// this function profiles the json and amf parsing code
// it takes in a path to a json file to load, converts json to amf, and parses amf
public static void PerformanceTest(string path)
{
var newPath = PlayScript.Player.ResolveResourcePath(path);
// read bytes from file
var bytes = System.IO.File.ReadAllBytes(newPath);
// perform json decoding
var jsonTimer = System.Diagnostics.Stopwatch.StartNew();
var jsonText = System.Text.Encoding.UTF8.GetString(bytes);
object jsonRoot = _root.JSON.parse(jsonText);
jsonTimer.Stop();
// write to memory stream and return bytes
using (var outStream = new MemoryStream()) {
JsonStringToAmfStream(jsonText, outStream, true);
outStream.Position = 0;
var amfTimer = System.Diagnostics.Stopwatch.StartNew();
var reader = new Amf3Parser(outStream);
var obj = reader.ReadNextObject();
amfTimer.Stop();
Console.WriteLine("{0} JSONSize:{1} AMFSize:{2} JSONDecodeTime:{3} AMFDecodeTime:{4}", path, bytes.Length, outStream.Length,
jsonTimer.Elapsed, amfTimer.Elapsed);
}
}
internal void BeginRead(Amf3Parser parser)
{
mParser = parser;
// read all property values from amf stream
// these are in the order specified by the amf stream classDef and must be remapped for the deserializer for each propery read
// note that mValues[0] is reserved for undefined, any missing properties will be mapped there
int count = mStreamClassDef.Properties.Length;
for (int i = 0; i < count; i++)
{
mParser.ReadNextObject(ref mValues[i + 1]);
}
// force value[0] to undefined to elegantly handle missing properties as index 0
mValues[0] = Variant.Undefined;
}
// this function gets all the default values for a type by creating a dummy instance and serializing them in and out
public static Amf3Object GetClassDefaultsAsObject(System.Type type)
{
// serialize to stream
var stream = new MemoryStream();
var amfWriter = new Amf3Writer(stream);
// write the defaults to amf stream
amfWriter.WriteDefaultObjectForType(type);
stream.Position = 0;
// read back defaults object
var amfReader = new Amf3Parser(stream);
amfReader.OverrideSerializer = new Amf3Object.Serializer();
return(amfReader.ReadNextObject() as Amf3Object);
}
public object ReadNextObject()
{
int b = stream.ReadByte();
if (b < 0)
{
throw new EndOfStreamException();
}
AmfTypeCode code = (AmfTypeCode)b;
switch (code)
{
case AmfTypeCode.Number:
return(ReadNumber());
case AmfTypeCode.Boolean:
return(ReadBoolean());
case AmfTypeCode.String:
return(ReadString());
case AmfTypeCode.Object:
return(ReadObject());
case AmfTypeCode.Null:
return(null);
case AmfTypeCode.Undefined:
return(null);
case AmfTypeCode.EndOfObject:
return(EndOfObjectMarker);
case AmfTypeCode.Array:
return(ReadArray());
case AmfTypeCode.Date:
return(ReadDate());
case AmfTypeCode.LongString:
case AmfTypeCode.Xml:
return(ReadLongString());
case AmfTypeCode.TypedObject:
return(ReadTypedObject());
case AmfTypeCode.Amf3Data:
if (amf3Parser == null || !PreserveAmf3Context)
{
amf3Parser = new Amf3Parser(stream);
}
Amf3Wrapper wrapper = new Amf3Wrapper(amf3Parser.ReadNextObject());
if (!PreserveAmf3Context)
{
amf3Parser = null;
}
return(wrapper);
}
throw new InvalidOperationException("Cannot parse type " + code);
}
