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 */ 37 38 #include <ctype.h> 39 #include <string.h> 40 #include "y.tab.h" 41 #include "config.h" 42 43 /* 44 * Key word table 45 */ 46 47 struct kt { 48 const char *kt_name; 49 int kt_val; 50 } key_words[] = { 51 { "at", AT }, 52 { "bus", BUS }, 53 { "config", CONFIG }, 54 { "cpu", CPU }, 55 { "device", DEVICE }, 56 { "disable", DISABLE }, 57 { "drive", DRIVE }, 58 { "drq", DRQ }, 59 { "flags", FLAGS }, 60 { "ident", IDENT }, 61 { "iomem", IOMEM }, 62 { "iosiz", IOSIZ }, 63 { "irq", IRQ }, 64 { "machine", CONFIG_MACHINE }, 65 { "machine_arch", CONFIG_MACHINE_ARCH }, 66 { "makeoptions", MAKEOPTIONS }, 67 { "maxusers", MAXUSERS }, 68 { "nexus", NEXUS }, 69 { "option", OPTIONS }, 70 { "options", OPTIONS }, 71 { "platform", CONFIG_PLATFORM }, 72 { "port", PORT }, 73 { "pseudo-device",PSEUDO_DEVICE }, 74 { "target", TARGET }, 75 { "unit", UNIT }, 76 { 0, 0 }, 77 }; 78 79 80 int kw_lookup(char *); 81 int octal(char *); 82 int hex(char *); 83 84 %} 85 WORD [A-Za-z_][-A-Za-z_]* 86 ID [A-Za-z_][-A-Za-z_0-9]* 87 %START NONUM TOEOL 88 %option noinput 89 %option nounput 90 %% 91 <NONUM>{WORD} { 92 int i; 93 94 BEGIN 0; 95 if ((i = kw_lookup(yytext)) == -1) 96 { 97 yylval.str = strdup(yytext); 98 return(ID); 99 } 100 return(i); 101 } 102 <INITIAL>{WORD}/[0-9]* { 103 int i; 104 105 if ((i = kw_lookup(yytext)) == -1) 106 REJECT; 107 if (i == DEVICE || i == PSEUDO_DEVICE || i == AT) 108 BEGIN NONUM; 109 return(i); 110 } 111 <INITIAL>{ID} { 112 BEGIN 0; 113 yylval.str = strdup(yytext); 114 return(ID); 115 } 116 \\\"[^"]+\\\" { 117 BEGIN 0; 118 yytext[yyleng-2] = '"'; 119 yytext[yyleng-1] = '\0'; 120 yylval.str = strdup(yytext + 1); 121 return(ID); 122 } 123 \"[^"]+\" { 124 BEGIN 0; 125 yytext[yyleng-1] = '\0'; 126 yylval.str = strdup(yytext + 1); 127 return(ID); 128 } 129 <TOEOL>[^# \t\n]* { 130 BEGIN 0; 131 yylval.str = strdup(yytext); 132 return(ID); 133 } 134 0[0-7]* { 135 yylval.val = octal(yytext); 136 return(NUMBER); 137 } 138 0x[0-9a-fA-F]+ { 139 yylval.val = hex(yytext); 140 return(NUMBER); 141 } 142 -?[1-9][0-9]* { 143 yylval.val = atoi(yytext); 144 return(NUMBER); 145 } 146 [0-9]"."[0-9]* { 147 yylval.val = (int)(60 * atof(yytext) + 0.5); 148 return(FPNUMBER); 149 } 150 "?" { 151 yylval.val = -1; 152 return(NUMBER); 153 } 154 \n/[ \t] { 155 yyline++; 156 } 157 \n { 158 yyline++; 159 return(SEMICOLON); 160 } 161 #.* { /* Ignored (comment) */; } 162 [ \t\f]* { /* Ignored (white space) */; } 163 ";" { return(SEMICOLON); } 164 "," { return(COMMA); } 165 "=" { BEGIN TOEOL; return(EQUALS); } 166 "@" { return(AT); } 167 . { return(yytext[0]); } 168 169 %% 170 /* 171 * kw_lookup 172 * Look up a string in the keyword table. Returns a -1 if the 173 * string is not a keyword otherwise it returns the keyword number 174 */ 175 176 int 177 kw_lookup(char *word) 178 { 179 struct kt *kp; 180 181 for (kp = key_words; kp->kt_name != NULL; kp++) 182 if (!strcmp(word, kp->kt_name)) 183 return(kp->kt_val); 184 return(-1); 185 } 186 187 /* 188 * Number conversion routines 189 */ 190 191 int 192 octal(char *str) 193 { 194 int num; 195 196 sscanf(str, "%o", &num); 197 return(num); 198 } 199 200 int 201 hex(char *str) 202 { 203 int num; 204 205 sscanf(str + 2, "%x", &num); 206 return(num); 207 } 208