proper eof handling

src/lexer.l

@@ -23,6 +23,7 @@ in              { return yy::parser::token::TOK_KW_IF;}
 \"              { yymore(); BEGIN(STRING); }
 [0-9]+          { yylval->as<std::string>() = yytext; return yy::parser::token::TOK_NUMBER; }
 [_a-zA-Z]+      { yylval->as<std::string>() = yytext; return yy::parser::token::TOK_IDENTIFIER; }
+<<EOF>>         { return yy::parser::token::TOK_EOF; }
 .               { /* the last rule, ignore anything else (there should be nothing) */}
 
 <STRING>\"\"    { yymore(); }

src/main.cpp

@@ -13,9 +13,9 @@ void dump_tokens(Scanner &scanner)
     while (true)
     {
         int tok = scanner.lex(&lval);
-        if (tok == Parser::token::TOK_YYEOF)
+        if (tok == Parser::token::TOK_EOF)
         {
-            std::cout << "NEWLINE\nEOF";
+            std::cout << Parser::symbol_name(static_cast<kind>(tok));
             break;
         }