[java-stubs] TypeInfo: fix annotation parsing for multi-parameter generic types (IDEA-356112)

GitOrigin-RevId: 154294caab47747e81b80de26ca1bffd919fce98

java/java-psi-impl/src/com/intellij/psi/impl/cache/TypeInfo.java

@@ -491,12 +491,12 @@ public /*sealed*/ abstract class TypeInfo {
       else if (refTokenType == JavaElementType.REFERENCE_PARAMETER_LIST) {
         List<LighterASTNode> subTypes = LightTreeUtil.getChildrenOfType(tree, refChild, JavaElementType.TYPE);
         if (!subTypes.isEmpty()) {
-          byte[] newPrefix = Arrays.copyOf(prefix, prefix.length + 2);
-          newPrefix[prefix.length] = TypeAnnotationContainer.Collector.TYPE_ARGUMENT;
           for (int i = 0; i < subTypes.size(); i++) {
-            newPrefix[prefix.length + 1] = (byte)i;
             TypeInfo componentInfo = info.genericComponent(i);
             if (componentInfo != null) {
+              byte[] newPrefix = Arrays.copyOf(prefix, prefix.length + 2);
+              newPrefix[prefix.length] = TypeAnnotationContainer.Collector.TYPE_ARGUMENT;
+              newPrefix[prefix.length + 1] = (byte)i;
               collectAnnotations(componentInfo, collector, tree, subTypes.get(i), newPrefix);
             }
           }

java/java-tests/testSrc/com/intellij/psi/impl/cache/TypeInfoTest.java

@@ -72,6 +72,10 @@ public class TypeInfoTest extends LightJavaCodeInsightFixtureTestCase {
   public void testGenericNested() {
     doTest("X1<@A2 X2<? extends @A3 X3>>.@A4 X4<@A5 X5,@A6 X6 @A7 []>");
   }
+  
+  public void testGenericNested2() {
+    doTest("List1<Outer.@Anno2 Middle.@Anno @Anno1 Inner,Outer.@Anno2 Middle.@Anno1 @Anno2 Inner>");
+  }
 
   private void doTest(String typeText) {
     String javaFile = "class X { " + typeText + " x; }\n" + USED_CLASSES;