mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-25 11:37:56 +00:00
145 lines
5.0 KiB
C
145 lines
5.0 KiB
C
#ifdef FLEX_SCANNER
|
||
/*
|
||
dnl tables_shared.h - tables serialization header
|
||
dnl
|
||
dnl Copyright (c) 1990 The Regents of the University of California.
|
||
dnl All rights reserved.
|
||
dnl
|
||
dnl This code is derived from software contributed to Berkeley by
|
||
dnl Vern Paxson.
|
||
dnl
|
||
dnl The United States Government has rights in this work pursuant
|
||
dnl to contract no. DE-AC03-76SF00098 between the United States
|
||
dnl Department of Energy and the University of California.
|
||
dnl
|
||
dnl This file is part of flex.
|
||
dnl
|
||
dnl Redistribution and use in source and binary forms, with or without
|
||
dnl modification, are permitted provided that the following conditions
|
||
dnl are met:
|
||
dnl
|
||
dnl 1. Redistributions of source code must retain the above copyright
|
||
dnl notice, this list of conditions and the following disclaimer.
|
||
dnl 2. Redistributions in binary form must reproduce the above copyright
|
||
dnl notice, this list of conditions and the following disclaimer in the
|
||
dnl documentation and/or other materials provided with the distribution.
|
||
dnl
|
||
dnl Neither the name of the University nor the names of its contributors
|
||
dnl may be used to endorse or promote products derived from this software
|
||
dnl without specific prior written permission.
|
||
dnl
|
||
dnl THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
|
||
dnl IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
|
||
dnl WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||
dnl PURPOSE.
|
||
|
||
dnl
|
||
dnl This file is meant to be included in both the skeleton and the actual
|
||
dnl flex code (hence the name "_shared").
|
||
*/
|
||
#ifndef yyskel_static
|
||
#define yyskel_static static
|
||
#endif
|
||
#else
|
||
#ifndef yyskel_static
|
||
#define yyskel_static
|
||
#endif
|
||
#endif
|
||
|
||
/* Structures and prototypes for serializing flex tables. The
|
||
* binary format is documented in the manual.
|
||
*
|
||
* Design considerations:
|
||
*
|
||
* - The format allows many tables per file.
|
||
* - The tables can be streamed.
|
||
* - All data is stored in network byte order.
|
||
* - We do not hinder future unicode support.
|
||
* - We can lookup tables by name.
|
||
*/
|
||
|
||
/** Magic number for serialized format. */
|
||
#ifndef YYTBL_MAGIC
|
||
#define YYTBL_MAGIC 0xF13C57B1
|
||
#endif
|
||
|
||
/** Calculate (0-7) = number bytes needed to pad n to next 64-bit boundary. */
|
||
#ifndef yypad64
|
||
#define yypad64(n) ((8-((n)%8))%8)
|
||
#endif
|
||
|
||
|
||
#ifndef YYTABLES_TYPES
|
||
#define YYTABLES_TYPES
|
||
/** Possible values for td_id field. Each one corresponds to a
|
||
* scanner table of the same name.
|
||
*/
|
||
enum yytbl_id {
|
||
YYTD_ID_ACCEPT = 0x01, /**< 1-dim ints */
|
||
YYTD_ID_BASE = 0x02, /**< 1-dim ints */
|
||
YYTD_ID_CHK = 0x03, /**< 1-dim ints */
|
||
YYTD_ID_DEF = 0x04, /**< 1-dim ints */
|
||
YYTD_ID_EC = 0x05, /**< 1-dim ints */
|
||
YYTD_ID_META = 0x06, /**< 1-dim ints */
|
||
YYTD_ID_NUL_TRANS = 0x07, /**< 1-dim ints, maybe indices */
|
||
YYTD_ID_NXT = 0x08, /**< may be 2 dimensional ints */
|
||
YYTD_ID_RULE_CAN_MATCH_EOL = 0x09, /**< 1-dim ints */
|
||
YYTD_ID_START_STATE_LIST = 0x0A, /**< 1-dim indices into trans tbl */
|
||
YYTD_ID_TRANSITION = 0x0B, /**< structs */
|
||
YYTD_ID_ACCLIST = 0x0C /**< 1-dim ints */
|
||
};
|
||
|
||
/** bit flags for t_flags field of struct yytbl_data */
|
||
enum yytbl_flags {
|
||
/* These first three are mutually exclusive */
|
||
YYTD_DATA8 = 0x01, /**< data is an array of type flex_int8_t */
|
||
YYTD_DATA16 = 0x02, /**< data is an array of type flex_int16_t */
|
||
YYTD_DATA32 = 0x04, /**< data is an array of type flex_int32_t */
|
||
|
||
/* These two are mutually exclusive. */
|
||
YYTD_PTRANS = 0x08, /**< data is a list of indexes of entries
|
||
into the expanded `yy_transition'
|
||
array. See notes in manual. */
|
||
YYTD_STRUCT = 0x10 /**< data consists of yy_trans_info structs */
|
||
};
|
||
|
||
/* The serialized tables header. */
|
||
struct yytbl_hdr {
|
||
flex_uint32_t th_magic; /**< Must be 0xF13C57B1 (comes from "Flex Table") */
|
||
flex_uint32_t th_hsize; /**< Size of this header in bytes. */
|
||
flex_uint32_t th_ssize; /**< Size of this dataset, in bytes, including header. */
|
||
flex_uint16_t th_flags; /**< Currently unused, must be 0 */
|
||
char *th_version; /**< Flex version string. NUL terminated. */
|
||
char *th_name; /**< The name of this table set. NUL terminated. */
|
||
};
|
||
|
||
/** A single serialized table */
|
||
struct yytbl_data {
|
||
flex_uint16_t td_id; /**< enum yytbl_id table identifier */
|
||
flex_uint16_t td_flags; /**< how to interpret this data */
|
||
flex_uint32_t td_hilen; /**< num elements in highest dimension array */
|
||
flex_uint32_t td_lolen; /**< num elements in lowest dimension array */
|
||
void *td_data; /**< table data */
|
||
};
|
||
#endif
|
||
|
||
/** Extract corresponding data size_t from td_flags */
|
||
#ifndef YYTDFLAGS2BYTES
|
||
#define YYTDFLAGS2BYTES(td_flags)\
|
||
(((td_flags) & YYTD_DATA8)\
|
||
? sizeof(flex_int8_t)\
|
||
:(((td_flags) & YYTD_DATA16)\
|
||
? sizeof(flex_int16_t)\
|
||
:sizeof(flex_int32_t)))
|
||
#endif
|
||
|
||
#ifdef FLEX_SCANNER
|
||
%not-for-header
|
||
#endif
|
||
yyskel_static flex_int32_t yytbl_calc_total_len (const struct yytbl_data *tbl);
|
||
#ifdef FLEX_SCANNER
|
||
%ok-for-header
|
||
#endif
|
||
|
||
/* vim:set noexpandtab cindent tabstop=8 softtabstop=0 shiftwidth=8 textwidth=0: */
|