1/*
2 * Copyright (c) 2008 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
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 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * 3. Neither the name of the Institute nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34%{
35#ifdef HAVE_CONFIG_H
36#include <config.h>
37#endif
38#include <stdio.h>
39#include <stdlib.h>
40#include <hx_locl.h>
41
42
43%}
44
45%union {
46    char *string;
47    struct hx_expr *expr;
48}
49
50%token kw_TRUE
51%token kw_FALSE
52%token kw_AND
53%token kw_OR
54%token kw_IN
55%token kw_TAILMATCH
56
57%type <expr> expr
58%type <expr> comp
59%type <expr> word words
60%type <expr> number
61%type <expr> string
62%type <expr> function
63%type <expr> variable variables
64
65%token <string> NUMBER
66%token <string> STRING
67%token <string> IDENTIFIER
68
69%start start
70
71%%
72
73start:	expr			{ _hx509_expr_input.expr = $1; }
74
75expr	: kw_TRUE		{ $$ = _hx509_make_expr(op_TRUE, NULL, NULL); }
76	| kw_FALSE		{ $$ = _hx509_make_expr(op_FALSE, NULL, NULL); }
77	| '!' expr		{ $$ = _hx509_make_expr(op_NOT, $2, NULL); }
78	| expr kw_AND expr	{ $$ = _hx509_make_expr(op_AND, $1, $3); }
79	| expr kw_OR expr	{ $$ = _hx509_make_expr(op_OR, $1, $3); }
80	| '(' expr ')'		{ $$ = $2; }
81	| comp			{ $$ = _hx509_make_expr(op_COMP, $1, NULL); }
82	;
83
84words	: word			{ $$ = _hx509_make_expr(expr_WORDS, $1, NULL); }
85	| word ',' words	{ $$ = _hx509_make_expr(expr_WORDS, $1, $3); }
86	;
87
88comp	: word '=' '=' word	{ $$ = _hx509_make_expr(comp_EQ, $1, $4); }
89	| word '!' '=' word	{ $$ = _hx509_make_expr(comp_NE, $1, $4); }
90	| word kw_TAILMATCH word { $$ = _hx509_make_expr(comp_TAILEQ, $1, $3); }
91	| word kw_IN '(' words ')' { $$ = _hx509_make_expr(comp_IN, $1, $4); }
92	| word kw_IN variable	{ $$ = _hx509_make_expr(comp_IN, $1, $3); }
93	;
94
95word	: number		{ $$ = $1; }
96	| string		{ $$ = $1; }
97	| function		{ $$ = $1; }
98	| variable		{ $$ = $1; }
99	;
100
101number	: NUMBER	{ $$ = _hx509_make_expr(expr_NUMBER, $1, NULL); };
102string	: STRING	{ $$ = _hx509_make_expr(expr_STRING, $1, NULL); };
103
104function: IDENTIFIER '(' words ')' {
105			$$ = _hx509_make_expr(expr_FUNCTION, $1, $3); }
106	;
107variable: '%' '{' variables '}'	{ $$ = $3; }
108	;
109
110variables: IDENTIFIER '.' variables 	{
111			$$ = _hx509_make_expr(expr_VAR, $1, $3); }
112	| IDENTIFIER			{
113			$$ = _hx509_make_expr(expr_VAR, $1, NULL); }
114	;
115