gecko-dev/xpcom/glue/nsCOMPtr.cpp

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * 1.1 (the "License"); you may not use this file except in compliance with
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 * 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
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 * Contributor(s):
 *   Scott Collins <scc@netscape.com>
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#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_ASSERTION(NS_SUCCEEDED(status), "interface not found---were you expecting that?");
#endif
			}
		else
			status = NS_ERROR_NULL_POINTER;
		
		return status;
	}

nsresult
nsQueryInterfaceWithError::operator()( const nsIID& aIID, void** answer ) const
	{
		nsresult status;
		if ( mRawPtr )
			{
				status = mRawPtr->QueryInterface(aIID, answer);
#ifdef NSCAP_FEATURE_TEST_NONNULL_QUERY_SUCCEEDS
				NS_ASSERTION(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_qi( const nsQueryInterface qi, const nsIID& iid )
  {
    void* newRawPtr;
    if ( NS_FAILED( qi(iid, &newRawPtr) ) )
      newRawPtr = 0;
    assign_assuming_AddRef(static_cast<nsISupports*>(newRawPtr));
  }

void
nsCOMPtr_base::assign_from_qi_with_error( const nsQueryInterfaceWithError& qi, const nsIID& iid )
  {
    void* newRawPtr;
    if ( NS_FAILED( qi(iid, &newRawPtr) ) )
      newRawPtr = 0;
    assign_assuming_AddRef(static_cast<nsISupports*>(newRawPtr));
  }

void
nsCOMPtr_base::assign_from_gs_cid( const nsGetServiceByCID gs, const nsIID& iid )
  {
    void* newRawPtr;
    if ( NS_FAILED( gs(iid, &newRawPtr) ) )
      newRawPtr = 0;
    assign_assuming_AddRef(static_cast<nsISupports*>(newRawPtr));
  }

void
nsCOMPtr_base::assign_from_gs_cid_with_error( const nsGetServiceByCIDWithError& gs, const nsIID& iid )
  {
    void* newRawPtr;
    if ( NS_FAILED( gs(iid, &newRawPtr) ) )
      newRawPtr = 0;
    assign_assuming_AddRef(static_cast<nsISupports*>(newRawPtr));
  }

void
nsCOMPtr_base::assign_from_gs_contractid( const nsGetServiceByContractID gs, const nsIID& iid )
  {
    void* newRawPtr;
    if ( NS_FAILED( gs(iid, &newRawPtr) ) )
      newRawPtr = 0;
    assign_assuming_AddRef(static_cast<nsISupports*>(newRawPtr));
  }

void
nsCOMPtr_base::assign_from_gs_contractid_with_error( const nsGetServiceByContractIDWithError& gs, const nsIID& iid )
  {
    void* newRawPtr;
    if ( NS_FAILED( gs(iid, &newRawPtr) ) )
      newRawPtr = 0;
    assign_assuming_AddRef(static_cast<nsISupports*>(newRawPtr));
  }

void
nsCOMPtr_base::assign_from_helper( const nsCOMPtr_helper& helper, const nsIID& iid )
  {
    void* newRawPtr;
    if ( NS_FAILED( helper(iid, &newRawPtr) ) )
      newRawPtr = 0;
    assign_assuming_AddRef(static_cast<nsISupports*>(newRawPtr));
  }

void**
nsCOMPtr_base::begin_assignment()
  {
    assign_assuming_AddRef(0);
    return reinterpret_cast<void**>(&mRawPtr);
  }