1 /*
   2  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "ci/ciNullObject.hpp"
  27 #include "ci/ciUtilities.hpp"
  28 
  29 // ciNullObject
  30 //
  31 // This class represents a null reference.  It can be used
  32 // as a class loader or as the null constant.
  33 
  34 // ------------------------------------------------------------------
  35 // ciNullObject::print_impl
  36 //
  37 // Implementation of the print method.
  38 void ciNullObject::print_impl(outputStream* st) {
  39   ciObject::print_impl(st);
  40   st->print(" unique");
  41 }
  42 
  43 // ------------------------------------------------------------------
  44 // ciNullObject::make
  45 //
  46 // Get the distinguished instance of this class.
  47 ciNullObject* ciNullObject::make() {
  48   return CURRENT_ENV->_null_object_instance->as_null_object();
  49 }