Quasar/Server/Core/ProtoBuf/Serializers/BlobSerializer.cs

80 lines
1.9 KiB
C#

#if !NO_RUNTIME
using System;
#if FEAT_COMPILER
using System.Reflection.Emit;
#endif
#if FEAT_IKVM
using Type = IKVM.Reflection.Type;
#endif
namespace ProtoBuf.Serializers
{
internal sealed class BlobSerializer : IProtoSerializer
{
public Type ExpectedType
{
get { return expectedType; }
}
#if FEAT_IKVM
readonly Type expectedType;
#else
private static readonly Type expectedType = typeof (byte[]);
#endif
public BlobSerializer(ProtoBuf.Meta.TypeModel model, bool overwriteList)
{
#if FEAT_IKVM
expectedType = model.MapType(typeof(byte[]));
#endif
this.overwriteList = overwriteList;
}
private readonly bool overwriteList;
#if !FEAT_IKVM
public object Read(object value, ProtoReader source)
{
return ProtoReader.AppendBytes(overwriteList ? null : (byte[]) value, source);
}
public void Write(object value, ProtoWriter dest)
{
ProtoWriter.WriteBytes((byte[]) value, dest);
}
#endif
bool IProtoSerializer.RequiresOldValue
{
get { return !overwriteList; }
}
bool IProtoSerializer.ReturnsValue
{
get { return true; }
}
#if FEAT_COMPILER
void IProtoSerializer.EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
ctx.EmitBasicWrite("WriteBytes", valueFrom);
}
void IProtoSerializer.EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
if (overwriteList)
{
ctx.LoadNullRef();
}
else
{
ctx.LoadValue(valueFrom);
}
ctx.LoadReaderWriter();
ctx.EmitCall(ctx.MapType(typeof(ProtoReader)).GetMethod("AppendBytes"));
}
#endif
}
}
#endif