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nsForwardReference.h
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is Mozilla Communicator client code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Chris Waterson <waterson@netscape.com>
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either of the GNU General Public License Version 2 or later (the "GPL"),
00027  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
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00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #ifndef nsForwardReference_h__
00040 #define nsForwardReference_h__
00041 
00042 class nsForwardReference
00043 {
00044 protected:
00045     nsForwardReference() {}
00046 
00047 public:
00048     virtual ~nsForwardReference() {}
00049 
00053     enum Phase {
00055         eStart,
00056 
00059         eConstruction,
00060 
00063         eHookup,
00064 
00066         eDone
00067     };
00068 
00075     static const Phase kPasses[];
00076 
00084     virtual Phase GetPhase() = 0;
00085 
00089     enum Result {
00091         eResolve_Succeeded,
00092 
00094         eResolve_Later,
00095 
00097         eResolve_Error
00098     };
00099 
00106     virtual Result Resolve() = 0;
00107 };
00108 
00109 #endif // nsForwardReference_h__