%{
#include <string.h>
#include "lists.h"
#include "val.h"
#include "grammaire.h"

%}

%option noyywrap 
%option yylineno

CHIFFRE [0-9]
LETTRE  [a-zA-Z]
OP      [+=]
PAROUV  "("
PARFER  ")"
IDENT   {LETTRE}({CHIFFRE}|{LETTRE})*
NOMBRE  {CHIFFRE}+
BLANCS  ([ \t\n])+

%%
{BLANCS}   {}
let {return LET;}
in {return IN;}
if {return IF;}
then {return THEN;}
else {return ELSE;}
"+"      {return PLUS;}
=      {return EQ;}
true {yylval.str = strdup(yytext);return CONST;}
false {yylval.str = strdup(yytext);return CONST;}
{PAROUV}     {return LPAR;}
{PARFER}     {return RPAR;}
{IDENT}   {yylval.str = strdup(yytext); return ID;}
{NOMBRE}  {yylval.str = strdup(yytext); return CONST;}

. {yyerror("erreur d'analyse lexicale");exit(EXIT_FAILURE);}
%%