%{
#include <stdio.h>
#include <string.h>

int line = 1;
int token_count = 0;
%}

%option noyywrap

DIGIT       [0-9]
LETTER      [a-zA-Z_]
WHITESPACE  [ \t\r]

%%

\n                  { line++; }
{WHITESPACE}+       { /* Ignora spatiile */ }

"if"               { printf("Keyword: IF (linia %d)\n", line); token_count++; }
"else"             { printf("Keyword: ELSE (linia %d)\n", line); token_count++; }
"while"            { printf("Keyword: WHILE (linia %d)\n", line); token_count++; }
"for"              { printf("Keyword: FOR (linia %d)\n", line); token_count++; }
"return"           { printf("Keyword: RETURN (linia %d)\n", line); token_count++; }
"break"            { printf("Keyword: BREAK (linia %d)\n", line); token_count++; }
"continue"         { printf("Keyword: CONTINUE (linia %d)\n", line); token_count++; }

"int"              { printf("Tip de date: INT (linia %d)\n", line); token_count++; }
"float"            { printf("Tip de date: FLOAT (linia %d)\n", line); token_count++; }
"char"             { printf("Tip de date: CHAR (linia %d)\n", line); token_count++; }
"bool"             { printf("Tip de date: BOOL (linia %d)\n", line); token_count++; }

{DIGIT}+           {
    printf("Intreg: %s (linia %d)\n", yytext, line);
    token_count++;
}

{DIGIT}+"."{DIGIT}+ {
    printf("Real: %s (linia %d)\n", yytext, line);
    token_count++;
}

[a-zA-Z_][a-zA-Z0-9_]* {
    printf("Identificator: %s (linia %d)\n", yytext, line);
    token_count++;
}

"+"                { printf("Operator aritmetic: + (linia %d)\n", line); token_count++; }
"-"                { printf("Operator aritmetic: - (linia %d)\n", line); token_count++; }
"*"                { printf("Operator aritmetic: * (linia %d)\n", line); token_count++; }
"/"                { printf("Operator aritmetic: / (linia %d)\n", line); token_count++; }
"%"                { printf("Operator aritmetic: modulo %% (linia %d)\n", line); token_count++; }

"="                { printf("Operator de atribuire: = (linia %d)\n", line); token_count++; }
"+="               { printf("Operator de atribuire: += (linia %d)\n", line); token_count++; }
"-="               { printf("Operator de atribuire: -= (linia %d)\n", line); token_count++; }
"*="               { printf("Operator de atribuire: *= (linia %d)\n", line); token_count++; }
"/="               { printf("Operator de atribuire: /= (linia %d)\n", line); token_count++; }

"=="               { printf("Operator de comparatie: == (linia %d)\n", line); token_count++; }
"!="               { printf("Operator de comparatie: != (linia %d)\n", line); token_count++; }
"<"                { printf("Operator de comparatie: < (linia %d)\n", line); token_count++; }
">"                { printf("Operator de comparatie: > (linia %d)\n", line); token_count++; }
"<="               { printf("Operator de comparatie: <= (linia %d)\n", line); token_count++; }
">="               { printf("Operator de comparatie: >= (linia %d)\n", line); token_count++; }

"&&"               { printf("Operator logic: AND (linia %d)\n", line); token_count++; }
"||"               { printf("Operator logic: OR (linia %d)\n", line); token_count++; }
"!"                { printf("Operator logic: NOT (linia %d)\n", line); token_count++; }

"("                { printf("Simbol: Paranteza deschisa ( (linia %d)\n", line); token_count++; }
")"                { printf("Simbol: Paranteza inchisa ) (linia %d)\n", line); token_count++; }
"{"                { printf("Simbol: Acolada deschisa { (linia %d)\n", line); token_count++; }
"}"                { printf("Simbol: Acolada inchisa } (linia %d)\n", line); token_count++; }
"["                { printf("Simbol: Paranteza patrata deschisa [ (linia %d)\n", line); token_count++; }
"]"                { printf("Simbol: Paranteza patrata inchisa ] (linia %d)\n", line); token_count++; }
";"                { printf("Simbol: Punct si virgula ; (linia %d)\n", line); token_count++; }
","                { printf("Simbol: Virgula , (linia %d)\n", line); token_count++; }

\"([^\\\"]|\\.)*\"  {
    printf("Litera sir: %s (linia %d)\n", yytext, line);
    token_count++;
}

"//".*             { /* Comentariu pe o singura linie - ignorat */ }
"/*"(.|\n)*"*/"    { /* Comentariu pe mai multe linii - ignorat */ }

.                  {
    printf("EROARE LEXICALA la linia %d: caracter neasteptat '%s'\n",
           line, yytext);
}

%%

int main(int argc, char **argv) {
    if(argc > 1) {
        if(!(yyin = fopen(argv[1], "r"))) {
            perror(argv[1]);
            return 1;
        }
    }

    yylex();

    printf("\nRaport:\n");
    printf("Total linii procesate: %d\n", line);
    printf("Total token-uri recunoscute: %d\n", token_count);

    return 0;
}