зеркало из https://github.com/mozilla/pjs.git
598 строки
14 KiB
C++
598 строки
14 KiB
C++
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/* -*- 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: MPL 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 Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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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 of the GNU General Public License Version 2 or later (the "GPL"),
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* or 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 MPL, 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 MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include <assert.h>
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#include <stdio.h>
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#include "nsCOMPtr.h"
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#include "nsAutoPtr.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_FOO_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 Foo : public nsISupports
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{
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_FOO_IID)
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public:
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Foo();
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// virtual dtor because Bar uses our Release()
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virtual ~Foo();
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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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NS_DEFINE_STATIC_IID_ACCESSOR(Foo, NS_FOO_IID)
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class Bar;
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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 CreateFoo( void** );
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nsresult CreateBar( void** result );
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void AnFooPtrPtrContext( Foo** );
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void AnISupportsPtrPtrContext( nsISupports** );
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void AVoidPtrPtrContext( void** );
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void set_a_Foo( nsRefPtr<Foo>* result );
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nsRefPtr<Foo> return_a_Foo();
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unsigned int Foo::total_constructions_;
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unsigned int Foo::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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printf("BEGIN unit tests for |nsRefPtr|, compiled " __DATE__ "\n");
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}
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~test_message()
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{
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Foo::print_totals();
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printf("END unit tests for |nsRefPtr|.\n");
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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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Foo::print_totals()
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{
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printf("total constructions/destructions --> %d/%d\n",
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total_constructions_, total_destructions_);
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}
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Foo::Foo()
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: refcount_(0)
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{
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++total_constructions_;
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printf(" new Foo@%p [#%d]\n",
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STATIC_CAST(void*, this), total_constructions_);
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}
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Foo::~Foo()
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{
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++total_destructions_;
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printf("Foo@%p::~Foo() [#%d]\n",
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STATIC_CAST(void*, this), total_destructions_);
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}
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nsrefcnt
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Foo::AddRef()
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{
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++refcount_;
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printf("Foo@%p::AddRef(), refcount --> %d\n",
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STATIC_CAST(void*, this), refcount_);
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return refcount_;
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}
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nsrefcnt
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Foo::Release()
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{
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int newcount = --refcount_;
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if ( newcount == 0 )
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printf(">>");
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printf("Foo@%p::Release(), refcount --> %d\n",
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STATIC_CAST(void*, this), refcount_);
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if ( newcount == 0 )
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{
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printf(" delete Foo@%p\n", STATIC_CAST(void*, this));
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printf("<<Foo@%p::Release()\n", STATIC_CAST(void*, this));
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delete this;
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}
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return newcount;
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}
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nsresult
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Foo::QueryInterface( const nsIID& aIID, void** aResult )
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{
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printf("Foo@%p::QueryInterface()\n", STATIC_CAST(void*, this));
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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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CreateFoo( void** result )
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// a typical factory function (that calls AddRef)
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{
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printf(">>CreateFoo() --> ");
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Foo* foop = new Foo;
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printf("Foo@%p\n", STATIC_CAST(void*, foop));
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foop->AddRef();
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*result = foop;
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printf("<<CreateFoo()\n");
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return 0;
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}
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void
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set_a_Foo( nsRefPtr<Foo>* result )
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{
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printf(">>set_a_Foo()\n");
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assert(result);
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nsRefPtr<Foo> foop( do_QueryObject(new Foo) );
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*result = foop;
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printf("<<set_a_Foo()\n");
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}
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nsRefPtr<Foo>
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return_a_Foo()
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{
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printf(">>return_a_Foo()\n");
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nsRefPtr<Foo> foop( do_QueryObject(new Foo) );
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printf("<<return_a_Foo()\n");
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return foop;
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}
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#define NS_BAR_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 Bar : public Foo
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{
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_BAR_IID)
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public:
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Bar();
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virtual ~Bar();
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NS_IMETHOD QueryInterface( const nsIID&, void** );
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(Bar, NS_BAR_IID)
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Bar::Bar()
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{
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printf(" new Bar@%p\n", STATIC_CAST(void*, this));
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}
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Bar::~Bar()
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{
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printf("Bar@%p::~Bar()\n", STATIC_CAST(void*, this));
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}
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nsresult
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Bar::QueryInterface( const nsID& aIID, void** aResult )
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{
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printf("Bar@%p::QueryInterface()\n", STATIC_CAST(void*, this));
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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(Foo)) )
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rawPtr = STATIC_CAST(Foo*, 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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CreateBar( void** result )
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// a typical factory function (that calls AddRef)
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{
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printf(">>CreateBar() --> ");
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Bar* barp = new Bar;
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printf("Bar@%p\n", STATIC_CAST(void*, barp));
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barp->AddRef();
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*result = barp;
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printf("<<CreateBar()\n");
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return 0;
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}
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void
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AnFooPtrPtrContext( Foo** )
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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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nsresult
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TestBloat_Raw_Unsafe()
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{
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Bar* barP = 0;
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nsresult result = CreateBar(REINTERPRET_CAST(void**, &barP));
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if ( barP )
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{
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Foo* fooP = 0;
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if ( NS_SUCCEEDED( result = barP->QueryInterface(NS_GET_IID(Foo), 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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nsRefPtr<Bar> barP;
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nsresult result = CreateBar( getter_AddRefs(barP) );
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nsRefPtr<Foo> fooP( do_QueryObject(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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nsRefPtr<Foo> gFoop;
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int
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main()
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{
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printf(">>main()\n");
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printf("sizeof(nsRefPtr<Foo>) --> %d\n", sizeof(nsRefPtr<Foo>));
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TestBloat_Raw_Unsafe();
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TestBloat_Smart();
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{
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printf("\n### Test 1: will a |nsCOMPtr| call |AddRef| on a pointer assigned into it?\n");
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nsRefPtr<Foo> foop( do_QueryObject(new Foo) );
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printf("\n### Test 2: will a |nsCOMPtr| |Release| its old pointer when a new one is assigned in?\n");
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foop = do_QueryObject(new Foo);
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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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printf("\n### Test 3: can you |AddRef| if you must?\n");
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STATIC_CAST(Foo*, foop)->AddRef();
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printf("\n### Test 4: can you |Release| if you must?\n");
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STATIC_CAST(Foo*, foop)->Release();
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printf("\n### Test 5: will a |nsCOMPtr| |Release| when it goes out of scope?\n");
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}
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{
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printf("\n### Test 6: will a |nsCOMPtr| call the correct destructor?\n");
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nsRefPtr<Foo> foop( do_QueryObject(new Bar) );
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}
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{
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printf("\n### Test 7: can you compare one |nsCOMPtr| with another [!=]?\n");
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nsRefPtr<Foo> foo1p( do_QueryObject(new Foo) );
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// [Shouldn't compile] Is it a compile time error to omit |getter_[doesnt_]AddRef[s]|?
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//AnFooPtrPtrContext(&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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nsRefPtr<Foo> foo2p( do_QueryObject(new Foo) );
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if ( foo1p != foo2p )
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printf("foo1p != foo2p\n");
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else
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printf("foo1p == foo2p\n");
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printf("\n### Test 7.5: can you compare a |nsCOMPtr| with NULL, 0, nsnull [!=]?\n");
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if ( foo1p != 0 )
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printf("foo1p != 0\n");
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if ( 0 != foo1p )
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printf("0 != foo1p\n");
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if ( foo1p == 0 )
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printf("foo1p == 0\n");
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if ( 0 == foo1p )
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printf("0 == foo1p\n");
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Foo* raw_foo2p = foo2p.get();
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printf("\n### Test 8: can you compare a |nsCOMPtr| with a raw interface pointer [!=]?\n");
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if ( foo1p.get() != raw_foo2p )
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printf("foo1p != raw_foo2p\n");
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else
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printf("foo1p == raw_foo2p\n");
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printf("\n### Test 9: can you assign one |nsCOMPtr| into another?\n");
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foo1p = foo2p;
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printf("\n### Test 10: can you compare one |nsCOMPtr| with another [==]?\n");
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if ( foo1p == foo2p )
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printf("foo1p == foo2p\n");
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else
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printf("foo1p != foo2p\n");
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printf("\n### Test 11: can you compare a |nsCOMPtr| with a raw interface pointer [==]?\n");
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||
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if ( raw_foo2p == foo2p.get() )
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printf("raw_foo2p == foo2p\n");
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else
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printf("raw_foo2p != foo2p\n");
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#if 1
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||
|
printf("\n### Test 11.5: can you compare a |nsCOMPtr| with a raw interface pointer [==]?\n");
|
||
|
if ( nsRefPtr<Foo>( raw_foo2p ) == foo2p )
|
||
|
printf("raw_foo2p == foo2p\n");
|
||
|
else
|
||
|
printf("raw_foo2p != foo2p\n");
|
||
|
#endif
|
||
|
|
||
|
printf("\n### Test 12: bare pointer test?\n");
|
||
|
if ( foo1p )
|
||
|
printf("foo1p is not NULL\n");
|
||
|
else
|
||
|
printf("foo1p is NULL\n");
|
||
|
|
||
|
printf("\n### Test 13: numeric pointer test?\n");
|
||
|
if ( foo1p == 0 )
|
||
|
printf("foo1p is NULL\n");
|
||
|
else
|
||
|
printf("foo1p is not NULL\n");
|
||
|
|
||
|
#if 0
|
||
|
if ( foo1p == 1 )
|
||
|
printf("foo1p allowed compare with in\n");
|
||
|
#endif
|
||
|
|
||
|
printf("\n### Test 14: how about when two |nsCOMPtr|s referring to the same object go out of scope?\n");
|
||
|
}
|
||
|
|
||
|
{
|
||
|
printf("\n### Test 15,16 ...setup...\n");
|
||
|
Foo* raw_foo1p = new Foo;
|
||
|
raw_foo1p->AddRef();
|
||
|
|
||
|
Foo* raw_foo2p = new Foo;
|
||
|
raw_foo2p->AddRef();
|
||
|
|
||
|
printf("\n### Test 15: what if I don't want to |AddRef| when I construct?\n");
|
||
|
nsRefPtr<Foo> foo1p( dont_AddRef(raw_foo1p) );
|
||
|
//nsRefPtr<Foo> foo1p = dont_AddRef(raw_foo1p);
|
||
|
|
||
|
printf("\n### Test 16: what if I don't want to |AddRef| when I assign in?\n");
|
||
|
nsRefPtr<Foo> foo2p;
|
||
|
foo2p = dont_AddRef(raw_foo2p);
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
{
|
||
|
printf("\n### setup for Test 17\n");
|
||
|
nsRefPtr<Foo> foop;
|
||
|
printf("### Test 17: basic parameter behavior?\n");
|
||
|
CreateFoo( nsRefPtrGetterAddRefs<Foo>(foop) );
|
||
|
}
|
||
|
printf("### End Test 17\n");
|
||
|
|
||
|
|
||
|
{
|
||
|
printf("\n### setup for Test 18\n");
|
||
|
nsRefPtr<Foo> foop;
|
||
|
printf("### Test 18: basic parameter behavior, using the short form?\n");
|
||
|
CreateFoo( getter_AddRefs(foop) );
|
||
|
}
|
||
|
printf("### End Test 18\n");
|
||
|
|
||
|
|
||
|
{
|
||
|
printf("\n### setup for Test 19, 20\n");
|
||
|
nsRefPtr<Foo> foop;
|
||
|
printf("### Test 19: reference parameter behavior?\n");
|
||
|
set_a_Foo(address_of(foop));
|
||
|
|
||
|
printf("### Test 20: return value behavior?\n");
|
||
|
foop = return_a_Foo();
|
||
|
}
|
||
|
printf("### End Test 19, 20\n");
|
||
|
|
||
|
{
|
||
|
printf("\n### setup for Test 21\n");
|
||
|
nsRefPtr<Foo> fooP;
|
||
|
|
||
|
printf("### Test 21: is |QueryInterface| called on assigning in a raw pointer?\n");
|
||
|
fooP = do_QueryObject(new Foo);
|
||
|
}
|
||
|
printf("### End Test 21\n");
|
||
|
|
||
|
{
|
||
|
printf("\n### setup for Test 22\n");
|
||
|
nsRefPtr<Foo> fooP;
|
||
|
fooP = do_QueryObject(new Foo);
|
||
|
|
||
|
nsRefPtr<Foo> foo2P;
|
||
|
|
||
|
printf("### Test 22: is |QueryInterface| _not_ called when assigning in a smart-pointer of the same type?\n");
|
||
|
foo2P = fooP;
|
||
|
}
|
||
|
printf("### End Test 22\n");
|
||
|
|
||
|
{
|
||
|
printf("\n### setup for Test 23\n");
|
||
|
nsRefPtr<Bar> barP( do_QueryObject(new Bar) );
|
||
|
|
||
|
printf("### Test 23: is |QueryInterface| called when assigning in a smart-pointer of a different type?\n");
|
||
|
|
||
|
nsRefPtr<Foo> fooP( do_QueryObject(barP) );
|
||
|
if ( fooP )
|
||
|
printf("an Bar* is an Foo*\n");
|
||
|
}
|
||
|
printf("### End Test 23\n");
|
||
|
|
||
|
|
||
|
{
|
||
|
printf("\n### setup for Test 24\n");
|
||
|
nsRefPtr<Foo> fooP( do_QueryObject(new Foo) );
|
||
|
|
||
|
printf("### Test 24: does |forget| avoid an AddRef/Release when assigning to another nsCOMPtr?\n");
|
||
|
nsRefPtr<Foo> fooP2( fooP.forget() );
|
||
|
}
|
||
|
printf("### End Test 24\n");
|
||
|
|
||
|
{
|
||
|
nsRefPtr<Foo> fooP;
|
||
|
|
||
|
AnFooPtrPtrContext( getter_AddRefs(fooP) );
|
||
|
AVoidPtrPtrContext( getter_AddRefs(fooP) );
|
||
|
}
|
||
|
|
||
|
|
||
|
printf("\n### Test 25: will a static |nsCOMPtr| |Release| before program termination?\n");
|
||
|
gFoop = do_QueryObject(new Foo);
|
||
|
|
||
|
printf("<<main()\n");
|
||
|
return 0;
|
||
|
}
|
||
|
|