Stream scripts to V8 as they load - Blink side.

Source/core/fetch/ScriptResource.cpp

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
     Copyright (C) 2002 Waldo Bastian (bastian@kde.org)
     Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
     Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Library General Public License for more details.
 
     You should have received a copy of the GNU Library General Public License
     along with this library; see the file COPYING.LIB.  If not, write to
     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA 02110-1301, USA.
 
     This class provides all functionality needed for loading images, style sheets and html
     pages from the web. It has a memory cache for these objects.
 */
 
 #include "config.h"
 #include "core/fetch/ScriptResource.h"
 
+#include "core/fetch/ResourceClientWalker.h"
 #include "platform/MIMETypeRegistry.h"
 #include "platform/SharedBuffer.h"
 #include "platform/network/HTTPParsers.h"
 
 namespace blink {
 
 ScriptResource::ScriptResource(const ResourceRequest& resourceRequest, const String& charset)
     : TextResource(resourceRequest, Script, "application/javascript", charset)
 {
     DEFINE_STATIC_LOCAL(const AtomicString, acceptScript, ("*/*", AtomicString::ConstructFromLiteral));
 
     // It's javascript we want.
     // But some websites think their scripts are <some wrong mimetype here>
     // and refuse to serve them if we only accept application/x-javascript.
     setAccept(acceptScript);
 }
 
 ScriptResource::~ScriptResource()
 {
 }
 
+void ScriptResource::didAddClient(ResourceClient* client)
+{
+    ASSERT(client->resourceClientType() == ScriptResourceClient::expectedType());
+    Resource::didAddClient(client);
+}
+
+void ScriptResource::appendData(const char* data, int length)
+{
+    Resource::appendData(data, length);
+    ResourceClientWalker<ScriptResourceClient> walker(m_clients);
+    while (ScriptResourceClient* client = walker.next())
+        client->notifyAppendData(this);
+}
+
 AtomicString ScriptResource::mimeType() const
 {
     return extractMIMETypeFromMediaType(m_response.httpHeaderField("Content-Type")).lower();
 }
 
 const String& ScriptResource::script()
 {
     ASSERT(!isPurgeable());
     ASSERT(isLoaded());
 
     if (!m_script && m_data) {
         String script = decodedText();
         m_data.clear();
         // We lie a it here and claim that script counts as encoded data (even though it's really decoded data).
         // That's because the MemoryCache thinks that it can clear out decoded data by calling destroyDecodedData(),
         // but we can't destroy script in destroyDecodedData because that's our only copy of the data!
         setEncodedSize(script.sizeInBytes());
         m_script = AtomicString(script);
     }
 
     return m_script.string();
 }
 
 bool ScriptResource::mimeTypeAllowedByNosniff() const
 {
     return parseContentTypeOptionsHeader(m_response.httpHeaderField("X-Content-Type-Options")) != ContentTypeOptionsNosniff || MIMETypeRegistry::isSupportedJavaScriptMIMEType(mimeType());
 }
 
 } // namespace blink