1 /* $NetBSD: sel-gram.y,v 1.5 2023/06/19 21:41:44 christos Exp $ */ 2 3 /* 4 * Copyright (c) 2017 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 %union { 47 char *string; 48 struct hx_expr *expr; 49 } 50 51 %token kw_TRUE 52 %token kw_FALSE 53 %token kw_AND 54 %token kw_OR 55 %token kw_IN 56 %token kw_TAILMATCH 57 58 %type <expr> expr 59 %type <expr> comp 60 %type <expr> word words 61 %type <expr> number 62 %type <expr> string 63 %type <expr> function 64 %type <expr> variable variables 65 66 %token <string> NUMBER 67 %token <string> STRING 68 %token <string> IDENTIFIER 69 70 %start start 71 72 %% 73 74 start: expr { _hx509_expr_input.expr = $1; } 75 76 expr : kw_TRUE { $$ = _hx509_make_expr(op_TRUE, NULL, NULL); } 77 | kw_FALSE { $$ = _hx509_make_expr(op_FALSE, NULL, NULL); } 78 | '!' expr { $$ = _hx509_make_expr(op_NOT, $2, NULL); } 79 | expr kw_AND expr { $$ = _hx509_make_expr(op_AND, $1, $3); } 80 | expr kw_OR expr { $$ = _hx509_make_expr(op_OR, $1, $3); } 81 | '(' expr ')' { $$ = $2; } 82 | comp { $$ = _hx509_make_expr(op_COMP, $1, NULL); } 83 ; 84 85 words : word { $$ = _hx509_make_expr(expr_WORDS, $1, NULL); } 86 | word ',' words { $$ = _hx509_make_expr(expr_WORDS, $1, $3); } 87 ; 88 89 comp : word '=' '=' word { $$ = _hx509_make_expr(comp_EQ, $1, $4); } 90 | word '!' '=' word { $$ = _hx509_make_expr(comp_NE, $1, $4); } 91 | word kw_TAILMATCH word { $$ = _hx509_make_expr(comp_TAILEQ, $1, $3); } 92 | word kw_IN '(' words ')' { $$ = _hx509_make_expr(comp_IN, $1, $4); } 93 | word kw_IN variable { $$ = _hx509_make_expr(comp_IN, $1, $3); } 94 ; 95 96 word : number { $$ = $1; } 97 | string { $$ = $1; } 98 | function { $$ = $1; } 99 | variable { $$ = $1; } 100 ; 101 102 number : NUMBER { $$ = _hx509_make_expr(expr_NUMBER, $1, NULL); }; 103 string : STRING { $$ = _hx509_make_expr(expr_STRING, $1, NULL); }; 104 105 function: IDENTIFIER '(' words ')' { 106 $$ = _hx509_make_expr(expr_FUNCTION, $1, $3); } 107 ; 108 variable: '%' '{' variables '}' { $$ = $3; } 109 ; 110 111 variables: IDENTIFIER '.' variables { 112 $$ = _hx509_make_expr(expr_VAR, $1, $3); } 113 | IDENTIFIER { 114 $$ = _hx509_make_expr(expr_VAR, $1, NULL); } 115 ; 116