1 files changed, 69 insertions, 0 deletions
diff --git a/third_party/webkit/PerformanceTests/Speedometer/resources/flightjs-example-app/components/flight/lib/advice.js b/third_party/webkit/PerformanceTests/Speedometer/resources/flightjs-example-app/components/flight/lib/advice.js
new file mode 100644
index 0000000000..0f4686929a
--- /dev/null
+++ b/third_party/webkit/PerformanceTests/Speedometer/resources/flightjs-example-app/components/flight/lib/advice.js
@@ -0,0 +1,69 @@
+// ==========================================
+// Copyright 2013 Twitter, Inc
+// Licensed under The MIT License
+// http://opensource.org/licenses/MIT
+// ==========================================
+
+"use strict";
+
+define(
+
+  [
+    './utils',
+    './compose'
+  ],
+
+  function (util, compose) {
+
+    var advice = {
+
+      around: function(base, wrapped) {
+        return function composedAround() {
+          // unpacking arguments by hand benchmarked faster
+          var i = 0, l = arguments.length, args = new Array(l + 1);
+          args[0] = base.bind(this);
+          for (; i < l; i++) args[i + 1] = arguments[i];
+
+          return wrapped.apply(this, args);
+        }
+      },
+
+      before: function(base, before) {
+        var beforeFn = (typeof before == 'function') ? before : before.obj[before.fnName];
+        return function composedBefore() {
+          beforeFn.apply(this, arguments);
+          return base.apply(this, arguments);
+        }
+      },
+
+      after: function(base, after) {
+        var afterFn = (typeof after == 'function') ? after : after.obj[after.fnName];
+        return function composedAfter() {
+          var res = (base.unbound || base).apply(this, arguments);
+          afterFn.apply(this, arguments);
+          return res;
+        }
+      },
+
+      // a mixin that allows other mixins to augment existing functions by adding additional
+      // code before, after or around.
+      withAdvice: function() {
+        ['before', 'after', 'around'].forEach(function(m) {
+          this[m] = function(method, fn) {
+
+            compose.unlockProperty(this, method, function() {
+              if (typeof this[method] == 'function') {
+                return this[method] = advice[m](this[method], fn);
+              } else {
+                return this[method] = fn;
+              }
+            });
+
+          };
+        }, this);
+      }
+    };
+
+    return advice;
+  }
+);