1 %{ 2 /*- 3 * Copyright (c) 1980, 1993 4 * The Regents of the University of California. 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 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by the University of 17 * California, Berkeley and its contributors. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)lang.l 8.1 (Berkeley) 6/6/93 35 * $FreeBSD: src/usr.sbin/config/lang.l,v 1.27 1999/11/09 07:20:22 peter Exp $ 36 * $DragonFly: src/usr.sbin/config/lang.l,v 1.14 2008/05/01 09:24:42 swildner Exp $ 37 */ 38 39 #include <ctype.h> 40 #include <string.h> 41 #include "y.tab.h" 42 #include "config.h" 43 44 #define YY_NO_INPUT 45 #define YY_NO_UNPUT 46 47 /* 48 * Key word table 49 */ 50 51 struct kt { 52 const char *kt_name; 53 int kt_val; 54 } key_words[] = { 55 { "at", AT }, 56 { "bus", BUS }, 57 { "config", CONFIG }, 58 { "cpu", CPU }, 59 { "device", DEVICE }, 60 { "disable", DISABLE }, 61 { "drive", DRIVE }, 62 { "drq", DRQ }, 63 { "flags", FLAGS }, 64 { "ident", IDENT }, 65 { "iomem", IOMEM }, 66 { "iosiz", IOSIZ }, 67 { "irq", IRQ }, 68 { "machine", CONFIG_MACHINE }, 69 { "machine_arch", CONFIG_MACHINE_ARCH }, 70 { "makeoptions", MAKEOPTIONS }, 71 { "maxusers", MAXUSERS }, 72 { "nexus", NEXUS }, 73 { "option", OPTIONS }, 74 { "options", OPTIONS }, 75 { "platform", CONFIG_PLATFORM }, 76 { "port", PORT }, 77 { "pseudo-device",PSEUDO_DEVICE }, 78 { "target", TARGET }, 79 { "unit", UNIT }, 80 { 0, 0 }, 81 }; 82 83 84 int kw_lookup(char *); 85 int octal(char *); 86 int hex(char *); 87 88 %} 89 WORD [A-Za-z_][-A-Za-z_]* 90 ID [A-Za-z_][-A-Za-z_0-9]* 91 %START NONUM TOEOL 92 %% 93 <NONUM>{WORD} { 94 int i; 95 96 BEGIN 0; 97 if ((i = kw_lookup(yytext)) == -1) 98 { 99 yylval.str = strdup(yytext); 100 return(ID); 101 } 102 return(i); 103 } 104 <INITIAL>{WORD}/[0-9]* { 105 int i; 106 107 if ((i = kw_lookup(yytext)) == -1) 108 REJECT; 109 if (i == DEVICE || i == PSEUDO_DEVICE || i == AT) 110 BEGIN NONUM; 111 return(i); 112 } 113 <INITIAL>{ID} { 114 BEGIN 0; 115 yylval.str = strdup(yytext); 116 return(ID); 117 } 118 \\\"[^"]+\\\" { 119 BEGIN 0; 120 yytext[yyleng-2] = '"'; 121 yytext[yyleng-1] = '\0'; 122 yylval.str = strdup(yytext + 1); 123 return(ID); 124 } 125 \"[^"]+\" { 126 BEGIN 0; 127 yytext[yyleng-1] = '\0'; 128 yylval.str = strdup(yytext + 1); 129 return(ID); 130 } 131 <TOEOL>[^# \t\n]* { 132 BEGIN 0; 133 yylval.str = strdup(yytext); 134 return(ID); 135 } 136 0[0-7]* { 137 yylval.val = octal(yytext); 138 return(NUMBER); 139 } 140 0x[0-9a-fA-F]+ { 141 yylval.val = hex(yytext); 142 return(NUMBER); 143 } 144 -?[1-9][0-9]* { 145 yylval.val = atoi(yytext); 146 return(NUMBER); 147 } 148 [0-9]"."[0-9]* { 149 yylval.val = (int)(60 * atof(yytext) + 0.5); 150 return(FPNUMBER); 151 } 152 "?" { 153 yylval.val = -1; 154 return(NUMBER); 155 } 156 \n/[ \t] { 157 yyline++; 158 } 159 \n { 160 yyline++; 161 return(SEMICOLON); 162 } 163 #.* { /* Ignored (comment) */; } 164 [ \t\f]* { /* Ignored (white space) */; } 165 ";" { return(SEMICOLON); } 166 "," { return(COMMA); } 167 "=" { BEGIN TOEOL; return(EQUALS); } 168 "@" { return(AT); } 169 . { return(yytext[0]); } 170 171 %% 172 /* 173 * kw_lookup 174 * Look up a string in the keyword table. Returns a -1 if the 175 * string is not a keyword otherwise it returns the keyword number 176 */ 177 178 int 179 kw_lookup(char *word) 180 { 181 struct kt *kp; 182 183 for (kp = key_words; kp->kt_name != NULL; kp++) 184 if (!strcmp(word, kp->kt_name)) 185 return(kp->kt_val); 186 return(-1); 187 } 188 189 /* 190 * Number conversion routines 191 */ 192 193 int 194 octal(char *str) 195 { 196 int num; 197 198 sscanf(str, "%o", &num); 199 return(num); 200 } 201 202 int 203 hex(char *str) 204 { 205 int num; 206 207 sscanf(str + 2, "%x", &num); 208 return(num); 209 } 210