gecko/xpcom/glue/nsIInterfaceRequestorUtils.cpp

34 lines
914 B
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/. */
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
nsresult
nsGetInterface::operator()(const nsIID& aIID, void** aInstancePtr) const
{
nsresult status;
if (mSource) {
nsCOMPtr<nsIInterfaceRequestor> factoryPtr = do_QueryInterface(mSource);
if (factoryPtr) {
status = factoryPtr->GetInterface(aIID, aInstancePtr);
} else {
status = NS_ERROR_NO_INTERFACE;
}
} else {
status = NS_ERROR_NULL_POINTER;
}
if (NS_FAILED(status)) {
*aInstancePtr = 0;
}
if (mErrorPtr) {
*mErrorPtr = status;
}
return status;
}