Thanks Mark,
it looks like I didn't properly understand what Rick told me.
Jon
2008/8/19 Mark Miesfeld <[EMAIL PROTECTED]>
> On Tue, Aug 19, 2008 at 5:07 AM, Mark Miesfeld <[EMAIL PROTECTED]> wrote:
> >
> >> + INTERNAL_METHOD(rexx_erase_queue)
> >
> >> +RexxMethod0(int, rexx_clear_queue)
> >
> >> +::METHOD empty EXTERNAL 'LIBRARY REXX rexx_clear_queue'
> >
> > You can not define the name as rexx_erase_queue in one place and then
> > expect rexx_clear_queue to be understood in another place.
>
> Jon,
>
> I think it would be better if you use the the word empty in the name.
> It is consistent with the other names in the RexxQueueMethods.cpp
> file. The above would become:
>
> + INTERNAL_METHOD(rexx_empty_queue)
>
> +RexxMethod0(int, rexx_empty_queue)
>
> +::METHOD empty EXTERNAL 'LIBRARY REXX rexx_empty_queue'
>
> FYI to understand this a little better: The name rexx_empty_queue is
> the name of C++ function (or you could think of it as a method name)
> that implements the functionality of the ooRexx empty() method.
>
> Just as you wouldn't expect to be able to use 2 different method names
> in ooRexx for the same method, you can't use 2 different names in the
> C++ code for the same function.
>
> It is a little harder to see that all 3 lines above refer to the same
> thing because they are in different files, but they do.
>
> This line:
>
> +::METHOD empty EXTERNAL 'LIBRARY REXX rexx_empty_queue'
>
> Tells the interpreter that when the the ooRexx empty() method is
> invoked, it should call the C++ function with a name of
> "rexx_empty_queue" in an external library with the name of "REXX" On
> Windows this is a DLL and the name of REXX resolves to a DLL name of
> rexx.dll.
>
> The other 2 lines are even harder to understand because they are
> actually macros that resolve to something different than what you
> actually see.
>
> But, you can think of them this way to understand them somewhat:
>
> + INTERNAL_METHOD(rexx_empty_queue)
>
> That line is something that provides the C++ compiler information it
> needs when it is compiling the source code.
>
> This line:
>
> +RexxMethod0(int, rexx_empty_queue)
>
> Is the start of the actual source code implementation.
>
> --
> Mark Miesfeld
>
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