Paul Berry
2cac8637d6
Change-Id: I875493ff504f094ade2818f29539525fdd75a808 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/112020 Reviewed-by: Konstantin Shcheglov <scheglov@google.com> Commit-Queue: Paul Berry <paulberry@google.com>
108 lines
3.4 KiB
Dart
108 lines
3.4 KiB
Dart
// Copyright (c) 2019, 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 'dart:io';
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import 'package:analyzer/dart/analysis/features.dart';
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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/type_system.dart';
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import 'package:analyzer/src/dart/analysis/testing_data.dart';
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import 'package:analyzer/src/dart/element/type.dart';
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import 'package:analyzer/src/dart/resolver/flow_analysis_visitor.dart';
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import 'package:analyzer/src/util/ast_data_extractor.dart';
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import 'package:front_end/src/testing/id.dart' show ActualData, Id;
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import 'package:front_end/src/testing/id_testing.dart';
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import 'package:test/test.dart';
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import '../util/id_testing_helper.dart';
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main(List<String> args) async {
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Directory dataDir = new Directory.fromUri(Platform.script
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.resolve('../../../front_end/test/flow_analysis/nullability/data'));
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await runTests(dataDir,
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args: args,
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supportedMarkers: sharedMarkers,
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createUriForFileName: createUriForFileName,
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onFailure: onFailure,
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runTest:
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runTestFor(const _NullabilityDataComputer(), [analyzerNnbdConfig]));
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}
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class FlowTestBase {
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FlowAnalysisResult flowResult;
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/// Resolve the given [code] and track nullability in the unit.
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Future<void> trackCode(String code) async {
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if (await checkTests(
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code,
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const _NullabilityDataComputer(),
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FeatureSet.forTesting(
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sdkVersion: '2.2.2', additionalFeatures: [Feature.non_nullable]))) {
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fail('Failure(s)');
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}
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}
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}
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class _NullabilityDataComputer extends DataComputer<String> {
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const _NullabilityDataComputer();
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@override
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DataInterpreter<String> get dataValidator =>
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const _NullabilityDataInterpreter();
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@override
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void computeUnitData(TestingData testingData, CompilationUnit unit,
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Map<Id, ActualData<String>> actualMap) {
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_NullabilityDataExtractor(unit.declaredElement.source.uri, actualMap,
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unit.declaredElement.context.typeSystem)
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.run(unit);
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}
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}
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class _NullabilityDataExtractor extends AstDataExtractor<String> {
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final TypeSystem _typeSystem;
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_NullabilityDataExtractor(
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Uri uri, Map<Id, ActualData<String>> actualMap, this._typeSystem)
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: super(uri, actualMap);
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@override
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String computeNodeValue(Id id, AstNode node) {
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if (node is SimpleIdentifier && node.inGetterContext()) {
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var element = node.staticElement;
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if (element is LocalVariableElement || element is ParameterElement) {
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TypeImpl promotedType = node.staticType;
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TypeImpl declaredType = (element as VariableElement).type;
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var isPromoted = promotedType != declaredType;
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if (isPromoted &&
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_typeSystem.isNullable(declaredType) &&
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!_typeSystem.isNullable(promotedType)) {
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return 'nonNullable';
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}
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}
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}
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return null;
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}
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}
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class _NullabilityDataInterpreter implements DataInterpreter<String> {
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const _NullabilityDataInterpreter();
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@override
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String getText(String actualData) => actualData;
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@override
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String isAsExpected(String actualData, String expectedData) {
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if (actualData == expectedData) {
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return null;
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} else {
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return 'Expected $expectedData, got $actualData';
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}
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}
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@override
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bool isEmpty(String actualData) => actualData.isEmpty;
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}
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