New functionality

git-svn-id: svn://10.0.0.236/trunk@32130 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/js/js2/java/TryNode.java

@@ -0,0 +1,49 @@
+
+import java.util.Vector;
+
+class TryNode extends ControlNode {
+    
+    TryNode(ControlNode tryCode)
+    {
+        super(null);
+        tryBody = tryCode;
+    }
+    
+    void addFinally(ControlNode finallyCode)
+    {
+        finallyBody = finallyCode;
+    }
+    
+    void addCatchClause(ExpressionNode e, ControlNode c)
+    {
+        catchExpr.addElement(e);
+        catchCode.addElement(c);
+    }
+
+    ControlNode eval(Environment theEnv)
+    {
+        int stackHeight = theEnv.theStack.size();
+        try {
+            ControlNode c = tryBody;
+            while (c != null) c = c.eval(theEnv);
+        }
+        catch (JSException x) {
+            int count = catchExpr.size();
+            for (int i = 0; i < count; i++) {
+                ExpressionNode e = (ExpressionNode)(catchExpr.elementAt(i));
+                String id = ((JSValue)e).value;
+                theEnv.theStack.setStack(stackHeight);
+                theEnv.theGlobals.put(id, new Double(x.getValue().d));
+                return (ControlNode)(catchCode.elementAt(i));
+            }
+        }
+        return next;
+    }
+    
+    Vector catchExpr = new Vector();
+    Vector catchCode = new Vector();
+        
+    ControlNode tryBody;
+    ControlNode finallyBody;    
+
+}