58 lines
No EOL
2.2 KiB
JavaScript
58 lines
No EOL
2.2 KiB
JavaScript
import { innerFrom } from '../observable/innerFrom';
|
|
import { executeSchedule } from '../util/executeSchedule';
|
|
import { createOperatorSubscriber } from './OperatorSubscriber';
|
|
export function mergeInternals(source, subscriber, project, concurrent, onBeforeNext, expand, innerSubScheduler, additionalFinalizer) {
|
|
const buffer = [];
|
|
let active = 0;
|
|
let index = 0;
|
|
let isComplete = false;
|
|
const checkComplete = () => {
|
|
if (isComplete && !buffer.length && !active) {
|
|
subscriber.complete();
|
|
}
|
|
};
|
|
const outerNext = (value) => (active < concurrent ? doInnerSub(value) : buffer.push(value));
|
|
const doInnerSub = (value) => {
|
|
expand && subscriber.next(value);
|
|
active++;
|
|
let innerComplete = false;
|
|
innerFrom(project(value, index++)).subscribe(createOperatorSubscriber(subscriber, (innerValue) => {
|
|
onBeforeNext === null || onBeforeNext === void 0 ? void 0 : onBeforeNext(innerValue);
|
|
if (expand) {
|
|
outerNext(innerValue);
|
|
}
|
|
else {
|
|
subscriber.next(innerValue);
|
|
}
|
|
}, () => {
|
|
innerComplete = true;
|
|
}, undefined, () => {
|
|
if (innerComplete) {
|
|
try {
|
|
active--;
|
|
while (buffer.length && active < concurrent) {
|
|
const bufferedValue = buffer.shift();
|
|
if (innerSubScheduler) {
|
|
executeSchedule(subscriber, innerSubScheduler, () => doInnerSub(bufferedValue));
|
|
}
|
|
else {
|
|
doInnerSub(bufferedValue);
|
|
}
|
|
}
|
|
checkComplete();
|
|
}
|
|
catch (err) {
|
|
subscriber.error(err);
|
|
}
|
|
}
|
|
}));
|
|
};
|
|
source.subscribe(createOperatorSubscriber(subscriber, outerNext, () => {
|
|
isComplete = true;
|
|
checkComplete();
|
|
}));
|
|
return () => {
|
|
additionalFinalizer === null || additionalFinalizer === void 0 ? void 0 : additionalFinalizer();
|
|
};
|
|
}
|
|
//# sourceMappingURL=mergeInternals.js.map
|