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 #pragma GCC diagnostic ignored "-Wsign-compare" 39 #include <ctype.h> 40 #include <string.h> 41 #include "y.tab.h" 42 #include "config.h" 43 44 /* 45 * Key word table 46 */ 47 48 struct kt { 49 const char *kt_name; 50 int kt_val; 51 } key_words[] = { 52 { "at", AT }, 53 { "bus", BUS }, 54 { "config", CONFIG }, 55 { "cpu", CPU }, 56 { "device", DEVICE }, 57 { "disable", DISABLE }, 58 { "drive", DRIVE }, 59 { "drq", DRQ }, 60 { "flags", FLAGS }, 61 { "ident", IDENT }, 62 { "iomem", IOMEM }, 63 { "iosiz", IOSIZ }, 64 { "irq", IRQ }, 65 { "machine", CONFIG_MACHINE }, 66 { "machine_arch", CONFIG_MACHINE_ARCH }, 67 { "makeoptions", MAKEOPTIONS }, 68 { "maxusers", MAXUSERS }, 69 { "nexus", NEXUS }, 70 { "option", OPTIONS }, 71 { "options", OPTIONS }, 72 { "platform", CONFIG_PLATFORM }, 73 { "port", PORT }, 74 { "pseudo-device",PSEUDO_DEVICE }, 75 { "target", TARGET }, 76 { "unit", UNIT }, 77 { 0, 0 }, 78 }; 79 80 81 int kw_lookup(char *); 82 int octal(char *); 83 int hex(char *); 84 85 %} 86 WORD [A-Za-z_][-A-Za-z_]* 87 ID [A-Za-z_][-A-Za-z_0-9]* 88 %START NONUM TOEOL 89 %option noinput 90 %option nounput 91 %% 92 <NONUM>{WORD} { 93 int i; 94 95 BEGIN 0; 96 if ((i = kw_lookup(yytext)) == -1) 97 { 98 yylval.str = strdup(yytext); 99 return(ID); 100 } 101 return(i); 102 } 103 <INITIAL>{WORD}/[0-9]* { 104 int i; 105 106 if ((i = kw_lookup(yytext)) == -1) 107 REJECT; 108 if (i == DEVICE || i == PSEUDO_DEVICE || i == AT) 109 BEGIN NONUM; 110 return(i); 111 } 112 <INITIAL>{ID} { 113 BEGIN 0; 114 yylval.str = strdup(yytext); 115 return(ID); 116 } 117 \\\"[^"]+\\\" { 118 BEGIN 0; 119 yytext[yyleng-2] = '"'; 120 yytext[yyleng-1] = '\0'; 121 yylval.str = strdup(yytext + 1); 122 return(ID); 123 } 124 \"[^"]+\" { 125 BEGIN 0; 126 yytext[yyleng-1] = '\0'; 127 yylval.str = strdup(yytext + 1); 128 return(ID); 129 } 130 <TOEOL>[^# \t\n]* { 131 BEGIN 0; 132 yylval.str = strdup(yytext); 133 return(ID); 134 } 135 0[0-7]* { 136 yylval.val = octal(yytext); 137 return(NUMBER); 138 } 139 0x[0-9a-fA-F]+ { 140 yylval.val = hex(yytext); 141 return(NUMBER); 142 } 143 -?[1-9][0-9]* { 144 yylval.val = atoi(yytext); 145 return(NUMBER); 146 } 147 [0-9]"."[0-9]* { 148 yylval.val = (int)(60 * atof(yytext) + 0.5); 149 return(FPNUMBER); 150 } 151 "?" { 152 yylval.val = -1; 153 return(NUMBER); 154 } 155 \n/[ \t] { 156 yyline++; 157 } 158 \n { 159 yyline++; 160 return(SEMICOLON); 161 } 162 #.* { /* Ignored (comment) */; } 163 [ \t\f]* { /* Ignored (white space) */; } 164 ";" { return(SEMICOLON); } 165 "," { return(COMMA); } 166 "=" { BEGIN TOEOL; return(EQUALS); } 167 "@" { return(AT); } 168 . { return(yytext[0]); } 169 170 %% 171 /* 172 * kw_lookup 173 * Look up a string in the keyword table. Returns a -1 if the 174 * string is not a keyword otherwise it returns the keyword number 175 */ 176 177 int 178 kw_lookup(char *word) 179 { 180 struct kt *kp; 181 182 for (kp = key_words; kp->kt_name != NULL; kp++) 183 if (!strcmp(word, kp->kt_name)) 184 return(kp->kt_val); 185 return(-1); 186 } 187 188 /* 189 * Number conversion routines 190 */ 191 192 int 193 octal(char *str) 194 { 195 int num; 196 197 sscanf(str, "%o", &num); 198 return(num); 199 } 200 201 int 202 hex(char *str) 203 { 204 int num; 205 206 sscanf(str + 2, "%x", &num); 207 return(num); 208 } 209