#ifndef _SPHO_ERR_H
#define _SPHO_ERR_H

#include <errno.h>

#ifdef SPHO_DEBUG
#include <stdio.h>
#endif

#define SPHO_ERR_SYS		0x000001

#define SPHO_ERR_INTERNAL	0x010001
#define SPHO_ERR_TOOBIG		0x010002
#define SPHO_ERR_ARGINVAL	0x010003
#define SPHO_ERR_NAMEINUSE	0x010004

#define SPHO_ERR_IS_SYSERR(err)		(SPHO_ERR_SYS == err)

#ifdef SPHO_DEBUG

#define SPHO_ERR(ctx, e)						\
	do {								\
		(ctx)->err = (e);					\
		if ((e) == SPHO_ERR_SYS)				\
			(ctx)->err_info = errno;			\
		snprintf((ctx)->filebuf, sizeof((ctx)->filebuf),	\
		    __FILE__);						\
		(ctx)->errline = __LINE__;				\
	} while (0)

#else /* SPHO_DEBUG */

#define SPHO_ERR(ctx, e)						\
	do {								\
		(ctx)->err = (e);					\
		if ((e) == SPHO_ERR_SYS)				\
			(ctx)->err_info = errno;			\
	} while (0)

#endif /* SPHO_DEBUG */

/* debug stuff */
#ifdef SPHO_DEBUG

#define SPHO_STRINGIFY(a)	#a
#define SPHO_MACRO_STR(b)	SPHO_STRINGIFY(b)

#define __LINE__S		SPHO_MACRO_STR(__LINE__)

#define SPHO_PRECOND(cond) \
	do {								\
		if (! (cond) ) {					\
			fprintf(stderr, "SPHO_PRECOND(" #cond ")@"	\
			    __FILE__ ":" __LINE__S			\
			    " failed. Aborting.\n");			\
			abort();					\
		}							\
	} while (0)

#define SPHO_ASSERT(cond) \
	do {								\
		if (! (cond) ) {					\
			fprintf(stderr, "SPHO_ASSERT(" #cond ")@"	\
			    __FILE__ ":" __LINE__S			\
			    " failed. Aborting.\n");			\
			abort();					\
		}							\
	} while (0)

#define SPHO_POSTCOND(cond) \
	do {								\
		if (! (cond) ) {					\
			fprintf(stderr, "SPHO_POSTCOND(" #cond ")@"	\
			    __FILE__ ":" __LINE__S			\
			    " failed. Aborting.\n");			\
			abort();					\
		}							\
	} while (0)

#else
#define SPHO_PRECOND(cond)
#define SPHO_ASSERT(cond)
#define SPHO_POSTCOND(cond)
#endif

#endif