es existiert noch ein merkwürdiger fehler in der foreach loop

src/animation/PseudoCodeNode.java

@@ -141,6 +141,13 @@ public class PseudoCodeNode extends DefaultMutableTreeNode {
     	return false;
     }
     
+    private void expandToRoot()
+    {
+    	if( parent != null )
+    		((PseudoCodeNode)parent).expandToRoot();
+        tree.expandPath( new TreePath( this.getPath() ) );
+    }
+    
     /**
      * highlight this line of pseudocode.
      * should be called when the line is entered, as it triggers breakpoints
@@ -155,7 +162,7 @@ public class PseudoCodeNode extends DefaultMutableTreeNode {
         if( selected )
         {
             if( controller == null || controller.getStepOption() != 1 || breakPoint )
-                tree.expandPath( new TreePath( this.getPath() ) );
+            	expandToRoot();
         }
         else
         {
@@ -231,18 +238,21 @@ public class PseudoCodeNode extends DefaultMutableTreeNode {
         {
 			if( !m.isDefined( "line_" + nodeId + "_call", false ) )
 			{
-	            ControlFlow cf = code.runForward( m );
+				StackFrame tmp = null;
+				if( function )
+				{
+					tmp = m.removeFrame();
+					m.addFrame( tmp ); // a little abuse of the stack to get direct access of the current frame before it could be destroyed by the user defined function
+				}ControlFlow cf = code.runForward( m );
 	            switch( cf.getStatus() )
 	            {
 	            case ControlFlow.STEP_INTO:
 	            	function = true;
-	            	StackFrame tmp = m.removeFrame();
 	            	if( children != null )
 	            	{
 	            		for( Object c : children )
 	            			((PseudoCodeNode)c).writeToStack( m );
 	            	}
-	            	m.addFrame( tmp );
 	                switch( stepInto( m ) )
 	                {
 					case BREAKPOINT:
@@ -264,11 +274,13 @@ public class PseudoCodeNode extends DefaultMutableTreeNode {
 	            case ControlFlow.STEP_OVER:
 	            	if( function )
 	            	{
+	            		m.addFrame( tmp ); // add old stack frame
 	                	if( children != null )
 	                	{
 	                		for( Object c : children )
-	                			((PseudoCodeNode)c).loadFromStack( m );
+	                			((PseudoCodeNode)c).loadFromStack( m ); // load stored variables
 	                	}
+	                	m.removeFrame(); // remove the stack frame
 	            	}
 	                return CodeStatus.FINISHED;
 	            case ControlFlow.CALL: