java completion: don't suggest a variable name after a misspelled keyword (IDEA-215451)

GitOrigin-RevId: 2224a09bdaaee8026dc1ec97cb8884366a26abfd

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

@@ -105,7 +105,9 @@ public class JavaMemberNameCompletionContributor extends CompletionContributor {
       }
     }
 
-    final PsiType type = var.getType();
+    PsiType type = var.getType();
+    if (type instanceof PsiClassType && ((PsiClassType)type).resolve() == null) return;
+    
     SuggestedNameInfo suggestedNameInfo = codeStyleManager.suggestVariableName(variableKind, propertyName, null, type, StringUtil.isEmpty(matcher.getPrefix()));
     suggestedNameInfo = codeStyleManager.suggestUniqueVariableName(suggestedNameInfo, var, false);
     final String[] suggestedNames = suggestedNameInfo.names;

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

@@ -1,5 +1,5 @@
 class Foo {
   void test(Object o) {
-    o <caret>
+    o <caret>x
   }
 }

java/java-tests/testData/codeInsight/completion/normal/SecondMethodParameterName.java

@@ -1,4 +1,4 @@
-public class MyFirstTestClassFoo {
+public class Eee {
 
     void foo(int a, Eee e<caret>){
     }

java/java-tests/testData/codeInsight/completion/normal/SecondMethodParameterName_after.java

@@ -1,4 +1,4 @@
-public class MyFirstTestClassFoo {
+public class Eee {
 
     void foo(int a, Eee eee<caret>){
     }

java/java-tests/testSrc/com/intellij/java/codeInsight/completion/VariablesCompletionTest.groovy

@@ -296,4 +296,15 @@ class FooFoo {
     myFixture.assertPreferredCompletionItems 0, 'materialQualities', 'materialQualities1', 'qualities', 'materialQualityIterable', 'qualityIterable', 'iterable'
   }
 
+  void "test no name suggestions when the type is unresolved because it is actually a mistyped keyword"() {
+    myFixture.configureByText 'a.java', '''
+class C {
+    { 
+      retur Fi<caret>x
+    }
+    }
+'''
+    assert myFixture.completeBasic()?.size() == 0
+  }
+
 }