projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| bc2ed385 | 1 | %{ |
| 57b7808b | 2 | /* lang.l 1.8 81/05/18 */ |
| bc2ed385 MT |
3 | |
| 4 | #include <ctype.h> | |
| 5 | #include "y.tab.h" | |
| 6 | #include "config.h" | |
| 7 | ||
| 8 | #define tprintf if (do_trace) printf | |
| b3043913 MT |
9 | |
| 10 | int yylval; | |
| 11 | ||
| bc2ed385 MT |
12 | /* |
| 13 | * Key word table | |
| 14 | */ | |
| 15 | ||
| 16 | struct kt { | |
| 17 | char *kt_name; | |
| 18 | int kt_val; | |
| 19 | } key_words[] = { | |
| 20 | "cpu", CPU, "ident", IDENT, "config", CONFIG, "options", OPTIONS, | |
| 21 | "device", DEVICE, "controller", CONTROLLER, "uba", UBA, "mba", MBA, | |
| 22 | "csr", CSR, "nexus", NEXUS, "drive", DRIVE, "vector", VECTOR, | |
| 23 | "pseudo-device", PSEUDO_DEVICE, "flags", FLAGS, "trace", TRACE, | |
| 5ff81582 | 24 | "disk", DISK, "tape", DEVICE, "slave", SLAVE, "at", AT, |
| a5e18d6b | 25 | "hz", HZ, "timezone", TIMEZONE, "dst", DST, "maxusers", MAXUSERS, |
| 9c98d1fb | 26 | "master", MASTER, |
| bc2ed385 MT |
27 | 0,0, |
| 28 | }; | |
| 29 | %} | |
| b3043913 | 30 | WORD [A-Za-z_][-A-Za-z_]* |
| bc2ed385 MT |
31 | %% |
| 32 | {WORD} { | |
| 33 | int i; | |
| 34 | ||
| 35 | if ((i = kw_lookup(yytext)) == -1) | |
| 36 | { | |
| 37 | yylval = (int) yytext; | |
| 38 | tprintf("id(%s) ", yytext); | |
| 39 | return ID; | |
| 40 | } | |
| 41 | tprintf("(%s) ", yytext); | |
| 42 | return i; | |
| 43 | } | |
| dea0cacc MT |
44 | \"[^"]+\" { |
| 45 | yytext[strlen(yytext)-1] = '\0'; | |
| 46 | yylval = (int) yytext + 1; | |
| 47 | return ID; | |
| 48 | } | |
| bc2ed385 MT |
49 | 0[0-7]* { |
| 50 | yylval = octal(yytext); | |
| 51 | tprintf("#O:%o ", yylval); | |
| 52 | return NUMBER; | |
| 53 | } | |
| 54 | 0x[0-9a-f]+ { | |
| 55 | yylval = hex(yytext); | |
| 56 | tprintf("#X:%x ", yylval); | |
| 57 | return NUMBER; | |
| 58 | } | |
| 59 | [1-9][0-9]* { | |
| 60 | yylval = atoi(yytext); | |
| 61 | tprintf("#D:%d ", yylval); | |
| 62 | return NUMBER; | |
| 63 | } | |
| a5e18d6b MT |
64 | [0-9]"."[0-9]* { |
| 65 | float atof(); | |
| 66 | yylval = (int) (60 * atof(yytext) + 0.5); | |
| 67 | return FPNUMBER; | |
| 68 | } | |
| 57b7808b BJ |
69 | "-" { |
| 70 | return MINUS; | |
| 71 | } | |
| bc2ed385 MT |
72 | "?" { |
| 73 | yylval = -1; | |
| 74 | tprintf("? "); | |
| 75 | return NUMBER; | |
| 76 | } | |
| 77 | \n/[ \t] { | |
| 78 | yyline++; | |
| 79 | tprintf("\n... "); | |
| 80 | } | |
| 81 | \n { | |
| 82 | yyline++; | |
| 83 | tprintf("\n"); | |
| 84 | return SEMICOLON; | |
| 85 | } | |
| 86 | ^#.* { /* Ignored (comment) */; } | |
| 87 | [ \t]* { /* Ignored (white space) */; } | |
| 88 | ";" { return SEMICOLON; } | |
| 9c98d1fb | 89 | "," { return COMMA; } |
| bc2ed385 MT |
90 | %% |
| 91 | /* | |
| 92 | * kw_lookup | |
| 93 | * Look up a string in the keyword table. Returns a -1 if the | |
| 94 | * string is not a keyword otherwise it returns the keyword number | |
| 95 | */ | |
| 96 | ||
| 97 | kw_lookup(word) | |
| 98 | register char *word; | |
| 99 | { | |
| 100 | register struct kt *kp; | |
| 101 | ||
| 102 | for (kp = key_words; kp->kt_name != 0; kp++) | |
| 103 | if (eq(word, kp->kt_name)) | |
| 104 | return kp->kt_val; | |
| 105 | return -1; | |
| 106 | } | |
| 107 | ||
| 108 | /* | |
| 109 | * Number conversion routines | |
| 110 | */ | |
| 111 | ||
| 112 | octal(str) | |
| 113 | char *str; | |
| 114 | { | |
| 115 | int num; | |
| 116 | ||
| 117 | sscanf(str, "%o", &num); | |
| 118 | return num; | |
| 119 | } | |
| 120 | ||
| 121 | hex(str) | |
| 122 | char *str; | |
| 123 | { | |
| 124 | int num; | |
| 125 | ||
| cc03da8f | 126 | sscanf(str+2, "%x", &num); |
| bc2ed385 MT |
127 | return num; |
| 128 | } |