#ifndef CBOR_PROTOCOL_H__
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#define CBOR_PROTOCOL_H__
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/* The 8 major types */
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#define MT_UNSIGNED 0
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#define MT_NEGATIVE 1
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#define MT_BYTES 2
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#define MT_TEXT 3
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#define MT_ARRAY 4
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#define MT_MAP 5
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#define MT_TAG 6
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#define MT_PRIM 7
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/* The initial bytes resulting from those */
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#define IB_UNSIGNED (MT_UNSIGNED << 5)
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#define IB_NEGATIVE (MT_NEGATIVE << 5)
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#define IB_BYTES (MT_BYTES << 5)
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#define IB_TEXT (MT_TEXT << 5)
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#define IB_ARRAY (MT_ARRAY << 5)
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#define IB_MAP (MT_MAP << 5)
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#define IB_TAG (MT_TAG << 5)
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#define IB_PRIM (MT_PRIM << 5)
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#define IB_NEGFLAG (IB_NEGATIVE - IB_UNSIGNED)
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#define IB_NEGFLAG_AS_BIT(ib) ((ib) >> 5)
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#define IB_TEXTFLAG (IB_TEXT - IB_BYTES)
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#define IB_AI(ib) ((ib) & 0x1F)
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#define IB_MT(ib) ((ib) >> 5)
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/* Tag numbers handled by this implementation */
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#define TAG_TIME_EPOCH 1
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#define TAG_BIGNUM 2
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#define TAG_BIGNUM_NEG 3
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#define TAG_URI 32
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#define TAG_RE 35
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/* Initial bytes of those tag numbers */
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#define IB_TIME_EPOCH (IB_TAG | TAG_TIME_EPOCH)
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#define IB_BIGNUM (IB_TAG | TAG_BIGNUM)
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#define IB_BIGNUM_NEG (IB_TAG | TAG_BIGNUM_NEG)
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/* TAG_URI and TAG_RE are non-immediate tags */
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/* Simple values handled by this implementation */
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#define VAL_FALSE 20
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#define VAL_TRUE 21
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#define VAL_NIL 22
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#define VAL_UNDEF 23
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/* Initial bytes of those simple values */
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#define IB_FALSE (IB_PRIM | VAL_FALSE)
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#define IB_TRUE (IB_PRIM | VAL_TRUE)
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#define IB_NIL (IB_PRIM | VAL_NIL)
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#define IB_UNDEF (IB_PRIM | VAL_UNDEF)
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/* AI values with more data in head */
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#define AI_1 24
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#define AI_2 25
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#define AI_4 26
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#define AI_8 27
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#define AI_INDEF 31
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#define IB_BREAK (IB_PRIM | AI_INDEF)
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/* For */
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#define IB_UNUSED (IB_TAG | AI_INDEF)
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/* Floating point initial bytes */
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#define IB_FLOAT2 (IB_PRIM | AI_2)
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#define IB_FLOAT4 (IB_PRIM | AI_4)
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#define IB_FLOAT8 (IB_PRIM | AI_8)
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// These definitions are here because they aren't required for the public
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// interface, and they were quite confusing in cn-cbor.h
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#ifdef USE_CBOR_CONTEXT
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/**
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* Allocate enough space for 1 `cn_cbor` structure.
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*
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* @param[in] ctx The allocation context, or NULL for calloc.
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* @return A pointer to a `cn_cbor` or NULL on failure
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*/
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#define CN_CALLOC(ctx) ((ctx) && (ctx)->calloc_func) ? \
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(ctx)->calloc_func(1, sizeof(cn_cbor), (ctx)->context) : \
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calloc(1, sizeof(cn_cbor));
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/**
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* Free a
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* @param free_func [description]
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* @return [description]
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*/
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#define CN_FREE(ptr, ctx) ((ctx) && (ctx)->free_func) ? \
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(ctx)->free_func((ptr), (ctx)->context) : \
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free((ptr));
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#define CBOR_CONTEXT_PARAM , context
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#define CN_CALLOC_CONTEXT() CN_CALLOC(context)
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#define CN_CBOR_FREE_CONTEXT(p) CN_FREE(p, context)
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#else
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#define CBOR_CONTEXT_PARAM
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#define CN_CALLOC_CONTEXT() CN_CALLOC
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#define CN_CBOR_FREE_CONTEXT(p) CN_FREE(p)
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#ifndef CN_CALLOC
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#define CN_CALLOC calloc(1, sizeof(cn_cbor))
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#endif
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#ifndef CN_FREE
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#define CN_FREE free
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#endif
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#endif // USE_CBOR_CONTEXT
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#ifndef UNUSED_PARAM
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#define UNUSED_PARAM(p) ((void)&(p))
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#endif
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#endif // CBOR_PROTOCOL_H__
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