1 /* $NetBSD: sel-gram.y,v 1.3 2019/12/15 22:50:50 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 #if !defined(yylex) 45 #define yylex _hx509_sel_yylex 46 #define yywrap _hx509_sel_yywrap 47 #endif 48 #if !defined(yyparse) 49 #define yyparse _hx509_sel_yyparse 50 #define yyerror _hx509_sel_yyerror 51 #define yylval _hx509_sel_yylval 52 #define yychar _hx509_sel_yychar 53 #define yydebug _hx509_sel_yydebug 54 #define yynerrs _hx509_sel_yynerrs 55 #endif 56 57 %} 58 59 %union { 60 char *string; 61 struct hx_expr *expr; 62 } 63 64 %token kw_TRUE 65 %token kw_FALSE 66 %token kw_AND 67 %token kw_OR 68 %token kw_IN 69 %token kw_TAILMATCH 70 71 %type <expr> expr 72 %type <expr> comp 73 %type <expr> word words 74 %type <expr> number 75 %type <expr> string 76 %type <expr> function 77 %type <expr> variable variables 78 79 %token <string> NUMBER 80 %token <string> STRING 81 %token <string> IDENTIFIER 82 83 %start start 84 85 %% 86 87 start: expr { _hx509_expr_input.expr = $1; } 88 89 expr : kw_TRUE { $$ = _hx509_make_expr(op_TRUE, NULL, NULL); } 90 | kw_FALSE { $$ = _hx509_make_expr(op_FALSE, NULL, NULL); } 91 | '!' expr { $$ = _hx509_make_expr(op_NOT, $2, NULL); } 92 | expr kw_AND expr { $$ = _hx509_make_expr(op_AND, $1, $3); } 93 | expr kw_OR expr { $$ = _hx509_make_expr(op_OR, $1, $3); } 94 | '(' expr ')' { $$ = $2; } 95 | comp { $$ = _hx509_make_expr(op_COMP, $1, NULL); } 96 ; 97 98 words : word { $$ = _hx509_make_expr(expr_WORDS, $1, NULL); } 99 | word ',' words { $$ = _hx509_make_expr(expr_WORDS, $1, $3); } 100 ; 101 102 comp : word '=' '=' word { $$ = _hx509_make_expr(comp_EQ, $1, $4); } 103 | word '!' '=' word { $$ = _hx509_make_expr(comp_NE, $1, $4); } 104 | word kw_TAILMATCH word { $$ = _hx509_make_expr(comp_TAILEQ, $1, $3); } 105 | word kw_IN '(' words ')' { $$ = _hx509_make_expr(comp_IN, $1, $4); } 106 | word kw_IN variable { $$ = _hx509_make_expr(comp_IN, $1, $3); } 107 ; 108 109 word : number { $$ = $1; } 110 | string { $$ = $1; } 111 | function { $$ = $1; } 112 | variable { $$ = $1; } 113 ; 114 115 number : NUMBER { $$ = _hx509_make_expr(expr_NUMBER, $1, NULL); }; 116 string : STRING { $$ = _hx509_make_expr(expr_STRING, $1, NULL); }; 117 118 function: IDENTIFIER '(' words ')' { 119 $$ = _hx509_make_expr(expr_FUNCTION, $1, $3); } 120 ; 121 variable: '%' '{' variables '}' { $$ = $3; } 122 ; 123 124 variables: IDENTIFIER '.' variables { 125 $$ = _hx509_make_expr(expr_VAR, $1, $3); } 126 | IDENTIFIER { 127 $$ = _hx509_make_expr(expr_VAR, $1, NULL); } 128 ; 129