added hooks so that BigInt, BigDecimal can do t...

added hooks so that BigInt, BigDecimal can do the right thign for
equality.

5 files changed, 50 insertions, 16 deletions

diff --git a/src/library/scala/math/BigDecimal.scala b/src/library/scala/math/BigDecimal.scala
index 677dfa7e17..c379b83abf 100644
--- a/src/library/scala/math/BigDecimal.scala
+++ b/src/library/scala/math/BigDecimal.scala
@@ -14,19 +14,6 @@ import java.{ lang => jl }
 import java.math.{ MathContext, BigDecimal => BigDec }
 import scala.collection.immutable.NumericRange
 
-/** Conversions which present a consistent conversion interface
- *  across all the numeric types.
- */
-trait ScalaNumericConversions extends jl.Number {
-  def toChar = intValue.toChar
-  def toByte = byteValue
-  def toShort = shortValue
-  def toInt = intValue
-  def toLong = longValue
-  def toFloat = floatValue
-  def toDouble = doubleValue
-}
-
 /**
  *  @author  Stephane Micheloud
  *  @version 1.0
@@ -164,7 +151,7 @@ object BigDecimal
 class BigDecimal(
   val bigDecimal: BigDec,
   val mc: MathContext)
-extends jl.Number with ScalaNumericConversions
+extends ScalaNumber with ScalaNumericConversions
 {
   def this(bigDecimal: BigDec) = this(bigDecimal, BigDecimal.defaultMathContext)
   import BigDecimal.RoundingMode._
diff --git a/src/library/scala/math/BigInt.scala b/src/library/scala/math/BigInt.scala
index 5415a29489..f1e89f4f53 100644
--- a/src/library/scala/math/BigInt.scala
+++ b/src/library/scala/math/BigInt.scala
@@ -12,7 +12,6 @@
 package scala.math
 
 import java.math.BigInteger
-import java.{ lang => jl }
 
 /**
  *  @author  Martin Odersky
@@ -110,7 +109,7 @@ object BigInt {
  *  @version 1.0, 15/07/2003
  */
 @serializable
-class BigInt(val bigInteger: BigInteger) extends jl.Number with ScalaNumericConversions
+class BigInt(val bigInteger: BigInteger) extends ScalaNumber with ScalaNumericConversions
 {
   /** Returns the hash code for this BigInt. */
   override def hashCode(): Int = this.bigInteger.hashCode()
diff --git a/src/library/scala/math/ScalaNumber.java b/src/library/scala/math/ScalaNumber.java
new file mode 100644
index 0000000000..bb54a5d9c0
--- /dev/null
+++ b/src/library/scala/math/ScalaNumber.java
@@ -0,0 +1,20 @@
+/*                     __                                               *\
+**     ________ ___   / /  ___     Scala API                            **
+**    / __/ __// _ | / /  / _ |    (c) 2006-2009, LAMP/EPFL             **
+**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
+** /____/\___/_/ |_/____/_/ | |                                         **
+**                          |/                                          **
+\*                                                                      */
+
+// $Id: ScalaNumber.java 19428 2009-11-06 23:59:26Z extempore $
+
+
+package scala.math;
+
+/** A marker class for Number types introduced by Scala
+ *  @author  Martin Odersky, Paul Phillips
+ *  @version 2.8
+ *  @since 2.8
+ */
+public abstract class ScalaNumber extends java.lang.Number {
+}
diff --git a/src/library/scala/math/ScalaNumericConversions.scala b/src/library/scala/math/ScalaNumericConversions.scala
new file mode 100644
index 0000000000..53465c7438
--- /dev/null
+++ b/src/library/scala/math/ScalaNumericConversions.scala
@@ -0,0 +1,22 @@
+/*                     __                                               *\
+**     ________ ___   / /  ___     Scala API                            **
+**    / __/ __// _ | / /  / _ |    (c) 2007-2009, LAMP/EPFL             **
+**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
+** /____/\___/_/ |_/____/_/ | |                                         **
+**                          |/                                          **
+\*                                                                      */
+
+package scala.math
+
+/** Conversions which present a consistent conversion interface
+ *  across all the numeric types.
+ */
+trait ScalaNumericConversions extends java.lang.Number {
+  def toChar = intValue.toChar
+  def toByte = byteValue
+  def toShort = shortValue
+  def toInt = intValue
+  def toLong = longValue
+  def toFloat = floatValue
+  def toDouble = doubleValue
+}
diff --git a/src/library/scala/runtime/BoxesRunTime.java b/src/library/scala/runtime/BoxesRunTime.java
index b4252ed647..39ea9abcdd 100644
--- a/src/library/scala/runtime/BoxesRunTime.java
+++ b/src/library/scala/runtime/BoxesRunTime.java
@@ -12,6 +12,7 @@
 package scala.runtime;
 
 import java.io.*;
+import scala.math.ScalaNumber;
 
 /** An object (static class) that defines methods used for creating,
   * reverting, and calculating with, boxed values. There are four classes
@@ -145,6 +146,9 @@ public class BoxesRunTime
             Number xn = (Number)x;
             if (y instanceof Number) {
                 Number yn = (Number)y;
+                if ((y instanceof ScalaNumber) && !(x instanceof ScalaNumber)) {
+                    return y.equals(x);
+                }
                 if ((xn instanceof Double) || (yn instanceof Double))
                     return xn.doubleValue() == yn.doubleValue();
                 if ((xn instanceof Float) || (yn instanceof Float))
@@ -175,6 +179,8 @@ public class BoxesRunTime
             return x.floatValue() == ch;
         if (x instanceof Long)
             return x.longValue() == ch;
+        if (x instanceof ScalaNumber)
+            return x.equals(y);
         return x.intValue() == ch;
     }