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 * $FreeBSD$ 36 */ 37 38 #include <ctype.h> 39 #include <string.h> 40 #include "y.tab.h" 41 #include "config.h" 42 43 #define YY_NO_UNPUT 44 45 /* 46 * Key word table 47 */ 48 49 struct kt { 50 char *kt_name; 51 int kt_val; 52 } key_words[] = { 53 { "at", AT }, 54 { "bus", BUS }, 55 { "conflicts", CONFLICTS }, 56 { "config", CONFIG }, 57 { "controller", CONTROLLER }, 58 { "cpu", CPU }, 59 { "device", DEVICE }, 60 { "disable", DISABLE }, 61 { "disk", DISK }, 62 { "drive", DRIVE }, 63 { "drq", DRQ }, 64 { "flags", FLAGS }, 65 { "ident", IDENT }, 66 { "iomem", IOMEM }, 67 { "iosiz", IOSIZ }, 68 { "irq", IRQ }, 69 { "machine", ARCH }, /* MACHINE is defined in /sys/param.h */ 70 { "makeoptions", MAKEOPTIONS }, 71 { "maxusers", MAXUSERS }, 72 { "nexus", NEXUS }, 73 { "option", OPTIONS }, 74 { "options", OPTIONS }, 75 { "port", PORT }, 76 { "pseudo-device",PSEUDO_DEVICE }, 77 { "tape", TAPE }, 78 { "target", TARGET }, 79 { "unit", UNIT }, 80 { 0, 0 }, 81 }; 82 83 84 int kw_lookup __P((char *)); 85 int octal __P((char *)); 86 int hex __P((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 == CONTROLLER || i == DEVICE || i == DISK || i == TAPE || 110 i == PSEUDO_DEVICE || i == AT) 111 BEGIN NONUM; 112 return i; 113 } 114 <INITIAL>{ID} { 115 BEGIN 0; 116 yylval.str = strdup(yytext); 117 return ID; 118 } 119 \\\"[^"]+\\\" { 120 BEGIN 0; 121 yytext[yyleng-2] = '"'; 122 yytext[yyleng-1] = '\0'; 123 yylval.str = strdup(yytext + 1); 124 return ID; 125 } 126 \"[^"]+\" { 127 BEGIN 0; 128 yytext[yyleng-1] = '\0'; 129 yylval.str = strdup(yytext + 1); 130 return ID; 131 } 132 <TOEOL>[^# \t\n]* { 133 BEGIN 0; 134 yylval.str = strdup(yytext); 135 return ID; 136 } 137 0[0-7]* { 138 yylval.val = octal(yytext); 139 return NUMBER; 140 } 141 0x[0-9a-fA-F]+ { 142 yylval.val = hex(yytext); 143 return NUMBER; 144 } 145 -?[1-9][0-9]* { 146 yylval.val = atoi(yytext); 147 return NUMBER; 148 } 149 [0-9]"."[0-9]* { 150 yylval.val = (int) (60 * atof(yytext) + 0.5); 151 return FPNUMBER; 152 } 153 "?" { 154 yylval.val = -1; 155 return NUMBER; 156 } 157 \n/[ \t] { 158 yyline++; 159 } 160 \n { 161 yyline++; 162 return SEMICOLON; 163 } 164 #.* { /* Ignored (comment) */; } 165 [ \t\f]* { /* Ignored (white space) */; } 166 ";" { return SEMICOLON; } 167 "," { return COMMA; } 168 "=" { BEGIN TOEOL; return EQUALS; } 169 "@" { return AT; } 170 . { return yytext[0]; } 171 172 %% 173 /* 174 * kw_lookup 175 * Look up a string in the keyword table. Returns a -1 if the 176 * string is not a keyword otherwise it returns the keyword number 177 */ 178 179 int 180 kw_lookup(word) 181 register char *word; 182 { 183 register struct kt *kp; 184 185 for (kp = key_words; kp->kt_name != 0; kp++) 186 if (eq(word, kp->kt_name)) 187 return kp->kt_val; 188 return -1; 189 } 190 191 /* 192 * Number conversion routines 193 */ 194 195 int 196 octal(str) 197 char *str; 198 { 199 int num; 200 201 (void) sscanf(str, "%o", &num); 202 return num; 203 } 204 205 int 206 hex(str) 207 char *str; 208 { 209 int num; 210 211 (void) sscanf(str+2, "%x", &num); 212 return num; 213 } 214