--- a/dwtx/jface/text/rules/WhitespaceRule.d	Wed Aug 27 14:49:30 2008 +0200
+++ b/dwtx/jface/text/rules/WhitespaceRule.d	Mon Sep 08 00:51:37 2008 +0200
@@ -65,7 +65,7 @@
      * @param detector the rule's whitespace detector, may not be <code>null</code>
      */
     public this(IWhitespaceDetector detector) {
-        Assert.isNotNull(detector);
+        Assert.isNotNull(cast(Object)detector);
         fDetector= detector;
     }
 
@@ -74,10 +74,10 @@
      */
     public IToken evaluate(ICharacterScanner scanner) {
         int c= scanner.read();
-        if (fDetector.isWhitespace(cast(wchar) c)) {
+        if (fDetector.isWhitespace(cast(char) c)) {
             do {
                 c= scanner.read();
-            } while (fDetector.isWhitespace(cast(wchar) c));
+            } while (fDetector.isWhitespace(cast(char) c));
             scanner.unread();
             return Token.WHITESPACE;
         }