1 /* $NetBSD: sel-gram.y,v 1.1.1.1 2011/04/13 18:15:12 elric Exp $ */ 2 3 /* 4 * Copyright (c) 2008 Kungliga Tekniska Högskolan 5 * (Royal Institute of Technology, Stockholm, Sweden). 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 %{ 37 #ifdef HAVE_CONFIG_H 38 #include <config.h> 39 #endif 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <hx_locl.h> 43 44 45 %} 46 47 %union { 48 char *string; 49 struct hx_expr *expr; 50 } 51 52 %token kw_TRUE 53 %token kw_FALSE 54 %token kw_AND 55 %token kw_OR 56 %token kw_IN 57 %token kw_TAILMATCH 58 59 %type <expr> expr 60 %type <expr> comp 61 %type <expr> word words 62 %type <expr> number 63 %type <expr> string 64 %type <expr> function 65 %type <expr> variable variables 66 67 %token <string> NUMBER 68 %token <string> STRING 69 %token <string> IDENTIFIER 70 71 %start start 72 73 %% 74 75 start: expr { _hx509_expr_input.expr = $1; } 76 77 expr : kw_TRUE { $$ = _hx509_make_expr(op_TRUE, NULL, NULL); } 78 | kw_FALSE { $$ = _hx509_make_expr(op_FALSE, NULL, NULL); } 79 | '!' expr { $$ = _hx509_make_expr(op_NOT, $2, NULL); } 80 | expr kw_AND expr { $$ = _hx509_make_expr(op_AND, $1, $3); } 81 | expr kw_OR expr { $$ = _hx509_make_expr(op_OR, $1, $3); } 82 | '(' expr ')' { $$ = $2; } 83 | comp { $$ = _hx509_make_expr(op_COMP, $1, NULL); } 84 ; 85 86 words : word { $$ = _hx509_make_expr(expr_WORDS, $1, NULL); } 87 | word ',' words { $$ = _hx509_make_expr(expr_WORDS, $1, $3); } 88 ; 89 90 comp : word '=' '=' word { $$ = _hx509_make_expr(comp_EQ, $1, $4); } 91 | word '!' '=' word { $$ = _hx509_make_expr(comp_NE, $1, $4); } 92 | word kw_TAILMATCH word { $$ = _hx509_make_expr(comp_TAILEQ, $1, $3); } 93 | word kw_IN '(' words ')' { $$ = _hx509_make_expr(comp_IN, $1, $4); } 94 | word kw_IN variable { $$ = _hx509_make_expr(comp_IN, $1, $3); } 95 ; 96 97 word : number { $$ = $1; } 98 | string { $$ = $1; } 99 | function { $$ = $1; } 100 | variable { $$ = $1; } 101 ; 102 103 number : NUMBER { $$ = _hx509_make_expr(expr_NUMBER, $1, NULL); }; 104 string : STRING { $$ = _hx509_make_expr(expr_STRING, $1, NULL); }; 105 106 function: IDENTIFIER '(' words ')' { 107 $$ = _hx509_make_expr(expr_FUNCTION, $1, $3); } 108 ; 109 variable: '%' '{' variables '}' { $$ = $3; } 110 ; 111 112 variables: IDENTIFIER '.' variables { 113 $$ = _hx509_make_expr(expr_VAR, $1, $3); } 114 | IDENTIFIER { 115 $$ = _hx509_make_expr(expr_VAR, $1, NULL); } 116 ; 117