bindings: fixed incorrect dependency of SerializedScriptValue.

Source/bindings/core/v8/SerializedScriptValueFactory.cpp

+// Copyright 2014 The Chromium 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 "config.h"
+#include "bindings/core/v8/SerializedScriptValueFactory.h"
+
+#include "bindings/core/v8/ExceptionState.h"
+#include "bindings/core/v8/ScriptValueSerializer.h"
+#include "wtf/ByteOrder.h"
+#include "wtf/text/StringBuffer.h"
+
+namespace blink {
+
+SerializedScriptValueFactory* SerializedScriptValueFactory::m_instance = 0;
+
+PassRefPtr<SerializedScriptValue> SerializedScriptValueFactory::create(v8::Handle<v8::Value> value, MessagePortArray* messagePorts, ArrayBufferArray* arrayBuffers, WebBlobInfoArray* blobInfo, ExceptionState& exceptionState, v8::Isolate* isolate)
+{
+    RefPtr<SerializedScriptValue> serializedValue = create();
+    SerializedScriptValueWriter writer;
+    ScriptValueSerializer::Status status;
+    String errorMessage;
+    {
+        v8::TryCatch tryCatch;
+        status = doSerialize(value, writer, messagePorts, arrayBuffers, blobInfo, serializedValue.get(), tryCatch, errorMessage, isolate);
+        if (status == ScriptValueSerializer::JSException) {
+            // If there was a JS exception thrown, re-throw it.
+            exceptionState.rethrowV8Exception(tryCatch.Exception());
+            return serializedValue.release();
+        }
+    }
+    switch (status) {
+    case ScriptValueSerializer::InputError:
+    case ScriptValueSerializer::DataCloneError:
+        exceptionState.throwDOMException(ScriptValueSerializer::DataCloneError, errorMessage);
+        return serializedValue.release();
+    case ScriptValueSerializer::Success:
+        transferData(serializedValue.get(), writer, arrayBuffers, exceptionState, isolate);
+        return serializedValue.release();
+    case ScriptValueSerializer::JSException:
+        ASSERT_NOT_REACHED();
+        break;
+    }
+    ASSERT_NOT_REACHED();
+    return serializedValue.release();
+}
+
+PassRefPtr<SerializedScriptValue> SerializedScriptValueFactory::create(v8::Handle<v8::Value> value, MessagePortArray* messagePorts, ArrayBufferArray* arrayBuffers, ExceptionState& exceptionState, v8::Isolate* isolate)
+{
+    return create(value, messagePorts, arrayBuffers, 0, exceptionState, isolate);
+}
+
+PassRefPtr<SerializedScriptValue> SerializedScriptValueFactory::createAndSwallowExceptions(v8::Isolate* isolate, v8::Handle<v8::Value> value)
+{
+    TrackExceptionState exceptionState;
+    return create(value, 0, 0, exceptionState, isolate);
+}
+
+PassRefPtr<SerializedScriptValue> SerializedScriptValueFactory::create(const ScriptValue& value, WebBlobInfoArray* blobInfo, ExceptionState& exceptionState, v8::Isolate* isolate)
+{
+    ASSERT(isolate->InContext());
+    return create(value.v8Value(), 0, 0, blobInfo, exceptionState, isolate);
+}
+
+PassRefPtr<SerializedScriptValue> SerializedScriptValueFactory::createFromWire(const String& data)
+{
+    return adoptRef(new SerializedScriptValue(data));
+}
+
+PassRefPtr<SerializedScriptValue> SerializedScriptValueFactory::createFromWireBytes(const Vector<uint8_t>& data)
+{
+    // Decode wire data from big endian to host byte order.
+    ASSERT(!(data.size() % sizeof(UChar)));
+    size_t length = data.size() / sizeof(UChar);
+    StringBuffer<UChar> buffer(length);
+    const UChar* src = reinterpret_cast<const UChar*>(data.data());
+    UChar* dst = buffer.characters();
+    for (size_t i = 0; i < length; i++)
+        dst[i] = ntohs(src[i]);
+
+    return createFromWire(String::adopt(buffer));
+}
+
+PassRefPtr<SerializedScriptValue> SerializedScriptValueFactory::create(const String& data)
+{
+    return create(data, v8::Isolate::GetCurrent());
+}
+
+PassRefPtr<SerializedScriptValue> SerializedScriptValueFactory::create(const String& data, v8::Isolate* isolate)
+{
+    ASSERT_NOT_REACHED();
+    SerializedScriptValueWriter writer;
+    writer.writeWebCoreString(data);
+    String wireData = writer.takeWireString();
+    return createFromWire(wireData);
+}
+
+PassRefPtr<SerializedScriptValue> SerializedScriptValueFactory::create()
+{
+    return adoptRef(new SerializedScriptValue());
+}
+
+void SerializedScriptValueFactory::transferData(SerializedScriptValue* serializedValue, SerializedScriptValueWriter& writer, ArrayBufferArray* arrayBuffers, ExceptionState& exceptionState, v8::Isolate* isolate)
+{
+    serializedValue->setData(writer.takeWireString());
+    ASSERT(serializedValue->data().impl()->hasOneRef());
+    if (!arrayBuffers || !arrayBuffers->size())
+        return;
+    serializedValue->transferArrayBuffers(isolate, *arrayBuffers, exceptionState);
+}
+
+ScriptValueSerializer::Status SerializedScriptValueFactory::doSerialize(v8::Handle<v8::Value> value, SerializedScriptValueWriter& writer, MessagePortArray* messagePorts, ArrayBufferArray* arrayBuffers, WebBlobInfoArray* blobInfo, SerializedScriptValue* serializedValue, v8::TryCatch& tryCatch, String& errorMessage, v8::Isolate* isolate)
+{
+    return doSerialize(value, writer, messagePorts, arrayBuffers, blobInfo, serializedValue->blobDataHandles(), tryCatch, errorMessage, isolate);
+}
+
+ScriptValueSerializer::Status SerializedScriptValueFactory::doSerialize(v8::Handle<v8::Value> value, SerializedScriptValueWriter& writer, MessagePortArray* messagePorts, ArrayBufferArray* arrayBuffers, WebBlobInfoArray* blobInfo, BlobDataHandleMap& blobDataHandles, v8::TryCatch& tryCatch, String& errorMessage, v8::Isolate* isolate)
+{
+    ScriptValueSerializer serializer(writer, messagePorts, arrayBuffers, blobInfo, blobDataHandles, tryCatch, ScriptState::current(isolate));
+    ScriptValueSerializer::Status status = serializer.serialize(value);
+    errorMessage = serializer.errorMessage();
+    return status;
+}
+
+v8::Handle<v8::Value> SerializedScriptValueFactory::deserialize(SerializedScriptValue* value, v8::Isolate* isolate, MessagePortArray* messagePorts, const WebBlobInfoArray* blobInfo)
+{
+    // deserialize() can run arbitrary script (e.g., setters), which could result in |this| being destroyed.
+    // Holding a RefPtr ensures we are alive (along with our internal data) throughout the operation.
+    RefPtr<SerializedScriptValue> protect(value);
+    return deserialize(value->data(), value->blobDataHandles(), value->arrayBufferContentsArray(), isolate, messagePorts, blobInfo);
+}
+
+v8::Handle<v8::Value> SerializedScriptValueFactory::deserialize(String& data, BlobDataHandleMap& blobDataHandles, ArrayBufferContentsArray* arrayBufferContentsArray, v8::Isolate* isolate, MessagePortArray* messagePorts, const WebBlobInfoArray* blobInfo)
+{
+    if (!data.impl())
+        return v8::Null(isolate);
+    COMPILE_ASSERT(sizeof(SerializedScriptValueWriter::BufferValueType) == 2, BufferValueTypeIsTwoBytes);
+    data.ensure16Bit();
+    // FIXME: SerializedScriptValue shouldn't use String for its underlying
+    // storage. Instead, it should use SharedBuffer or Vector<uint8_t>. The
+    // information stored in m_data isn't even encoded in UTF-16. Instead,
+    // unicode characters are encoded as UTF-8 with two code units per UChar.
+    SerializedScriptValueReader reader(reinterpret_cast<const uint8_t*>(data.impl()->characters16()), 2 * data.length(), blobInfo, blobDataHandles, ScriptState::current(isolate));
+    ScriptValueDeserializer deserializer(reader, messagePorts, arrayBufferContentsArray);
+
+    // deserialize() can run arbitrary script (e.g., setters), which could result in |this| being destroyed.
+    // Holding a RefPtr ensures we are alive (along with our internal data) throughout the operation.
+    return deserializer.deserialize();
+}
+
+
+} // namespace blink