Editing Slice In Emit

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Preparation code

Preparation code HTML (this will be inserted in the <body> of a valid HTML5 document in standards mode) (useful when testing DOM operations or including libraries)

Include JavaScript libraries as follows: <script src="//cdn.ext/library.js"></script>

Define setup for all tests (variables, functions, arrays or other objects that will be used in the tests) (runs before each clocked test loop, outside of the timed code region) (e.g. define local test variables, reset global variables, clear canvas, etc.) (see FAQ)

var subscriber = {
  fooNoArguments: function() {},
  fooOneArgument: function(foo) {},
  fooMultipleArguments: function(foo, bar, baz) {},
};

function Subscription(subscriber, message) {
  this.subscriber = subscriber;
  this.message = message;
}

var arraySlice = Array.prototype.slice;

var EmitterSlice = {
  emit: function(event, data1, data2, data3, data4) {
    var eventSubscriptions = this.subscriptionsFor(event);
    var length, idx;
    var subscription, subscriber, handler;
    var args;

if (this[event]) {
      if (data1 === undefined) {
        this[event]();
      } else if (data2 === undefined) {
        this[event](data1);
      } else if (data3 === undefined) {
        this[event](data1, data2);
      } else if (data4 === undefined) {
        this[event](data1, data2, data3);
      } else {
        args = arraySlice.call(arguments, 1);
        this[event].apply(this, args);
      }
    }

if (eventSubscriptions) {
      length = eventSubscriptions.length;
      for (idx = 0; idx < length; idx++) {
        subscription = eventSubscriptions[idx];
        subscriber = subscription.subscriber;
        handler = subscription.message;

if (typeof handler === 'string') {
          if (data1 === undefined) {
            subscriber[handler]();
          } else if (data2 === undefined) {
            subscriber[handler](data1);
          } else if (data3 === undefined) {
            subscriber[handler](data1, data2);
          } else if (data4 === undefined) {
            subscriber[handler](data1, data2, data3);
          } else {
            if (!args) {
              args = arraySlice.call(arguments, 1);
            }

subscriber[handler].apply(subscriber, args);
          }
        } else {
          if (data1 === undefined) {
            handler.call(subscriber);
          } else if (data2 === undefined) {
            handler.call(subscriber, data1);
          } else if (data3 === undefined) {
            handler.call(subscriber, data1, data2);
          } else if (data4 === undefined) {
            handler.call(subscriber, data1, data2, data3);
          } else {
            if (!args) {
              args = arraySlice.call(arguments, 1);
            }

handler.apply(subscriber, args);
          }
        }
      }
    }
  },

subscriptionsFor: function(event) {
    return this._subscriptionsMap ? this._subscriptionsMap[event] : null;
  },

_subscriptionsMap: {
    fooNoArguments: [
      new Subscription(subscriber, 'fooNoArguments'),
      new Subscription(subscriber, 'fooNoArguments'),
      new Subscription(subscriber, 'fooNoArguments')
    ],
    fooOneArgument: [
      new Subscription(subscriber, 'fooOneArgument'),
      new Subscription(subscriber, 'fooOneArgument'),
      new Subscription(subscriber, 'fooOneArgument')
    ],
    fooMultipleArguments: [
      new Subscription(subscriber, 'fooMultipleArguments'),
      new Subscription(subscriber, 'fooMultipleArguments'),
      new Subscription(subscriber, 'fooMultipleArguments')
    ]
  }
};

var EmitterInlinedSlice = {
  emit: function(event, data1, data2, data3, data4) {
    var eventSubscriptions = this.subscriptionsFor(event);
    var length, idx;
    var subscription, subscriber, handler;
    var args, argsLength;

if (this[event]) {
      if (data1 === undefined) {
        this[event]();
      } else if (data2 === undefined) {
        this[event](data1);
      } else if (data3 === undefined) {
        this[event](data1, data2);
      } else if (data4 === undefined) {
        this[event](data1, data2, data3);
      } else {
        argsLength = arguments.length;
        args = new Array(argsLength - 1);
        for (var i = 1; i < argsLength; i++) args[i - 1] = arguments[i];
        this[event].apply(this, args);
      }
    }

handler.apply(subscriber, args);
          }
        }
      }
    }
  },

subscriptionsFor: function(event) {
    return this._subscriptionsMap ? this._subscriptionsMap[event] : null;
  },

var _workerArray = new Array(10);

var EmitterStaticSlice = {
  emit: function(event, data1, data2, data3, data4) {
    var eventSubscriptions = this.subscriptionsFor(event);
    var length, idx;
    var subscription, subscriber, handler;
    var a = arguments, al = arguments.length;
    var args = null;

if (this[event]) {
      if (data1 === undefined) {
        this[event]();
      } else if (data2 === undefined) {
        this[event](data1);
      } else if (data3 === undefined) {
        this[event](data1, data2);
      } else if (data4 === undefined) {
        this[event](data1, data2, data3);
      } else {
        argsLength = arguments.length;
        for (var i = 1; i < argsLength; i++) args[i - 1] = arguments[i];
        args.length = i - 1;
        this[event].apply(this, args);
      }
    }

handler.apply(subscriber, args);
          }
        }
      }
    }
  },

subscriptionsFor: function(event) {
    return this._subscriptionsMap ? this._subscriptionsMap[event] : null;
  },

Define teardown for all tests (runs after each clocked test loop, outside of the timed code region) (see FAQ)

Code snippets to compare

Test 1

Title

Async (check if this is an asynchronous test)

Code

EmitterSlice.emit('fooMultipleArguments', 'wawt', 'foo', 'baz', 'bar', 'lulz');

Test 2

Title

Async (check if this is an asynchronous test)

Code

EmitterInlinedSlice.emit('fooMultipleArguments', 'wawt', 'foo', 'baz', 'bar', 'lulz');

Test 3

Title

Async (check if this is an asynchronous test)

Code

EmitterStaticSlice.emit('fooMultipleArguments', 'wawt', 'foo', 'baz', 'bar', 'lulz');