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/*
* (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
%option noyywrap nounput yylineno
%x CELLDATA
%x BYTESTRING
%x MEMRESERVE
PROPCHAR [a-zA-Z0-9,._+*#?-]
UNITCHAR [0-9a-f,]
WS [ \t\n]
REFCHAR ({PROPCHAR}|{UNITCHAR}|[/@])
%{
#include "dtc.h"
#include "dtc-parser.tab.h"
/*#define LEXDEBUG 1*/
#ifdef LEXDEBUG
#define DPRINT(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__)
#else
#define DPRINT(fmt, ...) do { } while (0)
#endif
%}
%%
\"[^"]*\" {
yylloc.first_line = yylineno;
DPRINT("String: %s\n", yytext);
yylval.data = data_copy_escape_string(yytext+1,
yyleng-2);
yylloc.first_line = yylineno;
return DT_STRING;
}
"/memreserve/" {
yylloc.first_line = yylineno;
DPRINT("Keyword: /memreserve/\n");
BEGIN(MEMRESERVE);
return DT_MEMRESERVE;
}
<MEMRESERVE>[0-9a-fA-F]+ {
yylloc.first_line = yylineno;
if (yyleng > 2*sizeof(yylval.addr)) {
fprintf(stderr, "Address value %s too large\n",
yytext);
}
yylval.addr = (u64) strtoull(yytext, NULL, 16);
DPRINT("Addr: %llx\n",
(unsigned long long)yylval.addr);
return DT_ADDR;
}
<MEMRESERVE>";" {
yylloc.first_line = yylineno;
DPRINT("/MEMRESERVE\n");
BEGIN(INITIAL);
return ';';
}
<CELLDATA>[bodh]# {
yylloc.first_line = yylineno;
if (*yytext == 'b')
yylval.cbase = 2;
else if (*yytext == 'o')
yylval.cbase = 8;
else if (*yytext == 'd')
yylval.cbase = 10;
else
yylval.cbase = 16;
DPRINT("Base: %d\n", yylval.cbase);
return DT_BASE;
}
<CELLDATA>[0-9a-fA-F]+ {
yylloc.first_line = yylineno;
yylval.str = strdup(yytext);
DPRINT("Cell: '%s'\n", yylval.str);
return DT_CELL;
}
<CELLDATA>">" {
yylloc.first_line = yylineno;
DPRINT("/CELLDATA\n");
BEGIN(INITIAL);
return '>';
}
<CELLDATA>\&{REFCHAR}* {
yylloc.first_line = yylineno;
DPRINT("Ref: %s\n", yytext+1);
yylval.str = strdup(yytext+1);
return DT_REF;
}
<BYTESTRING>[0-9a-fA-F]{2} {
yylloc.first_line = yylineno;
yylval.byte = strtol(yytext, NULL, 16);
DPRINT("Byte: %02x\n", (int)yylval.byte);
return DT_BYTE;
}
<BYTESTRING>"]" {
yylloc.first_line = yylineno;
DPRINT("/BYTESTRING\n");
BEGIN(INITIAL);
return ']';
}
, { /* Technically this is a valid property name,
but we'd rather use it as punctuation, so detect it
here in preference */
yylloc.first_line = yylineno;
DPRINT("Char (propname like): %c (\\x%02x)\n", yytext[0],
(unsigned)yytext[0]);
return yytext[0];
}
{PROPCHAR}+ {
yylloc.first_line = yylineno;
DPRINT("PropName: %s\n", yytext);
yylval.str = strdup(yytext);
return DT_PROPNAME;
}
{PROPCHAR}+(@{UNITCHAR}+)? {
yylloc.first_line = yylineno;
DPRINT("NodeName: %s\n", yytext);
yylval.str = strdup(yytext);
return DT_NODENAME;
}
[a-zA-Z_][a-zA-Z0-9_]*: {
yylloc.first_line = yylineno;
DPRINT("Label: %s\n", yytext);
yylval.str = strdup(yytext);
yylval.str[yyleng-1] = '\0';
return DT_LABEL;
}
<*>{WS}+ /* eat whitespace */
<*>"/*"([^*]|\*+[^*/])*\*+"/" {
yylloc.first_line = yylineno;
DPRINT("Comment: %s\n", yytext);
/* eat comments */
}
<*>"//".*\n /* eat line comments */
<*>. {
yylloc.first_line = yylineno;
switch (yytext[0]) {
case '<':
DPRINT("CELLDATA\n");
BEGIN(CELLDATA);
break;
case '[':
DPRINT("BYTESTRING\n");
BEGIN(BYTESTRING);
break;
default:
DPRINT("Char: %c (\\x%02x)\n", yytext[0],
(unsigned)yytext[0]);
break;
}
return yytext[0];
}
%%
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