Lyndon Jetten
fda2c306b5
FaC: Das alte Flag von Terminen, die in die Zeiterfassung übernommen worden sind, wird ebenfalls berücksichtigt.
71 lines
2.0 KiB
JavaScript
71 lines
2.0 KiB
JavaScript
//
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// vargs.js
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//
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// variable argument handling for functions taking a callback
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//
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// usage:
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//
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// var Args = new("vargs").Constructor;
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//
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// function (/* [arg1, arg2, ...][,callback] */) {
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// var args = new(Args)(arguments);
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//
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// args.first; // first argument
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// args.last; // last argument before callback
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// args.callback; // callback argument, or an empty function
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// args.all; // all arguments except callback
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// args.length; // number of arguments, not including callback
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//
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// args.callbackGiven() // returns true or false
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// args.at(-1) // last argument, including callback
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// args.array // all arguments, including callback
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// }
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//
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exports.Constructor = function Vargs(arguments) {
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this.array = Array.prototype.slice.call(arguments);
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this.__defineGetter__('length', function () {
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if (this.callbackGiven()) {
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return this.array.length - 1;
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} else {
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return this.array.length;
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}
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});
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this.__defineGetter__('all', function () {
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if (this.callbackGiven()) {
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return this.array.slice(0, -1);
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} else {
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return this.array;
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}
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});
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this.__defineGetter__('last', function () {
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if (typeof(this.at(-1)) === 'function') {
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return this.at(-2);
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} else {
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return this.at(-1);
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}
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});
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this.__defineGetter__('first', function () {
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return this.array[0];
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});
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this.callback = this.callbackGiven() ? this.at(-1)
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: function () {};
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};
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exports.Constructor.prototype = {
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callbackGiven: function () {
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return typeof(this.at(-1)) === 'function';
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},
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at: function (n) {
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if (n < 0) {
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return this.array[this.array.length + n];
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} else {
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return this.array[n];
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}
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}
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};
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exports.Constructor.last = function (args) {
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return args[args.length - 1];
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};
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