1 %{ 2 /*- 3 * Copyright (c) 1980 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * %sccs.include.redist.c% 7 * 8 * @(#)lang.l 5.9 (Berkeley) 06/19/92 9 */ 10 11 #include <ctype.h> 12 #include "y.tab.h" 13 #include "config.h" 14 15 #define tprintf if (do_trace) printf 16 17 /* 18 * Key word table 19 */ 20 21 struct kt { 22 char *kt_name; 23 int kt_val; 24 } key_words[] = { 25 { "and", AND }, 26 { "args", ARGS }, 27 { "at", AT }, 28 #if MACHINE_I386 29 { "bio", BIO }, 30 #endif MACHINE_I386 31 { "config", CONFIG }, 32 { "controller", CONTROLLER }, 33 { "cpu", CPU }, 34 { "csr", CSR }, 35 { "device", DEVICE }, 36 { "disk", DISK }, 37 { "drive", DRIVE }, 38 #if MACHINE_I386 39 { "drq", DRQ }, 40 #endif MACHINE_I386 41 { "dst", DST }, 42 { "dumps", DUMPS }, 43 { "flags", FLAGS }, 44 { "hz", HZ }, 45 { "ident", IDENT }, 46 #if MACHINE_I386 47 { "iomem", IOMEM }, 48 { "iosiz", IOSIZ }, 49 { "irq", IRQ }, 50 #endif MACHINE_I386 51 { "machine", MACHINE }, 52 { "major", MAJOR }, 53 { "makeoptions", MAKEOPTIONS }, 54 { "master", MASTER }, 55 { "maxusers", MAXUSERS }, 56 { "minor", MINOR }, 57 #if MACHINE_I386 58 { "net", NET }, 59 #endif MACHINE_I386 60 { "nexus", NEXUS }, 61 { "on", ON }, 62 { "options", OPTIONS }, 63 #if MACHINE_I386 64 { "port", PORT }, 65 #endif MACHINE_I386 66 { "priority", PRIORITY }, 67 { "pseudo-device",PSEUDO_DEVICE }, 68 { "root", ROOT }, 69 #if MACHINE_HP300 || MACHINE_LUNA68K 70 { "scode", NEXUS }, 71 #endif 72 { "size", SIZE }, 73 { "slave", SLAVE }, 74 { "swap", SWAP }, 75 { "tape", DEVICE }, 76 #if MACHINE_I386 77 { "tty", TTY }, 78 #endif MACHINE_I386 79 { "timezone", TIMEZONE }, 80 { "trace", TRACE }, 81 { "vector", VECTOR }, 82 { 0, 0 }, 83 }; 84 %} 85 WORD [A-Za-z_][-A-Za-z_]* 86 %% 87 {WORD} { 88 int i; 89 90 if ((i = kw_lookup(yytext)) == -1) 91 { 92 yylval.str = yytext; 93 tprintf("id(%s) ", yytext); 94 return ID; 95 } 96 tprintf("(%s) ", yytext); 97 return i; 98 } 99 \"[^"]+\" { 100 yytext[strlen(yytext)-1] = '\0'; 101 yylval.str = yytext + 1; 102 return ID; 103 } 104 0[0-7]* { 105 yylval.val = octal(yytext); 106 tprintf("#O:%o ", yylval.val); 107 return NUMBER; 108 } 109 0x[0-9a-fA-F]+ { 110 yylval.val = hex(yytext); 111 tprintf("#X:%x ", yylval.val); 112 return NUMBER; 113 } 114 [1-9][0-9]* { 115 yylval.val = atoi(yytext); 116 tprintf("#D:%d ", yylval.val); 117 return NUMBER; 118 } 119 [0-9]"."[0-9]* { 120 double atof(); 121 yylval.val = (int) (60 * atof(yytext) + 0.5); 122 return FPNUMBER; 123 } 124 "-" { 125 return MINUS; 126 } 127 "?" { 128 yylval.val = -1; 129 tprintf("? "); 130 return NUMBER; 131 } 132 \n/[ \t] { 133 yyline++; 134 tprintf("\n... "); 135 } 136 \n { 137 yyline++; 138 tprintf("\n"); 139 return SEMICOLON; 140 } 141 #.* { /* Ignored (comment) */; } 142 [ \t]* { /* Ignored (white space) */; } 143 ";" { return SEMICOLON; } 144 "," { return COMMA; } 145 "=" { return EQUALS; } 146 "@" { return AT; } 147 . { return yytext[0]; } 148 149 %% 150 /* 151 * kw_lookup 152 * Look up a string in the keyword table. Returns a -1 if the 153 * string is not a keyword otherwise it returns the keyword number 154 */ 155 156 kw_lookup(word) 157 register char *word; 158 { 159 register struct kt *kp; 160 161 for (kp = key_words; kp->kt_name != 0; kp++) 162 if (eq(word, kp->kt_name)) 163 return kp->kt_val; 164 return -1; 165 } 166 167 /* 168 * Number conversion routines 169 */ 170 171 octal(str) 172 char *str; 173 { 174 int num; 175 176 (void) sscanf(str, "%o", &num); 177 return num; 178 } 179 180 hex(str) 181 char *str; 182 { 183 int num; 184 185 (void) sscanf(str+2, "%x", &num); 186 return num; 187 } 188