From eba343dd849fbbe014127c57741a5c09df6b6681 Mon Sep 17 00:00:00 2001
From: Alex Tkachman <alex.tkachman@gmail.com>
Date: Fri, 6 Jan 2012 14:32:14 +0200
Subject: [PATCH] negative steps supported

---
 stdlib/src/jet/ByteRange.java  | 5 ++++-
 stdlib/src/jet/CharRange.java  | 5 ++++-
 stdlib/src/jet/IntRange.java   | 5 ++++-
 stdlib/src/jet/LongRange.java  | 5 ++++-
 stdlib/src/jet/ShortRange.java | 5 ++++-
 5 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/stdlib/src/jet/ByteRange.java b/stdlib/src/jet/ByteRange.java
index b61679c79e7..4210b7d9f5f 100644
--- a/stdlib/src/jet/ByteRange.java
+++ b/stdlib/src/jet/ByteRange.java
@@ -37,7 +37,10 @@ public final class ByteRange implements Range<Byte>, ByteIterable, JetObject {
     }
 
     public ByteIterator step(int step) {
-        return new MyIterator(start, count, step);
+        if(step < 0)
+            return new MyIterator(getEnd(), -count, -step);
+        else
+            return new MyIterator(start, count, step);
     }
 
     public ByteRange minus() {
diff --git a/stdlib/src/jet/CharRange.java b/stdlib/src/jet/CharRange.java
index ff94c99239c..53b41a5d542 100644
--- a/stdlib/src/jet/CharRange.java
+++ b/stdlib/src/jet/CharRange.java
@@ -41,7 +41,10 @@ public final class CharRange implements Range<Character>, CharIterable, JetObjec
     }
 
     public CharIterator step(int step) {
-        return new MyIterator(start, count, step);
+        if(step < 0)
+            return new MyIterator(getEnd(), -count, -step);
+        else
+            return new MyIterator(start, count, step);
     }
 
     @Override
diff --git a/stdlib/src/jet/IntRange.java b/stdlib/src/jet/IntRange.java
index 9b722639436..0bc52ada3c5 100644
--- a/stdlib/src/jet/IntRange.java
+++ b/stdlib/src/jet/IntRange.java
@@ -21,7 +21,10 @@ public final class IntRange implements Range<Integer>, IntIterable, JetObject {
     }
 
     public IntIterator step(int step) {
-        return new MyIterator(start, count, step);
+        if(step < 0)
+            return new MyIterator(getEnd(), -count, -step);
+        else
+            return new MyIterator(start, count, step);
     }
 
     public boolean getIsReversed() {
diff --git a/stdlib/src/jet/LongRange.java b/stdlib/src/jet/LongRange.java
index abcb921ca87..6785f9ecded 100644
--- a/stdlib/src/jet/LongRange.java
+++ b/stdlib/src/jet/LongRange.java
@@ -12,7 +12,10 @@ public final class LongRange implements Range<Long>, LongIterable, JetObject {
     }
 
     public LongIterator step(long step) {
-        return new MyIterator(start, count, step);
+        if(step < 0)
+            return new MyIterator(getEnd(), -count, -step);
+        else
+            return new MyIterator(start, count, step);
     }
 
     @Override
diff --git a/stdlib/src/jet/ShortRange.java b/stdlib/src/jet/ShortRange.java
index 79428f90702..a3c95dd7258 100644
--- a/stdlib/src/jet/ShortRange.java
+++ b/stdlib/src/jet/ShortRange.java
@@ -12,7 +12,10 @@ public final class ShortRange implements Range<Short>, ShortIterable, JetObject
     }
 
     public ShortIterator step(int step) {
-        return new MyIterator(start, count, step);
+        if(step < 0)
+            return new MyIterator(getEnd(), -count, -step);
+        else
+            return new MyIterator(start, count, step);
     }
 
     @Override