/* This file is part of GNU epsilon, a functional language implementation

Copyright (C) 2003 Luca Saiu

GNU epsilon is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 2, or (at your
option) any later version.

GNU epsilon is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with epsilon; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */


/* Code for the s_filerc instruction */

char c;

/* Read a character from the FILE* on the top and place it into
   the I/O register: */
if(fread(&c, sizeof(char), 1, (FILE*)top) != 1){
  /* an error occourred. */
  if(feof((FILE*)top)){
    THROW(end_of_stream_exception, NULL);
  }
  else{ /* To do: look at errno */
    fprintf(stderr, "s_filerc: look at errno %i\n", errno);
    THROW(unimplemented_exception, NULL);
  }
}
output_register = (word_t)(integer_t)c;

/* remove the FILE* from the stack: */
POP; 
