Wrap object observe implementation in a function.

src/v8natives.js

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file relies on the fact that the following declarations have been made
 // in runtime.js:
 // var $Object = global.Object;
 // var $Boolean = global.Boolean;
 // var $Number = global.Number;
 // var $Function = global.Function;
@@ skipping 891 matching lines @@
         throw MakeTypeError("redefine_disallowed", [p]);
       } else {
         return false;
       }
     }
     var threw = false;
 
     var emit_splice = %IsObserved(obj) && new_length !== old_length;
     var removed;
     if (emit_splice) {
-      BeginPerformSplice(obj);
+      $observeBeginPerformSplice(obj);
       removed = [];
       if (new_length < old_length)
         removed.length = old_length - new_length;
     }
 
     while (new_length < length--) {
       var index = ToString(length);
       if (emit_splice) {
         var deletedDesc = GetOwnPropertyJS(obj, index);
         if (deletedDesc && deletedDesc.hasValue())
           removed[length - new_length] = deletedDesc.getValue();
       }
       if (!Delete(obj, index, false)) {
         new_length = length + 1;
         threw = true;
         break;
       }
     }
     threw = !DefineObjectProperty(obj, "length", desc, should_throw) || threw;
     if (emit_splice) {
-      EndPerformSplice(obj);
-      EnqueueSpliceRecord(obj,
+      $observeEndPerformSplice(obj);
+      $observeEnqueueSpliceRecord(obj,
           new_length < old_length ? new_length : old_length,
           removed,
           new_length > old_length ? new_length - old_length : 0);
     }
     if (threw) {
       if (should_throw) {
         throw MakeTypeError("redefine_disallowed", [p]);
       } else {
         return false;
       }
     }
     return true;
   }
 
   // Step 4 - Special handling for array index.
   if (!IS_SYMBOL(p)) {
     var index = ToUint32(p);
     var emit_splice = false;
     if (ToString(index) == p && index != 4294967295) {
       var length = obj.length;
       if (index >= length && %IsObserved(obj)) {
         emit_splice = true;
-        BeginPerformSplice(obj);
+        $observeBeginPerformSplice(obj);
       }
 
       var length_desc = GetOwnPropertyJS(obj, "length");
       if ((index >= length && !length_desc.isWritable()) ||
           !DefineObjectProperty(obj, p, desc, true)) {
         if (emit_splice)
-          EndPerformSplice(obj);
+          $observeEndPerformSplice(obj);
         if (should_throw) {
           throw MakeTypeError("define_disallowed", [p]);
         } else {
           return false;
         }
       }
       if (index >= length) {
         obj.length = index + 1;
       }
       if (emit_splice) {
-        EndPerformSplice(obj);
-        EnqueueSpliceRecord(obj, length, [], index + 1 - length);
+        $observeEndPerformSplice(obj);
+        $observeEnqueueSpliceRecord(obj, length, [], index + 1 - length);
       }
       return true;
     }
   }
 
   // Step 5 - Fallback to default implementation.
   return DefineObjectProperty(obj, p, desc, should_throw);
 }
 
 
@@ skipping 927 matching lines @@
   }
   if (!IS_SPEC_FUNCTION(method)) {
     throw MakeTypeError('not_iterable', [obj]);
   }
   var iterator = %_CallFunction(obj, method);
   if (!IS_SPEC_OBJECT(iterator)) {
     throw MakeTypeError('not_an_iterator', [iterator]);
   }
   return iterator;
 }