static int
iter_minmax(strm_stream* strm, strm_value data)
{
struct minmax_data* d = strm->data;
strm_value e;
double num;
if (!strm_nil_p(d->func)) {
if (strm_funcall(strm, d->func, 1, &data, &e) == STRM_NG) {
return STRM_NG;
}
}
else {
e = data;
}
num = strm_value_float(e);
if (d->start) {
d->start = FALSE;
d->num = num;
d->data = data;
}
else if (d->min) { /* min */
if (d->num > num) {
d->num = num;
d->data = data;
}
}
else { /* max */
if (d->num < num) {
d->num = num;
d->data = data;
}
}
return STRM_OK;
}
static int
exec_uniq(strm_stream* strm, int argc, strm_value* args, strm_value* ret)
{
struct uniq_data* d;
strm_value func = strm_nil_value();
strm_get_args(strm, argc, args, "|v", &func);
d = malloc(sizeof(*d));
if (!d) return STRM_NG;
d->last = strm_nil_value();
d->func = func;
d->init = FALSE;
*ret = strm_stream_value(strm_stream_new(strm_filter,
strm_nil_p(func) ? iter_uniq : iter_uniqf,
NULL, (void*)d));
return STRM_OK;
}
void
strm_emit(strm_task* task, strm_value data, strm_callback func)
{
strm_task *d = task->dst;
int tid = task->tid;
if (!strm_nil_p(data)) {
while (d) {
task_push(tid, strm_queue_task(d, d->start_func, data));
d = d->nextd;
tid++;
}
}
if (func) {
strm_task_push(strm_queue_task(task, func, strm_nil_value()));
}
}
