examples/Basics/ExtensionPattern/src_original_v2/NumberStoreOriginalImplementation_v2.cpp

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Description:
CPP file demonstrating Extension DLL pattern
This file contains the original implementation of the CNumberStore function.
This file has _not_ been modified in order to add public extension functions.
The only extension is to add the private "DoMultiplyNumbers" function which is
deliberately "private" to stop code calling it.  It must be called through the 
public "MultiplyNumbers" function which is available in the extension dll.  
*/



#include <NumberStore.h>

        
//This constant is defined in the CPP to demonstrate an intrusive change; 
//DoMultiplyNumbers must be implemented in this DLL in order to see this const  
const TInt KMagicMultiplyer=2;

//Function implementations of all _original_ functions

EXPORT_C CNumberStore::CNumberStore ()
        {
        }

EXPORT_C CNumberStore::CNumberStore (TInt aNumber1, TInt aNumber2)
        {
        SetNumber1(aNumber1);
        SetNumber2(aNumber2);
        }

EXPORT_C void CNumberStore::SetNumber1 (TInt aNumber1)
        {
        iNumber1=aNumber1;
        }

EXPORT_C void CNumberStore::SetNumber2 (TInt aNumber2)
        {
        iNumber2=aNumber2;
        }

EXPORT_C TInt CNumberStore::Number1 () const
        {
        return iNumber1;
        }

EXPORT_C TInt CNumberStore::Number2 () const
        {
        return iNumber2;
        }

// Five new functions added in version 2 of the DLL
// Each of these set to panic to demonstrate if any legacy code calls them inadvertently
EXPORT_C void NewOwnerFunction1()
        {
        User::Panic(_L("New Function Called"),1);
        }
        
EXPORT_C void NewOwnerFunction2()
        {
        User::Panic(_L("New Function Called"),2);
        }
        
EXPORT_C void NewOwnerFunction3()
        {
        User::Panic(_L("New Function Called"),3);
        }
        
EXPORT_C void NewOwnerFunction4()
        {
        User::Panic(_L("New Function Called"),4);
        }
        
EXPORT_C void NewOwnerFunction5()
        {
        User::Panic(_L("New Function Called"),5);
        }
        
//Function implementations of private functions which are only used by the extension dll
//Note that this function occurs at a different ordinal position in the lib / def file due
//to the addition of the 5 new functions above
//This function must be defined in this file so it can see KMagicMultiplyer.
EXPORT_C TInt CNumberStore::DoMultiplyNumbers() const
        {
        return (iNumber1*iNumber2*KMagicMultiplyer);
        }

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