#ifndef	h_LAYER
#define	h_LAYER
/******************************************************************************
*
*	Definition of the error layer trapping structure
*
*	Module	%M%	Version	%I% 	Date	%H%
*
*	(c) Copyright 1998 Ardent Software Inc. - All Rights Reserved
*	This is unpublished proprietary source code of Ardent Software Inc.
*	The copyright notice above does not evidence any actual or intented
*	publication of such source code.
*
*******************************************************************************
*
*	Maintenence log - insert most recent change descriptions at top
*
*	Date.... GTAR# WHO Description.........................................
*	10/14/98 23801 SAP Change copyrights. 
*	06/06/96 18582 CSM Added L_TRIGCASC
*	10/25/94 15040 PVW Added L_TX
*	11/09/92 9899  JKW added auth_id to layer struct
*	08/26/91 8583  DTM Added L_CLIENT and L_DEFAULT for Xuv
*	08/09/91 8583  DTM Added L_RAID for use with Xuv
*	07/25/88   -    -  Maintenence log purged at 5.2.1, see release 5.1.10.
*
*****************************************************************************/

#include	SETJMP_H

#define	L_CL	0	/* Command Language	*/
#define	L_PA	1	/* Paragraph		*/
#define	L_MENU	2	/* Menu			*/
#define	L_VERB	3	/* Verb			*/
#define	L_PROC	4	/* Proc			*/
#define	L_TAPE	5	/* Tape			*/
#define	L_QUERY	6	/* Query		*/
#define	L_BASIC	7	/* BASIC run machine	*/
#define	L_EXEC	8	/* Execute		*/
#define	L_PERF	9	/* Perform		*/
#define	L_FEW	10	/* Fork, exec & wait	*/
#define	L_RAID  11  /* Raid debugger level */
#define L_CLIENT 12 /* XApp mode */
#define L_DEFAULT 3 /* Default layer */
#define	L_TX	13	/* Transaction layer	*/
#define L_TRIGCASC 14	/* Trigger/Cascade layer */

union	lsave
{
	PQ	*pq;			/* Data for the PROC machine	*/
	PSAVE	*psave;			/* Data for PARAGRAPHS		*/
	RUNDATA	*rundata;		/* Data for run-machine		*/
	LEVEL	*level;			/* Data for EXECUTE		*/
};
	
struct	layer_env
{
	LAYER	*next;			/* Forward link			*/
	int	type;			/* Type of layer		*/
	LSAVE	save;			/* State save			*/
	jmp_buf	env;			/* Error recovery point		*/
	int	(*warning)();		/* Warning message routine	*/
	int	(*fatal)();		/* Fatal message routine	*/
	long	timestamp;
	int auth_id;
};

EXTERN	LAYER	*top_layer;
EXTERN	char	*layer_name[];

EXTERN	void	layer_setup(),
		layer_reset();
#endif	/* end of LAYER.h */