1 #ifndef CBOR_PROTOCOL_H__ 2 #define CBOR_PROTOCOL_H__ 3 4 /* The 8 major types */ 5 #define MT_UNSIGNED 0 6 #define MT_NEGATIVE 1 7 #define MT_BYTES 2 8 #define MT_TEXT 3 9 #define MT_ARRAY 4 10 #define MT_MAP 5 11 #define MT_TAG 6 12 #define MT_PRIM 7 13 14 /* The initial bytes resulting from those */ 15 #define IB_UNSIGNED (MT_UNSIGNED << 5) 16 #define IB_NEGATIVE (MT_NEGATIVE << 5) 17 #define IB_BYTES (MT_BYTES << 5) 18 #define IB_TEXT (MT_TEXT << 5) 19 #define IB_ARRAY (MT_ARRAY << 5) 20 #define IB_MAP (MT_MAP << 5) 21 #define IB_TAG (MT_TAG << 5) 22 #define IB_PRIM (MT_PRIM << 5) 23 24 #define IB_NEGFLAG (IB_NEGATIVE - IB_UNSIGNED) 25 #define IB_NEGFLAG_AS_BIT(ib) ((ib) >> 5) 26 #define IB_TEXTFLAG (IB_TEXT - IB_BYTES) 27 28 #define IB_AI(ib) ((ib) & 0x1F) 29 #define IB_MT(ib) ((ib) >> 5) 30 31 /* Tag numbers handled by this implementation */ 32 #define TAG_TIME_EPOCH 1 33 #define TAG_BIGNUM 2 34 #define TAG_BIGNUM_NEG 3 35 #define TAG_URI 32 36 #define TAG_RE 35 37 38 /* Initial bytes of those tag numbers */ 39 #define IB_TIME_EPOCH (IB_TAG | TAG_TIME_EPOCH) 40 #define IB_BIGNUM (IB_TAG | TAG_BIGNUM) 41 #define IB_BIGNUM_NEG (IB_TAG | TAG_BIGNUM_NEG) 42 /* TAG_URI and TAG_RE are non-immediate tags */ 43 44 /* Simple values handled by this implementation */ 45 #define VAL_FALSE 20 46 #define VAL_TRUE 21 47 #define VAL_NIL 22 48 #define VAL_UNDEF 23 49 50 /* Initial bytes of those simple values */ 51 #define IB_FALSE (IB_PRIM | VAL_FALSE) 52 #define IB_TRUE (IB_PRIM | VAL_TRUE) 53 #define IB_NIL (IB_PRIM | VAL_NIL) 54 #define IB_UNDEF (IB_PRIM | VAL_UNDEF) 55 56 /* AI values with more data in head */ 57 #define AI_1 24 58 #define AI_2 25 59 #define AI_4 26 60 #define AI_8 27 61 #define AI_INDEF 31 62 #define IB_BREAK (IB_PRIM | AI_INDEF) 63 /* For */ 64 #define IB_UNUSED (IB_TAG | AI_INDEF) 65 66 /* Floating point initial bytes */ 67 #define IB_FLOAT2 (IB_PRIM | AI_2) 68 #define IB_FLOAT4 (IB_PRIM | AI_4) 69 #define IB_FLOAT8 (IB_PRIM | AI_8) 70 71 // These definitions are here because they aren't required for the public 72 // interface, and they were quite confusing in cn-cbor.h 73 74 #ifdef USE_CBOR_CONTEXT 75 /** 76 * Allocate enough space for 1 `cn_cbor` structure. 77 * 78 * @param[in] ctx The allocation context, or NULL for calloc. 79 * @return A pointer to a `cn_cbor` or NULL on failure 80 */ 81 #define CN_CALLOC(ctx) ((ctx) && (ctx)->calloc_func) ? \ 82 (ctx)->calloc_func(1, sizeof(cn_cbor), (ctx)->context) : \ 83 calloc(1, sizeof(cn_cbor)); 84 85 /** 86 * Free a 87 * @param free_func [description] 88 * @return [description] 89 */ 90 #define CN_FREE(ptr, ctx) ((ctx) && (ctx)->free_func) ? \ 91 (ctx)->free_func((ptr), (ctx)->context) : \ 92 free((ptr)); 93 94 #define CBOR_CONTEXT_PARAM , context 95 #define CN_CALLOC_CONTEXT() CN_CALLOC(context) 96 #define CN_CBOR_FREE_CONTEXT(p) CN_FREE(p, context) 97 98 #else 99 100 #define CBOR_CONTEXT_PARAM 101 #define CN_CALLOC_CONTEXT() CN_CALLOC 102 #define CN_CBOR_FREE_CONTEXT(p) CN_FREE(p) 103 104 #ifndef CN_CALLOC 105 #define CN_CALLOC calloc(1, sizeof(cn_cbor)) 106 #endif 107 108 #ifndef CN_FREE 109 #define CN_FREE free 110 #endif 111 112 #endif // USE_CBOR_CONTEXT 113 114 #ifndef UNUSED_PARAM 115 #define UNUSED_PARAM(p) ((void)&(p)) 116 #endif 117 118 #endif // CBOR_PROTOCOL_H__ 119
