优化

‘liusuyi’

2023-10-21 ae92b6823499cfab77201b4033922fa373fb37a3

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import { Subscriber } from '../Subscriber';
export function bufferCount(bufferSize, startBufferEvery = null) {
    return function bufferCountOperatorFunction(source) {
        return source.lift(new BufferCountOperator(bufferSize, startBufferEvery));
    };
}
class BufferCountOperator {
    constructor(bufferSize, startBufferEvery) {
        this.bufferSize = bufferSize;
        this.startBufferEvery = startBufferEvery;
        if (!startBufferEvery || bufferSize === startBufferEvery) {
            this.subscriberClass = BufferCountSubscriber;
        }
        else {
            this.subscriberClass = BufferSkipCountSubscriber;
        }
    }
    call(subscriber, source) {
        return source.subscribe(new this.subscriberClass(subscriber, this.bufferSize, this.startBufferEvery));
    }
}
class BufferCountSubscriber extends Subscriber {
    constructor(destination, bufferSize) {
        super(destination);
        this.bufferSize = bufferSize;
        this.buffer = [];
    }
    _next(value) {
        const buffer = this.buffer;
        buffer.push(value);
        if (buffer.length == this.bufferSize) {
            this.destination.next(buffer);
            this.buffer = [];
        }
    }
    _complete() {
        const buffer = this.buffer;
        if (buffer.length > 0) {
            this.destination.next(buffer);
        }
        super._complete();
    }
}
class BufferSkipCountSubscriber extends Subscriber {
    constructor(destination, bufferSize, startBufferEvery) {
        super(destination);
        this.bufferSize = bufferSize;
        this.startBufferEvery = startBufferEvery;
        this.buffers = [];
        this.count = 0;
    }
    _next(value) {
        const { bufferSize, startBufferEvery, buffers, count } = this;
        this.count++;
        if (count % startBufferEvery === 0) {
            buffers.push([]);
        }
        for (let i = buffers.length; i--;) {
            const buffer = buffers[i];
            buffer.push(value);
            if (buffer.length === bufferSize) {
                buffers.splice(i, 1);
                this.destination.next(buffer);
            }
        }
    }
    _complete() {
        const { buffers, destination } = this;
        while (buffers.length > 0) {
            let buffer = buffers.shift();
            if (buffer.length > 0) {
                destination.next(buffer);
            }
        }
        super._complete();
    }
}
//# sourceMappingURL=bufferCount.js.map