void Write(CustomAttrib ca, MethodReference ctor, MemoryBinaryWriter writer)
{
if (ca == null)
{
return;
}
if (ca.Prolog != CustomAttrib.StdProlog)
{
return;
}
writer.Write(ca.Prolog);
for (int i = 0; i < ctor.Parameters.Count; i++)
{
Write(ca.FixedArgs [i], writer);
}
writer.Write(ca.NumNamed);
for (int i = 0; i < ca.NumNamed; i++)
{
Write(ca.NamedArgs [i], writer);
}
}
public byte [] CompressCustomAttribute(CustomAttrib ca, MethodReference ctor)
{
MemoryBinaryWriter writer = new MemoryBinaryWriter();
CompressCustomAttribute(ca, ctor, writer);
return(writer.ToArray());
}
CustomAttrib ReadCustomAttrib(int pos, MethodReference ctor, bool resolve)
{
int start, length = Utilities.ReadCompressedInteger(m_blobData, pos, out start);
byte [] data = new byte [length];
Buffer.BlockCopy(m_blobData, start, data, 0, length);
try {
return(ReadCustomAttrib(new BinaryReader(
new MemoryStream(data)), data, ctor, resolve));
} catch {
CustomAttrib ca = new CustomAttrib(ctor);
ca.Read = false;
return(ca);
}
}
CustomAttrib ReadCustomAttrib(BinaryReader br, byte [] data, MethodReference ctor, bool resolve)
{
CustomAttrib ca = new CustomAttrib(ctor);
if (data.Length == 0)
{
ca.FixedArgs = CustomAttrib.FixedArg.Empty;
ca.NamedArgs = CustomAttrib.NamedArg.Empty;
return(ca);
}
bool read = true;
ca.Prolog = br.ReadUInt16();
if (ca.Prolog != CustomAttrib.StdProlog)
{
throw new MetadataFormatException("Non standard prolog for custom attribute");
}
if (ctor.HasParameters)
{
ca.FixedArgs = new CustomAttrib.FixedArg [ctor.Parameters.Count];
for (int i = 0; i < ca.FixedArgs.Length && read; i++)
{
ca.FixedArgs [i] = ReadFixedArg(data, br,
ctor.Parameters [i].ParameterType, ref read, resolve);
}
}
else
{
ca.FixedArgs = CustomAttrib.FixedArg.Empty;
}
if (br.BaseStream.Position == br.BaseStream.Length)
{
read = false;
}
if (!read)
{
ca.Read = read;
return(ca);
}
ca.NumNamed = br.ReadUInt16();
if (ca.NumNamed > 0)
{
ca.NamedArgs = new CustomAttrib.NamedArg [ca.NumNamed];
for (int i = 0; i < ca.NumNamed && read; i++)
{
ca.NamedArgs [i] = ReadNamedArg(data, br, ref read, resolve);
}
}
else
{
ca.NamedArgs = CustomAttrib.NamedArg.Empty;
}
ca.Read = read;
return(ca);
}
void CompressCustomAttribute(CustomAttrib ca, MethodReference ctor, MemoryBinaryWriter writer)
{
m_sigWriter.Empty();
Write(ca, ctor, writer);
}
public uint AddCustomAttribute(CustomAttrib ca, MethodReference ctor)
{
CompressCustomAttribute(ca, ctor, m_sigWriter);
return(GetPointer());
}
