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

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

%option noyywrap

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

%%

{WHITESPACE}+       { if(yytext[0] == '\n') line++; /* Ignora spatiile */ }

"char"             { printf("TYPE_CHAR: %s (linia %d)\n", yytext, line); token_count++; }
"double"           { printf("TYPE_DOUBLE: %s (linia %d)\n", yytext, line); token_count++; }
"else"             { printf("ELSE: %s (linia %d)\n", yytext, line); token_count++; }
"if"               { printf("IF: %s (linia %d)\n", yytext, line); token_count++; }
"int"              { printf("TYPE_INT: %s (linia %d)\n", yytext, line); token_count++; }
"return"           { printf("RETURN: %s (linia %d)\n", yytext, line); token_count++; }
"struct"           { printf("STRUCT: %s (linia %d)\n", yytext, line); token_count++; }
"void"             { printf("VOID: %s (linia %d)\n", yytext, line); token_count++; }
"while"            { printf("WHILE: %s (linia %d)\n", yytext, line); token_count++; }

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

{DIGIT}+("."{DIGIT}+)?([eE][+-]?{DIGIT}+)? |
{DIGIT}+"."{DIGIT}+ {
    printf("DOUBLE: %s (linia %d)\n", yytext, line);
    token_count++;
}

'[^']'             { printf("CHAR: %s (linia %d)\n", yytext, line); token_count++; }
\"[^\"]*\"         { printf("STRING: %s (linia %d)\n", yytext, line); token_count++; }

","                { printf("COMMA: %s (linia %d)\n", yytext, line); token_count++; }
";"                { printf("SEMICOLON: %s (linia %d)\n", yytext, line); token_count++; }
"("                { printf("LPAR: %s (linia %d)\n", yytext, line); token_count++; }
")"                { printf("RPAR: %s (linia %d)\n", yytext, line); token_count++; }
"["                { printf("LBRACKET: %s (linia %d)\n", yytext, line); token_count++; }
"]"                { printf("RBRACKET: %s (linia %d)\n", yytext, line); token_count++; }
"{"                { printf("LACC: %s (linia %d)\n", yytext, line); token_count++; }
"}"                { printf("RACC: %s (linia %d)\n", yytext, line); token_count++; }
<<EOF>>            { printf("END: EOF (linia %d)\n", line); token_count++; return 0; }

"+"                { printf("ADD: %s (linia %d)\n", yytext, line); token_count++; }
"-"                { printf("SUB: %s (linia %d)\n", yytext, line); token_count++; }
"*"                { printf("MUL: %s (linia %d)\n", yytext, line); token_count++; }
"/"                { printf("DIV: %s (linia %d)\n", yytext, line); token_count++; }
"."                { printf("DOT: %s (linia %d)\n", yytext, line); token_count++; }
"&&"               { printf("AND: %s (linia %d)\n", yytext, line); token_count++; }
"||"               { printf("OR: %s (linia %d)\n", yytext, line); token_count++; }
"!"                { printf("NOT: %s (linia %d)\n", yytext, line); token_count++; }
"="                { printf("ASSIGN: %s (linia %d)\n", yytext, line); token_count++; }
"=="               { printf("EQUAL: %s (linia %d)\n", yytext, line); token_count++; }
"!="               { printf("NOTEQ: %s (linia %d)\n", yytext, line); token_count++; }
"<"                { printf("LESS: %s (linia %d)\n", yytext, line); token_count++; }
"<="               { printf("LESSEQ: %s (linia %d)\n", yytext, line); token_count++; }
">"                { printf("GREATER: %s (linia %d)\n", yytext, line); token_count++; }
">="               { printf("GREATEREQ: %s (linia %d)\n", yytext, line); token_count++; }

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

"//"[^\n\r\0]*     { /* Ignora comentariile pe o linie */ }

.                  {
    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;
}