[Experimental] CSSSerializer Proof-of-concept

third_party/WebKit/Source/core/css/MediaQuery.cpp

 /*
  * CSS Media Query
  *
  * Copyright (C) 2005, 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
@@ skipping 12 matching lines @@
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "core/css/MediaQuery.h"
 
 #include "core/MediaTypeNames.h"
 #include "core/css/MediaQueryExp.h"
+#include "core/css/serializer/CSSDeserializeStream.h"
+#include "core/css/serializer/CSSSerializeStream.h"
 #include "core/html/parser/HTMLParserIdioms.h"
 #include "wtf/NonCopyingSort.h"
 #include "wtf/text/StringBuilder.h"
 
 namespace blink {
 
 // http://dev.w3.org/csswg/cssom/#serialize-a-media-query
 String MediaQuery::serialize() const
 {
     StringBuilder result;
@@ skipping 82 matching lines @@
 
 // http://dev.w3.org/csswg/cssom/#serialize-a-list-of-media-queries
 String MediaQuery::cssText() const
 {
     if (m_serializationCache.isNull())
         const_cast<MediaQuery*>(this)->m_serializationCache = serialize();
 
     return m_serializationCache;
 }
 
+void MediaQuery::serialize(CSSSerializeStream* stream) const
+{
+    stream->writeEnumAsInt<Restrictor>(m_restrictor);
+    stream->writeString(m_mediaType);
+
+    stream->writeUnsigned(m_expressions->size());
+    for (const OwnPtrWillBeMember<MediaQueryExp>& exp : *m_expressions)
+        exp->serialize(stream);
+}
+
+PassOwnPtrWillBeRawPtr<MediaQuery> MediaQuery::deserialize(CSSDeserializeStream* stream)
+{
+    Restrictor restrictor = stream->readIntAsEnum<Restrictor>();
+    String mediaType = stream->readString();
+
+    OwnPtrWillBeMember<ExpressionHeapVector> expressions = adoptPtrWillBeNoop(new ExpressionHeapVector);
+    unsigned size = stream->readUnsigned();
+    expressions->reserveCapacity(size);
+    for (unsigned i = 0; i < size; ++ i)
+        expressions->append(MediaQueryExp::deserialize(stream));
+
+    return adoptPtrWillBeNoop(new MediaQuery(restrictor, mediaType, expressions.release()));
+}
+
 DEFINE_TRACE(MediaQuery)
 {
     // We don't support tracing of vectors of OwnPtrs (ie. OwnPtr<Vector<OwnPtr<MediaQuery>>>).
     // Since this is a transitional object we are just ifdef'ing it out when oilpan is not enabled.
 #if ENABLE(OILPAN)
     visitor->trace(m_expressions);
 #endif
 }
 
 }