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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System;
using System.IO;
using System.Linq;
using System.Reflection.Metadata;
using System.Reflection.PortableExecutable;
namespace Microsoft.CodeAnalysis.Rebuild
{
public static class Extensions
{
internal static void SkipNullTerminator(ref this BlobReader blobReader)
{
var b = blobReader.ReadByte();
if (b != '\0')
{
throw new InvalidDataException(string.Format(RebuildResources.Encountered_unexpected_byte_0_when_expecting_a_null_terminator, b));
}
}
public static MetadataReader? GetEmbeddedPdbMetadataReader(this PEReader peReader)
{
var entry = peReader.ReadDebugDirectory().SingleOrDefault(x => x.Type == DebugDirectoryEntryType.EmbeddedPortablePdb);
if (entry.Type == DebugDirectoryEntryType.Unknown)
{
return null;
}
var provider = peReader.ReadEmbeddedPortablePdbDebugDirectoryData(entry);
return provider.GetMetadataReader();
}
}
}
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