/* Copyright (C) 1994, 1995, 1999 Aladdin Enterprises.  All rights reserved.
  
  This software is provided AS-IS with no warranty, either express or
  implied.
  
  This software is distributed under license and may not be copied,
  modified or distributed except as expressly authorized under the terms
  of the license contained in the file LICENSE in this distribution.
  
  For more information about licensing, please refer to
  http://www.ghostscript.com/licensing/. For information on
  commercial licensing, go to http://www.artifex.com/licensing/ or
  contact Artifex Software, Inc., 101 Lucas Valley Road #110,
  San Rafael, CA  94903, U.S.A., +1(415)492-9861.
*/

/* $Id: istream.h,v 1.5 2002/06/16 04:47:10 lpd Exp $ */
/* Interpreter support procedures for streams */
/* Requires scommon.h */

#ifndef istream_INCLUDED
#  define istream_INCLUDED

/* Procedures exported by zfproc.c */

	/* for zfilter.c - procedure stream initialization */
int sread_proc(ref *, stream **, gs_ref_memory_t *);
int swrite_proc(ref *, stream **, gs_ref_memory_t *);

	/* for interp.c, zfileio.c, zpaint.c - handle a procedure */
	/* callback or an interrupt */
int s_handle_read_exception(i_ctx_t *, int, const ref *, const ref *,
			    int, op_proc_t);
int s_handle_write_exception(i_ctx_t *, int, const ref *, const ref *,
			     int, op_proc_t);

#endif /* istream_INCLUDED */