Shorten References: Skip companion receivers on callable references

This is temporary fix due to KT-13934 which prevents resolution
of references like X::foo where foo is a member or extension
of X companion object

idea/idea-core/src/org/jetbrains/kotlin/idea/core/ShortenReferences.kt

@@ -603,6 +603,10 @@ class ShortenReferences(val options: (KtElement) -> Options = { Options.DEFAULT
         }
 
         override fun analyzeQualifiedElement(element: KtDotQualifiedExpression, bindingContext: BindingContext): AnalyzeQualifiedElementResult {
+            val parent = element.parent
+            // TODO: Delete this code when KT-13934 is fixed
+            if (parent is KtCallableReferenceExpression && parent.receiverExpression == element) return AnalyzeQualifiedElementResult.Skip
+
             val receiver = element.receiverExpression
 
             if (PsiTreeUtil.getParentOfType(
@@ -616,7 +620,7 @@ class ShortenReferences(val options: (KtElement) -> Options = { Options.DEFAULT
 
             if (receiverTarget.companionObjectDescriptor != selectorTarget) return AnalyzeQualifiedElementResult.Skip
 
-            val selectorsSelector = (element.parent as? KtDotQualifiedExpression)?.selectorExpression
+            val selectorsSelector = (parent as? KtDotQualifiedExpression)?.selectorExpression
                                     ?: return AnalyzeQualifiedElementResult.ShortenNow
 
             val selectorsSelectorTarget = selectorsSelector.singleTarget(bindingContext) ?: return AnalyzeQualifiedElementResult.Skip

idea/testData/shortenRefs/callableRefsOnCompanion.kt

@@ -0,0 +1,20 @@
+package test
+
+class A {
+    companion object {
+        fun foo() {
+
+        }
+    }
+}
+
+fun A.Companion.bar() {
+
+}
+
+fun test() {
+    <selection>A.Companion::foo
+    A.Companion::bar
+    (A.Companion)::foo
+    (A.Companion)::bar</selection>
+}

idea/testData/shortenRefs/callableRefsOnCompanion.kt.after

@@ -0,0 +1,20 @@
+package test
+
+class A {
+    companion object {
+        fun foo() {
+
+        }
+    }
+}
+
+fun A.Companion.bar() {
+
+}
+
+fun test() {
+    A.Companion::foo
+    A.Companion::bar
+    (A)::foo
+    (A)::bar
+}

idea/tests/org/jetbrains/kotlin/shortenRefs/ShortenRefsTestGenerated.java

@@ -42,6 +42,12 @@ public class ShortenRefsTestGenerated extends AbstractShortenRefsTest {
         doTest(fileName);
     }
 
+    @TestMetadata("callableRefsOnCompanion.kt")
+    public void testCallableRefsOnCompanion() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/shortenRefs/callableRefsOnCompanion.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("ClassNameConflict.kt")
     public void testClassNameConflict() throws Exception {
         String fileName = KotlinTestUtils.navigationMetadata("idea/testData/shortenRefs/ClassNameConflict.kt");