1 /*
2 * SysDB - src/include/frontend/parser.h
3 * Copyright (C) 2013 Sebastian 'tokkee' Harl <sh@tokkee.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
28 #ifndef SDB_FRONTEND_PARSER_H
29 #define SDB_FRONTEND_PARSER_H 1
31 #include "core/store.h"
32 #include "frontend/connection.h"
33 #include "utils/llist.h"
34 #include "utils/strbuf.h"
36 #ifdef __cplusplus
37 extern "C" {
38 #endif
40 /* parser modes */
41 enum {
42 SDB_PARSE_DEFAULT = 0,
43 SDB_PARSE_COND = 1 << 1,
44 SDB_PARSE_EXPR = 1 << 2,
45 };
47 /* YY_EXTRA data */
48 typedef struct {
49 /* list of sdb_conn_node_t objects */
50 sdb_llist_t *parsetree;
52 /* parser mode */
53 int mode;
55 /* buffer for parser error messages */
56 sdb_strbuf_t *errbuf;
57 } sdb_fe_yyextra_t;
59 /* see yyscan_t */
60 typedef void *sdb_fe_yyscan_t;
62 sdb_fe_yyscan_t
63 sdb_fe_scanner_init(const char *str, int len, sdb_fe_yyextra_t *yyext);
65 void
66 sdb_fe_scanner_destroy(sdb_fe_yyscan_t scanner);
68 int
69 sdb_fe_yyparse(sdb_fe_yyscan_t scanner);
71 sdb_store_matcher_t *
72 sdb_fe_parse_matcher(const char *cond, int len, sdb_strbuf_t *errbuf);
74 sdb_store_expr_t *
75 sdb_fe_parse_expr(const char *expr, int len, sdb_strbuf_t *errbuf);
77 /*
78 * sdb_fe_analyze:
79 * Analyze a parsed node, checking for semantical errors. Error messages will
80 * be written to the string buffer, if provided.
81 *
82 * Returns:
83 * - 0 if the node is semantically correct
84 * - a negative value else
85 */
86 int
87 sdb_fe_analyze(sdb_conn_node_t *node, sdb_strbuf_t *errbuf);
89 #ifdef __cplusplus
90 } /* extern "C" */
91 #endif
93 #endif /* ! SDB_FRONTEND_PARSER_H */
95 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */