gecko-dev/xpcom/glue/nsCOMPtr.cpp

90 строки
2.9 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Scott Collins <scc@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
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* decision by deleting the provisions above and replace them with the notice
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* the provisions above, a recipient may use your version of this file under
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*
* ***** END LICENSE BLOCK ***** */
#include "nsCOMPtr.h"
nsresult
nsQueryInterface::operator()( const nsIID& aIID, void** answer ) const
{
nsresult status;
if ( mRawPtr )
{
status = mRawPtr->QueryInterface(aIID, answer);
#ifdef NSCAP_FEATURE_TEST_NONNULL_QUERY_SUCCEEDS
NS_WARN_IF_FALSE(NS_SUCCEEDED(status), "interface not found---were you expecting that?");
#endif
}
else
status = NS_ERROR_NULL_POINTER;
if ( mErrorPtr )
*mErrorPtr = status;
return status;
}
nsCOMPtr_base::~nsCOMPtr_base()
{
NSCAP_LOG_RELEASE(this, mRawPtr);
if ( mRawPtr )
NSCAP_RELEASE(this, mRawPtr);
}
void
nsCOMPtr_base::assign_with_AddRef( nsISupports* rawPtr )
{
if ( rawPtr )
NSCAP_ADDREF(this, rawPtr);
assign_assuming_AddRef(rawPtr);
}
void
nsCOMPtr_base::assign_from_helper( const nsCOMPtr_helper& helper, const nsIID& iid )
{
nsISupports* newRawPtr;
if ( NS_FAILED( helper(iid, NS_REINTERPRET_CAST(void**, &newRawPtr)) ) )
newRawPtr = 0;
assign_assuming_AddRef(newRawPtr);
}
void**
nsCOMPtr_base::begin_assignment()
{
assign_assuming_AddRef(0);
return NS_REINTERPRET_CAST(void**, &mRawPtr);
}