#ifndef CBOR_RUBY_BUFFER_H__
#define CBOR_RUBY_BUFFER_H__

/* The 8 major types */
#define MT_UNSIGNED 0
#define MT_NEGATIVE 1
#define MT_BYTES 2
#define MT_TEXT 3
#define MT_ARRAY 4
#define MT_MAP 5
#define MT_TAG 6
#define MT_PRIM 7

/* The initial bytes resulting from those */
#define IB_UNSIGNED (MT_UNSIGNED << 5)
#define IB_NEGATIVE (MT_NEGATIVE << 5)
#define IB_BYTES (MT_BYTES << 5)
#define IB_TEXT (MT_TEXT << 5)
#define IB_ARRAY (MT_ARRAY << 5)
#define IB_MAP (MT_MAP << 5)
#define IB_TAG (MT_TAG << 5)
#define IB_PRIM (MT_PRIM << 5)

#define IB_NEGFLAG (IB_NEGATIVE - IB_UNSIGNED)
#define IB_NEGFLAG_AS_BIT(ib) ((ib) >> 5)
#define IB_TEXTFLAG (IB_TEXT - IB_BYTES)

#define IB_AI(ib) ((ib) & 0x1F)
#define IB_MT(ib) ((ib) >> 5)

/* Tag numbers handled by this implementation */
#define TAG_TIME_EPOCH 1
#define TAG_BIGNUM 2
#define TAG_BIGNUM_NEG 3
#define TAG_URI 32
#define TAG_RE 35

/* Initial bytes of those tag numbers */
#define IB_TIME_EPOCH (IB_TAG + TAG_TIME_EPOCH)
#define IB_BIGNUM (IB_TAG + TAG_BIGNUM)
#define IB_BIGNUM_NEG (IB_TAG + TAG_BIGNUM_NEG)
/* TAG_URI and TAG_RE are non-immediate tags */

/* Simple values handled by this implementation */
#define VAL_NIL 22
#define VAL_FALSE 20
#define VAL_TRUE 21

/* Initial bytes of those simple values */
#define IB_NIL (IB_PRIM + VAL_NIL)
#define IB_FALSE (IB_PRIM + VAL_FALSE)
#define IB_TRUE (IB_PRIM + VAL_TRUE)

/* AI values with more data in head */
#define AI_1 24
#define AI_2 25
#define AI_4 26
#define AI_8 27
#define AI_INDEF 31
#define IB_BREAK (IB_PRIM + AI_INDEF)
/* For  */
#define IB_UNUSED (IB_TAG + AI_INDEF)

/* Floating point initial bytes */
#define IB_FLOAT2 (IB_PRIM + AI_2)
#define IB_FLOAT4 (IB_PRIM + AI_4)
#define IB_FLOAT8 (IB_PRIM + AI_8)

#endif