/* Copyright (c) 2014, Vitaly Bursov <vitaly<AT>bursov.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the author nor the names of its contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef LEXER_H
#define LEXER_H
#include "csp_defs.h"
struct ragel_lexer_t {
uint8_t *te; /* ragel */
uint8_t *ts; /* ragel */
int cs; /* ragel */
int act; /* ragel */
uint8_t *buffer;
uint16_t bufsize;
/* state offsets */
uint16_t p_offs; /* ragel, offset from the buffer start */
uint16_t pe_offs; /* ragel, offset from the buffer start */
/* other data */
uint16_t lineno;
uint8_t status;
/* token information for a parser */
uint8_t *token;
uint16_t token_len;
};
#define LEX_STATUS_WIP 0
#define LEX_STATUS_EOF 1
#define LEX_STATUS_ERR 2 /* error states must be >= LEX_STATUS_ERR */
#define LEX_STATUS_OVERFLOW 3
#define LEX_STATUS_BAD_TOKEN 4
int scanner_init(struct ragel_lexer_t *YY, uint8_t *buffer, uint16_t size);
int yylex(void *yylval, void *lex_state);
#endif /* LEXER_H */
