From 9b3115a10b33be2caccf2bf70c1905a5491184d3 Mon Sep 17 00:00:00 2001
From: Alexander Udalov <Alexander.Udalov@jetbrains.com>
Date: Mon, 24 Jun 2013 23:09:33 +0400
Subject: [PATCH] Fix EA-47308

Don't always cast PsiFile to JetFile, first check if it really is a Kotlin
source
---
 .../org/jetbrains/jet/plugin/quickfix/CastExpressionFix.java   | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/idea/src/org/jetbrains/jet/plugin/quickfix/CastExpressionFix.java b/idea/src/org/jetbrains/jet/plugin/quickfix/CastExpressionFix.java
index d58f92e6ebd..eeb30199411 100644
--- a/idea/src/org/jetbrains/jet/plugin/quickfix/CastExpressionFix.java
+++ b/idea/src/org/jetbrains/jet/plugin/quickfix/CastExpressionFix.java
@@ -58,9 +58,10 @@ public class CastExpressionFix extends JetIntentionAction<JetExpression> {
 
     @Override
     public boolean isAvailable(@NotNull Project project, Editor editor, PsiFile file) {
+        if (!super.isAvailable(project, editor, file)) return false;
         BindingContext context = AnalyzerFacadeWithCache.analyzeFileWithCache((JetFile) file).getBindingContext();
         JetType expressionType = context.get(BindingContext.EXPRESSION_TYPE, element);
-        return super.isAvailable(project, editor, file) && expressionType != null && JetTypeChecker.INSTANCE.isSubtypeOf(type, expressionType);
+        return expressionType != null && JetTypeChecker.INSTANCE.isSubtypeOf(type, expressionType);
     }
 
     @Override