private static String uncompressString(byte[] buffer, ref int offset)
{
uint length = SignatureBuffer.uncompressInt(buffer, ref offset);
int oldOffset = offset;
offset += (int)length;
return(MetaDataLoader.stringEncoding.GetString(buffer, oldOffset,
(int)length));
}
// Constructor Methods
internal static MarshalSpec Create(byte[] buffer)
{
int offset = 0;
NativeTypes kind = (NativeTypes)
SignatureBuffer.uncompressInt(buffer, ref offset);
switch (kind)
{
case NativeTypes.BOOLEAN:
case NativeTypes.I1:
case NativeTypes.U1:
case NativeTypes.I2:
case NativeTypes.U2:
case NativeTypes.I4:
case NativeTypes.U4:
case NativeTypes.I8:
case NativeTypes.U8:
case NativeTypes.R4:
case NativeTypes.R8:
case NativeTypes.CURRENCY:
case NativeTypes.BSTR:
case NativeTypes.LPSTR:
case NativeTypes.LPWSTR:
case NativeTypes.LPTSTR:
case NativeTypes.IUNKNOWN:
case NativeTypes.IDISPATCH:
case NativeTypes.STRUCT:
case NativeTypes.INTF:
case NativeTypes.INT:
case NativeTypes.UINT:
case NativeTypes.BYVALSTR:
case NativeTypes.ANSIBSTR:
case NativeTypes.TBSTR:
case NativeTypes.VARIANTBOOL:
case NativeTypes.FUNC:
case NativeTypes.ASANY:
case NativeTypes.LPSTRUCT:
case NativeTypes.ERROR:
case NativeTypes.MAX: {
if (offset != buffer.Length)
{
Console.WriteLine("WARNING: extra bytes in " + new MetaDataBlob(buffer));
}
return(new MarshalSpecNative(kind));
}
case NativeTypes.SAFEARRAY: {
VariantTypes elemType;
if (offset < buffer.Length)
{
elemType = (VariantTypes)
SignatureBuffer.uncompressInt(buffer, ref offset);
}
else
{
elemType = VariantTypes.VT_EMPTY;
}
if (offset != buffer.Length)
{
Console.WriteLine("WARNING: extra bytes in " + new MetaDataBlob(buffer));
}
return(new MarshalSpecSafeArray(elemType));
}
case NativeTypes.FIXEDSYSSTRING: {
uint elemCount =
SignatureBuffer.uncompressInt(buffer, ref offset);
if (offset != buffer.Length)
{
Console.WriteLine("WARNING: extra bytes in " + new MetaDataBlob(buffer));
}
return(new MarshalSpecFixedString(elemCount));
}
case NativeTypes.FIXEDARRAY: {
uint elemCount =
SignatureBuffer.uncompressInt(buffer, ref offset);
if (offset != buffer.Length)
{
Console.WriteLine("WARNING: extra bytes in " + new MetaDataBlob(buffer));
}
return(new MarshalSpecFixedArray(elemCount));
}
case NativeTypes.CUSTOMMARSHALER: {
String guid = uncompressString(buffer, ref offset);
String unmanagedType = uncompressString(buffer, ref offset);
String managedType = uncompressString(buffer, ref offset);
String cookie = uncompressString(buffer, ref offset);
if (offset != buffer.Length)
{
Console.WriteLine("WARNING: extra bytes in " + new MetaDataBlob(buffer));
}
return(new MarshalSpecCustom(guid, unmanagedType,
managedType, cookie));
}
case NativeTypes.ARRAY: {
NativeTypes elemType = (NativeTypes)
SignatureBuffer.uncompressInt(buffer, ref offset);
uint paramNumber =
((offset < buffer.Length) ?
SignatureBuffer.uncompressInt(buffer, ref offset) :
0);
uint extras =
((offset < buffer.Length) ?
SignatureBuffer.uncompressInt(buffer, ref offset) :
0);
if (offset != buffer.Length)
{
Console.WriteLine("WARNING: extra bytes in " + new MetaDataBlob(buffer));
}
return(new MarshalSpecArray(elemType, paramNumber, extras));
}
default: {
throw new Exception("Unknown marshal spec kind " + kind);
}
}
}
