Support computed properties for ES2015 Function.name

src/objects.cc

 // Copyright 2015 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/objects.h"
 
 #include <cmath>
 #include <iomanip>
 #include <sstream>
 
@@ skipping 13292 matching lines @@
 
 
 Handle<String> JSFunction::GetDebugName(Handle<JSFunction> function) {
   Isolate* isolate = function->GetIsolate();
   Handle<Object> name = JSReceiver::GetDataProperty(
       function, isolate->factory()->display_name_string());
   if (name->IsString()) return Handle<String>::cast(name);
   return JSFunction::GetName(function);
 }
 
+void JSFunction::SetName(Handle<JSFunction> function, Handle<Name> name,
+                         Handle<String> prefix) {
+  Isolate* isolate = function->GetIsolate();
+  Handle<String> function_name = Name::ToFunctionName(name).ToHandleChecked();
+  if (prefix->length() > 0) {
+    IncrementalStringBuilder builder(isolate);
+    builder.AppendString(prefix);
+    builder.AppendCharacter(' ');
+    builder.AppendString(function_name);
+    function_name = builder.Finish().ToHandleChecked();
+  }
+  JSObject::DefinePropertyOrElementIgnoreAttributes(
+      function, isolate->factory()->name_string(), function_name,
+      static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY))
+      .ToHandleChecked();
+}
 
 namespace {
 
 char const kNativeCodeSource[] = "function () { [native code] }";
 
 
 Handle<String> NativeCodeFunctionSourceString(
     Handle<SharedFunctionInfo> shared_info) {
   Isolate* const isolate = shared_info->GetIsolate();
   if (shared_info->name()->IsString()) {
@@ skipping 6466 matching lines @@
   if (cell->value() != *new_value) {
     cell->set_value(*new_value);
     Isolate* isolate = cell->GetIsolate();
     cell->dependent_code()->DeoptimizeDependentCodeGroup(
         isolate, DependentCode::kPropertyCellChangedGroup);
   }
 }
 
 }  // namespace internal
 }  // namespace v8