static Info?GetInfo(DmdType td)
{
if ((object)td == null)
{
return(null);
}
if (td.IsWindowsRuntime)
{
return(null);
}
string scope = null, identifier = null;
var tia = td.FindCustomAttribute("System.Runtime.InteropServices.TypeIdentifierAttribute", inherit: false);
if (tia != null)
{
if (tia.ConstructorArguments.Count >= 2)
{
if (tia.ConstructorArguments[0].ArgumentType != td.AppDomain.System_String)
{
return(null);
}
if (tia.ConstructorArguments[1].ArgumentType != td.AppDomain.System_String)
{
return(null);
}
scope = tia.ConstructorArguments[0].Value as string;
identifier = tia.ConstructorArguments[1].Value as string;
}
}
else
{
bool isTypeLib = td.Module.Assembly.IsDefined("System.Runtime.InteropServices.ImportedFromTypeLibAttribute", inherit: false) ||
td.Module.Assembly.IsDefined("System.Runtime.InteropServices.PrimaryInteropAssemblyAttribute", inherit: false);
if (!isTypeLib)
{
return(null);
}
}
if (identifier == null)
{
DmdCustomAttributeData gca;
if (td.IsInterface && td.IsImport)
{
gca = td.FindCustomAttribute("System.Runtime.InteropServices.GuidAttribute", inherit: false);
}
else
{
gca = td.Module.Assembly.FindCustomAttribute("System.Runtime.InteropServices.GuidAttribute", inherit: false);
}
if (gca == null)
{
return(null);
}
if (gca.ConstructorArguments.Count < 1)
{
return(null);
}
if (gca.ConstructorArguments[0].ArgumentType != td.AppDomain.System_String)
{
return(null);
}
scope = gca.ConstructorArguments[0].Value as string;
var ns = td.MetadataNamespace;
var name = td.MetadataName;
if (string.IsNullOrEmpty(ns))
{
identifier = name;
}
else
{
identifier = ns + "." + name;
}
}
return(new Info(scope, identifier));
}
