From: ts <decoux@...>
Date: 2001-06-21T21:04:17+09:00
Subject: [ruby-talk:16698] Re: how to call super from singleton method?


 [[ Do the news<=>mail gateway insert "undisclosed-recipients: ;" in the To:
 field ? It give me errors. ]]

>>>>> "A" == Andi Riedl <viisi@chello.at> writes:

A> ruby:0:in inspect': superclass method inspect' must be enabled by
A> rb_enable_super() (NameError)
A> 		  from ruby:0
		  
 Well, you have the bad solution to use rb_enable_super(). Probably the
 best is to call rb_alias() and then call the new function, i.e.

pigeon% cat tt.c
#include <stdio.h>
#include <ruby.h>

VALUE myInspect (VALUE self)
{
  printf ("myInspect\n");
  return rb_funcall(self, rb_intern("inspect_old"), 0);
}

int main()
{
  VALUE x,y;
  
  ruby_init();

  x = rb_hash_new();
  rb_alias(CLASS_OF(x), rb_intern("inspect_old"), rb_intern("inspect"));
  rb_define_singleton_method(x, "inspect", myInspect, 0);

  /* call now: */
  y = rb_funcall(x,rb_intern("inspect"),0);
  printf ("%s\n",STR2CSTR(y));
  
  return 0;
}
pigeon% 

pigeon% tt
myInspect
{}
pigeon% 


Guy Decoux