public new static CilRawFatMethodBody FromReader(IBinaryStreamReader reader)
{
var body = new CilRawFatMethodBody
{
_header = reader.ReadUInt16(),
MaxStack = reader.ReadUInt16()
};
int codeSize = reader.ReadInt32();
body.LocalVarSigToken = reader.ReadUInt32();
body.Code = reader.ReadBytes(codeSize);
if (body.HasSections)
{
reader.Align(4);
CilExtraSection section;
do
{
section = CilExtraSection.FromReader(reader);
body.ExtraSections.Add(section);
} while (section.HasMoreSections);
}
return(body);
}
public override FileSegment CreateRawMethodBody(MetadataBuffer buffer)
{
using (var codeStream = new MemoryStream())
{
WriteCode(buffer, new BinaryStreamWriter(codeStream));
if (!IsFat)
{
return(new CilRawSmallMethodBody()
{
Code = codeStream.ToArray()
});
}
var fatBody = new CilRawFatMethodBody
{
HasSections = ExceptionHandlers.Count > 0,
InitLocals = InitLocals,
LocalVarSigToken = buffer.TableStreamBuffer.GetStandaloneSignatureToken(Signature).ToUInt32(),
MaxStack = (ushort)MaxStack,
Code = codeStream.ToArray()
};
if (ExceptionHandlers.Count > 0)
{
using (var sectionStream = new MemoryStream())
{
var sectionWriter = new BinaryStreamWriter(sectionStream);
bool useFatFormat = ExceptionHandlers.Any(x => x.IsFatFormatRequired);
foreach (var handler in ExceptionHandlers)
{
handler.IsFat = useFatFormat;
handler.Write(buffer, sectionWriter);
}
fatBody.ExtraSections.Add(new CilExtraSection
{
IsExceptionHandler = true,
IsFat = useFatFormat,
HasMoreSections = false,
Data = sectionStream.ToArray()
});
}
}
return(fatBody);
}
}
/// <summary>
/// Reads a raw method body from the given binary input stream.
/// </summary>
/// <param name="reader">The binary input stream to read from.</param>
/// <returns>The raw method body.</returns>
/// <exception cref="NotSupportedException">Occurs when the method header indicates an invalid or unsupported
/// method body format.</exception>
public static CilRawMethodBody FromReader(IBinaryStreamReader reader)
{
byte bodyHeader = reader.ReadByte();
reader.Position--;
if ((bodyHeader & 0x3) == 0x3)
{
return(CilRawFatMethodBody.FromReader(reader));
}
if ((bodyHeader & 0x2) == 0x2)
{
return(CilRawSmallMethodBody.FromReader(reader));
}
throw new NotSupportedException("Invalid or unsupported method body header.");
}
