ack/util/opt/scan.l
1994-06-24 11:31:16 +00:00

68 lines
1.4 KiB
Plaintext

%{
#ifndef NORCSID
static char rcsid2[] = "$Id$";
#endif
/*
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
* See the copyright notice in the ACK home directory, in the file "Copyright".
*
* Author: Hans van Staveren
*/
extern long atol();
%}
%%
\"[^"]*\" { strncpy(patid,yytext,sizeof(patid)); return(STRING); }
notreg return(NOTREG);
sfit return(SFIT);
ufit return(UFIT);
rotate return(ROTATE);
p return(PSIZE);
w return(WSIZE);
defined return(DEFINED);
samesign return(SAMESIGN);
rom return(ROM);
[a-zA-Z]{3} {
int m;
m = mlookup(yytext);
if (m==0) {
yyless(1);
return yytext[0];
} else {
yylval.y_int = m;
return(MNEM);
}
}
"&&" return(AND2);
"||" return(OR2);
"&" return(AND1);
"|" return(OR1);
"^" return(XOR1);
"+" return(ARPLUS);
"-" return(ARMINUS);
"*" return(ARTIMES);
"/" return(ARDIVIDE);
"%" return(ARMOD);
"==" return(CMPEQ);
"!=" return(CMPNE);
"<" return(CMPLT);
"<=" return(CMPLE);
">" return(CMPGT);
">=" return(CMPGE);
"!" return(NOT);
"~" return(COMP);
"<<" return(LSHIFT);
">>" return(RSHIFT);
[0-9]+ { long l= atol(yytext);
if (l>32767) yyerror("Number too big");
yylval.y_int= (int) l;
return(NUMBER);
}
[ \t] ;
. return(yytext[0]);
\n { lino++; return(yytext[0]); }
:[ \t]*\n[ \t]+ { lino++; return(':'); }
^"# "[0-9]+.*\n { lino=atoi(yytext+2); }
^\#.*\n { lino++; }