IDEA-221379 Unexpected "instanceof" keyword completion in annotation

GitOrigin-RevId: 8058445f8b789fecf63058a05b5db1aa0ce39eb1

java/java-impl/src/com/intellij/codeInsight/completion/JavaKeywordCompletion.java

@@ -611,7 +611,8 @@ public class JavaKeywordCompletion {
     if (prev == null) return false;
 
     PsiElement expr = PsiTreeUtil.getParentOfType(prev, PsiExpression.class);
-    if (expr != null && expr.getTextRange().getEndOffset() == prev.getTextRange().getEndOffset()) {
+    if (expr != null && expr.getTextRange().getEndOffset() == prev.getTextRange().getEndOffset() &&
+        PsiTreeUtil.getParentOfType(expr, PsiAnnotation.class) == null) {
       return true;
     }
 

java/java-tests/testData/codeInsight/completion/keywords/noInstanceofInAnnotation.java

@@ -0,0 +1,3 @@
+class Foo {
+  @Language("RegExp" <caret>x) String pattern;
+}

java/java-tests/testSrc/com/intellij/java/codeInsight/completion/KeywordCompletionTest.java

@@ -116,6 +116,7 @@ public class KeywordCompletionTest extends LightCompletionTestCase {
   public void testSpaceAfterInstanceof() { doTest(); }
   public void testInstanceofAfterUnresolved() { doTest(1, "instanceof"); }
   public void testInstanceofAfterStatementStart() { doTest(1, "instanceof"); }
+  public void testNoInstanceofInAnnotation() { doTest(0, "instanceof"); }
 
   public void testInstanceofNegation() {
     configureByTestName();