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nsResourceSet.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
00030  * under the terms of either the GPL or the LGPL, and not to allow others to
00031  * use your version of this file under the terms of the MPL, indicate your
00032  * decision by deleting the provisions above and replace them with the notice
00033  * and other provisions required by the GPL or the LGPL. If you do not delete
00034  * the provisions above, a recipient may use your version of this file under
00035  * the terms of any one of the MPL, the GPL or the LGPL.
00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 #ifndef nsResourceSet_h__
00039 #define nsResourceSet_h__
00040 
00041 #include "nsIRDFResource.h"
00042 
00043 class nsResourceSet
00044 {
00045 public:
00046     nsResourceSet()
00047         : mResources(nsnull),
00048           mCount(0),
00049           mCapacity(0) {
00050         MOZ_COUNT_CTOR(nsResourceSet); }
00051 
00052     nsResourceSet(const nsResourceSet& aResourceSet);
00053 
00054     nsResourceSet& operator=(const nsResourceSet& aResourceSet);
00055     
00056     ~nsResourceSet();
00057 
00058     nsresult Clear();
00059     nsresult Add(nsIRDFResource* aProperty);
00060     void Remove(nsIRDFResource* aProperty);
00061 
00062     PRBool Contains(nsIRDFResource* aProperty) const;
00063 
00064 protected:
00065     nsIRDFResource** mResources;
00066     PRInt32 mCount;
00067     PRInt32 mCapacity;
00068 
00069 public:
00070     class ConstIterator {
00071     protected:
00072         nsIRDFResource** mCurrent;
00073 
00074     public:
00075         ConstIterator() : mCurrent(nsnull) {}
00076 
00077         ConstIterator(const ConstIterator& aConstIterator)
00078             : mCurrent(aConstIterator.mCurrent) {}
00079 
00080         ConstIterator& operator=(const ConstIterator& aConstIterator) {
00081             mCurrent = aConstIterator.mCurrent;
00082             return *this; }
00083 
00084         ConstIterator& operator++() {
00085             ++mCurrent;
00086             return *this; }
00087 
00088         ConstIterator operator++(int) {
00089             ConstIterator result(*this);
00090             ++mCurrent;
00091             return result; }
00092 
00093         /*const*/ nsIRDFResource* operator*() const {
00094             return *mCurrent; }
00095 
00096         /*const*/ nsIRDFResource* operator->() const {
00097             return *mCurrent; }
00098 
00099         PRBool operator==(const ConstIterator& aConstIterator) const {
00100             return mCurrent == aConstIterator.mCurrent; }
00101 
00102         PRBool operator!=(const ConstIterator& aConstIterator) const {
00103             return mCurrent != aConstIterator.mCurrent; }
00104 
00105     protected:
00106         ConstIterator(nsIRDFResource** aProperty) : mCurrent(aProperty) {}
00107         friend class nsResourceSet;
00108     };
00109 
00110     ConstIterator First() const { return ConstIterator(mResources); }
00111     ConstIterator Last() const { return ConstIterator(mResources + mCount); }
00112 };
00113 
00114 #endif // nsResourceSet_h__
00115