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Parallel

Asynchronous array handle

Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://update.greasyfork.org/scripts/380535/680853/Parallel.js 

// ==UserScript==
// @name         Parallel
// @namespace    http://tampermonkey.net/
// @version      0.2
// @description  Asynchronous array handle
// @author       You
// ==/UserScript==

class Parallel{
    constructor(count=3){
        this.count=3
    }

    partial(data,count){
        let r=[];
        let l=data.length;
        let dataPerThread=parseInt(l/count);
        if (dataPerThread==0){
            dataPerThread=1;
        }
        for (let i=0;i<l;i+=dataPerThread){
            let to=Math.min(i+dataPerThread,l);
            let d=data.slice(i,to);
            r.push(d);
        }
        return r;
    }

    async run(data,action,isReturn=false){
        let results=[];
        for (let x in data){
			let r=action(data[x]);
			if (r instanceof Promise){
				r=await r;
			}
            if (isReturn){
                results.push(r);
            }
        }
        if (isReturn){
            return results;
        }
    }

    async forEach(data,action){
        data=this.partial(data,this.count);
        let threads=[];
        for (let i in data){
            let d=data[i];
            threads.unshift(this.run(d,action));
        }
        for (let x in threads){
            await threads[x];
        }
    }

    async map(data,action){
        data=this.partial(data,this.count);
        let threads=[];
        for (let i in data){
            let d=data[i];
            threads.unshift(this.run(d,action,true));
        }
        let results=[];
        for (let x in threads){
            results=results.concat(await threads[x]);
        }
        return results;
    }
}