aversive_10-03-12/modules/ihm/parse/parse.h

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/*  
 *  Copyright Droids Corporation (2007)
 *  Olivier MATZ <zer0@droids-corp.org>
 * 
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Revision : $Id: parse.h,v 1.3 2009-03-15 21:51:20 zer0 Exp $
 *
 *
 */

#ifndef _PARSE_H_
#define _PARSE_H_

#include <aversive/pgmspace.h>
#include <aversive/types.h>

#ifndef offsetof
#define offsetof(type, field)  ((size_t) &( ((type *)0)->field) )
#endif

#define PARSE_SUCCESS        0
#define PARSE_AMBIGUOUS     -1
#define PARSE_NOMATCH       -2
#define PARSE_BAD_ARGS      -3

struct token_hdr {
        struct token_ops *ops;
        uint8_t offset;
};
typedef struct token_hdr parse_token_hdr_t;

struct token_hdr_pgm {
        struct token_ops *ops;
        uint8_t offset;
} PROGMEM;
typedef struct token_hdr_pgm parse_pgm_token_hdr_t;

struct token_ops {
        int8_t (*parse)(parse_pgm_token_hdr_t *, const char *, void *);
        int8_t (*complete_get_nb)(parse_pgm_token_hdr_t *);
        int8_t (*complete_get_elt)(parse_pgm_token_hdr_t *, int8_t, char *, uint8_t);
        int8_t (*get_help)(parse_pgm_token_hdr_t *, char *, uint8_t);
};      

struct inst {
        /* f(parsed_struct, data) */
        void (*f)(void *, void *);
        void * data;
        char * help_str;
        prog_void * tokens[];
};
typedef struct inst parse_inst_t;
struct inst_pgm {
        /* f(parsed_struct, data) */
        void (*f)(void *, void *);
        void * data;
        char * help_str;
        prog_void * tokens[];
} PROGMEM;
typedef struct inst_pgm parse_pgm_inst_t;

typedef parse_pgm_inst_t * parse_ctx_t;
typedef PROGMEM parse_ctx_t parse_pgm_ctx_t;

int8_t parse(parse_pgm_ctx_t ctx[], const char * buf);

int8_t complete(parse_pgm_ctx_t ctx[], const char *buf, int16_t *state, 
                char *dst, uint8_t size);


/* true if(!c || iscomment(c) || isblank(c) || isendofline(c)) */
int isendoftoken(char c);

#endif /* _PARSE_H_ */

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