struct if_then_else *if_then_else = xcalloc(sizeof(struct if_then_else), 1);
if_then_else->str = atomv->atom->u.if_then_else.str;
if_then_else->cmp_status = atomv->atom->u.if_then_else.cmp_status;
push_stack_element(&state->stack);
struct if_then_else *if_then_else = xcalloc(sizeof(struct if_then_else), 1);
if_then_else->str = atomv->atom->u.if_then_else.str;
if_then_else->cmp_status = atomv->atom->u.if_then_else.cmp_status;
push_stack_element(&state->stack);