Make OffscreenCanvas Transferable

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

 /*
  * Copyright (C) 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 18 matching lines @@
  */
 
 #include "bindings/core/v8/SerializedScriptValue.h"
 
 #include "bindings/core/v8/DOMDataStore.h"
 #include "bindings/core/v8/DOMWrapperWorld.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/ScriptValueSerializer.h"
 #include "bindings/core/v8/SerializedScriptValueFactory.h"
+#include "bindings/core/v8/TransferableExtractor.h"
 #include "bindings/core/v8/Transferables.h"
 #include "bindings/core/v8/V8ArrayBuffer.h"
 #include "bindings/core/v8/V8ImageBitmap.h"
 #include "bindings/core/v8/V8MessagePort.h"
 #include "bindings/core/v8/V8SharedArrayBuffer.h"
 #include "core/dom/DOMArrayBuffer.h"
 #include "core/dom/DOMSharedArrayBuffer.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/MessagePort.h"
 #include "core/frame/ImageBitmap.h"
@@ skipping 169 matching lines @@
     if (value->IsArray()) {
         v8::Local<v8::Array> array = v8::Local<v8::Array>::Cast(value);
         length = array->Length();
     } else if (!toV8Sequence(value, length, isolate, exceptionState)) {
         if (!exceptionState.hadException())
             exceptionState.throwTypeError(ExceptionMessages::notAnArrayTypeArgumentOrValue(argumentIndex + 1));
         return false;
     }
 
     v8::Local<v8::Object> transferableArray = v8::Local<v8::Object>::Cast(value);
+    Vector<OwnPtr<TransferableExtractor>> extractors;
 
     // Validate the passed array of transferables.
     for (unsigned i = 0; i < length; ++i) {
         v8::Local<v8::Value> transferableObject;
         if (!transferableArray->Get(isolate->GetCurrentContext(), i).ToLocal(&transferableObject))
             return false;
         // Validation of non-null objects, per HTML5 spec 10.3.3.
         if (isUndefinedOrNull(transferableObject)) {
             exceptionState.throwTypeError("Value at index " + String::number(i) + " is an untransferable " + (transferableObject->IsUndefined() ? "'undefined'" : "'null'") + " value.");
             return false;
         }
+        bool extractorDoneFlag = false;
+        for (const auto& ex : TransferableExtractor::getExtractors()) {
+            if (ex->extract(transferableObject, isolate, transferables, exceptionState, i)) {
+                extractorDoneFlag = true;
+                break;
+            }
+        }
+        if (extractorDoneFlag)
+            break;
         // Validation of Objects implementing an interface, per WebIDL spec 4.1.15.
         if (V8MessagePort::hasInstance(transferableObject, isolate)) {
             MessagePort* port = V8MessagePort::toImpl(v8::Local<v8::Object>::Cast(transferableObject));
             // Check for duplicate MessagePorts.
             if (transferables.messagePorts.contains(port)) {
                 exceptionState.throwDOMException(DataCloneError, "Message port at index " + String::number(i) + " is a duplicate of an earlier port.");
                 return false;
             }
             transferables.messagePorts.append(port);
         } else if (V8ArrayBuffer::hasInstance(transferableObject, isolate)) {
@@ skipping 32 matching lines @@
     m_externallyAllocatedMemory = static_cast<intptr_t>(m_data.length());
     v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(m_externallyAllocatedMemory);
 }
 
 bool SerializedScriptValue::containsTransferableArrayBuffer() const
 {
     return m_arrayBufferContentsArray && !m_arrayBufferContentsArray->isEmpty();
 }
 
 } // namespace blink