improve lexer tokens printing

alib2cli/src/lexer/Lexer.h

@@ -129,6 +129,10 @@ public:
 		operator std::string ( ) const {
 			std::string res = Lexer::tokenTypeToString ( m_type );
+
+			if ( m_value.empty ( ) )
+				return res;
+
 			switch ( m_type ) {
 			case TokenType::IDENTIFIER :
 				return res + ": " + m_value;