From: Wesley J Landaker <wjl@...>
Date: 2003-06-09T06:25:59+09:00
Subject: passing a block from C to Ruby -- revisited. ;)

Hi folks,

I'm trying to figure out how to call a ruby method from C while passing 
in a block. I read the ruby-talk [27774] thread from way back; it was 
sort of useful, but it wasn't clear when I read that how it applies to 
what I want to do: I have no problem getting and using a block passed 
into a C extension FROM ruby; going the other way seems a little more 
arcane--rb_iterate doesn't seem to do what I want, but maybe somebody 
can convince me otherwise. ;)

Basically, I have:

VALUE obj = ... some ruby object ...;
VALUE proc = ... some ruby proc object ...;
ID method = ... some ruby method id ...;

Now, I just want to do the equivelent of:
obj.method(&proc) 

Something like this imaginary function:
rb_funcall2_with_block(obj, method, 0, 0, proc);

-- 
Wesley J. Landaker - wjl@icecavern.net
OpenPGP FP: C99E DF40 54F6 B625 FD48  B509 A3DE 8D79 541F F830