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rcslex.h
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rcslex.h
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/*-
* Copyright (c) 2012, Maxime Henrion <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR OR CONTRIBUTORS 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 _RCSLEX_H_
#define _RCSLEX_H_
#include <string.h> /* For strlen() and memcmp() in the macros. */
/* Token types for the lexer. */
#define RCSLEX_SCOLON 0
#define RCSLEX_COLON 1
#define RCSLEX_ID 2
#define RCSLEX_STRING 3
struct rcslex;
struct rcstok {
int type;
char *value;
size_t len;
};
struct rcslex *rcslex_new(const char *);
struct rcstok *rcslex_get(struct rcslex *);
char *rcslex_dup(struct rcslex *, size_t *);
struct rcstok *rcslex_want(struct rcslex *, int, size_t, const char *);
void rcslex_unget(struct rcslex *);
int rcslex_eof(struct rcslex *);
void rcslex_free(struct rcslex *);
char *rcslex_get_num(struct rcslex *);
char *rcslex_get_id(struct rcslex *);
char *rcslex_get_sym(struct rcslex *);
char *rcslex_get_string(struct rcslex *, size_t *);
#define rcslex_want_kw(lex, kw) rcslex_want(lex, RCSLEX_ID, strlen(kw), kw)
#define rcslex_want_id(lex) rcslex_want(lex, RCSLEX_ID, 0, NULL)
#define rcslex_want_string(lex) rcslex_want(lex, RCSLEX_STRING, 0, NULL)
#define rcslex_want_scolon(lex) rcslex_want(lex, RCSLEX_SCOLON, 1, NULL)
#define rcslex_want_colon(lex) rcslex_want(lex, RCSLEX_COLON, 1, NULL)
#define rcstok_is_kw(tok, kw) (tok->type == RCSLEX_ID && \
tok->len == strlen(kw) && \
memcmp(tok->value, kw, tok->len) == 0)
int rcstok_validate_id(struct rcstok *);
int rcstok_validate_num(struct rcstok *);
#endif /* !_RCSLEX_H_ */