gecko-dev/xpcom/base/nsQueryObject.h
Chris Peterson 37efe4d0e6 Bug 1428535 - Add missing override specifiers to overridden virtual functions. r=froydnj
MozReview-Commit-ID: DCPTnyBooIe

--HG--
extra : rebase_source : cfec2d96faeb11656d86d760a34e0a04cacddb13
extra : intermediate-source : 6176724d63788b0fe8caa3f91607c2d93dbaa7ec
extra : source : eebbb0600447f9b64aae3bcd47b4be66c02a51ea
2017-11-05 19:37:28 -08:00

110 lines
2.7 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsQueryObject_h
#define nsQueryObject_h
#include "mozilla/Attributes.h"
#include "nsCOMPtr.h"
#include "mozilla/RefPtr.h"
/*****************************************************************************/
template<class T>
class MOZ_STACK_CLASS nsQueryObject final : public nsCOMPtr_helper
{
public:
explicit nsQueryObject(T* aRawPtr)
: mRawPtr(aRawPtr)
{
}
virtual nsresult NS_FASTCALL operator()(const nsIID& aIID,
void** aResult) const override
{
nsresult status = mRawPtr ? mRawPtr->QueryInterface(aIID, aResult)
: NS_ERROR_NULL_POINTER;
return status;
}
private:
T* MOZ_NON_OWNING_REF mRawPtr;
};
template<class T>
class MOZ_STACK_CLASS nsQueryObjectWithError final : public nsCOMPtr_helper
{
public:
nsQueryObjectWithError(T* aRawPtr, nsresult* aErrorPtr)
: mRawPtr(aRawPtr), mErrorPtr(aErrorPtr)
{
}
virtual nsresult NS_FASTCALL operator()(const nsIID& aIID,
void** aResult) const override
{
nsresult status = mRawPtr ? mRawPtr->QueryInterface(aIID, aResult)
: NS_ERROR_NULL_POINTER;
if (mErrorPtr) {
*mErrorPtr = status;
}
return status;
}
private:
T* MOZ_NON_OWNING_REF mRawPtr;
nsresult* mErrorPtr;
};
/*****************************************************************************/
/*****************************************************************************/
template<class T>
inline nsQueryObject<T>
do_QueryObject(T* aRawPtr)
{
return nsQueryObject<T>(aRawPtr);
}
template<class T>
inline nsQueryObject<T>
do_QueryObject(nsCOMPtr<T>& aRawPtr)
{
return nsQueryObject<T>(aRawPtr);
}
template<class T>
inline nsQueryObject<T>
do_QueryObject(RefPtr<T>& aRawPtr)
{
return nsQueryObject<T>(aRawPtr);
}
template<class T>
inline nsQueryObjectWithError<T>
do_QueryObject(T* aRawPtr, nsresult* aErrorPtr)
{
return nsQueryObjectWithError<T>(aRawPtr, aErrorPtr);
}
template<class T>
inline nsQueryObjectWithError<T>
do_QueryObject(nsCOMPtr<T>& aRawPtr, nsresult* aErrorPtr)
{
return nsQueryObjectWithError<T>(aRawPtr, aErrorPtr);
}
template<class T>
inline nsQueryObjectWithError<T>
do_QueryObject(RefPtr<T>& aRawPtr, nsresult* aErrorPtr)
{
return nsQueryObjectWithError<T>(aRawPtr, aErrorPtr);
}
/*****************************************************************************/
#endif // !defined(nsQueryObject_h)