Add interceptor support for symbols

src/stub-cache.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 "src/v8.h"
 
 #include "src/api.h"
 #include "src/arguments.h"
 #include "src/ast.h"
 #include "src/code-stubs.h"
@@ skipping 507 matching lines @@
 
 /**
  * Attempts to load a property with an interceptor (which must be present),
  * but doesn't search the prototype chain.
  *
  * Returns |Heap::no_interceptor_result_sentinel()| if interceptor doesn't
  * provide any value for the given name.
  */
 RUNTIME_FUNCTION(LoadPropertyWithInterceptorOnly) {
   DCHECK(args.length() == NamedLoadHandlerCompiler::kInterceptorArgsLength);
-  Handle<Name> name_handle =
+  Handle<Name> name =
       args.at<Name>(NamedLoadHandlerCompiler::kInterceptorArgsNameIndex);
   Handle<InterceptorInfo> interceptor_info = args.at<InterceptorInfo>(
       NamedLoadHandlerCompiler::kInterceptorArgsInfoIndex);
 
-  // TODO(rossberg): Support symbols in the API.
-  if (name_handle->IsSymbol())
+  if (name->IsSymbol() && !interceptor_info->can_intercept_symbols())
     return isolate->heap()->no_interceptor_result_sentinel();
-  Handle<String> name = Handle<String>::cast(name_handle);
 
   Address getter_address = v8::ToCData<Address>(interceptor_info->getter());
-  v8::NamedPropertyGetterCallback getter =
-      FUNCTION_CAST<v8::NamedPropertyGetterCallback>(getter_address);
+  v8::GenericNamedPropertyGetterCallback getter =
+      FUNCTION_CAST<v8::GenericNamedPropertyGetterCallback>(getter_address);
   DCHECK(getter != NULL);
 
   Handle<JSObject> receiver =
       args.at<JSObject>(NamedLoadHandlerCompiler::kInterceptorArgsThisIndex);
   Handle<JSObject> holder =
       args.at<JSObject>(NamedLoadHandlerCompiler::kInterceptorArgsHolderIndex);
   PropertyCallbackArguments callback_args(
       isolate, interceptor_info->data(), *receiver, *holder);
   {
     // Use the interceptor getter.
@@ skipping 729 matching lines @@
           Handle<FunctionTemplateInfo>(
               FunctionTemplateInfo::cast(signature->receiver()));
     }
   }
 
   is_simple_api_call_ = true;
 }
 
 
 } }  // namespace v8::internal