From 036090be917f386cce33bb1c73bcc7fd7d75dffc Mon Sep 17 00:00:00 2001
From: Dmitry Petrov <dmitry.petrov@jetbrains.com>
Date: Thu, 20 Apr 2017 14:07:50 +0300
Subject: [PATCH] Support intersection type in TypeUtils.contains(...)

---
 .../src/org/jetbrains/kotlin/types/TypeUtils.java      | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/core/descriptors/src/org/jetbrains/kotlin/types/TypeUtils.java b/core/descriptors/src/org/jetbrains/kotlin/types/TypeUtils.java
index f8527ac1daf..01c743bfe95 100644
--- a/core/descriptors/src/org/jetbrains/kotlin/types/TypeUtils.java
+++ b/core/descriptors/src/org/jetbrains/kotlin/types/TypeUtils.java
@@ -394,6 +394,16 @@ public class TypeUtils {
             && (contains(flexibleType.getLowerBound(), isSpecialType) || contains(flexibleType.getUpperBound(), isSpecialType))) {
             return true;
         }
+
+        TypeConstructor typeConstructor = type.getConstructor();
+        if (typeConstructor instanceof IntersectionTypeConstructor) {
+            IntersectionTypeConstructor intersectionTypeConstructor = (IntersectionTypeConstructor) typeConstructor;
+            for (KotlinType supertype : intersectionTypeConstructor.getSupertypes()) {
+                if (contains(supertype, isSpecialType)) return true;
+            }
+            return false;
+        }
+
         for (TypeProjection projection : type.getArguments()) {
             if (!projection.isStarProjection() && contains(projection.getType(), isSpecialType)) return true;
         }