[Experimental] CSSSerializer Proof-of-concept

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

Index: third_party/WebKit/Source/core/css/MediaQueryExp.cpp
diff --git a/third_party/WebKit/Source/core/css/MediaQueryExp.cpp b/third_party/WebKit/Source/core/css/MediaQueryExp.cpp
index 181b09657620cf8e24cb09ab735ca46666f07d1f..d889c2a5b906da46fc85d789fe604a53dbb8d0a1 100644
--- a/third_party/WebKit/Source/core/css/MediaQueryExp.cpp
+++ b/third_party/WebKit/Source/core/css/MediaQueryExp.cpp
@@ -30,6 +30,8 @@
 #include "core/css/MediaQueryExp.h"
 
 #include "core/css/parser/CSSParserToken.h"
+#include "core/css/serializer/CSSDeserializeStream.h"
+#include "core/css/serializer/CSSSerializeStream.h"
 #include "core/html/parser/HTMLParserIdioms.h"
 #include "platform/Decimal.h"
 #include "platform/RuntimeEnabledFeatures.h"
@@ -40,6 +42,32 @@ namespace blink {
 
 using namespace MediaFeatureNames;
 
+void MediaQueryExpValue::serialize(CSSSerializeStream* stream) const
+{
+    stream->writeEnumAsInt<CSSValueID>(id);
+    stream->writeDouble(value);
+    stream->writeEnumAsInt<CSSPrimitiveValue::UnitType>(unit);
+    stream->writeUnsigned(numerator);
+    stream->writeUnsigned(denominator);
+    stream->writeBool(isID);
+    stream->writeBool(isValue);
+    stream->writeBool(isRatio);
+}
+
+MediaQueryExpValue MediaQueryExpValue::deserialize(CSSDeserializeStream* stream)
+{
+    MediaQueryExpValue value;
+    value.id = stream->readIntAsEnum<CSSValueID>();
+    value.value = stream->readDouble();
+    value.unit = stream->readIntAsEnum<CSSPrimitiveValue::UnitType>();
+    value.numerator = stream->readUnsigned();
+    value.denominator = stream->readUnsigned();
+    value.isID = stream->readBool();
+    value.isValue = stream->readBool();
+    value.isRatio = stream->readBool();
+    return value;
+}
+
 static inline bool featureWithValidIdent(const String& mediaFeature, CSSValueID ident)
 {
     if (mediaFeature == displayModeMediaFeature)
@@ -302,4 +330,17 @@ String MediaQueryExpValue::cssText() const
     return output.toString();
 }
 
+void MediaQueryExp::serialize(CSSSerializeStream* stream) const
+{
+    stream->writeString(m_mediaFeature);
+    m_expValue.serialize(stream);
+}
+
+PassOwnPtrWillBeRawPtr<MediaQueryExp> MediaQueryExp::deserialize(CSSDeserializeStream* stream)
+{
+    String mediaFeature = stream->readString();
+    MediaQueryExpValue expValue = MediaQueryExpValue::deserialize(stream);
+    return adoptPtrWillBeNoop(new MediaQueryExp(mediaFeature, expValue));
+}
+
 } // namespace