delete unnecessary X-> references inside class X member functions * lex.ll (lexical_feedback::is_keyword_token, lexical_feedback::handle_number, lexical_feedback::handle_string, lexical_feedback::handle_superclass_identifier, lexical_feedback::handle_meta_identifier, lexical_feedback::handle_identifier): Call push_token directly rather than through curr_lexer-> pointer. (lexical_feedback::display_token): Call current_token directly rather than through curr_lexer-> pointer.