MetadataRootBuilder.cs

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using System.Collections.Immutable;
 
namespace System.Reflection.Metadata.Ecma335;
 
public sealed class MetadataRootBuilder
{
    internal static readonly ImmutableArray<int> EmptyRowCounts = ImmutableArray.Create(new int[MetadataTokens.TableCount]);
 
    private readonly MetadataBuilder _tablesAndHeaps;
 
    private readonly SerializedMetadata _serializedMetadata;
 
    public string MetadataVersion { get; }
 
    public bool SuppressValidation { get; }
 
    public MetadataSizes Sizes => _serializedMetadata.Sizes;
 
    public MetadataRootBuilder(MetadataBuilder tablesAndHeaps, string? metadataVersion = null, bool suppressValidation = false)
    {
        if (tablesAndHeaps == null)
        {
            Throw.ArgumentNull("tablesAndHeaps");
        }
        int num = ((metadataVersion != null) ? BlobUtilities.GetUTF8ByteCount(metadataVersion) : "v4.0.30319".Length);
        if (num > 254)
        {
            Throw.InvalidArgument(System.SR.MetadataVersionTooLong, "metadataVersion");
        }
        _tablesAndHeaps = tablesAndHeaps;
        MetadataVersion = metadataVersion ?? "v4.0.30319";
        SuppressValidation = suppressValidation;
        _serializedMetadata = tablesAndHeaps.GetSerializedMetadata(EmptyRowCounts, num, isStandaloneDebugMetadata: false);
    }
 
    public void Serialize(BlobBuilder builder, int methodBodyStreamRva, int mappedFieldDataStreamRva)
    {
        if (builder == null)
        {
            Throw.ArgumentNull("builder");
        }
        if (methodBodyStreamRva < 0)
        {
            Throw.ArgumentOutOfRange("methodBodyStreamRva");
        }
        if (mappedFieldDataStreamRva < 0)
        {
            Throw.ArgumentOutOfRange("mappedFieldDataStreamRva");
        }
        if (!SuppressValidation)
        {
            _tablesAndHeaps.ValidateOrder();
        }
        MetadataBuilder.SerializeMetadataHeader(builder, MetadataVersion, _serializedMetadata.Sizes);
        _tablesAndHeaps.SerializeMetadataTables(builder, _serializedMetadata.Sizes, _serializedMetadata.StringMap, methodBodyStreamRva, mappedFieldDataStreamRva);
        _tablesAndHeaps.WriteHeapsTo(builder, _serializedMetadata.StringHeap);
    }
}