[webkit-efl] Use of pimpl idiom for Ewk classes

Kangil Han kangil.han at samsung.com
Fri Oct 19 01:49:52 PDT 2012

Hi Chris,
FOA, thank you, of course including Mikhail, for the constructive
discussion. :)
My two cents heads to https://bugs.webkit.org/attachment.cgi?id=169425
No macro and so pretty!
Kind regards,
From: webkit-efl-bounces at lists.webkit.org
[mailto:webkit-efl-bounces at lists.webkit.org] On Behalf Of Dumez, Christophe
Sent: Friday, October 19, 2012 1:28 AM
To: Thiago Marcos P. Santos
Cc: webkit-efl at lists.webkit.org; Kenneth R Christiansen
Subject: Re: [webkit-efl] Use of pimpl idiom for Ewk classes

I have updated the Ewk_Download class based on the alternative mentioned by
Thiago and updated a patch here for comparison:
(pimpl patch is still at https://bugs.webkit.org/attachment.cgi?id=169402

One possible issue that I noticed with this approach is that we need to use
"const char*" instead of "String" type in our C++ methods API due to Eina
string sharing. This is a bit unfortunate since C++ code uses String type in

As I said in my previous email, we also need to write a lot more C++ methods
than with the pimpl approach. It will be a lot more work to refactor all Ewk
This approach however has the benefit of being of simpler design (no macros,
C++ methods can access members directly without dereferencing a pointer).

I'm personally open to both approaches so I'd like to hear others' opinion.

Christophe Dumez
Linux Software Engineer, PhD
Intel Finland Oy - Open Source Technology Center
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