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Significantly upgraded functionality to automatically call QueryInterface when assigning in incompatible pointers.

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This commit is contained in:
scc%netscape.com 1998-12-11 23:43:00 +00:00
parent 9b704d93ce
commit ca4a0f65a8
1 changed files with 122 additions and 16 deletions
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138
xpcom/tests/test_COM_auto_ptr.cpp
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@ -19,6 +19,8 @@
#include <iostream.h>
#include <assert.h>
#include "COM_auto_ptr.h"
#include "nsISupports.h"
#ifndef NSCAP_NO_NEW_CASTS
@ -28,15 +30,22 @@
#endif
class IFoo // : public ISupports
#define NS_IFOO_IID \
{ 0x6f7652e0, 0xee43, 0x11d1, \
{ 0x9c, 0xc3, 0x00, 0x60, 0x08, 0x8c, 0xa6, 0xb3 } }
class IFoo : public nsISupports
{
public:
public:
static const nsIID& IID() { static nsIID iid = NS_IFOO_IID; return iid; }
public:
IFoo();
virtual ~IFoo();
virtual unsigned long AddRef();
virtual unsigned long Release();
// virtual NS_RESULT QueryInterface
NS_IMETHOD_(nsrefcnt) AddRef();
NS_IMETHOD_(nsrefcnt) Release();
NS_IMETHOD QueryInterface( const nsIID&, void** );
static void print_totals();
@ -53,8 +62,8 @@ class IBar;
typedef unsigned long NS_RESULT;
// some functions I'll need (and define below)
NS_RESULT CreateIFoo( void** );
NS_RESULT CreateIBar( void** result );
nsresult CreateIFoo( void** );
nsresult CreateIBar( void** result );
void AnIFooPtrPtrContext( IFoo** );
void AVoidPtrPtrContext( void** );
void set_a_IFoo( COM_auto_ptr<IFoo>* result );
@ -107,7 +116,7 @@ IFoo::~IFoo()
cout << "IFoo@" << STATIC_CAST(void*, this) << "::~IFoo()" << " [#" << total_destructions_ << "]" << endl;
}
unsigned long
nsrefcnt
IFoo::AddRef()
{
++refcount_;
@ -115,7 +124,7 @@ IFoo::AddRef()
return refcount_;
}
unsigned long
nsrefcnt
IFoo::Release()
{
int wrap_message = (refcount_ == 1);
@ -137,7 +146,31 @@ IFoo::Release()
return refcount_;
}
NS_RESULT
nsresult
IFoo::QueryInterface( const nsIID& aIID, void** aResult )
{
cout << "IFoo@" << STATIC_CAST(void*, this) << "::QueryInterface()" << endl;
nsISupports* rawPtr = 0;
nsresult status = NS_OK;
if ( aIID.Equals(IID()) )
rawPtr = this;
else
{
nsID iid_of_ISupports = NS_ISUPPORTS_IID;
if ( aIID.Equals(iid_of_ISupports) )
rawPtr = STATIC_CAST(nsISupports*, this);
else
status = NS_ERROR_NO_INTERFACE;
}
NS_IF_ADDREF(rawPtr);
*aResult = rawPtr;
return status;
}
nsresult
CreateIFoo( void** result )
// a typical factory function (that calls AddRef)
{
@ -175,11 +208,20 @@ return_a_IFoo()
#define NS_IBAR_IID \
{ 0x6f7652e1, 0xee43, 0x11d1, \
{ 0x9c, 0xc3, 0x00, 0x60, 0x08, 0x8c, 0xa6, 0xb3 } }
class IBar : public IFoo
{
public:
static const nsIID& IID() { static nsIID iid = NS_IBAR_IID; return iid; }
public:
IBar();
virtual ~IBar();
NS_IMETHOD QueryInterface( const nsIID&, void** );
};
IBar::IBar()
@ -192,9 +234,35 @@ IBar::~IBar()
cout << "IBar@" << STATIC_CAST(void*, this) << "::~IBar()" << endl;
}
nsresult
IBar::QueryInterface( const nsID& aIID, void** aResult )
{
cout << "IBar@" << STATIC_CAST(void*, this) << "::QueryInterface()" << endl;
nsISupports* rawPtr = 0;
nsresult status = NS_OK;
if ( aIID.Equals(IID()) )
rawPtr = this;
else if ( aIID.Equals(IFoo::IID()) )
rawPtr = STATIC_CAST(IFoo*, this);
else
{
nsID iid_of_ISupports = NS_ISUPPORTS_IID;
if ( aIID.Equals(iid_of_ISupports) )
rawPtr = STATIC_CAST(nsISupports*, this);
else
status = NS_ERROR_NO_INTERFACE;
}
NS_IF_ADDREF(rawPtr);
*aResult = rawPtr;
return status;
}
NS_RESULT
nsresult
CreateIBar( void** result )
// a typical factory function (that calls AddRef)
{
@ -339,30 +407,68 @@ main()
{
cout << endl << "### Test 17: basic parameter behavior?" << endl;
cout << endl << "### setup for Test 17" << endl;
COM_auto_ptr<IFoo> foop;
cout << "### Test 17: basic parameter behavior?" << endl;
CreateIFoo( nsGetterAddRefs<IFoo>(foop) );
}
cout << "### End Test 17" << endl;
{
cout << endl << "### Test 18: basic parameter behavior, using the short form?" << endl;
cout << endl << "### setup for Test 18" << endl;
COM_auto_ptr<IFoo> foop;
cout << "### Test 18: basic parameter behavior, using the short form?" << endl;
CreateIFoo( getter_AddRefs(foop) );
}
cout << "### End Test 18" << endl;
{
cout << endl << "### Test 19: reference parameter behavior?" << endl;
cout << endl << "### setup for Test 19, 20" << endl;
COM_auto_ptr<IFoo> foop;
cout << "### Test 19: reference parameter behavior?" << endl;
set_a_IFoo(&foop);
cout << endl << "### Test 20: return value behavior?" << endl;
cout << "### Test 20: return value behavior?" << endl;
foop = return_a_IFoo();
}
cout << "### End Test 19, 20" << endl;
{
cout << endl << "### setup for Test 21" << endl;
COM_auto_ptr<IFoo> fooP;
cout << "### Test 21: is |QueryInterface| called on assigning in a raw pointer?" << endl;
fooP = new IFoo;
}
cout << "### End Test 21" << endl;
{
cout << endl << "### setup for Test 22" << endl;
COM_auto_ptr<IFoo> fooP;
fooP = new IFoo;
COM_auto_ptr<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;
COM_auto_ptr<IBar> barP( new IBar );
cout << "### Test 23: is |QueryInterface| called when assigning in a smart-pointer of a different type?" << endl;
if ( COM_auto_ptr<IFoo> fooP( barP ) )
cout << "an IBar* is an IFoo*" << endl;
}
cout << "### End Test 23" << endl;
cout << endl << "### Test 21: will a static |COM_auto_ptr| |Release| before program termination?" << endl;
cout << endl << "### Test 24: will a static |COM_auto_ptr| |Release| before program termination?" << endl;
gFoop = new IFoo;
cout << "<<main()" << endl;