зеркало из https://github.com/mozilla/gecko-dev.git
661 строка
16 KiB
C++
661 строка
16 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Pierre Phaneuf <pp@ludusdesign.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include <iostream.h>
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#include <assert.h>
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#include "nsCOMPtr.h"
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#include "nsISupports.h"
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#ifdef HAVE_CPP_NEW_CASTS
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#define STATIC_CAST(T,x) static_cast<T>(x)
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#define REINTERPRET_CAST(T,x) reinterpret_cast<T>(x)
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#else
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#define STATIC_CAST(T,x) ((T)(x))
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#define REINTERPRET_CAST(T,x) ((T)(x))
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#endif
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#define NS_IFOO_IID \
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{ 0x6f7652e0, 0xee43, 0x11d1, \
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{ 0x9c, 0xc3, 0x00, 0x60, 0x08, 0x8c, 0xa6, 0xb3 } }
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class IFoo : public nsISupports
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{
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public:
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NS_DEFINE_STATIC_IID_ACCESSOR(NS_IFOO_IID)
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public:
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IFoo();
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virtual ~IFoo();
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NS_IMETHOD_(nsrefcnt) AddRef();
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NS_IMETHOD_(nsrefcnt) Release();
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NS_IMETHOD QueryInterface( const nsIID&, void** );
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static void print_totals();
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private:
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unsigned int refcount_;
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static unsigned int total_constructions_;
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static unsigned int total_destructions_;
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};
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class IBar;
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// some types I'll need
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typedef unsigned long NS_RESULT;
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// some functions I'll need (and define below)
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nsresult CreateIFoo( void** );
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nsresult CreateIBar( void** result );
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void AnIFooPtrPtrContext( IFoo** );
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void AnISupportsPtrPtrContext( nsISupports** );
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void AVoidPtrPtrContext( void** );
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void set_a_IFoo( nsCOMPtr<IFoo>* result );
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nsCOMPtr<IFoo> return_a_IFoo();
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unsigned int IFoo::total_constructions_;
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unsigned int IFoo::total_destructions_;
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class test_message
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{
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public:
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test_message()
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{
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cout << "BEGIN unit tests for |nsCOMPtr|, compiled " __DATE__ << endl;
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}
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~test_message()
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{
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IFoo::print_totals();
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cout << "END unit tests for |nsCOMPtr|." << endl;
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}
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};
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test_message gTestMessage;
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/*
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...
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*/
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void
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IFoo::print_totals()
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{
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cout << "total constructions/destructions --> " << total_constructions_ << "/" << total_destructions_ << endl;
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}
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IFoo::IFoo()
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: refcount_(0)
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{
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++total_constructions_;
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cout << " new IFoo@" << STATIC_CAST(void*, this) << " [#" << total_constructions_ << "]" << endl;
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}
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IFoo::~IFoo()
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{
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++total_destructions_;
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cout << "IFoo@" << STATIC_CAST(void*, this) << "::~IFoo()" << " [#" << total_destructions_ << "]" << endl;
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}
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nsrefcnt
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IFoo::AddRef()
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{
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++refcount_;
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cout << "IFoo@" << STATIC_CAST(void*, this) << "::AddRef(), refcount --> " << refcount_ << endl;
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return refcount_;
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}
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nsrefcnt
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IFoo::Release()
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{
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int wrap_message = (refcount_ == 1);
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if ( wrap_message )
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cout << ">>";
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--refcount_;
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cout << "IFoo@" << STATIC_CAST(void*, this) << "::Release(), refcount --> " << refcount_ << endl;
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if ( !refcount_ )
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{
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cout << " delete IFoo@" << STATIC_CAST(void*, this) << endl;
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delete this;
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}
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if ( wrap_message )
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cout << "<<IFoo@" << STATIC_CAST(void*, this) << "::Release()" << endl;
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return refcount_;
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}
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nsresult
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IFoo::QueryInterface( const nsIID& aIID, void** aResult )
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{
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cout << "IFoo@" << STATIC_CAST(void*, this) << "::QueryInterface()" << endl;
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nsISupports* rawPtr = 0;
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nsresult status = NS_OK;
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if ( aIID.Equals(GetIID()) )
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rawPtr = this;
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else
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{
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nsID iid_of_ISupports = NS_ISUPPORTS_IID;
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if ( aIID.Equals(iid_of_ISupports) )
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rawPtr = STATIC_CAST(nsISupports*, this);
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else
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status = NS_ERROR_NO_INTERFACE;
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}
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NS_IF_ADDREF(rawPtr);
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*aResult = rawPtr;
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return status;
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}
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nsresult
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CreateIFoo( void** result )
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// a typical factory function (that calls AddRef)
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{
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cout << ">>CreateIFoo() --> ";
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IFoo* foop = new IFoo;
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cout << "IFoo@" << STATIC_CAST(void*, foop) << endl;
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foop->AddRef();
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*result = foop;
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cout << "<<CreateIFoo()" << endl;
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return 0;
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}
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void
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set_a_IFoo( nsCOMPtr<IFoo>* result )
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{
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cout << ">>set_a_IFoo()" << endl;
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assert(result);
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nsCOMPtr<IFoo> foop( do_QueryInterface(new IFoo) );
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*result = foop;
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cout << "<<set_a_IFoo()" << endl;
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}
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nsCOMPtr<IFoo>
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return_a_IFoo()
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{
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cout << ">>return_a_IFoo()" << endl;
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nsCOMPtr<IFoo> foop( do_QueryInterface(new IFoo) );
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cout << "<<return_a_IFoo()" << endl;
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return foop;
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}
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#define NS_IBAR_IID \
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{ 0x6f7652e1, 0xee43, 0x11d1, \
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{ 0x9c, 0xc3, 0x00, 0x60, 0x08, 0x8c, 0xa6, 0xb3 } }
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class IBar : public IFoo
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{
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public:
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NS_DEFINE_STATIC_IID_ACCESSOR(NS_IBAR_IID)
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public:
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IBar();
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virtual ~IBar();
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NS_IMETHOD QueryInterface( const nsIID&, void** );
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};
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IBar::IBar()
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{
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cout << " new IBar@" << STATIC_CAST(void*, this) << endl;
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}
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IBar::~IBar()
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{
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cout << "IBar@" << STATIC_CAST(void*, this) << "::~IBar()" << endl;
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}
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nsresult
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IBar::QueryInterface( const nsID& aIID, void** aResult )
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{
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cout << "IBar@" << STATIC_CAST(void*, this) << "::QueryInterface()" << endl;
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nsISupports* rawPtr = 0;
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nsresult status = NS_OK;
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if ( aIID.Equals(GetIID()) )
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rawPtr = this;
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else if ( aIID.Equals(NS_GET_IID(IFoo)) )
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rawPtr = STATIC_CAST(IFoo*, this);
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else
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{
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nsID iid_of_ISupports = NS_ISUPPORTS_IID;
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if ( aIID.Equals(iid_of_ISupports) )
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rawPtr = STATIC_CAST(nsISupports*, this);
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else
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status = NS_ERROR_NO_INTERFACE;
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}
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NS_IF_ADDREF(rawPtr);
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*aResult = rawPtr;
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return status;
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}
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nsresult
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CreateIBar( void** result )
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// a typical factory function (that calls AddRef)
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{
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cout << ">>CreateIBar() --> ";
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IBar* barp = new IBar;
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cout << "IBar@" << STATIC_CAST(void*, barp) << endl;
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barp->AddRef();
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*result = barp;
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cout << "<<CreateIBar()" << endl;
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return 0;
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}
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void
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AnIFooPtrPtrContext( IFoo** )
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{
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}
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void
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AVoidPtrPtrContext( void** )
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{
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}
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void
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AnISupportsPtrPtrContext( nsISupports** )
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{
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}
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// Optimism
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#define TEST_EXCEPTIONS 1
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// HAVE_CPP_EXCEPTIONS is defined automagically on unix
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#if defined(XP_UNIX) || defined(XP_BEOS) || defined(XP_OS2)
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#if !defined(HAVE_CPP_EXCEPTIONS)
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#undef TEST_EXCEPTIONS
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#endif
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#endif
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#ifdef TEST_EXCEPTIONS
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static
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nsresult
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TestBloat_Raw()
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{
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IBar* barP = 0;
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nsresult result = CreateIBar(REINTERPRET_CAST(void**, &barP));
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if ( barP )
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{
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try
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{
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IFoo* fooP = 0;
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if ( NS_SUCCEEDED( result = barP->QueryInterface(NS_GET_IID(IFoo), REINTERPRET_CAST(void**, &fooP)) ) )
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{
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try
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{
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fooP->print_totals();
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}
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catch( ... )
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{
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NS_RELEASE(fooP);
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throw;
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}
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NS_RELEASE(fooP);
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}
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}
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catch( ... )
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{
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NS_RELEASE(barP);
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throw;
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}
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NS_RELEASE(barP);
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}
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return result;
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}
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#endif // TEST_EXCEPTIONS
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static
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nsresult
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TestBloat_Raw_Unsafe()
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{
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IBar* barP = 0;
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nsresult result = CreateIBar(REINTERPRET_CAST(void**, &barP));
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if ( barP )
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{
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IFoo* fooP = 0;
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if ( NS_SUCCEEDED( result = barP->QueryInterface(NS_GET_IID(IFoo), REINTERPRET_CAST(void**, &fooP)) ) )
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{
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fooP->print_totals();
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NS_RELEASE(fooP);
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}
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NS_RELEASE(barP);
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}
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return result;
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}
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static
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nsresult
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TestBloat_Smart()
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{
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nsCOMPtr<IBar> barP;
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nsresult result = CreateIBar( getter_AddRefs(barP) );
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nsCOMPtr<IFoo> fooP( do_QueryInterface(barP, &result) );
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if ( fooP )
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fooP->print_totals();
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return result;
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}
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nsCOMPtr<IFoo> gFoop;
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int
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main()
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{
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cout << ">>main()" << endl;
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cout << "sizeof(nsCOMPtr<IFoo>) --> " << sizeof(nsCOMPtr<IFoo>) << endl;
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#ifdef TEST_EXCEPTIONS
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TestBloat_Raw();
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#endif // TEST_EXCEPTIONS
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TestBloat_Raw_Unsafe();
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TestBloat_Smart();
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{
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cout << endl << "### Test 1: will a |nsCOMPtr| call |AddRef| on a pointer assigned into it?" << endl;
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nsCOMPtr<IFoo> foop( do_QueryInterface(new IFoo) );
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cout << endl << "### Test 2: will a |nsCOMPtr| |Release| its old pointer when a new one is assigned in?" << endl;
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foop = do_QueryInterface(new IFoo);
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// [Shouldn't compile] Is it a compile time error to try to |AddRef| by hand?
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//foop->AddRef();
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// [Shouldn't compile] Is it a compile time error to try to |Release| be hand?
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//foop->Release();
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// [Shouldn't compile] Is it a compile time error to try to |delete| an |nsCOMPtr|?
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//delete foop;
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/* Solaris Workshop compiler fails to compile this. */
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#if !defined(XP_UNIX) || !(defined(SOLARIS) && !defined(__GNUG__))
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cout << endl << "### Test 3: can you |AddRef| if you must?" << endl;
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STATIC_CAST(IFoo*, foop)->AddRef();
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cout << endl << "### Test 4: can you |Release| if you must?" << endl;
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STATIC_CAST(IFoo*, foop)->Release();
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#endif
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cout << endl << "### Test 5: will a |nsCOMPtr| |Release| when it goes out of scope?" << endl;
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}
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{
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cout << endl << "### Test 6: will a |nsCOMPtr| call the correct destructor?" << endl;
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nsCOMPtr<IFoo> foop( do_QueryInterface(new IBar) );
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}
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{
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cout << endl << "### Test 7: can you compare one |nsCOMPtr| with another [!=]?" << endl;
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nsCOMPtr<IFoo> foo1p( do_QueryInterface(new IFoo) );
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// [Shouldn't compile] Is it a compile time error to omit |getter_[doesnt_]AddRef[s]|?
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//AnIFooPtrPtrContext(&foo1p);
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// [Shouldn't compile] Is it a compile time error to omit |getter_[doesnt_]AddRef[s]|?
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//AVoidPtrPtrContext(&foo1p);
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nsCOMPtr<IFoo> foo2p( do_QueryInterface(new IFoo) );
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if ( foo1p != foo2p )
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cout << "foo1p != foo2p" << endl;
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else
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cout << "foo1p == foo2p" << endl;
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cout << endl << "### Test 7.5: can you compare a |nsCOMPtr| with NULL, 0, nsnull [!=]?" << endl;
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if ( foo1p != 0 )
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cout << "foo1p != 0" << endl;
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if ( 0 != foo1p )
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cout << "0 != foo1p" << endl;
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if ( foo1p == 0 )
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cout << "foo1p == 0" << endl;
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if ( 0 == foo1p )
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cout << "0 == foo1p" << endl;
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IFoo* raw_foo2p = foo2p.get();
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cout << endl << "### Test 8: can you compare a |nsCOMPtr| with a raw interface pointer [!=]?" << endl;
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if ( foo1p.get() != raw_foo2p )
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cout << "foo1p != raw_foo2p" << endl;
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else
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cout << "foo1p == raw_foo2p" << endl;
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cout << endl << "### Test 9: can you assign one |nsCOMPtr| into another?" << endl;
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foo1p = foo2p;
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cout << endl << "### Test 10: can you compare one |nsCOMPtr| with another [==]?" << endl;
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if ( foo1p == foo2p )
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cout << "foo1p == foo2p" << endl;
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else
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cout << "foo1p != foo2p" << endl;
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cout << endl << "### Test 11: can you compare a |nsCOMPtr| with a raw interface pointer [==]?" << endl;
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if ( raw_foo2p == foo2p.get() )
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cout << "raw_foo2p == foo2p" << endl;
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else
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cout << "raw_foo2p != foo2p" << endl;
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#if 1
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cout << endl << "### Test 11.5: can you compare a |nsCOMPtr| with a raw interface pointer [==]?" << endl;
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if ( nsCOMPtr<IFoo>( dont_QueryInterface(raw_foo2p) ) == foo2p )
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cout << "raw_foo2p == foo2p" << endl;
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else
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cout << "raw_foo2p != foo2p" << endl;
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#endif
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cout << endl << "### Test 12: bare pointer test?" << endl;
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if ( foo1p )
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cout << "foo1p is not NULL" << endl;
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else
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cout << "foo1p is NULL" << endl;
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cout << endl << "### Test 13: numeric pointer test?" << endl;
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if ( foo1p == 0 )
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cout << "foo1p is NULL" << endl;
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else
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cout << "foo1p is not NULL" << endl;
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#if 0
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if ( foo1p == 1 )
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cout << "foo1p allowed compare with in" << endl;
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#endif
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cout << endl << "### Test 14: how about when two |nsCOMPtr|s refering to the same object go out of scope?" << endl;
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}
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{
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cout << endl << "### Test 15,16 ...setup..." << endl;
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IFoo* raw_foo1p = new IFoo;
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raw_foo1p->AddRef();
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IFoo* raw_foo2p = new IFoo;
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raw_foo2p->AddRef();
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|
|
cout << endl << "### Test 15: what if I don't want to |AddRef| when I construct?" << endl;
|
|
nsCOMPtr<IFoo> foo1p( dont_AddRef(raw_foo1p) );
|
|
//nsCOMPtr<IFoo> foo1p = dont_AddRef(raw_foo1p);
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|
|
cout << endl << "### Test 16: what if I don't want to |AddRef| when I assign in?" << endl;
|
|
nsCOMPtr<IFoo> foo2p;
|
|
foo2p = dont_AddRef(raw_foo2p);
|
|
}
|
|
|
|
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|
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|
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|
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|
|
{
|
|
cout << endl << "### setup for Test 17" << endl;
|
|
nsCOMPtr<IFoo> foop;
|
|
cout << "### Test 17: basic parameter behavior?" << endl;
|
|
CreateIFoo( nsGetterAddRefs<IFoo>(foop) );
|
|
}
|
|
cout << "### End Test 17" << endl;
|
|
|
|
|
|
{
|
|
cout << endl << "### setup for Test 18" << endl;
|
|
nsCOMPtr<IFoo> foop;
|
|
cout << "### Test 18: basic parameter behavior, using the short form?" << endl;
|
|
CreateIFoo( getter_AddRefs(foop) );
|
|
}
|
|
cout << "### End Test 18" << endl;
|
|
|
|
|
|
{
|
|
cout << endl << "### setup for Test 19, 20" << endl;
|
|
nsCOMPtr<IFoo> foop;
|
|
cout << "### Test 19: reference parameter behavior?" << endl;
|
|
set_a_IFoo(address_of(foop));
|
|
|
|
cout << "### Test 20: return value behavior?" << endl;
|
|
foop = return_a_IFoo();
|
|
}
|
|
cout << "### End Test 19, 20" << endl;
|
|
|
|
{
|
|
cout << endl << "### setup for Test 21" << endl;
|
|
nsCOMPtr<IFoo> fooP;
|
|
|
|
cout << "### Test 21: is |QueryInterface| called on assigning in a raw pointer?" << endl;
|
|
fooP = do_QueryInterface(new IFoo);
|
|
}
|
|
cout << "### End Test 21" << endl;
|
|
|
|
{
|
|
cout << endl << "### setup for Test 22" << endl;
|
|
nsCOMPtr<IFoo> fooP;
|
|
fooP = do_QueryInterface(new IFoo);
|
|
|
|
nsCOMPtr<IFoo> foo2P;
|
|
|
|
cout << "### Test 22: is |QueryInterface| _not_ called when assigning in a smart-pointer of the same type?" << endl;
|
|
foo2P = fooP;
|
|
}
|
|
cout << "### End Test 22" << endl;
|
|
|
|
{
|
|
cout << endl << "### setup for Test 23" << endl;
|
|
nsCOMPtr<IBar> barP( do_QueryInterface(new IBar) );
|
|
|
|
cout << "### Test 23: is |QueryInterface| called when assigning in a smart-pointer of a different type?" << endl;
|
|
|
|
nsCOMPtr<IFoo> fooP( do_QueryInterface(barP) );
|
|
if ( fooP )
|
|
cout << "an IBar* is an IFoo*" << endl;
|
|
}
|
|
cout << "### End Test 23" << endl;
|
|
|
|
|
|
{
|
|
cout << endl << "### setup for Test 24" << endl;
|
|
nsCOMPtr<IFoo> fooP;
|
|
IFoo* rawFooP = new IFoo;
|
|
|
|
cout << "### Test 24: is |QueryInterface| _not_ called when explicitly barred?" << endl;
|
|
fooP = dont_QueryInterface(rawFooP);
|
|
cout << "### cleanup for Test 24" << endl;
|
|
}
|
|
cout << "### End Test 24" << endl;
|
|
|
|
|
|
{
|
|
nsCOMPtr<IFoo> fooP;
|
|
|
|
AnIFooPtrPtrContext( getter_AddRefs(fooP) );
|
|
AVoidPtrPtrContext( getter_AddRefs(fooP) );
|
|
AnISupportsPtrPtrContext( getter_AddRefs(fooP) );
|
|
}
|
|
|
|
|
|
{
|
|
nsCOMPtr<nsISupports> supportsP;
|
|
|
|
AVoidPtrPtrContext( getter_AddRefs(supportsP) );
|
|
AnISupportsPtrPtrContext( getter_AddRefs(supportsP) );
|
|
}
|
|
|
|
|
|
cout << endl << "### Test 25: will a static |nsCOMPtr| |Release| before program termination?" << endl;
|
|
gFoop = do_QueryInterface(new IFoo);
|
|
|
|
cout << "<<main()" << endl;
|
|
return 0;
|
|
}
|
|
|