[LC] Fix for light classes equivalence

compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/KtLightClassForFacade.kt

@@ -190,9 +190,9 @@ open class KtLightClassForFacade constructor(
 
     override fun getNavigationElement() = firstFileInFacade
 
-    override fun isEquivalentTo(another: PsiElement?): Boolean {
-        return another is KtLightClassForFacade && Comparing.equal(another.qualifiedName, qualifiedName)
-    }
+    override fun isEquivalentTo(another: PsiElement?): Boolean =
+        equals(another) ||
+                (another is KtLightClassForFacade && another.facadeClassFqName == facadeClassFqName)
 
     override fun getElementIcon(flags: Int): Icon? = throw UnsupportedOperationException("This should be done by JetIconProvider")
 

compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/KtLightClassForScript.kt

@@ -123,9 +123,11 @@ open class KtLightClassForScript(val script: KtScript) : KtLazyLightClass(script
     override fun getNavigationElement() = script
 
     override fun isEquivalentTo(another: PsiElement?): Boolean =
-        another is PsiClass && Comparing.equal(another.qualifiedName, qualifiedName)
+        equals(another) ||
+                (another is KtLightClassForScript && fqName == another.fqName)
 
-    override fun getElementIcon(flags: Int): Icon? = throw UnsupportedOperationException("This should be done by JetIconProvider")
+    override fun getElementIcon(flags: Int): Icon? =
+        throw UnsupportedOperationException("This should be done by JetIconProvider")
 
     override val originKind: LightClassOriginKind get() = LightClassOriginKind.SOURCE
 
@@ -174,7 +176,7 @@ open class KtLightClassForScript(val script: KtScript) : KtLazyLightClass(script
             return false
         }
 
-        val lightClass = other as KtLightClassForScript
+        val lightClass = other as? KtLightClassForScript ?: return false
         if (this === other) return true
 
         if (this.hashCode != lightClass.hashCode) return false

compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/KtLightClassForSourceDeclaration.kt

@@ -152,14 +152,13 @@ abstract class KtLightClassForSourceDeclaration(
 
     override fun getNavigationElement(): PsiElement = classOrObject
 
-    override fun isEquivalentTo(another: PsiElement?): Boolean {
-        return kotlinOrigin.isEquivalentTo(another) ||
-                another is KtLightClassForSourceDeclaration && Comparing.equal(another.qualifiedName, qualifiedName)
-    }
+    override fun isEquivalentTo(another: PsiElement?): Boolean =
+        kotlinOrigin.isEquivalentTo(another) ||
+                equals(another) ||
+                (qualifiedName != null && another is KtLightClassForSourceDeclaration && qualifiedName == another.qualifiedName)
 
-    override fun getElementIcon(flags: Int): Icon? {
+    override fun getElementIcon(flags: Int): Icon? =
         throw UnsupportedOperationException("This should be done by JetIconProvider")
-    }
 
     override fun equals(other: Any?): Boolean {
         if (this === other) return true