40 lines
1.7 KiB
Plaintext
40 lines
1.7 KiB
Plaintext
import { operate } from '../util/lift';
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import { createOperatorSubscriber } from './OperatorSubscriber';
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import { innerFrom } from '../observable/innerFrom';
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export function sequenceEqual(compareTo, comparator) {
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if (comparator === void 0) { comparator = function (a, b) { return a === b; }; }
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return operate(function (source, subscriber) {
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var aState = createState();
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var bState = createState();
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var emit = function (isEqual) {
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subscriber.next(isEqual);
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subscriber.complete();
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};
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var createSubscriber = function (selfState, otherState) {
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var sequenceEqualSubscriber = createOperatorSubscriber(subscriber, function (a) {
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var buffer = otherState.buffer, complete = otherState.complete;
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if (buffer.length === 0) {
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complete ? emit(false) : selfState.buffer.push(a);
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}
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else {
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!comparator(a, buffer.shift()) && emit(false);
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}
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}, function () {
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selfState.complete = true;
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var complete = otherState.complete, buffer = otherState.buffer;
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complete && emit(buffer.length === 0);
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sequenceEqualSubscriber === null || sequenceEqualSubscriber === void 0 ? void 0 : sequenceEqualSubscriber.unsubscribe();
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});
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return sequenceEqualSubscriber;
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};
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source.subscribe(createSubscriber(aState, bState));
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innerFrom(compareTo).subscribe(createSubscriber(bState, aState));
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});
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}
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function createState() {
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return {
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buffer: [],
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complete: false,
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};
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}
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//# sourceMappingURL=sequenceEqual.js.map |