Use PayloadReader in System.Resources.Extensions

src/libraries/System.Resources.Extensions/System.Resources.Extensions.sln

@@ -55,6 +55,10 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "ref", "tools\ref", "{DB5983
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "tools", "tools", "{7FF9B3DF-E383-4487-9ADB-E3BF59CFCE83}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "System.Resources.Extensions.Compat.Tests", "tests\CompatTests\System.Resources.Extensions.Compat.Tests.csproj", "{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "System.Resources.Extensions.BinaryFormat.Tests", "tests\BinaryFormatTests\System.Resources.Extensions.BinaryFormat.Tests.csproj", "{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -503,6 +507,66 @@ Global
 		{7E29F73C-D2DE-4DA4-B399-F6A2475A11EC}.Checked|arm64.ActiveCfg = Debug|Any CPU
 		{7E29F73C-D2DE-4DA4-B399-F6A2475A11EC}.Checked|x64.ActiveCfg = Debug|Any CPU
 		{7E29F73C-D2DE-4DA4-B399-F6A2475A11EC}.Checked|x86.ActiveCfg = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Checked|Any CPU.ActiveCfg = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Checked|Any CPU.Build.0 = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Checked|arm.ActiveCfg = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Checked|arm.Build.0 = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Checked|arm64.ActiveCfg = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Checked|arm64.Build.0 = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Checked|x64.ActiveCfg = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Checked|x64.Build.0 = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Checked|x86.ActiveCfg = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Checked|x86.Build.0 = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Debug|arm.ActiveCfg = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Debug|arm.Build.0 = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Debug|arm64.ActiveCfg = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Debug|arm64.Build.0 = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Debug|x64.Build.0 = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Debug|x86.Build.0 = Debug|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Release|Any CPU.Build.0 = Release|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Release|arm.ActiveCfg = Release|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Release|arm.Build.0 = Release|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Release|arm64.ActiveCfg = Release|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Release|arm64.Build.0 = Release|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Release|x64.ActiveCfg = Release|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Release|x64.Build.0 = Release|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Release|x86.ActiveCfg = Release|Any CPU
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1}.Release|x86.Build.0 = Release|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Checked|Any CPU.ActiveCfg = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Checked|Any CPU.Build.0 = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Checked|arm.ActiveCfg = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Checked|arm.Build.0 = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Checked|arm64.ActiveCfg = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Checked|arm64.Build.0 = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Checked|x64.ActiveCfg = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Checked|x64.Build.0 = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Checked|x86.ActiveCfg = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Checked|x86.Build.0 = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Debug|arm.ActiveCfg = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Debug|arm.Build.0 = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Debug|arm64.ActiveCfg = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Debug|arm64.Build.0 = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Debug|x64.Build.0 = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Debug|x86.Build.0 = Debug|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Release|Any CPU.Build.0 = Release|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Release|arm.ActiveCfg = Release|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Release|arm.Build.0 = Release|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Release|arm64.ActiveCfg = Release|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Release|arm64.Build.0 = Release|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Release|x64.ActiveCfg = Release|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Release|x64.Build.0 = Release|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Release|x86.ActiveCfg = Release|Any CPU
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -531,6 +595,8 @@ Global
 		{BE197124-901B-4517-879B-93D0E6684A2C} = {7FF9B3DF-E383-4487-9ADB-E3BF59CFCE83}
 		{7E29F73C-D2DE-4DA4-B399-F6A2475A11EC} = {DB598308-6179-48EA-A670-0DA6CE5D8340}
 		{DB598308-6179-48EA-A670-0DA6CE5D8340} = {7FF9B3DF-E383-4487-9ADB-E3BF59CFCE83}
+		{BD76A85A-8E6F-4D4C-A628-661EFE6999F1} = {2195CD2B-EF9E-46A7-B4AA-A2CD31625957}
+		{4D72DCD5-BB24-47ED-9B98-8E0B49A9F314} = {2195CD2B-EF9E-46A7-B4AA-A2CD31625957}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {E201426B-999F-48A5-BCFD-3E757AA0E182}

src/libraries/System.Resources.Extensions/src/Resources/Strings.resx

@@ -207,4 +207,70 @@
   <data name="TypeLoadException_CannotLoadConverter" xml:space="preserve">
     <value>Could not load a converter for type {0}.</value>
   </data>
+  <data name="Serialization_ArrayContainedNulls" xml:space="preserve">
+    <value>The array contained null(s).</value>
+  </data>
+  <data name="Serialization_InvalidValue" xml:space="preserve">
+    <value>Invalid value: `{0}`.</value>
+  </data>
+  <data name="Serialization_UnexpectedNullRecordCount" xml:space="preserve">
+    <value>Unexpected Null Record count.</value>
+  </data>
+  <data name="Serialization_MaxArrayLength" xml:space="preserve">
+    <value>The serialized array length ({0}) was larger than the configured limit {1}.</value>
+  </data>
+  <data name="NotSupported_RecordType" xml:space="preserve">
+    <value>{0} Record Type is not supported by design.</value>
+  </data>
+  <data name="Serialization_InvalidReference" xml:space="preserve">
+    <value>Member reference was pointing to a record of unexpected type.</value>
+  </data>
+  <data name="Serialization_InvalidTypeName" xml:space="preserve">
+    <value>Invalid type name: `{0}`.</value>
+  </data>
+  <data name="Serialization_TypeMismatch" xml:space="preserve">
+    <value>Expected the array to be of type {0}, but its element type was {1}.</value>
+  </data>
+  <data name="NotSupported_NonZeroOffsets" xml:space="preserve">
+    <value>Only arrays with zero offsets are supported.</value>
+  </data>
+  <data name="Serialization_Cycle" xml:space="preserve">
+    <value>Unexpected parser cycle.</value>
+  </data>
+  <data name="Serialization_Incomplete" xml:space="preserve">
+    <value>Objects could not be deserialized completely.</value>
+  </data>
+  <data name="Serialization_IObjectReferenceOnlyPrimivite" xml:space="preserve">
+    <value>IObjectReference type '{0}' can only have primitive member data.</value>
+  </data>
+  <data name="Serialization_MissingCtor" xml:space="preserve">
+    <value>The constructor to deserialize an object of type '{0}' was not found.</value>
+  </data>
+  <data name="Serialization_MissingField" xml:space="preserve">
+    <value>Could not find field '{0}' data for type '{1}'.</value>
+  </data>
+  <data name="Serialization_MissingType" xml:space="preserve">
+    <value>Could not find type '{0}'.</value>
+  </data>
+  <data name="Serialization_Surrogates" xml:space="preserve">
+    <value>Surrogate must return the same object that was provided in the 'obj' parameter.</value>
+  </data>
+  <data name="Serialization_TypeNotSerializable" xml:space="preserve">
+    <value>Type '{0}' is not marked as serializable.</value>
+  </data>
+  <data name="Serialization_InvalidTypeOrAssemblyName" xml:space="preserve">
+    <value>Invalid type or assembly name: `{0},{1}`.</value>
+  </data>
+  <data name="Argument_NonSeekableStream" xml:space="preserve">
+    <value>Stream does not support seeking.</value>
+  </data>
+  <data name="Serialization_DuplicateMemberName" xml:space="preserve">
+    <value>Duplicate member name: `{0}`.</value>
+  </data>
+  <data name="Serialization_DuplicateSerializationRecordId" xml:space="preserve">
+    <value>Duplicate Serialization Record Id: `{0}`.</value>
+  </data>
+  <data name="Serialization_MemberTypeMismatchException" xml:space="preserve">
+    <value>Specified member '{0}' was not of the expected type.</value>
+  </data>
 </root>

src/libraries/System.Resources.Extensions/src/System.Resources.Extensions.csproj

@@ -38,15 +38,54 @@ System.Resources.Extensions.PreserializedResourceWriter</PackageDescription>
     <Compile Include="System\Resources\Extensions\PreserializedResourceWriter.cs" />
     <Compile Include="System\Resources\Extensions\SerializationFormat.cs" />
     <Compile Include="System\Resources\Extensions\TypeNameComparer.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\BinaryFormattedObject.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\BinaryFormattedObject.IParseState.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\BinaryFormattedObject.ITypeResolver.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\BinaryFormattedObject.Options.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\BinaryFormattedObject.ParseState.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\BinaryFormattedObject.TypeResolver.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\BinaryFormattedObjectExtensions.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\Id.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\SerializationEvents.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\SerializationExtensions.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\SerializationInfoExtensions.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\Deserializer\ArrayRecordDeserializer.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\Deserializer\ArrayUpdater.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\Deserializer\ClassRecordDeserializer.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\Deserializer\ClassRecordFieldInfoDeserializer.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\Deserializer\ClassRecordSerializationInfoDeserializer.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\Deserializer\Deserializer.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\Deserializer\FieldValueUpdater.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\Deserializer\IDeserializer.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\Deserializer\ObjectRecordDeserializer.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\Deserializer\PendingSerializationInfo.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\Deserializer\SerializationInfoValueUpdater.cs" />
+    <Compile Include="System\Resources\Extensions\BinaryFormat\Deserializer\ValueUpdater.cs" />
     <Compile Include="$(CoreLibSharedDir)System\Numerics\Hashing\HashHelpers.cs"
              Link="System\Numerics\Hashing\HashHelpers.cs" />
   </ItemGroup>
 
+  <!-- when System.Runtime.Serialization.BinaryFormat gets approved, this whole block will be repalced with a reference to package -->
+  <ItemGroup>
+    <Compile Include="$(LibrariesProjectRoot)\System.Runtime.Serialization.BinaryFormat\src\**\*.cs" />
+    <ProjectReference Include="$(LibrariesProjectRoot)\System.IO.Hashing\src\System.IO.Hashing.csproj" />
+    <ProjectReference Include="$(LibrariesProjectRoot)\System.Reflection.Metadata\src\System.Reflection.Metadata.csproj" />
+    <PackageReference Include="System.ValueTuple" Version="$(SystemValueTupleVersion)" Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework'" />
+  </ItemGroup>
+
   <ItemGroup Condition="'$(TargetFrameworkIdentifier)' != '.NETCoreApp'">
     <Compile Include="$(CoreLibSharedDir)System\Diagnostics\CodeAnalysis\RequiresUnreferencedCodeAttribute.cs" 
              Link="System\Diagnostics\CodeAnalysis\RequiresUnreferencedCodeAttribute.cs" />
     <Compile Include="$(CoreLibSharedDir)System\Diagnostics\CodeAnalysis\UnconditionalSuppressMessageAttribute.cs"
              Link="System\Diagnostics\CodeAnalysis\UnconditionalSuppressMessageAttribute.cs" />
+    <Compile Include="$(CoreLibSharedDir)System\Diagnostics\CodeAnalysis\DynamicDependencyAttribute.cs"
+             Link="System\Diagnostics\CodeAnalysis\DynamicDependencyAttribute.cs" />
+    <Compile Include="$(CoreLibSharedDir)System\Diagnostics\CodeAnalysis\DynamicallyAccessedMembersAttribute.cs"
+             Link="System\Diagnostics\CodeAnalysis\DynamicallyAccessedMembersAttribute.cs" />
+    <Compile Include="$(CoreLibSharedDir)System\Diagnostics\CodeAnalysis\DynamicallyAccessedMemberTypes.cs"
+             Link="System\Diagnostics\CodeAnalysis\DynamicallyAccessedMemberTypes.cs" />
+    <Compile Include="$(CoreLibSharedDir)System\Diagnostics\CodeAnalysis\RequiresDynamicCodeAttribute.cs"
+             Link="System\Diagnostics\CodeAnalysis\RequiresDynamicCodeAttribute.cs" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFrameworkIdentifier)' != '.NETCoreApp'">

src/libraries/System.Resources.Extensions/src/System/Resources/Extensions/BinaryFormat/BinaryFormattedObject.IParseState.cs

@@ -0,0 +1,22 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System.Collections.Generic;
+using System.IO;
+using System.Runtime.Serialization.BinaryFormat;
+
+namespace System.Resources.Extensions.BinaryFormat;
+
+internal sealed partial class BinaryFormattedObject
+{
+    /// <summary>
+    ///  Parsing state.
+    /// </summary>
+    internal interface IParseState
+    {
+        BinaryReader Reader { get; }
+        IReadOnlyDictionary<int, SerializationRecord> RecordMap { get; }
+        Options Options { get; }
+        ITypeResolver TypeResolver { get; }
+    }
+}

src/libraries/System.Resources.Extensions/src/System/Resources/Extensions/BinaryFormat/BinaryFormattedObject.ITypeResolver.cs

@@ -0,0 +1,23 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System.Diagnostics.CodeAnalysis;
+using System.Reflection.Metadata;
+
+namespace System.Resources.Extensions.BinaryFormat;
+
+internal sealed partial class BinaryFormattedObject
+{
+    /// <summary>
+    ///  Resolver for types.
+    /// </summary>
+    internal interface ITypeResolver
+    {
+        /// <summary>
+        ///  Resolves the given type name against the specified library.
+        /// </summary>
+        [RequiresUnreferencedCode("Calls System.Reflection.Assembly.GetType(String)")]
+        [return: DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.All)]
+        Type GetType(TypeName typeName);
+    }
+}

src/libraries/System.Resources.Extensions/src/System/Resources/Extensions/BinaryFormat/BinaryFormattedObject.Options.cs

@@ -0,0 +1,37 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System.Runtime.Serialization;
+using System.Runtime.Serialization.Formatters;
+
+namespace System.Resources.Extensions.BinaryFormat;
+
+#pragma warning disable SYSLIB0050 // Type or member is obsolete
+
+internal sealed partial class BinaryFormattedObject
+{
+    internal sealed class Options
+    {
+        /// <summary>
+        ///  How exactly assembly names need to match for deserialization.
+        /// </summary>
+        public FormatterAssemblyStyle AssemblyMatching { get; set; } = FormatterAssemblyStyle.Simple;
+
+        /// <summary>
+        ///  Type name binder.
+        /// </summary>
+        public SerializationBinder? Binder { get; set; }
+
+        /// <summary>
+        ///  Optional type <see cref="ISerializationSurrogate"/> provider.
+        /// </summary>
+        public ISurrogateSelector? SurrogateSelector { get; set; }
+
+        /// <summary>
+        ///  Streaming context.
+        /// </summary>
+        public StreamingContext StreamingContext { get; set; } = new(StreamingContextStates.All);
+    }
+}
+
+#pragma warning restore SYSLIB0050 // Type or member is obsolete

src/libraries/System.Resources.Extensions/src/System/Resources/Extensions/BinaryFormat/BinaryFormattedObject.ParseState.cs

@@ -0,0 +1,30 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System.Collections.Generic;
+using System.IO;
+using System.Runtime.Serialization.BinaryFormat;
+
+namespace System.Resources.Extensions.BinaryFormat;
+
+internal sealed partial class BinaryFormattedObject
+{
+    /// <summary>
+    ///  Parsing state for <see cref="BinaryFormattedObject"/>.
+    /// </summary>
+    internal sealed class ParseState : IParseState
+    {
+        private readonly BinaryFormattedObject _format;
+
+        public ParseState(BinaryReader reader, BinaryFormattedObject format)
+        {
+            Reader = reader;
+            _format = format;
+        }
+
+        public BinaryReader Reader { get; }
+        public IReadOnlyDictionary<int, SerializationRecord> RecordMap => _format.RecordMap;
+        public Options Options => _format._options;
+        public ITypeResolver TypeResolver => _format.TypeResolver;
+    }
+}