180 lines
3.9 KiB
Text
180 lines
3.9 KiB
Text
/*
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* (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
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*
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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%option noyywrap nounput yylineno
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%x CELLDATA
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%x BYTESTRING
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%x MEMRESERVE
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PROPCHAR [a-zA-Z0-9,._+*#?-]
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UNITCHAR [0-9a-f,]
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WS [ \t\n]
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REFCHAR ({PROPCHAR}|{UNITCHAR}|[/@])
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%{
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#include "dtc.h"
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#include "dtc-parser.tab.h"
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/*#define LEXDEBUG 1*/
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#ifdef LEXDEBUG
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#define DPRINT(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__)
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#else
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#define DPRINT(fmt, ...) do { } while (0)
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#endif
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%}
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%%
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\"[^"]*\" {
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yylloc.first_line = yylineno;
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DPRINT("String: %s\n", yytext);
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yylval.data = data_copy_escape_string(yytext+1,
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yyleng-2);
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yylloc.first_line = yylineno;
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return DT_STRING;
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}
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"/memreserve/" {
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yylloc.first_line = yylineno;
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DPRINT("Keyword: /memreserve/\n");
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BEGIN(MEMRESERVE);
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return DT_MEMRESERVE;
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}
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<MEMRESERVE>[0-9a-fA-F]+ {
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yylloc.first_line = yylineno;
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if (yyleng > 2*sizeof(yylval.addr)) {
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fprintf(stderr, "Address value %s too large\n",
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yytext);
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}
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yylval.addr = (u64) strtoull(yytext, NULL, 16);
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DPRINT("Addr: %llx\n",
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(unsigned long long)yylval.addr);
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return DT_ADDR;
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}
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<MEMRESERVE>";" {
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yylloc.first_line = yylineno;
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DPRINT("/MEMRESERVE\n");
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BEGIN(INITIAL);
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return ';';
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}
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<CELLDATA>[0-9a-fA-F]+ {
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yylloc.first_line = yylineno;
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if (yyleng > 2*sizeof(yylval.cval)) {
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fprintf(stderr,
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"Cell value %s too long\n", yytext);
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}
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yylval.cval = strtoul(yytext, NULL, 16);
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DPRINT("Cell: %x\n", yylval.cval);
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return DT_CELL;
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}
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<CELLDATA>">" {
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yylloc.first_line = yylineno;
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DPRINT("/CELLDATA\n");
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BEGIN(INITIAL);
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return '>';
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}
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<CELLDATA>\&{REFCHAR}* {
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yylloc.first_line = yylineno;
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DPRINT("Ref: %s\n", yytext+1);
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yylval.str = strdup(yytext+1);
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return DT_REF;
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}
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<BYTESTRING>[0-9a-fA-F]{2} {
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yylloc.first_line = yylineno;
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yylval.byte = strtol(yytext, NULL, 16);
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DPRINT("Byte: %02x\n", (int)yylval.byte);
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return DT_BYTE;
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}
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<BYTESTRING>"]" {
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yylloc.first_line = yylineno;
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DPRINT("/BYTESTRING\n");
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BEGIN(INITIAL);
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return ']';
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}
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{PROPCHAR}+ {
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yylloc.first_line = yylineno;
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DPRINT("PropName: %s\n", yytext);
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yylval.str = strdup(yytext);
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return DT_PROPNAME;
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}
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{PROPCHAR}+(@{UNITCHAR}+)? {
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yylloc.first_line = yylineno;
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DPRINT("NodeName: %s\n", yytext);
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yylval.str = strdup(yytext);
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return DT_NODENAME;
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}
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[a-zA-Z_][a-zA-Z0-9_]*: {
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yylloc.first_line = yylineno;
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DPRINT("Label: %s\n", yytext);
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yylval.str = strdup(yytext);
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yylval.str[yyleng-1] = '\0';
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return DT_LABEL;
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}
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<*>{WS}+ /* eat whitespace */
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<*>"/*"([^*]|\*+[^*/])*\*+"/" {
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yylloc.first_line = yylineno;
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DPRINT("Comment: %s\n", yytext);
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/* eat comments */
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}
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<*>"//".*\n /* eat line comments */
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<*>. {
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yylloc.first_line = yylineno;
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switch (yytext[0]) {
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case '<':
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DPRINT("CELLDATA\n");
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BEGIN(CELLDATA);
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break;
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case '[':
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DPRINT("BYTESTRING\n");
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BEGIN(BYTESTRING);
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break;
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default:
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DPRINT("Char: %c (\\x%02x)\n", yytext[0],
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(unsigned)yytext[0]);
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break;
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}
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return yytext[0];
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}
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%%
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