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PATH: usr / local / lib / node_modules / ghost-cli / node_modules / rxjs / src / internal / operators

import { Operator } from '../Operator';
import { async } from '../scheduler/async';
import { Observable } from '../Observable';
import { Subscriber } from '../Subscriber';
import { Subscription } from '../Subscription';
import { isScheduler } from '../util/isScheduler';
import { OperatorFunction, SchedulerAction, SchedulerLike } from '../types';

/* tslint:disable:max-line-length */
export function bufferTime<T>(bufferTimeSpan: number, scheduler?: SchedulerLike): OperatorFunction<T, T[]>;
export function bufferTime<T>(bufferTimeSpan: number, bufferCreationInterval: number | null | undefined, scheduler?: SchedulerLike): OperatorFunction<T, T[]>;
export function bufferTime<T>(bufferTimeSpan: number, bufferCreationInterval: number | null | undefined, maxBufferSize: number, scheduler?: SchedulerLike): OperatorFunction<T, T[]>;
/* tslint:enable:max-line-length */

/**
 * Buffers the source Observable values for a specific time period.
 *
 * <span class="informal">Collects values from the past as an array, and emits
 * those arrays periodically in time.</span>
 *
 * ![](bufferTime.png)
 *
 * Buffers values from the source for a specific time duration `bufferTimeSpan`.
 * Unless the optional argument `bufferCreationInterval` is given, it emits and
 * resets the buffer every `bufferTimeSpan` milliseconds. If
 * `bufferCreationInterval` is given, this operator opens the buffer every
 * `bufferCreationInterval` milliseconds and closes (emits and resets) the
 * buffer every `bufferTimeSpan` milliseconds. When the optional argument
 * `maxBufferSize` is specified, the buffer will be closed either after
 * `bufferTimeSpan` milliseconds or when it contains `maxBufferSize` elements.
 *
 * ## Examples
 *
 * Every second, emit an array of the recent click events
 *
 * ```ts
 * import { fromEvent } from 'rxjs';
 * import { bufferTime } from 'rxjs/operators';
 *
 * const clicks = fromEvent(document, 'click');
 * const buffered = clicks.pipe(bufferTime(1000));
 * buffered.subscribe(x => console.log(x));
 * ```
 *
 * Every 5 seconds, emit the click events from the next 2 seconds
 *
 * ```ts
 * import { fromEvent } from 'rxjs';
 * import { bufferTime } from 'rxjs/operators';
 *
 * const clicks = fromEvent(document, 'click');
 * const buffered = clicks.pipe(bufferTime(2000, 5000));
 * buffered.subscribe(x => console.log(x));
 * ```
 *
 * @see {@link buffer}
 * @see {@link bufferCount}
 * @see {@link bufferToggle}
 * @see {@link bufferWhen}
 * @see {@link windowTime}
 *
 * @param {number} bufferTimeSpan The amount of time to fill each buffer array.
 * @param {number} [bufferCreationInterval] The interval at which to start new
 * buffers.
 * @param {number} [maxBufferSize] The maximum buffer size.
 * @param {SchedulerLike} [scheduler=async] The scheduler on which to schedule the
 * intervals that determine buffer boundaries.
 * @return {Observable<T[]>} An observable of arrays of buffered values.
 * @method bufferTime
 * @owner Observable
 */
export function bufferTime<T>(bufferTimeSpan: number): OperatorFunction<T, T[]> {
  let length: number = arguments.length;

let scheduler: SchedulerLike = async;
  if (isScheduler(arguments[arguments.length - 1])) {
    scheduler = arguments[arguments.length - 1];
    length--;
  }

let bufferCreationInterval: number = null;
  if (length >= 2) {
    bufferCreationInterval = arguments[1];
  }

let maxBufferSize: number = Number.POSITIVE_INFINITY;
  if (length >= 3) {
    maxBufferSize = arguments[2];
  }

return function bufferTimeOperatorFunction(source: Observable<T>) {
    return source.lift(new BufferTimeOperator<T>(bufferTimeSpan, bufferCreationInterval, maxBufferSize, scheduler));
  };
}

class BufferTimeOperator<T> implements Operator<T, T[]> {
  constructor(private bufferTimeSpan: number,
              private bufferCreationInterval: number,
              private maxBufferSize: number,
              private scheduler: SchedulerLike) {
  }

call(subscriber: Subscriber<T[]>, source: any): any {
    return source.subscribe(new BufferTimeSubscriber(
      subscriber, this.bufferTimeSpan, this.bufferCreationInterval, this.maxBufferSize, this.scheduler
    ));
  }
}

class Context<T> {
  buffer: T[] = [];
  closeAction: Subscription;
}

interface DispatchCreateArg<T> {
  bufferTimeSpan: number;
  bufferCreationInterval: number;
  subscriber: BufferTimeSubscriber<T>;
  scheduler: SchedulerLike;
}

interface DispatchCloseArg<T> {
  subscriber: BufferTimeSubscriber<T>;
  context: Context<T>;
}

/**
 * We need this JSDoc comment for affecting ESDoc.
 * @ignore
 * @extends {Ignored}
 */
class BufferTimeSubscriber<T> extends Subscriber<T> {
  private contexts: Array<Context<T>> = [];
  private timespanOnly: boolean;

constructor(destination: Subscriber<T[]>,
              private bufferTimeSpan: number,
              private bufferCreationInterval: number,
              private maxBufferSize: number,
              private scheduler: SchedulerLike) {
    super(destination);
    const context = this.openContext();
    this.timespanOnly = bufferCreationInterval == null || bufferCreationInterval < 0;
    if (this.timespanOnly) {
      const timeSpanOnlyState = { subscriber: this, context, bufferTimeSpan };
      this.add(context.closeAction = scheduler.schedule(dispatchBufferTimeSpanOnly, bufferTimeSpan, timeSpanOnlyState));
    } else {
      const closeState = { subscriber: this, context };
      const creationState: DispatchCreateArg<T> = { bufferTimeSpan, bufferCreationInterval, subscriber: this, scheduler };
      this.add(context.closeAction = scheduler.schedule<DispatchCloseArg<T>>(dispatchBufferClose, bufferTimeSpan, closeState));
      this.add(scheduler.schedule<DispatchCreateArg<T>>(dispatchBufferCreation, bufferCreationInterval, creationState));
    }
  }

protected _next(value: T) {
    const contexts = this.contexts;
    const len = contexts.length;
    let filledBufferContext: Context<T>;
    for (let i = 0; i < len; i++) {
      const context = contexts[i];
      const buffer = context.buffer;
      buffer.push(value);
      if (buffer.length == this.maxBufferSize) {
        filledBufferContext = context;
      }
    }

if (filledBufferContext) {
      this.onBufferFull(filledBufferContext);
    }
  }

protected _error(err: any) {
    this.contexts.length = 0;
    super._error(err);
  }

protected _complete() {
    const { contexts, destination } = this;
    while (contexts.length > 0) {
      const context = contexts.shift();
      destination.next(context.buffer);
    }
    super._complete();
  }

/** @deprecated This is an internal implementation detail, do not use. */
  _unsubscribe() {
    this.contexts = null;
  }

protected onBufferFull(context: Context<T>) {
    this.closeContext(context);
    const closeAction = context.closeAction;
    closeAction.unsubscribe();
    this.remove(closeAction);

if (!this.closed && this.timespanOnly) {
      context = this.openContext();
      const bufferTimeSpan = this.bufferTimeSpan;
      const timeSpanOnlyState = { subscriber: this, context, bufferTimeSpan };
      this.add(context.closeAction = this.scheduler.schedule(dispatchBufferTimeSpanOnly, bufferTimeSpan, timeSpanOnlyState));
    }
  }

openContext(): Context<T> {
    const context: Context<T> = new Context<T>();
    this.contexts.push(context);
    return context;
  }

closeContext(context: Context<T>) {
    this.destination.next(context.buffer);
    const contexts = this.contexts;

const spliceIndex = contexts ? contexts.indexOf(context) : -1;
    if (spliceIndex >= 0) {
      contexts.splice(contexts.indexOf(context), 1);
    }
  }
}

function dispatchBufferTimeSpanOnly(this: SchedulerAction<any>, state: any) {
  const subscriber: BufferTimeSubscriber<any> = state.subscriber;

const prevContext = state.context;
  if (prevContext) {
    subscriber.closeContext(prevContext);
  }

if (!subscriber.closed) {
    state.context = subscriber.openContext();
    state.context.closeAction = this.schedule(state, state.bufferTimeSpan);
  }
}

function dispatchBufferCreation<T>(this: SchedulerAction<DispatchCreateArg<T>>, state: DispatchCreateArg<T>) {
  const { bufferCreationInterval, bufferTimeSpan, subscriber, scheduler } = state;
  const context = subscriber.openContext();
  const action = <SchedulerAction<DispatchCreateArg<T>>>this;
  if (!subscriber.closed) {
    subscriber.add(context.closeAction = scheduler.schedule<DispatchCloseArg<T>>(dispatchBufferClose, bufferTimeSpan, { subscriber, context }));
    action.schedule(state, bufferCreationInterval);
  }
}

function dispatchBufferClose<T>(arg: DispatchCloseArg<T>) {
  const { subscriber, context } = arg;
  subscriber.closeContext(context);
}

[-] toArray.ts [edit]
[-] window.ts [edit]
[-] retry.ts [edit]
[-] mergeAll.ts [edit]
[-] windowWhen.ts [edit]
[-] every.ts [edit]
[-] timeout.ts [edit]
[-] debounceTime.ts [edit]
[-] index.ts [edit]
[-] takeWhile.ts [edit]
[-] audit.ts [edit]
[-] reduce.ts [edit]
[-] mapTo.ts [edit]
[-] count.ts [edit]
[-] debounce.ts [edit]
[-] throwIfEmpty.ts [edit]
[-] auditTime.ts [edit]
[-] scan.ts [edit]
[-] switchAll.ts [edit]
[-] map.ts [edit]
[-] bufferCount.ts [edit]
[-] mergeScan.ts [edit]
[-] publish.ts [edit]
[-] min.ts [edit]
[+] ..
[-] publishReplay.ts [edit]
[-] bufferTime.ts [edit]
[-] share.ts [edit]
[-] repeat.ts [edit]
[-] distinct.ts [edit]
[-] concatMapTo.ts [edit]
[-] buffer.ts [edit]
[-] concatMap.ts [edit]
[-] max.ts [edit]
[-] partition.ts [edit]
[-] observeOn.ts [edit]
[-] bufferWhen.ts [edit]
[-] dematerialize.ts [edit]
[-] throttle.ts [edit]
[-] groupBy.ts [edit]
[-] withLatestFrom.ts [edit]
[-] exhaust.ts [edit]
[-] exhaustMap.ts [edit]
[-] retryWhen.ts [edit]
[-] zipAll.ts [edit]
[-] find.ts [edit]
[-] mergeMap.ts [edit]
[-] single.ts [edit]
[-] last.ts [edit]
[-] combineLatest.ts [edit]
[-] publishLast.ts [edit]
[-] pluck.ts [edit]
[-] pairwise.ts [edit]
[-] distinctUntilChanged.ts [edit]
[-] timeInterval.ts [edit]
[-] shareReplay.ts [edit]
[-] skipUntil.ts [edit]
[-] findIndex.ts [edit]
[-] windowToggle.ts [edit]
[-] startWith.ts [edit]
[-] timeoutWith.ts [edit]
[-] concat.ts [edit]
[-] materialize.ts [edit]
[-] timestamp.ts [edit]
[-] onErrorResumeNext.ts [edit]
[-] subscribeOn.ts [edit]
[-] takeUntil.ts [edit]
[-] skipLast.ts [edit]
[-] throttleTime.ts [edit]
[-] mergeMapTo.ts [edit]
[-] multicast.ts [edit]
[-] merge.ts [edit]
[-] takeLast.ts [edit]
[-] delayWhen.ts [edit]
[-] sampleTime.ts [edit]
[-] tap.ts [edit]
[-] take.ts [edit]
[-] sample.ts [edit]
[-] filter.ts [edit]
[-] skip.ts [edit]
[-] expand.ts [edit]
[-] publishBehavior.ts [edit]
[-] sequenceEqual.ts [edit]
[-] ignoreElements.ts [edit]
[-] catchError.ts [edit]
[-] endWith.ts [edit]
[-] refCount.ts [edit]
[-] windowCount.ts [edit]
[-] defaultIfEmpty.ts [edit]
[-] windowTime.ts [edit]
[-] switchMapTo.ts [edit]
[-] switchMap.ts [edit]
[-] delay.ts [edit]
[-] bufferToggle.ts [edit]
[-] repeatWhen.ts [edit]
[-] concatAll.ts [edit]
[-] first.ts [edit]
[-] zip.ts [edit]
[-] elementAt.ts [edit]
[-] skipWhile.ts [edit]
[-] race.ts [edit]
[-] finalize.ts [edit]
[-] combineAll.ts [edit]
[-] distinctUntilKeyChanged.ts [edit]
[-] isEmpty.ts [edit]