linter: analyzer_public_api: support annotated getters and setters

Change-Id: I84d0f637c7f276c99360675a0225fa3da93a0af7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/434527
Reviewed-by: Paul Berry <[email protected]>
Commit-Queue: Samuel Rawlins <[email protected]>

Author: srawlins

pkg/linter/lib/src/rules/analyzer_public_api.dart

@@ -384,6 +384,18 @@ extension on Element {
     ) when variable3.isInAnalyzerPublicApi) {
       return true;
     }
+    if (this case PropertyInducingElement(
+      isSynthetic: true,
+      :var getter2?,
+    ) when getter2.isInAnalyzerPublicApi) {
+      return true;
+    }
+    if (this case PropertyInducingElement(
+      isSynthetic: true,
+      :var setter2?,
+    ) when setter2.isInAnalyzerPublicApi) {
+      return true;
+    }
     if (this case Annotatable(
       metadata: Metadata(:var annotations),
     ) when annotations.any(_isPublicApiAnnotation)) {

pkg/linter/test/rules/analyzer_public_api_test.dart

@@ -2187,6 +2187,42 @@ export 'src/file2.dart';
     await assertNoDiagnosticsInFile(libFile);
   }
 
+  test_exportsNonPublicName_ignoredIfAnnotatedPublic_getter() async {
+    newFile(libSrcFile, '''
+class AnalyzerPublicApi {
+  const AnalyzerPublicApi();
+}
+''');
+    newFile(libSrcFile2, '''
+import 'file.dart';
+
+@AnalyzerPublicApi()
+int get x => 7;
+''');
+    newFile(libFile, '''
+export 'src/file2.dart';
+''');
+    await assertNoDiagnosticsInFile(libFile);
+  }
+
+  test_exportsNonPublicName_ignoredIfAnnotatedPublic_setter() async {
+    newFile(libSrcFile, '''
+class AnalyzerPublicApi {
+  const AnalyzerPublicApi();
+}
+''');
+    newFile(libSrcFile2, '''
+import 'file.dart';
+
+@AnalyzerPublicApi()
+set x(int value) {}
+''');
+    newFile(libFile, '''
+export 'src/file2.dart';
+''');
+    await assertNoDiagnosticsInFile(libFile);
+  }
+
   test_exportsNonPublicName_ignoredIfHidden() async {
     newFile(libSrcFile, '''
 class B {}