add new lints of linter-0.1.44 and enable unnecessary_parenthesis (#15585)

analysis_options.yaml

@@ -63,6 +63,7 @@ linter:
     - avoid_init_to_null
     - avoid_null_checks_in_equality_operators
     # - avoid_positional_boolean_parameters # not yet tested
+    # - avoid_relative_lib_imports # not yet tested
     - avoid_return_types_on_setters
     # - avoid_returning_null # we do this commonly
     # - avoid_returning_this # https://github.com/dart-lang/linter/issues/842
@@ -141,6 +142,7 @@ linter:
     - unnecessary_null_aware_assignments
     - unnecessary_null_in_if_null_operators
     - unnecessary_overrides
+    - unnecessary_parenthesis
     # - unnecessary_statements # not yet tested
     - unnecessary_this
     - unrelated_type_equality_checks

analysis_options_repo.yaml

@@ -56,6 +56,7 @@ linter:
     - avoid_init_to_null
     - avoid_null_checks_in_equality_operators
     # - avoid_positional_boolean_parameters # not yet tested
+    # - avoid_relative_lib_imports # not yet tested
     - avoid_return_types_on_setters
     # - avoid_returning_null # we do this commonly
     # - avoid_returning_this # https://github.com/dart-lang/linter/issues/842
@@ -134,6 +135,7 @@ linter:
     - unnecessary_null_aware_assignments
     - unnecessary_null_in_if_null_operators
     - unnecessary_overrides
+    - unnecessary_parenthesis
     # - unnecessary_statements # not yet tested
     - unnecessary_this
     - unrelated_type_equality_checks

packages/flutter/lib/src/material/slider_theme.dart

@@ -754,7 +754,7 @@ class PaddleSliderValueIndicatorShape extends SliderComponentShape {
     if (bottomRight.dx > parentBox.size.width - edgeMargin) {
       shift = parentBox.size.width - bottomRight.dx - edgeMargin;
     }
-    shift = (scale == 0.0 ? 0.0 : shift / scale);
+    shift = scale == 0.0 ? 0.0 : shift / scale;
     return shift;
   }
 

packages/flutter_tools/lib/src/ios/mac.dart

@@ -248,7 +248,7 @@ Future<XcodeBuildResult> buildXcodeProject({
       appIosDirectory: appDirectory,
       iosEngineDir: flutterFrameworkDir(buildInfo.mode),
       isSwift: app.isSwift,
-      flutterPodChanged: (previousGeneratedXcconfig != currentGeneratedXcconfig),
+      flutterPodChanged: previousGeneratedXcconfig != currentGeneratedXcconfig,
     );
   }
 

packages/flutter_tools/lib/src/vscode/vscode.dart

@@ -175,7 +175,7 @@ class VsCode {
 
   @override
   String toString() =>
-      'VS Code ($version)${(_extensionVersion != Version.unknown ? ', Dart Code ($_extensionVersion)' : '')}';
+      'VS Code ($version)${_extensionVersion != Version.unknown ? ', Dart Code ($_extensionVersion)' : ''}';
 
   static String _getVersionFromPackageJson(String packageJsonPath) {
     if (!fs.isFileSync(packageJsonPath))

packages/flutter_tools/test/android/android_workflow_test.dart

@@ -42,7 +42,7 @@ void main() {
     MockAndroidSdk.createSdkDirectory();
     when(sdk.sdkManagerPath).thenReturn('/foo/bar/sdkmanager');
     final AndroidWorkflow androidWorkflow = new AndroidWorkflow();
-    final LicensesAccepted result = await(androidWorkflow.licensesAccepted);
+    final LicensesAccepted result = await androidWorkflow.licensesAccepted;
     expect(result, equals(LicensesAccepted.unknown));
     expect(processManager.commands.first, equals('/foo/bar/sdkmanager'));
     expect(processManager.commands.last, equals('--licenses'));
@@ -63,7 +63,7 @@ void main() {
     ]);
 
     final AndroidWorkflow androidWorkflow = new AndroidWorkflow();
-    final LicensesAccepted result = await(androidWorkflow.licensesAccepted);
+    final LicensesAccepted result = await androidWorkflow.licensesAccepted;
     expect(result, equals(LicensesAccepted.all));
   }, overrides: <Type, Generator>{
     AndroidSdk: () => sdk,
@@ -83,7 +83,7 @@ void main() {
     ]);
 
     final AndroidWorkflow androidWorkflow = new AndroidWorkflow();
-    final LicensesAccepted result = await(androidWorkflow.licensesAccepted);
+    final LicensesAccepted result = await androidWorkflow.licensesAccepted;
     expect(result, equals(LicensesAccepted.some));
   }, overrides: <Type, Generator>{
     AndroidSdk: () => sdk,
@@ -103,7 +103,7 @@ void main() {
     ]);
 
     final AndroidWorkflow androidWorkflow = new AndroidWorkflow();
-    final LicensesAccepted result = await(androidWorkflow.licensesAccepted);
+    final LicensesAccepted result = await androidWorkflow.licensesAccepted;
     expect(result, equals(LicensesAccepted.none));
   }, overrides: <Type, Generator>{
     AndroidSdk: () => sdk,