More lints (#70500)

analysis_options.yaml

@@ -83,7 +83,7 @@ linter:
     - avoid_returning_null_for_void
     # - avoid_returning_this # there are plenty of valid reasons to return this
     # - avoid_setters_without_getters # not yet tested
-    # - avoid_shadowing_type_parameters # not yet tested
+    - avoid_shadowing_type_parameters
     - avoid_single_cascade_in_expression_statements
     - avoid_slow_async_io
     # - avoid_type_to_string # we do this commonly
@@ -103,7 +103,7 @@ linter:
     # - comment_references # blocked on https://github.com/flutter/flutter/issues/20765
     # - constant_identifier_names # needs an opt-out https://github.com/dart-lang/linter/issues/204
     - control_flow_in_finally
-    # - curly_braces_in_flow_control_structures # not yet tested
+    # - curly_braces_in_flow_control_structures # not required by flutter style
     # - diagnostic_describe_all_properties # not yet tested
     - directives_ordering
     # - do_not_use_environment # we do this commonly
@@ -117,22 +117,22 @@ linter:
     - implementation_imports
     # - invariant_booleans # too many false positives: https://github.com/dart-lang/linter/issues/811
     - iterable_contains_unrelated_type
-    # - join_return_with_assignment # not yet tested
+    # - join_return_with_assignment # not required by flutter style
     - leading_newlines_in_multiline_strings
     - library_names
     - library_prefixes
-    # - lines_longer_than_80_chars # not yet tested
+    # - lines_longer_than_80_chars # not required by flutter style
     - list_remove_unrelated_type
     # - literal_only_boolean_expressions # too many false positives: https://github.com/dart-lang/sdk/issues/34181
     # - missing_whitespace_between_adjacent_strings # not yet tested
     - no_adjacent_strings_in_list
     # - no_default_cases # too many false positives
     - no_duplicate_case_values
-    # - no_logic_in_create_state # not yet tested
-    # - no_runtimeType_toString # not yet tested
+    - no_logic_in_create_state
+    # - no_runtimeType_toString # ok in tests; we enable this only in packages/
     - non_constant_identifier_names
     - null_check_on_nullable_type_parameter
-    # - null_closures  # not yet tested
+    # - null_closures # not required by flutter style
     # - omit_local_variable_types # opposite of always_specify_types
     # - one_member_abstracts # too many false positives
     # - only_throw_errors # https://github.com/flutter/flutter/issues/5792
@@ -143,14 +143,14 @@ linter:
     # - parameter_assignments # we do this commonly
     - prefer_adjacent_string_concatenation
     - prefer_asserts_in_initializer_lists
-    # - prefer_asserts_with_message # not yet tested
+    # - prefer_asserts_with_message # not required by flutter style
     - prefer_collection_literals
     - prefer_conditional_assignment
     - prefer_const_constructors
     - prefer_const_constructors_in_immutables
     - prefer_const_declarations
     - prefer_const_literals_to_create_immutables
-    # - prefer_constructors_over_static_methods # not yet tested
+    # - prefer_constructors_over_static_methods # far too many false positives
     - prefer_contains
     # - prefer_double_quotes # opposite of prefer_single_quotes
     - prefer_equal_for_default_values

dev/benchmarks/macrobenchmarks/lib/src/filtered_child_animation.dart

@@ -12,34 +12,34 @@ enum FilterType {
 }
 
 class FilteredChildAnimationPage extends StatefulWidget {
-  const FilteredChildAnimationPage(
-      this._filterType,
-      [
-        this._complexChild = true,
-        this._useRepaintBoundary = true,
+  const FilteredChildAnimationPage(this.initialFilterType, [
+    this.initialComplexChild = true,
+    this.initialUseRepaintBoundary = true,
   ]);
 
-  final FilterType _filterType;
-  final bool _complexChild;
-  final bool _useRepaintBoundary;
+  final FilterType initialFilterType;
+  final bool initialComplexChild;
+  final bool initialUseRepaintBoundary;
 
   @override
-  _FilteredChildAnimationPageState createState() => _FilteredChildAnimationPageState(_filterType, _complexChild, _useRepaintBoundary);
+  _FilteredChildAnimationPageState createState() => _FilteredChildAnimationPageState();
 }
 
 class _FilteredChildAnimationPageState extends State<FilteredChildAnimationPage> with SingleTickerProviderStateMixin {
-  _FilteredChildAnimationPageState(this._filterType, this._complexChild, this._useRepaintBoundary);
-
   AnimationController _controller;
-  bool _useRepaintBoundary;
-  bool _complexChild;
-  FilterType _filterType;
   final GlobalKey _childKey = GlobalKey(debugLabel: 'child to animate');
   Offset _childCenter = Offset.zero;
 
+  FilterType _filterType;
+  bool _complexChild;
+  bool _useRepaintBoundary;
+
   @override
   void initState() {
     super.initState();
+    _filterType = widget.initialFilterType;
+    _complexChild = widget.initialComplexChild;
+    _useRepaintBoundary = widget.initialUseRepaintBoundary;
     WidgetsBinding.instance.addPostFrameCallback((_) {
       final RenderBox childBox = _childKey.currentContext.findRenderObject() as RenderBox;
       _childCenter = childBox.paintBounds.center;

dev/benchmarks/macrobenchmarks/lib/src/web/recorder.dart

@@ -528,11 +528,16 @@ class _WidgetBuildRecorderHost extends StatefulWidget {
   final WidgetBuildRecorder recorder;
 
   @override
-  State<StatefulWidget> createState() =>
-      recorder._hostState = _WidgetBuildRecorderHostState();
+  State<StatefulWidget> createState() => _WidgetBuildRecorderHostState();
 }
 
 class _WidgetBuildRecorderHostState extends State<_WidgetBuildRecorderHost> {
+  @override
+  void initState() {
+    super.initState();
+    widget.recorder._hostState = this;
+  }
+
   // This is just to bypass the @protected on setState.
   void _setStateTrampoline() {
     setState(() {});

packages/analysis_options.yaml

-# Take our settings from the repo's main analysis_options.yaml file, but include
-# an additional rule to validate that public members are documented.
+# Take our settings from the repo's main analysis_options.yaml file, and include
+# additional rules that are specific to production code.
 
 include: ../analysis_options.yaml
 
 linter:
   rules:
-    - public_member_api_docs
+    - public_member_api_docs # see https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo#documentation-dartdocs-javadocs-etc
+    - no_runtimeType_toString # use objectRuntimeType from package:foundation

packages/flutter/analysis_options.yaml

@@ -5,7 +5,4 @@ include: ../analysis_options.yaml
 analyzer:
   errors:
     always_require_non_null_named_parameters: false # not needed with nnbd
-    type_init_formals: false # https://github.com/dart-lang/linter/issues/2192
-    unrelated_type_equality_checks: false # https://github.com/dart-lang/linter/issues/2196
-    void_checks: false # https://github.com/dart-lang/linter/issues/2185
     unnecessary_null_comparison: false # Turned off until null-safe rollout is complete.

packages/flutter/lib/src/cupertino/date_picker.dart

@@ -369,7 +369,7 @@ class CupertinoDatePicker extends StatefulWidget {
   final Color? backgroundColor;
 
   @override
-  State<StatefulWidget> createState() {
+  State<StatefulWidget> createState() { // ignore: no_logic_in_create_state, https://github.com/flutter/flutter/issues/70499
     // The `time` mode and `dateAndTime` mode of the picker share the time
     // columns, so they are placed together to one state.
     // The `date` mode has different children and is implemented in a different

packages/flutter/lib/src/cupertino/search_field.dart

@@ -136,7 +136,7 @@ class CupertinoSearchTextField extends StatefulWidget {
     this.backgroundColor,
     this.borderRadius,
     this.padding = const EdgeInsetsDirectional.fromSTEB(3.8, 8, 5, 8),
-    Color this.itemColor = CupertinoColors.secondaryLabel,
+    this.itemColor = CupertinoColors.secondaryLabel,
     this.itemSize = 20.0,
     this.prefixInsets = const EdgeInsetsDirectional.fromSTEB(6, 0, 0, 4),
     this.suffixInsets = const EdgeInsetsDirectional.fromSTEB(0, 0, 5, 2),

packages/flutter/lib/src/rendering/mouse_cursor.dart

@@ -375,7 +375,7 @@ class SystemMouseCursor extends MouseCursor {
   final String kind;
 
   @override
-  String get debugDescription => '$runtimeType($kind)';
+  String get debugDescription => '${objectRuntimeType(this, 'SystemMouseCursor')}($kind)';
 
   @override
   @protected

packages/flutter/lib/src/widgets/framework.dart

@@ -936,7 +936,7 @@ abstract class StatefulWidget extends Widget {
   /// [State] objects.
   @protected
   @factory
-  State createState();
+  State createState(); // ignore: no_logic_in_create_state, this is the original sin
 }
 
 /// Tracks the lifecycle of [State] objects when asserts are enabled.

packages/flutter/lib/src/widgets/implicit_animations.dart

@@ -297,7 +297,7 @@ abstract class ImplicitlyAnimatedWidget extends StatefulWidget {
   final VoidCallback? onEnd;
 
   @override
-  ImplicitlyAnimatedWidgetState<ImplicitlyAnimatedWidget> createState();
+  ImplicitlyAnimatedWidgetState<ImplicitlyAnimatedWidget> createState(); // ignore: no_logic_in_create_state, https://github.com/dart-lang/linter/issues/2345
 
   @override
   void debugFillProperties(DiagnosticPropertiesBuilder properties) {

packages/flutter/lib/src/widgets/unique_widget.dart

@@ -28,7 +28,7 @@ abstract class UniqueWidget<T extends State<StatefulWidget>> extends StatefulWid
        super(key: key);
 
   @override
-  T createState();
+  T createState(); // ignore: no_logic_in_create_state, https://github.com/dart-lang/linter/issues/2345
 
   /// The state for the unique inflated instance of this widget.
   ///

packages/flutter/test/foundation/synchronous_future_test.dart

@@ -27,8 +27,9 @@ void main() {
     expect(await stream.single, equals(42));
 
     bool ranAction = false;
-    final Future<int> completeResult = future.whenComplete(() {
+    final Future<int> completeResult = future.whenComplete(() { // ignore: void_checks, https://github.com/dart-lang/linter/issues/1675
       ranAction = true;
+      // verify that whenComplete does NOT propagate its return value:
       return Future<int>.value(31);
     });
 
@@ -39,7 +40,7 @@ void main() {
 
     Object? exception;
     try {
-      await future.whenComplete(() {
+      await future.whenComplete(() { // ignore: void_checks, https://github.com/dart-lang/linter/issues/1675
         throw ArgumentError();
       });
       // Unreached.

packages/flutter/test/painting/mocks_for_image_cache.dart

@@ -24,7 +24,7 @@ class TestImageInfo implements ImageInfo {
   final int value;
 
   @override
-  String toString() => '$runtimeType($value)';
+  String toString() => '${objectRuntimeType(this, 'TestImageInfo')}($value)';
 
   @override
   TestImageInfo clone() {
@@ -81,7 +81,7 @@ class TestImageProvider extends ImageProvider<int> {
   }
 
   @override
-  String toString() => '$runtimeType($key, $imageValue)';
+  String toString() => '${objectRuntimeType(this, 'TestImageProvider')}($key, $imageValue)';
 }
 
 class FailingTestImageProvider extends TestImageProvider {

packages/flutter/test/widgets/implicit_animations_test.dart

@@ -374,7 +374,7 @@ class TestAnimatedWidget extends StatefulWidget {
   final State<StatefulWidget> state;
 
   @override
-  State<StatefulWidget> createState() => state;
+  State<StatefulWidget> createState() => state; // ignore: no_logic_in_create_state, this test predates the lint
 }
 
 abstract class _TestAnimatedWidgetState extends State<TestAnimatedWidget> {

packages/flutter/test/widgets/scroll_physics_test.dart

@@ -29,8 +29,8 @@ class TestScrollPhysics extends ScrollPhysics {
   @override
   String toString() {
     if (parent == null)
-      return '$runtimeType($name)';
-    return '$runtimeType($name) -> $parent';
+      return '${objectRuntimeType(this, 'TestScrollPhysics')}($name)';
+    return '${objectRuntimeType(this, 'TestScrollPhysics')}($name) -> $parent';
   }
 }
 

packages/flutter/test/widgets/semantics_tester.dart

@@ -349,7 +349,7 @@ class TestSemantics {
   String toString([ int indentAmount = 0 ]) {
     final String indent = '  ' * indentAmount;
     final StringBuffer buf = StringBuffer();
-    buf.writeln('$indent$runtimeType(');
+    buf.writeln('$indent${objectRuntimeType(this, 'TestSemantics')}(');
     if (id != null)
       buf.writeln('$indent  id: $id,');
     if (flags is int && flags != 0 || flags is List<SemanticsFlag> && (flags as List<SemanticsFlag>).isNotEmpty)

packages/flutter/test/widgets/widget_inspector_test.dart

@@ -114,7 +114,7 @@ class CyclicDiagnostic extends DiagnosticableTree {
   final String name;
 
   @override
-  String toStringShort() => '$runtimeType-$name';
+  String toStringShort() => '${objectRuntimeType(this, 'CyclicDiagnistic')}-$name';
 
   // We have to override toString to avoid the toString call itself triggering a
   // stack overflow.

packages/flutter_driver/lib/src/driver/driver.dart

@@ -777,7 +777,7 @@ class DriverOffset {
   final double dy;
 
   @override
-  String toString() => '$runtimeType($dx, $dy)';
+  String toString() => '$runtimeType($dx, $dy)'; // ignore: no_runtimetype_tostring, can't access package:flutter here to use objectRuntimeType
 
   @override
   bool operator ==(Object other) {

packages/flutter_localizations/test/widgets_test.dart

@@ -52,7 +52,7 @@ class SyncTestLocalizationsDelegate extends LocalizationsDelegate<TestLocalizati
   }
 
   @override
-  String toString() => '$runtimeType($prefix)';
+  String toString() => '${objectRuntimeType(this, 'SyncTestLocalizationsDelegate')}($prefix)';
 }
 
 class AsyncTestLocalizationsDelegate extends LocalizationsDelegate<TestLocalizations> {
@@ -74,7 +74,7 @@ class AsyncTestLocalizationsDelegate extends LocalizationsDelegate<TestLocalizat
   }
 
   @override
-  String toString() => '$runtimeType($prefix)';
+  String toString() => '${objectRuntimeType(this, 'AsyncTestLocalizationsDelegate')}($prefix)';
 }
 
 class MoreLocalizations {