/*******************************************************************************
 * This file is part of the Polyglot extensible compiler framework.
 *
 * Copyright (c) 2000-2012 Polyglot project group, Cornell University
 * Copyright (c) 2006-2012 IBM Corporation
 * All rights reserved.
 *
 * This program and the accompanying materials are made available under
 * the terms of the Eclipse Public License v1.0 which accompanies this
 * distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * This program and the accompanying materials are made available under
 * the terms of the Lesser GNU Public License v2.0 which accompanies this
 * distribution.
 * 
 * The development of the Polyglot project has been supported by a
 * number of funding sources, including DARPA Contract F30602-99-1-0533,
 * monitored by USAF Rome Laboratory, ONR Grants N00014-01-1-0968 and
 * N00014-09-1-0652, NSF Grants CNS-0208642, CNS-0430161, CCF-0133302,
 * and CCF-1054172, AFRL Contract FA8650-10-C-7022, an Alfred P. Sloan 
 * Research Fellowship, and an Intel Research Ph.D. Fellowship.
 *
 * See README for contributors.
 ******************************************************************************/
package polyglot.translate.ext;

import polyglot.ast.Field;
import polyglot.ast.FieldAssign;
import polyglot.ast.Node;
import polyglot.translate.ExtensionRewriter;
import polyglot.types.SemanticException;
import polyglot.util.SerialVersionUID;

public class FieldAssignToExt_c extends ToExt_c {
    private static final long serialVersionUID = SerialVersionUID.generate();

    @Override
    public Node toExt(ExtensionRewriter rw) throws SemanticException {
        FieldAssign n = (FieldAssign) node();
        return rw.to_nf().FieldAssign(n.position(),
                                      (Field) n.left(),
                                      n.operator(),
                                      n.right());
    }
}

@@ -1718,16 +1718,61 @@
 node();%0A
+        if (n.left() instanceof Field) %7B%0A    
         
@@ -1811,24 +1811,28 @@
 position(),%0A
+    
             
@@ -1913,16 +1913,20 @@
         
+    
 n.operat
@@ -1969,16 +1969,20 @@
         
+    
 n.right(
@@ -1985,16 +1985,271 @@
 ght());%0A
+        %7D%0A        // n.left() is some none-field expression%0A        return rw.to_nf().AmbAssign(n.position(),%0A                                    n.left(),%0A                                    n.operator(),%0A                                    n.right());%0A%0A
     %7D%0A%7D%0A

Handle the case where the left hand side of the field assignment does not get translated to a field.