/// <summary>
/// Reads a raw method body from the given binary input stream.
/// </summary>
/// <param name="errorListener">The object responsible for recording parser errors.</param>
/// <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(IErrorListener errorListener, IBinaryStreamReader reader)
{
var flag = (CilMethodBodyAttributes)reader.ReadByte();
reader.Offset--;
if ((flag & CilMethodBodyAttributes.Fat) == CilMethodBodyAttributes.Fat)
{
return(CilRawFatMethodBody.FromReader(errorListener, reader));
}
if ((flag & CilMethodBodyAttributes.Tiny) == CilMethodBodyAttributes.Tiny)
{
return(CilRawTinyMethodBody.FromReader(errorListener, reader));
}
throw new NotSupportedException("Invalid or unsupported method body format.");
}
/// <summary>
/// Reads a raw method body from the given binary input stream using the tiny method body format.
/// </summary>
/// <param name="reader">The binary input stream to read from.</param>
/// <returns>The raw method body.</returns>
/// <exception cref="FormatException">Occurs when the method header indicates an method body that is not in the
/// tiny format.</exception>
public new static CilRawTinyMethodBody FromReader(IBinaryStreamReader reader)
{
ulong fileOffset = reader.Offset;
uint rva = reader.Rva;
var flag = (CilMethodBodyAttributes)reader.ReadByte();
if ((flag & CilMethodBodyAttributes.Tiny) != CilMethodBodyAttributes.Tiny)
{
throw new FormatException("Invalid tiny CIL method body header.");
}
int codeSize = (byte)flag >> 2;
var code = new byte[codeSize];
reader.ReadBytes(code, 0, codeSize);
var methodBody = new CilRawTinyMethodBody(code);
methodBody.UpdateOffsets(fileOffset, rva);
return(methodBody);
}
/// <summary>
/// Reads a raw method body from the given binary input stream using the tiny method body format.
/// </summary>
/// <param name="errorListener">The object responsible for recording parser errors.</param>
/// <param name="reader">The binary input stream to read from.</param>
/// <returns>The raw method body.</returns>
/// <exception cref="FormatException">Occurs when the method header indicates an method body that is not in the
/// tiny format.</exception>
public new static CilRawTinyMethodBody FromReader(IErrorListener errorListener, ref BinaryStreamReader reader)
{
ulong fileOffset = reader.Offset;
uint rva = reader.Rva;
var flag = (CilMethodBodyAttributes)reader.ReadByte();
if ((flag & CilMethodBodyAttributes.Tiny) != CilMethodBodyAttributes.Tiny)
{
errorListener.BadImage("Invalid tiny CIL method body header.");
return(null);
}
int codeSize = (byte)flag >> 2;
var code = new byte[codeSize];
reader.ReadBytes(code, 0, codeSize);
var methodBody = new CilRawTinyMethodBody(code);
methodBody.UpdateOffsets(fileOffset, rva);
return(methodBody);
}
