#ifndef _LSUP_CORE_H
#define _LSUP_CORE_H

#include <ctype.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <uuid/uuid.h>

#ifdef DEBUG
#define DEBUG_TEST 1
#else
#define DEBUG_TEST 0
#endif
#define STR "%s\n"
#define TRACE(fmt, ...) \
        do {\
            if (DEBUG_TEST) \
                fprintf(stderr, "%s:%d:%s(): " fmt "\n", \
                        __FILE__,  __LINE__, __func__, __VA_ARGS__); \
        } while (0)

#define LIKELY(x)       __builtin_expect(!!(x), true)
#define UNLIKELY(x)     __builtin_expect(!!(x), false)
// TODO Handle memory errors better.
#define CRITICAL(exp)   if (UNLIKELY(((exp) == NULL))) { abort(); }

#define KLEN sizeof(LSUP_Key)
#define DBL_KLEN sizeof(LSUP_DoubleKey)
#define TRP_KLEN sizeof(LSUP_TripleKey)
#define QUAD_KLEN sizeof(LSUP_QuadKey)

# define UUIDSTR_SIZE 37

// Handy flags operations.
#define SET_FLAG(n, f) ((n) |= (f))
#define CLR_FLAG(n, f) ((n) &= ~(f))
#define TGL_FLAG(n, f) ((n) ^= (f))
#define CHK_FLAG(n, f) ((n) & (f))



/* * * RETURN CODES * * */

/**
 * 0 is success, positive integers (>88800) are warnings, and negative integers
 * (<-88800) are errors.
 */
#define LSUP_OK             0

#define LSUP_NOACTION       88801
#define LSUP_NORESULT       88802
#define LSUP_END            88803

#define LSUP_ERROR          (-88801)
#define LSUP_PARSE_ERR      (-88802)
#define LSUP_VALUE_ERR      (-88803)


typedef size_t LSUP_Key;
typedef LSUP_Key LSUP_DoubleKey[2];
typedef LSUP_Key LSUP_TripleKey[3];
typedef LSUP_Key LSUP_QuadKey[4];

typedef char uuid_str_t[UUIDSTR_SIZE];

// Don't use MIN and MAX macros: see
// https://dustri.org/b/min-and-max-macro-considered-harmful.html
inline int min(int x, int y) { return x < y ? x : y; }

inline int max(int x, int y) { return x > y ? x : y; }

#endif