harmony_scoping: Implement lexical bindings at top level

src/factory.cc

 // Copyright 2014 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 "src/factory.h"
 
 #include "src/allocation-site-scopes.h"
 #include "src/base/bits.h"
 #include "src/conversions.h"
 #include "src/isolate-inl.h"
@@ skipping 690 matching lines @@
   Handle<Context> context = Handle<Context>::cast(array);
   context->set_closure(*function);
   context->set_previous(function->context());
   context->set_extension(*scope_info);
   context->set_global_object(function->context()->global_object());
   DCHECK(context->IsGlobalContext());
   return context;
 }
 
 
+Handle<GlobalContextTable> Factory::NewEmptyGlobalContextTable() {
+  Handle<FixedArray> array = NewFixedArray(1);
+  array->set_map_no_write_barrier(*global_context_table_map());
+  array->set(0, Smi::FromInt(0));
+  Handle<GlobalContextTable> context_table =
+      Handle<GlobalContextTable>::cast(array);
+  return context_table;
+}
+
+
 Handle<Context> Factory::NewModuleContext(Handle<ScopeInfo> scope_info) {
   Handle<FixedArray> array =
       NewFixedArray(scope_info->ContextLength(), TENURED);
   array->set_map_no_write_barrier(*module_context_map());
   // Instance link will be set later.
   Handle<Context> context = Handle<Context>::cast(array);
   context->set_extension(Smi::FromInt(0));
   return context;
 }
 
@@ skipping 1777 matching lines @@
   return Handle<Object>::null();
 }
 
 
 Handle<Object> Factory::ToBoolean(bool value) {
   return value ? true_value() : false_value();
 }
 
 
 } }  // namespace v8::internal