37 lines
1.0 KiB
C#
37 lines
1.0 KiB
C#
|
// dnlib: See LICENSE.txt for more info
|
||
|
|
|
||
|
|
using System;
|
||
|
|
using dnlib.IO;
|
||
|
|
|
||
|
|
namespace dnlib.DotNet.MD {
|
||
|
|
/// <summary>
|
||
|
|
/// Represents the #GUID stream
|
||
|
|
/// </summary>
|
||
|
|
public sealed class GuidStream : HeapStream {
|
||
|
|
/// <inheritdoc/>
|
||
|
|
public GuidStream() {
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <inheritdoc/>
|
||
|
|
public GuidStream(DataReaderFactory mdReaderFactory, uint metadataBaseOffset, StreamHeader streamHeader)
|
||
|
|
: base(mdReaderFactory, metadataBaseOffset, streamHeader) {
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <inheritdoc/>
|
||
|
|
public override bool IsValidIndex(uint index) => index == 0 || (index <= 0x10000000 && IsValidOffset((index - 1) * 16, 16));
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// Read a <see cref="Guid"/>
|
||
|
|
/// </summary>
|
||
|
|
/// <param name="index">Index into this stream</param>
|
||
|
|
/// <returns>A <see cref="Guid"/> or <c>null</c> if <paramref name="index"/> is 0 or invalid</returns>
|
||
|
|
public Guid? Read(uint index) {
|
||
|
|
if (index == 0 || !IsValidIndex(index))
|
||
|
|
return null;
|
||
|
|
var reader = dataReader;
|
||
|
|
reader.Position = (index - 1) * 16;
|
||
|
|
return reader.ReadGuid();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|