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74 lines
2.6 KiB
C
74 lines
2.6 KiB
C
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is XPCOM Array implementation.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corp.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Alec Flett <alecf@netscape.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsArrayUtils_h__
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#define nsArrayUtils_h__
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#include "nsCOMPtr.h"
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#include "nsIArray.h"
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// helper class for do_QueryElementAt
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class NS_COM_GLUE nsQueryArrayElementAt : public nsCOMPtr_helper
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{
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public:
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nsQueryArrayElementAt(nsIArray* aArray, PRUint32 aIndex,
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nsresult* aErrorPtr)
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: mArray(aArray),
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mIndex(aIndex),
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mErrorPtr(aErrorPtr)
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{
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// nothing else to do here
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}
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virtual nsresult NS_FASTCALL operator()(const nsIID& aIID, void**) const;
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private:
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nsIArray* mArray;
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PRUint32 mIndex;
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nsresult* mErrorPtr;
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};
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inline
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const nsQueryArrayElementAt
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do_QueryElementAt(nsIArray* aArray, PRUint32 aIndex, nsresult* aErrorPtr = 0)
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{
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return nsQueryArrayElementAt(aArray, aIndex, aErrorPtr);
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}
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#endif // nsArrayUtils_h__
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