Queue "prototyp" fpr MJS

prototypes.js

load("api_config.js");

let protQueue = {
	_queue: [],
	isEmpty: function() {
		return (this._queue.length === 0);
	},
	add: function(obj) {
		this._queue.push(obj);
	},
	count: function() {
		return this._queue.length;
	},
	first: function(remove) {
		if (this.isEmpty()) {
			return {};
		} else {
			let elem = this._queue[0];
			if (remove) {
				this._queue.splice(0, 1);
			}
			return elem;
		}
	},
	last: function(remove) {
		if (this.isEmpty()) {
			return {};
		} else {
			let elem = this._queue[this._queue.length - 1];
			if (remove) {
				this._queue.splice(this._queue.length - 1, 1);
			}
			return elem;
		}
	},
	print: function() {
		for (let i = 0; i < this._queue.length; i++) {
			let msg = 'Queue entry - JSON: ' + JSON.stringify(this._queue[i]);
			Log.debug(msg);
		}
	},
	get: function() {
		return this._queue;
	},
	set: function(value) {
		this._queue = value;
	}
};