exceptions collection: don't visit anonymous class body (IDEA-198967)

simple visit of expression list doesn't work as walking visitor starts to go down when it starts an element and element has no children

java/java-psi-impl/src/com/intellij/codeInsight/ExceptionUtil.java

@@ -65,14 +65,13 @@ public class ExceptionUtil {
   @NotNull
   public static List<PsiClassType> getThrownExceptions(@NotNull PsiElement element) {
     List<PsiClassType> result = new ArrayList<>();
-    element.accept(new JavaRecursiveElementWalkingVisitor() {
+    class Visitor extends JavaRecursiveElementWalkingVisitor {
       @Override
       public void visitAnonymousClass(PsiAnonymousClass aClass) {
         final PsiExpressionList argumentList = aClass.getArgumentList();
-        if (argumentList != null){
-          super.visitExpressionList(argumentList);
+        if (argumentList != null && !argumentList.isEmpty()) {
+          argumentList.accept(new Visitor());
         }
-        super.visitAnonymousClass(aClass);
       }
 
       @Override
@@ -128,7 +127,8 @@ public class ExceptionUtil {
         addExceptions(result, getTryExceptions(statement));
         // do not call super: try exception goes into try body recursively
       }
-    });
+    }
+    element.accept(new Visitor());
     return result;
   }
 

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/exceptionHighlighting/IgnoreExceptionThrownInAnonymous.java

@@ -0,0 +1,30 @@
+import java.io.IOException;
+import java.util.concurrent.Callable;
+
+class MyTest {
+  public static void main() {
+    try {
+      new Callable() {
+        @Override
+        public Object call() throws IOException {
+          throw new IOException();
+        }
+      };
+      
+      new Foo("") {
+        @Override
+        public Object call() throws IOException {
+          throw new IOException();
+        }
+      };
+    }
+    catch (Exception e) {
+      throw e;
+    }
+  }
+  
+  static abstract class Foo implements Callable {
+    protected Foo(Object o) {
+    }
+  }
+}

java/java-tests/testSrc/com/intellij/java/codeInsight/daemon/lambda/UnhandledExceptionsHighlightingTest.kt

@@ -13,6 +13,10 @@ class UnhandledExceptionsHighlightingTest : LightDaemonAnalyzerTestCase() {
     doTest(false)
   }
 
+  fun testIgnoreExceptionThrownInAnonymous() {
+    doTest(false)
+  }
+
   private fun doTest(warnings: Boolean) {
     LanguageLevelProjectExtension.getInstance(getJavaFacade().project).languageLevel = LanguageLevel.JDK_1_8
     IdeaTestUtil.setTestVersion(JavaSdkVersion.JDK_1_8, getModule(), testRootDisposable)