[System.Security.SecurityCritical] // auto-generated
internal static StructLayoutAttribute GetCustomAttribute(RuntimeType type)
{
if (!IsDefined(type))
return null;
int pack = 0, size = 0;
LayoutKind layoutKind = LayoutKind.Auto;
switch (type.Attributes & TypeAttributes.LayoutMask)
{
case TypeAttributes.ExplicitLayout: layoutKind = LayoutKind.Explicit; break;
case TypeAttributes.AutoLayout: layoutKind = LayoutKind.Auto; break;
case TypeAttributes.SequentialLayout: layoutKind = LayoutKind.Sequential; break;
default: Contract.Assume(false); break;
}
CharSet charSet = CharSet.None;
switch (type.Attributes & TypeAttributes.StringFormatMask)
{
case TypeAttributes.AnsiClass: charSet = CharSet.Ansi; break;
case TypeAttributes.AutoClass: charSet = CharSet.Auto; break;
case TypeAttributes.UnicodeClass: charSet = CharSet.Unicode; break;
default: Contract.Assume(false); break;
}
#if MONO
type.GetPacking (out pack, out size);
#else
type.GetRuntimeModule().MetadataImport.GetClassLayout(type.MetadataToken, out pack, out size);
#endif
// Metadata parameter checking should not have allowed 0 for packing size.
// The runtime later converts a packing size of 0 to 8 so do the same here
// because it's more useful from a user perspective.
if (pack == 0)
pack = DEFAULT_PACKING_SIZE;
return new StructLayoutAttribute(layoutKind, pack, size, charSet);
}
