%{
#include <stdlib.h>
#include "calc.tab.h"
#include "calculator.h"
%}
%option outfile="calc.yy.cpp" header-file="calc.yy.h"
%option case-sensitive
%option array

D  [0-9]
E  [Ee][+-]?{D}+

%%
pi                  { return MATHPI; }
sin                 { return FCESIN; }
cos                 { return FCECOS; }
exp                 { return FCEEXP; }
log                 { return FCELOG; }
[a-zA-Z]+           { yylval.svalue = strdup (yytext); return IDENT;   }
{D}+                { yylval.svalue = strdup (yytext); return INTEGER; }
{D}*\.{D}+({E})?    { yylval.svalue = strdup (yytext); return DOUBLE;  }
{D}*\.{D}*({E})?    { yylval.svalue = strdup (yytext); return DOUBLE;  }
\{.*\}
[ \t]+         /* ignored */
\n             { return ENDLINE; }
.              { return yytext[0];  }
%%
void prevent_unused (void) {
    (void) yyunput;
/*  (void) input; */
}