/**
* cnodes
*
* A representation-agnostic library to define and execute nodes based processes
* License: MIT
* Author: Marco Jacovone
* Year: 2020-2021
*/
import { Node } from "../../core/node.mjs";
import { InputSocket, OutputSocket } from "../../core/socket.mjs";
import { Types } from "../../core/type.mjs";
/**
* This class implements a functional node for pick
* a single value from an array
*/
export class FAGet extends Node {
// Provide a node instance
static instance = () => new FAGet();
/**
* Construct a new FAGet node
*/
constructor() {
super("FAGet");
// The node is pure functional
this.functional = true;
// Default to two numeric inputs
this.inputs = [
new InputSocket("Array", this, Types.ARRAY, 0),
new InputSocket("Index", this, Types.NUMBER, 0),
];
this.outputs = [new OutputSocket("Val", this, Types.ANY, 0, false)];
this.prev = null;
this.nexts = [];
}
/**
* Clone this node
* @param {Function} factory The factory class function
*/
clone(factory = FAGet.instance) {
return super.clone(factory);
}
/**
* The process override
*/
async process() {
await this.evaluateInputs();
let arr = this.input("Array").value;
let index = parseInt(this.input("Index").value, 10);
if (!Array.isArray(arr)) {
// TODO: Manage error
} else {
this.output("Val").value = arr[index];
}
}
}