#ifndef __OBJ_H__
#define __OBJ_H__

#include <stdio.h>
#include <stdlib.h>

/* obj.h: objecty and exceptiony stuff
 *
 * Some macros to make C a bit more like C++, but without bringing in
 * all of C++'s crapola.
 */

/* Here's an example:
 *
 * int
 * foo()
 * {
 *   struct bar *b = NULL;
 *   FILE       *f = NULL;
 *
 *   attempt {
 *     b = new(struct bar);
 *     if (! b) fail;
 *
 *     f = fopen("foo", "r");
 *     if (! f) fail;
 *
 *     (void)fgets(b->baz, 10, f);
 *   }
 *
 *   if (f) {
 *     (void)fclose(f);
 *   }
 *
 *   recover {
 *     if (b) {
 *       free(b);
 *     }
 *     return -1;
 *   }
 *
 *   return 0;
 * }
 */

/** Exception-type things
 *
 * These allow you to have pseudo-exceptions.  It looks kludgy and it
 * is, but it's only that way so you can have nice pretty code.
 */
static int __obj_passed = 0;
#define attempt for (__obj_passed = 0; !__obj_passed; __obj_passed = 1)
#define fail break
#define succeed continue
#define recover if (__obj_passed ? (__obj_passed = 0) : 1)

#define new(type) (type *)calloc(1, sizeof(type))



/* Some things I use for debugging */
#ifdef NODUMP
#  define DUMPf(fmt, args...)
#else
#  define DUMPf(fmt, args...) fprintf(stderr, "%s:%s:%d " fmt "\n", __FILE__, __FUNCTION__, __LINE__, ##args)
#endif
#define DUMP() DUMPf("")
#define DUMP_d(v) DUMPf("%s = %d", #v, v)
#define DUMP_x(v) DUMPf("%s = 0x%x", #v, v)
#define DUMP_s(v) DUMPf("%s = %s", #v, v)
#define DUMP_c(v) DUMPf("%s = '%c' (0x%02x)", #v, v, v)
#define DUMP_p(v) DUMPf("%s = %p", #v, v)

#endif