method references: allow access to protected methods through super (IDEA-217862)

GitOrigin-RevId: f1d86f6127a64146e87998423f3034e38a46409c

java/java-psi-impl/src/com/intellij/psi/impl/source/tree/java/MethodReferenceResolver.java

@@ -144,7 +144,7 @@ public class MethodReferenceResolver implements ResolveCache.PolyVariantContextR
         processor.setIsConstructor(isConstructor);
         processor.setName(isConstructor ? containingClass.getName() : element.getText());
         final PsiExpression expression = reference.getQualifierExpression();
-        if (expression == null || !(expression.getType() instanceof PsiArrayType)) {
+        if (expression == null || !(expression.getType() instanceof PsiArrayType) && !(expression instanceof PsiSuperExpression)) {
           processor.setAccessClass(containingClass);
         }
 

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/advHighlighting8/PackagePrivateAndSuperMethodReference.java

@@ -0,0 +1,11 @@
+package b;
+
+import a.A;
+
+import java.util.function.Consumer;
+
+class B extends A {
+  public Consumer<Integer> callFoo() {
+    return super::foo;
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/lambda2methodReference/afterAccessibleInSuper.java

@@ -0,0 +1,6 @@
+// "Replace lambda with method reference" "true"
+import java.util.Random;
+import java.util.function.Function;
+class Bar extends Random {
+    Function<Integer, Integer>  s = super::next;
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/lambda2methodReference/beforeAccessibleInSuper.java

@@ -1,6 +1,6 @@
-// "Replace lambda with method reference" "false"
+// "Replace lambda with method reference" "true"
 import java.util.Random;
 import java.util.function.Function;
 class Bar extends Random {
-    Function<Integer , Integer>  s = (i) -> super.ne<caret>xt(i);
+    Function<Integer, Integer>  s = (i) -> super.ne<caret>xt(i);
 }

java/java-tests/testSrc/com/intellij/java/codeInsight/daemon/lambda/AdvHighlighting8Test.java

@@ -75,6 +75,16 @@ public class AdvHighlighting8Test extends LightJavaCodeInsightFixtureTestCase {
     doTest();
   }
 
+  public void testPackagePrivateAndSuperMethodReference() {
+    myFixture.addClass("package a;\n" +
+                       "public class A {\n" +
+                       "    protected void foo(int a) {\n" +
+                       "        System.out.println(a);\n" +
+                       "    }\n" +
+                       "}");
+    doTest();
+  }
+
   private void doTest() {
     myFixture.testHighlighting(false, false, false, getTestName(false) + ".java");
   }