1 /* $OpenBSD: tables_shared.h,v 1.2 2015/11/19 22:16:43 tedu Exp $ */ 2 3 #ifdef FLEX_SCANNER 4 /* 5 dnl tables_shared.h - tables serialization header 6 dnl 7 dnl Copyright (c) 1990 The Regents of the University of California. 8 dnl All rights reserved. 9 dnl 10 dnl This code is derived from software contributed to Berkeley by 11 dnl Vern Paxson. 12 dnl 13 dnl The United States Government has rights in this work pursuant 14 dnl to contract no. DE-AC03-76SF00098 between the United States 15 dnl Department of Energy and the University of California. 16 dnl 17 dnl This file is part of flex. 18 dnl 19 dnl Redistribution and use in source and binary forms, with or without 20 dnl modification, are permitted provided that the following conditions 21 dnl are met: 22 dnl 23 dnl 1. Redistributions of source code must retain the above copyright 24 dnl notice, this list of conditions and the following disclaimer. 25 dnl 2. Redistributions in binary form must reproduce the above copyright 26 dnl notice, this list of conditions and the following disclaimer in the 27 dnl documentation and/or other materials provided with the distribution. 28 dnl 29 dnl Neither the name of the University nor the names of its contributors 30 dnl may be used to endorse or promote products derived from this software 31 dnl without specific prior written permission. 32 dnl 33 dnl THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 34 dnl IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 35 dnl WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 36 dnl PURPOSE. 37 38 dnl 39 dnl This file is meant to be included in both the skeleton and the actual 40 dnl flex code (hence the name "_shared"). 41 */ 42 #ifndef yyskel_static 43 #define yyskel_static static 44 #endif 45 #else 46 #ifndef yyskel_static 47 #define yyskel_static 48 #endif 49 #endif 50 51 /* Structures and prototypes for serializing flex tables. The 52 * binary format is documented in the manual. 53 * 54 * Design considerations: 55 * 56 * - The format allows many tables per file. 57 * - The tables can be streamed. 58 * - All data is stored in network byte order. 59 * - We do not hinder future unicode support. 60 * - We can lookup tables by name. 61 */ 62 63 /** Magic number for serialized format. */ 64 #ifndef YYTBL_MAGIC 65 #define YYTBL_MAGIC 0xF13C57B1 66 #endif 67 68 /** Calculate (0-7) = number bytes needed to pad n to next 64-bit boundary. */ 69 #ifndef yypad64 70 #define yypad64(n) ((8-((n)%8))%8) 71 #endif 72 73 74 #ifndef YYTABLES_TYPES 75 #define YYTABLES_TYPES 76 /** Possible values for td_id field. Each one corresponds to a 77 * scanner table of the same name. 78 */ 79 enum yytbl_id { 80 YYTD_ID_ACCEPT = 0x01, /**< 1-dim ints */ 81 YYTD_ID_BASE = 0x02, /**< 1-dim ints */ 82 YYTD_ID_CHK = 0x03, /**< 1-dim ints */ 83 YYTD_ID_DEF = 0x04, /**< 1-dim ints */ 84 YYTD_ID_EC = 0x05, /**< 1-dim ints */ 85 YYTD_ID_META = 0x06, /**< 1-dim ints */ 86 YYTD_ID_NUL_TRANS = 0x07, /**< 1-dim ints, maybe indices */ 87 YYTD_ID_NXT = 0x08, /**< may be 2 dimensional ints */ 88 YYTD_ID_RULE_CAN_MATCH_EOL = 0x09, /**< 1-dim ints */ 89 YYTD_ID_START_STATE_LIST = 0x0A, /**< 1-dim indices into trans tbl */ 90 YYTD_ID_TRANSITION = 0x0B, /**< structs */ 91 YYTD_ID_ACCLIST = 0x0C /**< 1-dim ints */ 92 }; 93 94 /** bit flags for t_flags field of struct yytbl_data */ 95 enum yytbl_flags { 96 /* These first three are mutually exclusive */ 97 YYTD_DATA8 = 0x01, /**< data is an array of type flex_int8_t */ 98 YYTD_DATA16 = 0x02, /**< data is an array of type flex_int16_t */ 99 YYTD_DATA32 = 0x04, /**< data is an array of type flex_int32_t */ 100 101 /* These two are mutually exclusive. */ 102 YYTD_PTRANS = 0x08, /**< data is a list of indexes of entries 103 into the expanded `yy_transition' 104 array. See notes in manual. */ 105 YYTD_STRUCT = 0x10 /**< data consists of yy_trans_info structs */ 106 }; 107 108 /* The serialized tables header. */ 109 struct yytbl_hdr { 110 flex_uint32_t th_magic; /**< Must be 0xF13C57B1 (comes from "Flex Table") */ 111 flex_uint32_t th_hsize; /**< Size of this header in bytes. */ 112 flex_uint32_t th_ssize; /**< Size of this dataset, in bytes, including header. */ 113 flex_uint16_t th_flags; /**< Currently unused, must be 0 */ 114 char *th_version; /**< Flex version string. NUL terminated. */ 115 char *th_name; /**< The name of this table set. NUL terminated. */ 116 }; 117 118 /** A single serialized table */ 119 struct yytbl_data { 120 flex_uint16_t td_id; /**< enum yytbl_id table identifier */ 121 flex_uint16_t td_flags; /**< how to interpret this data */ 122 flex_uint32_t td_hilen; /**< num elements in highest dimension array */ 123 flex_uint32_t td_lolen; /**< num elements in lowest dimension array */ 124 void *td_data; /**< table data */ 125 }; 126 #endif 127 128 /** Extract corresponding data size_t from td_flags */ 129 #ifndef YYTDFLAGS2BYTES 130 #define YYTDFLAGS2BYTES(td_flags)\ 131 (((td_flags) & YYTD_DATA8)\ 132 ? sizeof(flex_int8_t)\ 133 :(((td_flags) & YYTD_DATA16)\ 134 ? sizeof(flex_int16_t)\ 135 :sizeof(flex_int32_t))) 136 #endif 137 138 #ifdef FLEX_SCANNER 139 %not-for-header 140 #endif 141 yyskel_static flex_int32_t yytbl_calc_total_len (const struct yytbl_data *tbl); 142 #ifdef FLEX_SCANNER 143 %ok-for-header 144 #endif 145