equals method

4 files changed, 21 insertions, 0 deletions

diff --git a/sources/scala/xml/Comment.scala b/sources/scala/xml/Comment.scala
index 226a881da8..e89674396a 100644
--- a/sources/scala/xml/Comment.scala
+++ b/sources/scala/xml/Comment.scala
@@ -22,6 +22,11 @@ case class Comment( text:String ) extends Node {
   if( text.indexOf("--" ) != -1 )
     throw new IllegalArgumentException("text containts \"--\"");
 
+  final override def equals(x:Any) = x match {
+    case Comment( s ) => text.equals( s );
+    case _ => false;
+  }
+
   /** the constant "#REM" */
   def label    = "#REM";
 
diff --git a/sources/scala/xml/EntityRef.scala b/sources/scala/xml/EntityRef.scala
index 0b4edef76e..117519e266 100644
--- a/sources/scala/xml/EntityRef.scala
+++ b/sources/scala/xml/EntityRef.scala
@@ -21,6 +21,11 @@ case class EntityRef( entityName:String ) extends Node {
   */
   def label    = "#ENTITY";
 
+  final override def equals(x:Any) = x match {
+    case EntityRef( s ) => entityName.equals( s );
+    case _ => false;
+  }
+
   /** always empty */
   final def attribute = immutable.TreeMap.Empty[String,String];
 
diff --git a/sources/scala/xml/ProcInstr.scala b/sources/scala/xml/ProcInstr.scala
index 10c690ccb6..d49125f702 100644
--- a/sources/scala/xml/ProcInstr.scala
+++ b/sources/scala/xml/ProcInstr.scala
@@ -31,6 +31,11 @@ case class ProcInstr( target:String, text:Option[String] ) extends Node {
     case _ =>
   }
 
+  final override def equals(x:Any) = x match {
+    case x @ ProcInstr( t2, s2 ) => target.equals( t2 ) && text.equals( s2 );
+    case _ => false;
+  }
+
   /** the constant "#PI" */
   final def label    = "#PI";
 
diff --git a/sources/scala/xml/Text.scala b/sources/scala/xml/Text.scala
index d937b6d0db..a8dcdebe53 100644
--- a/sources/scala/xml/Text.scala
+++ b/sources/scala/xml/Text.scala
@@ -22,6 +22,12 @@ case class Text( text:String ) extends Node {
   */
   def label    = "#PCDATA";
 
+  final override def equals(x:Any) = x match {
+    case s:String => text.equals( s );
+    case Text( s ) => text.equals( s );
+    case _ => false;
+  }
+
   /** always empty */
   final def attribute = immutable.TreeMap.Empty[String,String];