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