using System;
using ProtoBuf.Compiler;
using ProtoBuf.Meta;

namespace ProtoBuf.Serializers;

internal class UInt16Serializer : IProtoSerializer
{
	private static readonly Type expectedType = typeof(ushort);

	public virtual Type ExpectedType => expectedType;

	bool IProtoSerializer.RequiresOldValue => false;

	bool IProtoSerializer.ReturnsValue => true;

	public UInt16Serializer(TypeModel model)
	{
	}

	public virtual object Read(object value, ProtoReader source)
	{
		return source.ReadUInt16();
	}

	public virtual void Write(object value, ProtoWriter dest)
	{
		ProtoWriter.WriteUInt16((ushort)value, dest);
	}

	void IProtoSerializer.EmitWrite(CompilerContext ctx, Local valueFrom)
	{
		ctx.EmitBasicWrite("WriteUInt16", valueFrom);
	}

	void IProtoSerializer.EmitRead(CompilerContext ctx, Local valueFrom)
	{
		ctx.EmitBasicRead("ReadUInt16", ctx.MapType(typeof(ushort)));
	}
}