Add some recent lint rules to analyzer

Change-Id: I962812880b660dd17c821fb4264da28783fa14ac
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/269441
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Commit-Queue: Samuel Rawlins <srawlins@google.com>

pkg/analyzer/analysis_options.yaml

@@ -38,6 +38,12 @@ linter:
     - always_use_package_imports
     - avoid_dynamic_calls
     - avoid_unused_constructor_parameters
+    # Enable after linter 1.31 is released.
+    #- collection_methods_unrelated_type
+    - enable_null_safety
+    - implicit_call_tearoffs
+    - library_annotations
     - unawaited_futures
+    - unnecessary_library_directive
     - unnecessary_parenthesis
     - use_super_parameters

pkg/analyzer/lib/src/generated/parser.dart

@@ -2,8 +2,6 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-library analyzer.parser;
-
 import 'package:_fe_analyzer_shared/src/parser/parser.dart' as fasta;
 import 'package:_fe_analyzer_shared/src/parser/type_info.dart' as fasta;
 import 'package:analyzer/dart/analysis/features.dart';

pkg/analyzer/lib/src/summary/format.dart

@@ -10,8 +10,6 @@
 // The generator sometimes generates unnecessary 'this' references.
 // ignore_for_file: unnecessary_this
 
-library analyzer.src.summary.format;
-
 import 'dart:convert' as convert;
 import 'dart:typed_data' as typed_data;
 

pkg/analyzer/lib/src/summary2/macro_application.dart

@@ -58,7 +58,7 @@ class LibraryMacroApplier {
     libraryBuilder.element.accept(collector);
 
     for (final targetElement in collector.targets) {
-      final targetNode = _linker.elementNodes[targetElement];
+      final targetNode = _linker.elementNodes[targetElement as ElementImpl];
       // TODO(scheglov) support other declarations
       if (targetNode is ClassDeclaration) {
         await performance.runAsync(

pkg/analyzer/test/src/fasta/recovery/partial_code/partial_code_support.dart

@@ -114,13 +114,14 @@ abstract class PartialCodeTest extends AbstractRecoveryTest {
               descriptor, suffixes[i], i + 1, head, tail,
               featureSet: featureSet);
         }
-        if (descriptor.failing != null) {
+        var descriptorFailing = descriptor.failing;
+        if (descriptorFailing != null) {
           test('${descriptor.name}_failingList', () {
-            Set<String> failing = Set.from(descriptor.failing!);
+            var failing = Set.of(descriptorFailing);
             if (includeEof) {
               failing.remove('eof');
             }
-            failing.removeAll(suffixes.map((TestSuffix suffix) => suffix.name));
+            failing.removeAll(suffixes.map((suffix) => suffix.name));
             expect(failing, isEmpty,
                 reason:
                     'There are tests marked as failing that are not being run');

pkg/analyzer/tool/summary/generate.dart

@@ -654,8 +654,6 @@ class _CodeGenerator {
     out("// The generator sometimes generates unnecessary 'this' references.");
     out('// ignore_for_file: unnecessary_this');
     out();
-    out('library analyzer.src.summary.format;');
-    out();
     out("import 'dart:convert' as convert;");
     out("import 'dart:typed_data' as typed_data;");
     out();

pkg/analyzer/tool/test_log_parser/test_log_parser.dart

@@ -1,4 +1,3 @@
-// @dart = 2.9
 // Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
@@ -19,10 +18,10 @@ main(List<String> args) async {
   int index = 0;
   final int expectedPrefixLength = 'Expected: '.length;
   final int actualPrefixLength = 'Actual: '.length;
-  TestResult currentResult;
+  TestResult? currentResult;
   Map<String, List<TestResult>> testsByExpectedAndActual =
       <String, List<TestResult>>{};
-  Map<String, List<TestResult>> testsByStackTrace =
+  Map<String?, List<TestResult>> testsByStackTrace =
       <String, List<TestResult>>{};
   while (index < output.length) {
     String currentLine = output[index];
@@ -53,7 +52,7 @@ main(List<String> args) async {
         }
         if (hasStackTrace) {
           currentResult.stackTrace = output.sublist(index + 1, endIndex - 2);
-          String traceLine = currentResult.traceLine;
+          var traceLine = currentResult.traceLine;
           testsByStackTrace
               .putIfAbsent(traceLine, () => <TestResult>[])
               .add(currentResult);
@@ -68,11 +67,9 @@ main(List<String> args) async {
   List<String> missingCodes = <String>[];
   for (List<TestResult> results in testsByExpectedAndActual.values) {
     for (TestResult result in results) {
-      String message = result.message;
-      if (message != null) {
-        if (message.startsWith('Bad state: Unable to convert (')) {
-          missingCodes.add(message);
-        }
+      var message = result.message;
+      if (message.startsWith('Bad state: Unable to convert (')) {
+        missingCodes.add(message);
       }
     }
   }
@@ -82,15 +79,11 @@ main(List<String> args) async {
   List<String> keys = testsByExpectedAndActual.keys.toList();
   keys.sort();
   for (String key in keys) {
-    List<TestResult> results = testsByExpectedAndActual[key];
+    var results = testsByExpectedAndActual[key]!;
     results.sort((first, second) => first.testName.compareTo(second.testName));
     print('$key (${results.length})');
     for (TestResult result in results) {
-      if (result.message == null) {
-        print('  ${result.testName}');
-      } else {
-        print('  ${result.testName} (${result.message})');
-      }
+      print('  ${result.testName} (${result.message})');
     }
   }
   if (missingCodes.isNotEmpty) {
@@ -104,12 +97,13 @@ main(List<String> args) async {
   if (testsByStackTrace.isNotEmpty) {
     print('');
     print('Unique stack traces (${testsByStackTrace.length}):');
-    List<String> keys = testsByStackTrace.keys.toList();
+    var keys = testsByStackTrace.keys.toList();
     keys.sort((first, second) {
-      return testsByStackTrace[second].length - testsByStackTrace[first].length;
+      return testsByStackTrace[second]!.length -
+          testsByStackTrace[first]!.length;
     });
-    for (String traceLine in keys) {
-      print('  (${testsByStackTrace[traceLine].length}) $traceLine');
+    for (var traceLine in keys) {
+      print('  (${testsByStackTrace[traceLine]!.length}) $traceLine');
     }
   }
 }
@@ -121,14 +115,14 @@ class TestResult {
   String testName;
   String expected;
   String actual;
-  String message;
-  List<String> stackTrace;
+  late String message;
+  late List<String> stackTrace;
 
   TestResult(this.testName, this.expected, this.actual);
 
-  String get traceLine {
+  String? get traceLine {
     for (int i = 0; i < stackTrace.length; i++) {
-      String traceLine = stackTrace[i];
+      var traceLine = stackTrace[i];
       if (traceLine.startsWith(framePattern) &&
           traceLine.contains('(package:')) {
         if (traceLine.contains('ResolutionApplier._get') ||