#ifndef PAC_UTILITY_H
#define PAC_UTILITY_H

typedef signed char             i8_t;
typedef signed short            i16_t;
typedef signed int              i32_t;
typedef signed long             i64_t;

typedef unsigned char           u8_t;
typedef unsigned short          u16_t;
typedef unsigned int            u32_t;
typedef unsigned long           u64_t;

typedef float                   f32_t;
typedef double                  f64_t;

typedef u32_t                   rune_t;
typedef u8_t                    bool_t;

#ifdef __PAC_32_BIT__
typedef u32_t                   usz_t;
typedef i32_t                   isz_t;
#else
typedef u64_t                   usz_t;
typedef i64_t                   isz_t;
#endif


#define TRUE  (1)
#define FALSE (0)

#define NULL ((void *) 0)



bool_t              pac_rune_is_lower_letter    (rune_t rune);
bool_t              pac_rune_is_upper_letter    (rune_t rune);
bool_t              pac_rune_is_letter          (rune_t rune);
bool_t              pac_rune_is_digit           (rune_t rune);
bool_t              pac_rune_is_blank           (rune_t rune);
bool_t              pac_rune_is_sign            (rune_t rune);



void                pac_memory_copy             (void *destination, void *source, usz_t length);
void                pac_memory_fill             (void *region, usz_t len_region, u8_t byte);
void                pac_memory_zero             (void *region, usz_t len_region);



typedef struct pac_arena             pac_arena_s;

struct pac_arena
{
    usz_t                   len_allocation;
    usz_t                   offset;
    void                   *allocation;
    pac_arena_s            *continuation;

};

pac_arena_s         pac_create_arena            (usz_t size);
void                pac_delete_arena            (pac_arena_s arena);

void                pac_free_arena              (pac_arena_s *arena);
pac_arena_s *       pac_new_arena               (usz_t size);

void *              pac_arena_alloc             (pac_arena_s *arena, usz_t length);

#endif // PAC_UTILITY_H