From: Pierre Brengard <pbrengard@...>
Date: 2002-06-07T17:13:59+09:00
Subject: Re: subclassing SWIG generated c++ class

maybe, the generated code lacks the call 'rb_obj_call_init' in the code
of the C functions that implement the 'new' Ruby method.


Pierre Brengard


Martin Man wrote:
> hi all,
> 
> I've created simle c++ class
> 
> --- class.cxx ---
> #if SWIG
> %module myext
> #endif
> 
> class Foo {
> 	Foo () {};
> 	hello_world () {};
> };
> 
> and then generated ruby extension module 'Myext' using SWIG for it... 
> no problem so far, I'm able to require the extension, 
> create instances of Foo, invoke methods, etc.
> 
> but when I try to subclass such class in ruby, the original class gets
> always created, am I missing something, e.g.
> 
> --- test.rb ---
> require './myext.so'
> 
> module Myext
> 	class Bar < Foo
> 	end
> end
> 
> k = Myext::Foo.new
> puts k
> k1 = Myext::Bar.new
> puts k1
> 
> 
> both .new statements create instance of Myext::Foo...
> 
> ruby 1.6.7 (2002-03-19) [i386-linux]
> swig 1.3.11
> 
> I'm now trying the cvs versions of SWIG and ruby, but if anyone knows what's
> happening...
> 
> greets,
> martin
>