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|
%option noinput
%option nounput
%option noyywrap
%option yylineno
%{
#include <err.h>
#include <stdlib.h>
#include "parser.h"
#include "pinocchio.h"
#define YY_USER_ACTION yylloc.first_line = yylloc.last_line = yylineno;
extern const char *current_file;
%}
%%
¬|! { return NOT; }
∧|&& { return AND; }
∨|\|\| { return OR; }
⊻|⊕|~ { return XOR; }
⇒|=> { return IMPL; }
\<=>|⇔ { return EQUIV; }
\( { return OPAR; }
\) { return CPAR; }
\n { return EOL; }
[a-zA-Z] {
yylval.ch = *yytext;
return IDENT;
}
[ \t]+ ;
. {
user_error("%s:%d: Unrecognized character ‘%c’",
current_file, yylineno, *yytext);
}
%%
|
