
A<int, String> a3 = new D<String, String>.named("hello");
|
|
A<int, String> a4 = new D<num, dynamic>("hello");
|
|
A<int, String> a5 = new D<dynamic, dynamic>.named("hello");
|
|
}
|
|
void test7() {
|
|
A<int, String> a0 = new D(3);
|
|
A<int, String> a1 = new D.named(3);
|
|
}
|
|
void test8() {
|
|
A<C<int>, String> a0 = new E("hello");
|
|
}
|
|
void test9() { // Check named and optional arguments
|
|
A<int, String> a0 = new F(3, "hello", a: [3], b: ["hello"]);
|
|
A<int, String> a1 = new F(3, "hello", a: ["hello"], b:[3]);
|
|
A<int, String> a2 = new F.named(3, "hello", 3, "hello");
|
|
A<int, String> a3 = new F.named(3, "hello");
|
|
A<int, String> a4 = new F.named(3, "hello", "hello", 3);
|
|
A<int, String> a5 = new F.named(3, "hello", "hello");
|
|
}''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 769, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 816, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 869, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 929, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 995, 2),
|
|
error(CompileTimeErrorCode.INVALID_CAST_NEW_EXPR, 1000, 31),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 1056, 2),
|
|
error(CompileTimeErrorCode.INVALID_CAST_NEW_EXPR, 1061, 41),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 1157, 2),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 1168, 7),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 1177, 1),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 1204, 2),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 1221, 7),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 1230, 1),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 1286, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 1333, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 1386, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 1446, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 1512, 2),
|
|
error(CompileTimeErrorCode.INVALID_ASSIGNMENT, 1517, 34),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 1576, 2),
|
|
error(CompileTimeErrorCode.INVALID_ASSIGNMENT, 1581, 41),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 1676, 2),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 1687, 1),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 1690, 7),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 1723, 2),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 1740, 1),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 1743, 7),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 1802, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 1837, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 1878, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 1918, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 1964, 2),
|
|
error(CompileTimeErrorCode.INVALID_ASSIGNMENT, 1969, 17),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 2008, 2),
|
|
error(CompileTimeErrorCode.INVALID_ASSIGNMENT, 2013, 23),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 2087, 2),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 2098, 7),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 2128, 2),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 2145, 7),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 2208, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 2252, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 2302, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 2359, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 2425, 2),
|
|
error(CompileTimeErrorCode.INVALID_ASSIGNMENT, 2430, 28),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 2483, 2),
|
|
error(CompileTimeErrorCode.INVALID_ASSIGNMENT, 2488, 38),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 2580, 2),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 2591, 1),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 2618, 2),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 2635, 1),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 2694, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 2805, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 2874, 2),
|
|
error(CompileTimeErrorCode.LIST_ELEMENT_TYPE_NOT_ASSIGNABLE, 2901, 7),
|
|
error(CompileTimeErrorCode.LIST_ELEMENT_TYPE_NOT_ASSIGNABLE, 2914, 1),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 2942, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 3007, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 3060, 2),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 3089, 7),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 3098, 1),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 3125, 2),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 3154, 7),
|
|
]);
|
|
|
|
Expression rhs(AstNode stmt) {
|
|
stmt as VariableDeclarationStatement;
|
|
VariableDeclaration decl = stmt.variables.variables[0];
|
|
Expression exp = decl.initializer!;
|
|
return exp;
|
|
}
|
|
|
|
void hasType(Asserter<DartType> assertion, Expression exp) =>
|
|
assertion(exp.typeOrThrow);
|
|
|
|
Element elementA = AstFinder.getClass(unit, "A").declaredElement!;
|
|
Element elementB = AstFinder.getClass(unit, "B").declaredElement!;
|
|
Element elementC = AstFinder.getClass(unit, "C").declaredElement!;
|
|
Element elementD = AstFinder.getClass(unit, "D").declaredElement!;
|
|
Element elementE = AstFinder.getClass(unit, "E").declaredElement!;
|
|
Element elementF = AstFinder.getClass(unit, "F").declaredElement!;
|
|
|
|
AsserterBuilder<List<Asserter<DartType>>, DartType> assertAOf =
|
|
_isInstantiationOf(_hasElement(elementA));
|
|
AsserterBuilder<List<Asserter<DartType>>, DartType> assertBOf =
|
|
_isInstantiationOf(_hasElement(elementB));
|
|
AsserterBuilder<List<Asserter<DartType>>, DartType> assertCOf =
|
|
_isInstantiationOf(_hasElement(elementC));
|
|
AsserterBuilder<List<Asserter<DartType>>, DartType> assertDOf =
|
|
_isInstantiationOf(_hasElement(elementD));
|
|
AsserterBuilder<List<Asserter<DartType>>, DartType> assertEOf =
|
|
_isInstantiationOf(_hasElement(elementE));
|
|
AsserterBuilder<List<Asserter<DartType>>, DartType> assertFOf =
|
|
_isInstantiationOf(_hasElement(elementF));
|
|
|
|
{
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "test0")
|
|
.cast<VariableDeclarationStatement>();
|
|
|
|
hasType(assertAOf([_isInt, _isString]), rhs(statements[0]));
|
|
hasType(assertAOf([_isInt, _isString]), rhs(statements[0]));
|
|
hasType(assertAOf([_isInt, _isString]), rhs(statements[1]));
|
|
hasType(assertAOf([_isInt, _isString]), rhs(statements[2]));
|
|
hasType(assertAOf([_isInt, _isString]), rhs(statements[3]));
|
|
hasType(assertAOf([_isInt, _isDynamic]), rhs(statements[4]));
|
|
hasType(assertAOf([_isDynamic, _isDynamic]), rhs(statements[5]));
|
|
}
|
|
|
|
{
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "test1")
|
|
.cast<VariableDeclarationStatement>();
|
|
hasType(assertAOf([_isInt, _isString]), rhs(statements[0]));
|
|
hasType(assertAOf([_isInt, _isString]), rhs(statements[1]));
|
|
}
|
|
|
|
{
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "test2")
|
|
.cast<VariableDeclarationStatement>();
|
|
hasType(assertBOf([_isString, _isInt]), rhs(statements[0]));
|
|
hasType(assertBOf([_isString, _isInt]), rhs(statements[1]));
|
|
hasType(assertBOf([_isString, _isInt]), rhs(statements[2]));
|
|
hasType(assertBOf([_isString, _isInt]), rhs(statements[3]));
|
|
hasType(assertBOf([_isString, _isDynamic]), rhs(statements[4]));
|
|
hasType(assertBOf([_isDynamic, _isDynamic]), rhs(statements[5]));
|
|
}
|
|
|
|
{
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "test3")
|
|
.cast<VariableDeclarationStatement>();
|
|
hasType(assertBOf([_isString, _isInt]), rhs(statements[0]));
|
|
hasType(assertBOf([_isString, _isInt]), rhs(statements[1]));
|
|
}
|
|
|
|
{
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "test4")
|
|
.cast<VariableDeclarationStatement>();
|
|
hasType(assertCOf([_isInt]), rhs(statements[0]));
|
|
hasType(assertCOf([_isInt]), rhs(statements[1]));
|
|
hasType(assertCOf([_isInt]), rhs(statements[2]));
|
|
hasType(assertCOf([_isInt]), rhs(statements[3]));
|
|
hasType(assertCOf([_isDynamic]), rhs(statements[4]));
|
|
hasType(assertCOf([_isDynamic]), rhs(statements[5]));
|
|
}
|
|
|
|
{
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "test5")
|
|
.cast<VariableDeclarationStatement>();
|
|
hasType(assertCOf([_isInt]), rhs(statements[0]));
|
|
hasType(assertCOf([_isInt]), rhs(statements[1]));
|
|
}
|
|
|
|
{
|
|
// The first type parameter is not constrained by the
|
|
// context. We could choose a tighter type, but currently
|
|
// we just use dynamic.
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "test6")
|
|
.cast<VariableDeclarationStatement>();
|
|
hasType(assertDOf([_isDynamic, _isString]), rhs(statements[0]));
|
|
hasType(assertDOf([_isDynamic, _isString]), rhs(statements[1]));
|
|
hasType(assertDOf([_isInt, _isString]), rhs(statements[2]));
|
|
hasType(assertDOf([_isString, _isString]), rhs(statements[3]));
|
|
hasType(assertDOf([_isNum, _isDynamic]), rhs(statements[4]));
|
|
hasType(assertDOf([_isDynamic, _isDynamic]), rhs(statements[5]));
|
|
}
|
|
|
|
{
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "test7")
|
|
.cast<VariableDeclarationStatement>();
|
|
hasType(assertDOf([_isDynamic, _isString]), rhs(statements[0]));
|
|
hasType(assertDOf([_isDynamic, _isString]), rhs(statements[1]));
|
|
}
|
|
|
|
{
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "test8")
|
|
.cast<VariableDeclarationStatement>();
|
|
hasType(assertEOf([_isInt, _isString]), rhs(statements[0]));
|
|
}
|
|
|
|
{
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "test9")
|
|
.cast<VariableDeclarationStatement>();
|
|
hasType(assertFOf([_isInt, _isString]), rhs(statements[0]));
|
|
hasType(assertFOf([_isInt, _isString]), rhs(statements[1]));
|
|
hasType(assertFOf([_isInt, _isString]), rhs(statements[2]));
|
|
hasType(assertFOf([_isInt, _isString]), rhs(statements[3]));
|
|
hasType(assertFOf([_isInt, _isString]), rhs(statements[4]));
|
|
hasType(assertFOf([_isInt, _isString]), rhs(statements[5]));
|
|
}
|
|
}
|
|
|
|
test_listLiteral_nested() async {
|
|
String code = r'''
|
|
void main () {
|
|
List<List<int>> l0 = [[]];
|
|
Iterable<List<int>> l1 = [[3]];
|
|
Iterable<List<int>> l2 = [[3], [4]];
|
|
List<List<int>> l3 = [["hello", 3], []];
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 45, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 84, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 124, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 165, 2),
|
|
error(CompileTimeErrorCode.LIST_ELEMENT_TYPE_NOT_ASSIGNABLE, 172, 7),
|
|
]);
|
|
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "main");
|
|
ListLiteral literal(int i) {
|
|
var stmt = statements[i] as VariableDeclarationStatement;
|
|
VariableDeclaration decl = stmt.variables.variables[0];
|
|
var exp = decl.initializer as ListLiteral;
|
|
return exp;
|
|
}
|
|
|
|
Asserter<InterfaceType> assertListOfInt = _isListOf(_isInt);
|
|
Asserter<InterfaceType> assertListOfListOfInt =
|
|
_isListOf((DartType type) => assertListOfInt(type as InterfaceType));
|
|
|
|
assertListOfListOfInt(literal(0).staticType as InterfaceType);
|
|
assertListOfListOfInt(literal(1).staticType as InterfaceType);
|
|
assertListOfListOfInt(literal(2).staticType as InterfaceType);
|
|
assertListOfListOfInt(literal(3).staticType as InterfaceType);
|
|
|
|
assertListOfInt(
|
|
(literal(1).elements[0] as Expression).staticType as InterfaceType);
|
|
assertListOfInt(
|
|
(literal(2).elements[0] as Expression).staticType as InterfaceType);
|
|
assertListOfInt(
|
|
(literal(3).elements[0] as Expression).staticType as InterfaceType);
|
|
}
|
|
|
|
test_listLiteral_simple() async {
|
|
String code = r'''
|
|
void main () {
|
|
List<int> l0 = [];
|
|
List<int> l1 = [3];
|
|
List<int> l2 = ["hello"];
|
|
List<int> l3 = ["hello", 3];
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 39, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 66, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 94, 2),
|
|
error(CompileTimeErrorCode.LIST_ELEMENT_TYPE_NOT_ASSIGNABLE, 100, 7),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 128, 2),
|
|
error(CompileTimeErrorCode.LIST_ELEMENT_TYPE_NOT_ASSIGNABLE, 134, 7),
|
|
]);
|
|
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "main");
|
|
DartType literal(int i) {
|
|
var stmt = statements[i] as VariableDeclarationStatement;
|
|
VariableDeclaration decl = stmt.variables.variables[0];
|
|
var exp = decl.initializer as ListLiteral;
|
|
return exp.typeOrThrow;
|
|
}
|
|
|
|
Asserter<InterfaceType> assertListOfInt = _isListOf(_isInt);
|
|
|
|
assertListOfInt(literal(0) as InterfaceType);
|
|
assertListOfInt(literal(1) as InterfaceType);
|
|
assertListOfInt(literal(2) as InterfaceType);
|
|
assertListOfInt(literal(3) as InterfaceType);
|
|
}
|
|
|
|
test_listLiteral_simple_const() async {
|
|
String code = r'''
|
|
void main () {
|
|
const List<int> c0 = const [];
|
|
const List<int> c1 = const [3];
|
|
const List<int> c2 = const ["hello"];
|
|
const List<int> c3 = const ["hello", 3];
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 45, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 84, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 124, 2),
|
|
error(CompileTimeErrorCode.LIST_ELEMENT_TYPE_NOT_ASSIGNABLE, 136, 7),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 170, 2),
|
|
error(CompileTimeErrorCode.LIST_ELEMENT_TYPE_NOT_ASSIGNABLE, 182, 7),
|
|
]);
|
|
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "main");
|
|
DartType literal(int i) {
|
|
var stmt = statements[i] as VariableDeclarationStatement;
|
|
VariableDeclaration decl = stmt.variables.variables[0];
|
|
var exp = decl.initializer as ListLiteral;
|
|
return exp.typeOrThrow;
|
|
}
|
|
|
|
Asserter<InterfaceType> assertListOfInt = _isListOf(_isInt);
|
|
|
|
assertListOfInt(literal(0) as InterfaceType);
|
|
assertListOfInt(literal(1) as InterfaceType);
|
|
assertListOfInt(literal(2) as InterfaceType);
|
|
assertListOfInt(literal(3) as InterfaceType);
|
|
}
|
|
|
|
test_listLiteral_simple_disabled() async {
|
|
String code = r'''
|
|
void main () {
|
|
List<int> l0 = <num>[];
|
|
List<int> l1 = <num>[3];
|
|
List<int> l2 = <String>["hello"];
|
|
List<int> l3 = <dynamic>["hello", 3];
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 39, 2),
|
|
error(CompileTimeErrorCode.INVALID_CAST_LITERAL_LIST, 44, 7),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 71, 2),
|
|
error(CompileTimeErrorCode.INVALID_CAST_LITERAL_LIST, 76, 8),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 104, 2),
|
|
error(CompileTimeErrorCode.INVALID_ASSIGNMENT, 109, 17),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 146, 2),
|
|
error(CompileTimeErrorCode.INVALID_CAST_LITERAL_LIST, 151, 21),
|
|
]);
|
|
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "main");
|
|
DartType literal(int i) {
|
|
var stmt = statements[i] as VariableDeclarationStatement;
|
|
VariableDeclaration decl = stmt.variables.variables[0];
|
|
var exp = decl.initializer as ListLiteral;
|
|
return exp.typeOrThrow;
|
|
}
|
|
|
|
_isListOf(_isNum)(literal(0) as InterfaceType);
|
|
_isListOf(_isNum)(literal(1) as InterfaceType);
|
|
_isListOf(_isString)(literal(2) as InterfaceType);
|
|
_isListOf(_isDynamic)(literal(3) as InterfaceType);
|
|
}
|
|
|
|
test_listLiteral_simple_subtype() async {
|
|
String code = r'''
|
|
void main () {
|
|
Iterable<int> l0 = [];
|
|
Iterable<int> l1 = [3];
|
|
Iterable<int> l2 = ["hello"];
|
|
Iterable<int> l3 = ["hello", 3];
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 43, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 74, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 106, 2),
|
|
error(CompileTimeErrorCode.LIST_ELEMENT_TYPE_NOT_ASSIGNABLE, 112, 7),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 144, 2),
|
|
error(CompileTimeErrorCode.LIST_ELEMENT_TYPE_NOT_ASSIGNABLE, 150, 7),
|
|
]);
|
|
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "main");
|
|
InterfaceType literal(int i) {
|
|
var stmt = statements[i] as VariableDeclarationStatement;
|
|
VariableDeclaration decl = stmt.variables.variables[0];
|
|
var exp = decl.initializer as ListLiteral;
|
|
return exp.staticType as InterfaceType;
|
|
}
|
|
|
|
Asserter<InterfaceType> assertListOfInt = _isListOf(_isInt);
|
|
|
|
assertListOfInt(literal(0));
|
|
assertListOfInt(literal(1));
|
|
assertListOfInt(literal(2));
|
|
assertListOfInt(literal(3));
|
|
}
|
|
|
|
test_mapLiteral_nested() async {
|
|
String code = r'''
|
|
void main () {
|
|
Map<int, List<String>> l0 = {};
|
|
Map<int, List<String>> l1 = {3: ["hello"]};
|
|
Map<int, List<String>> l2 = {"hello": ["hello"]};
|
|
Map<int, List<String>> l3 = {3: [3]};
|
|
Map<int, List<String>> l4 = {3:["hello"], "hello": [3]};
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 52, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 92, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 144, 2),
|
|
error(CompileTimeErrorCode.MAP_KEY_TYPE_NOT_ASSIGNABLE, 150, 7),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 202, 2),
|
|
error(CompileTimeErrorCode.LIST_ELEMENT_TYPE_NOT_ASSIGNABLE, 212, 1),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 248, 2),
|
|
error(CompileTimeErrorCode.MAP_KEY_TYPE_NOT_ASSIGNABLE, 267, 7),
|
|
error(CompileTimeErrorCode.LIST_ELEMENT_TYPE_NOT_ASSIGNABLE, 277, 1),
|
|
]);
|
|
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "main");
|
|
SetOrMapLiteral literal(int i) {
|
|
var stmt = statements[i] as VariableDeclarationStatement;
|
|
VariableDeclaration decl = stmt.variables.variables[0];
|
|
var exp = decl.initializer as SetOrMapLiteral;
|
|
return exp;
|
|
}
|
|
|
|
Asserter<InterfaceType> assertListOfString = _isListOf(_isString);
|
|
Asserter<InterfaceType> assertMapOfIntToListOfString = _isMapOf(
|
|
_isInt, (DartType type) => assertListOfString(type as InterfaceType));
|
|
|
|
assertMapOfIntToListOfString(literal(0).staticType as InterfaceType);
|
|
assertMapOfIntToListOfString(literal(1).staticType as InterfaceType);
|
|
assertMapOfIntToListOfString(literal(2).staticType as InterfaceType);
|
|
assertMapOfIntToListOfString(literal(3).staticType as InterfaceType);
|
|
assertMapOfIntToListOfString(literal(4).staticType as InterfaceType);
|
|
|
|
assertListOfString((literal(1).elements[0] as MapLiteralEntry)
|
|
.value
|
|
.staticType as InterfaceType);
|
|
assertListOfString((literal(2).elements[0] as MapLiteralEntry)
|
|
.value
|
|
.staticType as InterfaceType);
|
|
assertListOfString((literal(3).elements[0] as MapLiteralEntry)
|
|
.value
|
|
.staticType as InterfaceType);
|
|
assertListOfString((literal(4).elements[0] as MapLiteralEntry)
|
|
.value
|
|
.staticType as InterfaceType);
|
|
}
|
|
|
|
test_mapLiteral_simple() async {
|
|
String code = r'''
|
|
void main () {
|
|
Map<int, String> l0 = {};
|
|
Map<int, String> l1 = {3: "hello"};
|
|
Map<int, String> l2 = {"hello": "hello"};
|
|
Map<int, String> l3 = {3: 3};
|
|
Map<int, String> l4 = {3:"hello", "hello": 3};
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 46, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 80, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 124, 2),
|
|
error(CompileTimeErrorCode.MAP_KEY_TYPE_NOT_ASSIGNABLE, 130, 7),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 174, 2),
|
|
error(CompileTimeErrorCode.MAP_VALUE_TYPE_NOT_ASSIGNABLE, 183, 1),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 212, 2),
|
|
error(CompileTimeErrorCode.MAP_KEY_TYPE_NOT_ASSIGNABLE, 229, 7),
|
|
error(CompileTimeErrorCode.MAP_VALUE_TYPE_NOT_ASSIGNABLE, 238, 1),
|
|
]);
|
|
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "main");
|
|
InterfaceType literal(int i) {
|
|
var stmt = statements[i] as VariableDeclarationStatement;
|
|
VariableDeclaration decl = stmt.variables.variables[0];
|
|
var exp = decl.initializer as SetOrMapLiteral;
|
|
return exp.staticType as InterfaceType;
|
|
}
|
|
|
|
Asserter<InterfaceType> assertMapOfIntToString =
|
|
_isMapOf(_isInt, _isString);
|
|
|
|
assertMapOfIntToString(literal(0));
|
|
assertMapOfIntToString(literal(1));
|
|
assertMapOfIntToString(literal(2));
|
|
assertMapOfIntToString(literal(3));
|
|
}
|
|
|
|
test_mapLiteral_simple_disabled() async {
|
|
String code = r'''
|
|
void main () {
|
|
Map<int, String> l0 = <int, dynamic>{};
|
|
Map<int, String> l1 = <int, dynamic>{3: "hello"};
|
|
Map<int, String> l2 = <int, dynamic>{"hello": "hello"};
|
|
Map<int, String> l3 = <int, dynamic>{3: 3};
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 46, 2),
|
|
error(CompileTimeErrorCode.INVALID_CAST_LITERAL_MAP, 51, 16),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 94, 2),
|
|
error(CompileTimeErrorCode.INVALID_CAST_LITERAL_MAP, 99, 26),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 152, 2),
|
|
error(CompileTimeErrorCode.INVALID_CAST_LITERAL_MAP, 157, 32),
|
|
error(CompileTimeErrorCode.MAP_KEY_TYPE_NOT_ASSIGNABLE, 172, 7),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 216, 2),
|
|
error(CompileTimeErrorCode.INVALID_CAST_LITERAL_MAP, 221, 20),
|
|
]);
|
|
|
|
List<Statement> statements =
|
|
AstFinder.getStatementsInTopLevelFunction(unit, "main");
|
|
InterfaceType literal(int i) {
|
|
var stmt = statements[i] as VariableDeclarationStatement;
|
|
VariableDeclaration decl = stmt.variables.variables[0];
|
|
var exp = decl.initializer as SetOrMapLiteral;
|
|
return exp.staticType as InterfaceType;
|
|
}
|
|
|
|
Asserter<InterfaceType> assertMapOfIntToDynamic =
|
|
_isMapOf(_isInt, _isDynamic);
|
|
|
|
assertMapOfIntToDynamic(literal(0));
|
|
assertMapOfIntToDynamic(literal(1));
|
|
assertMapOfIntToDynamic(literal(2));
|
|
assertMapOfIntToDynamic(literal(3));
|
|
}
|
|
|
|
test_methodDeclaration_body_propagation() async {
|
|
String code = r'''
|
|
class A {
|
|
List<String> m0(int x) => ["hello"];
|
|
List<String> m1(int x) {return [3];}
|
|
}
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(CompileTimeErrorCode.LIST_ELEMENT_TYPE_NOT_ASSIGNABLE, 101, 1),
|
|
]);
|
|
|
|
Expression methodReturnValue(String methodName) {
|
|
MethodDeclaration method =
|
|
AstFinder.getMethodInClass(unit, "A", methodName);
|
|
FunctionBody body = method.body;
|
|
if (body is ExpressionFunctionBody) {
|
|
return body.expression;
|
|
} else {
|
|
Statement stmt = (body as BlockFunctionBody).block.statements[0];
|
|
return (stmt as ReturnStatement).expression!;
|
|
}
|
|
}
|
|
|
|
Asserter<InterfaceType> assertListOfString = _isListOf(_isString);
|
|
assertListOfString(methodReturnValue("m0").staticType as InterfaceType);
|
|
assertListOfString(methodReturnValue("m1").staticType as InterfaceType);
|
|
}
|
|
|
|
test_partialTypes1() async {
|
|
// Test that downwards inference with a partial type
|
|
// correctly uses the partial information to fill in subterm
|
|
// types
|
|
String code = r'''
|
|
typedef To Func1<From, To>(From x);
|
|
S f<S, T>(Func1<S, T> g) => null;
|
|
String test() => f((l) => l.length);
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
|
|
FunctionDeclaration test = AstFinder.getTopLevelFunction(unit, "test");
|
|
var body = test.functionExpression.body as ExpressionFunctionBody;
|
|
_isString(body.expression.typeOrThrow);
|
|
var invoke = body.expression as MethodInvocation;
|
|
var function = invoke.argumentList.arguments[0] as FunctionExpression;
|
|
ExecutableElement f0 = function.declaredElement!;
|
|
FunctionType type = f0.type;
|
|
_isFunction2Of(_isString, _isInt)(type);
|
|
}
|
|
|
|
test_pinning_multipleConstraints1() async {
|
|
// Test that downwards inference with two different downwards covariant
|
|
// constraints on the same parameter correctly fails to infer when
|
|
// the types do not share a common subtype
|
|
String code = r'''
|
|
class A<S, T> {
|
|
S s;
|
|
T t;
|
|
}
|
|
class B<S> extends A<S, S> { B(S s); }
|
|
A<int, String> test() => new B(3);
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(CompileTimeErrorCode.INVALID_CAST_LITERAL, 126, 1),
|
|
]);
|
|
|
|
FunctionDeclaration test = AstFinder.getTopLevelFunction(unit, "test");
|
|
var body = test.functionExpression.body as ExpressionFunctionBody;
|
|
DartType type = body.expression.typeOrThrow;
|
|
|
|
Element elementB = AstFinder.getClass(unit, "B").declaredElement!;
|
|
|
|
_isInstantiationOf(_hasElement(elementB))([_isNull])(type);
|
|
}
|
|
|
|
test_pinning_multipleConstraints2() async {
|
|
// Test that downwards inference with two identical downwards covariant
|
|
// constraints on the same parameter correctly infers and pins the type
|
|
String code = r'''
|
|
class A<S, T> {
|
|
S s;
|
|
T t;
|
|
}
|
|
class B<S> extends A<S, S> { B(S s); }
|
|
A<num, num> test() => new B(3);
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
|
|
FunctionDeclaration test = AstFinder.getTopLevelFunction(unit, "test");
|
|
var body = test.functionExpression.body as ExpressionFunctionBody;
|
|
DartType type = body.expression.typeOrThrow;
|
|
|
|
Element elementB = AstFinder.getClass(unit, "B").declaredElement!;
|
|
|
|
_isInstantiationOf(_hasElement(elementB))([_isNum])(type);
|
|
}
|
|
|
|
test_pinning_multipleConstraints3() async {
|
|
// Test that downwards inference with two different downwards covariant
|
|
// constraints on the same parameter correctly fails to infer when
|
|
// the types do not share a common subtype, but do share a common supertype
|
|
String code = r'''
|
|
class A<S, T> {
|
|
S s;
|
|
T t;
|
|
}
|
|
class B<S> extends A<S, S> { B(S s); }
|
|
A<int, double> test() => new B(3);
|
|
''';
|
|
await assertErrorsInCode(code, [
|
|
error(CompileTimeErrorCode.INVALID_CAST_LITERAL, 126, 1),
|
|
]);
|
|
|
|
FunctionDeclaration test = AstFinder.getTopLevelFunction(unit, "test");
|
|
var body = test.functionExpression.body as ExpressionFunctionBody;
|
|
DartType type = body.expression.typeOrThrow;
|
|
|
|
Element elementB = AstFinder.getClass(unit, "B").declaredElement!;
|
|
|
|
_isInstantiationOf(_hasElement(elementB))([_isNull])(type);
|
|
}
|
|
|
|
test_pinning_multipleConstraints4() async {
|
|
// Test that downwards inference with two subtype related downwards
|
|
// covariant constraints on the same parameter correctly infers and pins
|
|
// the type
|
|
String code = r'''
|
|
class A<S, T> {
|
|
S s;
|
|
T t;
|
|
}
|
|
class B<S> extends A<S, S> {}
|
|
A<int, num> test() => new B();
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
|
|
FunctionDeclaration test = AstFinder.getTopLevelFunction(unit, "test");
|
|
var body = test.functionExpression.body as ExpressionFunctionBody;
|
|
DartType type = body.expression.typeOrThrow;
|
|
|
|
Element elementB = AstFinder.getClass(unit, "B").declaredElement!;
|
|
|
|
_isInstantiationOf(_hasElement(elementB))([_isInt])(type);
|
|
}
|
|
|
|
test_pinning_multipleConstraints_contravariant1() async {
|
|
// Test that downwards inference with two different downwards contravariant
|
|
// constraints on the same parameter chooses the upper bound
|
|
// when the only supertype is Object
|
|
String code = r'''
|
|
class A<S, T> {
|
|
S s;
|
|
T t;
|
|
}
|
|
class B<S> extends A<S, S> {}
|
|
typedef void Contra1<T>(T x);
|
|
Contra1<A<S, S>> mkA<S>() => (A<S, S> x) {};
|
|
Contra1<A<int, String>> test() => mkA();
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
|
|
FunctionDeclaration test = AstFinder.getTopLevelFunction(unit, "test");
|
|
var body = test.functionExpression.body as ExpressionFunctionBody;
|
|
var functionType = body.expression.staticType as FunctionType;
|
|
DartType type = functionType.normalParameterTypes[0];
|
|
|
|
Element elementA = AstFinder.getClass(unit, "A").declaredElement!;
|
|
|
|
_isInstantiationOf(_hasElement(elementA))([_isObject, _isObject])(type);
|
|
}
|
|
|
|
test_pinning_multipleConstraints_contravariant2() async {
|
|
// Test that downwards inference with two identical downwards contravariant
|
|
// constraints on the same parameter correctly pins the type
|
|
String code = r'''
|
|
class A<S, T> {
|
|
S s;
|
|
T t;
|
|
}
|
|
class B<S> extends A<S, S> {}
|
|
typedef void Contra1<T>(T x);
|
|
Contra1<A<S, S>> mkA<S>() => (A<S, S> x) {};
|
|
Contra1<A<num, num>> test() => mkA();
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
|
|
FunctionDeclaration test = AstFinder.getTopLevelFunction(unit, "test");
|
|
var body = test.functionExpression.body as ExpressionFunctionBody;
|
|
var functionType = body.expression.staticType as FunctionType;
|
|
DartType type = functionType.normalParameterTypes[0];
|
|
|
|
Element elementA = AstFinder.getClass(unit, "A").declaredElement!;
|
|
|
|
_isInstantiationOf(_hasElement(elementA))([_isNum, _isNum])(type);
|
|
}
|
|
|
|
test_pinning_multipleConstraints_contravariant3() async {
|
|
// Test that downwards inference with two different downwards contravariant
|
|
// constraints on the same parameter correctly choose the least upper bound
|
|
// when they share a common supertype
|
|
String code = r'''
|
|
class A<S, T> {
|
|
S s;
|
|
T t;
|
|
}
|
|
class B<S> extends A<S, S> {}
|
|
typedef void Contra1<T>(T x);
|
|
Contra1<A<S, S>> mkA<S>() => (A<S, S> x) {};
|
|
Contra1<A<int, double>> test() => mkA();
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
|
|
FunctionDeclaration test = AstFinder.getTopLevelFunction(unit, "test");
|
|
var body = test.functionExpression.body as ExpressionFunctionBody;
|
|
var functionType = body.expression.staticType as FunctionType;
|
|
DartType type = functionType.normalParameterTypes[0];
|
|
|
|
Element elementA = AstFinder.getClass(unit, "A").declaredElement!;
|
|
|
|
_isInstantiationOf(_hasElement(elementA))([_isNum, _isNum])(type);
|
|
}
|
|
|
|
test_pinning_multipleConstraints_contravariant4() async {
|
|
// Test that downwards inference with two different downwards contravariant
|
|
// constraints on the same parameter correctly choose the least upper bound
|
|
// when one is a subtype of the other
|
|
String code = r'''
|
|
class A<S, T> {
|
|
S s;
|
|
T t;
|
|
}
|
|
class B<S> extends A<S, S> {}
|
|
typedef void Contra1<T>(T x);
|
|
Contra1<A<S, S>> mkA<S>() => (A<S, S> x) {};
|
|
Contra1<A<int, num>> test() => mkA();
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
|
|
FunctionDeclaration test = AstFinder.getTopLevelFunction(unit, "test");
|
|
var body = test.functionExpression.body as ExpressionFunctionBody;
|
|
var functionType = body.expression.staticType as FunctionType;
|
|
DartType type = functionType.normalParameterTypes[0];
|
|
|
|
Element elementA = AstFinder.getClass(unit, "A").declaredElement!;
|
|
|
|
_isInstantiationOf(_hasElement(elementA))([_isNum, _isNum])(type);
|
|
}
|
|
|
|
test_redirectedConstructor_named() async {
|
|
var code = r'''
|
|
class A<T, U> implements B<T, U> {
|
|
A.named();
|
|
}
|
|
|
|
class B<T2, U2> {
|
|
factory B() = A.named;
|
|
}
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
|
|
var b = unit.declarations[1] as ClassDeclaration;
|
|
var bConstructor = b.members[0] as ConstructorDeclaration;
|
|
var redirected = bConstructor.redirectedConstructor as ConstructorName;
|
|
|
|
var typeName = redirected.type;
|
|
assertType(typeName.type, 'A<T2, U2>');
|
|
assertType(typeName.type, 'A<T2, U2>');
|
|
|
|
var constructorMember = redirected.staticElement!;
|
|
expect(
|
|
constructorMember.getDisplayString(withNullability: false),
|
|
'A<T2, U2> A.named()',
|
|
);
|
|
expect(redirected.name!.staticElement, constructorMember);
|
|
}
|
|
|
|
test_redirectedConstructor_self() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class A<T> {
|
|
A();
|
|
factory A.redirected() = A;
|
|
}
|
|
''');
|
|
}
|
|
|
|
test_redirectedConstructor_unnamed() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class A<T, U> implements B<T, U> {
|
|
A();
|
|
}
|
|
|
|
class B<T2, U2> {
|
|
factory B() = A;
|
|
}
|
|
''');
|
|
|
|
var b = result.unit!.declarations[1] as ClassDeclaration;
|
|
var bConstructor = b.members[0] as ConstructorDeclaration;
|
|
var redirected = bConstructor.redirectedConstructor as ConstructorName;
|
|
|
|
var typeName = redirected.type;
|
|
assertType(typeName.type, 'A<T2, U2>');
|
|
assertType(typeName.type, 'A<T2, U2>');
|
|
|
|
expect(redirected.name, isNull);
|
|
expect(
|
|
redirected.staticElement!.getDisplayString(withNullability: false),
|
|
'A<T2, U2> A()',
|
|
);
|
|
}
|
|
|
|
test_redirectingConstructor_propagation() async {
|
|
String code = r'''
|
|
class A {
|
|
A() : this.named([]);
|
|
A.named(List<String> x);
|
|
}
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
|
|
ConstructorDeclaration constructor =
|
|
AstFinder.getConstructorInClass(unit, "A", null);
|
|
var invocation =
|
|
constructor.initializers[0] as RedirectingConstructorInvocation;
|
|
Expression exp = invocation.argumentList.arguments[0];
|
|
_isListOf(_isString)(exp.staticType as InterfaceType);
|
|
}
|
|
|
|
test_returnType_variance1() async {
|
|
// Check that downwards inference correctly pins a type parameter
|
|
// when the parameter is constrained in a contravariant position
|
|
String code = r'''
|
|
typedef To Func1<From, To>(From x);
|
|
Func1<T, String> f<T>(T x) => null;
|
|
Func1<num, String> test() => f(42);
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
|
|
FunctionDeclaration test = AstFinder.getTopLevelFunction(unit, "test");
|
|
var body = test.functionExpression.body as ExpressionFunctionBody;
|
|
var invoke = body.expression as MethodInvocation;
|
|
_isFunction2Of(_isNum, _isFunction2Of(_isNum, _isString))(
|
|
invoke.staticInvokeType!);
|
|
}
|
|
|
|
test_returnType_variance2() async {
|
|
// Check that downwards inference correctly pins a type parameter
|
|
// when the parameter is constrained in a covariant position
|
|
String code = r'''
|
|
typedef To Func1<From, To>(From x);
|
|
Func1<String, T> f<T>(T x) => null;
|
|
Func1<String, num> test() => f(42);
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
|
|
FunctionDeclaration test = AstFinder.getTopLevelFunction(unit, "test");
|
|
var body = test.functionExpression.body as ExpressionFunctionBody;
|
|
var invoke = body.expression as MethodInvocation;
|
|
_isFunction2Of(_isNum, _isFunction2Of(_isString, _isNum))(
|
|
invoke.staticInvokeType!);
|
|
}
|
|
|
|
test_returnType_variance3() async {
|
|
// Check that the variance heuristic chooses the most precise type
|
|
// when the return type uses the variable in a contravariant position
|
|
// and there is no downwards constraint.
|
|
String code = r'''
|
|
typedef To Func1<From, To>(From x);
|
|
Func1<T, String> f<T>(T x, g(T x)) => null;
|
|
dynamic test() => f(42, (num x) => x);
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
|
|
FunctionDeclaration test = AstFinder.getTopLevelFunction(unit, "test");
|
|
var body = test.functionExpression.body as ExpressionFunctionBody;
|
|
var functionType = body.expression.staticType as FunctionType;
|
|
DartType type = functionType.normalParameterTypes[0];
|
|
_isInt(type);
|
|
}
|
|
|
|
test_returnType_variance4() async {
|
|
// Check that the variance heuristic chooses the more precise type
|
|
// when the return type uses the variable in a covariant position
|
|
// and there is no downwards constraint
|
|
String code = r'''
|
|
typedef To Func1<From, To>(From x);
|
|
Func1<String, T> f<T>(T x, g(T x)) => null;
|
|
dynamic test() => f(42, (num x) => x);
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
|
|
FunctionDeclaration test = AstFinder.getTopLevelFunction(unit, "test");
|
|
var body = test.functionExpression.body as ExpressionFunctionBody;
|
|
var functionType = body.expression.staticType as FunctionType;
|
|
DartType type = functionType.returnType;
|
|
_isInt(type);
|
|
}
|
|
|
|
test_returnType_variance5() async {
|
|
// Check that pinning works correctly with a partial type
|
|
// when the return type uses the variable in a contravariant position
|
|
String code = r'''
|
|
typedef To Func1<From, To>(From x);
|
|
Func1<T, String> f<T>(T x) => null;
|
|
T g<T, S>(Func1<T, S> f) => null;
|
|
num test() => g(f(3));
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
|
|
FunctionDeclaration test = AstFinder.getTopLevelFunction(unit, "test");
|
|
var body = test.functionExpression.body as ExpressionFunctionBody;
|
|
var call = body.expression as MethodInvocation;
|
|
_isNum(call.typeOrThrow);
|
|
_isFunction2Of(_isFunction2Of(_isNum, _isString), _isNum)(
|
|
call.staticInvokeType!);
|
|
}
|
|
|
|
test_returnType_variance6() async {
|
|
// Check that pinning works correctly with a partial type
|
|
// when the return type uses the variable in a covariant position
|
|
String code = r'''
|
|
typedef To Func1<From, To>(From x);
|
|
Func1<String, T> f<T>(T x) => null;
|
|
T g<T, S>(Func1<S, T> f) => null;
|
|
num test() => g(f(3));
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
|
|
FunctionDeclaration test = AstFinder.getTopLevelFunction(unit, "test");
|
|
var body = test.functionExpression.body as ExpressionFunctionBody;
|
|
var call = body.expression as MethodInvocation;
|
|
_isNum(call.typeOrThrow);
|
|
_isFunction2Of(_isFunction2Of(_isString, _isNum), _isNum)(
|
|
call.staticInvokeType!);
|
|
}
|
|
|
|
test_superConstructorInvocation_propagation() async {
|
|
String code = r'''
|
|
class B {
|
|
B(List<String> p);
|
|
}
|
|
class A extends B {
|
|
A() : super([]);
|
|
}
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
|
|
ConstructorDeclaration constructor =
|
|
AstFinder.getConstructorInClass(unit, "A", null);
|
|
var invocation = constructor.initializers[0] as SuperConstructorInvocation;
|
|
Expression exp = invocation.argumentList.arguments[0];
|
|
_isListOf(_isString)(exp.staticType as InterfaceType);
|
|
}
|
|
|
|
/// Verifies the result has [CompileTimeErrorCode.COULD_NOT_INFER] with
|
|
/// the expected [errorMessage].
|
|
void _expectInferenceError(String errorMessage) {
|
|
var errors = result.errors
|
|
.where((e) => e.errorCode == CompileTimeErrorCode.COULD_NOT_INFER)
|
|
.map((e) => e.message)
|
|
.toList();
|
|
expect(errors.length, 1);
|
|
var actual = errors[0];
|
|
expect(actual,
|
|
errorMessage, // Print the literal error message for easy copy+paste:
|
|
reason: 'Actual error did not match expected error:\n$actual');
|
|
}
|
|
|
|
/// Helper method for testing `FutureOr<T>`.
|
|
///
|
|
/// Validates that [code] produces [errors]. It should define a function
|
|
/// "test", whose body is an expression that invokes a method. Returns that
|
|
/// invocation.
|
|
Future<MethodInvocation> _testFutureOr(String code,
|
|
{List<ExpectedError> expectedErrors = const []}) async {
|
|
var fullCode = """
|
|
import "dart:async";
|
|
|
|
$code
|
|
""";
|
|
await assertErrorsInCode(fullCode, expectedErrors);
|
|
|
|
FunctionDeclaration test = AstFinder.getTopLevelFunction(unit, "test");
|
|
var body = test.functionExpression.body as ExpressionFunctionBody;
|
|
return body.expression as MethodInvocation;
|
|
}
|
|
}
|
|
|
|
@reflectiveTest
|
|
class StrongModeStaticTypeAnalyzer2Test extends StaticTypeAnalyzer2TestShared {
|
|
void expectStaticInvokeType(String search, String expected) {
|
|
var invocation = findNode.simple(search).parent as MethodInvocation;
|
|
assertInvokeType(invocation, expected);
|
|
}
|
|
|
|
test_dynamicObjectGetter_hashCode() async {
|
|
await assertErrorsInCode(r'''
|
|
main() {
|
|
dynamic a = null;
|
|
var foo = a.hashCode;
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 35, 3),
|
|
]);
|
|
expectInitializerType('foo', 'int');
|
|
}
|
|
|
|
test_futureOr_promotion1() async {
|
|
// Test that promotion from FutureOr<T> to T works for concrete types
|
|
String code = r'''
|
|
import "dart:async";
|
|
dynamic test(FutureOr<int> x) => (x is int) && (x.abs() == 0);
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
}
|
|
|
|
test_futureOr_promotion2() async {
|
|
// Test that promotion from FutureOr<T> to Future<T> works for concrete
|
|
// types
|
|
String code = r'''
|
|
import "dart:async";
|
|
dynamic test(FutureOr<int> x) => (x is Future<int>) &&
|
|
(x.then((x) => x) == null);
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
}
|
|
|
|
test_futureOr_promotion3() async {
|
|
// Test that promotion from FutureOr<T> to T works for type
|
|
// parameters T
|
|
String code = r'''
|
|
import "dart:async";
|
|
dynamic test<T extends num>(FutureOr<T> x) => (x is T) &&
|
|
(x.abs() == 0);
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
}
|
|
|
|
test_futureOr_promotion4() async {
|
|
// Test that promotion from FutureOr<T> to Future<T> works for type
|
|
// parameters T
|
|
String code = r'''
|
|
import "dart:async";
|
|
dynamic test<T extends num>(FutureOr<T> x) => (x is Future<T>) &&
|
|
(x.then((x) => x) == null);
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
}
|
|
|
|
test_generalizedVoid_assignToVoidOk() async {
|
|
await assertErrorsInCode(r'''
|
|
void main() {
|
|
void x;
|
|
x = 42;
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 21, 1),
|
|
]);
|
|
}
|
|
|
|
test_genericFunction() async {
|
|
await assertNoErrorsInCode(r'T f<T>(T x) => null;');
|
|
expectFunctionType('f', 'T Function<T>(T)', typeFormals: '[T]');
|
|
SimpleIdentifier f = findNode.simple('f');
|
|
var e = f.staticElement as FunctionElementImpl;
|
|
FunctionType ft = e.type.instantiate([typeProvider.stringType]);
|
|
assertType(ft, 'String Function(String)');
|
|
}
|
|
|
|
test_genericFunction_bounds() async {
|
|
await assertNoErrorsInCode(r'T f<T extends num>(T x) => null;');
|
|
expectFunctionType('f', 'T Function<T extends num>(T)',
|
|
typeFormals: '[T extends num]');
|
|
}
|
|
|
|
test_genericFunction_parameter() async {
|
|
await assertNoErrorsInCode(r'''
|
|
void g(T f<T>(T x)) {}
|
|
''');
|
|
var type = expectFunctionType2('f', 'T Function<T>(T)');
|
|
FunctionType ft = type.instantiate([typeProvider.stringType]);
|
|
assertType(ft, 'String Function(String)');
|
|
}
|
|
|
|
test_genericFunction_static() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class C<E> {
|
|
static T f<T>(T x) => null;
|
|
}
|
|
''');
|
|
expectFunctionType('f', 'T Function<T>(T)', typeFormals: '[T]');
|
|
SimpleIdentifier f = findNode.simple('f');
|
|
var e = f.staticElement as MethodElementImpl;
|
|
FunctionType ft = e.type.instantiate([typeProvider.stringType]);
|
|
assertType(ft, 'String Function(String)');
|
|
}
|
|
|
|
test_genericFunction_typedef() async {
|
|
String code = r'''
|
|
typedef T F<T>(T x);
|
|
F f0;
|
|
|
|
class C {
|
|
static F f1;
|
|
F f2;
|
|
void g(F f3) { // C
|
|
F f4;
|
|
f0(3);
|
|
f1(3);
|
|
f2(3);
|
|
f3(3);
|
|
f4(3);
|
|
}
|
|
}
|
|
|
|
class D<S> {
|
|
static F f1;
|
|
F f2;
|
|
void g(F f3) { // D
|
|
F f4;
|
|
f0(3);
|
|
f1(3);
|
|
f2(3);
|
|
f3(3);
|
|
f4(3);
|
|
}
|
|
}
|
|
''';
|
|
await assertNoErrorsInCode(code);
|
|
|
|
checkBody(String className) {
|
|
var statements = findNode.block('{ // $className').statements;
|
|
|
|
for (int i = 1; i <= 5; i++) {
|
|
Expression exp = (statements[i] as ExpressionStatement).expression;
|
|
expect(exp.staticType, typeProvider.dynamicType);
|
|
}
|
|
}
|
|
|
|
checkBody("C");
|
|
checkBody("D");
|
|
}
|
|
|
|
test_genericFunction_upwardsAndDownwards() async {
|
|
// Regression tests for https://github.com/dart-lang/sdk/issues/27586.
|
|
await assertNoErrorsInCode(r'List<num> x = [1, 2];');
|
|
expectInitializerType('x', 'List<num>');
|
|
}
|
|
|
|
test_genericFunction_upwardsAndDownwards_Object() async {
|
|
// Regression tests for https://github.com/dart-lang/sdk/issues/27625.
|
|
await assertNoErrorsInCode(r'''
|
|
List<Object> aaa = [];
|
|
List<Object> bbb = [1, 2, 3];
|
|
List<Object> ccc = [null];
|
|
List<Object> ddd = [1 as dynamic];
|
|
List<Object> eee = [new Object()];
|
|
''');
|
|
expectInitializerType('aaa', 'List<Object>');
|
|
expectInitializerType('bbb', 'List<Object>');
|
|
expectInitializerType('ccc', 'List<Object>');
|
|
expectInitializerType('ddd', 'List<Object>');
|
|
expectInitializerType('eee', 'List<Object>');
|
|
}
|
|
|
|
test_genericMethod() async {
|
|
await assertErrorsInCode(r'''
|
|
class C<E> {
|
|
List<T> f<T>(E e) => null;
|
|
}
|
|
main() {
|
|
C<String> cOfString;
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 65, 9),
|
|
]);
|
|
assertType(findElement.method('f').type, 'List<T> Function<T>(E)');
|
|
|
|
var cOfString = findElement.localVar('cOfString');
|
|
var ft = (cOfString.type as InterfaceType).getMethod('f')!.type;
|
|
assertType(ft, 'List<T> Function<T>(String)');
|
|
assertType(
|
|
ft.instantiate([typeProvider.intType]), 'List<int> Function(String)');
|
|
}
|
|
|
|
test_genericMethod_explicitTypeParams() async {
|
|
await assertErrorsInCode(r'''
|
|
class C<E> {
|
|
List<T> f<T>(E e) => null;
|
|
}
|
|
main() {
|
|
C<String> cOfString;
|
|
var x = cOfString.f<int>('hi');
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 82, 1),
|
|
]);
|
|
var f = findNode.simple('f<int>').parent as MethodInvocation;
|
|
var ft = f.staticInvokeType as FunctionType;
|
|
assertType(ft, 'List<int> Function(String)');
|
|
|
|
var x = findElement.localVar('x');
|
|
expect(x.type, typeProvider.listType(typeProvider.intType));
|
|
}
|
|
|
|
test_genericMethod_functionExpressionInvocation_explicit() async {
|
|
await assertErrorsInCode(r'''
|
|
class C<E> {
|
|
T f<T>(T e) => null;
|
|
static T g<T>(T e) => null;
|
|
static T Function<T>(T) h = null;
|
|
}
|
|
|
|
T topF<T>(T e) => null;
|
|
var topG = topF;
|
|
void test<S>(T Function<T>(T) pf) {
|
|
var c = new C<int>();
|
|
T lf<T>(T e) => null;
|
|
|
|
var lambdaCall = (<E>(E e) => e)<int>(3);
|
|
var methodCall = (c.f)<int>(3);
|
|
var staticCall = (C.g)<int>(3);
|
|
var staticFieldCall = (C.h)<int>(3);
|
|
var topFunCall = (topF)<int>(3);
|
|
var topFieldCall = (topG)<int>(3);
|
|
var localCall = (lf)<int>(3);
|
|
var paramCall = (pf)<int>(3);
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 237, 10),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 281, 10),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 315, 10),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 349, 15),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 388, 10),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 423, 12),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 460, 9),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 492, 9),
|
|
]);
|
|
_assertLocalVarType('lambdaCall', "int");
|
|
_assertLocalVarType('methodCall', "int");
|
|
_assertLocalVarType('staticCall', "int");
|
|
_assertLocalVarType('staticFieldCall', "int");
|
|
_assertLocalVarType('topFunCall', "int");
|
|
_assertLocalVarType('topFieldCall', "int");
|
|
_assertLocalVarType('localCall', "int");
|
|
_assertLocalVarType('paramCall', "int");
|
|
}
|
|
|
|
test_genericMethod_functionExpressionInvocation_functionTypedParameter_explicit() async {
|
|
await assertErrorsInCode(r'''
|
|
void test<S>(T pf<T>(T e)) {
|
|
var paramCall = (pf)<int>(3);
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 35, 9),
|
|
]);
|
|
_assertLocalVarType('paramCall', "int");
|
|
}
|
|
|
|
test_genericMethod_functionExpressionInvocation_functionTypedParameter_inferred() async {
|
|
await assertErrorsInCode(r'''
|
|
void test<S>(T pf<T>(T e)) {
|
|
var paramCall = (pf)(3);
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 35, 9),
|
|
]);
|
|
_assertLocalVarType('paramCall', "int");
|
|
}
|
|
|
|
test_genericMethod_functionExpressionInvocation_inferred() async {
|
|
await assertErrorsInCode(r'''
|
|
class C<E> {
|
|
T f<T>(T e) => null;
|
|
static T g<T>(T e) => null;
|
|
static T Function<T>(T) h = null;
|
|
}
|
|
|
|
T topF<T>(T e) => null;
|
|
var topG = topF;
|
|
void test<S>(T Function<T>(T) pf) {
|
|
var c = new C<int>();
|
|
T lf<T>(T e) => null;
|
|
|
|
var lambdaCall = (<E>(E e) => e)(3);
|
|
var methodCall = (c.f)(3);
|
|
var staticCall = (C.g)(3);
|
|
var staticFieldCall = (C.h)(3);
|
|
var topFunCall = (topF)(3);
|
|
var topFieldCall = (topG)(3);
|
|
var localCall = (lf)(3);
|
|
var paramCall = (pf)(3);
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 237, 10),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 276, 10),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 305, 10),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 334, 15),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 368, 10),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 398, 12),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 430, 9),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 457, 9),
|
|
]);
|
|
_assertLocalVarType('lambdaCall', "int");
|
|
_assertLocalVarType('methodCall', "int");
|
|
_assertLocalVarType('staticCall', "int");
|
|
_assertLocalVarType('staticFieldCall', "int");
|
|
_assertLocalVarType('topFunCall', "int");
|
|
_assertLocalVarType('topFieldCall', "int");
|
|
_assertLocalVarType('localCall', "int");
|
|
_assertLocalVarType('paramCall', "int");
|
|
}
|
|
|
|
test_genericMethod_functionInvocation_explicit() async {
|
|
await assertErrorsInCode(r'''
|
|
class C<E> {
|
|
T f<T>(T e) => null;
|
|
static T g<T>(T e) => null;
|
|
static T Function<T>(T) h = null;
|
|
}
|
|
|
|
T topF<T>(T e) => null;
|
|
var topG = topF;
|
|
void test<S>(T Function<T>(T) pf) {
|
|
var c = new C<int>();
|
|
T lf<T>(T e) => null;
|
|
var methodCall = c.f<int>(3);
|
|
var staticCall = C.g<int>(3);
|
|
var staticFieldCall = C.h<int>(3);
|
|
var topFunCall = topF<int>(3);
|
|
var topFieldCall = topG<int>(3);
|
|
var localCall = lf<int>(3);
|
|
var paramCall = pf<int>(3);
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 236, 10),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 268, 10),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 300, 15),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 337, 10),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 370, 12),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 405, 9),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 435, 9),
|
|
]);
|
|
_assertLocalVarType('methodCall', "int");
|
|
_assertLocalVarType('staticCall', "int");
|
|
_assertLocalVarType('staticFieldCall', "int");
|
|
_assertLocalVarType('topFunCall', "int");
|
|
_assertLocalVarType('topFieldCall', "int");
|
|
_assertLocalVarType('localCall', "int");
|
|
_assertLocalVarType('paramCall', "int");
|
|
}
|
|
|
|
test_genericMethod_functionInvocation_functionTypedParameter_explicit() async {
|
|
await assertErrorsInCode(r'''
|
|
void test<S>(T pf<T>(T e)) {
|
|
var paramCall = pf<int>(3);
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 35, 9),
|
|
]);
|
|
_assertLocalVarType('paramCall', "int");
|
|
}
|
|
|
|
test_genericMethod_functionInvocation_functionTypedParameter_inferred() async {
|
|
await assertErrorsInCode(r'''
|
|
void test<S>(T pf<T>(T e)) {
|
|
var paramCall = pf(3);
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 35, 9),
|
|
]);
|
|
_assertLocalVarType('paramCall', "int");
|
|
}
|
|
|
|
test_genericMethod_functionInvocation_inferred() async {
|
|
await assertErrorsInCode(r'''
|
|
class C<E> {
|
|
T f<T>(T e) => null;
|
|
static T g<T>(T e) => null;
|
|
static T Function<T>(T) h = null;
|
|
}
|
|
|
|
T topF<T>(T e) => null;
|
|
var topG = topF;
|
|
void test<S>(T Function<T>(T) pf) {
|
|
var c = new C<int>();
|
|
T lf<T>(T e) => null;
|
|
var methodCall = c.f(3);
|
|
var staticCall = C.g(3);
|
|
var staticFieldCall = C.h(3);
|
|
var topFunCall = topF(3);
|
|
var topFieldCall = topG(3);
|
|
var localCall = lf(3);
|
|
var paramCall = pf(3);
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 236, 10),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 263, 10),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 290, 15),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 322, 10),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 350, 12),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 380, 9),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 405, 9),
|
|
]);
|
|
_assertLocalVarType('methodCall', "int");
|
|
_assertLocalVarType('staticCall', "int");
|
|
_assertLocalVarType('staticFieldCall', "int");
|
|
_assertLocalVarType('topFunCall', "int");
|
|
_assertLocalVarType('topFieldCall', "int");
|
|
_assertLocalVarType('localCall', "int");
|
|
_assertLocalVarType('paramCall', "int");
|
|
}
|
|
|
|
test_genericMethod_functionTypedParameter() async {
|
|
await assertErrorsInCode(r'''
|
|
class C<E> {
|
|
List<T> f<T>(T f(E e)) => null;
|
|
}
|
|
main() {
|
|
C<String> cOfString;
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 70, 9),
|
|
]);
|
|
assertType(
|
|
findElement.method('f').type, 'List<T> Function<T>(T Function(E))');
|
|
|
|
var cOfString = findElement.localVar('cOfString');
|
|
var ft = (cOfString.type as InterfaceType).getMethod('f')!.type;
|
|
assertType(ft, 'List<T> Function<T>(T Function(String))');
|
|
assertType(ft.instantiate([typeProvider.intType]),
|
|
'List<int> Function(int Function(String))');
|
|
}
|
|
|
|
test_genericMethod_functionTypedParameter_tearoff() async {
|
|
await assertErrorsInCode(r'''
|
|
void test<S>(T pf<T>(T e)) {
|
|
var paramTearOff = pf;
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 35, 12),
|
|
]);
|
|
_assertLocalVarType('paramTearOff', "T Function<T>(T)");
|
|
}
|
|
|
|
test_genericMethod_implicitDynamic() async {
|
|
// Regression test for:
|
|
// https://github.com/dart-lang/sdk/issues/25100#issuecomment-162047588
|
|
// These should not cause any hints or warnings.
|
|
await assertNoErrorsInCode(r'''
|
|
class List<E> {
|
|
T map<T>(T f(E e)) => null;
|
|
}
|
|
void foo() {
|
|
List list = null;
|
|
list.map((e) => e);
|
|
list.map((e) => 3);
|
|
}''');
|
|
expectIdentifierType(
|
|
'map((e) => e);', 'T Function<T>(T Function(dynamic))');
|
|
expectIdentifierType(
|
|
'map((e) => 3);', 'T Function<T>(T Function(dynamic))');
|
|
|
|
MethodInvocation m1 = findNode.methodInvocation('map((e) => e);');
|
|
assertInvokeType(m1, 'dynamic Function(dynamic Function(dynamic))');
|
|
MethodInvocation m2 = findNode.methodInvocation('map((e) => 3);');
|
|
assertInvokeType(m2, 'int Function(int Function(dynamic))');
|
|
}
|
|
|
|
test_genericMethod_max_doubleDouble() async {
|
|
await assertErrorsInCode(r'''
|
|
import 'dart:math';
|
|
main() {
|
|
var foo = max(1.0, 2.0);
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 35, 3),
|
|
]);
|
|
expectInitializerType('foo', 'double');
|
|
}
|
|
|
|
test_genericMethod_max_doubleDouble_prefixed() async {
|
|
await assertErrorsInCode(r'''
|
|
import 'dart:math' as math;
|
|
main() {
|
|
var foo = math.max(1.0, 2.0);
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 43, 3),
|
|
]);
|
|
expectInitializerType('foo', 'double');
|
|
}
|
|
|
|
test_genericMethod_max_doubleInt() async {
|
|
await assertErrorsInCode(r'''
|
|
import 'dart:math';
|
|
main() {
|
|
var foo = max(1.0, 2);
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 35, 3),
|
|
]);
|
|
expectInitializerType('foo', 'num');
|
|
}
|
|
|
|
test_genericMethod_max_intDouble() async {
|
|
await assertErrorsInCode(r'''
|
|
import 'dart:math';
|
|
main() {
|
|
var foo = max(1, 2.0);
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 35, 3),
|
|
]);
|
|
expectInitializerType('foo', 'num');
|
|
}
|
|
|
|
test_genericMethod_max_intInt() async {
|
|
await assertErrorsInCode(r'''
|
|
import 'dart:math';
|
|
main() {
|
|
var foo = max(1, 2);
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 35, 3),
|
|
]);
|
|
expectInitializerType('foo', 'int');
|
|
}
|
|
|
|
test_genericMethod_nestedBound() async {
|
|
// Just validate that there is no warning on the call to `.abs()`.
|
|
await assertNoErrorsInCode(r'''
|
|
class Foo<T extends num> {
|
|
void method<U extends T>(U u) {
|
|
u.abs();
|
|
}
|
|
}
|
|
''');
|
|
}
|
|
|
|
test_genericMethod_nestedCapture() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class C<T> {
|
|
T f<S>(S x) {
|
|
new C<S>().f<int>(3);
|
|
new C<S>().f; // tear-off
|
|
return null;
|
|
}
|
|
}
|
|
''');
|
|
MethodInvocation f = findNode.methodInvocation('f<int>(3);');
|
|
assertInvokeType(f, 'S Function(int)');
|
|
|
|
expectIdentifierType('f;', 'S Function<S₀>(S₀)');
|
|
}
|
|
|
|
@FailingTest(issue: 'https://github.com/dart-lang/sdk/issues/30236')
|
|
test_genericMethod_nestedCaptureBounds() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class C<T> {
|
|
T f<S extends T>(S x) {
|
|
new C<S>().f<int>(3);
|
|
new C<S>().f; // tear-off
|
|
return null;
|
|
}
|
|
}
|
|
''');
|
|
MethodInvocation f = findNode.methodInvocation('f<int>(3);');
|
|
assertInvokeType(f, 'S Function(int)');
|
|
|
|
expectIdentifierType('f;', 'S Function<S₀ extends S>(S₀)');
|
|
}
|
|
|
|
test_genericMethod_nestedFunctions() async {
|
|
await assertErrorsInCode(r'''
|
|
S f<S>(S x) {
|
|
g<S>(S x) => f;
|
|
return null;
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_ELEMENT, 16, 1),
|
|
]);
|
|
assertType(findElement.topFunction('f').type, 'S Function<S>(S)');
|
|
assertType(findElement.localFunction('g').type,
|
|
'S Function<S>(S) Function<S₀>(S₀)');
|
|
}
|
|
|
|
test_genericMethod_override() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class C {
|
|
T f<T>(T x) => null;
|
|
}
|
|
class D extends C {
|
|
T f<T>(T x) => null; // from D
|
|
}
|
|
''');
|
|
expectFunctionType('f<T>(T x) => null; // from D', 'T Function<T>(T)',
|
|
typeFormals: '[T]');
|
|
SimpleIdentifier f = findNode.simple('f<T>(T x) => null; // from D');
|
|
var e = f.staticElement as MethodElementImpl;
|
|
FunctionType ft = e.type.instantiate([typeProvider.stringType]);
|
|
assertType(ft, 'String Function(String)');
|
|
}
|
|
|
|
test_genericMethod_override_bounds() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class A {}
|
|
class B {
|
|
T f<T extends A>(T x) => null;
|
|
}
|
|
// override with the same bound is OK
|
|
class C extends B {
|
|
T f<T extends A>(T x) => null;
|
|
}
|
|
// override with new name and the same bound is OK
|
|
class D extends B {
|
|
Q f<Q extends A>(Q x) => null;
|
|
}
|
|
''');
|
|
}
|
|
|
|
test_genericMethod_override_covariant_field() async {
|
|
await assertNoErrorsInCode(r'''
|
|
abstract class A {
|
|
num get x;
|
|
set x(covariant num _);
|
|
}
|
|
|
|
class B extends A {
|
|
int x;
|
|
}
|
|
''');
|
|
}
|
|
|
|
test_genericMethod_override_differentContextsSameBounds() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class GenericMethodBounds<T> {
|
|
Type get t => T;
|
|
GenericMethodBounds<E> foo<E extends T>() => new GenericMethodBounds<E>();
|
|
GenericMethodBounds<E> bar<E extends void Function(T)>() =>
|
|
new GenericMethodBounds<E>();
|
|
}
|
|
|
|
class GenericMethodBoundsDerived extends GenericMethodBounds<num> {
|
|
GenericMethodBounds<E> foo<E extends num>() => new GenericMethodBounds<E>();
|
|
GenericMethodBounds<E> bar<E extends void Function(num)>() =>
|
|
new GenericMethodBounds<E>();
|
|
}
|
|
''');
|
|
}
|
|
|
|
test_genericMethod_override_invalidContravariantTypeParamBounds() async {
|
|
await assertErrorsInCode(r'''
|
|
class A {}
|
|
class B extends A {}
|
|
class C {
|
|
T f<T extends A>(T x) => null;
|
|
}
|
|
class D extends C {
|
|
T f<T extends B>(T x) => null;
|
|
}''', [
|
|
error(CompileTimeErrorCode.INVALID_OVERRIDE, 101, 1),
|
|
]);
|
|
}
|
|
|
|
test_genericMethod_override_invalidCovariantTypeParamBounds() async {
|
|
await assertErrorsInCode(r'''
|
|
class A {}
|
|
class B extends A {}
|
|
class C {
|
|
T f<T extends B>(T x) => null;
|
|
}
|
|
class D extends C {
|
|
T f<T extends A>(T x) => null;
|
|
}''', [
|
|
error(CompileTimeErrorCode.INVALID_OVERRIDE, 101, 1),
|
|
]);
|
|
}
|
|
|
|
test_genericMethod_override_invalidReturnType() async {
|
|
await assertErrorsInCode(r'''
|
|
class C {
|
|
Iterable<T> f<T>(T x) => null;
|
|
}
|
|
class D extends C {
|
|
String f<S>(S x) => null;
|
|
}''', [
|
|
error(CompileTimeErrorCode.INVALID_OVERRIDE, 74, 1),
|
|
]);
|
|
}
|
|
|
|
test_genericMethod_override_invalidTypeParamCount() async {
|
|
await assertErrorsInCode(r'''
|
|
class C {
|
|
T f<T>(T x) => null;
|
|
}
|
|
class D extends C {
|
|
S f<T, S>(T x) => null;
|
|
}''', [
|
|
error(CompileTimeErrorCode.INVALID_OVERRIDE, 59, 1),
|
|
]);
|
|
}
|
|
|
|
test_genericMethod_propagatedType_promotion() async {
|
|
// Regression test for:
|
|
// https://github.com/dart-lang/sdk/issues/25340
|
|
|
|
// Note, after https://github.com/dart-lang/sdk/issues/25486 the original
|
|
// example won't work, as we now compute a static type and therefore discard
|
|
// the propagated type. So a new test was created that doesn't run under
|
|
// strong mode.
|
|
await assertErrorsInCode(r'''
|
|
abstract class Iter {
|
|
List<S> map<S>(S f(x));
|
|
}
|
|
class C {}
|
|
C toSpan(dynamic element) {
|
|
if (element is Iter) {
|
|
var y = element.map(toSpan);
|
|
}
|
|
return null;
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 122, 1),
|
|
]);
|
|
_assertLocalVarType('y', 'List<C>');
|
|
}
|
|
|
|
test_genericMethod_tearoff() async {
|
|
await assertErrorsInCode(r'''
|
|
class C<E> {
|
|
T f<T>(E e) => null;
|
|
static T g<T>(T e) => null;
|
|
static T Function<T>(T) h = null;
|
|
}
|
|
|
|
T topF<T>(T e) => null;
|
|
var topG = topF;
|
|
void test<S>(T Function<T>(T) pf) {
|
|
var c = new C<int>();
|
|
T lf<T>(T e) => null;
|
|
var methodTearOff = c.f;
|
|
var staticTearOff = C.g;
|
|
var staticFieldTearOff = C.h;
|
|
var topFunTearOff = topF;
|
|
var topFieldTearOff = topG;
|
|
var localTearOff = lf;
|
|
var paramTearOff = pf;
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 236, 13),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 263, 13),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 290, 18),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 322, 13),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 350, 15),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 380, 12),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 405, 12),
|
|
]);
|
|
_assertLocalVarType('methodTearOff', "T Function<T>(int)");
|
|
_assertLocalVarType('staticTearOff', "T Function<T>(T)");
|
|
_assertLocalVarType('staticFieldTearOff', "T Function<T>(T)");
|
|
_assertLocalVarType('topFunTearOff', "T Function<T>(T)");
|
|
_assertLocalVarType('topFieldTearOff', "T Function<T>(T)");
|
|
_assertLocalVarType('localTearOff', "T Function<T>(T)");
|
|
_assertLocalVarType('paramTearOff', "T Function<T>(T)");
|
|
}
|
|
|
|
@failingTest
|
|
test_genericMethod_tearoff_instantiated() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class C<E> {
|
|
T f<T>(E e) => null;
|
|
static T g<T>(T e) => null;
|
|
static T Function<T>(T) h = null;
|
|
}
|
|
|
|
T topF<T>(T e) => null;
|
|
var topG = topF;
|
|
void test<S>(T pf<T>(T e)) {
|
|
var c = new C<int>();
|
|
T lf<T>(T e) => null;
|
|
var methodTearOffInst = c.f<int>;
|
|
var staticTearOffInst = C.g<int>;
|
|
var staticFieldTearOffInst = C.h<int>;
|
|
var topFunTearOffInst = topF<int>;
|
|
var topFieldTearOffInst = topG<int>;
|
|
var localTearOffInst = lf<int>;
|
|
var paramTearOffInst = pf<int>;
|
|
}
|
|
''');
|
|
expectIdentifierType('methodTearOffInst', "int Function(int)");
|
|
expectIdentifierType('staticTearOffInst', "int Function(int)");
|
|
expectIdentifierType('staticFieldTearOffInst', "int Function(int)");
|
|
expectIdentifierType('topFunTearOffInst', "int Function(int)");
|
|
expectIdentifierType('topFieldTearOffInst', "int Function(int)");
|
|
expectIdentifierType('localTearOffInst', "int Function(int)");
|
|
expectIdentifierType('paramTearOffInst', "int Function(int)");
|
|
}
|
|
|
|
test_genericMethod_then() async {
|
|
await assertErrorsInCode(r'''
|
|
String toString(int x) => x.toString();
|
|
main() {
|
|
Future<int> bar = null;
|
|
var foo = bar.then(toString);
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 81, 3),
|
|
]);
|
|
|
|
expectInitializerType('foo', 'Future<String>');
|
|
}
|
|
|
|
test_genericMethod_then_prefixed() async {
|
|
await assertErrorsInCode(r'''
|
|
import 'dart:async' as async;
|
|
String toString(int x) => x.toString();
|
|
main() {
|
|
async.Future<int> bar = null;
|
|
var foo = bar.then(toString);
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 117, 3),
|
|
]);
|
|
expectInitializerType('foo', 'Future<String>');
|
|
}
|
|
|
|
test_genericMethod_then_propagatedType() async {
|
|
// Regression test for https://github.com/dart-lang/sdk/issues/25482.
|
|
await assertErrorsInCode(r'''
|
|
void main() {
|
|
Future<String> p;
|
|
var foo = p.then((r) => new Future<String>.value(3));
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 40, 3),
|
|
error(CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, 85, 1),
|
|
]);
|
|
// Note: this correctly reports the error
|
|
// CompileTimeErrorCode.ARGUMENT_TYPE_NOT_ASSIGNABLE when run with the driver;
|
|
// when run without the driver, it reports no errors. So we don't bother
|
|
// checking whether the correct errors were reported.
|
|
expectInitializerType('foo', 'Future<String>');
|
|
}
|
|
|
|
test_genericMethod_toplevel_field_staticTearoff() async {
|
|
await assertErrorsInCode(r'''
|
|
class C<E> {
|
|
static T g<T>(T e) => null;
|
|
static T Function<T>(T) h = null;
|
|
}
|
|
|
|
void test() {
|
|
var fieldRead = C.h;
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 102, 9),
|
|
]);
|
|
_assertLocalVarType('fieldRead', "T Function<T>(T)");
|
|
}
|
|
|
|
test_implicitBounds() async {
|
|
await assertErrorsInCode(r'''
|
|
class A<T> {}
|
|
|
|
class B<T extends num> {}
|
|
|
|
class C<S extends int, T extends B<S>, U extends A> {}
|
|
|
|
void test() {
|
|
A ai;
|
|
B bi;
|
|
C ci;
|
|
var aa = new A();
|
|
var bb = new B();
|
|
var cc = new C();
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 116, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 124, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 132, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 142, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 162, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 182, 2),
|
|
]);
|
|
_assertLocalVarType('ai', "A<dynamic>");
|
|
_assertLocalVarType('bi', "B<num>");
|
|
_assertLocalVarType('ci', "C<int, B<int>, A<dynamic>>");
|
|
_assertLocalVarType('aa', "A<dynamic>");
|
|
_assertLocalVarType('bb', "B<num>");
|
|
_assertLocalVarType('cc', "C<int, B<int>, A<dynamic>>");
|
|
}
|
|
|
|
test_instantiateToBounds_class_error_extension_malbounded() async {
|
|
// Test that superclasses are strictly checked for malbounded default
|
|
// types
|
|
await assertErrorsInCode(r'''
|
|
class C<T0 extends List<T1>, T1 extends List<T0>> {}
|
|
class D extends C {}
|
|
''', [
|
|
error(CompileTimeErrorCode.TYPE_ARGUMENT_NOT_MATCHING_BOUNDS, 69, 1),
|
|
error(CompileTimeErrorCode.TYPE_ARGUMENT_NOT_MATCHING_BOUNDS, 69, 1),
|
|
]);
|
|
}
|
|
|
|
test_instantiateToBounds_class_error_instantiation_malbounded() async {
|
|
// Test that instance creations are strictly checked for malbounded default
|
|
// types
|
|
await assertErrorsInCode(r'''
|
|
class C<T0 extends List<T1>, T1 extends List<T0>> {}
|
|
void test() {
|
|
var c = new C();
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 73, 1),
|
|
error(CompileTimeErrorCode.TYPE_ARGUMENT_NOT_MATCHING_BOUNDS, 81, 1),
|
|
error(CompileTimeErrorCode.COULD_NOT_INFER, 81, 1),
|
|
]);
|
|
_assertLocalVarType('c', 'C<List<dynamic>, List<List<dynamic>>>');
|
|
}
|
|
|
|
test_instantiateToBounds_class_error_recursion() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class C<T0 extends List<T1>, T1 extends List<T0>> {}
|
|
C c;
|
|
''');
|
|
_assertTopVarType('c', 'C<List<dynamic>, List<dynamic>>');
|
|
}
|
|
|
|
test_instantiateToBounds_class_error_recursion_self() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class C<T extends C<T>> {}
|
|
C c;
|
|
''');
|
|
_assertTopVarType('c', 'C<C<dynamic>>');
|
|
}
|
|
|
|
test_instantiateToBounds_class_error_recursion_self2() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class A<E> {}
|
|
class C<T extends A<T>> {}
|
|
C c;
|
|
''');
|
|
_assertTopVarType('c', 'C<A<dynamic>>');
|
|
}
|
|
|
|
test_instantiateToBounds_class_error_typedef() async {
|
|
await assertErrorsInCode(r'''
|
|
typedef T F<T>(T x);
|
|
class C<T extends F<T>> {}
|
|
C c;
|
|
''', [
|
|
error(CompileTimeErrorCode.TYPE_ARGUMENT_NOT_MATCHING_BOUNDS, 48, 1),
|
|
]);
|
|
_assertTopVarType('c', 'C<dynamic Function(dynamic)>');
|
|
}
|
|
|
|
test_instantiateToBounds_class_ok_implicitDynamic_multi() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class C<T0 extends Map<T1, T2>, T1 extends List, T2 extends int> {}
|
|
C c;
|
|
''');
|
|
_assertTopVarType('c', 'C<Map<List<dynamic>, int>, List<dynamic>, int>');
|
|
}
|
|
|
|
test_instantiateToBounds_class_ok_referenceOther_after() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class C<T0 extends T1, T1 extends int> {}
|
|
C c;
|
|
''');
|
|
_assertTopVarType('c', 'C<int, int>');
|
|
}
|
|
|
|
test_instantiateToBounds_class_ok_referenceOther_after2() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class C<T0 extends Map<T1, T1>, T1 extends int> {}
|
|
C c;
|
|
''');
|
|
_assertTopVarType('c', 'C<Map<int, int>, int>');
|
|
}
|
|
|
|
test_instantiateToBounds_class_ok_referenceOther_before() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class C<T0 extends int, T1 extends T0> {}
|
|
C c;
|
|
''');
|
|
_assertTopVarType('c', 'C<int, int>');
|
|
}
|
|
|
|
test_instantiateToBounds_class_ok_referenceOther_multi() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class C<T0 extends Map<T1, T2>, T1 extends List<T2>, T2 extends int> {}
|
|
C c;
|
|
''');
|
|
_assertTopVarType('c', 'C<Map<List<int>, int>, List<int>, int>');
|
|
}
|
|
|
|
test_instantiateToBounds_class_ok_simpleBounds() async {
|
|
await assertErrorsInCode(r'''
|
|
class A<T> {}
|
|
class B<T extends num> {}
|
|
class C<T extends List<int>> {}
|
|
class D<T extends A> {}
|
|
void main() {
|
|
A a;
|
|
B b;
|
|
C c;
|
|
D d;
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 114, 1),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 121, 1),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 128, 1),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 135, 1),
|
|
]);
|
|
_assertLocalVarType('a', 'A<dynamic>');
|
|
_assertLocalVarType('b', 'B<num>');
|
|
_assertLocalVarType('c', 'C<List<int>>');
|
|
_assertLocalVarType('d', 'D<A<dynamic>>');
|
|
}
|
|
|
|
test_instantiateToBounds_generic_function_error_malbounded() async {
|
|
// Test that generic methods are strictly checked for malbounded default
|
|
// types
|
|
await assertErrorsInCode(r'''
|
|
T0 f<T0 extends List<T1>, T1 extends List<T0>>() {}
|
|
void g() {
|
|
var c = f();
|
|
return;
|
|
}
|
|
''', [
|
|
error(HintCode.MISSING_RETURN, 3, 1),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 69, 1),
|
|
error(CompileTimeErrorCode.COULD_NOT_INFER, 73, 1),
|
|
]);
|
|
_assertLocalVarType('c', 'List<dynamic>');
|
|
}
|
|
|
|
test_instantiateToBounds_method_ok_referenceOther_before() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class C<T> {
|
|
void m<S0 extends T, S1 extends List<S0>>(S0 p0, S1 p1) {}
|
|
|
|
void main() {
|
|
m(null, null);
|
|
}
|
|
}
|
|
''');
|
|
|
|
expectStaticInvokeType('m(null', 'void Function(Null, Null)');
|
|
}
|
|
|
|
test_instantiateToBounds_method_ok_referenceOther_before2() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class C<T> {
|
|
Map<S0, S1> m<S0 extends T, S1 extends List<S0>>() => null;
|
|
|
|
void main() {
|
|
m();
|
|
}
|
|
}
|
|
''');
|
|
|
|
expectStaticInvokeType('m();', 'Map<T, List<T>> Function()');
|
|
}
|
|
|
|
test_instantiateToBounds_method_ok_simpleBounds() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class C<T> {
|
|
void m<S extends T>(S p0) {}
|
|
|
|
void main() {
|
|
m(null);
|
|
}
|
|
}
|
|
''');
|
|
|
|
expectStaticInvokeType('m(null)', 'void Function(Null)');
|
|
}
|
|
|
|
test_instantiateToBounds_method_ok_simpleBounds2() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class C<T> {
|
|
S m<S extends T>() => null;
|
|
|
|
void main() {
|
|
m();
|
|
}
|
|
}
|
|
''');
|
|
|
|
expectStaticInvokeType('m();', 'T Function()');
|
|
}
|
|
|
|
test_issue32396() async {
|
|
await assertNoErrorsInCode(r'''
|
|
class C<E> {
|
|
static T g<T>(T e) => null;
|
|
static final h = g;
|
|
}
|
|
''');
|
|
}
|
|
|
|
test_objectMethodOnFunctions_Anonymous() async {
|
|
await _objectMethodOnFunctions_helper2(r'''
|
|
void main() {
|
|
var f = (x) => 3;
|
|
// No errors, correct type
|
|
var t0 = f.toString();
|
|
var t1 = f.toString;
|
|
var t2 = f.hashCode;
|
|
|
|
// Expressions, no errors, correct type
|
|
var t3 = (f).toString();
|
|
var t4 = (f).toString;
|
|
var t5 = (f).hashCode;
|
|
|
|
// Cascades, no errors
|
|
f..toString();
|
|
f..toString;
|
|
f..hashCode;
|
|
|
|
// Expression cascades, no errors
|
|
(f)..toString();
|
|
(f)..toString;
|
|
(f)..hashCode;
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 69, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 94, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 117, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 183, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 210, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 235, 2),
|
|
]);
|
|
}
|
|
|
|
test_objectMethodOnFunctions_Function() async {
|
|
await _objectMethodOnFunctions_helper2(r'''
|
|
void main() {
|
|
Function f;
|
|
// No errors, correct type
|
|
var t0 = f.toString();
|
|
var t1 = f.toString;
|
|
var t2 = f.hashCode;
|
|
|
|
// Expressions, no errors, correct type
|
|
var t3 = (f).toString();
|
|
var t4 = (f).toString;
|
|
var t5 = (f).hashCode;
|
|
|
|
// Cascades, no errors
|
|
f..toString();
|
|
f..toString;
|
|
f..hashCode;
|
|
|
|
// Expression cascades, no errors
|
|
(f)..toString();
|
|
(f)..toString;
|
|
(f)..hashCode;
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 63, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 88, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 111, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 177, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 204, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 229, 2),
|
|
]);
|
|
}
|
|
|
|
test_objectMethodOnFunctions_Static() async {
|
|
await _objectMethodOnFunctions_helper2(r'''
|
|
int f(int x) => null;
|
|
void main() {
|
|
// No errors, correct type
|
|
var t0 = f.toString();
|
|
var t1 = f.toString;
|
|
var t2 = f.hashCode;
|
|
|
|
// Expressions, no errors, correct type
|
|
var t3 = (f).toString();
|
|
var t4 = (f).toString;
|
|
var t5 = (f).hashCode;
|
|
|
|
// Cascades, no errors
|
|
f..toString();
|
|
f..toString;
|
|
f..hashCode;
|
|
|
|
// Expression cascades, no errors
|
|
(f)..toString();
|
|
(f)..toString;
|
|
(f)..hashCode;
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 71, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 96, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 119, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 185, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 212, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 237, 2),
|
|
]);
|
|
}
|
|
|
|
test_objectMethodOnFunctions_Typedef() async {
|
|
await _objectMethodOnFunctions_helper2(r'''
|
|
typedef bool Predicate<T>(T object);
|
|
|
|
void main() {
|
|
Predicate<int> f;
|
|
// No errors, correct type
|
|
var t0 = f.toString();
|
|
var t1 = f.toString;
|
|
var t2 = f.hashCode;
|
|
|
|
// Expressions, no errors, correct type
|
|
var t3 = (f).toString();
|
|
var t4 = (f).toString;
|
|
var t5 = (f).hashCode;
|
|
|
|
// Cascades, no errors
|
|
f..toString();
|
|
f..toString;
|
|
f..hashCode;
|
|
|
|
// Expression cascades, no errors
|
|
(f)..toString();
|
|
(f)..toString;
|
|
(f)..hashCode;
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 107, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 132, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 155, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 221, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 248, 2),
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 273, 2),
|
|
]);
|
|
}
|
|
|
|
test_returnOfInvalidType_object_void() async {
|
|
await assertErrorsInCode(
|
|
"Object f() { void voidFn() => null; return voidFn(); }", [
|
|
error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_FUNCTION, 43, 8),
|
|
]);
|
|
}
|
|
|
|
test_setterWithDynamicTypeIsError() async {
|
|
await assertErrorsInCode(r'''
|
|
class A {
|
|
dynamic set f(String s) => null;
|
|
}
|
|
dynamic set g(int x) => null;
|
|
''', [
|
|
error(CompileTimeErrorCode.NON_VOID_RETURN_FOR_SETTER, 12, 7),
|
|
error(CompileTimeErrorCode.NON_VOID_RETURN_FOR_SETTER, 47, 7),
|
|
]);
|
|
}
|
|
|
|
test_setterWithExplicitVoidType_returningVoid() async {
|
|
await assertNoErrorsInCode(r'''
|
|
void returnsVoid() {}
|
|
class A {
|
|
void set f(String s) => returnsVoid();
|
|
}
|
|
void set g(int x) => returnsVoid();
|
|
''');
|
|
}
|
|
|
|
test_setterWithNoVoidType() async {
|
|
await assertErrorsInCode(r'''
|
|
class A {
|
|
set f(String s) {
|
|
return '42';
|
|
}
|
|
}
|
|
set g(int x) => 42;
|
|
''', [
|
|
error(CompileTimeErrorCode.RETURN_OF_INVALID_TYPE_FROM_FUNCTION, 41, 4),
|
|
]);
|
|
}
|
|
|
|
test_setterWithNoVoidType_returningVoid() async {
|
|
await assertNoErrorsInCode(r'''
|
|
void returnsVoid() {}
|
|
class A {
|
|
set f(String s) => returnsVoid();
|
|
}
|
|
set g(int x) => returnsVoid();
|
|
''');
|
|
}
|
|
|
|
test_setterWithOtherTypeIsError() async {
|
|
await assertErrorsInCode(r'''
|
|
class A {
|
|
String set f(String s) => null;
|
|
}
|
|
Object set g(x) => null;
|
|
''', [
|
|
error(CompileTimeErrorCode.NON_VOID_RETURN_FOR_SETTER, 12, 6),
|
|
error(CompileTimeErrorCode.NON_VOID_RETURN_FOR_SETTER, 46, 6),
|
|
]);
|
|
}
|
|
|
|
test_ternaryOperator_null_left() async {
|
|
await assertErrorsInCode(r'''
|
|
main() {
|
|
var foo = (true) ? null : 3;
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 15, 3),
|
|
]);
|
|
expectInitializerType('foo', 'int');
|
|
}
|
|
|
|
test_ternaryOperator_null_right() async {
|
|
await assertErrorsInCode(r'''
|
|
main() {
|
|
var foo = (true) ? 3 : null;
|
|
}
|
|
''', [
|
|
error(HintCode.UNUSED_LOCAL_VARIABLE, 15, 3),
|
|
]);
|
|
expectInitializerType('foo', 'int');
|
|
}
|
|
|
|
void _assertLocalVarType(String name, String expectedType) {
|
|
var element = findElement.localVar(name);
|
|
assertType(element.type, expectedType);
|
|
}
|
|
|
|
void _assertTopVarType(String name, String expectedType) {
|
|
var element = findElement.topVar(name);
|
|
assertType(element.type, expectedType);
|
|
}
|
|
|
|
Future<void> _objectMethodOnFunctions_helper2(
|
|
String code, List<ExpectedError> expectedErrors) async {
|
|
await assertErrorsInCode(code, expectedErrors);
|
|
_assertLocalVarType('t0', "String");
|
|
_assertLocalVarType('t1', "String Function()");
|
|
_assertLocalVarType('t2', "int");
|
|
_assertLocalVarType('t3', "String");
|
|
_assertLocalVarType('t4', "String Function()");
|
|
_assertLocalVarType('t5', "int");
|
|
}
|
|
}
|
|
|
|
@reflectiveTest
|
|
class StrongModeTypePropagationTest extends PubPackageResolutionTest {
|
|
test_foreachInference_dynamic_disabled() async {
|
|
await resolveTestCode(r'''
|
|
main() {
|
|
var list = <int>[];
|
|
for (dynamic v in list) {
|
|
v; // marker
|
|
}
|
|
}''');
|
|
assertTypeDynamic(findElement.localVar('v').type);
|
|
assertTypeDynamic(findNode.simple('v; // marker'));
|
|
}
|
|
|
|
test_foreachInference_reusedVar_disabled() async {
|
|
await resolveTestCode(r'''
|
|
main() {
|
|
var list = <int>[];
|
|
var v;
|
|
for (v in list) {
|
|
v; // marker
|
|
}
|
|
}''');
|
|
assertTypeDynamic(findNode.simple('v in'));
|
|
assertTypeDynamic(findNode.simple('v; // marker'));
|
|
}
|
|
|
|
test_foreachInference_var() async {
|
|
await resolveTestCode(r'''
|
|
main() {
|
|
var list = <int>[];
|
|
for (var v in list) {
|
|
v; // marker
|
|
}
|
|
}''');
|
|
assertType(findElement.localVar('v').type, 'int');
|
|
assertType(findNode.simple('v; // marker'), 'int');
|
|
}
|
|
|
|
test_foreachInference_var_iterable() async {
|
|
await resolveTestCode(r'''
|
|
main() {
|
|
Iterable<int> list = <int>[];
|
|
for (var v in list) {
|
|
v; // marker
|
|
}
|
|
}''');
|
|
assertType(findElement.localVar('v').type, 'int');
|
|
assertType(findNode.simple('v; // marker'), 'int');
|
|
}
|
|
|
|
test_foreachInference_var_stream() async {
|
|
await resolveTestCode(r'''
|
|
main() async {
|
|
Stream<int> stream = null;
|
|
await for (var v in stream) {
|
|
v; // marker
|
|
}
|
|
}''');
|
|
assertType(findElement.localVar('v').type, 'int');
|
|
assertType(findNode.simple('v; // marker'), 'int');
|
|
}
|
|
|
|
test_inconsistentMethodInheritance_inferFunctionTypeFromTypedef() async {
|
|
await assertNoErrorsInCode(r'''
|
|
typedef bool F<E>(E argument);
|
|
|
|
abstract class Base {
|
|
f<E extends int>(F<int> x);
|
|
}
|
|
|
|
abstract class BaseCopy extends Base {
|
|
}
|
|
|
|
abstract class Override implements Base, BaseCopy {
|
|
f<E extends int>(x) => null;
|
|
}
|
|
|
|
class C extends Override implements Base {}
|
|
''');
|
|
}
|
|
|
|
test_localVariableInference_bottom_disabled() async {
|
|
await resolveTestCode(r'''
|
|
main() {
|
|
var v = null;
|
|
v; // marker
|
|
}''');
|
|
assertTypeDynamic(findElement.localVar('v').type);
|
|
assertTypeDynamic(findNode.simple('v; // marker'));
|
|
}
|
|
|
|
test_localVariableInference_constant() async {
|
|
await resolveTestCode(r'''
|
|
main() {
|
|
var v = 3;
|
|
v; // marker
|
|
}''');
|
|
assertType(findElement.localVar('v').type, 'int');
|
|
assertType(findNode.simple('v; // marker'), 'int');
|
|
}
|
|
|
|
test_localVariableInference_declaredType_disabled() async {
|
|
await resolveTestCode(r'''
|
|
main() {
|
|
dynamic v = 3;
|
|
v; // marker
|
|
}''');
|
|
assertTypeDynamic(findElement.localVar('v').type);
|
|
assertTypeDynamic(findNode.simple('v; // marker'));
|
|
}
|
|
|
|
test_localVariableInference_noInitializer_disabled() async {
|
|
await resolveTestCode(r'''
|
|
main() {
|
|
var v;
|
|
v = 3;
|
|
v; // marker
|
|
}''');
|
|
if (hasAssignmentLeftResolution) {
|
|
assertTypeDynamic(findNode.simple('v ='));
|
|
} else {
|
|
assertTypeNull(findNode.simple('v ='));
|
|
}
|
|
assertTypeDynamic(findNode.simple('v; // marker'));
|
|
}
|
|
|
|
test_localVariableInference_transitive_field_inferred_lexical() async {
|
|
await resolveTestCode(r'''
|
|
class A {
|
|
final x = 3;
|
|
f() {
|
|
var v = x;
|
|
return v; // marker
|
|
}
|
|
}
|
|
main() {
|
|
}
|
|
''');
|
|
assertType(findElement.localVar('v').type, 'int');
|
|
assertType(findNode.simple('v; // marker'), 'int');
|
|
}
|
|
|
|
test_localVariableInference_transitive_field_inferred_reversed() async {
|
|
await resolveTestCode(r'''
|
|
class A {
|
|
f() {
|
|
var v = x;
|
|
return v; // marker
|
|
}
|
|
final x = 3;
|
|
}
|
|
main() {
|
|
}
|
|
''');
|
|
assertType(findElement.localVar('v').type, 'int');
|
|
assertType(findNode.simple('v; // marker'), 'int');
|
|
}
|
|
|
|
test_localVariableInference_transitive_field_lexical() async {
|
|
await resolveTestCode(r'''
|
|
class A {
|
|
int x = 3;
|
|
f() {
|
|
var v = x;
|
|
return v; // marker
|
|
}
|
|
}
|
|
main() {
|
|
}
|
|
''');
|
|
assertType(findElement.localVar('v').type, 'int');
|
|
assertType(findNode.simple('v; // marker'), 'int');
|
|
}
|
|
|
|
test_localVariableInference_transitive_field_reversed() async {
|
|
await resolveTestCode(r'''
|
|
class A {
|
|
f() {
|
|
var v = x;
|
|
return v; // marker
|
|
}
|
|
int x = 3;
|
|
}
|
|
main() {
|
|
}
|
|
''');
|
|
assertType(findElement.localVar('v').type, 'int');
|
|
assertType(findNode.simple('v; // marker'), 'int');
|
|
}
|
|
|
|
test_localVariableInference_transitive_list_local() async {
|
|
await resolveTestCode(r'''
|
|
main() {
|
|
var x = <int>[3];
|
|
var v = x[0];
|
|
v; // marker
|
|
}''');
|
|
assertType(findElement.localVar('v').type, 'int');
|
|
assertType(findNode.simple('v; // marker'), 'int');
|
|
}
|
|
|
|
test_localVariableInference_transitive_local() async {
|
|
await resolveTestCode(r'''
|
|
main() {
|
|
var x = 3;
|
|
var v = x;
|
|
v; // marker
|
|
}''');
|
|
assertType(findElement.localVar('v').type, 'int');
|
|
assertType(findNode.simple('v; // marker'), 'int');
|
|
}
|
|
|
|
test_localVariableInference_transitive_topLevel_inferred_lexical() async {
|
|
await resolveTestCode(r'''
|
|
final x = 3;
|
|
main() {
|
|
var v = x;
|
|
v; // marker
|
|
}
|
|
''');
|
|
assertType(findElement.localVar('v').type, 'int');
|
|
assertType(findNode.simple('v; // marker'), 'int');
|
|
}
|
|
|
|
test_localVariableInference_transitive_toplevel_inferred_reversed() async {
|
|
await resolveTestCode(r'''
|
|
main() {
|
|
var v = x;
|
|
v; // marker
|
|
}
|
|
final x = 3;
|
|
''');
|
|
assertType(findElement.localVar('v').type, 'int');
|
|
assertType(findNode.simple('v; // marker'), 'int');
|
|
}
|
|
|
|
test_localVariableInference_transitive_topLevel_lexical() async {
|
|
await resolveTestCode(r'''
|
|
int x = 3;
|
|
main() {
|
|
var v = x;
|
|
v; // marker
|
|
}
|
|
''');
|
|
assertType(findElement.localVar('v').type, 'int');
|
|
assertType(findNode.simple('v; // marker'), 'int');
|
|
}
|
|
|
|
test_localVariableInference_transitive_topLevel_reversed() async {
|
|
await resolveTestCode(r'''
|
|
main() {
|
|
var v = x;
|
|
v; // marker
|
|
}
|
|
int x = 3;
|
|
''');
|
|
assertType(findElement.localVar('v').type, 'int');
|
|
assertType(findNode.simple('v; // marker'), 'int');
|
|
}
|
|
}
|