[Fetch API] Put body members directly on Response/Request

Source/modules/serviceworkers/FetchBodyStream.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 "modules/serviceworkers/FetchBodyStream.h"
-
-#include "bindings/core/v8/ScriptPromiseResolver.h"
-#include "bindings/core/v8/ScriptState.h"
-#include "bindings/core/v8/V8ThrowException.h"
-#include "core/dom/ExceptionCode.h"
-#include "core/fileapi/Blob.h"
-#include "core/fileapi/FileReaderLoader.h"
-#include "core/fileapi/FileReaderLoaderClient.h"
-#include "modules/serviceworkers/ResponseInit.h"
-#include "platform/NotImplemented.h"
-#include "public/platform/WebServiceWorkerResponse.h"
-
-namespace blink {
-
-FetchBodyStream* FetchBodyStream::create(ExecutionContext* context, PassRefPtr<BlobDataHandle> blobDataHandle)
-{
-    FetchBodyStream* fetchBodyStream = new FetchBodyStream(context, blobDataHandle);
-    fetchBodyStream->suspendIfNeeded();
-    return fetchBodyStream;
-}
-
-ScriptPromise FetchBodyStream::readAsync(ScriptState* scriptState, ResponseType type)
-{
-    if (m_hasRead)
-        return ScriptPromise::reject(scriptState, V8ThrowException::createTypeError("Already read", scriptState->isolate()));
-
-    m_hasRead = true;
-    m_responseType = type;
-
-    ASSERT(!m_resolver);
-    m_resolver = ScriptPromiseResolver::create(scriptState);
-    ScriptPromise promise = m_resolver->promise();
-
-    FileReaderLoader::ReadType readType = FileReaderLoader::ReadAsText;
-
-    switch (type) {
-    case ResponseAsArrayBuffer:
-        readType = FileReaderLoader::ReadAsArrayBuffer;
-        break;
-    case ResponseAsBlob:
-        if (m_blobDataHandle->size() != kuint64max) {
-            // If the size of |m_blobDataHandle| is set correctly, creates Blob from it.
-            m_resolver->resolve(Blob::create(m_blobDataHandle));
-            m_resolver.clear();
-            return promise;
-        }
-        // If the size is not set, read as ArrayBuffer and create a new blob to get the size.
-        // FIXME: This workaround is not good for performance.
-        // When we will stop using Blob as a base system of FetchBodyStream to support stream, this problem should be solved.
-        readType = FileReaderLoader::ReadAsArrayBuffer;
-        break;
-    case ResponseAsFormData:
-        // FIXME: Implement this.
-        ASSERT_NOT_REACHED();
-        break;
-    case ResponseAsJSON:
-    case ResponseAsText:
-        break;
-    default:
-        ASSERT_NOT_REACHED();
-    }
-
-    m_loader = adoptPtr(new FileReaderLoader(readType, this));
-    m_loader->start(scriptState->executionContext(), m_blobDataHandle);
-
-    return promise;
-}
-
-ScriptPromise FetchBodyStream::asArrayBuffer(ScriptState* scriptState)
-{
-    return readAsync(scriptState, ResponseAsArrayBuffer);
-}
-
-ScriptPromise FetchBodyStream::asBlob(ScriptState* scriptState)
-{
-    return readAsync(scriptState, ResponseAsBlob);
-}
-
-ScriptPromise FetchBodyStream::asFormData(ScriptState* scriptState)
-{
-    return readAsync(scriptState, ResponseAsFormData);
-}
-
-ScriptPromise FetchBodyStream::asJSON(ScriptState* scriptState)
-{
-    return readAsync(scriptState, ResponseAsJSON);
-}
-
-ScriptPromise FetchBodyStream::asText(ScriptState* scriptState)
-{
-    return readAsync(scriptState, ResponseAsText);
-}
-
-void FetchBodyStream::stop()
-{
-    // Canceling the load will call didFail which will remove the resolver.
-    if (m_resolver)
-        m_loader->cancel();
-}
-
-bool FetchBodyStream::hasPendingActivity() const
-{
-    return m_resolver;
-}
-
-FetchBodyStream::FetchBodyStream(ExecutionContext* context, PassRefPtr<BlobDataHandle> blobDataHandle)
-    : ActiveDOMObject(context)
-    , m_blobDataHandle(blobDataHandle)
-    , m_hasRead(false)
-{
-    if (!m_blobDataHandle) {
-        m_blobDataHandle = BlobDataHandle::create(BlobData::create(), 0);
-    }
-}
-
-void FetchBodyStream::resolveJSON()
-{
-    ASSERT(m_responseType == ResponseAsJSON);
-    ScriptState::Scope scope(m_resolver->scriptState());
-    v8::Isolate* isolate = m_resolver->scriptState()->isolate();
-    v8::Local<v8::String> inputString = v8String(isolate, m_loader->stringResult());
-    v8::TryCatch trycatch;
-    v8::Local<v8::Value> parsed = v8::JSON::Parse(inputString);
-    if (parsed.IsEmpty()) {
-        if (trycatch.HasCaught())
-            m_resolver->reject(trycatch.Exception());
-        else
-            m_resolver->reject(v8::Exception::Error(v8::String::NewFromUtf8(isolate, "JSON parse error")));
-        return;
-    }
-    m_resolver->resolve(parsed);
-}
-
-// FileReaderLoaderClient functions.
-void FetchBodyStream::didStartLoading() { }
-void FetchBodyStream::didReceiveData() { }
-void FetchBodyStream::didFinishLoading()
-{
-    if (!m_resolver->executionContext() || m_resolver->executionContext()->activeDOMObjectsAreStopped())
-        return;
-
-    switch (m_responseType) {
-    case ResponseAsArrayBuffer:
-        m_resolver->resolve(m_loader->arrayBufferResult());
-        break;
-    case ResponseAsBlob: {
-        ASSERT(m_blobDataHandle->size() == kuint64max);
-        OwnPtr<BlobData> blobData = BlobData::create();
-        RefPtr<ArrayBuffer> buffer = m_loader->arrayBufferResult();
-        blobData->appendArrayBuffer(buffer.get());
-        const size_t length = blobData->length();
-        m_resolver->resolve(Blob::create(BlobDataHandle::create(blobData.release(), length)));
-        break;
-    }
-    case ResponseAsFormData:
-        ASSERT_NOT_REACHED();
-        break;
-    case ResponseAsJSON:
-        resolveJSON();
-        break;
-    case ResponseAsText:
-        m_resolver->resolve(m_loader->stringResult());
-        break;
-    default:
-        ASSERT_NOT_REACHED();
-    }
-    m_resolver.clear();
-}
-
-void FetchBodyStream::didFail(FileError::ErrorCode code)
-{
-    ASSERT(m_resolver);
-    if (!m_resolver->executionContext() || m_resolver->executionContext()->activeDOMObjectsAreStopped())
-        return;
-
-    m_resolver->resolve("");
-    m_resolver.clear();
-}
-
-} // namespace blink