Re: [Quantlib-dev] Return object in QLXL

[Ferdinando M. A. <fer...@am...>]

Hi Peter

> What I do not manage is to export a member function in another object of
> type A which returns a shared_ptr to another type B.

here it is, namely a SwapRateHelper returning a shared_ptr<VanillaSwap>
using its own SwapRateHelper::swap() method:

   VanillaSwap::VanillaSwap(
       const shared_ptr<ValueObject>& properties,
       const shared_ptr<QuantLib::SwapRateHelper>& swapRH,
       bool permanent)
   : Swap(properties, permanent)
   {
       libraryObject_ = swapRH->swap();
   }

and the wrapping code is auto-generated by the following xml:

    <Constructor name='qlVanillaSwapFromSwapRateHelper'>
      <libraryFunction>VanillaSwap</libraryFunction>
      <SupportedPlatforms>
        <SupportedPlatform name='Excel'/>
        <SupportedPlatform name='Cpp'/>
      </SupportedPlatforms>
      <ParameterList>
        <Parameters>
          <Parameter name='SwapRateHelper'>
            <type>QuantLib::SwapRateHelper</type>
            <tensorRank>scalar</tensorRank>
            <description>SwapRateHelper object ID.</description>
          </Parameter>
        </Parameters>
      </ParameterList>
    </Constructor>

The key point here is that even if in C++ swap() is just a method
of SwapRateHelper returning shared_ptr<VanillaSwap>, in QLXL is used as
"constructor" of a new Object wrapping the shared_ptr<VanillaSwap>

does this answer your question?

ciao -- Nando