зеркало из https://github.com/mozilla/gecko-dev.git
137 строки
8.3 KiB
C++
137 строки
8.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/*
|
|
* 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 Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All
|
|
* Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*/
|
|
|
|
#ifndef nsAgg_h___
|
|
#define nsAgg_h___
|
|
|
|
#include "nsISupports.h"
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
// Put this in your class's declaration:
|
|
#define NS_DECL_AGGREGATED \
|
|
NS_DECL_ISUPPORTS \
|
|
\
|
|
public: \
|
|
\
|
|
/* You must implement this operation instead of the nsISupports */ \
|
|
/* methods if you inherit from nsAggregated. */ \
|
|
NS_IMETHOD \
|
|
AggregatedQueryInterface(const nsIID& aIID, void** aInstancePtr); \
|
|
\
|
|
protected: \
|
|
\
|
|
class Internal : public nsISupports { \
|
|
public: \
|
|
\
|
|
Internal() {} \
|
|
\
|
|
NS_IMETHOD QueryInterface(const nsIID& aIID, \
|
|
void** aInstancePtr); \
|
|
NS_IMETHOD_(nsrefcnt) AddRef(void); \
|
|
NS_IMETHOD_(nsrefcnt) Release(void); \
|
|
\
|
|
}; \
|
|
\
|
|
friend class Internal; \
|
|
\
|
|
nsISupports* fOuter; \
|
|
Internal fAggregated; \
|
|
\
|
|
nsISupports* GetInner(void) { return &fAggregated; } \
|
|
\
|
|
public: \
|
|
|
|
|
|
// Put this in your class's constructor:
|
|
#define NS_INIT_AGGREGATED(outer) \
|
|
PR_BEGIN_MACRO \
|
|
NS_INIT_REFCNT(); \
|
|
fOuter = outer ? outer : &fAggregated; \
|
|
PR_END_MACRO
|
|
|
|
|
|
// Put this in your class's implementation file:
|
|
#define NS_IMPL_AGGREGATED(_class) \
|
|
NS_IMETHODIMP \
|
|
_class::QueryInterface(const nsIID& aIID, void** aInstancePtr) \
|
|
{ \
|
|
return fOuter->QueryInterface(aIID, aInstancePtr); \
|
|
} \
|
|
\
|
|
NS_IMETHODIMP_(nsrefcnt) \
|
|
_class::AddRef(void) \
|
|
{ \
|
|
return fOuter->AddRef(); \
|
|
} \
|
|
\
|
|
NS_IMETHODIMP_(nsrefcnt) \
|
|
_class::Release(void) \
|
|
{ \
|
|
return fOuter->Release(); \
|
|
} \
|
|
\
|
|
NS_IMETHODIMP \
|
|
_class::Internal::QueryInterface(const nsIID& aIID, void** aInstancePtr) \
|
|
{ \
|
|
_class* agg = (_class*)((char*)(this) - offsetof(_class, fAggregated)); \
|
|
return agg->AggregatedQueryInterface(aIID, aInstancePtr); \
|
|
} \
|
|
\
|
|
NS_IMETHODIMP_(nsrefcnt) \
|
|
_class::Internal::AddRef(void) \
|
|
{ \
|
|
_class* agg = (_class*)((char*)(this) - offsetof(_class, fAggregated)); \
|
|
NS_PRECONDITION(PRInt32(agg->mRefCnt) >= 0, "illegal refcnt"); \
|
|
++agg->mRefCnt; \
|
|
NS_LOG_ADDREF(this, agg->mRefCnt, #_class, sizeof(*this)); \
|
|
return agg->mRefCnt; \
|
|
} \
|
|
\
|
|
NS_IMETHODIMP_(nsrefcnt) \
|
|
_class::Internal::Release(void) \
|
|
{ \
|
|
_class* agg = (_class*)((char*)(this) - offsetof(_class, fAggregated)); \
|
|
NS_PRECONDITION(0 != agg->mRefCnt, "dup release"); \
|
|
--agg->mRefCnt; \
|
|
NS_LOG_RELEASE(this, agg->mRefCnt, #_class); \
|
|
if (agg->mRefCnt == 0) { \
|
|
agg->mRefCnt = 1; /* stabilize */ \
|
|
NS_DELETEXPCOM(agg); \
|
|
return 0; \
|
|
} \
|
|
return agg->mRefCnt; \
|
|
} \
|
|
|
|
// for use with QI macros in nsISupportsUtils.h:
|
|
|
|
#define NS_IMPL_AGGREGATED_QUERY_HEAD(_class) \
|
|
NS_IMETHODIMP _class::AggregatedQueryInterface(REFNSIID aIID, void** aInstancePtr) \
|
|
{ \
|
|
NS_ASSERTION(aInstancePtr, "AggregatedQueryInterface requires a non-NULL destination!"); \
|
|
if ( !aInstancePtr ) \
|
|
return NS_ERROR_NULL_POINTER; \
|
|
nsISupports* foundInterface;
|
|
|
|
#endif /* nsAgg_h___ */
|