From ff6a28b64c1a5a9127a19d28afee320e1c6d2b64 Mon Sep 17 00:00:00 2001
From: Stanislav Erokhin <Stanislav.Erokhin@jetbrains.com>
Date: Thu, 18 May 2017 14:25:49 +0300
Subject: [PATCH] Add util method to BuildIns is `kotlin.Function` type.

---
 .../src/org/jetbrains/kotlin/builtins/KotlinBuiltIns.java   | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/core/descriptors/src/org/jetbrains/kotlin/builtins/KotlinBuiltIns.java b/core/descriptors/src/org/jetbrains/kotlin/builtins/KotlinBuiltIns.java
index e3b468dc903..23266871a5a 100644
--- a/core/descriptors/src/org/jetbrains/kotlin/builtins/KotlinBuiltIns.java
+++ b/core/descriptors/src/org/jetbrains/kotlin/builtins/KotlinBuiltIns.java
@@ -275,6 +275,8 @@ public abstract class KotlinBuiltIns {
 
         public final FqNameUnsafe _enum = fqNameUnsafe("Enum");
 
+        public final FqNameUnsafe functionSupertype = fqNameUnsafe("Function");
+
 
 
         public final FqName throwable = fqName("Throwable");
@@ -1094,6 +1096,10 @@ public abstract class KotlinBuiltIns {
         return false;
     }
 
+    public static boolean isNotNullOrNullableFunctionSupertype(@NotNull KotlinType type) {
+        return isConstructedFromGivenClass(type, FQ_NAMES.functionSupertype);
+    }
+
     public static FqName getPrimitiveFqName(@NotNull PrimitiveType primitiveType) {
         return BUILT_INS_PACKAGE_FQ_NAME.child(primitiveType.getTypeName());
     }