From 392da838ca26adcf0a4f09e11f72a85fdf0a2fd7 Mon Sep 17 00:00:00 2001
From: Erokhin Stanislav <Stanislav.Erokhin@jetbrains.com>
Date: Fri, 20 Dec 2013 22:41:36 +0400
Subject: [PATCH] JS backend: Add support for safe call

---
 .../translate/reference/ClearCallTranslator.kt    | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/js/js.translator/src/org/jetbrains/k2js/translate/reference/ClearCallTranslator.kt b/js/js.translator/src/org/jetbrains/k2js/translate/reference/ClearCallTranslator.kt
index 91526ec8e55..b7d2feb7f61 100644
--- a/js/js.translator/src/org/jetbrains/k2js/translate/reference/ClearCallTranslator.kt
+++ b/js/js.translator/src/org/jetbrains/k2js/translate/reference/ClearCallTranslator.kt
@@ -95,8 +95,16 @@ trait CallCase<I : BaseCallInfo> {
         throw unsupported()
     }
 
+    fun constructSafeCall(result: JsExpression): JsExpression {
+        return CallType.SAFE.constructCall(callInfo.nullableReceiverForSafeCall, object : CallType.CallConstructor {
+            override fun construct(receiver: JsExpression?): JsExpression {
+                return result
+            }
+        }, callInfo.context)
+    }
+
     final fun translate(): JsExpression {
-        return if (callInfo.thisObject == null) {
+        val result = if (callInfo.thisObject == null) {
             if (callInfo.receiverObject == null)
                 callInfo.noReceivers()
             else
@@ -107,6 +115,11 @@ trait CallCase<I : BaseCallInfo> {
             else
                 callInfo.bothReceivers()
         }
+
+        return if (callInfo.isSafeCall())
+            constructSafeCall(result)
+        else
+            return result
     }
 }