/* Copyright (C) 1994, 1995, 1999 Aladdin Enterprises.  All rights reserved.
  
  This file is part of AFPL Ghostscript.
  
  AFPL Ghostscript is distributed with NO WARRANTY OF ANY KIND.  No author or
  distributor accepts any responsibility for the consequences of using it, or
  for whether it serves any particular purpose or works at all, unless he or
  she says so in writing.  Refer to the Aladdin Free Public License (the
  "License") for full details.
  
  Every copy of AFPL Ghostscript must include a copy of the License, normally
  in a plain ASCII text file named PUBLIC.  The License grants you the right
  to copy, modify and redistribute AFPL Ghostscript, but only under certain
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*/

/*$Id: istream.h,v 1.2 2000/09/19 19:00:46 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(P3(ref *, stream **, gs_ref_memory_t *));
int swrite_proc(P3(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(P6(i_ctx_t *, int, const ref *, const ref *,
			       int, op_proc_t));
int s_handle_write_exception(P6(i_ctx_t *, int, const ref *, const ref *,
				int, op_proc_t));

#endif /* istream_INCLUDED */
