Function parse_expr

libavcodec/eval.c:337–356

}

static AVExpr * parse_expr(Parser *p) {
    AVExpr * e;

    if(p->stack_index <= 0) //protect against stack overflows
        return NULL;
    p->stack_index--;

    e = parse_subexpr(p);

    while(*p->s == ';') {
        p->s++;
        e= new_eval_expr(e_last, 1, e, parse_subexpr(p));
        if (!e)
            return NULL;
    };

    p->stack_index++;

    return e;
}

static int verify_expr(AVExpr * e) {
    if (!e) return 0;