1 files changed, 53 insertions, 0 deletions
diff --git a/src/cldc-library/scala/runtime/Comparator.java b/src/cldc-library/scala/runtime/Comparator.java
new file mode 100644
index 0000000000..75469e69b1
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+++ b/src/cldc-library/scala/runtime/Comparator.java
@@ -0,0 +1,53 @@
+/*                     __                                               *\
+**     ________ ___   / /  ___     Scala API                            **
+**    / __/ __// _ | / /  / _ |    (c) 2006-2007, LAMP/EPFL             **
+**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
+** /____/\___/_/ |_/____/_/ | |                                         **
+**                          |/                                          **
+\*                                                                      */
+
+// $Id$
+
+
+package scala.runtime;
+
+/**
+ *  @author  Gilles Dubochet
+ *  @author  Martin Odersky
+ *  @version 1.2 */
+public class Comparator {
+
+    /** A rich implementation of the equals method that overrides the default
+     *  equals because Java's boxed primitives are utterly broken. This equals
+     *  is inserted instead of a normal equals by the Scala compiler (in the
+     *  ICode phase, method <code>genEqEqPrimitive</code>) only when either
+     *  side of the comparison is a subclass of <code>AnyVal</code>, of
+     *  <code>java.lang.Number</code>, of <code>java.lang.Character</code> or
+     *  is exactly <code>Any</code> or <code>AnyRef</code>, but when both sides
+     *  have different types. */
+    public static boolean equals(Object a, Object b) {
+        if (a == null)
+            return b == null;
+        if (b == null)
+            return false;
+        if (a.equals(b))
+            return true;
+
+        final long left =
+            (a instanceof Integer) ? ((Integer)a).intValue() :
+            (a instanceof Character) ? ((Character)a).charValue() :
+            (a instanceof Long) ? ((Long)a).longValue() :
+            (a instanceof Byte) ? ((Byte)a).byteValue() :
+            ((Short)a).shortValue();
+
+        final long right =
+            (b instanceof Integer) ? ((Integer)b).intValue() :
+            (b instanceof Character) ? ((Character)b).charValue() :
+            (b instanceof Long) ? ((Long)b).longValue() :
+            (b instanceof Byte) ? ((Byte)b).byteValue() :
+            ((Short)b).shortValue();
+
+        return left == right;
+    }
+
+}