1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/xpcom/glue/nsArrayUtils.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,40 @@
1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef nsArrayUtils_h__
1.10 +#define nsArrayUtils_h__
1.11 +
1.12 +#include "nsCOMPtr.h"
1.13 +#include "nsIArray.h"
1.14 +
1.15 +// helper class for do_QueryElementAt
1.16 +class NS_COM_GLUE nsQueryArrayElementAt : public nsCOMPtr_helper
1.17 + {
1.18 + public:
1.19 + nsQueryArrayElementAt(nsIArray* aArray, uint32_t aIndex,
1.20 + nsresult* aErrorPtr)
1.21 + : mArray(aArray),
1.22 + mIndex(aIndex),
1.23 + mErrorPtr(aErrorPtr)
1.24 + {
1.25 + // nothing else to do here
1.26 + }
1.27 +
1.28 + virtual nsresult NS_FASTCALL operator()(const nsIID& aIID, void**) const;
1.29 +
1.30 + private:
1.31 + nsIArray* mArray;
1.32 + uint32_t mIndex;
1.33 + nsresult* mErrorPtr;
1.34 + };
1.35 +
1.36 +inline
1.37 +const nsQueryArrayElementAt
1.38 +do_QueryElementAt(nsIArray* aArray, uint32_t aIndex, nsresult* aErrorPtr = 0)
1.39 + {
1.40 + return nsQueryArrayElementAt(aArray, aIndex, aErrorPtr);
1.41 + }
1.42 +
1.43 +#endif // nsArrayUtils_h__
