public void caseInstanceFieldRef(InstanceFieldRef arg0) {
   Value base = arg0.getBase();
   if (base instanceof Local == false)
     throw new UnsupportedOperationException("How do I handle base is not a local?");
   Local local = (Local) base;
   Type type = local.getType();
   if (type instanceof RefType == false)
     throw new UnsupportedOperationException("How do I handle type is not a ref type?");
   RefType ref = (RefType) type;
   OpenCLField ocl_field = new OpenCLField(arg0.getField(), ref.getSootClass());
   if (isLhs()) {
     m_output.append(ocl_field.getInstanceSetterInvoke(arg0.getBase()));
   } else {
     m_output.append(ocl_field.getInstanceGetterInvoke(arg0.getBase()));
   }
   setCheckException();
 }
 public void caseLocal(Local arg0) {
   m_output.append(" " + arg0.getName() + " ");
   m_previousLocal = arg0.getName();
 }