147 lines
5.1 KiB
C
147 lines
5.1 KiB
C
/* $NetBSD: tables_shared.h,v 1.1.1.1 2009/10/26 00:27:05 christos Exp $ */
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#ifdef FLEX_SCANNER
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/*
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dnl tables_shared.h - tables serialization header
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dnl
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dnl Copyright (c) 1990 The Regents of the University of California.
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dnl All rights reserved.
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dnl
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dnl This code is derived from software contributed to Berkeley by
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dnl Vern Paxson.
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dnl
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dnl The United States Government has rights in this work pursuant
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dnl to contract no. DE-AC03-76SF00098 between the United States
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dnl Department of Energy and the University of California.
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dnl
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dnl This file is part of flex.
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dnl
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dnl Redistribution and use in source and binary forms, with or without
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dnl modification, are permitted provided that the following conditions
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dnl are met:
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dnl
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dnl 1. Redistributions of source code must retain the above copyright
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dnl notice, this list of conditions and the following disclaimer.
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dnl 2. Redistributions in binary form must reproduce the above copyright
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dnl notice, this list of conditions and the following disclaimer in the
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dnl documentation and/or other materials provided with the distribution.
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dnl
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dnl Neither the name of the University nor the names of its contributors
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dnl may be used to endorse or promote products derived from this software
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dnl without specific prior written permission.
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dnl
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dnl THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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dnl IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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dnl WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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dnl PURPOSE.
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dnl
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dnl This file is meant to be included in both the skeleton and the actual
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dnl flex code (hence the name "_shared").
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*/
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#ifndef yyskel_static
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#define yyskel_static static
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#endif
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#else
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#ifndef yyskel_static
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#define yyskel_static
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#endif
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#endif
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/* Structures and prototypes for serializing flex tables. The
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* binary format is documented in the manual.
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*
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* Design considerations:
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*
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* - The format allows many tables per file.
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* - The tables can be streamed.
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* - All data is stored in network byte order.
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* - We do not hinder future unicode support.
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* - We can lookup tables by name.
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*/
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/** Magic number for serialized format. */
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#ifndef YYTBL_MAGIC
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#define YYTBL_MAGIC 0xF13C57B1
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#endif
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/** Calculate (0-7) = number bytes needed to pad n to next 64-bit boundary. */
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#ifndef yypad64
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#define yypad64(n) ((8-((n)%8))%8)
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#endif
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#ifndef YYTABLES_TYPES
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#define YYTABLES_TYPES
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/** Possible values for td_id field. Each one corresponds to a
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* scanner table of the same name.
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*/
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enum yytbl_id {
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YYTD_ID_ACCEPT = 0x01, /**< 1-dim ints */
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YYTD_ID_BASE = 0x02, /**< 1-dim ints */
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YYTD_ID_CHK = 0x03, /**< 1-dim ints */
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YYTD_ID_DEF = 0x04, /**< 1-dim ints */
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YYTD_ID_EC = 0x05, /**< 1-dim ints */
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YYTD_ID_META = 0x06, /**< 1-dim ints */
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YYTD_ID_NUL_TRANS = 0x07, /**< 1-dim ints, maybe indices */
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YYTD_ID_NXT = 0x08, /**< may be 2 dimensional ints */
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YYTD_ID_RULE_CAN_MATCH_EOL = 0x09, /**< 1-dim ints */
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YYTD_ID_START_STATE_LIST = 0x0A, /**< 1-dim indices into trans tbl */
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YYTD_ID_TRANSITION = 0x0B, /**< structs */
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YYTD_ID_ACCLIST = 0x0C /**< 1-dim ints */
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};
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/** bit flags for t_flags field of struct yytbl_data */
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enum yytbl_flags {
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/* These first three are mutually exclusive */
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YYTD_DATA8 = 0x01, /**< data is an array of type flex_int8_t */
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YYTD_DATA16 = 0x02, /**< data is an array of type flex_int16_t */
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YYTD_DATA32 = 0x04, /**< data is an array of type flex_int32_t */
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/* These two are mutually exclusive. */
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YYTD_PTRANS = 0x08, /**< data is a list of indexes of entries
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into the expanded `yy_transition'
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array. See notes in manual. */
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YYTD_STRUCT = 0x10 /**< data consists of yy_trans_info structs */
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};
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/* The serialized tables header. */
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struct yytbl_hdr {
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flex_uint32_t th_magic; /**< Must be 0xF13C57B1 (comes from "Flex Table") */
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flex_uint32_t th_hsize; /**< Size of this header in bytes. */
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flex_uint32_t th_ssize; /**< Size of this dataset, in bytes, including header. */
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flex_uint16_t th_flags; /**< Currently unused, must be 0 */
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char *th_version; /**< Flex version string. NUL terminated. */
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char *th_name; /**< The name of this table set. NUL terminated. */
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};
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/** A single serialized table */
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struct yytbl_data {
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flex_uint16_t td_id; /**< enum yytbl_id table identifier */
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flex_uint16_t td_flags; /**< how to interpret this data */
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flex_uint32_t td_hilen; /**< num elements in highest dimension array */
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flex_uint32_t td_lolen; /**< num elements in lowest dimension array */
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void *td_data; /**< table data */
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};
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#endif
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/** Extract corresponding data size_t from td_flags */
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#ifndef YYTDFLAGS2BYTES
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#define YYTDFLAGS2BYTES(td_flags)\
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(((td_flags) & YYTD_DATA8)\
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? sizeof(flex_int8_t)\
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:(((td_flags) & YYTD_DATA16)\
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? sizeof(flex_int16_t)\
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:sizeof(flex_int32_t)))
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#endif
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#ifdef FLEX_SCANNER
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%not-for-header
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#endif
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yyskel_static flex_int32_t yytbl_calc_total_len (const struct yytbl_data *tbl);
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#ifdef FLEX_SCANNER
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%ok-for-header
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#endif
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/* vim:set noexpandtab cindent tabstop=8 softtabstop=0 shiftwidth=8 textwidth=0: */
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