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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
var { setTimeout } = require("../timer");
/**
* Takes a function and returns a wrapped one instead, calling which will call
* original function in the next turn of event loop. This is basically utility
* to do `setTimeout(function() { ... }, 0)`, with a difference that returned
* function is reused, instead of creating a new one each time. This also allows
* to use this functions as event listeners.
*/
function Enqueued(callee) {
return function enqueued()
setTimeout(invoke, 0, callee, arguments, this);
}
exports.Enqueued = Enqueued;
/**
* Invokes `callee` by passing `params` as an arguments and `self` as `this`
* pseudo-variable. Returns value that is returned by a callee.
* @param {Function} callee
* Function to invoke.
* @param {Array} params
* Arguments to invoke function with.
* @param {Object} self
* Object to be passed as a `this` pseudo variable.
*/
function invoke(callee, params, self) callee.apply(self, params);
exports.invoke = invoke;
/**
* Curries a function with the arguments given.
*
* @param {Function} fn
* The function to curry
*
* @returns The function curried
*/
function curry(fn) {
if (typeof fn !== "function")
throw new TypeError(String(fn) + " is not a function");
let args = Array.slice(arguments, 1);
return function() fn.apply(this, args.concat(Array.slice(arguments)));
}
exports.curry = curry;
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