From: "Iñaki Baz Castillo" <ibc@...>
Date: 2012-05-02T18:53:01+09:00
Subject: Re: rb_errinfo() "captures" more than exceptions, but also Interrupt and SystemExit

2012/5/2 Iñaki Baz Castillo <ibc@aliax.net>:
> So I just need to check whether the VALUE object returned by
> rb_errinfo() inherits from rb_eStandardError. Am I right? Thanks a
> lot.

Hi, I got it at 80%, just a single issue remains. This is the code
that tries to "imitate" the classic "begin-rescue-end" at C level:


  rb_protect(my_wrapper_rb_funcall_0, block, &exception);

  if (exception)  {
    // rb_errinfo() gives the current exception object in this thread.
    VALUE exception = rb_errinfo();

    if (rb_obj_is_kind_of(exception, rb_eStandardError) == Qtrue) {
      rb_funcall(mMyModule, rb_intern("manage_exception", 1, exception);
      // Dissable the current thread exception.
      rb_set_errinfo(Qnil);
    }
    else {
      // TODO: It's not a public Ruby function !!!
      //rb_f_raise(0, NULL);
    }
  }


The only I need is to find how to raise the produced exception when
it's not a StandardError. In ruby land I just need to call "raise"
(with no arguments). In C land, rb_f_raise() is the C function used by
"raise", but it's not public !!

So what is the alternative? Note that exception variable holds the
exception instance, not a class, so I cannot use rb_raise.


Thanks a lot.


-- 
Iñaki Baz Castillo
<ibc@aliax.net>