Map::TransitionElementsTo() extracted from JSObject::GetElementsTransitionMap().

src/runtime.cc

 // 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.
 
 #include <stdlib.h>
 #include <limits>
 
 #include "v8.h"
 
 #include "accessors.h"
@@ skipping 10022 matching lines @@
   }
 
   bool exceeds_array_limit() {
     return exceeds_array_limit_;
   }
 
   Handle<JSArray> ToArray() {
     Handle<JSArray> array = isolate_->factory()->NewJSArray(0);
     Handle<Object> length =
         isolate_->factory()->NewNumber(static_cast<double>(index_offset_));
-    Handle<Map> map;
-    if (fast_elements_) {
-      map = JSObject::GetElementsTransitionMap(array, FAST_HOLEY_ELEMENTS);
-    } else {
-      map = JSObject::GetElementsTransitionMap(array, DICTIONARY_ELEMENTS);
-    }
+    Handle<Map> map = JSObject::GetElementsTransitionMap(
+        array,
+        fast_elements_ ? FAST_HOLEY_ELEMENTS : DICTIONARY_ELEMENTS);
     array->set_map(*map);
     array->set_length(*length);
     array->set_elements(*storage_);
     return array;
   }
 
  private:
   // Convert storage to dictionary mode.
   void SetDictionaryMode(uint32_t index) {
     ASSERT(fast_elements_);
@@ skipping 5120 matching lines @@
   }
   return NULL;
 }
 
 
 const Runtime::Function* Runtime::FunctionForId(Runtime::FunctionId id) {
   return &(kIntrinsicFunctions[static_cast<int>(id)]);
 }
 
 } }  // namespace v8::internal