Re: [Opencxx-users] Environment::Lookup Question/Problem

[Grzegorz J. <ja...@ac...>]

Hi,

sdflemin wrote:
> 
> Hi,
> I have been using OpenC++ for about a year now, and recently ran into a 
> problem. I am doing member call translations (using 
> MemberCallTranslate), and I need to know if the member function that the 
> call is being made on returns void. I find that when the call is made 
> outside the member's class, the Environment does not contain the member 
> function's symbol. A stripped-down sample that illustrates the problem 
> follows.

I don't have much time to look into it now, but it seems to me that you 
are looking in wrong environment. Given

     C x;
     x->f();

you should be looking for 'f()' in environment of class C, not in the 
environment of the call site.

Given the fact that you are in a metaclass of C, you should be able to 
get hold on the right environment by calling 'this->GetEnvironment()'.

Let me know if this does not work, I will have a deeper look.

> I have used the Environment::Dump function before the Lookup to help 
> debug this, and sure enough, none of the Foo member functions appear in 
> the dump. The Foo class does, however...

Seems right.

> My question to you: is this behavior a feature that I don't understand 
> or a bug?
> 
> If it's a feature, can you suggest a way for me to determine the return 
> type of foo_do_it() in the TranslateMemberCall() function?
> 
> If it's a bug, can you suggest a patch? I am happy to patch the OpenC++ 
> source myself, but it will take me awhile to understand it. 

It seems that no patch is needed here, but if you would consider 
contributing your work to OpenC++ there are always bigger and smaller 
jobs to do in OpenC++, OpenC++Core or OpenC++ website, just contact me 
for arrangements.

> Any pointers 
> you can give me would be great, and also, is there a document that 
> describes the OpenC++ source design?

See opencxx/doc/architecture.html in CVS.

BR
Grzegorz



> Many Thanks, Scott
> 
> PS: My thanks to the OpenC++ maintainers. It has been an extremely 
> useful tool for me, and I am glad that the project is alive and well.
> 
> 
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