From: Michael Neumann <mneumann@...>
Date: 2007-09-22T18:34:25+09:00
Subject: Re: CplusRuby - Gluing C and Ruby

Konrad Meyer schrieb:
> Quoth Konrad Meyer:
> Okay, so I have added the following to DEFAULT_OPTIONS:
> 
>     :int => {
>       :default => '0',
>       :ctype => 'int %s',
>       :ruby2c => '(int)NUM2INT(%s)',
>       :c2ruby => 'INT2NUM(%s)'},
> 
>     :char_p => {
>       :default => '""',
>       :ctype => 'char *%s',
>       :ruby2c => 'StringValuePtr(%s)',
>       :c2ruby => 'rb_str_new2(%s)'} 
> 
> My code is like this:
> 
> #---------------------start
> 
> require 'cplusruby'
> 
> class BankAccount < CplusRuby
>   property :balance,  :int
>   property :name,     :char_p
> 
>   method_c :withdraw, %{int dollars}, %{
>     if (dollars <= selfc->balance){
>       selfc->balance -= dollars;
>       return true;
>     }
>   }
> 
>   def initialize
>   end
> end
> 
> CplusRuby.evaluate("foo.c", "-Os", "")
> 
> n = BankAccount.new
> puts n.balance
> puts n.name


I've applied your patch. Plus, generating C code is now possible. The 
example above should now just work. Alternatively "foo.cc" :)

Regards,

   Michael