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#ifndef _ENCDEC_H_

#define _ENCDEC_H_

#define swap32(x)                       \

        ((((x) & 0xff000000) >> 24) |   \

        (((x) & 0x00ff0000) >>  8) |    \

        (((x) & 0x0000ff00) <<  8) |    \

        (((x) & 0x000000ff) << 24))

uint32_t encode_object(uint32_t, uint32_t);

uint32_t decode_object(uint32_t, uint32_t, uint8_t *);

#define TYPE_NONE       0x0

#define TYPE_INT        0x1

#define TYPE_FLOAT      0x3

#define TYPE_CONS       0x4

#define TYPE_SNOC       0x5

#define TYPE_PTR        0x6

#define TYPE_ARRAY      0x7

#define TYPE_NIL        0x8

#define TYPE_T          0x9

#define TYPE_CHAR       0xA

#define TYPE_SYMBOL     0xB

#define TYPE_FUNCTION   0xC

#define TYPE_BUILTIN    0xD

#define SIZE_INT        26

#define BSIZE_INT       (SIZE_INT + 2)

#define SIZE_CHAR       8

#define BSIZE_CHAR      (SIZE_CHAR + 2)

// size and position of the parts of an object

#define OBJECT_DATUM_OFFSET 0

#define OBJECT_DATUM_MASK 0x3FFFFFF

#define OBJECT_TYPE_OFFSET 27

#define OBJECT_TYPE_MASK 0x1F

#define OBJECT_GC_OFFSET 26 

#define OBJECT_GC_MASK 0x1

#define OBJECT_NEW(type, datum)                                         \

        ((((uint32_t)(type)&OBJECT_TYPE_MASK) << OBJECT_TYPE_OFFSET) |  \

        ((datum)&OBJECT_DATUM_MASK))

#define OBJECT_TYPE(obj) \

        (((uint32_t)(obj)>>OBJECT_TYPE_OFFSET) & OBJECT_TYPE_MASK)

#define OBJECT_DATUM(obj) ((obj) & OBJECT_DATUM_MASK)

#define OBJECT_GC(obj) (((obj)>>OBJECT_GC_OFFSET)&OBJECT_GC_MASK)

#define DATA_SIZE_TYPE(type) ((type) == TYPE_CHAR) ? 1 : 4

// XXX: Change to DEVTYPE_BOOT || == DEVTYPE_STORAGE when we're ready

#define DATA_TYPE_DEV(dev) \

        (((dev) == DEVTYPE_BOOT) ? TYPE_NONE : TYPE_CHAR)

#endif /* _ENCDEC_H_ */