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216 lines
4.9 KiB
Plaintext
216 lines
4.9 KiB
Plaintext
%{
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/*-
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)lang.l 8.1 (Berkeley) 6/6/93
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*/
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#include <ctype.h>
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#include "y.tab.h"
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#include "config.h"
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#define tprintf if (do_trace) printf
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/*
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* Key word table
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*/
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struct kt {
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char *kt_name;
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int kt_val;
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} key_words[] = {
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{ "and", AND },
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{ "args", ARGS },
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{ "at", AT },
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#if MACHINE_I386
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{ "bio", BIO },
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#endif MACHINE_I386
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{ "config", CONFIG },
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{ "controller", CONTROLLER },
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{ "cpu", CPU },
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{ "csr", CSR },
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{ "device", DEVICE },
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{ "disk", DISK },
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{ "drive", DRIVE },
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#if MACHINE_I386
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{ "drq", DRQ },
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#endif MACHINE_I386
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{ "dst", DST },
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{ "dumps", DUMPS },
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{ "flags", FLAGS },
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{ "hz", HZ },
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{ "ident", IDENT },
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{ "interleave", INTERLEAVE },
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#if MACHINE_I386
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{ "iomem", IOMEM },
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{ "iosiz", IOSIZ },
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{ "irq", IRQ },
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#endif MACHINE_I386
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{ "machine", MACHINE },
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{ "major", MAJOR },
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{ "makeoptions", MAKEOPTIONS },
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{ "master", MASTER },
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{ "maxusers", MAXUSERS },
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{ "minor", MINOR },
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#if MACHINE_I386
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{ "net", NET },
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#endif MACHINE_I386
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{ "nexus", NEXUS },
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{ "on", ON },
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{ "options", OPTIONS },
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#if MACHINE_I386
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{ "port", PORT },
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#endif MACHINE_I386
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{ "priority", PRIORITY },
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{ "pseudo-device",PSEUDO_DEVICE },
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{ "root", ROOT },
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#if MACHINE_HP300 || MACHINE_LUNA68K
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{ "scode", NEXUS },
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#endif
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{ "sequential", SEQUENTIAL },
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{ "size", SIZE },
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{ "slave", SLAVE },
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{ "swap", SWAP },
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{ "tape", DEVICE },
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#if MACHINE_I386
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{ "tty", TTY },
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#endif MACHINE_I386
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{ "timezone", TIMEZONE },
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{ "trace", TRACE },
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{ "vector", VECTOR },
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{ 0, 0 },
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};
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%}
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WORD [A-Za-z_][-A-Za-z_]*
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%%
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{WORD} {
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int i;
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if ((i = kw_lookup(yytext)) == -1)
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{
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yylval.str = yytext;
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tprintf("id(%s) ", yytext);
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return ID;
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}
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tprintf("(%s) ", yytext);
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return i;
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}
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\"[^"]+\" {
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yytext[strlen(yytext)-1] = '\0';
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yylval.str = yytext + 1;
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return ID;
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}
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0[0-7]* {
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yylval.val = octal(yytext);
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tprintf("#O:%o ", yylval.val);
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return NUMBER;
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}
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0x[0-9a-fA-F]+ {
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yylval.val = hex(yytext);
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tprintf("#X:%x ", yylval.val);
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return NUMBER;
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}
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[1-9][0-9]* {
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yylval.val = atoi(yytext);
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tprintf("#D:%d ", yylval.val);
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return NUMBER;
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}
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[0-9]"."[0-9]* {
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double atof();
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yylval.val = (int) (60 * atof(yytext) + 0.5);
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return FPNUMBER;
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}
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"-" {
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return MINUS;
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}
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"?" {
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yylval.val = -1;
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tprintf("? ");
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return NUMBER;
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}
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\n/[ \t] {
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yyline++;
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tprintf("\n... ");
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}
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\n {
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yyline++;
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tprintf("\n");
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return SEMICOLON;
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}
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#.* { /* Ignored (comment) */; }
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[ \t]* { /* Ignored (white space) */; }
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";" { return SEMICOLON; }
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"," { return COMMA; }
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"=" { return EQUALS; }
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"@" { return AT; }
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. { return yytext[0]; }
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%%
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/*
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* kw_lookup
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* Look up a string in the keyword table. Returns a -1 if the
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* string is not a keyword otherwise it returns the keyword number
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*/
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kw_lookup(word)
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register char *word;
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{
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register struct kt *kp;
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for (kp = key_words; kp->kt_name != 0; kp++)
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if (eq(word, kp->kt_name))
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return kp->kt_val;
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return -1;
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}
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/*
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* Number conversion routines
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*/
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octal(str)
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char *str;
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{
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int num;
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(void) sscanf(str, "%o", &num);
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return num;
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}
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hex(str)
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char *str;
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{
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int num;
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(void) sscanf(str+2, "%x", &num);
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return num;
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}
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