From 8eb0fb31ca1a8e3aff763c2756de159adaf6fe5f Mon Sep 17 00:00:00 2001
From: "Pavel V. Talanov" <Pavel.Talanov@jetbrains.com>
Date: Fri, 20 Jul 2012 12:38:07 +0400
Subject: [PATCH] Int#downto

---
 .../org/jetbrains/k2js/test/semantics/RangeTest.java  |  4 ++++
 .../intrinsic/functions/factories/RangesFIF.java      |  1 +
 js/js.translator/testFiles/kotlin_lib.js              |  6 +++++-
 js/js.translator/testFiles/range/cases/intDownTo.kt   | 11 +++++++++++
 4 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 js/js.translator/testFiles/range/cases/intDownTo.kt

diff --git a/js/js.tests/test/org/jetbrains/k2js/test/semantics/RangeTest.java b/js/js.tests/test/org/jetbrains/k2js/test/semantics/RangeTest.java
index 618ca4dd5a5..3e56d0480aa 100644
--- a/js/js.tests/test/org/jetbrains/k2js/test/semantics/RangeTest.java
+++ b/js/js.tests/test/org/jetbrains/k2js/test/semantics/RangeTest.java
@@ -48,4 +48,8 @@ public final class RangeTest extends SingleFileTranslationTest {
     public void testIntUpTo() throws Exception {
         fooBoxTest();
     }
+
+    public void testIntDownTo() throws Exception {
+        fooBoxTest();
+    }
 }
diff --git a/js/js.translator/src/org/jetbrains/k2js/translate/intrinsic/functions/factories/RangesFIF.java b/js/js.translator/src/org/jetbrains/k2js/translate/intrinsic/functions/factories/RangesFIF.java
index ef436de6393..d6e787d72e7 100644
--- a/js/js.translator/src/org/jetbrains/k2js/translate/intrinsic/functions/factories/RangesFIF.java
+++ b/js/js.translator/src/org/jetbrains/k2js/translate/intrinsic/functions/factories/RangesFIF.java
@@ -31,5 +31,6 @@ public final class RangesFIF extends CompositeFIF {
 
     private RangesFIF() {
         add(pattern("Int.upto"), new CallStandardMethodIntrinsic("Kotlin.intUpto", true, 1));
+        add(pattern("Int.downto"), new CallStandardMethodIntrinsic("Kotlin.intDownto", true, 1));
     }
 }
diff --git a/js/js.translator/testFiles/kotlin_lib.js b/js/js.translator/testFiles/kotlin_lib.js
index 06fa523c236..edcc2b741a0 100644
--- a/js/js.translator/testFiles/kotlin_lib.js
+++ b/js/js.translator/testFiles/kotlin_lib.js
@@ -43,7 +43,11 @@ var kotlin = {set:function (receiver, key, value) {
     };
 
     Kotlin.intUpto = function (from, limit) {
-        return Kotlin.$new(Kotlin.NumberRange)(from, limit - from + 1);
+        return Kotlin.$new(Kotlin.NumberRange)(from, limit - from + 1, false);
+    };
+
+    Kotlin.intDownto = function (from, limit) {
+        return Kotlin.$new(Kotlin.NumberRange)(from, from - limit + 1, true);
     };
 
     Kotlin.modules = {};
diff --git a/js/js.translator/testFiles/range/cases/intDownTo.kt b/js/js.translator/testFiles/range/cases/intDownTo.kt
new file mode 100644
index 00000000000..a99704dc664
--- /dev/null
+++ b/js/js.translator/testFiles/range/cases/intDownTo.kt
@@ -0,0 +1,11 @@
+package foo
+
+import java.util.ArrayList
+
+fun box() : Boolean {
+    var elems = ArrayList<Int>()
+    for (i in 4 downto 0) {
+      elems.add(i)
+    }
+    return elems[0] == 4 && elems[1] == 3 && elems[2] == 2 && elems[3] == 1 &&  elems[4] == 0
+}
\ No newline at end of file