value *valForStructElem (struct ast *, struct ast *);
value *valForCastAggr (struct ast *, sym_link *, struct ast *, int);
value *valForCastArr (struct ast * , sym_link *);
value *valForStructElem (struct ast *, struct ast *);
value *valForCastAggr (struct ast *, sym_link *, struct ast *, int);
value *valForCastArr (struct ast * , sym_link *);