1 files changed, 29 insertions, 0 deletions
diff --git a/framework/Web/Javascripts/prototype/range.js b/framework/Web/Javascripts/prototype/range.js
new file mode 100644
index 00000000..f7c87166
--- /dev/null
+++ b/framework/Web/Javascripts/prototype/range.js
@@ -0,0 +1,29 @@
+var Range = Class.create();
+Object.extend(Range.prototype, Enumerable);
+Object.extend(Range.prototype, {
+  initialize: function(start, end, exclusive) {
+    this.start = start;
+    this.end = end;
+    this.exclusive = exclusive;
+  },
+  
+  _each: function(iterator) {
+    var value = this.start;
+    do {
+      iterator(value);
+      value = value.succ();
+    } while (this.include(value));
+  },
+  
+  include: function(value) {
+    if (value < this.start) 
+      return false;
+    if (this.exclusive)
+      return value < this.end;
+    return value <= this.end;
+  }
+});
+
+var $R = function(start, end, exclusive) {
+  return new Range(start, end, exclusive);
+}
+\ No newline at end of file