--- a/dwtx/jface/text/contentassist/CompletionProposalPopup.d	Sun Aug 24 02:22:48 2008 +0200
+++ b/dwtx/jface/text/contentassist/CompletionProposalPopup.d	Sun Aug 24 02:26:23 2008 +0200
@@ -938,7 +938,7 @@
 
             IDocument document= fContentAssistSubjectControlAdapter.getDocument();
 
-            if (fViewer instanceof ITextViewerExtension) {
+            if ( cast(ITextViewerExtension)fViewer ) {
                 ITextViewerExtension extension= cast(ITextViewerExtension) fViewer;
                 target= extension.getRewriteTarget();
             }
@@ -946,7 +946,7 @@
             if (target !is null)
                 target.beginCompoundChange();
 
-            if (fViewer instanceof IEditingSupportRegistry) {
+            if ( cast(IEditingSupportRegistry)fViewer ) {
                 IEditingSupportRegistry registry= cast(IEditingSupportRegistry) fViewer;
                 registry.register(helper);
             }
@@ -955,7 +955,7 @@
             if (p instanceof ICompletionProposalExtension2 && fViewer !is null) {
                 ICompletionProposalExtension2 e= cast(ICompletionProposalExtension2) p;
                 e.apply(fViewer, trigger, stateMask, offset);
-            } else if (p instanceof ICompletionProposalExtension) {
+            } else if ( cast(ICompletionProposalExtension)p ) {
                 ICompletionProposalExtension e= cast(ICompletionProposalExtension) p;
                 e.apply(document, trigger, offset);
             } else {
@@ -972,7 +972,7 @@
             if (info !is null) {
 
                 int contextInformationOffset;
-                if (p instanceof ICompletionProposalExtension) {
+                if ( cast(ICompletionProposalExtension)p ) {
                     ICompletionProposalExtension e= cast(ICompletionProposalExtension) p;
                     contextInformationOffset= e.getContextInformationPosition();
                 } else {
@@ -990,7 +990,7 @@
             if (target !is null)
                 target.endCompoundChange();
 
-            if (fViewer instanceof IEditingSupportRegistry) {
+            if ( cast(IEditingSupportRegistry)fViewer ) {
                 IEditingSupportRegistry registry= cast(IEditingSupportRegistry) fViewer;
                 registry.unregister(helper);
             }
@@ -1036,7 +1036,7 @@
 
         unregister();
 
-        if (fViewer instanceof IEditingSupportRegistry) {
+        if ( cast(IEditingSupportRegistry)fViewer ) {
             IEditingSupportRegistry registry= cast(IEditingSupportRegistry) fViewer;
             registry.unregister(fFocusHelper);
         }
@@ -1207,7 +1207,7 @@
 
                 };
             }
-            if (fViewer instanceof IEditingSupportRegistry) {
+            if ( cast(IEditingSupportRegistry)fViewer ) {
                 IEditingSupportRegistry registry= cast(IEditingSupportRegistry) fViewer;
                 registry.register(fFocusHelper);
             }
@@ -1342,7 +1342,7 @@
 
             default:
                 ICompletionProposal p= getSelectedProposal();
-                if (p instanceof ICompletionProposalExtension) {
+                if ( cast(ICompletionProposalExtension)p ) {
                     ICompletionProposalExtension t= cast(ICompletionProposalExtension) p;
                     char[] triggers= t.getTriggerCharacters();
                     if (contains(triggers, key)) {
@@ -1530,7 +1530,7 @@
      */
     private bool canAutoInsert(ICompletionProposal proposal) {
         if (fContentAssistant.isAutoInserting()) {
-            if (proposal instanceof ICompletionProposalExtension4) {
+            if ( cast(ICompletionProposalExtension4)proposal ) {
                 ICompletionProposalExtension4 ext= cast(ICompletionProposalExtension4) proposal;
                 return ext.isAutoInsertable();
             }
@@ -1637,7 +1637,7 @@
         for (int i= 0; i < fFilteredProposals.length; i++) {
             ICompletionProposal proposal= fFilteredProposals[i];
             
-            if (!(proposal instanceof ICompletionProposalExtension3))
+            if (!( cast(ICompletionProposalExtension3)proposal ))
                 return false;
             
             int start= (cast(ICompletionProposalExtension3)proposal).getPrefixCompletionStart(fContentAssistSubjectControlAdapter.getDocument(), fFilterOffset);