Encapsulate optional SerializedScriptValue serialize/deserialize parameters.

third_party/WebKit/Source/bindings/core/v8/SerializedScriptValue.h

 /*
  * Copyright (C) 2009, 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 20 matching lines @@
 #ifndef SerializedScriptValue_h
 #define SerializedScriptValue_h
 
 #include <memory>
 
 #include "bindings/core/v8/NativeValueTraits.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/Transferables.h"
 #include "core/CoreExport.h"
 #include "v8/include/v8.h"
+#include "wtf/Allocator.h"
 #include "wtf/HashMap.h"
 #include "wtf/ThreadSafeRefCounted.h"
 #include "wtf/allocator/Partitions.h"
 #include "wtf/typed_arrays/ArrayBufferContents.h"
 
 namespace blink {
 
 class BlobDataHandle;
 class Transferables;
 class ExceptionState;
@@ skipping 18 matching lines @@
   // Version 7: Extended File serialization with user visibility.
   // Version 8: File.lastModified in milliseconds (seconds-based in earlier
   //            versions.)
   // Version 9: Added Map and Set support.
   static const uint32_t wireFormatVersion = 9;
 
   // VarInt encoding constants.
   static const int varIntShift = 7;
   static const int varIntMask = (1 << varIntShift) - 1;
 
+  struct SerializeOptions {
+    STACK_ALLOCATED();
+    Transferables* transferables = nullptr;
+    WebBlobInfoArray* blobInfo = nullptr;
+  };
   static PassRefPtr<SerializedScriptValue> serialize(v8::Isolate*,
                                                      v8::Local<v8::Value>,
-                                                     Transferables*,
-                                                     WebBlobInfoArray*,
+                                                     const SerializeOptions&,
                                                      ExceptionState&);
   static PassRefPtr<SerializedScriptValue> serializeAndSwallowExceptions(
       v8::Isolate*,
       v8::Local<v8::Value>);
 
   static PassRefPtr<SerializedScriptValue> create();
   static PassRefPtr<SerializedScriptValue> create(const String&);
   static PassRefPtr<SerializedScriptValue> create(const char* data,
                                                   size_t length);
 
   ~SerializedScriptValue();
 
   static PassRefPtr<SerializedScriptValue> nullValue();
 
   String toWireString() const;
   void toWireBytes(Vector<char>&) const;
 
   // Deserializes the value (in the current context). Returns a null value in
   // case of failure.
-  v8::Local<v8::Value> deserialize(v8::Isolate*,
-                                   MessagePortArray* = 0,
-                                   const WebBlobInfoArray* = 0);
+  struct DeserializeOptions {
+    STACK_ALLOCATED();
+    MessagePortArray* messagePorts = nullptr;
+    const WebBlobInfoArray* blobInfo = nullptr;
+  };
+  v8::Local<v8::Value> deserialize(v8::Isolate* isolate) {
+    return deserialize(isolate, DeserializeOptions());
+  }
+  v8::Local<v8::Value> deserialize(v8::Isolate*, const DeserializeOptions&);
 
   // Helper function which pulls the values out of a JS sequence and into a
   // MessagePortArray.  Also validates the elements per sections 4.1.13 and
   // 4.1.15 of the WebIDL spec and section 8.3.3 of the HTML5 spec and generates
   // exceptions as appropriate.
   // Returns true if the array was filled, or false if the passed value was not
   // of an appropriate type.
   static bool extractTransferables(v8::Isolate*,
                                    v8::Local<v8::Value>,
                                    int,
@@ skipping 77 matching lines @@
   bool m_transferablesNeedExternalAllocationRegistration;
 };
 
 template <>
 struct NativeValueTraits<SerializedScriptValue>
     : public NativeValueTraitsBase<SerializedScriptValue> {
   CORE_EXPORT static inline PassRefPtr<SerializedScriptValue> nativeValue(
       v8::Isolate* isolate,
       v8::Local<v8::Value> value,
       ExceptionState& exceptionState) {
-    return SerializedScriptValue::serialize(isolate, value, nullptr, nullptr,
-                                            exceptionState);
+    return SerializedScriptValue::serialize(
+        isolate, value, SerializedScriptValue::SerializeOptions(),
+        exceptionState);
   }
 };
 
 }  // namespace blink
 
 #endif  // SerializedScriptValue_h